1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /**************************************************************************** |
3 | * Driver for Solarflare network controllers and boards |
4 | * Copyright 2005-2006 Fen Systems Ltd. |
5 | * Copyright 2005-2013 Solarflare Communications Inc. |
6 | */ |
7 | |
8 | /* Common definitions for all Efx net driver code */ |
9 | |
10 | #ifndef EFX_NET_DRIVER_H |
11 | #define EFX_NET_DRIVER_H |
12 | |
13 | #include <linux/netdevice.h> |
14 | #include <linux/etherdevice.h> |
15 | #include <linux/ethtool.h> |
16 | #include <linux/if_vlan.h> |
17 | #include <linux/timer.h> |
18 | #include <linux/mdio.h> |
19 | #include <linux/list.h> |
20 | #include <linux/pci.h> |
21 | #include <linux/device.h> |
22 | #include <linux/highmem.h> |
23 | #include <linux/workqueue.h> |
24 | #include <linux/mutex.h> |
25 | #include <linux/rwsem.h> |
26 | #include <linux/vmalloc.h> |
27 | #include <linux/mtd/mtd.h> |
28 | #include <net/busy_poll.h> |
29 | #include <net/xdp.h> |
30 | #include <net/netevent.h> |
31 | |
32 | #include "enum.h" |
33 | #include "bitfield.h" |
34 | #include "filter.h" |
35 | |
36 | /************************************************************************** |
37 | * |
38 | * Build definitions |
39 | * |
40 | **************************************************************************/ |
41 | |
42 | #ifdef DEBUG |
43 | #define EFX_WARN_ON_ONCE_PARANOID(x) WARN_ON_ONCE(x) |
44 | #define EFX_WARN_ON_PARANOID(x) WARN_ON(x) |
45 | #else |
46 | #define EFX_WARN_ON_ONCE_PARANOID(x) do {} while (0) |
47 | #define EFX_WARN_ON_PARANOID(x) do {} while (0) |
48 | #endif |
49 | |
50 | /************************************************************************** |
51 | * |
52 | * Efx data structures |
53 | * |
54 | **************************************************************************/ |
55 | |
56 | #define EFX_MAX_CHANNELS 32U |
57 | #define EFX_MAX_RX_QUEUES EFX_MAX_CHANNELS |
58 | #define 0 |
59 | #define 1 |
60 | #define 2 |
61 | #define 3U |
62 | |
63 | /* Checksum generation is a per-queue option in hardware, so each |
64 | * queue visible to the networking core is backed by two hardware TX |
65 | * queues. */ |
66 | #define EFX_MAX_TX_TC 2 |
67 | #define EFX_MAX_CORE_TX_QUEUES (EFX_MAX_TX_TC * EFX_MAX_CHANNELS) |
68 | #define EFX_TXQ_TYPE_OUTER_CSUM 1 /* Outer checksum offload */ |
69 | #define EFX_TXQ_TYPE_INNER_CSUM 2 /* Inner checksum offload */ |
70 | #define EFX_TXQ_TYPES 4 |
71 | #define EFX_MAX_TXQ_PER_CHANNEL 4 |
72 | #define EFX_MAX_TX_QUEUES (EFX_MAX_TXQ_PER_CHANNEL * EFX_MAX_CHANNELS) |
73 | |
74 | /* Maximum possible MTU the driver supports */ |
75 | #define EFX_MAX_MTU (9 * 1024) |
76 | |
77 | /* Minimum MTU, from RFC791 (IP) */ |
78 | #define EFX_MIN_MTU 68 |
79 | |
80 | /* Maximum total header length for TSOv2 */ |
81 | #define EFX_TSO2_MAX_HDRLEN 208 |
82 | |
83 | /* Size of an RX scatter buffer. Small enough to pack 2 into a 4K page, |
84 | * and should be a multiple of the cache line size. |
85 | */ |
86 | #define EFX_RX_USR_BUF_SIZE (2048 - 256) |
87 | |
