1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2013 - 2018 Intel Corporation. */
3
4/* ethtool support for i40e */
5
6#include "i40e_devids.h"
7#include "i40e_diag.h"
8#include "i40e_txrx_common.h"
9#include "i40e_virtchnl_pf.h"
10
11/* ethtool statistics helpers */
12
13/**
14 * struct i40e_stats - definition for an ethtool statistic
15 * @stat_string: statistic name to display in ethtool -S output
16 * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
17 * @stat_offset: offsetof() the stat from a base pointer
18 *
19 * This structure defines a statistic to be added to the ethtool stats buffer.
20 * It defines a statistic as offset from a common base pointer. Stats should
21 * be defined in constant arrays using the I40E_STAT macro, with every element
22 * of the array using the same _type for calculating the sizeof_stat and
23 * stat_offset.
24 *
25 * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
26 * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
27 * the i40e_add_ethtool_stat() helper function.
28 *
29 * The @stat_string is interpreted as a format string, allowing formatted
30 * values to be inserted while looping over multiple structures for a given
31 * statistics array. Thus, every statistic string in an array should have the
32 * same type and number of format specifiers, to be formatted by variadic
33 * arguments to the i40e_add_stat_string() helper function.
34 **/
35struct i40e_stats {
36 char stat_string[ETH_GSTRING_LEN];
37 int sizeof_stat;
38 int stat_offset;
39};
40
41/* Helper macro to define an i40e_stat structure with proper size and type.
42 * Use this when defining constant statistics arrays. Note that @_type expects
43 * only a type name and is used multiple times.
44 */
45#define I40E_STAT(_type, _name, _stat) { \
46 .stat_string = _name, \
47 .sizeof_stat = sizeof_field(_type, _stat), \
48 .stat_offset = offsetof(_type, _stat) \
49}
50
51/* Helper macro for defining some statistics directly copied from the netdev
52 * stats structure.
53 */
54#define I40E_NETDEV_STAT(_net_stat) \
55 I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
56
57/* Helper macro for defining some statistics related to queues */
58#define I40E_QUEUE_STAT(_name, _stat) \
59 I40E_STAT(struct i40e_ring, _name, _stat)
60
61/* Stats associated with a Tx or Rx ring */
62static const struct i40e_stats i40e_gstrings_queue_stats[] = {
63 I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
64 I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
65};
66
67/**
68 * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer
69 * @data: location to store the stat value
70 * @pointer: basis for where to copy from
71 * @stat: the stat definition
72 *
73 * Copies the stat data defined by the pointer and stat structure pair into
74 * the memory supplied as data. Used to implement i40e_add_ethtool_stats and
75 * i40e_add_queue_stats. If the pointer is null, data will be zero'd.
76 */
77static void
78i40e_add_one_ethtool_stat(u64 *data, void *pointer,
79 const struct i40e_stats *stat)
80{
81 char *p;
82
83 if (!pointer) {
84 /* ensure that the ethtool data buffer is zero'd for any stats
85 * which don't have a valid pointer.
86 */
87 *data = 0;
88 return;
89 }
90
91 p = (char *)pointer + stat->stat_offset;
92 switch (stat->sizeof_stat) {
93 case sizeof(u64):
94 *data = *((u64 *)p);
95 break;
96 case sizeof(u32):
97 *data = *((u32 *)p);
98 break;
99 case sizeof(u16):
100 *data = *((u16 *)p);
101 break;
102 case sizeof(u8):
103 *data = *((u8 *)p);
104 break;
105 default:
106 WARN_ONCE(1, "unexpected stat size for %s",
107 stat->stat_string);
108 *data = 0;
109 }
110}
111
112/**
113 * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer
114 * @data: ethtool stats buffer
115 * @pointer: location to copy stats from
116 * @stats: array of stats to copy
117 * @size: the size of the stats definition
118 *
119 * Copy the stats defined by the stats array using the pointer as a base into
120 * the data buffer supplied by ethtool. Updates the data pointer to point to
121 * the next empty location for successive calls to __i40e_add_ethtool_stats.
122 * If pointer is null, set the data values to zero and update the pointer to
123 * skip these stats.
124 **/
125static void
126__i40e_add_ethtool_stats(u64 **data, void *pointer,
127 const struct i40e_stats stats[],
128 const unsigned int size)
129{
130 unsigned int i;
131
132 for (i = 0; i < size; i++)
133 i40e_add_one_ethtool_stat(data: (*data)++, pointer, stat: &stats[i]);
134}
135
136/**
137 * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer
138 * @data: ethtool stats buffer
139 * @pointer: location where stats are stored
140 * @stats: static const array of stat definitions
141 *
142 * Macro to ease the use of __i40e_add_ethtool_stats by taking a static
143 * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
144 * ensuring that we pass the size associated with the given stats array.
145 *
146 * The parameter @stats is evaluated twice, so parameters with side effects
147 * should be avoided.
148 **/
149#define i40e_add_ethtool_stats(data, pointer, stats) \
150 __i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
151
152/**
153 * i40e_add_queue_stats - copy queue statistics into supplied buffer
154 * @data: ethtool stats buffer
155 * @ring: the ring to copy
156 *
157 * Queue statistics must be copied while protected by
158 * u64_stats_fetch_begin, so we can't directly use i40e_add_ethtool_stats.
159 * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the
160 * ring pointer is null, zero out the queue stat values and update the data
161 * pointer. Otherwise safely copy the stats from the ring into the supplied
162 * buffer and update the data pointer when finished.
163 *
164 * This function expects to be called while under rcu_read_lock().
165 **/
166static void
167i40e_add_queue_stats(u64 **data, struct i40e_ring *ring)
168{
169 const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats);
170 const struct i40e_stats *stats = i40e_gstrings_queue_stats;
171 unsigned int start;
172 unsigned int i;
173
174 /* To avoid invalid statistics values, ensure that we keep retrying
175 * the copy until we get a consistent value according to
176 * u64_stats_fetch_retry. But first, make sure our ring is
177 * non-null before attempting to access its syncp.
178 */
179 do {
180 start = !ring ? 0 : u64_stats_fetch_begin(syncp: &ring->syncp);
181 for (i = 0; i < size; i++) {
182 i40e_add_one_ethtool_stat(data: &(*data)[i], pointer: ring,
183 stat: &stats[i]);
184 }
185 } while (ring && u64_stats_fetch_retry(syncp: &ring->syncp, start));
186
187 /* Once we successfully copy the stats in, update the data pointer */
188 *data += size;
189}
190
191/**
192 * __i40e_add_stat_strings - copy stat strings into ethtool buffer
193 * @p: ethtool supplied buffer
194 * @stats: stat definitions array
195 * @size: size of the stats array
196 *
197 * Format and copy the strings described by stats into the buffer pointed at
198 * by p.
199 **/
200static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
201 const unsigned int size, ...)
202{
203 unsigned int i;
204
205 for (i = 0; i < size; i++) {
206 va_list args;
207
208 va_start(args, size);
209 vsnprintf(buf: *p, ETH_GSTRING_LEN, fmt: stats[i].stat_string, args);
210 *p += ETH_GSTRING_LEN;
211 va_end(args);
212 }
213}
214
215/**
216 * i40e_add_stat_strings - copy stat strings into ethtool buffer
217 * @p: ethtool supplied buffer
218 * @stats: stat definitions array
219 *
220 * Format and copy the strings described by the const static stats value into
221 * the buffer pointed at by p.
222 *
223 * The parameter @stats is evaluated twice, so parameters with side effects
224 * should be avoided. Additionally, stats must be an array such that
225 * ARRAY_SIZE can be called on it.
226 **/
227#define i40e_add_stat_strings(p, stats, ...) \
228 __i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
229
230#define I40E_PF_STAT(_name, _stat) \
231 I40E_STAT(struct i40e_pf, _name, _stat)
232#define I40E_VSI_STAT(_name, _stat) \
233 I40E_STAT(struct i40e_vsi, _name, _stat)
234#define I40E_VEB_STAT(_name, _stat) \
235 I40E_STAT(struct i40e_veb, _name, _stat)
236#define I40E_VEB_TC_STAT(_name, _stat) \
237 I40E_STAT(struct i40e_cp_veb_tc_stats, _name, _stat)
238#define I40E_PFC_STAT(_name, _stat) \
239 I40E_STAT(struct i40e_pfc_stats, _name, _stat)
240
241static const struct i40e_stats i40e_gstrings_net_stats[] = {
242 I40E_NETDEV_STAT(rx_packets),
243 I40E_NETDEV_STAT(tx_packets),
244 I40E_NETDEV_STAT(rx_bytes),
245 I40E_NETDEV_STAT(tx_bytes),
246 I40E_NETDEV_STAT(rx_errors),
247 I40E_NETDEV_STAT(tx_errors),
248 I40E_NETDEV_STAT(rx_dropped),
249 I40E_NETDEV_STAT(rx_missed_errors),
250 I40E_NETDEV_STAT(tx_dropped),
251 I40E_NETDEV_STAT(collisions),
252 I40E_NETDEV_STAT(rx_length_errors),
253 I40E_NETDEV_STAT(rx_crc_errors),
254};
255
256static const struct i40e_stats i40e_gstrings_veb_stats[] = {
257 I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes),
258 I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes),
259 I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast),
260 I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast),
261 I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast),
262 I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast),
263 I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast),
264 I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast),
265 I40E_VEB_STAT("veb.rx_discards", stats.rx_discards),
266 I40E_VEB_STAT("veb.tx_discards", stats.tx_discards),
267 I40E_VEB_STAT("veb.tx_errors", stats.tx_errors),
268 I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
269};
270
271struct i40e_cp_veb_tc_stats {
272 u64 tc_rx_packets;
273 u64 tc_rx_bytes;
274 u64 tc_tx_packets;
275 u64 tc_tx_bytes;
276};
277
278static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
279 I40E_VEB_TC_STAT("veb.tc_%u_tx_packets", tc_tx_packets),
280 I40E_VEB_TC_STAT("veb.tc_%u_tx_bytes", tc_tx_bytes),
281 I40E_VEB_TC_STAT("veb.tc_%u_rx_packets", tc_rx_packets),
282 I40E_VEB_TC_STAT("veb.tc_%u_rx_bytes", tc_rx_bytes),
283};
284
285static const struct i40e_stats i40e_gstrings_misc_stats[] = {
286 I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
287 I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
288 I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
289 I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
290 I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
291 I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
292 I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
293 I40E_VSI_STAT("tx_linearize", tx_linearize),
294 I40E_VSI_STAT("tx_force_wb", tx_force_wb),
295 I40E_VSI_STAT("tx_busy", tx_busy),
296 I40E_VSI_STAT("tx_stopped", tx_stopped),
297 I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
298 I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
299 I40E_VSI_STAT("rx_cache_reuse", rx_page_reuse),
300 I40E_VSI_STAT("rx_cache_alloc", rx_page_alloc),
301 I40E_VSI_STAT("rx_cache_waive", rx_page_waive),
302 I40E_VSI_STAT("rx_cache_busy", rx_page_busy),
303 I40E_VSI_STAT("tx_restart", tx_restart),
304};
305
306/* These PF_STATs might look like duplicates of some NETDEV_STATs,
307 * but they are separate. This device supports Virtualization, and
308 * as such might have several netdevs supporting VMDq and FCoE going
309 * through a single port. The NETDEV_STATs are for individual netdevs
310 * seen at the top of the stack, and the PF_STATs are for the physical
311 * function at the bottom of the stack hosting those netdevs.
312 *
313 * The PF_STATs are appended to the netdev stats only when ethtool -S
314 * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
315 */
316static const struct i40e_stats i40e_gstrings_stats[] = {
317 I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
318 I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
319 I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
320 I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
321 I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
322 I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
323 I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
324 I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
325 I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
326 I40E_PF_STAT("port.rx_discards", stats.eth.rx_discards),
327 I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
328 I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
329 I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
330 I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
331 I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
332 I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
333 I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
334 I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
335 I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
336 I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
337 I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
338 I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
339 I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
340 I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
341 I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
342 I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
343 I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
344 I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
345 I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
346 I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
347 I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
348 I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
349 I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
350 I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
351 I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
352 I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
353 I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
354 I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
355 I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
356 I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
357 I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
358 I40E_PF_STAT("port.arq_overflows", arq_overflows),
359 I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
360 I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
361 I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
362 I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
363 I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
364 I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
365 I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
366 I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
367 I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
368
369 /* LPI stats */
370 I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status),
371 I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status),
372 I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count),
373 I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count),
374};
375
376struct i40e_pfc_stats {
377 u64 priority_xon_rx;
378 u64 priority_xoff_rx;
379 u64 priority_xon_tx;
380 u64 priority_xoff_tx;
381 u64 priority_xon_2_xoff;
382};
383
384static const struct i40e_stats i40e_gstrings_pfc_stats[] = {
385 I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx),
386 I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx),
387 I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx),
388 I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx),
389 I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff),
390};
391
392#define I40E_NETDEV_STATS_LEN ARRAY_SIZE(i40e_gstrings_net_stats)
393
394#define I40E_MISC_STATS_LEN ARRAY_SIZE(i40e_gstrings_misc_stats)
395
396#define I40E_VSI_STATS_LEN (I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN)
397
398#define I40E_PFC_STATS_LEN (ARRAY_SIZE(i40e_gstrings_pfc_stats) * \
399 I40E_MAX_USER_PRIORITY)
400
401#define I40E_VEB_STATS_LEN (ARRAY_SIZE(i40e_gstrings_veb_stats) + \
402 (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \
403 I40E_MAX_TRAFFIC_CLASS))
404
405#define I40E_GLOBAL_STATS_LEN ARRAY_SIZE(i40e_gstrings_stats)
406
407#define I40E_PF_STATS_LEN (I40E_GLOBAL_STATS_LEN + \
408 I40E_PFC_STATS_LEN + \
409 I40E_VEB_STATS_LEN + \
410 I40E_VSI_STATS_LEN)
411
412/* Length of stats for a single queue */
413#define I40E_QUEUE_STATS_LEN ARRAY_SIZE(i40e_gstrings_queue_stats)
414
415enum i40e_ethtool_test_id {
416 I40E_ETH_TEST_REG = 0,
417 I40E_ETH_TEST_EEPROM,
418 I40E_ETH_TEST_INTR,
419 I40E_ETH_TEST_LINK,
420};
421
422static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
423 "Register test (offline)",
424 "Eeprom test (offline)",
425 "Interrupt test (offline)",
426 "Link test (on/offline)"
427};
428
429#define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
430
431struct i40e_priv_flags {
432 char flag_string[ETH_GSTRING_LEN];
433 u64 flag;
434 bool read_only;
435};
436
437#define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
438 .flag_string = _name, \
439 .flag = _flag, \
440 .read_only = _read_only, \
441}
442
443static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
444 /* NOTE: MFP setting cannot be changed */
445 I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
446 I40E_PRIV_FLAG("total-port-shutdown",
447 I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED, 1),
448 I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
449 I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
450 I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
451 I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
452 I40E_PRIV_FLAG("link-down-on-close",
453 I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
454 I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
455 I40E_PRIV_FLAG("disable-source-pruning",
456 I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
457 I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
458 I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0),
459 I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0),
460 I40E_PRIV_FLAG("vf-vlan-pruning",
461 I40E_FLAG_VF_VLAN_PRUNING, 0),
462};
463
464#define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
465
466/* Private flags with a global effect, restricted to PF 0 */
467static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
468 I40E_PRIV_FLAG("vf-true-promisc-support",
469 I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
470};
471
472#define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
473
474/**
475 * i40e_partition_setting_complaint - generic complaint for MFP restriction
476 * @pf: the PF struct
477 **/
478static void i40e_partition_setting_complaint(struct i40e_pf *pf)
479{
480 dev_info(&pf->pdev->dev,
481 "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n");
482}
483
484/**
485 * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
486 * @pf: PF struct with phy_types
487 * @ks: ethtool link ksettings struct to fill out
488 *
489 **/
490static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
491 struct ethtool_link_ksettings *ks)
492{
493 struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
494 u64 phy_types = pf->hw.phy.phy_types;
495
496 ethtool_link_ksettings_zero_link_mode(ks, supported);
497 ethtool_link_ksettings_zero_link_mode(ks, advertising);
498
499 if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
500 ethtool_link_ksettings_add_link_mode(ks, supported,
501 1000baseT_Full);
502 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
503 ethtool_link_ksettings_add_link_mode(ks, advertising,
504 1000baseT_Full);
505 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
506 ethtool_link_ksettings_add_link_mode(ks, supported,
507 100baseT_Full);
508 ethtool_link_ksettings_add_link_mode(ks, advertising,
509 100baseT_Full);
510 }
511 }
512 if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
513 phy_types & I40E_CAP_PHY_TYPE_XFI ||
514 phy_types & I40E_CAP_PHY_TYPE_SFI ||
515 phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
516 phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
517 ethtool_link_ksettings_add_link_mode(ks, supported,
518 10000baseT_Full);
519 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
520 ethtool_link_ksettings_add_link_mode(ks, advertising,
521 10000baseT_Full);
522 }
523 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
524 ethtool_link_ksettings_add_link_mode(ks, supported,
525 10000baseT_Full);
526 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
527 ethtool_link_ksettings_add_link_mode(ks, advertising,
528 10000baseT_Full);
529 }
530 if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) {
531 ethtool_link_ksettings_add_link_mode(ks, supported,
532 2500baseT_Full);
533 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
534 ethtool_link_ksettings_add_link_mode(ks, advertising,
535 2500baseT_Full);
536 }
537 if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) {
538 ethtool_link_ksettings_add_link_mode(ks, supported,
539 5000baseT_Full);
540 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
541 ethtool_link_ksettings_add_link_mode(ks, advertising,
542 5000baseT_Full);
543 }
544 if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
545 phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
546 phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
547 ethtool_link_ksettings_add_link_mode(ks, supported,
548 40000baseCR4_Full);
549 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
550 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
551 ethtool_link_ksettings_add_link_mode(ks, supported,
552 40000baseCR4_Full);
553 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
554 ethtool_link_ksettings_add_link_mode(ks, advertising,
555 40000baseCR4_Full);
556 }
557 if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
558 ethtool_link_ksettings_add_link_mode(ks, supported,
559 100baseT_Full);
560 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
561 ethtool_link_ksettings_add_link_mode(ks, advertising,
562 100baseT_Full);
563 }
564 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
565 ethtool_link_ksettings_add_link_mode(ks, supported,
566 1000baseT_Full);
567 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
568 ethtool_link_ksettings_add_link_mode(ks, advertising,
569 1000baseT_Full);
570 }
571 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) {
572 ethtool_link_ksettings_add_link_mode(ks, supported,
573 40000baseSR4_Full);
574 ethtool_link_ksettings_add_link_mode(ks, advertising,
575 40000baseSR4_Full);
576 }
577 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) {
578 ethtool_link_ksettings_add_link_mode(ks, supported,
579 40000baseLR4_Full);
580 ethtool_link_ksettings_add_link_mode(ks, advertising,
581 40000baseLR4_Full);
582 }
583 if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
584 ethtool_link_ksettings_add_link_mode(ks, supported,
585 40000baseKR4_Full);
586 ethtool_link_ksettings_add_link_mode(ks, advertising,
587 40000baseKR4_Full);
588 }
589 if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
590 ethtool_link_ksettings_add_link_mode(ks, supported,
591 20000baseKR2_Full);
592 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
593 ethtool_link_ksettings_add_link_mode(ks, advertising,
594 20000baseKR2_Full);
595 }
596 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
597 ethtool_link_ksettings_add_link_mode(ks, supported,
598 10000baseKX4_Full);
599 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
600 ethtool_link_ksettings_add_link_mode(ks, advertising,
601 10000baseKX4_Full);
602 }
603 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
604 !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
605 ethtool_link_ksettings_add_link_mode(ks, supported,
606 10000baseKR_Full);
607 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
608 ethtool_link_ksettings_add_link_mode(ks, advertising,
609 10000baseKR_Full);
610 }
611 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
612 !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
613 ethtool_link_ksettings_add_link_mode(ks, supported,
614 1000baseKX_Full);
615 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
616 ethtool_link_ksettings_add_link_mode(ks, advertising,
617 1000baseKX_Full);
618 }
619 /* need to add 25G PHY types */
620 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) {
621 ethtool_link_ksettings_add_link_mode(ks, supported,
622 25000baseKR_Full);
623 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
624 ethtool_link_ksettings_add_link_mode(ks, advertising,
625 25000baseKR_Full);
626 }
627 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) {
628 ethtool_link_ksettings_add_link_mode(ks, supported,
629 25000baseCR_Full);
630 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
631 ethtool_link_ksettings_add_link_mode(ks, advertising,
632 25000baseCR_Full);
633 }
634 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
635 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
636 ethtool_link_ksettings_add_link_mode(ks, supported,
637 25000baseSR_Full);
638 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
639 ethtool_link_ksettings_add_link_mode(ks, advertising,
640 25000baseSR_Full);
641 }
642 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
643 phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
644 ethtool_link_ksettings_add_link_mode(ks, supported,
645 25000baseCR_Full);
646 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
647 ethtool_link_ksettings_add_link_mode(ks, advertising,
648 25000baseCR_Full);
649 }
650 if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
651 phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
652 phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
653 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
654 phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
655 phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
656 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
657 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
658 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
659 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) {
660 ethtool_link_ksettings_add_link_mode(ks, advertising,
661 FEC_NONE);
662 ethtool_link_ksettings_add_link_mode(ks, advertising,
663 FEC_RS);
664 ethtool_link_ksettings_add_link_mode(ks, advertising,
665 FEC_BASER);
666 }
667 }
668 /* need to add new 10G PHY types */
669 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
670 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) {
671 ethtool_link_ksettings_add_link_mode(ks, supported,
672 10000baseCR_Full);
673 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
674 ethtool_link_ksettings_add_link_mode(ks, advertising,
675 10000baseCR_Full);
676 }
677 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) {
678 ethtool_link_ksettings_add_link_mode(ks, supported,
679 10000baseSR_Full);
680 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
681 ethtool_link_ksettings_add_link_mode(ks, advertising,
682 10000baseSR_Full);
683 }
684 if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
685 ethtool_link_ksettings_add_link_mode(ks, supported,
686 10000baseLR_Full);
687 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
688 ethtool_link_ksettings_add_link_mode(ks, advertising,
689 10000baseLR_Full);
690 }
691 if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
692 phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
693 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
694 ethtool_link_ksettings_add_link_mode(ks, supported,
695 1000baseX_Full);
696 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
697 ethtool_link_ksettings_add_link_mode(ks, advertising,
698 1000baseX_Full);
699 }
700 /* Autoneg PHY types */
701 if (phy_types & I40E_CAP_PHY_TYPE_SGMII ||
702 phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 ||
703 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
704 phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 ||
705 phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
706 phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
707 phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
708 phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
709 phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 ||
710 phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
711 phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR ||
712 phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 ||
713 phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR ||
714 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
715 phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
716 phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
717 phy_types & I40E_CAP_PHY_TYPE_5GBASE_T ||
718 phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T ||
719 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL ||
720 phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
721 phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
722 phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
723 phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX ||
724 phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
725 ethtool_link_ksettings_add_link_mode(ks, supported,
726 Autoneg);
727 ethtool_link_ksettings_add_link_mode(ks, advertising,
728 Autoneg);
729 }
730}
731
732/**
733 * i40e_get_settings_link_up_fec - Get the FEC mode encoding from mask
734 * @req_fec_info: mask request FEC info
735 * @ks: ethtool ksettings to fill in
736 **/
737static void i40e_get_settings_link_up_fec(u8 req_fec_info,
738 struct ethtool_link_ksettings *ks)
739{
740 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
741 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
742 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
743
744 if ((I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) &&
745 (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info)) {
746 ethtool_link_ksettings_add_link_mode(ks, advertising,
747 FEC_NONE);
748 ethtool_link_ksettings_add_link_mode(ks, advertising,
749 FEC_BASER);
750 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
751 } else if (I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) {
752 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
753 } else if (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info) {
754 ethtool_link_ksettings_add_link_mode(ks, advertising,
755 FEC_BASER);
756 } else {
757 ethtool_link_ksettings_add_link_mode(ks, advertising,
758 FEC_NONE);
759 }
760}
761
762/**
763 * i40e_get_settings_link_up - Get the Link settings for when link is up
764 * @hw: hw structure
765 * @ks: ethtool ksettings to fill in
766 * @netdev: network interface device structure
767 * @pf: pointer to physical function struct
768 **/
769static void i40e_get_settings_link_up(struct i40e_hw *hw,
770 struct ethtool_link_ksettings *ks,
771 struct net_device *netdev,
772 struct i40e_pf *pf)
773{
774 struct i40e_link_status *hw_link_info = &hw->phy.link_info;
775 struct ethtool_link_ksettings cap_ksettings;
776 u32 link_speed = hw_link_info->link_speed;
777
778 /* Initialize supported and advertised settings based on phy settings */
779 switch (hw_link_info->phy_type) {
780 case I40E_PHY_TYPE_40GBASE_CR4:
781 case I40E_PHY_TYPE_40GBASE_CR4_CU:
782 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
783 ethtool_link_ksettings_add_link_mode(ks, supported,
784 40000baseCR4_Full);
785 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
786 ethtool_link_ksettings_add_link_mode(ks, advertising,
787 40000baseCR4_Full);
788 break;
789 case I40E_PHY_TYPE_XLAUI:
790 case I40E_PHY_TYPE_XLPPI:
791 case I40E_PHY_TYPE_40GBASE_AOC:
792 ethtool_link_ksettings_add_link_mode(ks, supported,
793 40000baseCR4_Full);
794 ethtool_link_ksettings_add_link_mode(ks, advertising,
795 40000baseCR4_Full);
796 break;
797 case I40E_PHY_TYPE_40GBASE_SR4:
798 ethtool_link_ksettings_add_link_mode(ks, supported,
799 40000baseSR4_Full);
800 ethtool_link_ksettings_add_link_mode(ks, advertising,
801 40000baseSR4_Full);
802 break;
803 case I40E_PHY_TYPE_40GBASE_LR4:
804 ethtool_link_ksettings_add_link_mode(ks, supported,
805 40000baseLR4_Full);
806 ethtool_link_ksettings_add_link_mode(ks, advertising,
807 40000baseLR4_Full);
808 break;
809 case I40E_PHY_TYPE_25GBASE_SR:
810 case I40E_PHY_TYPE_25GBASE_LR:
811 case I40E_PHY_TYPE_10GBASE_SR:
812 case I40E_PHY_TYPE_10GBASE_LR:
813 case I40E_PHY_TYPE_1000BASE_SX:
814 case I40E_PHY_TYPE_1000BASE_LX:
815 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
816 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
817 ethtool_link_ksettings_add_link_mode(ks, supported,
818 25000baseSR_Full);
819 ethtool_link_ksettings_add_link_mode(ks, advertising,
820 25000baseSR_Full);
821 i40e_get_settings_link_up_fec(req_fec_info: hw_link_info->req_fec_info, ks);
822 ethtool_link_ksettings_add_link_mode(ks, supported,
823 10000baseSR_Full);
824 ethtool_link_ksettings_add_link_mode(ks, advertising,
825 10000baseSR_Full);
826 ethtool_link_ksettings_add_link_mode(ks, supported,
827 10000baseLR_Full);
828 ethtool_link_ksettings_add_link_mode(ks, advertising,
829 10000baseLR_Full);
830 ethtool_link_ksettings_add_link_mode(ks, supported,
831 1000baseX_Full);
832 ethtool_link_ksettings_add_link_mode(ks, advertising,
833 1000baseX_Full);
834 ethtool_link_ksettings_add_link_mode(ks, supported,
835 10000baseT_Full);
836 if (hw_link_info->module_type[2] &
837 I40E_MODULE_TYPE_1000BASE_SX ||
838 hw_link_info->module_type[2] &
839 I40E_MODULE_TYPE_1000BASE_LX) {
840 ethtool_link_ksettings_add_link_mode(ks, supported,
841 1000baseT_Full);
842 if (hw_link_info->requested_speeds &
843 I40E_LINK_SPEED_1GB)
844 ethtool_link_ksettings_add_link_mode(
845 ks, advertising, 1000baseT_Full);
846 }
847 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
848 ethtool_link_ksettings_add_link_mode(ks, advertising,
849 10000baseT_Full);
850 break;
851 case I40E_PHY_TYPE_10GBASE_T:
852 case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS:
853 case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS:
854 case I40E_PHY_TYPE_1000BASE_T:
855 case I40E_PHY_TYPE_100BASE_TX:
856 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
857 ethtool_link_ksettings_add_link_mode(ks, supported,
858 10000baseT_Full);
859 ethtool_link_ksettings_add_link_mode(ks, supported,
860 5000baseT_Full);
861 ethtool_link_ksettings_add_link_mode(ks, supported,
862 2500baseT_Full);
863 ethtool_link_ksettings_add_link_mode(ks, supported,
864 1000baseT_Full);
865 ethtool_link_ksettings_add_link_mode(ks, supported,
866 100baseT_Full);
867 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
868 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
869 ethtool_link_ksettings_add_link_mode(ks, advertising,
870 10000baseT_Full);
871 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
872 ethtool_link_ksettings_add_link_mode(ks, advertising,
873 5000baseT_Full);
874 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
875 ethtool_link_ksettings_add_link_mode(ks, advertising,
876 2500baseT_Full);
877 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
878 ethtool_link_ksettings_add_link_mode(ks, advertising,
879 1000baseT_Full);
880 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
881 ethtool_link_ksettings_add_link_mode(ks, advertising,
882 100baseT_Full);
883 break;
884 case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
885 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
886 ethtool_link_ksettings_add_link_mode(ks, supported,
887 1000baseT_Full);
888 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
889 ethtool_link_ksettings_add_link_mode(ks, advertising,
890 1000baseT_Full);
891 break;
892 case I40E_PHY_TYPE_10GBASE_CR1_CU:
893 case I40E_PHY_TYPE_10GBASE_CR1:
894 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
895 ethtool_link_ksettings_add_link_mode(ks, supported,
896 10000baseT_Full);
897 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
898 ethtool_link_ksettings_add_link_mode(ks, advertising,
899 10000baseT_Full);
900 break;
901 case I40E_PHY_TYPE_XAUI:
902 case I40E_PHY_TYPE_XFI:
903 case I40E_PHY_TYPE_SFI:
904 case I40E_PHY_TYPE_10GBASE_SFPP_CU:
905 case I40E_PHY_TYPE_10GBASE_AOC:
906 ethtool_link_ksettings_add_link_mode(ks, supported,
907 10000baseT_Full);
908 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
909 ethtool_link_ksettings_add_link_mode(ks, advertising,
910 10000baseT_Full);
911 i40e_get_settings_link_up_fec(req_fec_info: hw_link_info->req_fec_info, ks);
912 break;
913 case I40E_PHY_TYPE_SGMII:
914 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
915 ethtool_link_ksettings_add_link_mode(ks, supported,
916 1000baseT_Full);
917 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
918 ethtool_link_ksettings_add_link_mode(ks, advertising,
919 1000baseT_Full);
920 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
921 ethtool_link_ksettings_add_link_mode(ks, supported,
922 100baseT_Full);
923 if (hw_link_info->requested_speeds &
924 I40E_LINK_SPEED_100MB)
925 ethtool_link_ksettings_add_link_mode(
926 ks, advertising, 100baseT_Full);
927 }
928 break;
929 case I40E_PHY_TYPE_40GBASE_KR4:
930 case I40E_PHY_TYPE_25GBASE_KR:
931 case I40E_PHY_TYPE_20GBASE_KR2:
932 case I40E_PHY_TYPE_10GBASE_KR:
933 case I40E_PHY_TYPE_10GBASE_KX4:
934 case I40E_PHY_TYPE_1000BASE_KX:
935 ethtool_link_ksettings_add_link_mode(ks, supported,
936 40000baseKR4_Full);
937 ethtool_link_ksettings_add_link_mode(ks, supported,
938 25000baseKR_Full);
939 ethtool_link_ksettings_add_link_mode(ks, supported,
940 20000baseKR2_Full);
941 ethtool_link_ksettings_add_link_mode(ks, supported,
942 10000baseKR_Full);
943 ethtool_link_ksettings_add_link_mode(ks, supported,
944 10000baseKX4_Full);
945 ethtool_link_ksettings_add_link_mode(ks, supported,
946 1000baseKX_Full);
947 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
948 ethtool_link_ksettings_add_link_mode(ks, advertising,
949 40000baseKR4_Full);
950 ethtool_link_ksettings_add_link_mode(ks, advertising,
951 25000baseKR_Full);
952 i40e_get_settings_link_up_fec(req_fec_info: hw_link_info->req_fec_info, ks);
953 ethtool_link_ksettings_add_link_mode(ks, advertising,
954 20000baseKR2_Full);
955 ethtool_link_ksettings_add_link_mode(ks, advertising,
956 10000baseKR_Full);
957 ethtool_link_ksettings_add_link_mode(ks, advertising,
958 10000baseKX4_Full);
959 ethtool_link_ksettings_add_link_mode(ks, advertising,
960 1000baseKX_Full);
961 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
962 break;
963 case I40E_PHY_TYPE_25GBASE_CR:
964 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
965 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
966 ethtool_link_ksettings_add_link_mode(ks, supported,
967 25000baseCR_Full);
968 ethtool_link_ksettings_add_link_mode(ks, advertising,
969 25000baseCR_Full);
970 i40e_get_settings_link_up_fec(req_fec_info: hw_link_info->req_fec_info, ks);
971
972 break;
973 case I40E_PHY_TYPE_25GBASE_AOC:
974 case I40E_PHY_TYPE_25GBASE_ACC:
975 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
976 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
977 ethtool_link_ksettings_add_link_mode(ks, supported,
978 25000baseCR_Full);
979 ethtool_link_ksettings_add_link_mode(ks, advertising,
980 25000baseCR_Full);
981 i40e_get_settings_link_up_fec(req_fec_info: hw_link_info->req_fec_info, ks);
982
983 ethtool_link_ksettings_add_link_mode(ks, supported,
984 10000baseCR_Full);
985 ethtool_link_ksettings_add_link_mode(ks, advertising,
986 10000baseCR_Full);
987 break;
988 default:
989 /* if we got here and link is up something bad is afoot */
990 netdev_info(dev: netdev,
991 format: "WARNING: Link is up but PHY type 0x%x is not recognized, or incorrect cable is in use\n",
992 hw_link_info->phy_type);
993 }
994
995 /* Now that we've worked out everything that could be supported by the
996 * current PHY type, get what is supported by the NVM and intersect
997 * them to get what is truly supported
998 */
999 memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
1000 i40e_phy_type_to_ethtool(pf, ks: &cap_ksettings);
1001 ethtool_intersect_link_masks(dst: ks, src: &cap_ksettings);
1002
1003 /* Set speed and duplex */
1004 switch (link_speed) {
1005 case I40E_LINK_SPEED_40GB:
1006 ks->base.speed = SPEED_40000;
1007 break;
1008 case I40E_LINK_SPEED_25GB:
1009 ks->base.speed = SPEED_25000;
1010 break;
1011 case I40E_LINK_SPEED_20GB:
1012 ks->base.speed = SPEED_20000;
1013 break;
1014 case I40E_LINK_SPEED_10GB:
1015 ks->base.speed = SPEED_10000;
1016 break;
1017 case I40E_LINK_SPEED_5GB:
1018 ks->base.speed = SPEED_5000;
1019 break;
1020 case I40E_LINK_SPEED_2_5GB:
1021 ks->base.speed = SPEED_2500;
1022 break;
1023 case I40E_LINK_SPEED_1GB:
1024 ks->base.speed = SPEED_1000;
1025 break;
1026 case I40E_LINK_SPEED_100MB:
1027 ks->base.speed = SPEED_100;
1028 break;
1029 default:
1030 ks->base.speed = SPEED_UNKNOWN;
1031 break;
1032 }
1033 ks->base.duplex = DUPLEX_FULL;
1034}
1035
1036/**
1037 * i40e_get_settings_link_down - Get the Link settings for when link is down
1038 * @hw: hw structure
1039 * @ks: ethtool ksettings to fill in
1040 * @pf: pointer to physical function struct
1041 *
1042 * Reports link settings that can be determined when link is down
1043 **/
1044static void i40e_get_settings_link_down(struct i40e_hw *hw,
1045 struct ethtool_link_ksettings *ks,
1046 struct i40e_pf *pf)
1047{
1048 /* link is down and the driver needs to fall back on
1049 * supported phy types to figure out what info to display
1050 */
1051 i40e_phy_type_to_ethtool(pf, ks);
1052
1053 /* With no link speed and duplex are unknown */
1054 ks->base.speed = SPEED_UNKNOWN;
1055 ks->base.duplex = DUPLEX_UNKNOWN;
1056}
1057
1058/**
1059 * i40e_get_link_ksettings - Get Link Speed and Duplex settings
1060 * @netdev: network interface device structure
1061 * @ks: ethtool ksettings
1062 *
1063 * Reports speed/duplex settings based on media_type
1064 **/
1065static int i40e_get_link_ksettings(struct net_device *netdev,
1066 struct ethtool_link_ksettings *ks)
1067{
1068 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1069 struct i40e_pf *pf = np->vsi->back;
1070 struct i40e_hw *hw = &pf->hw;
1071 struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1072 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1073
1074 ethtool_link_ksettings_zero_link_mode(ks, supported);
1075 ethtool_link_ksettings_zero_link_mode(ks, advertising);
1076
1077 if (link_up)
1078 i40e_get_settings_link_up(hw, ks, netdev, pf);
1079 else
1080 i40e_get_settings_link_down(hw, ks, pf);
1081
1082 /* Now set the settings that don't rely on link being up/down */
1083 /* Set autoneg settings */
1084 ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1085 AUTONEG_ENABLE : AUTONEG_DISABLE);
1086
1087 /* Set media type settings */
1088 switch (hw->phy.media_type) {
1089 case I40E_MEDIA_TYPE_BACKPLANE:
1090 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
1091 ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
1092 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
1093 ethtool_link_ksettings_add_link_mode(ks, advertising,
1094 Backplane);
1095 ks->base.port = PORT_NONE;
1096 break;
1097 case I40E_MEDIA_TYPE_BASET:
1098 ethtool_link_ksettings_add_link_mode(ks, supported, TP);
1099 ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
1100 ks->base.port = PORT_TP;
1101 break;
1102 case I40E_MEDIA_TYPE_DA:
1103 case I40E_MEDIA_TYPE_CX4:
1104 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1105 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1106 ks->base.port = PORT_DA;
1107 break;
1108 case I40E_MEDIA_TYPE_FIBER:
1109 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1110 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1111 ks->base.port = PORT_FIBRE;
1112 break;
1113 case I40E_MEDIA_TYPE_UNKNOWN:
1114 default:
1115 ks->base.port = PORT_OTHER;
1116 break;
1117 }
1118
1119 /* Set flow control settings */
1120 ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
1121 ethtool_link_ksettings_add_link_mode(ks, supported, Asym_Pause);
1122
1123 switch (hw->fc.requested_mode) {
1124 case I40E_FC_FULL:
1125 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1126 break;
1127 case I40E_FC_TX_PAUSE:
1128 ethtool_link_ksettings_add_link_mode(ks, advertising,
1129 Asym_Pause);
1130 break;
1131 case I40E_FC_RX_PAUSE:
1132 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1133 ethtool_link_ksettings_add_link_mode(ks, advertising,
1134 Asym_Pause);
1135 break;
1136 default:
1137 ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
1138 ethtool_link_ksettings_del_link_mode(ks, advertising,
1139 Asym_Pause);
1140 break;
1141 }
1142
1143 return 0;
1144}
1145
1146#define I40E_LBIT_SIZE 8
1147/**
1148 * i40e_speed_to_link_speed - Translate decimal speed to i40e_aq_link_speed
1149 * @speed: speed in decimal
1150 * @ks: ethtool ksettings
1151 *
1152 * Return i40e_aq_link_speed based on speed
1153 **/
1154static enum i40e_aq_link_speed
1155i40e_speed_to_link_speed(__u32 speed, const struct ethtool_link_ksettings *ks)
1156{
1157 enum i40e_aq_link_speed link_speed = I40E_LINK_SPEED_UNKNOWN;
1158 bool speed_changed = false;
1159 int i, j;
1160
1161 static const struct {
1162 __u32 speed;
1163 enum i40e_aq_link_speed link_speed;
1164 __u8 bit[I40E_LBIT_SIZE];
1165 } i40e_speed_lut[] = {
1166#define I40E_LBIT(mode) ETHTOOL_LINK_MODE_ ## mode ##_Full_BIT
1167 {SPEED_100, I40E_LINK_SPEED_100MB, {I40E_LBIT(100baseT)} },
1168 {SPEED_1000, I40E_LINK_SPEED_1GB,
1169 {I40E_LBIT(1000baseT), I40E_LBIT(1000baseX),
1170 I40E_LBIT(1000baseKX)} },
1171 {SPEED_10000, I40E_LINK_SPEED_10GB,
1172 {I40E_LBIT(10000baseT), I40E_LBIT(10000baseKR),
1173 I40E_LBIT(10000baseLR), I40E_LBIT(10000baseCR),
1174 I40E_LBIT(10000baseSR), I40E_LBIT(10000baseKX4)} },
1175
1176 {SPEED_25000, I40E_LINK_SPEED_25GB,
1177 {I40E_LBIT(25000baseCR), I40E_LBIT(25000baseKR),
1178 I40E_LBIT(25000baseSR)} },
1179 {SPEED_40000, I40E_LINK_SPEED_40GB,
1180 {I40E_LBIT(40000baseKR4), I40E_LBIT(40000baseCR4),
1181 I40E_LBIT(40000baseSR4), I40E_LBIT(40000baseLR4)} },
1182 {SPEED_20000, I40E_LINK_SPEED_20GB,
1183 {I40E_LBIT(20000baseKR2)} },
1184 {SPEED_2500, I40E_LINK_SPEED_2_5GB, {I40E_LBIT(2500baseT)} },
1185 {SPEED_5000, I40E_LINK_SPEED_5GB, {I40E_LBIT(2500baseT)} }
1186#undef I40E_LBIT
1187};
1188
1189 for (i = 0; i < ARRAY_SIZE(i40e_speed_lut); i++) {
1190 if (i40e_speed_lut[i].speed == speed) {
1191 for (j = 0; j < I40E_LBIT_SIZE; j++) {
1192 if (test_bit(i40e_speed_lut[i].bit[j],
1193 ks->link_modes.supported)) {
1194 speed_changed = true;
1195 break;
1196 }
1197 if (!i40e_speed_lut[i].bit[j])
1198 break;
1199 }
1200 if (speed_changed) {
1201 link_speed = i40e_speed_lut[i].link_speed;
1202 break;
1203 }
1204 }
1205 }
1206 return link_speed;
1207}
1208
1209#undef I40E_LBIT_SIZE
1210
1211/**
1212 * i40e_set_link_ksettings - Set Speed and Duplex
1213 * @netdev: network interface device structure
1214 * @ks: ethtool ksettings
1215 *
1216 * Set speed/duplex per media_types advertised/forced
1217 **/
1218static int i40e_set_link_ksettings(struct net_device *netdev,
1219 const struct ethtool_link_ksettings *ks)
1220{
1221 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1222 struct i40e_aq_get_phy_abilities_resp abilities;
1223 struct ethtool_link_ksettings safe_ks;
1224 struct ethtool_link_ksettings copy_ks;
1225 struct i40e_aq_set_phy_config config;
1226 struct i40e_pf *pf = np->vsi->back;
1227 enum i40e_aq_link_speed link_speed;
1228 struct i40e_vsi *vsi = np->vsi;
1229 struct i40e_hw *hw = &pf->hw;
1230 bool autoneg_changed = false;
1231 int timeout = 50;
1232 int status = 0;
1233 int err = 0;
1234 __u32 speed;
1235 u8 autoneg;
1236
1237 /* Changing port settings is not supported if this isn't the
1238 * port's controlling PF
1239 */
1240 if (hw->partition_id != 1) {
1241 i40e_partition_setting_complaint(pf);
1242 return -EOPNOTSUPP;
1243 }
1244 if (vsi != pf->vsi[pf->lan_vsi])
1245 return -EOPNOTSUPP;
1246 if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
1247 hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
1248 hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
1249 hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
1250 hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
1251 return -EOPNOTSUPP;
1252 if (hw->device_id == I40E_DEV_ID_KX_B ||
1253 hw->device_id == I40E_DEV_ID_KX_C ||
1254 hw->device_id == I40E_DEV_ID_20G_KR2 ||
1255 hw->device_id == I40E_DEV_ID_20G_KR2_A ||
1256 hw->device_id == I40E_DEV_ID_25G_B ||
1257 hw->device_id == I40E_DEV_ID_KX_X722) {
1258 netdev_info(dev: netdev, format: "Changing settings is not supported on backplane.\n");
1259 return -EOPNOTSUPP;
1260 }
1261
1262 /* copy the ksettings to copy_ks to avoid modifying the origin */
1263 memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
1264
1265 /* save autoneg out of ksettings */
1266 autoneg = copy_ks.base.autoneg;
1267 speed = copy_ks.base.speed;
1268
1269 /* get our own copy of the bits to check against */
1270 memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
1271 safe_ks.base.cmd = copy_ks.base.cmd;
1272 safe_ks.base.link_mode_masks_nwords =
1273 copy_ks.base.link_mode_masks_nwords;
1274 i40e_get_link_ksettings(netdev, ks: &safe_ks);
1275
1276 /* Get link modes supported by hardware and check against modes
1277 * requested by the user. Return an error if unsupported mode was set.
1278 */
1279 if (!bitmap_subset(src1: copy_ks.link_modes.advertising,
1280 src2: safe_ks.link_modes.supported,
1281 nbits: __ETHTOOL_LINK_MODE_MASK_NBITS))
1282 return -EINVAL;
1283
1284 /* set autoneg back to what it currently is */
1285 copy_ks.base.autoneg = safe_ks.base.autoneg;
1286 copy_ks.base.speed = safe_ks.base.speed;
1287
1288 /* If copy_ks.base and safe_ks.base are not the same now, then they are
1289 * trying to set something that we do not support.
1290 */
1291 if (memcmp(p: &copy_ks.base, q: &safe_ks.base,
1292 size: sizeof(struct ethtool_link_settings))) {
1293 netdev_err(dev: netdev, format: "Only speed and autoneg are supported.\n");
1294 return -EOPNOTSUPP;
1295 }
1296
1297 while (test_and_set_bit(nr: __I40E_CONFIG_BUSY, addr: pf->state)) {
1298 timeout--;
1299 if (!timeout)
1300 return -EBUSY;
1301 usleep_range(min: 1000, max: 2000);
1302 }
1303
1304 /* Get the current phy config */
1305 status = i40e_aq_get_phy_capabilities(hw, qualified_modules: false, report_init: false, abilities: &abilities,
1306 NULL);
1307 if (status) {
1308 err = -EAGAIN;
1309 goto done;
1310 }
1311
1312 /* Copy abilities to config in case autoneg is not
1313 * set below
1314 */
1315 memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
1316 config.abilities = abilities.abilities;
1317
1318 /* Check autoneg */
1319 if (autoneg == AUTONEG_ENABLE) {
1320 /* If autoneg was not already enabled */
1321 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
1322 /* If autoneg is not supported, return error */
1323 if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
1324 supported,
1325 Autoneg)) {
1326 netdev_info(dev: netdev, format: "Autoneg not supported on this phy\n");
1327 err = -EINVAL;
1328 goto done;
1329 }
1330 /* Autoneg is allowed to change */
1331 config.abilities = abilities.abilities |
1332 I40E_AQ_PHY_ENABLE_AN;
1333 autoneg_changed = true;
1334 }
1335 } else {
1336 /* If autoneg is currently enabled */
1337 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
1338 /* If autoneg is supported 10GBASE_T is the only PHY
1339 * that can disable it, so otherwise return error
1340 */
1341 if (ethtool_link_ksettings_test_link_mode(&safe_ks,
1342 supported,
1343 Autoneg) &&
1344 hw->phy.media_type != I40E_MEDIA_TYPE_BASET) {
1345 netdev_info(dev: netdev, format: "Autoneg cannot be disabled on this phy\n");
1346 err = -EINVAL;
1347 goto done;
1348 }
1349 /* Autoneg is allowed to change */
1350 config.abilities = abilities.abilities &
1351 ~I40E_AQ_PHY_ENABLE_AN;
1352 autoneg_changed = true;
1353 }
1354 }
1355
1356 if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1357 100baseT_Full))
1358 config.link_speed |= I40E_LINK_SPEED_100MB;
1359 if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1360 1000baseT_Full) ||
1361 ethtool_link_ksettings_test_link_mode(ks, advertising,
1362 1000baseX_Full) ||
1363 ethtool_link_ksettings_test_link_mode(ks, advertising,
1364 1000baseKX_Full))
1365 config.link_speed |= I40E_LINK_SPEED_1GB;
1366 if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1367 10000baseT_Full) ||
1368 ethtool_link_ksettings_test_link_mode(ks, advertising,
1369 10000baseKX4_Full) ||
1370 ethtool_link_ksettings_test_link_mode(ks, advertising,
1371 10000baseKR_Full) ||
1372 ethtool_link_ksettings_test_link_mode(ks, advertising,
1373 10000baseCR_Full) ||
1374 ethtool_link_ksettings_test_link_mode(ks, advertising,
1375 10000baseSR_Full) ||
1376 ethtool_link_ksettings_test_link_mode(ks, advertising,
1377 10000baseLR_Full))
1378 config.link_speed |= I40E_LINK_SPEED_10GB;
1379 if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1380 2500baseT_Full))
1381 config.link_speed |= I40E_LINK_SPEED_2_5GB;
1382 if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1383 5000baseT_Full))
1384 config.link_speed |= I40E_LINK_SPEED_5GB;
1385 if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1386 20000baseKR2_Full))
1387 config.link_speed |= I40E_LINK_SPEED_20GB;
1388 if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1389 25000baseCR_Full) ||
1390 ethtool_link_ksettings_test_link_mode(ks, advertising,
1391 25000baseKR_Full) ||
1392 ethtool_link_ksettings_test_link_mode(ks, advertising,
1393 25000baseSR_Full))
1394 config.link_speed |= I40E_LINK_SPEED_25GB;
1395 if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1396 40000baseKR4_Full) ||
1397 ethtool_link_ksettings_test_link_mode(ks, advertising,
1398 40000baseCR4_Full) ||
1399 ethtool_link_ksettings_test_link_mode(ks, advertising,
1400 40000baseSR4_Full) ||
1401 ethtool_link_ksettings_test_link_mode(ks, advertising,
1402 40000baseLR4_Full))
1403 config.link_speed |= I40E_LINK_SPEED_40GB;
1404
1405 /* Autonegotiation must be disabled to change speed */
1406 if ((speed != SPEED_UNKNOWN && safe_ks.base.speed != speed) &&
1407 (autoneg == AUTONEG_DISABLE ||
1408 (safe_ks.base.autoneg == AUTONEG_DISABLE && !autoneg_changed))) {
1409 link_speed = i40e_speed_to_link_speed(speed, ks);
1410 if (link_speed == I40E_LINK_SPEED_UNKNOWN) {
1411 netdev_info(dev: netdev, format: "Given speed is not supported\n");
1412 err = -EOPNOTSUPP;
1413 goto done;
1414 } else {
1415 config.link_speed = link_speed;
1416 }
1417 } else {
1418 if (safe_ks.base.speed != speed) {
1419 netdev_info(dev: netdev,
1420 format: "Unable to set speed, disable autoneg\n");
1421 err = -EOPNOTSUPP;
1422 goto done;
1423 }
1424 }
1425
1426 /* If speed didn't get set, set it to what it currently is.
1427 * This is needed because if advertise is 0 (as it is when autoneg
1428 * is disabled) then speed won't get set.
1429 */
1430 if (!config.link_speed)
1431 config.link_speed = abilities.link_speed;
1432 if (autoneg_changed || abilities.link_speed != config.link_speed) {
1433 /* copy over the rest of the abilities */
1434 config.phy_type = abilities.phy_type;
1435 config.phy_type_ext = abilities.phy_type_ext;
1436 config.eee_capability = abilities.eee_capability;
1437 config.eeer = abilities.eeer_val;
1438 config.low_power_ctrl = abilities.d3_lpan;
1439 config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
1440 I40E_AQ_PHY_FEC_CONFIG_MASK;
1441
1442 /* save the requested speeds */
1443 hw->phy.link_info.requested_speeds = config.link_speed;
1444 /* set link and auto negotiation so changes take effect */
1445 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1446 /* If link is up put link down */
1447 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
1448 /* Tell the OS link is going down, the link will go
1449 * back up when fw says it is ready asynchronously
1450 */
1451 i40e_print_link_message(vsi, isup: false);
1452 netif_carrier_off(dev: netdev);
1453 netif_tx_stop_all_queues(dev: netdev);
1454 }
1455
1456 /* make the aq call */
1457 status = i40e_aq_set_phy_config(hw, config: &config, NULL);
1458 if (status) {
1459 netdev_info(dev: netdev,
1460 format: "Set phy config failed, err %pe aq_err %s\n",
1461 ERR_PTR(error: status),
1462 i40e_aq_str(hw, aq_err: hw->aq.asq_last_status));
1463 err = -EAGAIN;
1464 goto done;
1465 }
1466
1467 status = i40e_update_link_info(hw);
1468 if (status)
1469 netdev_dbg(netdev,
1470 "Updating link info failed with err %pe aq_err %s\n",
1471 ERR_PTR(status),
1472 i40e_aq_str(hw, hw->aq.asq_last_status));
1473
1474 } else {
1475 netdev_info(dev: netdev, format: "Nothing changed, exiting without setting anything.\n");
1476 }
1477
1478done:
1479 clear_bit(nr: __I40E_CONFIG_BUSY, addr: pf->state);
1480
1481 return err;
1482}
1483
1484static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg)
1485{
1486 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1487 struct i40e_aq_get_phy_abilities_resp abilities;
1488 struct i40e_pf *pf = np->vsi->back;
1489 struct i40e_hw *hw = &pf->hw;
1490 int status = 0;
1491 u32 flags = 0;
1492 int err = 0;
1493
1494 flags = READ_ONCE(pf->flags);
1495 i40e_set_fec_in_flags(fec_cfg, flags: &flags);
1496
1497 /* Get the current phy config */
1498 memset(&abilities, 0, sizeof(abilities));
1499 status = i40e_aq_get_phy_capabilities(hw, qualified_modules: false, report_init: false, abilities: &abilities,
1500 NULL);
1501 if (status) {
1502 err = -EAGAIN;
1503 goto done;
1504 }
1505
1506 if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) {
1507 struct i40e_aq_set_phy_config config;
1508
1509 memset(&config, 0, sizeof(config));
1510 config.phy_type = abilities.phy_type;
1511 config.abilities = abilities.abilities |
1512 I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1513 config.phy_type_ext = abilities.phy_type_ext;
1514 config.link_speed = abilities.link_speed;
1515 config.eee_capability = abilities.eee_capability;
1516 config.eeer = abilities.eeer_val;
1517 config.low_power_ctrl = abilities.d3_lpan;
1518 config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK;
1519 status = i40e_aq_set_phy_config(hw, config: &config, NULL);
1520 if (status) {
1521 netdev_info(dev: netdev,
1522 format: "Set phy config failed, err %pe aq_err %s\n",
1523 ERR_PTR(error: status),
1524 i40e_aq_str(hw, aq_err: hw->aq.asq_last_status));
1525 err = -EAGAIN;
1526 goto done;
1527 }
1528 pf->flags = flags;
1529 status = i40e_update_link_info(hw);
1530 if (status)
1531 /* debug level message only due to relation to the link
1532 * itself rather than to the FEC settings
1533 * (e.g. no physical connection etc.)
1534 */
1535 netdev_dbg(netdev,
1536 "Updating link info failed with err %pe aq_err %s\n",
1537 ERR_PTR(status),
1538 i40e_aq_str(hw, hw->aq.asq_last_status));
1539 }
1540
1541done:
1542 return err;
1543}
1544
1545static int i40e_get_fec_param(struct net_device *netdev,
1546 struct ethtool_fecparam *fecparam)
1547{
1548 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1549 struct i40e_aq_get_phy_abilities_resp abilities;
1550 struct i40e_pf *pf = np->vsi->back;
1551 struct i40e_hw *hw = &pf->hw;
1552 int status = 0;
1553 int err = 0;
1554 u8 fec_cfg;
1555
1556 /* Get the current phy config */
1557 memset(&abilities, 0, sizeof(abilities));
1558 status = i40e_aq_get_phy_capabilities(hw, qualified_modules: false, report_init: false, abilities: &abilities,
1559 NULL);
1560 if (status) {
1561 err = -EAGAIN;
1562 goto done;
1563 }
1564
1565 fecparam->fec = 0;
1566 fec_cfg = abilities.fec_cfg_curr_mod_ext_info;
1567 if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
1568 fecparam->fec |= ETHTOOL_FEC_AUTO;
1569 else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_RS |
1570 I40E_AQ_SET_FEC_ABILITY_RS))
1571 fecparam->fec |= ETHTOOL_FEC_RS;
1572 else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_KR |
1573 I40E_AQ_SET_FEC_ABILITY_KR))
1574 fecparam->fec |= ETHTOOL_FEC_BASER;
1575 if (fec_cfg == 0)
1576 fecparam->fec |= ETHTOOL_FEC_OFF;
1577
1578 if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA)
1579 fecparam->active_fec = ETHTOOL_FEC_BASER;
1580 else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA)
1581 fecparam->active_fec = ETHTOOL_FEC_RS;
1582 else
1583 fecparam->active_fec = ETHTOOL_FEC_OFF;
1584done:
1585 return err;
1586}
1587
1588static int i40e_set_fec_param(struct net_device *netdev,
1589 struct ethtool_fecparam *fecparam)
1590{
1591 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1592 struct i40e_pf *pf = np->vsi->back;
1593 struct i40e_hw *hw = &pf->hw;
1594 u8 fec_cfg = 0;
1595
1596 if (hw->device_id != I40E_DEV_ID_25G_SFP28 &&
1597 hw->device_id != I40E_DEV_ID_25G_B &&
1598 hw->device_id != I40E_DEV_ID_KX_X722)
1599 return -EPERM;
1600
1601 if (hw->mac.type == I40E_MAC_X722 &&
1602 !(hw->flags & I40E_HW_FLAG_X722_FEC_REQUEST_CAPABLE)) {
1603 netdev_err(dev: netdev, format: "Setting FEC encoding not supported by firmware. Please update the NVM image.\n");
1604 return -EOPNOTSUPP;
1605 }
1606
1607 switch (fecparam->fec) {
1608 case ETHTOOL_FEC_AUTO:
1609 fec_cfg = I40E_AQ_SET_FEC_AUTO;
1610 break;
1611 case ETHTOOL_FEC_RS:
1612 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
1613 I40E_AQ_SET_FEC_ABILITY_RS);
1614 break;
1615 case ETHTOOL_FEC_BASER:
1616 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
1617 I40E_AQ_SET_FEC_ABILITY_KR);
1618 break;
1619 case ETHTOOL_FEC_OFF:
1620 case ETHTOOL_FEC_NONE:
1621 fec_cfg = 0;
1622 break;
1623 default:
1624 dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d",
1625 fecparam->fec);
1626 return -EINVAL;
1627 }
1628
1629 return i40e_set_fec_cfg(netdev, fec_cfg);
1630}
1631
1632static int i40e_nway_reset(struct net_device *netdev)
1633{
1634 /* restart autonegotiation */
1635 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1636 struct i40e_pf *pf = np->vsi->back;
1637 struct i40e_hw *hw = &pf->hw;
1638 bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
1639 int ret = 0;
1640
1641 ret = i40e_aq_set_link_restart_an(hw, enable_link: link_up, NULL);
1642 if (ret) {
1643 netdev_info(dev: netdev, format: "link restart failed, err %pe aq_err %s\n",
1644 ERR_PTR(error: ret),
1645 i40e_aq_str(hw, aq_err: hw->aq.asq_last_status));
1646 return -EIO;
1647 }
1648
1649 return 0;
1650}
1651
1652/**
1653 * i40e_get_pauseparam - Get Flow Control status
1654 * @netdev: netdevice structure
1655 * @pause: buffer to return pause parameters
1656 *
1657 * Return tx/rx-pause status
1658 **/
1659static void i40e_get_pauseparam(struct net_device *netdev,
1660 struct ethtool_pauseparam *pause)
1661{
1662 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1663 struct i40e_pf *pf = np->vsi->back;
1664 struct i40e_hw *hw = &pf->hw;
1665 struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1666 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1667
1668 pause->autoneg =
1669 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1670 AUTONEG_ENABLE : AUTONEG_DISABLE);
1671
1672 /* PFC enabled so report LFC as off */
1673 if (dcbx_cfg->pfc.pfcenable) {
1674 pause->rx_pause = 0;
1675 pause->tx_pause = 0;
1676 return;
1677 }
1678
1679 if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
1680 pause->rx_pause = 1;
1681 } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
1682 pause->tx_pause = 1;
1683 } else if (hw->fc.current_mode == I40E_FC_FULL) {
1684 pause->rx_pause = 1;
1685 pause->tx_pause = 1;
1686 }
1687}
1688
1689/**
1690 * i40e_set_pauseparam - Set Flow Control parameter
1691 * @netdev: network interface device structure
1692 * @pause: return tx/rx flow control status
1693 **/
1694static int i40e_set_pauseparam(struct net_device *netdev,
1695 struct ethtool_pauseparam *pause)
1696{
1697 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1698 struct i40e_pf *pf = np->vsi->back;
1699 struct i40e_vsi *vsi = np->vsi;
1700 struct i40e_hw *hw = &pf->hw;
1701 struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1702 struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1703 bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1704 u8 aq_failures;
1705 int err = 0;
1706 int status;
1707 u32 is_an;
1708
1709 /* Changing the port's flow control is not supported if this isn't the
1710 * port's controlling PF
1711 */
1712 if (hw->partition_id != 1) {
1713 i40e_partition_setting_complaint(pf);
1714 return -EOPNOTSUPP;
1715 }
1716
1717 if (vsi != pf->vsi[pf->lan_vsi])
1718 return -EOPNOTSUPP;
1719
1720 is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
1721 if (pause->autoneg != is_an) {
1722 netdev_info(dev: netdev, format: "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
1723 return -EOPNOTSUPP;
1724 }
1725
1726 /* If we have link and don't have autoneg */
1727 if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
1728 /* Send message that it might not necessarily work*/
1729 netdev_info(dev: netdev, format: "Autoneg did not complete so changing settings may not result in an actual change.\n");
1730 }
1731
1732 if (dcbx_cfg->pfc.pfcenable) {
1733 netdev_info(dev: netdev,
1734 format: "Priority flow control enabled. Cannot set link flow control.\n");
1735 return -EOPNOTSUPP;
1736 }
1737
1738 if (pause->rx_pause && pause->tx_pause)
1739 hw->fc.requested_mode = I40E_FC_FULL;
1740 else if (pause->rx_pause && !pause->tx_pause)
1741 hw->fc.requested_mode = I40E_FC_RX_PAUSE;
1742 else if (!pause->rx_pause && pause->tx_pause)
1743 hw->fc.requested_mode = I40E_FC_TX_PAUSE;
1744 else if (!pause->rx_pause && !pause->tx_pause)
1745 hw->fc.requested_mode = I40E_FC_NONE;
1746 else
1747 return -EINVAL;
1748
1749 /* Tell the OS link is going down, the link will go back up when fw
1750 * says it is ready asynchronously
1751 */
1752 i40e_print_link_message(vsi, isup: false);
1753 netif_carrier_off(dev: netdev);
1754 netif_tx_stop_all_queues(dev: netdev);
1755
1756 /* Set the fc mode and only restart an if link is up*/
1757 status = i40e_set_fc(hw, aq_failures: &aq_failures, atomic_reset: link_up);
1758
1759 if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1760 netdev_info(dev: netdev, format: "Set fc failed on the get_phy_capabilities call with err %pe aq_err %s\n",
1761 ERR_PTR(error: status),
1762 i40e_aq_str(hw, aq_err: hw->aq.asq_last_status));
1763 err = -EAGAIN;
1764 }
1765 if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1766 netdev_info(dev: netdev, format: "Set fc failed on the set_phy_config call with err %pe aq_err %s\n",
1767 ERR_PTR(error: status),
1768 i40e_aq_str(hw, aq_err: hw->aq.asq_last_status));
1769 err = -EAGAIN;
1770 }
1771 if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1772 netdev_info(dev: netdev, format: "Set fc failed on the get_link_info call with err %pe aq_err %s\n",
1773 ERR_PTR(error: status),
1774 i40e_aq_str(hw, aq_err: hw->aq.asq_last_status));
1775 err = -EAGAIN;
1776 }
1777
1778 if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
1779 /* Give it a little more time to try to come back */
1780 msleep(msecs: 75);
1781 if (!test_bit(__I40E_DOWN, pf->state))
1782 return i40e_nway_reset(netdev);
1783 }
1784
1785 return err;
1786}
1787
1788static u32 i40e_get_msglevel(struct net_device *netdev)
1789{
1790 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1791 struct i40e_pf *pf = np->vsi->back;
1792 u32 debug_mask = pf->hw.debug_mask;
1793
1794 if (debug_mask)
1795 netdev_info(dev: netdev, format: "i40e debug_mask: 0x%08X\n", debug_mask);
1796
1797 return pf->msg_enable;
1798}
1799
1800static void i40e_set_msglevel(struct net_device *netdev, u32 data)
1801{
1802 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1803 struct i40e_pf *pf = np->vsi->back;
1804
1805 if (I40E_DEBUG_USER & data)
1806 pf->hw.debug_mask = data;
1807 else
1808 pf->msg_enable = data;
1809}
1810
1811static int i40e_get_regs_len(struct net_device *netdev)
1812{
1813 int reg_count = 0;
1814 int i;
1815
1816 for (i = 0; i40e_reg_list[i].offset != 0; i++)
1817 reg_count += i40e_reg_list[i].elements;
1818
1819 return reg_count * sizeof(u32);
1820}
1821
1822static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
1823 void *p)
1824{
1825 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1826 struct i40e_pf *pf = np->vsi->back;
1827 struct i40e_hw *hw = &pf->hw;
1828 u32 *reg_buf = p;
1829 unsigned int i, j, ri;
1830 u32 reg;
1831
1832 /* Tell ethtool which driver-version-specific regs output we have.
1833 *
1834 * At some point, if we have ethtool doing special formatting of
1835 * this data, it will rely on this version number to know how to
1836 * interpret things. Hence, this needs to be updated if/when the
1837 * diags register table is changed.
1838 */
1839 regs->version = 1;
1840
1841 /* loop through the diags reg table for what to print */
1842 ri = 0;
1843 for (i = 0; i40e_reg_list[i].offset != 0; i++) {
1844 for (j = 0; j < i40e_reg_list[i].elements; j++) {
1845 reg = i40e_reg_list[i].offset
1846 + (j * i40e_reg_list[i].stride);
1847 reg_buf[ri++] = rd32(hw, reg);
1848 }
1849 }
1850
1851}
1852
1853static int i40e_get_eeprom(struct net_device *netdev,
1854 struct ethtool_eeprom *eeprom, u8 *bytes)
1855{
1856 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1857 struct i40e_hw *hw = &np->vsi->back->hw;
1858 struct i40e_pf *pf = np->vsi->back;
1859 int ret_val = 0, len, offset;
1860 u8 *eeprom_buff;
1861 u16 i, sectors;
1862 bool last;
1863 u32 magic;
1864
1865#define I40E_NVM_SECTOR_SIZE 4096
1866 if (eeprom->len == 0)
1867 return -EINVAL;
1868
1869 /* check for NVMUpdate access method */
1870 magic = hw->vendor_id | (hw->device_id << 16);
1871 if (eeprom->magic && eeprom->magic != magic) {
1872 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1873 int errno = 0;
1874
1875 /* make sure it is the right magic for NVMUpdate */
1876 if ((eeprom->magic >> 16) != hw->device_id)
1877 errno = -EINVAL;
1878 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1879 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1880 errno = -EBUSY;
1881 else
1882 ret_val = i40e_nvmupd_command(hw, cmd, bytes, errno: &errno);
1883
1884 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1885 dev_info(&pf->pdev->dev,
1886 "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1887 ret_val, hw->aq.asq_last_status, errno,
1888 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1889 cmd->offset, cmd->data_size);
1890
1891 return errno;
1892 }
1893
1894 /* normal ethtool get_eeprom support */
1895 eeprom->magic = hw->vendor_id | (hw->device_id << 16);
1896
1897 eeprom_buff = kzalloc(size: eeprom->len, GFP_KERNEL);
1898 if (!eeprom_buff)
1899 return -ENOMEM;
1900
1901 ret_val = i40e_acquire_nvm(hw, access: I40E_RESOURCE_READ);
1902 if (ret_val) {
1903 dev_info(&pf->pdev->dev,
1904 "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1905 ret_val, hw->aq.asq_last_status);
1906 goto free_buff;
1907 }
1908
1909 sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
1910 sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
1911 len = I40E_NVM_SECTOR_SIZE;
1912 last = false;
1913 for (i = 0; i < sectors; i++) {
1914 if (i == (sectors - 1)) {
1915 len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
1916 last = true;
1917 }
1918 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
1919 ret_val = i40e_aq_read_nvm(hw, module_pointer: 0x0, offset, length: len,
1920 data: (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1921 last_command: last, NULL);
1922 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1923 dev_info(&pf->pdev->dev,
1924 "read NVM failed, invalid offset 0x%x\n",
1925 offset);
1926 break;
1927 } else if (ret_val &&
1928 hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
1929 dev_info(&pf->pdev->dev,
1930 "read NVM failed, access, offset 0x%x\n",
1931 offset);
1932 break;
1933 } else if (ret_val) {
1934 dev_info(&pf->pdev->dev,
1935 "read NVM failed offset %d err=%d status=0x%x\n",
1936 offset, ret_val, hw->aq.asq_last_status);
1937 break;
1938 }
1939 }
1940
1941 i40e_release_nvm(hw);
1942 memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1943free_buff:
1944 kfree(objp: eeprom_buff);
1945 return ret_val;
1946}
1947
1948static int i40e_get_eeprom_len(struct net_device *netdev)
1949{
1950 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1951 struct i40e_hw *hw = &np->vsi->back->hw;
1952 u32 val;
1953
1954#define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
1955 if (hw->mac.type == I40E_MAC_X722) {
1956 val = X722_EEPROM_SCOPE_LIMIT + 1;
1957 return val;
1958 }
1959 val = (rd32(hw, I40E_GLPCI_LBARCTRL)
1960 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
1961 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
1962 /* register returns value in power of 2, 64Kbyte chunks. */
1963 val = (64 * 1024) * BIT(val);
1964 return val;
1965}
1966
1967static int i40e_set_eeprom(struct net_device *netdev,
1968 struct ethtool_eeprom *eeprom, u8 *bytes)
1969{
1970 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
1971 struct i40e_hw *hw = &np->vsi->back->hw;
1972 struct i40e_pf *pf = np->vsi->back;
1973 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1974 int ret_val = 0;
1975 int errno = 0;
1976 u32 magic;
1977
1978 /* normal ethtool set_eeprom is not supported */
1979 magic = hw->vendor_id | (hw->device_id << 16);
1980 if (eeprom->magic == magic)
1981 errno = -EOPNOTSUPP;
1982 /* check for NVMUpdate access method */
1983 else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
1984 errno = -EINVAL;
1985 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1986 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1987 errno = -EBUSY;
1988 else
1989 ret_val = i40e_nvmupd_command(hw, cmd, bytes, errno: &errno);
1990
1991 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1992 dev_info(&pf->pdev->dev,
1993 "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1994 ret_val, hw->aq.asq_last_status, errno,
1995 (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1996 cmd->offset, cmd->data_size);
1997
1998 return errno;
1999}
2000
2001static void i40e_get_drvinfo(struct net_device *netdev,
2002 struct ethtool_drvinfo *drvinfo)
2003{
2004 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2005 struct i40e_vsi *vsi = np->vsi;
2006 struct i40e_pf *pf = vsi->back;
2007
2008 strscpy(p: drvinfo->driver, q: i40e_driver_name, size: sizeof(drvinfo->driver));
2009 i40e_nvm_version_str(hw: &pf->hw, buf: drvinfo->fw_version,
2010 len: sizeof(drvinfo->fw_version));
2011 strscpy(p: drvinfo->bus_info, q: pci_name(pdev: pf->pdev),
2012 size: sizeof(drvinfo->bus_info));
2013 drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
2014 if (pf->hw.pf_id == 0)
2015 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
2016}
2017
2018static void i40e_get_ringparam(struct net_device *netdev,
2019 struct ethtool_ringparam *ring,
2020 struct kernel_ethtool_ringparam *kernel_ring,
2021 struct netlink_ext_ack *extack)
2022{
2023 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2024 struct i40e_pf *pf = np->vsi->back;
2025 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
2026
2027 ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
2028 ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
2029 ring->rx_mini_max_pending = 0;
2030 ring->rx_jumbo_max_pending = 0;
2031 ring->rx_pending = vsi->rx_rings[0]->count;
2032 ring->tx_pending = vsi->tx_rings[0]->count;
2033 ring->rx_mini_pending = 0;
2034 ring->rx_jumbo_pending = 0;
2035}
2036
2037static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
2038{
2039 if (i40e_enabled_xdp_vsi(vsi)) {
2040 return index < vsi->num_queue_pairs ||
2041 (index >= vsi->alloc_queue_pairs &&
2042 index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
2043 }
2044
2045 return index < vsi->num_queue_pairs;
2046}
2047
2048static int i40e_set_ringparam(struct net_device *netdev,
2049 struct ethtool_ringparam *ring,
2050 struct kernel_ethtool_ringparam *kernel_ring,
2051 struct netlink_ext_ack *extack)
2052{
2053 struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
2054 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2055 struct i40e_hw *hw = &np->vsi->back->hw;
2056 struct i40e_vsi *vsi = np->vsi;
2057 struct i40e_pf *pf = vsi->back;
2058 u32 new_rx_count, new_tx_count;
2059 u16 tx_alloc_queue_pairs;
2060 int timeout = 50;
2061 int i, err = 0;
2062
2063 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
2064 return -EINVAL;
2065
2066 if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
2067 ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
2068 ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
2069 ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
2070 netdev_info(dev: netdev,
2071 format: "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
2072 ring->tx_pending, ring->rx_pending,
2073 I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
2074 return -EINVAL;
2075 }
2076
2077 new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
2078 new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
2079
2080 /* if nothing to do return success */
2081 if ((new_tx_count == vsi->tx_rings[0]->count) &&
2082 (new_rx_count == vsi->rx_rings[0]->count))
2083 return 0;
2084
2085 /* If there is a AF_XDP page pool attached to any of Rx rings,
2086 * disallow changing the number of descriptors -- regardless
2087 * if the netdev is running or not.
2088 */
2089 if (i40e_xsk_any_rx_ring_enabled(vsi))
2090 return -EBUSY;
2091
2092 while (test_and_set_bit(nr: __I40E_CONFIG_BUSY, addr: pf->state)) {
2093 timeout--;
2094 if (!timeout)
2095 return -EBUSY;
2096 usleep_range(min: 1000, max: 2000);
2097 }
2098
2099 if (!netif_running(dev: vsi->netdev)) {
2100 /* simple case - set for the next time the netdev is started */
2101 for (i = 0; i < vsi->num_queue_pairs; i++) {
2102 vsi->tx_rings[i]->count = new_tx_count;
2103 vsi->rx_rings[i]->count = new_rx_count;
2104 if (i40e_enabled_xdp_vsi(vsi))
2105 vsi->xdp_rings[i]->count = new_tx_count;
2106 }
2107 vsi->num_tx_desc = new_tx_count;
2108 vsi->num_rx_desc = new_rx_count;
2109 goto done;
2110 }
2111
2112 /* We can't just free everything and then setup again,
2113 * because the ISRs in MSI-X mode get passed pointers
2114 * to the Tx and Rx ring structs.
2115 */
2116
2117 /* alloc updated Tx and XDP Tx resources */
2118 tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
2119 (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
2120 if (new_tx_count != vsi->tx_rings[0]->count) {
2121 netdev_info(dev: netdev,
2122 format: "Changing Tx descriptor count from %d to %d.\n",
2123 vsi->tx_rings[0]->count, new_tx_count);
2124 tx_rings = kcalloc(n: tx_alloc_queue_pairs,
2125 size: sizeof(struct i40e_ring), GFP_KERNEL);
2126 if (!tx_rings) {
2127 err = -ENOMEM;
2128 goto done;
2129 }
2130
2131 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2132 if (!i40e_active_tx_ring_index(vsi, index: i))
2133 continue;
2134
2135 tx_rings[i] = *vsi->tx_rings[i];
2136 tx_rings[i].count = new_tx_count;
2137 /* the desc and bi pointers will be reallocated in the
2138 * setup call
2139 */
2140 tx_rings[i].desc = NULL;
2141 tx_rings[i].rx_bi = NULL;
2142 err = i40e_setup_tx_descriptors(tx_ring: &tx_rings[i]);
2143 if (err) {
2144 while (i) {
2145 i--;
2146 if (!i40e_active_tx_ring_index(vsi, index: i))
2147 continue;
2148 i40e_free_tx_resources(tx_ring: &tx_rings[i]);
2149 }
2150 kfree(objp: tx_rings);
2151 tx_rings = NULL;
2152
2153 goto done;
2154 }
2155 }
2156 }
2157
2158 /* alloc updated Rx resources */
2159 if (new_rx_count != vsi->rx_rings[0]->count) {
2160 netdev_info(dev: netdev,
2161 format: "Changing Rx descriptor count from %d to %d\n",
2162 vsi->rx_rings[0]->count, new_rx_count);
2163 rx_rings = kcalloc(n: vsi->alloc_queue_pairs,
2164 size: sizeof(struct i40e_ring), GFP_KERNEL);
2165 if (!rx_rings) {
2166 err = -ENOMEM;
2167 goto free_tx;
2168 }
2169
2170 for (i = 0; i < vsi->num_queue_pairs; i++) {
2171 u16 unused;
2172
2173 /* clone ring and setup updated count */
2174 rx_rings[i] = *vsi->rx_rings[i];
2175 rx_rings[i].count = new_rx_count;
2176 /* the desc and bi pointers will be reallocated in the
2177 * setup call
2178 */
2179 rx_rings[i].desc = NULL;
2180 rx_rings[i].rx_bi = NULL;
2181 /* Clear cloned XDP RX-queue info before setup call */
2182 memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
2183 /* this is to allow wr32 to have something to write to
2184 * during early allocation of Rx buffers
2185 */
2186 rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
2187 err = i40e_setup_rx_descriptors(rx_ring: &rx_rings[i]);
2188 if (err)
2189 goto rx_unwind;
2190
2191 /* now allocate the Rx buffers to make sure the OS
2192 * has enough memory, any failure here means abort
2193 */
2194 unused = I40E_DESC_UNUSED(&rx_rings[i]);
2195 err = i40e_alloc_rx_buffers(rxr: &rx_rings[i], cleaned_count: unused);
2196rx_unwind:
2197 if (err) {
2198 do {
2199 i40e_free_rx_resources(rx_ring: &rx_rings[i]);
2200 } while (i--);
2201 kfree(objp: rx_rings);
2202 rx_rings = NULL;
2203
2204 goto free_tx;
2205 }
2206 }
2207 }
2208
2209 /* Bring interface down, copy in the new ring info,
2210 * then restore the interface
2211 */
2212 i40e_down(vsi);
2213
2214 if (tx_rings) {
2215 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2216 if (i40e_active_tx_ring_index(vsi, index: i)) {
2217 i40e_free_tx_resources(tx_ring: vsi->tx_rings[i]);
2218 *vsi->tx_rings[i] = tx_rings[i];
2219 }
2220 }
2221 kfree(objp: tx_rings);
2222 tx_rings = NULL;
2223 }
2224
2225 if (rx_rings) {
2226 for (i = 0; i < vsi->num_queue_pairs; i++) {
2227 i40e_free_rx_resources(rx_ring: vsi->rx_rings[i]);
2228 /* get the real tail offset */
2229 rx_rings[i].tail = vsi->rx_rings[i]->tail;
2230 /* this is to fake out the allocation routine
2231 * into thinking it has to realloc everything
2232 * but the recycling logic will let us re-use
2233 * the buffers allocated above
2234 */
2235 rx_rings[i].next_to_use = 0;
2236 rx_rings[i].next_to_clean = 0;
2237 rx_rings[i].next_to_alloc = 0;
2238 /* do a struct copy */
2239 *vsi->rx_rings[i] = rx_rings[i];
2240 }
2241 kfree(objp: rx_rings);
2242 rx_rings = NULL;
2243 }
2244
2245 vsi->num_tx_desc = new_tx_count;
2246 vsi->num_rx_desc = new_rx_count;
2247 i40e_up(vsi);
2248
2249free_tx:
2250 /* error cleanup if the Rx allocations failed after getting Tx */
2251 if (tx_rings) {
2252 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2253 if (i40e_active_tx_ring_index(vsi, index: i))
2254 i40e_free_tx_resources(tx_ring: vsi->tx_rings[i]);
2255 }
2256 kfree(objp: tx_rings);
2257 tx_rings = NULL;
2258 }
2259
2260done:
2261 clear_bit(nr: __I40E_CONFIG_BUSY, addr: pf->state);
2262
2263 return err;
2264}
2265
2266/**
2267 * i40e_get_stats_count - return the stats count for a device
2268 * @netdev: the netdev to return the count for
2269 *
2270 * Returns the total number of statistics for this netdev. Note that even
2271 * though this is a function, it is required that the count for a specific
2272 * netdev must never change. Basing the count on static values such as the
2273 * maximum number of queues or the device type is ok. However, the API for
2274 * obtaining stats is *not* safe against changes based on non-static
2275 * values such as the *current* number of queues, or runtime flags.
2276 *
2277 * If a statistic is not always enabled, return it as part of the count
2278 * anyways, always return its string, and report its value as zero.
2279 **/
2280static int i40e_get_stats_count(struct net_device *netdev)
2281{
2282 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2283 struct i40e_vsi *vsi = np->vsi;
2284 struct i40e_pf *pf = vsi->back;
2285 int stats_len;
2286
2287 if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1)
2288 stats_len = I40E_PF_STATS_LEN;
2289 else
2290 stats_len = I40E_VSI_STATS_LEN;
2291
2292 /* The number of stats reported for a given net_device must remain
2293 * constant throughout the life of that device.
2294 *
2295 * This is because the API for obtaining the size, strings, and stats
2296 * is spread out over three separate ethtool ioctls. There is no safe
2297 * way to lock the number of stats across these calls, so we must
2298 * assume that they will never change.
2299 *
2300 * Due to this, we report the maximum number of queues, even if not
2301 * every queue is currently configured. Since we always allocate
2302 * queues in pairs, we'll just use netdev->num_tx_queues * 2. This
2303 * works because the num_tx_queues is set at device creation and never
2304 * changes.
2305 */
2306 stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
2307
2308 return stats_len;
2309}
2310
2311static int i40e_get_sset_count(struct net_device *netdev, int sset)
2312{
2313 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2314 struct i40e_vsi *vsi = np->vsi;
2315 struct i40e_pf *pf = vsi->back;
2316
2317 switch (sset) {
2318 case ETH_SS_TEST:
2319 return I40E_TEST_LEN;
2320 case ETH_SS_STATS:
2321 return i40e_get_stats_count(netdev);
2322 case ETH_SS_PRIV_FLAGS:
2323 return I40E_PRIV_FLAGS_STR_LEN +
2324 (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
2325 default:
2326 return -EOPNOTSUPP;
2327 }
2328}
2329
2330/**
2331 * i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure
2332 * @tc: the TC statistics in VEB structure (veb->tc_stats)
2333 * @i: the index of traffic class in (veb->tc_stats) structure to copy
2334 *
2335 * Copy VEB TC statistics from structure of arrays (veb->tc_stats) to
2336 * one dimensional structure i40e_cp_veb_tc_stats.
2337 * Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC
2338 * statistics for the given TC.
2339 **/
2340static struct i40e_cp_veb_tc_stats
2341i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsigned int i)
2342{
2343 struct i40e_cp_veb_tc_stats veb_tc = {
2344 .tc_rx_packets = tc->tc_rx_packets[i],
2345 .tc_rx_bytes = tc->tc_rx_bytes[i],
2346 .tc_tx_packets = tc->tc_tx_packets[i],
2347 .tc_tx_bytes = tc->tc_tx_bytes[i],
2348 };
2349
2350 return veb_tc;
2351}
2352
2353/**
2354 * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
2355 * @pf: the PF device structure
2356 * @i: the priority value to copy
2357 *
2358 * The PFC stats are found as arrays in pf->stats, which is not easy to pass
2359 * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure
2360 * of the PFC stats for the given priority.
2361 **/
2362static inline struct i40e_pfc_stats
2363i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i)
2364{
2365#define I40E_GET_PFC_STAT(stat, priority) \
2366 .stat = pf->stats.stat[priority]
2367
2368 struct i40e_pfc_stats pfc = {
2369 I40E_GET_PFC_STAT(priority_xon_rx, i),
2370 I40E_GET_PFC_STAT(priority_xoff_rx, i),
2371 I40E_GET_PFC_STAT(priority_xon_tx, i),
2372 I40E_GET_PFC_STAT(priority_xoff_tx, i),
2373 I40E_GET_PFC_STAT(priority_xon_2_xoff, i),
2374 };
2375 return pfc;
2376}
2377
2378/**
2379 * i40e_get_ethtool_stats - copy stat values into supplied buffer
2380 * @netdev: the netdev to collect stats for
2381 * @stats: ethtool stats command structure
2382 * @data: ethtool supplied buffer
2383 *
2384 * Copy the stats values for this netdev into the buffer. Expects data to be
2385 * pre-allocated to the size returned by i40e_get_stats_count.. Note that all
2386 * statistics must be copied in a static order, and the count must not change
2387 * for a given netdev. See i40e_get_stats_count for more details.
2388 *
2389 * If a statistic is not currently valid (such as a disabled queue), this
2390 * function reports its value as zero.
2391 **/
2392static void i40e_get_ethtool_stats(struct net_device *netdev,
2393 struct ethtool_stats *stats, u64 *data)
2394{
2395 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2396 struct i40e_vsi *vsi = np->vsi;
2397 struct i40e_pf *pf = vsi->back;
2398 struct i40e_veb *veb = NULL;
2399 unsigned int i;
2400 bool veb_stats;
2401 u64 *p = data;
2402
2403 i40e_update_stats(vsi);
2404
2405 i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi),
2406 i40e_gstrings_net_stats);
2407
2408 i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats);
2409
2410 rcu_read_lock();
2411 for (i = 0; i < netdev->num_tx_queues; i++) {
2412 i40e_add_queue_stats(data: &data, READ_ONCE(vsi->tx_rings[i]));
2413 i40e_add_queue_stats(data: &data, READ_ONCE(vsi->rx_rings[i]));
2414 }
2415 rcu_read_unlock();
2416
2417 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2418 goto check_data_pointer;
2419
2420 veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
2421 (pf->lan_veb < I40E_MAX_VEB) &&
2422 (pf->flags & I40E_FLAG_VEB_STATS_ENABLED));
2423
2424 if (veb_stats) {
2425 veb = pf->veb[pf->lan_veb];
2426 i40e_update_veb_stats(veb);
2427 }
2428
2429 /* If veb stats aren't enabled, pass NULL instead of the veb so that
2430 * we initialize stats to zero and update the data pointer
2431 * intelligently
2432 */
2433 i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2434 i40e_gstrings_veb_stats);
2435
2436 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2437 if (veb_stats) {
2438 struct i40e_cp_veb_tc_stats veb_tc =
2439 i40e_get_veb_tc_stats(tc: &veb->tc_stats, i);
2440
2441 i40e_add_ethtool_stats(&data, &veb_tc,
2442 i40e_gstrings_veb_tc_stats);
2443 } else {
2444 i40e_add_ethtool_stats(&data, NULL,
2445 i40e_gstrings_veb_tc_stats);
2446 }
2447
2448 i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
2449
2450 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
2451 struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i);
2452
2453 i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats);
2454 }
2455
2456check_data_pointer:
2457 WARN_ONCE(data - p != i40e_get_stats_count(netdev),
2458 "ethtool stats count mismatch!");
2459}
2460
2461/**
2462 * i40e_get_stat_strings - copy stat strings into supplied buffer
2463 * @netdev: the netdev to collect strings for
2464 * @data: supplied buffer to copy strings into
2465 *
2466 * Copy the strings related to stats for this netdev. Expects data to be
2467 * pre-allocated with the size reported by i40e_get_stats_count. Note that the
2468 * strings must be copied in a static order and the total count must not
2469 * change for a given netdev. See i40e_get_stats_count for more details.
2470 **/
2471static void i40e_get_stat_strings(struct net_device *netdev, u8 *data)
2472{
2473 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2474 struct i40e_vsi *vsi = np->vsi;
2475 struct i40e_pf *pf = vsi->back;
2476 unsigned int i;
2477 u8 *p = data;
2478
2479 i40e_add_stat_strings(&data, i40e_gstrings_net_stats);
2480
2481 i40e_add_stat_strings(&data, i40e_gstrings_misc_stats);
2482
2483 for (i = 0; i < netdev->num_tx_queues; i++) {
2484 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2485 "tx", i);
2486 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2487 "rx", i);
2488 }
2489
2490 if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2491 goto check_data_pointer;
2492
2493 i40e_add_stat_strings(&data, i40e_gstrings_veb_stats);
2494
2495 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2496 i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i);
2497
2498 i40e_add_stat_strings(&data, i40e_gstrings_stats);
2499
2500 for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
2501 i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i);
2502
2503check_data_pointer:
2504 WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN,
2505 "stat strings count mismatch!");
2506}
2507
2508static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data)
2509{
2510 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2511 struct i40e_vsi *vsi = np->vsi;
2512 struct i40e_pf *pf = vsi->back;
2513 unsigned int i;
2514 u8 *p = data;
2515
2516 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++)
2517 ethtool_sprintf(data: &p, fmt: "%s",
2518 i40e_gstrings_priv_flags[i].flag_string);
2519 if (pf->hw.pf_id != 0)
2520 return;
2521 for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++)
2522 ethtool_sprintf(data: &p, fmt: "%s",
2523 i40e_gl_gstrings_priv_flags[i].flag_string);
2524}
2525
2526static void i40e_get_strings(struct net_device *netdev, u32 stringset,
2527 u8 *data)
2528{
2529 switch (stringset) {
2530 case ETH_SS_TEST:
2531 memcpy(data, i40e_gstrings_test,
2532 I40E_TEST_LEN * ETH_GSTRING_LEN);
2533 break;
2534 case ETH_SS_STATS:
2535 i40e_get_stat_strings(netdev, data);
2536 break;
2537 case ETH_SS_PRIV_FLAGS:
2538 i40e_get_priv_flag_strings(netdev, data);
2539 break;
2540 default:
2541 break;
2542 }
2543}
2544
2545static int i40e_get_ts_info(struct net_device *dev,
2546 struct ethtool_ts_info *info)
2547{
2548 struct i40e_pf *pf = i40e_netdev_to_pf(netdev: dev);
2549
2550 /* only report HW timestamping if PTP is enabled */
2551 if (!(pf->flags & I40E_FLAG_PTP))
2552 return ethtool_op_get_ts_info(dev, eti: info);
2553
2554 info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
2555 SOF_TIMESTAMPING_RX_SOFTWARE |
2556 SOF_TIMESTAMPING_SOFTWARE |
2557 SOF_TIMESTAMPING_TX_HARDWARE |
2558 SOF_TIMESTAMPING_RX_HARDWARE |
2559 SOF_TIMESTAMPING_RAW_HARDWARE;
2560
2561 if (pf->ptp_clock)
2562 info->phc_index = ptp_clock_index(ptp: pf->ptp_clock);
2563 else
2564 info->phc_index = -1;
2565
2566 info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2567
2568 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
2569 BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
2570 BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2571 BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
2572
2573 if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
2574 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2575 BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2576 BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2577 BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
2578 BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2579 BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2580 BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2581 BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
2582
2583 return 0;
2584}
2585
2586static u64 i40e_link_test(struct net_device *netdev, u64 *data)
2587{
2588 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2589 struct i40e_pf *pf = np->vsi->back;
2590 bool link_up = false;
2591 int status;
2592
2593 netif_info(pf, hw, netdev, "link test\n");
2594 status = i40e_get_link_status(hw: &pf->hw, link_up: &link_up);
2595 if (status) {
2596 netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
2597 *data = 1;
2598 return *data;
2599 }
2600
2601 if (link_up)
2602 *data = 0;
2603 else
2604 *data = 1;
2605
2606 return *data;
2607}
2608
2609static u64 i40e_reg_test(struct net_device *netdev, u64 *data)
2610{
2611 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2612 struct i40e_pf *pf = np->vsi->back;
2613
2614 netif_info(pf, hw, netdev, "register test\n");
2615 *data = i40e_diag_reg_test(hw: &pf->hw);
2616
2617 return *data;
2618}
2619
2620static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data)
2621{
2622 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2623 struct i40e_pf *pf = np->vsi->back;
2624
2625 netif_info(pf, hw, netdev, "eeprom test\n");
2626 *data = i40e_diag_eeprom_test(hw: &pf->hw);
2627
2628 /* forcebly clear the NVM Update state machine */
2629 pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
2630
2631 return *data;
2632}
2633
2634static u64 i40e_intr_test(struct net_device *netdev, u64 *data)
2635{
2636 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2637 struct i40e_pf *pf = np->vsi->back;
2638 u16 swc_old = pf->sw_int_count;
2639
2640 netif_info(pf, hw, netdev, "interrupt test\n");
2641 wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
2642 (I40E_PFINT_DYN_CTL0_INTENA_MASK |
2643 I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
2644 I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
2645 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
2646 I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
2647 usleep_range(min: 1000, max: 2000);
2648 *data = (swc_old == pf->sw_int_count);
2649
2650 return *data;
2651}
2652
2653static inline bool i40e_active_vfs(struct i40e_pf *pf)
2654{
2655 struct i40e_vf *vfs = pf->vf;
2656 int i;
2657
2658 for (i = 0; i < pf->num_alloc_vfs; i++)
2659 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
2660 return true;
2661 return false;
2662}
2663
2664static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
2665{
2666 return !!i40e_find_vsi_by_type(pf, type: I40E_VSI_VMDQ2);
2667}
2668
2669static void i40e_diag_test(struct net_device *netdev,
2670 struct ethtool_test *eth_test, u64 *data)
2671{
2672 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2673 bool if_running = netif_running(dev: netdev);
2674 struct i40e_pf *pf = np->vsi->back;
2675
2676 if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
2677 /* Offline tests */
2678 netif_info(pf, drv, netdev, "offline testing starting\n");
2679
2680 set_bit(nr: __I40E_TESTING, addr: pf->state);
2681
2682 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
2683 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
2684 dev_warn(&pf->pdev->dev,
2685 "Cannot start offline testing when PF is in reset state.\n");
2686 goto skip_ol_tests;
2687 }
2688
2689 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
2690 dev_warn(&pf->pdev->dev,
2691 "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
2692 goto skip_ol_tests;
2693 }
2694
2695 /* If the device is online then take it offline */
2696 if (if_running)
2697 /* indicate we're in test mode */
2698 i40e_close(netdev);
2699 else
2700 /* This reset does not affect link - if it is
2701 * changed to a type of reset that does affect
2702 * link then the following link test would have
2703 * to be moved to before the reset
2704 */
2705 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), lock_acquired: true);
2706
2707 if (i40e_link_test(netdev, data: &data[I40E_ETH_TEST_LINK]))
2708 eth_test->flags |= ETH_TEST_FL_FAILED;
2709
2710 if (i40e_eeprom_test(netdev, data: &data[I40E_ETH_TEST_EEPROM]))
2711 eth_test->flags |= ETH_TEST_FL_FAILED;
2712
2713 if (i40e_intr_test(netdev, data: &data[I40E_ETH_TEST_INTR]))
2714 eth_test->flags |= ETH_TEST_FL_FAILED;
2715
2716 /* run reg test last, a reset is required after it */
2717 if (i40e_reg_test(netdev, data: &data[I40E_ETH_TEST_REG]))
2718 eth_test->flags |= ETH_TEST_FL_FAILED;
2719
2720 clear_bit(nr: __I40E_TESTING, addr: pf->state);
2721 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), lock_acquired: true);
2722
2723 if (if_running)
2724 i40e_open(netdev);
2725 } else {
2726 /* Online tests */
2727 netif_info(pf, drv, netdev, "online testing starting\n");
2728
2729 if (i40e_link_test(netdev, data: &data[I40E_ETH_TEST_LINK]))
2730 eth_test->flags |= ETH_TEST_FL_FAILED;
2731
2732 /* Offline only tests, not run in online; pass by default */
2733 data[I40E_ETH_TEST_REG] = 0;
2734 data[I40E_ETH_TEST_EEPROM] = 0;
2735 data[I40E_ETH_TEST_INTR] = 0;
2736 }
2737
2738 netif_info(pf, drv, netdev, "testing finished\n");
2739 return;
2740
2741skip_ol_tests:
2742 data[I40E_ETH_TEST_REG] = 1;
2743 data[I40E_ETH_TEST_EEPROM] = 1;
2744 data[I40E_ETH_TEST_INTR] = 1;
2745 data[I40E_ETH_TEST_LINK] = 1;
2746 eth_test->flags |= ETH_TEST_FL_FAILED;
2747 clear_bit(nr: __I40E_TESTING, addr: pf->state);
2748 netif_info(pf, drv, netdev, "testing failed\n");
2749}
2750
2751static void i40e_get_wol(struct net_device *netdev,
2752 struct ethtool_wolinfo *wol)
2753{
2754 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2755 struct i40e_pf *pf = np->vsi->back;
2756 struct i40e_hw *hw = &pf->hw;
2757 u16 wol_nvm_bits;
2758
2759 /* NVM bit on means WoL disabled for the port */
2760 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, data: &wol_nvm_bits);
2761 if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
2762 wol->supported = 0;
2763 wol->wolopts = 0;
2764 } else {
2765 wol->supported = WAKE_MAGIC;
2766 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
2767 }
2768}
2769
2770/**
2771 * i40e_set_wol - set the WakeOnLAN configuration
2772 * @netdev: the netdev in question
2773 * @wol: the ethtool WoL setting data
2774 **/
2775static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2776{
2777 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2778 struct i40e_pf *pf = np->vsi->back;
2779 struct i40e_vsi *vsi = np->vsi;
2780 struct i40e_hw *hw = &pf->hw;
2781 u16 wol_nvm_bits;
2782
2783 /* WoL not supported if this isn't the controlling PF on the port */
2784 if (hw->partition_id != 1) {
2785 i40e_partition_setting_complaint(pf);
2786 return -EOPNOTSUPP;
2787 }
2788
2789 if (vsi != pf->vsi[pf->lan_vsi])
2790 return -EOPNOTSUPP;
2791
2792 /* NVM bit on means WoL disabled for the port */
2793 i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, data: &wol_nvm_bits);
2794 if (BIT(hw->port) & wol_nvm_bits)
2795 return -EOPNOTSUPP;
2796
2797 /* only magic packet is supported */
2798 if (wol->wolopts & ~WAKE_MAGIC)
2799 return -EOPNOTSUPP;
2800
2801 /* is this a new value? */
2802 if (pf->wol_en != !!wol->wolopts) {
2803 pf->wol_en = !!wol->wolopts;
2804 device_set_wakeup_enable(dev: &pf->pdev->dev, enable: pf->wol_en);
2805 }
2806
2807 return 0;
2808}
2809
2810static int i40e_set_phys_id(struct net_device *netdev,
2811 enum ethtool_phys_id_state state)
2812{
2813 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2814 struct i40e_pf *pf = np->vsi->back;
2815 struct i40e_hw *hw = &pf->hw;
2816 int blink_freq = 2;
2817 u16 temp_status;
2818 int ret = 0;
2819
2820 switch (state) {
2821 case ETHTOOL_ID_ACTIVE:
2822 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2823 pf->led_status = i40e_led_get(hw);
2824 } else {
2825 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2826 i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
2827 NULL);
2828 ret = i40e_led_get_phy(hw, led_addr: &temp_status,
2829 val: &pf->phy_led_val);
2830 pf->led_status = temp_status;
2831 }
2832 return blink_freq;
2833 case ETHTOOL_ID_ON:
2834 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2835 i40e_led_set(hw, mode: 0xf, blink: false);
2836 else
2837 ret = i40e_led_set_phy(hw, on: true, led_addr: pf->led_status, mode: 0);
2838 break;
2839 case ETHTOOL_ID_OFF:
2840 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2841 i40e_led_set(hw, mode: 0x0, blink: false);
2842 else
2843 ret = i40e_led_set_phy(hw, on: false, led_addr: pf->led_status, mode: 0);
2844 break;
2845 case ETHTOOL_ID_INACTIVE:
2846 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2847 i40e_led_set(hw, mode: pf->led_status, blink: false);
2848 } else {
2849 ret = i40e_led_set_phy(hw, on: false, led_addr: pf->led_status,
2850 mode: (pf->phy_led_val |
2851 I40E_PHY_LED_MODE_ORIG));
2852 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2853 i40e_aq_set_phy_debug(hw, cmd_flags: 0, NULL);
2854 }
2855 break;
2856 default:
2857 break;
2858 }
2859 if (ret)
2860 return -ENOENT;
2861 else
2862 return 0;
2863}
2864
2865/* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
2866 * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
2867 * 125us (8000 interrupts per second) == ITR(62)
2868 */
2869
2870/**
2871 * __i40e_get_coalesce - get per-queue coalesce settings
2872 * @netdev: the netdev to check
2873 * @ec: ethtool coalesce data structure
2874 * @queue: which queue to pick
2875 *
2876 * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
2877 * are per queue. If queue is <0 then we default to queue 0 as the
2878 * representative value.
2879 **/
2880static int __i40e_get_coalesce(struct net_device *netdev,
2881 struct ethtool_coalesce *ec,
2882 int queue)
2883{
2884 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
2885 struct i40e_ring *rx_ring, *tx_ring;
2886 struct i40e_vsi *vsi = np->vsi;
2887
2888 ec->tx_max_coalesced_frames_irq = vsi->work_limit;
2889 ec->rx_max_coalesced_frames_irq = vsi->work_limit;
2890
2891 /* rx and tx usecs has per queue value. If user doesn't specify the
2892 * queue, return queue 0's value to represent.
2893 */
2894 if (queue < 0)
2895 queue = 0;
2896 else if (queue >= vsi->num_queue_pairs)
2897 return -EINVAL;
2898
2899 rx_ring = vsi->rx_rings[queue];
2900 tx_ring = vsi->tx_rings[queue];
2901
2902 if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
2903 ec->use_adaptive_rx_coalesce = 1;
2904
2905 if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
2906 ec->use_adaptive_tx_coalesce = 1;
2907
2908 ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2909 ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2910
2911 /* we use the _usecs_high to store/set the interrupt rate limit
2912 * that the hardware supports, that almost but not quite
2913 * fits the original intent of the ethtool variable,
2914 * the rx_coalesce_usecs_high limits total interrupts
2915 * per second from both tx/rx sources.
2916 */
2917 ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
2918 ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
2919
2920 return 0;
2921}
2922
2923/**
2924 * i40e_get_coalesce - get a netdev's coalesce settings
2925 * @netdev: the netdev to check
2926 * @ec: ethtool coalesce data structure
2927 * @kernel_coal: ethtool CQE mode setting structure
2928 * @extack: extack for reporting error messages
2929 *
2930 * Gets the coalesce settings for a particular netdev. Note that if user has
2931 * modified per-queue settings, this only guarantees to represent queue 0. See
2932 * __i40e_get_coalesce for more details.
2933 **/
2934static int i40e_get_coalesce(struct net_device *netdev,
2935 struct ethtool_coalesce *ec,
2936 struct kernel_ethtool_coalesce *kernel_coal,
2937 struct netlink_ext_ack *extack)
2938{
2939 return __i40e_get_coalesce(netdev, ec, queue: -1);
2940}
2941
2942/**
2943 * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
2944 * @netdev: netdev structure
2945 * @ec: ethtool's coalesce settings
2946 * @queue: the particular queue to read
2947 *
2948 * Will read a specific queue's coalesce settings
2949 **/
2950static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
2951 struct ethtool_coalesce *ec)
2952{
2953 return __i40e_get_coalesce(netdev, ec, queue);
2954}
2955
2956/**
2957 * i40e_set_itr_per_queue - set ITR values for specific queue
2958 * @vsi: the VSI to set values for
2959 * @ec: coalesce settings from ethtool
2960 * @queue: the queue to modify
2961 *
2962 * Change the ITR settings for a specific queue.
2963 **/
2964static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
2965 struct ethtool_coalesce *ec,
2966 int queue)
2967{
2968 struct i40e_ring *rx_ring = vsi->rx_rings[queue];
2969 struct i40e_ring *tx_ring = vsi->tx_rings[queue];
2970 struct i40e_pf *pf = vsi->back;
2971 struct i40e_hw *hw = &pf->hw;
2972 struct i40e_q_vector *q_vector;
2973 u16 intrl;
2974
2975 intrl = i40e_intrl_usec_to_reg(intrl: vsi->int_rate_limit);
2976
2977 rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
2978 tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
2979
2980 if (ec->use_adaptive_rx_coalesce)
2981 rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2982 else
2983 rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2984
2985 if (ec->use_adaptive_tx_coalesce)
2986 tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2987 else
2988 tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2989
2990 q_vector = rx_ring->q_vector;
2991 q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
2992
2993 q_vector = tx_ring->q_vector;
2994 q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
2995
2996 /* The interrupt handler itself will take care of programming
2997 * the Tx and Rx ITR values based on the values we have entered
2998 * into the q_vector, no need to write the values now.
2999 */
3000
3001 wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
3002 i40e_flush(hw);
3003}
3004
3005/**
3006 * __i40e_set_coalesce - set coalesce settings for particular queue
3007 * @netdev: the netdev to change
3008 * @ec: ethtool coalesce settings
3009 * @queue: the queue to change
3010 *
3011 * Sets the coalesce settings for a particular queue.
3012 **/
3013static int __i40e_set_coalesce(struct net_device *netdev,
3014 struct ethtool_coalesce *ec,
3015 int queue)
3016{
3017 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
3018 u16 intrl_reg, cur_rx_itr, cur_tx_itr;
3019 struct i40e_vsi *vsi = np->vsi;
3020 struct i40e_pf *pf = vsi->back;
3021 int i;
3022
3023 if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
3024 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
3025
3026 if (queue < 0) {
3027 cur_rx_itr = vsi->rx_rings[0]->itr_setting;
3028 cur_tx_itr = vsi->tx_rings[0]->itr_setting;
3029 } else if (queue < vsi->num_queue_pairs) {
3030 cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
3031 cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
3032 } else {
3033 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
3034 vsi->num_queue_pairs - 1);
3035 return -EINVAL;
3036 }
3037
3038 cur_tx_itr &= ~I40E_ITR_DYNAMIC;
3039 cur_rx_itr &= ~I40E_ITR_DYNAMIC;
3040
3041 /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
3042 if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
3043 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
3044 return -EINVAL;
3045 }
3046
3047 if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
3048 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
3049 INTRL_REG_TO_USEC(I40E_MAX_INTRL));
3050 return -EINVAL;
3051 }
3052
3053 if (ec->rx_coalesce_usecs != cur_rx_itr &&
3054 ec->use_adaptive_rx_coalesce) {
3055 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
3056 return -EINVAL;
3057 }
3058
3059 if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
3060 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
3061 return -EINVAL;
3062 }
3063
3064 if (ec->tx_coalesce_usecs != cur_tx_itr &&
3065 ec->use_adaptive_tx_coalesce) {
3066 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
3067 return -EINVAL;
3068 }
3069
3070 if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
3071 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
3072 return -EINVAL;
3073 }
3074
3075 if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
3076 ec->rx_coalesce_usecs = I40E_MIN_ITR;
3077
3078 if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
3079 ec->tx_coalesce_usecs = I40E_MIN_ITR;
3080
3081 intrl_reg = i40e_intrl_usec_to_reg(intrl: ec->rx_coalesce_usecs_high);
3082 vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
3083 if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
3084 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
3085 vsi->int_rate_limit);
3086 }
3087
3088 /* rx and tx usecs has per queue value. If user doesn't specify the
3089 * queue, apply to all queues.
3090 */
3091 if (queue < 0) {
3092 for (i = 0; i < vsi->num_queue_pairs; i++)
3093 i40e_set_itr_per_queue(vsi, ec, queue: i);
3094 } else {
3095 i40e_set_itr_per_queue(vsi, ec, queue);
3096 }
3097
3098 return 0;
3099}
3100
3101/**
3102 * i40e_set_coalesce - set coalesce settings for every queue on the netdev
3103 * @netdev: the netdev to change
3104 * @ec: ethtool coalesce settings
3105 * @kernel_coal: ethtool CQE mode setting structure
3106 * @extack: extack for reporting error messages
3107 *
3108 * This will set each queue to the same coalesce settings.
3109 **/
3110static int i40e_set_coalesce(struct net_device *netdev,
3111 struct ethtool_coalesce *ec,
3112 struct kernel_ethtool_coalesce *kernel_coal,
3113 struct netlink_ext_ack *extack)
3114{
3115 return __i40e_set_coalesce(netdev, ec, queue: -1);
3116}
3117
3118/**
3119 * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
3120 * @netdev: the netdev to change
3121 * @ec: ethtool's coalesce settings
3122 * @queue: the queue to change
3123 *
3124 * Sets the specified queue's coalesce settings.
3125 **/
3126static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
3127 struct ethtool_coalesce *ec)
3128{
3129 return __i40e_set_coalesce(netdev, ec, queue);
3130}
3131
3132/**
3133 * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
3134 * @pf: pointer to the physical function struct
3135 * @cmd: ethtool rxnfc command
3136 *
3137 * Returns Success if the flow is supported, else Invalid Input.
3138 **/
3139static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
3140{
3141 struct i40e_hw *hw = &pf->hw;
3142 u8 flow_pctype = 0;
3143 u64 i_set = 0;
3144
3145 cmd->data = 0;
3146
3147 switch (cmd->flow_type) {
3148 case TCP_V4_FLOW:
3149 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3150 break;
3151 case UDP_V4_FLOW:
3152 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3153 break;
3154 case TCP_V6_FLOW:
3155 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3156 break;
3157 case UDP_V6_FLOW:
3158 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3159 break;
3160 case SCTP_V4_FLOW:
3161 case AH_ESP_V4_FLOW:
3162 case AH_V4_FLOW:
3163 case ESP_V4_FLOW:
3164 case IPV4_FLOW:
3165 case SCTP_V6_FLOW:
3166 case AH_ESP_V6_FLOW:
3167 case AH_V6_FLOW:
3168 case ESP_V6_FLOW:
3169 case IPV6_FLOW:
3170 /* Default is src/dest for IP, no matter the L4 hashing */
3171 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
3172 break;
3173 default:
3174 return -EINVAL;
3175 }
3176
3177 /* Read flow based hash input set register */
3178 if (flow_pctype) {
3179 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3180 flow_pctype)) |
3181 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3182 flow_pctype)) << 32);
3183 }
3184
3185 /* Process bits of hash input set */
3186 if (i_set) {
3187 if (i_set & I40E_L4_SRC_MASK)
3188 cmd->data |= RXH_L4_B_0_1;
3189 if (i_set & I40E_L4_DST_MASK)
3190 cmd->data |= RXH_L4_B_2_3;
3191
3192 if (cmd->flow_type == TCP_V4_FLOW ||
3193 cmd->flow_type == UDP_V4_FLOW) {
3194 if (hw->mac.type == I40E_MAC_X722) {
3195 if (i_set & I40E_X722_L3_SRC_MASK)
3196 cmd->data |= RXH_IP_SRC;
3197 if (i_set & I40E_X722_L3_DST_MASK)
3198 cmd->data |= RXH_IP_DST;
3199 } else {
3200 if (i_set & I40E_L3_SRC_MASK)
3201 cmd->data |= RXH_IP_SRC;
3202 if (i_set & I40E_L3_DST_MASK)
3203 cmd->data |= RXH_IP_DST;
3204 }
3205 } else if (cmd->flow_type == TCP_V6_FLOW ||
3206 cmd->flow_type == UDP_V6_FLOW) {
3207 if (i_set & I40E_L3_V6_SRC_MASK)
3208 cmd->data |= RXH_IP_SRC;
3209 if (i_set & I40E_L3_V6_DST_MASK)
3210 cmd->data |= RXH_IP_DST;
3211 }
3212 }
3213
3214 return 0;
3215}
3216
3217/**
3218 * i40e_check_mask - Check whether a mask field is set
3219 * @mask: the full mask value
3220 * @field: mask of the field to check
3221 *
3222 * If the given mask is fully set, return positive value. If the mask for the
3223 * field is fully unset, return zero. Otherwise return a negative error code.
3224 **/
3225static int i40e_check_mask(u64 mask, u64 field)
3226{
3227 u64 value = mask & field;
3228
3229 if (value == field)
3230 return 1;
3231 else if (!value)
3232 return 0;
3233 else
3234 return -1;
3235}
3236
3237/**
3238 * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
3239 * @fsp: pointer to rx flow specification
3240 * @data: pointer to userdef data structure for storage
3241 *
3242 * Read the user-defined data and deconstruct the value into a structure. No
3243 * other code should read the user-defined data, so as to ensure that every
3244 * place consistently reads the value correctly.
3245 *
3246 * The user-defined field is a 64bit Big Endian format value, which we
3247 * deconstruct by reading bits or bit fields from it. Single bit flags shall
3248 * be defined starting from the highest bits, while small bit field values
3249 * shall be defined starting from the lowest bits.
3250 *
3251 * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
3252 * and the filter should be rejected. The data structure will always be
3253 * modified even if FLOW_EXT is not set.
3254 *
3255 **/
3256static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3257 struct i40e_rx_flow_userdef *data)
3258{
3259 u64 value, mask;
3260 int valid;
3261
3262 /* Zero memory first so it's always consistent. */
3263 memset(data, 0, sizeof(*data));
3264
3265 if (!(fsp->flow_type & FLOW_EXT))
3266 return 0;
3267
3268 value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
3269 mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
3270
3271#define I40E_USERDEF_FLEX_WORD GENMASK_ULL(15, 0)
3272#define I40E_USERDEF_FLEX_OFFSET GENMASK_ULL(31, 16)
3273#define I40E_USERDEF_FLEX_FILTER GENMASK_ULL(31, 0)
3274
3275 valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
3276 if (valid < 0) {
3277 return -EINVAL;
3278 } else if (valid) {
3279 data->flex_word = value & I40E_USERDEF_FLEX_WORD;
3280 data->flex_offset =
3281 (value & I40E_USERDEF_FLEX_OFFSET) >> 16;
3282 data->flex_filter = true;
3283 }
3284
3285 return 0;
3286}
3287
3288/**
3289 * i40e_fill_rx_flow_user_data - Fill in user-defined data field
3290 * @fsp: pointer to rx_flow specification
3291 * @data: pointer to return userdef data
3292 *
3293 * Reads the userdef data structure and properly fills in the user defined
3294 * fields of the rx_flow_spec.
3295 **/
3296static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3297 struct i40e_rx_flow_userdef *data)
3298{
3299 u64 value = 0, mask = 0;
3300
3301 if (data->flex_filter) {
3302 value |= data->flex_word;
3303 value |= (u64)data->flex_offset << 16;
3304 mask |= I40E_USERDEF_FLEX_FILTER;
3305 }
3306
3307 if (value || mask)
3308 fsp->flow_type |= FLOW_EXT;
3309
3310 *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
3311 *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
3312}
3313
3314/**
3315 * i40e_get_ethtool_fdir_all - Populates the rule count of a command
3316 * @pf: Pointer to the physical function struct
3317 * @cmd: The command to get or set Rx flow classification rules
3318 * @rule_locs: Array of used rule locations
3319 *
3320 * This function populates both the total and actual rule count of
3321 * the ethtool flow classification command
3322 *
3323 * Returns 0 on success or -EMSGSIZE if entry not found
3324 **/
3325static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
3326 struct ethtool_rxnfc *cmd,
3327 u32 *rule_locs)
3328{
3329 struct i40e_fdir_filter *rule;
3330 struct hlist_node *node2;
3331 int cnt = 0;
3332
3333 /* report total rule count */
3334 cmd->data = i40e_get_fd_cnt_all(pf);
3335
3336 hlist_for_each_entry_safe(rule, node2,
3337 &pf->fdir_filter_list, fdir_node) {
3338 if (cnt == cmd->rule_cnt)
3339 return -EMSGSIZE;
3340
3341 rule_locs[cnt] = rule->fd_id;
3342 cnt++;
3343 }
3344
3345 cmd->rule_cnt = cnt;
3346
3347 return 0;
3348}
3349
3350/**
3351 * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
3352 * @pf: Pointer to the physical function struct
3353 * @cmd: The command to get or set Rx flow classification rules
3354 *
3355 * This function looks up a filter based on the Rx flow classification
3356 * command and fills the flow spec info for it if found
3357 *
3358 * Returns 0 on success or -EINVAL if filter not found
3359 **/
3360static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
3361 struct ethtool_rxnfc *cmd)
3362{
3363 struct ethtool_rx_flow_spec *fsp =
3364 (struct ethtool_rx_flow_spec *)&cmd->fs;
3365 struct i40e_rx_flow_userdef userdef = {0};
3366 struct i40e_fdir_filter *rule = NULL;
3367 struct hlist_node *node2;
3368 u64 input_set;
3369 u16 index;
3370
3371 hlist_for_each_entry_safe(rule, node2,
3372 &pf->fdir_filter_list, fdir_node) {
3373 if (fsp->location <= rule->fd_id)
3374 break;
3375 }
3376
3377 if (!rule || fsp->location != rule->fd_id)
3378 return -EINVAL;
3379
3380 fsp->flow_type = rule->flow_type;
3381 if (fsp->flow_type == IP_USER_FLOW) {
3382 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
3383 fsp->h_u.usr_ip4_spec.proto = 0;
3384 fsp->m_u.usr_ip4_spec.proto = 0;
3385 }
3386
3387 if (fsp->flow_type == IPV6_USER_FLOW ||
3388 fsp->flow_type == UDP_V6_FLOW ||
3389 fsp->flow_type == TCP_V6_FLOW ||
3390 fsp->flow_type == SCTP_V6_FLOW) {
3391 /* Reverse the src and dest notion, since the HW views them
3392 * from Tx perspective where as the user expects it from
3393 * Rx filter view.
3394 */
3395 fsp->h_u.tcp_ip6_spec.psrc = rule->dst_port;
3396 fsp->h_u.tcp_ip6_spec.pdst = rule->src_port;
3397 memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->src_ip6,
3398 sizeof(__be32) * 4);
3399 memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->dst_ip6,
3400 sizeof(__be32) * 4);
3401 } else {
3402 /* Reverse the src and dest notion, since the HW views them
3403 * from Tx perspective where as the user expects it from
3404 * Rx filter view.
3405 */
3406 fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
3407 fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
3408 fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
3409 fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
3410 }
3411
3412 switch (rule->flow_type) {
3413 case SCTP_V4_FLOW:
3414 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
3415 break;
3416 case TCP_V4_FLOW:
3417 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3418 break;
3419 case UDP_V4_FLOW:
3420 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3421 break;
3422 case SCTP_V6_FLOW:
3423 index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
3424 break;
3425 case TCP_V6_FLOW:
3426 index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3427 break;
3428 case UDP_V6_FLOW:
3429 index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3430 break;
3431 case IP_USER_FLOW:
3432 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3433 break;
3434 case IPV6_USER_FLOW:
3435 index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
3436 break;
3437 default:
3438 /* If we have stored a filter with a flow type not listed here
3439 * it is almost certainly a driver bug. WARN(), and then
3440 * assign the input_set as if all fields are enabled to avoid
3441 * reading unassigned memory.
3442 */
3443 WARN(1, "Missing input set index for flow_type %d\n",
3444 rule->flow_type);
3445 input_set = 0xFFFFFFFFFFFFFFFFULL;
3446 goto no_input_set;
3447 }
3448
3449 input_set = i40e_read_fd_input_set(pf, addr: index);
3450
3451no_input_set:
3452 if (input_set & I40E_L3_V6_SRC_MASK) {
3453 fsp->m_u.tcp_ip6_spec.ip6src[0] = htonl(0xFFFFFFFF);
3454 fsp->m_u.tcp_ip6_spec.ip6src[1] = htonl(0xFFFFFFFF);
3455 fsp->m_u.tcp_ip6_spec.ip6src[2] = htonl(0xFFFFFFFF);
3456 fsp->m_u.tcp_ip6_spec.ip6src[3] = htonl(0xFFFFFFFF);
3457 }
3458
3459 if (input_set & I40E_L3_V6_DST_MASK) {
3460 fsp->m_u.tcp_ip6_spec.ip6dst[0] = htonl(0xFFFFFFFF);
3461 fsp->m_u.tcp_ip6_spec.ip6dst[1] = htonl(0xFFFFFFFF);
3462 fsp->m_u.tcp_ip6_spec.ip6dst[2] = htonl(0xFFFFFFFF);
3463 fsp->m_u.tcp_ip6_spec.ip6dst[3] = htonl(0xFFFFFFFF);
3464 }
3465
3466 if (input_set & I40E_L3_SRC_MASK)
3467 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
3468
3469 if (input_set & I40E_L3_DST_MASK)
3470 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
3471
3472 if (input_set & I40E_L4_SRC_MASK)
3473 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
3474
3475 if (input_set & I40E_L4_DST_MASK)
3476 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
3477
3478 if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
3479 fsp->ring_cookie = RX_CLS_FLOW_DISC;
3480 else
3481 fsp->ring_cookie = rule->q_index;
3482
3483 if (rule->vlan_tag) {
3484 fsp->h_ext.vlan_etype = rule->vlan_etype;
3485 fsp->m_ext.vlan_etype = htons(0xFFFF);
3486 fsp->h_ext.vlan_tci = rule->vlan_tag;
3487 fsp->m_ext.vlan_tci = htons(0xFFFF);
3488 fsp->flow_type |= FLOW_EXT;
3489 }
3490
3491 if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
3492 struct i40e_vsi *vsi;
3493
3494 vsi = i40e_find_vsi_from_id(pf, id: rule->dest_vsi);
3495 if (vsi && vsi->type == I40E_VSI_SRIOV) {
3496 /* VFs are zero-indexed by the driver, but ethtool
3497 * expects them to be one-indexed, so add one here
3498 */
3499 u64 ring_vf = vsi->vf_id + 1;
3500
3501 ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
3502 fsp->ring_cookie |= ring_vf;
3503 }
3504 }
3505
3506 if (rule->flex_filter) {
3507 userdef.flex_filter = true;
3508 userdef.flex_word = be16_to_cpu(rule->flex_word);
3509 userdef.flex_offset = rule->flex_offset;
3510 }
3511
3512 i40e_fill_rx_flow_user_data(fsp, data: &userdef);
3513
3514 return 0;
3515}
3516
3517/**
3518 * i40e_get_rxnfc - command to get RX flow classification rules
3519 * @netdev: network interface device structure
3520 * @cmd: ethtool rxnfc command
3521 * @rule_locs: pointer to store rule data
3522 *
3523 * Returns Success if the command is supported.
3524 **/
3525static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
3526 u32 *rule_locs)
3527{
3528 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
3529 struct i40e_vsi *vsi = np->vsi;
3530 struct i40e_pf *pf = vsi->back;
3531 int ret = -EOPNOTSUPP;
3532
3533 switch (cmd->cmd) {
3534 case ETHTOOL_GRXRINGS:
3535 cmd->data = vsi->rss_size;
3536 ret = 0;
3537 break;
3538 case ETHTOOL_GRXFH:
3539 ret = i40e_get_rss_hash_opts(pf, cmd);
3540 break;
3541 case ETHTOOL_GRXCLSRLCNT:
3542 cmd->rule_cnt = pf->fdir_pf_active_filters;
3543 /* report total rule count */
3544 cmd->data = i40e_get_fd_cnt_all(pf);
3545 ret = 0;
3546 break;
3547 case ETHTOOL_GRXCLSRULE:
3548 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
3549 break;
3550 case ETHTOOL_GRXCLSRLALL:
3551 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
3552 break;
3553 default:
3554 break;
3555 }
3556
3557 return ret;
3558}
3559
3560/**
3561 * i40e_get_rss_hash_bits - Read RSS Hash bits from register
3562 * @hw: hw structure
3563 * @nfc: pointer to user request
3564 * @i_setc: bits currently set
3565 *
3566 * Returns value of bits to be set per user request
3567 **/
3568static u64 i40e_get_rss_hash_bits(struct i40e_hw *hw,
3569 struct ethtool_rxnfc *nfc,
3570 u64 i_setc)
3571{
3572 u64 i_set = i_setc;
3573 u64 src_l3 = 0, dst_l3 = 0;
3574
3575 if (nfc->data & RXH_L4_B_0_1)
3576 i_set |= I40E_L4_SRC_MASK;
3577 else
3578 i_set &= ~I40E_L4_SRC_MASK;
3579 if (nfc->data & RXH_L4_B_2_3)
3580 i_set |= I40E_L4_DST_MASK;
3581 else
3582 i_set &= ~I40E_L4_DST_MASK;
3583
3584 if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
3585 src_l3 = I40E_L3_V6_SRC_MASK;
3586 dst_l3 = I40E_L3_V6_DST_MASK;
3587 } else if (nfc->flow_type == TCP_V4_FLOW ||
3588 nfc->flow_type == UDP_V4_FLOW) {
3589 if (hw->mac.type == I40E_MAC_X722) {
3590 src_l3 = I40E_X722_L3_SRC_MASK;
3591 dst_l3 = I40E_X722_L3_DST_MASK;
3592 } else {
3593 src_l3 = I40E_L3_SRC_MASK;
3594 dst_l3 = I40E_L3_DST_MASK;
3595 }
3596 } else {
3597 /* Any other flow type are not supported here */
3598 return i_set;
3599 }
3600
3601 if (nfc->data & RXH_IP_SRC)
3602 i_set |= src_l3;
3603 else
3604 i_set &= ~src_l3;
3605 if (nfc->data & RXH_IP_DST)
3606 i_set |= dst_l3;
3607 else
3608 i_set &= ~dst_l3;
3609
3610 return i_set;
3611}
3612
3613#define FLOW_PCTYPES_SIZE 64
3614/**
3615 * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
3616 * @pf: pointer to the physical function struct
3617 * @nfc: ethtool rxnfc command
3618 *
3619 * Returns Success if the flow input set is supported.
3620 **/
3621static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
3622{
3623 struct i40e_hw *hw = &pf->hw;
3624 u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
3625 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
3626 DECLARE_BITMAP(flow_pctypes, FLOW_PCTYPES_SIZE);
3627 u64 i_set, i_setc;
3628
3629 bitmap_zero(dst: flow_pctypes, FLOW_PCTYPES_SIZE);
3630
3631 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3632 dev_err(&pf->pdev->dev,
3633 "Change of RSS hash input set is not supported when MFP mode is enabled\n");
3634 return -EOPNOTSUPP;
3635 }
3636
3637 /* RSS does not support anything other than hashing
3638 * to queues on src and dst IPs and ports
3639 */
3640 if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
3641 RXH_L4_B_0_1 | RXH_L4_B_2_3))
3642 return -EINVAL;
3643
3644 switch (nfc->flow_type) {
3645 case TCP_V4_FLOW:
3646 set_bit(nr: I40E_FILTER_PCTYPE_NONF_IPV4_TCP, addr: flow_pctypes);
3647 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3648 set_bit(nr: I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK,
3649 addr: flow_pctypes);
3650 break;
3651 case TCP_V6_FLOW:
3652 set_bit(nr: I40E_FILTER_PCTYPE_NONF_IPV6_TCP, addr: flow_pctypes);
3653 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3654 set_bit(nr: I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK,
3655 addr: flow_pctypes);
3656 break;
3657 case UDP_V4_FLOW:
3658 set_bit(nr: I40E_FILTER_PCTYPE_NONF_IPV4_UDP, addr: flow_pctypes);
3659 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
3660 set_bit(nr: I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP,
3661 addr: flow_pctypes);
3662 set_bit(nr: I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP,
3663 addr: flow_pctypes);
3664 }
3665 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3666 break;
3667 case UDP_V6_FLOW:
3668 set_bit(nr: I40E_FILTER_PCTYPE_NONF_IPV6_UDP, addr: flow_pctypes);
3669 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
3670 set_bit(nr: I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP,
3671 addr: flow_pctypes);
3672 set_bit(nr: I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP,
3673 addr: flow_pctypes);
3674 }
3675 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3676 break;
3677 case AH_ESP_V4_FLOW:
3678 case AH_V4_FLOW:
3679 case ESP_V4_FLOW:
3680 case SCTP_V4_FLOW:
3681 if ((nfc->data & RXH_L4_B_0_1) ||
3682 (nfc->data & RXH_L4_B_2_3))
3683 return -EINVAL;
3684 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
3685 break;
3686 case AH_ESP_V6_FLOW:
3687 case AH_V6_FLOW:
3688 case ESP_V6_FLOW:
3689 case SCTP_V6_FLOW:
3690 if ((nfc->data & RXH_L4_B_0_1) ||
3691 (nfc->data & RXH_L4_B_2_3))
3692 return -EINVAL;
3693 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
3694 break;
3695 case IPV4_FLOW:
3696 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
3697 BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3698 break;
3699 case IPV6_FLOW:
3700 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
3701 BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3702 break;
3703 default:
3704 return -EINVAL;
3705 }
3706
3707 if (bitmap_weight(src: flow_pctypes, FLOW_PCTYPES_SIZE)) {
3708 u8 flow_id;
3709
3710 for_each_set_bit(flow_id, flow_pctypes, FLOW_PCTYPES_SIZE) {
3711 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_id)) |
3712 ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_id)) << 32);
3713 i_set = i40e_get_rss_hash_bits(hw: &pf->hw, nfc, i_setc);
3714
3715 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_id),
3716 reg_val: (u32)i_set);
3717 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_id),
3718 reg_val: (u32)(i_set >> 32));
3719 hena |= BIT_ULL(flow_id);
3720 }
3721 }
3722
3723 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), reg_val: (u32)hena);
3724 i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), reg_val: (u32)(hena >> 32));
3725 i40e_flush(hw);
3726
3727 return 0;
3728}
3729
3730/**
3731 * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
3732 * @vsi: Pointer to the targeted VSI
3733 * @input: The filter to update or NULL to indicate deletion
3734 * @sw_idx: Software index to the filter
3735 * @cmd: The command to get or set Rx flow classification rules
3736 *
3737 * This function updates (or deletes) a Flow Director entry from
3738 * the hlist of the corresponding PF
3739 *
3740 * Returns 0 on success
3741 **/
3742static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
3743 struct i40e_fdir_filter *input,
3744 u16 sw_idx,
3745 struct ethtool_rxnfc *cmd)
3746{
3747 struct i40e_fdir_filter *rule, *parent;
3748 struct i40e_pf *pf = vsi->back;
3749 struct hlist_node *node2;
3750 int err = -EINVAL;
3751
3752 parent = NULL;
3753 rule = NULL;
3754
3755 hlist_for_each_entry_safe(rule, node2,
3756 &pf->fdir_filter_list, fdir_node) {
3757 /* hash found, or no matching entry */
3758 if (rule->fd_id >= sw_idx)
3759 break;
3760 parent = rule;
3761 }
3762
3763 /* if there is an old rule occupying our place remove it */
3764 if (rule && (rule->fd_id == sw_idx)) {
3765 /* Remove this rule, since we're either deleting it, or
3766 * replacing it.
3767 */
3768 err = i40e_add_del_fdir(vsi, input: rule, add: false);
3769 hlist_del(n: &rule->fdir_node);
3770 kfree(objp: rule);
3771 pf->fdir_pf_active_filters--;
3772 }
3773
3774 /* If we weren't given an input, this is a delete, so just return the
3775 * error code indicating if there was an entry at the requested slot
3776 */
3777 if (!input)
3778 return err;
3779
3780 /* Otherwise, install the new rule as requested */
3781 INIT_HLIST_NODE(h: &input->fdir_node);
3782
3783 /* add filter to the list */
3784 if (parent)
3785 hlist_add_behind(n: &input->fdir_node, prev: &parent->fdir_node);
3786 else
3787 hlist_add_head(n: &input->fdir_node,
3788 h: &pf->fdir_filter_list);
3789
3790 /* update counts */
3791 pf->fdir_pf_active_filters++;
3792
3793 return 0;
3794}
3795
3796/**
3797 * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
3798 * @pf: pointer to PF structure
3799 *
3800 * This function searches the list of filters and determines which FLX_PIT
3801 * entries are still required. It will prune any entries which are no longer
3802 * in use after the deletion.
3803 **/
3804static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
3805{
3806 struct i40e_flex_pit *entry, *tmp;
3807 struct i40e_fdir_filter *rule;
3808
3809 /* First, we'll check the l3 table */
3810 list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
3811 bool found = false;
3812
3813 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3814 if (rule->flow_type != IP_USER_FLOW)
3815 continue;
3816 if (rule->flex_filter &&
3817 rule->flex_offset == entry->src_offset) {
3818 found = true;
3819 break;
3820 }
3821 }
3822
3823 /* If we didn't find the filter, then we can prune this entry
3824 * from the list.
3825 */
3826 if (!found) {
3827 list_del(entry: &entry->list);
3828 kfree(objp: entry);
3829 }
3830 }
3831
3832 /* Followed by the L4 table */
3833 list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
3834 bool found = false;
3835
3836 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3837 /* Skip this filter if it's L3, since we already
3838 * checked those in the above loop
3839 */
3840 if (rule->flow_type == IP_USER_FLOW)
3841 continue;
3842 if (rule->flex_filter &&
3843 rule->flex_offset == entry->src_offset) {
3844 found = true;
3845 break;
3846 }
3847 }
3848
3849 /* If we didn't find the filter, then we can prune this entry
3850 * from the list.
3851 */
3852 if (!found) {
3853 list_del(entry: &entry->list);
3854 kfree(objp: entry);
3855 }
3856 }
3857}
3858
3859/**
3860 * i40e_del_fdir_entry - Deletes a Flow Director filter entry
3861 * @vsi: Pointer to the targeted VSI
3862 * @cmd: The command to get or set Rx flow classification rules
3863 *
3864 * The function removes a Flow Director filter entry from the
3865 * hlist of the corresponding PF
3866 *
3867 * Returns 0 on success
3868 */
3869static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
3870 struct ethtool_rxnfc *cmd)
3871{
3872 struct ethtool_rx_flow_spec *fsp =
3873 (struct ethtool_rx_flow_spec *)&cmd->fs;
3874 struct i40e_pf *pf = vsi->back;
3875 int ret = 0;
3876
3877 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
3878 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3879 return -EBUSY;
3880
3881 if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3882 return -EBUSY;
3883
3884 ret = i40e_update_ethtool_fdir_entry(vsi, NULL, sw_idx: fsp->location, cmd);
3885
3886 i40e_prune_flex_pit_list(pf);
3887
3888 i40e_fdir_check_and_reenable(pf);
3889 return ret;
3890}
3891
3892/**
3893 * i40e_unused_pit_index - Find an unused PIT index for given list
3894 * @pf: the PF data structure
3895 *
3896 * Find the first unused flexible PIT index entry. We search both the L3 and
3897 * L4 flexible PIT lists so that the returned index is unique and unused by
3898 * either currently programmed L3 or L4 filters. We use a bit field as storage
3899 * to track which indexes are already used.
3900 **/
3901static u8 i40e_unused_pit_index(struct i40e_pf *pf)
3902{
3903 unsigned long available_index = 0xFF;
3904 struct i40e_flex_pit *entry;
3905
3906 /* We need to make sure that the new index isn't in use by either L3
3907 * or L4 filters so that IP_USER_FLOW filters can program both L3 and
3908 * L4 to use the same index.
3909 */
3910
3911 list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
3912 clear_bit(nr: entry->pit_index, addr: &available_index);
3913
3914 list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
3915 clear_bit(nr: entry->pit_index, addr: &available_index);
3916
3917 return find_first_bit(addr: &available_index, size: 8);
3918}
3919
3920/**
3921 * i40e_find_flex_offset - Find an existing flex src_offset
3922 * @flex_pit_list: L3 or L4 flex PIT list
3923 * @src_offset: new src_offset to find
3924 *
3925 * Searches the flex_pit_list for an existing offset. If no offset is
3926 * currently programmed, then this will return an ERR_PTR if there is no space
3927 * to add a new offset, otherwise it returns NULL.
3928 **/
3929static
3930struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
3931 u16 src_offset)
3932{
3933 struct i40e_flex_pit *entry;
3934 int size = 0;
3935
3936 /* Search for the src_offset first. If we find a matching entry
3937 * already programmed, we can simply re-use it.
3938 */
3939 list_for_each_entry(entry, flex_pit_list, list) {
3940 size++;
3941 if (entry->src_offset == src_offset)
3942 return entry;
3943 }
3944
3945 /* If we haven't found an entry yet, then the provided src offset has
3946 * not yet been programmed. We will program the src offset later on,
3947 * but we need to indicate whether there is enough space to do so
3948 * here. We'll make use of ERR_PTR for this purpose.
3949 */
3950 if (size >= I40E_FLEX_PIT_TABLE_SIZE)
3951 return ERR_PTR(error: -ENOSPC);
3952
3953 return NULL;
3954}
3955
3956/**
3957 * i40e_add_flex_offset - Add src_offset to flex PIT table list
3958 * @flex_pit_list: L3 or L4 flex PIT list
3959 * @src_offset: new src_offset to add
3960 * @pit_index: the PIT index to program
3961 *
3962 * This function programs the new src_offset to the list. It is expected that
3963 * i40e_find_flex_offset has already been tried and returned NULL, indicating
3964 * that this offset is not programmed, and that the list has enough space to
3965 * store another offset.
3966 *
3967 * Returns 0 on success, and negative value on error.
3968 **/
3969static int i40e_add_flex_offset(struct list_head *flex_pit_list,
3970 u16 src_offset,
3971 u8 pit_index)
3972{
3973 struct i40e_flex_pit *new_pit, *entry;
3974
3975 new_pit = kzalloc(size: sizeof(*entry), GFP_KERNEL);
3976 if (!new_pit)
3977 return -ENOMEM;
3978
3979 new_pit->src_offset = src_offset;
3980 new_pit->pit_index = pit_index;
3981
3982 /* We need to insert this item such that the list is sorted by
3983 * src_offset in ascending order.
3984 */
3985 list_for_each_entry(entry, flex_pit_list, list) {
3986 if (new_pit->src_offset < entry->src_offset) {
3987 list_add_tail(new: &new_pit->list, head: &entry->list);
3988 return 0;
3989 }
3990
3991 /* If we found an entry with our offset already programmed we
3992 * can simply return here, after freeing the memory. However,
3993 * if the pit_index does not match we need to report an error.
3994 */
3995 if (new_pit->src_offset == entry->src_offset) {
3996 int err = 0;
3997
3998 /* If the PIT index is not the same we can't re-use
3999 * the entry, so we must report an error.
4000 */
4001 if (new_pit->pit_index != entry->pit_index)
4002 err = -EINVAL;
4003
4004 kfree(objp: new_pit);
4005 return err;
4006 }
4007 }
4008
4009 /* If we reached here, then we haven't yet added the item. This means
4010 * that we should add the item at the end of the list.
4011 */
4012 list_add_tail(new: &new_pit->list, head: flex_pit_list);
4013 return 0;
4014}
4015
4016/**
4017 * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
4018 * @pf: Pointer to the PF structure
4019 * @flex_pit_list: list of flexible src offsets in use
4020 * @flex_pit_start: index to first entry for this section of the table
4021 *
4022 * In order to handle flexible data, the hardware uses a table of values
4023 * called the FLX_PIT table. This table is used to indicate which sections of
4024 * the input correspond to what PIT index values. Unfortunately, hardware is
4025 * very restrictive about programming this table. Entries must be ordered by
4026 * src_offset in ascending order, without duplicates. Additionally, unused
4027 * entries must be set to the unused index value, and must have valid size and
4028 * length according to the src_offset ordering.
4029 *
4030 * This function will reprogram the FLX_PIT register from a book-keeping
4031 * structure that we guarantee is already ordered correctly, and has no more
4032 * than 3 entries.
4033 *
4034 * To make things easier, we only support flexible values of one word length,
4035 * rather than allowing variable length flexible values.
4036 **/
4037static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
4038 struct list_head *flex_pit_list,
4039 int flex_pit_start)
4040{
4041 struct i40e_flex_pit *entry = NULL;
4042 u16 last_offset = 0;
4043 int i = 0, j = 0;
4044
4045 /* First, loop over the list of flex PIT entries, and reprogram the
4046 * registers.
4047 */
4048 list_for_each_entry(entry, flex_pit_list, list) {
4049 /* We have to be careful when programming values for the
4050 * largest SRC_OFFSET value. It is possible that adding
4051 * additional empty values at the end would overflow the space
4052 * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
4053 * we check here and add the empty values prior to adding the
4054 * largest value.
4055 *
4056 * To determine this, we will use a loop from i+1 to 3, which
4057 * will determine whether the unused entries would have valid
4058 * SRC_OFFSET. Note that there cannot be extra entries past
4059 * this value, because the only valid values would have been
4060 * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
4061 * have been added to the list in the first place.
4062 */
4063 for (j = i + 1; j < 3; j++) {
4064 u16 offset = entry->src_offset + j;
4065 int index = flex_pit_start + i;
4066 u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
4067 1,
4068 offset - 3);
4069
4070 if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
4071 i40e_write_rx_ctl(hw: &pf->hw,
4072 I40E_PRTQF_FLX_PIT(index),
4073 reg_val: value);
4074 i++;
4075 }
4076 }
4077
4078 /* Now, we can program the actual value into the table */
4079 i40e_write_rx_ctl(hw: &pf->hw,
4080 I40E_PRTQF_FLX_PIT(flex_pit_start + i),
4081 I40E_FLEX_PREP_VAL(entry->pit_index + 50,
4082 1,
4083 entry->src_offset));
4084 i++;
4085 }
4086
4087 /* In order to program the last entries in the table, we need to
4088 * determine the valid offset. If the list is empty, we'll just start
4089 * with 0. Otherwise, we'll start with the last item offset and add 1.
4090 * This ensures that all entries have valid sizes. If we don't do this
4091 * correctly, the hardware will disable flexible field parsing.
4092 */
4093 if (!list_empty(head: flex_pit_list))
4094 last_offset = list_prev_entry(entry, list)->src_offset + 1;
4095
4096 for (; i < 3; i++, last_offset++) {
4097 i40e_write_rx_ctl(hw: &pf->hw,
4098 I40E_PRTQF_FLX_PIT(flex_pit_start + i),
4099 I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
4100 1,
4101 last_offset));
4102 }
4103}
4104
4105/**
4106 * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
4107 * @pf: pointer to the PF structure
4108 *
4109 * This function reprograms both the L3 and L4 FLX_PIT tables. See the
4110 * internal helper function for implementation details.
4111 **/
4112static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
4113{
4114 __i40e_reprogram_flex_pit(pf, flex_pit_list: &pf->l3_flex_pit_list,
4115 I40E_FLEX_PIT_IDX_START_L3);
4116
4117 __i40e_reprogram_flex_pit(pf, flex_pit_list: &pf->l4_flex_pit_list,
4118 I40E_FLEX_PIT_IDX_START_L4);
4119
4120 /* We also need to program the L3 and L4 GLQF ORT register */
4121 i40e_write_rx_ctl(hw: &pf->hw,
4122 I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
4123 I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
4124 3, 1));
4125
4126 i40e_write_rx_ctl(hw: &pf->hw,
4127 I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
4128 I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
4129 3, 1));
4130}
4131
4132/**
4133 * i40e_flow_str - Converts a flow_type into a human readable string
4134 * @fsp: the flow specification
4135 *
4136 * Currently only flow types we support are included here, and the string
4137 * value attempts to match what ethtool would use to configure this flow type.
4138 **/
4139static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
4140{
4141 switch (fsp->flow_type & ~FLOW_EXT) {
4142 case TCP_V4_FLOW:
4143 return "tcp4";
4144 case UDP_V4_FLOW:
4145 return "udp4";
4146 case SCTP_V4_FLOW:
4147 return "sctp4";
4148 case IP_USER_FLOW:
4149 return "ip4";
4150 case TCP_V6_FLOW:
4151 return "tcp6";
4152 case UDP_V6_FLOW:
4153 return "udp6";
4154 case SCTP_V6_FLOW:
4155 return "sctp6";
4156 case IPV6_USER_FLOW:
4157 return "ip6";
4158 default:
4159 return "unknown";
4160 }
4161}
4162
4163/**
4164 * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
4165 * @pit_index: PIT index to convert
4166 *
4167 * Returns the mask for a given PIT index. Will return 0 if the pit_index is
4168 * of range.
4169 **/
4170static u64 i40e_pit_index_to_mask(int pit_index)
4171{
4172 switch (pit_index) {
4173 case 0:
4174 return I40E_FLEX_50_MASK;
4175 case 1:
4176 return I40E_FLEX_51_MASK;
4177 case 2:
4178 return I40E_FLEX_52_MASK;
4179 case 3:
4180 return I40E_FLEX_53_MASK;
4181 case 4:
4182 return I40E_FLEX_54_MASK;
4183 case 5:
4184 return I40E_FLEX_55_MASK;
4185 case 6:
4186 return I40E_FLEX_56_MASK;
4187 case 7:
4188 return I40E_FLEX_57_MASK;
4189 default:
4190 return 0;
4191 }
4192}
4193
4194/**
4195 * i40e_print_input_set - Show changes between two input sets
4196 * @vsi: the vsi being configured
4197 * @old: the old input set
4198 * @new: the new input set
4199 *
4200 * Print the difference between old and new input sets by showing which series
4201 * of words are toggled on or off. Only displays the bits we actually support
4202 * changing.
4203 **/
4204static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
4205{
4206 struct i40e_pf *pf = vsi->back;
4207 bool old_value, new_value;
4208 int i;
4209
4210 old_value = !!(old & I40E_L3_SRC_MASK);
4211 new_value = !!(new & I40E_L3_SRC_MASK);
4212 if (old_value != new_value)
4213 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
4214 old_value ? "ON" : "OFF",
4215 new_value ? "ON" : "OFF");
4216
4217 old_value = !!(old & I40E_L3_DST_MASK);
4218 new_value = !!(new & I40E_L3_DST_MASK);
4219 if (old_value != new_value)
4220 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
4221 old_value ? "ON" : "OFF",
4222 new_value ? "ON" : "OFF");
4223
4224 old_value = !!(old & I40E_L4_SRC_MASK);
4225 new_value = !!(new & I40E_L4_SRC_MASK);
4226 if (old_value != new_value)
4227 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
4228 old_value ? "ON" : "OFF",
4229 new_value ? "ON" : "OFF");
4230
4231 old_value = !!(old & I40E_L4_DST_MASK);
4232 new_value = !!(new & I40E_L4_DST_MASK);
4233 if (old_value != new_value)
4234 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
4235 old_value ? "ON" : "OFF",
4236 new_value ? "ON" : "OFF");
4237
4238 old_value = !!(old & I40E_VERIFY_TAG_MASK);
4239 new_value = !!(new & I40E_VERIFY_TAG_MASK);
4240 if (old_value != new_value)
4241 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
4242 old_value ? "ON" : "OFF",
4243 new_value ? "ON" : "OFF");
4244
4245 /* Show change of flexible filter entries */
4246 for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
4247 u64 flex_mask = i40e_pit_index_to_mask(pit_index: i);
4248
4249 old_value = !!(old & flex_mask);
4250 new_value = !!(new & flex_mask);
4251 if (old_value != new_value)
4252 netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
4253 i,
4254 old_value ? "ON" : "OFF",
4255 new_value ? "ON" : "OFF");
4256 }
4257
4258 netif_info(pf, drv, vsi->netdev, " Current input set: %0llx\n",
4259 old);
4260 netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
4261 new);
4262}
4263
4264/**
4265 * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
4266 * @vsi: pointer to the targeted VSI
4267 * @fsp: pointer to Rx flow specification
4268 * @userdef: userdefined data from flow specification
4269 *
4270 * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
4271 * for partial matches exists with a few limitations. First, hardware only
4272 * supports masking by word boundary (2 bytes) and not per individual bit.
4273 * Second, hardware is limited to using one mask for a flow type and cannot
4274 * use a separate mask for each filter.
4275 *
4276 * To support these limitations, if we already have a configured filter for
4277 * the specified type, this function enforces that new filters of the type
4278 * match the configured input set. Otherwise, if we do not have a filter of
4279 * the specified type, we allow the input set to be updated to match the
4280 * desired filter.
4281 *
4282 * To help ensure that administrators understand why filters weren't displayed
4283 * as supported, we print a diagnostic message displaying how the input set
4284 * would change and warning to delete the preexisting filters if required.
4285 *
4286 * Returns 0 on successful input set match, and a negative return code on
4287 * failure.
4288 **/
4289static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
4290 struct ethtool_rx_flow_spec *fsp,
4291 struct i40e_rx_flow_userdef *userdef)
4292{
4293 static const __be32 ipv6_full_mask[4] = {cpu_to_be32(0xffffffff),
4294 cpu_to_be32(0xffffffff), cpu_to_be32(0xffffffff),
4295 cpu_to_be32(0xffffffff)};
4296 struct ethtool_tcpip6_spec *tcp_ip6_spec;
4297 struct ethtool_usrip6_spec *usr_ip6_spec;
4298 struct ethtool_tcpip4_spec *tcp_ip4_spec;
4299 struct ethtool_usrip4_spec *usr_ip4_spec;
4300 struct i40e_pf *pf = vsi->back;
4301 u64 current_mask, new_mask;
4302 bool new_flex_offset = false;
4303 bool flex_l3 = false;
4304 u16 *fdir_filter_count;
4305 u16 index, src_offset = 0;
4306 u8 pit_index = 0;
4307 int err;
4308
4309 switch (fsp->flow_type & ~FLOW_EXT) {
4310 case SCTP_V4_FLOW:
4311 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
4312 fdir_filter_count = &pf->fd_sctp4_filter_cnt;
4313 break;
4314 case TCP_V4_FLOW:
4315 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
4316 fdir_filter_count = &pf->fd_tcp4_filter_cnt;
4317 break;
4318 case UDP_V4_FLOW:
4319 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
4320 fdir_filter_count = &pf->fd_udp4_filter_cnt;
4321 break;
4322 case SCTP_V6_FLOW:
4323 index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
4324 fdir_filter_count = &pf->fd_sctp6_filter_cnt;
4325 break;
4326 case TCP_V6_FLOW:
4327 index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
4328 fdir_filter_count = &pf->fd_tcp6_filter_cnt;
4329 break;
4330 case UDP_V6_FLOW:
4331 index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
4332 fdir_filter_count = &pf->fd_udp6_filter_cnt;
4333 break;
4334 case IP_USER_FLOW:
4335 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
4336 fdir_filter_count = &pf->fd_ip4_filter_cnt;
4337 flex_l3 = true;
4338 break;
4339 case IPV6_USER_FLOW:
4340 index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
4341 fdir_filter_count = &pf->fd_ip6_filter_cnt;
4342 flex_l3 = true;
4343 break;
4344 default:
4345 return -EOPNOTSUPP;
4346 }
4347
4348 /* Read the current input set from register memory. */
4349 current_mask = i40e_read_fd_input_set(pf, addr: index);
4350 new_mask = current_mask;
4351
4352 /* Determine, if any, the required changes to the input set in order
4353 * to support the provided mask.
4354 *
4355 * Hardware only supports masking at word (2 byte) granularity and does
4356 * not support full bitwise masking. This implementation simplifies
4357 * even further and only supports fully enabled or fully disabled
4358 * masks for each field, even though we could split the ip4src and
4359 * ip4dst fields.
4360 */
4361 switch (fsp->flow_type & ~FLOW_EXT) {
4362 case SCTP_V4_FLOW:
4363 new_mask &= ~I40E_VERIFY_TAG_MASK;
4364 fallthrough;
4365 case TCP_V4_FLOW:
4366 case UDP_V4_FLOW:
4367 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
4368
4369 /* IPv4 source address */
4370 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4371 new_mask |= I40E_L3_SRC_MASK;
4372 else if (!tcp_ip4_spec->ip4src)
4373 new_mask &= ~I40E_L3_SRC_MASK;
4374 else
4375 return -EOPNOTSUPP;
4376
4377 /* IPv4 destination address */
4378 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4379 new_mask |= I40E_L3_DST_MASK;
4380 else if (!tcp_ip4_spec->ip4dst)
4381 new_mask &= ~I40E_L3_DST_MASK;
4382 else
4383 return -EOPNOTSUPP;
4384
4385 /* L4 source port */
4386 if (tcp_ip4_spec->psrc == htons(0xFFFF))
4387 new_mask |= I40E_L4_SRC_MASK;
4388 else if (!tcp_ip4_spec->psrc)
4389 new_mask &= ~I40E_L4_SRC_MASK;
4390 else
4391 return -EOPNOTSUPP;
4392
4393 /* L4 destination port */
4394 if (tcp_ip4_spec->pdst == htons(0xFFFF))
4395 new_mask |= I40E_L4_DST_MASK;
4396 else if (!tcp_ip4_spec->pdst)
4397 new_mask &= ~I40E_L4_DST_MASK;
4398 else
4399 return -EOPNOTSUPP;
4400
4401 /* Filtering on Type of Service is not supported. */
4402 if (tcp_ip4_spec->tos)
4403 return -EOPNOTSUPP;
4404
4405 break;
4406 case SCTP_V6_FLOW:
4407 new_mask &= ~I40E_VERIFY_TAG_MASK;
4408 fallthrough;
4409 case TCP_V6_FLOW:
4410 case UDP_V6_FLOW:
4411 tcp_ip6_spec = &fsp->m_u.tcp_ip6_spec;
4412
4413 /* Check if user provided IPv6 source address. */
4414 if (ipv6_addr_equal(a1: (struct in6_addr *)&tcp_ip6_spec->ip6src,
4415 a2: (struct in6_addr *)&ipv6_full_mask))
4416 new_mask |= I40E_L3_V6_SRC_MASK;
4417 else if (ipv6_addr_any(a: (struct in6_addr *)
4418 &tcp_ip6_spec->ip6src))
4419 new_mask &= ~I40E_L3_V6_SRC_MASK;
4420 else
4421 return -EOPNOTSUPP;
4422
4423 /* Check if user provided destination address. */
4424 if (ipv6_addr_equal(a1: (struct in6_addr *)&tcp_ip6_spec->ip6dst,
4425 a2: (struct in6_addr *)&ipv6_full_mask))
4426 new_mask |= I40E_L3_V6_DST_MASK;
4427 else if (ipv6_addr_any(a: (struct in6_addr *)
4428 &tcp_ip6_spec->ip6dst))
4429 new_mask &= ~I40E_L3_V6_DST_MASK;
4430 else
4431 return -EOPNOTSUPP;
4432
4433 /* L4 source port */
4434 if (tcp_ip6_spec->psrc == htons(0xFFFF))
4435 new_mask |= I40E_L4_SRC_MASK;
4436 else if (!tcp_ip6_spec->psrc)
4437 new_mask &= ~I40E_L4_SRC_MASK;
4438 else
4439 return -EOPNOTSUPP;
4440
4441 /* L4 destination port */
4442 if (tcp_ip6_spec->pdst == htons(0xFFFF))
4443 new_mask |= I40E_L4_DST_MASK;
4444 else if (!tcp_ip6_spec->pdst)
4445 new_mask &= ~I40E_L4_DST_MASK;
4446 else
4447 return -EOPNOTSUPP;
4448
4449 /* Filtering on Traffic Classes is not supported. */
4450 if (tcp_ip6_spec->tclass)
4451 return -EOPNOTSUPP;
4452 break;
4453 case IP_USER_FLOW:
4454 usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
4455
4456 /* IPv4 source address */
4457 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4458 new_mask |= I40E_L3_SRC_MASK;
4459 else if (!usr_ip4_spec->ip4src)
4460 new_mask &= ~I40E_L3_SRC_MASK;
4461 else
4462 return -EOPNOTSUPP;
4463
4464 /* IPv4 destination address */
4465 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4466 new_mask |= I40E_L3_DST_MASK;
4467 else if (!usr_ip4_spec->ip4dst)
4468 new_mask &= ~I40E_L3_DST_MASK;
4469 else
4470 return -EOPNOTSUPP;
4471
4472 /* First 4 bytes of L4 header */
4473 if (usr_ip4_spec->l4_4_bytes)
4474 return -EOPNOTSUPP;
4475
4476 /* Filtering on Type of Service is not supported. */
4477 if (usr_ip4_spec->tos)
4478 return -EOPNOTSUPP;
4479
4480 /* Filtering on IP version is not supported */
4481 if (usr_ip4_spec->ip_ver)
4482 return -EINVAL;
4483
4484 /* Filtering on L4 protocol is not supported */
4485 if (usr_ip4_spec->proto)
4486 return -EINVAL;
4487
4488 break;
4489 case IPV6_USER_FLOW:
4490 usr_ip6_spec = &fsp->m_u.usr_ip6_spec;
4491
4492 /* Check if user provided IPv6 source address. */
4493 if (ipv6_addr_equal(a1: (struct in6_addr *)&usr_ip6_spec->ip6src,
4494 a2: (struct in6_addr *)&ipv6_full_mask))
4495 new_mask |= I40E_L3_V6_SRC_MASK;
4496 else if (ipv6_addr_any(a: (struct in6_addr *)
4497 &usr_ip6_spec->ip6src))
4498 new_mask &= ~I40E_L3_V6_SRC_MASK;
4499 else
4500 return -EOPNOTSUPP;
4501
4502 /* Check if user provided destination address. */
4503 if (ipv6_addr_equal(a1: (struct in6_addr *)&usr_ip6_spec->ip6dst,
4504 a2: (struct in6_addr *)&ipv6_full_mask))
4505 new_mask |= I40E_L3_V6_DST_MASK;
4506 else if (ipv6_addr_any(a: (struct in6_addr *)
4507 &usr_ip6_spec->ip6dst))
4508 new_mask &= ~I40E_L3_V6_DST_MASK;
4509 else
4510 return -EOPNOTSUPP;
4511
4512 if (usr_ip6_spec->l4_4_bytes)
4513 return -EOPNOTSUPP;
4514
4515 /* Filtering on Traffic class is not supported. */
4516 if (usr_ip6_spec->tclass)
4517 return -EOPNOTSUPP;
4518
4519 /* Filtering on L4 protocol is not supported */
4520 if (usr_ip6_spec->l4_proto)
4521 return -EINVAL;
4522
4523 break;
4524 default:
4525 return -EOPNOTSUPP;
4526 }
4527
4528 if (fsp->flow_type & FLOW_EXT) {
4529 /* Allow only 802.1Q and no etype defined, as
4530 * later it's modified to 0x8100
4531 */
4532 if (fsp->h_ext.vlan_etype != htons(ETH_P_8021Q) &&
4533 fsp->h_ext.vlan_etype != 0)
4534 return -EOPNOTSUPP;
4535 if (fsp->m_ext.vlan_tci == htons(0xFFFF))
4536 new_mask |= I40E_VLAN_SRC_MASK;
4537 else
4538 new_mask &= ~I40E_VLAN_SRC_MASK;
4539 }
4540
4541 /* First, clear all flexible filter entries */
4542 new_mask &= ~I40E_FLEX_INPUT_MASK;
4543
4544 /* If we have a flexible filter, try to add this offset to the correct
4545 * flexible filter PIT list. Once finished, we can update the mask.
4546 * If the src_offset changed, we will get a new mask value which will
4547 * trigger an input set change.
4548 */
4549 if (userdef->flex_filter) {
4550 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
4551
4552 /* Flexible offset must be even, since the flexible payload
4553 * must be aligned on 2-byte boundary.
4554 */
4555 if (userdef->flex_offset & 0x1) {
4556 dev_warn(&pf->pdev->dev,
4557 "Flexible data offset must be 2-byte aligned\n");
4558 return -EINVAL;
4559 }
4560
4561 src_offset = userdef->flex_offset >> 1;
4562
4563 /* FLX_PIT source offset value is only so large */
4564 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
4565 dev_warn(&pf->pdev->dev,
4566 "Flexible data must reside within first 64 bytes of the packet payload\n");
4567 return -EINVAL;
4568 }
4569
4570 /* See if this offset has already been programmed. If we get
4571 * an ERR_PTR, then the filter is not safe to add. Otherwise,
4572 * if we get a NULL pointer, this means we will need to add
4573 * the offset.
4574 */
4575 flex_pit = i40e_find_flex_offset(flex_pit_list: &pf->l4_flex_pit_list,
4576 src_offset);
4577 if (IS_ERR(ptr: flex_pit))
4578 return PTR_ERR(ptr: flex_pit);
4579
4580 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
4581 * packet types, and thus we need to program both L3 and L4
4582 * flexible values. These must have identical flexible index,
4583 * as otherwise we can't correctly program the input set. So
4584 * we'll find both an L3 and L4 index and make sure they are
4585 * the same.
4586 */
4587 if (flex_l3) {
4588 l3_flex_pit =
4589 i40e_find_flex_offset(flex_pit_list: &pf->l3_flex_pit_list,
4590 src_offset);
4591 if (IS_ERR(ptr: l3_flex_pit))
4592 return PTR_ERR(ptr: l3_flex_pit);
4593
4594 if (flex_pit) {
4595 /* If we already had a matching L4 entry, we
4596 * need to make sure that the L3 entry we
4597 * obtained uses the same index.
4598 */
4599 if (l3_flex_pit) {
4600 if (l3_flex_pit->pit_index !=
4601 flex_pit->pit_index) {
4602 return -EINVAL;
4603 }
4604 } else {
4605 new_flex_offset = true;
4606 }
4607 } else {
4608 flex_pit = l3_flex_pit;
4609 }
4610 }
4611
4612 /* If we didn't find an existing flex offset, we need to
4613 * program a new one. However, we don't immediately program it
4614 * here because we will wait to program until after we check
4615 * that it is safe to change the input set.
4616 */
4617 if (!flex_pit) {
4618 new_flex_offset = true;
4619 pit_index = i40e_unused_pit_index(pf);
4620 } else {
4621 pit_index = flex_pit->pit_index;
4622 }
4623
4624 /* Update the mask with the new offset */
4625 new_mask |= i40e_pit_index_to_mask(pit_index);
4626 }
4627
4628 /* If the mask and flexible filter offsets for this filter match the
4629 * currently programmed values we don't need any input set change, so
4630 * this filter is safe to install.
4631 */
4632 if (new_mask == current_mask && !new_flex_offset)
4633 return 0;
4634
4635 netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
4636 i40e_flow_str(fsp));
4637 i40e_print_input_set(vsi, old: current_mask, new: new_mask);
4638 if (new_flex_offset) {
4639 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
4640 pit_index, src_offset);
4641 }
4642
4643 /* Hardware input sets are global across multiple ports, so even the
4644 * main port cannot change them when in MFP mode as this would impact
4645 * any filters on the other ports.
4646 */
4647 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4648 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
4649 return -EOPNOTSUPP;
4650 }
4651
4652 /* This filter requires us to update the input set. However, hardware
4653 * only supports one input set per flow type, and does not support
4654 * separate masks for each filter. This means that we can only support
4655 * a single mask for all filters of a specific type.
4656 *
4657 * If we have preexisting filters, they obviously depend on the
4658 * current programmed input set. Display a diagnostic message in this
4659 * case explaining why the filter could not be accepted.
4660 */
4661 if (*fdir_filter_count) {
4662 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
4663 i40e_flow_str(fsp),
4664 *fdir_filter_count);
4665 return -EOPNOTSUPP;
4666 }
4667
4668 i40e_write_fd_input_set(pf, addr: index, val: new_mask);
4669
4670 /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
4671 * frames. If we're programming the input set for IPv4/Other, we also
4672 * need to program the IPv4/Fragmented input set. Since we don't have
4673 * separate support, we'll always assume and enforce that the two flow
4674 * types must have matching input sets.
4675 */
4676 if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
4677 i40e_write_fd_input_set(pf, addr: I40E_FILTER_PCTYPE_FRAG_IPV4,
4678 val: new_mask);
4679
4680 /* Add the new offset and update table, if necessary */
4681 if (new_flex_offset) {
4682 err = i40e_add_flex_offset(flex_pit_list: &pf->l4_flex_pit_list, src_offset,
4683 pit_index);
4684 if (err)
4685 return err;
4686
4687 if (flex_l3) {
4688 err = i40e_add_flex_offset(flex_pit_list: &pf->l3_flex_pit_list,
4689 src_offset,
4690 pit_index);
4691 if (err)
4692 return err;
4693 }
4694
4695 i40e_reprogram_flex_pit(pf);
4696 }
4697
4698 return 0;
4699}
4700
4701/**
4702 * i40e_match_fdir_filter - Return true of two filters match
4703 * @a: pointer to filter struct
4704 * @b: pointer to filter struct
4705 *
4706 * Returns true if the two filters match exactly the same criteria. I.e. they
4707 * match the same flow type and have the same parameters. We don't need to
4708 * check any input-set since all filters of the same flow type must use the
4709 * same input set.
4710 **/
4711static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a,
4712 struct i40e_fdir_filter *b)
4713{
4714 /* The filters do not much if any of these criteria differ. */
4715 if (a->dst_ip != b->dst_ip ||
4716 a->src_ip != b->src_ip ||
4717 a->dst_port != b->dst_port ||
4718 a->src_port != b->src_port ||
4719 a->flow_type != b->flow_type ||
4720 a->ipl4_proto != b->ipl4_proto ||
4721 a->vlan_tag != b->vlan_tag ||
4722 a->vlan_etype != b->vlan_etype)
4723 return false;
4724
4725 return true;
4726}
4727
4728/**
4729 * i40e_disallow_matching_filters - Check that new filters differ
4730 * @vsi: pointer to the targeted VSI
4731 * @input: new filter to check
4732 *
4733 * Due to hardware limitations, it is not possible for two filters that match
4734 * similar criteria to be programmed at the same time. This is true for a few
4735 * reasons:
4736 *
4737 * (a) all filters matching a particular flow type must use the same input
4738 * set, that is they must match the same criteria.
4739 * (b) different flow types will never match the same packet, as the flow type
4740 * is decided by hardware before checking which rules apply.
4741 * (c) hardware has no way to distinguish which order filters apply in.
4742 *
4743 * Due to this, we can't really support using the location data to order
4744 * filters in the hardware parsing. It is technically possible for the user to
4745 * request two filters matching the same criteria but which select different
4746 * queues. In this case, rather than keep both filters in the list, we reject
4747 * the 2nd filter when the user requests adding it.
4748 *
4749 * This avoids needing to track location for programming the filter to
4750 * hardware, and ensures that we avoid some strange scenarios involving
4751 * deleting filters which match the same criteria.
4752 **/
4753static int i40e_disallow_matching_filters(struct i40e_vsi *vsi,
4754 struct i40e_fdir_filter *input)
4755{
4756 struct i40e_pf *pf = vsi->back;
4757 struct i40e_fdir_filter *rule;
4758 struct hlist_node *node2;
4759
4760 /* Loop through every filter, and check that it doesn't match */
4761 hlist_for_each_entry_safe(rule, node2,
4762 &pf->fdir_filter_list, fdir_node) {
4763 /* Don't check the filters match if they share the same fd_id,
4764 * since the new filter is actually just updating the target
4765 * of the old filter.
4766 */
4767 if (rule->fd_id == input->fd_id)
4768 continue;
4769
4770 /* If any filters match, then print a warning message to the
4771 * kernel message buffer and bail out.
4772 */
4773 if (i40e_match_fdir_filter(a: rule, b: input)) {
4774 dev_warn(&pf->pdev->dev,
4775 "Existing user defined filter %d already matches this flow.\n",
4776 rule->fd_id);
4777 return -EINVAL;
4778 }
4779 }
4780
4781 return 0;
4782}
4783
4784/**
4785 * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
4786 * @vsi: pointer to the targeted VSI
4787 * @cmd: command to get or set RX flow classification rules
4788 *
4789 * Add Flow Director filters for a specific flow spec based on their
4790 * protocol. Returns 0 if the filters were successfully added.
4791 **/
4792static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
4793 struct ethtool_rxnfc *cmd)
4794{
4795 struct i40e_rx_flow_userdef userdef;
4796 struct ethtool_rx_flow_spec *fsp;
4797 struct i40e_fdir_filter *input;
4798 u16 dest_vsi = 0, q_index = 0;
4799 struct i40e_pf *pf;
4800 int ret = -EINVAL;
4801 u8 dest_ctl;
4802
4803 if (!vsi)
4804 return -EINVAL;
4805 pf = vsi->back;
4806
4807 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
4808 return -EOPNOTSUPP;
4809
4810 if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
4811 return -ENOSPC;
4812
4813 if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
4814 test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
4815 return -EBUSY;
4816
4817 if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
4818 return -EBUSY;
4819
4820 fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
4821
4822 /* Parse the user-defined field */
4823 if (i40e_parse_rx_flow_user_data(fsp, data: &userdef))
4824 return -EINVAL;
4825
4826 /* Extended MAC field is not supported */
4827 if (fsp->flow_type & FLOW_MAC_EXT)
4828 return -EINVAL;
4829
4830 ret = i40e_check_fdir_input_set(vsi, fsp, userdef: &userdef);
4831 if (ret)
4832 return ret;
4833
4834 if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
4835 pf->hw.func_caps.fd_filters_guaranteed)) {
4836 return -EINVAL;
4837 }
4838
4839 /* ring_cookie is either the drop index, or is a mask of the queue
4840 * index and VF id we wish to target.
4841 */
4842 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
4843 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4844 } else {
4845 u32 ring = ethtool_get_flow_spec_ring(ring_cookie: fsp->ring_cookie);
4846 u8 vf = ethtool_get_flow_spec_ring_vf(ring_cookie: fsp->ring_cookie);
4847
4848 if (!vf) {
4849 if (ring >= vsi->num_queue_pairs)
4850 return -EINVAL;
4851 dest_vsi = vsi->id;
4852 } else {
4853 /* VFs are zero-indexed, so we subtract one here */
4854 vf--;
4855
4856 if (vf >= pf->num_alloc_vfs)
4857 return -EINVAL;
4858 if (ring >= pf->vf[vf].num_queue_pairs)
4859 return -EINVAL;
4860 dest_vsi = pf->vf[vf].lan_vsi_id;
4861 }
4862 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
4863 q_index = ring;
4864 }
4865
4866 input = kzalloc(size: sizeof(*input), GFP_KERNEL);
4867
4868 if (!input)
4869 return -ENOMEM;
4870
4871 input->fd_id = fsp->location;
4872 input->q_index = q_index;
4873 input->dest_vsi = dest_vsi;
4874 input->dest_ctl = dest_ctl;
4875 input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
4876 input->cnt_index = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
4877 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4878 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4879 input->flow_type = fsp->flow_type & ~FLOW_EXT;
4880
4881 input->vlan_etype = fsp->h_ext.vlan_etype;
4882 if (!fsp->m_ext.vlan_etype && fsp->h_ext.vlan_tci)
4883 input->vlan_etype = cpu_to_be16(ETH_P_8021Q);
4884 if (fsp->m_ext.vlan_tci && input->vlan_etype)
4885 input->vlan_tag = fsp->h_ext.vlan_tci;
4886 if (input->flow_type == IPV6_USER_FLOW ||
4887 input->flow_type == UDP_V6_FLOW ||
4888 input->flow_type == TCP_V6_FLOW ||
4889 input->flow_type == SCTP_V6_FLOW) {
4890 /* Reverse the src and dest notion, since the HW expects them
4891 * to be from Tx perspective where as the input from user is
4892 * from Rx filter view.
4893 */
4894 input->ipl4_proto = fsp->h_u.usr_ip6_spec.l4_proto;
4895 input->dst_port = fsp->h_u.tcp_ip6_spec.psrc;
4896 input->src_port = fsp->h_u.tcp_ip6_spec.pdst;
4897 memcpy(input->dst_ip6, fsp->h_u.ah_ip6_spec.ip6src,
4898 sizeof(__be32) * 4);
4899 memcpy(input->src_ip6, fsp->h_u.ah_ip6_spec.ip6dst,
4900 sizeof(__be32) * 4);
4901 } else {
4902 /* Reverse the src and dest notion, since the HW expects them
4903 * to be from Tx perspective where as the input from user is
4904 * from Rx filter view.
4905 */
4906 input->ipl4_proto = fsp->h_u.usr_ip4_spec.proto;
4907 input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
4908 input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
4909 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4910 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4911 }
4912
4913 if (userdef.flex_filter) {
4914 input->flex_filter = true;
4915 input->flex_word = cpu_to_be16(userdef.flex_word);
4916 input->flex_offset = userdef.flex_offset;
4917 }
4918
4919 /* Avoid programming two filters with identical match criteria. */
4920 ret = i40e_disallow_matching_filters(vsi, input);
4921 if (ret)
4922 goto free_filter_memory;
4923
4924 /* Add the input filter to the fdir_input_list, possibly replacing
4925 * a previous filter. Do not free the input structure after adding it
4926 * to the list as this would cause a use-after-free bug.
4927 */
4928 i40e_update_ethtool_fdir_entry(vsi, input, sw_idx: fsp->location, NULL);
4929 ret = i40e_add_del_fdir(vsi, input, add: true);
4930 if (ret)
4931 goto remove_sw_rule;
4932 return 0;
4933
4934remove_sw_rule:
4935 hlist_del(n: &input->fdir_node);
4936 pf->fdir_pf_active_filters--;
4937free_filter_memory:
4938 kfree(objp: input);
4939 return ret;
4940}
4941
4942/**
4943 * i40e_set_rxnfc - command to set RX flow classification rules
4944 * @netdev: network interface device structure
4945 * @cmd: ethtool rxnfc command
4946 *
4947 * Returns Success if the command is supported.
4948 **/
4949static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
4950{
4951 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
4952 struct i40e_vsi *vsi = np->vsi;
4953 struct i40e_pf *pf = vsi->back;
4954 int ret = -EOPNOTSUPP;
4955
4956 switch (cmd->cmd) {
4957 case ETHTOOL_SRXFH:
4958 ret = i40e_set_rss_hash_opt(pf, nfc: cmd);
4959 break;
4960 case ETHTOOL_SRXCLSRLINS:
4961 ret = i40e_add_fdir_ethtool(vsi, cmd);
4962 break;
4963 case ETHTOOL_SRXCLSRLDEL:
4964 ret = i40e_del_fdir_entry(vsi, cmd);
4965 break;
4966 default:
4967 break;
4968 }
4969
4970 return ret;
4971}
4972
4973/**
4974 * i40e_max_channels - get Max number of combined channels supported
4975 * @vsi: vsi pointer
4976 **/
4977static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
4978{
4979 /* TODO: This code assumes DCB and FD is disabled for now. */
4980 return vsi->alloc_queue_pairs;
4981}
4982
4983/**
4984 * i40e_get_channels - Get the current channels enabled and max supported etc.
4985 * @dev: network interface device structure
4986 * @ch: ethtool channels structure
4987 *
4988 * We don't support separate tx and rx queues as channels. The other count
4989 * represents how many queues are being used for control. max_combined counts
4990 * how many queue pairs we can support. They may not be mapped 1 to 1 with
4991 * q_vectors since we support a lot more queue pairs than q_vectors.
4992 **/
4993static void i40e_get_channels(struct net_device *dev,
4994 struct ethtool_channels *ch)
4995{
4996 struct i40e_netdev_priv *np = netdev_priv(dev);
4997 struct i40e_vsi *vsi = np->vsi;
4998 struct i40e_pf *pf = vsi->back;
4999
5000 /* report maximum channels */
5001 ch->max_combined = i40e_max_channels(vsi);
5002
5003 /* report info for other vector */
5004 ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
5005 ch->max_other = ch->other_count;
5006
5007 /* Note: This code assumes DCB is disabled for now. */
5008 ch->combined_count = vsi->num_queue_pairs;
5009}
5010
5011/**
5012 * i40e_set_channels - Set the new channels count.
5013 * @dev: network interface device structure
5014 * @ch: ethtool channels structure
5015 *
5016 * The new channels count may not be the same as requested by the user
5017 * since it gets rounded down to a power of 2 value.
5018 **/
5019static int i40e_set_channels(struct net_device *dev,
5020 struct ethtool_channels *ch)
5021{
5022 const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
5023 struct i40e_netdev_priv *np = netdev_priv(dev);
5024 unsigned int count = ch->combined_count;
5025 struct i40e_vsi *vsi = np->vsi;
5026 struct i40e_pf *pf = vsi->back;
5027 struct i40e_fdir_filter *rule;
5028 struct hlist_node *node2;
5029 int new_count;
5030 int err = 0;
5031
5032 /* We do not support setting channels for any other VSI at present */
5033 if (vsi->type != I40E_VSI_MAIN)
5034 return -EINVAL;
5035
5036 /* We do not support setting channels via ethtool when TCs are
5037 * configured through mqprio
5038 */
5039 if (i40e_is_tc_mqprio_enabled(pf))
5040 return -EINVAL;
5041
5042 /* verify they are not requesting separate vectors */
5043 if (!count || ch->rx_count || ch->tx_count)
5044 return -EINVAL;
5045
5046 /* verify other_count has not changed */
5047 if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
5048 return -EINVAL;
5049
5050 /* verify the number of channels does not exceed hardware limits */
5051 if (count > i40e_max_channels(vsi))
5052 return -EINVAL;
5053
5054 /* verify that the number of channels does not invalidate any current
5055 * flow director rules
5056 */
5057 hlist_for_each_entry_safe(rule, node2,
5058 &pf->fdir_filter_list, fdir_node) {
5059 if (rule->dest_ctl != drop && count <= rule->q_index) {
5060 dev_warn(&pf->pdev->dev,
5061 "Existing user defined filter %d assigns flow to queue %d\n",
5062 rule->fd_id, rule->q_index);
5063 err = -EINVAL;
5064 }
5065 }
5066
5067 if (err) {
5068 dev_err(&pf->pdev->dev,
5069 "Existing filter rules must be deleted to reduce combined channel count to %d\n",
5070 count);
5071 return err;
5072 }
5073
5074 /* update feature limits from largest to smallest supported values */
5075 /* TODO: Flow director limit, DCB etc */
5076
5077 /* use rss_reconfig to rebuild with new queue count and update traffic
5078 * class queue mapping
5079 */
5080 new_count = i40e_reconfig_rss_queues(pf, queue_count: count);
5081 if (new_count > 0)
5082 return 0;
5083 else
5084 return -EINVAL;
5085}
5086
5087/**
5088 * i40e_get_rxfh_key_size - get the RSS hash key size
5089 * @netdev: network interface device structure
5090 *
5091 * Returns the table size.
5092 **/
5093static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
5094{
5095 return I40E_HKEY_ARRAY_SIZE;
5096}
5097
5098/**
5099 * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
5100 * @netdev: network interface device structure
5101 *
5102 * Returns the table size.
5103 **/
5104static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
5105{
5106 return I40E_HLUT_ARRAY_SIZE;
5107}
5108
5109/**
5110 * i40e_get_rxfh - get the rx flow hash indirection table
5111 * @netdev: network interface device structure
5112 * @indir: indirection table
5113 * @key: hash key
5114 * @hfunc: hash function
5115 *
5116 * Reads the indirection table directly from the hardware. Returns 0 on
5117 * success.
5118 **/
5119static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
5120 u8 *hfunc)
5121{
5122 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
5123 struct i40e_vsi *vsi = np->vsi;
5124 u8 *lut, *seed = NULL;
5125 int ret;
5126 u16 i;
5127
5128 if (hfunc)
5129 *hfunc = ETH_RSS_HASH_TOP;
5130
5131 if (!indir)
5132 return 0;
5133
5134 seed = key;
5135 lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5136 if (!lut)
5137 return -ENOMEM;
5138 ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
5139 if (ret)
5140 goto out;
5141 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5142 indir[i] = (u32)(lut[i]);
5143
5144out:
5145 kfree(objp: lut);
5146
5147 return ret;
5148}
5149
5150/**
5151 * i40e_set_rxfh - set the rx flow hash indirection table
5152 * @netdev: network interface device structure
5153 * @indir: indirection table
5154 * @key: hash key
5155 * @hfunc: hash function to use
5156 *
5157 * Returns -EINVAL if the table specifies an invalid queue id, otherwise
5158 * returns 0 after programming the table.
5159 **/
5160static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
5161 const u8 *key, const u8 hfunc)
5162{
5163 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
5164 struct i40e_vsi *vsi = np->vsi;
5165 struct i40e_pf *pf = vsi->back;
5166 u8 *seed = NULL;
5167 u16 i;
5168
5169 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
5170 return -EOPNOTSUPP;
5171
5172 if (key) {
5173 if (!vsi->rss_hkey_user) {
5174 vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
5175 GFP_KERNEL);
5176 if (!vsi->rss_hkey_user)
5177 return -ENOMEM;
5178 }
5179 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
5180 seed = vsi->rss_hkey_user;
5181 }
5182 if (!vsi->rss_lut_user) {
5183 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5184 if (!vsi->rss_lut_user)
5185 return -ENOMEM;
5186 }
5187
5188 /* Each 32 bits pointed by 'indir' is stored with a lut entry */
5189 if (indir)
5190 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5191 vsi->rss_lut_user[i] = (u8)(indir[i]);
5192 else
5193 i40e_fill_rss_lut(pf, lut: vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
5194 rss_size: vsi->rss_size);
5195
5196 return i40e_config_rss(vsi, seed, lut: vsi->rss_lut_user,
5197 I40E_HLUT_ARRAY_SIZE);
5198}
5199
5200/**
5201 * i40e_get_priv_flags - report device private flags
5202 * @dev: network interface device structure
5203 *
5204 * The get string set count and the string set should be matched for each
5205 * flag returned. Add new strings for each flag to the i40e_gstrings_priv_flags
5206 * array.
5207 *
5208 * Returns a u32 bitmap of flags.
5209 **/
5210static u32 i40e_get_priv_flags(struct net_device *dev)
5211{
5212 struct i40e_netdev_priv *np = netdev_priv(dev);
5213 struct i40e_vsi *vsi = np->vsi;
5214 struct i40e_pf *pf = vsi->back;
5215 u32 i, j, ret_flags = 0;
5216
5217 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5218 const struct i40e_priv_flags *priv_flags;
5219
5220 priv_flags = &i40e_gstrings_priv_flags[i];
5221
5222 if (priv_flags->flag & pf->flags)
5223 ret_flags |= BIT(i);
5224 }
5225
5226 if (pf->hw.pf_id != 0)
5227 return ret_flags;
5228
5229 for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5230 const struct i40e_priv_flags *priv_flags;
5231
5232 priv_flags = &i40e_gl_gstrings_priv_flags[j];
5233
5234 if (priv_flags->flag & pf->flags)
5235 ret_flags |= BIT(i + j);
5236 }
5237
5238 return ret_flags;
5239}
5240
5241/**
5242 * i40e_set_priv_flags - set private flags
5243 * @dev: network interface device structure
5244 * @flags: bit flags to be set
5245 **/
5246static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
5247{
5248 struct i40e_netdev_priv *np = netdev_priv(dev);
5249 u64 orig_flags, new_flags, changed_flags;
5250 enum i40e_admin_queue_err adq_err;
5251 struct i40e_vsi *vsi = np->vsi;
5252 struct i40e_pf *pf = vsi->back;
5253 u32 reset_needed = 0;
5254 int status;
5255 u32 i, j;
5256
5257 orig_flags = READ_ONCE(pf->flags);
5258 new_flags = orig_flags;
5259
5260 for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5261 const struct i40e_priv_flags *priv_flags;
5262
5263 priv_flags = &i40e_gstrings_priv_flags[i];
5264
5265 if (flags & BIT(i))
5266 new_flags |= priv_flags->flag;
5267 else
5268 new_flags &= ~(priv_flags->flag);
5269
5270 /* If this is a read-only flag, it can't be changed */
5271 if (priv_flags->read_only &&
5272 ((orig_flags ^ new_flags) & ~BIT(i)))
5273 return -EOPNOTSUPP;
5274 }
5275
5276 if (pf->hw.pf_id != 0)
5277 goto flags_complete;
5278
5279 for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5280 const struct i40e_priv_flags *priv_flags;
5281
5282 priv_flags = &i40e_gl_gstrings_priv_flags[j];
5283
5284 if (flags & BIT(i + j))
5285 new_flags |= priv_flags->flag;
5286 else
5287 new_flags &= ~(priv_flags->flag);
5288
5289 /* If this is a read-only flag, it can't be changed */
5290 if (priv_flags->read_only &&
5291 ((orig_flags ^ new_flags) & ~BIT(i)))
5292 return -EOPNOTSUPP;
5293 }
5294
5295flags_complete:
5296 changed_flags = orig_flags ^ new_flags;
5297
5298 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP)
5299 reset_needed = I40E_PF_RESET_AND_REBUILD_FLAG;
5300 if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
5301 I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED))
5302 reset_needed = BIT(__I40E_PF_RESET_REQUESTED);
5303
5304 /* Before we finalize any flag changes, we need to perform some
5305 * checks to ensure that the changes are supported and safe.
5306 */
5307
5308 /* ATR eviction is not supported on all devices */
5309 if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
5310 !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
5311 return -EOPNOTSUPP;
5312
5313 /* If the driver detected FW LLDP was disabled on init, this flag could
5314 * be set, however we do not support _changing_ the flag:
5315 * - on XL710 if NPAR is enabled or FW API version < 1.7
5316 * - on X722 with FW API version < 1.6
5317 * There are situations where older FW versions/NPAR enabled PFs could
5318 * disable LLDP, however we _must_ not allow the user to enable/disable
5319 * LLDP with this flag on unsupported FW versions.
5320 */
5321 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5322 if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) {
5323 dev_warn(&pf->pdev->dev,
5324 "Device does not support changing FW LLDP\n");
5325 return -EOPNOTSUPP;
5326 }
5327 }
5328
5329 if (changed_flags & I40E_FLAG_RS_FEC &&
5330 pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5331 pf->hw.device_id != I40E_DEV_ID_25G_B) {
5332 dev_warn(&pf->pdev->dev,
5333 "Device does not support changing FEC configuration\n");
5334 return -EOPNOTSUPP;
5335 }
5336
5337 if (changed_flags & I40E_FLAG_BASE_R_FEC &&
5338 pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5339 pf->hw.device_id != I40E_DEV_ID_25G_B &&
5340 pf->hw.device_id != I40E_DEV_ID_KX_X722) {
5341 dev_warn(&pf->pdev->dev,
5342 "Device does not support changing FEC configuration\n");
5343 return -EOPNOTSUPP;
5344 }
5345
5346 /* Process any additional changes needed as a result of flag changes.
5347 * The changed_flags value reflects the list of bits that were
5348 * changed in the code above.
5349 */
5350
5351 /* Flush current ATR settings if ATR was disabled */
5352 if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
5353 !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5354 set_bit(nr: __I40E_FD_ATR_AUTO_DISABLED, addr: pf->state);
5355 set_bit(nr: __I40E_FD_FLUSH_REQUESTED, addr: pf->state);
5356 }
5357
5358 if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
5359 u16 sw_flags = 0, valid_flags = 0;
5360 int ret;
5361
5362 if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
5363 sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5364 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5365 ret = i40e_aq_set_switch_config(hw: &pf->hw, flags: sw_flags, valid_flags,
5366 mode: 0, NULL);
5367 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
5368 dev_info(&pf->pdev->dev,
5369 "couldn't set switch config bits, err %pe aq_err %s\n",
5370 ERR_PTR(ret),
5371 i40e_aq_str(&pf->hw,
5372 pf->hw.aq.asq_last_status));
5373 /* not a fatal problem, just keep going */
5374 }
5375 }
5376
5377 if ((changed_flags & I40E_FLAG_RS_FEC) ||
5378 (changed_flags & I40E_FLAG_BASE_R_FEC)) {
5379 u8 fec_cfg = 0;
5380
5381 if (new_flags & I40E_FLAG_RS_FEC &&
5382 new_flags & I40E_FLAG_BASE_R_FEC) {
5383 fec_cfg = I40E_AQ_SET_FEC_AUTO;
5384 } else if (new_flags & I40E_FLAG_RS_FEC) {
5385 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
5386 I40E_AQ_SET_FEC_ABILITY_RS);
5387 } else if (new_flags & I40E_FLAG_BASE_R_FEC) {
5388 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
5389 I40E_AQ_SET_FEC_ABILITY_KR);
5390 }
5391 if (i40e_set_fec_cfg(netdev: dev, fec_cfg))
5392 dev_warn(&pf->pdev->dev, "Cannot change FEC config\n");
5393 }
5394
5395 if ((changed_flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5396 (orig_flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)) {
5397 dev_err(&pf->pdev->dev,
5398 "Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)\n");
5399 return -EOPNOTSUPP;
5400 }
5401
5402 if ((changed_flags & I40E_FLAG_VF_VLAN_PRUNING) &&
5403 pf->num_alloc_vfs) {
5404 dev_warn(&pf->pdev->dev,
5405 "Changing vf-vlan-pruning flag while VF(s) are active is not supported\n");
5406 return -EOPNOTSUPP;
5407 }
5408
5409 if ((changed_flags & I40E_FLAG_LEGACY_RX) &&
5410 I40E_2K_TOO_SMALL_WITH_PADDING) {
5411 dev_warn(&pf->pdev->dev,
5412 "2k Rx buffer is too small to fit standard MTU and skb_shared_info\n");
5413 return -EOPNOTSUPP;
5414 }
5415
5416 if ((changed_flags & new_flags &
5417 I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5418 (new_flags & I40E_FLAG_MFP_ENABLED))
5419 dev_warn(&pf->pdev->dev,
5420 "Turning on link-down-on-close flag may affect other partitions\n");
5421
5422 if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5423 if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5424#ifdef CONFIG_I40E_DCB
5425 i40e_dcb_sw_default_config(pf);
5426#endif /* CONFIG_I40E_DCB */
5427 i40e_aq_cfg_lldp_mib_change_event(hw: &pf->hw, enable_update: false, NULL);
5428 i40e_aq_stop_lldp(hw: &pf->hw, shutdown_agent: true, persist: false, NULL);
5429 } else {
5430 status = i40e_aq_start_lldp(hw: &pf->hw, persist: false, NULL);
5431 if (status) {
5432 adq_err = pf->hw.aq.asq_last_status;
5433 switch (adq_err) {
5434 case I40E_AQ_RC_EEXIST:
5435 dev_warn(&pf->pdev->dev,
5436 "FW LLDP agent is already running\n");
5437 reset_needed = 0;
5438 break;
5439 case I40E_AQ_RC_EPERM:
5440 dev_warn(&pf->pdev->dev,
5441 "Device configuration forbids SW from starting the LLDP agent.\n");
5442 return -EINVAL;
5443 case I40E_AQ_RC_EAGAIN:
5444 dev_warn(&pf->pdev->dev,
5445 "Stop FW LLDP agent command is still being processed, please try again in a second.\n");
5446 return -EBUSY;
5447 default:
5448 dev_warn(&pf->pdev->dev,
5449 "Starting FW LLDP agent failed: error: %pe, %s\n",
5450 ERR_PTR(status),
5451 i40e_aq_str(&pf->hw,
5452 adq_err));
5453 return -EINVAL;
5454 }
5455 }
5456 }
5457 }
5458
5459 /* Now that we've checked to ensure that the new flags are valid, load
5460 * them into place. Since we only modify flags either (a) during
5461 * initialization or (b) while holding the RTNL lock, we don't need
5462 * anything fancy here.
5463 */
5464 pf->flags = new_flags;
5465
5466 /* Issue reset to cause things to take effect, as additional bits
5467 * are added we will need to create a mask of bits requiring reset
5468 */
5469 if (reset_needed)
5470 i40e_do_reset(pf, reset_flags: reset_needed, lock_acquired: true);
5471
5472 return 0;
5473}
5474
5475/**
5476 * i40e_get_module_info - get (Q)SFP+ module type info
5477 * @netdev: network interface device structure
5478 * @modinfo: module EEPROM size and layout information structure
5479 **/
5480static int i40e_get_module_info(struct net_device *netdev,
5481 struct ethtool_modinfo *modinfo)
5482{
5483 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
5484 struct i40e_vsi *vsi = np->vsi;
5485 struct i40e_pf *pf = vsi->back;
5486 struct i40e_hw *hw = &pf->hw;
5487 u32 sff8472_comp = 0;
5488 u32 sff8472_swap = 0;
5489 u32 sff8636_rev = 0;
5490 u32 type = 0;
5491 int status;
5492
5493 /* Check if firmware supports reading module EEPROM. */
5494 if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) {
5495 netdev_err(dev: vsi->netdev, format: "Module EEPROM memory read not supported. Please update the NVM image.\n");
5496 return -EINVAL;
5497 }
5498
5499 status = i40e_update_link_info(hw);
5500 if (status)
5501 return -EIO;
5502
5503 if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) {
5504 netdev_err(dev: vsi->netdev, format: "Cannot read module EEPROM memory. No module connected.\n");
5505 return -EINVAL;
5506 }
5507
5508 type = hw->phy.link_info.module_type[0];
5509
5510 switch (type) {
5511 case I40E_MODULE_TYPE_SFP:
5512 status = i40e_aq_get_phy_register(hw,
5513 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5514 I40E_I2C_EEPROM_DEV_ADDR, true,
5515 I40E_MODULE_SFF_8472_COMP,
5516 &sff8472_comp, NULL);
5517 if (status)
5518 return -EIO;
5519
5520 status = i40e_aq_get_phy_register(hw,
5521 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5522 I40E_I2C_EEPROM_DEV_ADDR, true,
5523 I40E_MODULE_SFF_8472_SWAP,
5524 &sff8472_swap, NULL);
5525 if (status)
5526 return -EIO;
5527
5528 /* Check if the module requires address swap to access
5529 * the other EEPROM memory page.
5530 */
5531 if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
5532 netdev_warn(dev: vsi->netdev, format: "Module address swap to access page 0xA2 is not supported.\n");
5533 modinfo->type = ETH_MODULE_SFF_8079;
5534 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5535 } else if (sff8472_comp == 0x00) {
5536 /* Module is not SFF-8472 compliant */
5537 modinfo->type = ETH_MODULE_SFF_8079;
5538 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5539 } else if (!(sff8472_swap & I40E_MODULE_SFF_DDM_IMPLEMENTED)) {
5540 /* Module is SFF-8472 compliant but doesn't implement
5541 * Digital Diagnostic Monitoring (DDM).
5542 */
5543 modinfo->type = ETH_MODULE_SFF_8079;
5544 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5545 } else {
5546 modinfo->type = ETH_MODULE_SFF_8472;
5547 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
5548 }
5549 break;
5550 case I40E_MODULE_TYPE_QSFP_PLUS:
5551 /* Read from memory page 0. */
5552 status = i40e_aq_get_phy_register(hw,
5553 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5554 0, true,
5555 I40E_MODULE_REVISION_ADDR,
5556 &sff8636_rev, NULL);
5557 if (status)
5558 return -EIO;
5559 /* Determine revision compliance byte */
5560 if (sff8636_rev > 0x02) {
5561 /* Module is SFF-8636 compliant */
5562 modinfo->type = ETH_MODULE_SFF_8636;
5563 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5564 } else {
5565 modinfo->type = ETH_MODULE_SFF_8436;
5566 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5567 }
5568 break;
5569 case I40E_MODULE_TYPE_QSFP28:
5570 modinfo->type = ETH_MODULE_SFF_8636;
5571 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5572 break;
5573 default:
5574 netdev_err(dev: vsi->netdev, format: "Module type unrecognized\n");
5575 return -EINVAL;
5576 }
5577 return 0;
5578}
5579
5580/**
5581 * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
5582 * @netdev: network interface device structure
5583 * @ee: EEPROM dump request structure
5584 * @data: buffer to be filled with EEPROM contents
5585 **/
5586static int i40e_get_module_eeprom(struct net_device *netdev,
5587 struct ethtool_eeprom *ee,
5588 u8 *data)
5589{
5590 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
5591 struct i40e_vsi *vsi = np->vsi;
5592 struct i40e_pf *pf = vsi->back;
5593 struct i40e_hw *hw = &pf->hw;
5594 bool is_sfp = false;
5595 u32 value = 0;
5596 int status;
5597 int i;
5598
5599 if (!ee || !ee->len || !data)
5600 return -EINVAL;
5601
5602 if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
5603 is_sfp = true;
5604
5605 for (i = 0; i < ee->len; i++) {
5606 u32 offset = i + ee->offset;
5607 u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
5608
5609 /* Check if we need to access the other memory page */
5610 if (is_sfp) {
5611 if (offset >= ETH_MODULE_SFF_8079_LEN) {
5612 offset -= ETH_MODULE_SFF_8079_LEN;
5613 addr = I40E_I2C_EEPROM_DEV_ADDR2;
5614 }
5615 } else {
5616 while (offset >= ETH_MODULE_SFF_8436_LEN) {
5617 /* Compute memory page number and offset. */
5618 offset -= ETH_MODULE_SFF_8436_LEN / 2;
5619 addr++;
5620 }
5621 }
5622
5623 status = i40e_aq_get_phy_register(hw,
5624 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5625 addr, true, offset, &value, NULL);
5626 if (status)
5627 return -EIO;
5628 data[i] = value;
5629 }
5630 return 0;
5631}
5632
5633static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
5634{
5635 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
5636 struct i40e_aq_get_phy_abilities_resp phy_cfg;
5637 struct i40e_vsi *vsi = np->vsi;
5638 struct i40e_pf *pf = vsi->back;
5639 struct i40e_hw *hw = &pf->hw;
5640 int status = 0;
5641
5642 /* Get initial PHY capabilities */
5643 status = i40e_aq_get_phy_capabilities(hw, qualified_modules: false, report_init: true, abilities: &phy_cfg, NULL);
5644 if (status)
5645 return -EAGAIN;
5646
5647 /* Check whether NIC configuration is compatible with Energy Efficient
5648 * Ethernet (EEE) mode.
5649 */
5650 if (phy_cfg.eee_capability == 0)
5651 return -EOPNOTSUPP;
5652
5653 edata->supported = SUPPORTED_Autoneg;
5654 edata->lp_advertised = edata->supported;
5655
5656 /* Get current configuration */
5657 status = i40e_aq_get_phy_capabilities(hw, qualified_modules: false, report_init: false, abilities: &phy_cfg, NULL);
5658 if (status)
5659 return -EAGAIN;
5660
5661 edata->advertised = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U;
5662 edata->eee_enabled = !!edata->advertised;
5663 edata->tx_lpi_enabled = pf->stats.tx_lpi_status;
5664
5665 edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status;
5666
5667 return 0;
5668}
5669
5670static int i40e_is_eee_param_supported(struct net_device *netdev,
5671 struct ethtool_eee *edata)
5672{
5673 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
5674 struct i40e_vsi *vsi = np->vsi;
5675 struct i40e_pf *pf = vsi->back;
5676 struct i40e_ethtool_not_used {
5677 u32 value;
5678 const char *name;
5679 } param[] = {
5680 {edata->advertised & ~SUPPORTED_Autoneg, "advertise"},
5681 {edata->tx_lpi_timer, "tx-timer"},
5682 {edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"}
5683 };
5684 int i;
5685
5686 for (i = 0; i < ARRAY_SIZE(param); i++) {
5687 if (param[i].value) {
5688 netdev_info(dev: netdev,
5689 format: "EEE setting %s not supported\n",
5690 param[i].name);
5691 return -EOPNOTSUPP;
5692 }
5693 }
5694
5695 return 0;
5696}
5697
5698static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
5699{
5700 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
5701 struct i40e_aq_get_phy_abilities_resp abilities;
5702 struct i40e_aq_set_phy_config config;
5703 struct i40e_vsi *vsi = np->vsi;
5704 struct i40e_pf *pf = vsi->back;
5705 struct i40e_hw *hw = &pf->hw;
5706 __le16 eee_capability;
5707 int status = 0;
5708
5709 /* Deny parameters we don't support */
5710 if (i40e_is_eee_param_supported(netdev, edata))
5711 return -EOPNOTSUPP;
5712
5713 /* Get initial PHY capabilities */
5714 status = i40e_aq_get_phy_capabilities(hw, qualified_modules: false, report_init: true, abilities: &abilities,
5715 NULL);
5716 if (status)
5717 return -EAGAIN;
5718
5719 /* Check whether NIC configuration is compatible with Energy Efficient
5720 * Ethernet (EEE) mode.
5721 */
5722 if (abilities.eee_capability == 0)
5723 return -EOPNOTSUPP;
5724
5725 /* Cache initial EEE capability */
5726 eee_capability = abilities.eee_capability;
5727
5728 /* Get current PHY configuration */
5729 status = i40e_aq_get_phy_capabilities(hw, qualified_modules: false, report_init: false, abilities: &abilities,
5730 NULL);
5731 if (status)
5732 return -EAGAIN;
5733
5734 /* Cache current PHY configuration */
5735 config.phy_type = abilities.phy_type;
5736 config.phy_type_ext = abilities.phy_type_ext;
5737 config.link_speed = abilities.link_speed;
5738 config.abilities = abilities.abilities |
5739 I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
5740 config.eeer = abilities.eeer_val;
5741 config.low_power_ctrl = abilities.d3_lpan;
5742 config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
5743 I40E_AQ_PHY_FEC_CONFIG_MASK;
5744
5745 /* Set desired EEE state */
5746 if (edata->eee_enabled) {
5747 config.eee_capability = eee_capability;
5748 config.eeer |= cpu_to_le32(I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5749 } else {
5750 config.eee_capability = 0;
5751 config.eeer &= cpu_to_le32(~I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5752 }
5753
5754 /* Apply modified PHY configuration */
5755 status = i40e_aq_set_phy_config(hw, config: &config, NULL);
5756 if (status)
5757 return -EAGAIN;
5758
5759 return 0;
5760}
5761
5762static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = {
5763 .get_drvinfo = i40e_get_drvinfo,
5764 .set_eeprom = i40e_set_eeprom,
5765 .get_eeprom_len = i40e_get_eeprom_len,
5766 .get_eeprom = i40e_get_eeprom,
5767};
5768
5769static const struct ethtool_ops i40e_ethtool_ops = {
5770 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
5771 ETHTOOL_COALESCE_MAX_FRAMES_IRQ |
5772 ETHTOOL_COALESCE_USE_ADAPTIVE |
5773 ETHTOOL_COALESCE_RX_USECS_HIGH |
5774 ETHTOOL_COALESCE_TX_USECS_HIGH,
5775 .get_drvinfo = i40e_get_drvinfo,
5776 .get_regs_len = i40e_get_regs_len,
5777 .get_regs = i40e_get_regs,
5778 .nway_reset = i40e_nway_reset,
5779 .get_link = ethtool_op_get_link,
5780 .get_wol = i40e_get_wol,
5781 .set_wol = i40e_set_wol,
5782 .set_eeprom = i40e_set_eeprom,
5783 .get_eeprom_len = i40e_get_eeprom_len,
5784 .get_eeprom = i40e_get_eeprom,
5785 .get_ringparam = i40e_get_ringparam,
5786 .set_ringparam = i40e_set_ringparam,
5787 .get_pauseparam = i40e_get_pauseparam,
5788 .set_pauseparam = i40e_set_pauseparam,
5789 .get_msglevel = i40e_get_msglevel,
5790 .set_msglevel = i40e_set_msglevel,
5791 .get_rxnfc = i40e_get_rxnfc,
5792 .set_rxnfc = i40e_set_rxnfc,
5793 .self_test = i40e_diag_test,
5794 .get_strings = i40e_get_strings,
5795 .get_eee = i40e_get_eee,
5796 .set_eee = i40e_set_eee,
5797 .set_phys_id = i40e_set_phys_id,
5798 .get_sset_count = i40e_get_sset_count,
5799 .get_ethtool_stats = i40e_get_ethtool_stats,
5800 .get_coalesce = i40e_get_coalesce,
5801 .set_coalesce = i40e_set_coalesce,
5802 .get_rxfh_key_size = i40e_get_rxfh_key_size,
5803 .get_rxfh_indir_size = i40e_get_rxfh_indir_size,
5804 .get_rxfh = i40e_get_rxfh,
5805 .set_rxfh = i40e_set_rxfh,
5806 .get_channels = i40e_get_channels,
5807 .set_channels = i40e_set_channels,
5808 .get_module_info = i40e_get_module_info,
5809 .get_module_eeprom = i40e_get_module_eeprom,
5810 .get_ts_info = i40e_get_ts_info,
5811 .get_priv_flags = i40e_get_priv_flags,
5812 .set_priv_flags = i40e_set_priv_flags,
5813 .get_per_queue_coalesce = i40e_get_per_queue_coalesce,
5814 .set_per_queue_coalesce = i40e_set_per_queue_coalesce,
5815 .get_link_ksettings = i40e_get_link_ksettings,
5816 .set_link_ksettings = i40e_set_link_ksettings,
5817 .get_fecparam = i40e_get_fec_param,
5818 .set_fecparam = i40e_set_fec_param,
5819 .flash_device = i40e_ddp_flash,
5820};
5821
5822void i40e_set_ethtool_ops(struct net_device *netdev)
5823{
5824 struct i40e_netdev_priv *np = netdev_priv(dev: netdev);
5825 struct i40e_pf *pf = np->vsi->back;
5826
5827 if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
5828 netdev->ethtool_ops = &i40e_ethtool_ops;
5829 else
5830 netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops;
5831}
5832

source code of linux/drivers/net/ethernet/intel/i40e/i40e_ethtool.c