88 | /* If possible, we should ensure cache line alignment at start and end |
89 | * of every buffer. Otherwise, we just need to ensure 4-byte |
90 | * alignment of the network header. |
91 | */ |
92 | #if NET_IP_ALIGN == 0 |
93 | #define EFX_RX_BUF_ALIGNMENT L1_CACHE_BYTES |
94 | #else |
95 | #define EFX_RX_BUF_ALIGNMENT 4 |
96 | #endif |
97 | |
98 | /* Non-standard XDP_PACKET_HEADROOM and tailroom to satisfy XDP_REDIRECT and |
99 | * still fit two standard MTU size packets into a single 4K page. |
100 | */ |
101 | #define EFX_XDP_HEADROOM 128 |
102 | #define EFX_XDP_TAILROOM SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) |
103 | |
104 | /* Forward declare Precision Time Protocol (PTP) support structure. */ |
105 | struct efx_ptp_data; |
106 | struct hwtstamp_config; |
107 | |
108 | struct efx_self_tests; |
109 | |
110 | /** |
111 | * struct efx_buffer - A general-purpose DMA buffer |
112 | * @addr: host base address of the buffer |
113 | * @dma_addr: DMA base address of the buffer |
114 | * @len: Buffer length, in bytes |
115 | * |
116 | * The NIC uses these buffers for its interrupt status registers and |
117 | * MAC stats dumps. |
118 | */ |
119 | struct efx_buffer { |
120 | void *addr; |
121 | dma_addr_t dma_addr; |
122 | unsigned int len; |
123 | }; |
124 | |
125 | /** |
126 | * struct efx_tx_buffer - buffer state for a TX descriptor |
127 | * @skb: When @flags & %EFX_TX_BUF_SKB, the associated socket buffer to be |
128 | * freed when descriptor completes |
129 | * @xdpf: When @flags & %EFX_TX_BUF_XDP, the XDP frame information; its @data |
130 | * member is the associated buffer to drop a page reference on. |
131 | * @option: When @flags & %EFX_TX_BUF_OPTION, an EF10-specific option |
132 | * descriptor. |
133 | * @dma_addr: DMA address of the fragment. |
134 | * @flags: Flags for allocation and DMA mapping type |
135 | * @len: Length of this fragment. |
136 | * This field is zero when the queue slot is empty. |
137 | * @unmap_len: Length of this fragment to unmap |
138 | * @dma_offset: Offset of @dma_addr from the address of the backing DMA mapping. |
139 | * Only valid if @unmap_len != 0. |
140 | */ |
141 | struct efx_tx_buffer { |
142 | union { |
143 | const struct sk_buff *skb; |
144 | struct xdp_frame *xdpf; |
145 | }; |
146 | union { |
147 | efx_qword_t option; /* EF10 */ |
148 | dma_addr_t dma_addr; |
149 | }; |
150 | unsigned short flags; |
151 | unsigned short len; |
152 | unsigned short unmap_len; |
153 | unsigned short dma_offset; |
154 | }; |
155 | #define EFX_TX_BUF_CONT 1 /* not last descriptor of packet */ |
156 | #define EFX_TX_BUF_SKB 2 /* buffer is last part of skb */ |
157 | #define EFX_TX_BUF_MAP_SINGLE 8 /* buffer was mapped with dma_map_single() */ |
158 | #define EFX_TX_BUF_OPTION 0x10 /* empty buffer for option descriptor */ |
159 | #define EFX_TX_BUF_XDP 0x20 /* buffer was sent with XDP */ |
160 | #define EFX_TX_BUF_TSO_V3 0x40 /* empty buffer for a TSO_V3 descriptor */ |
161 | #define EFX_TX_BUF_EFV 0x100 /* buffer was sent from representor */ |
162 | |
163 | /** |
164 | * struct efx_tx_queue - An Efx TX queue |
165 | * |
166 | * This is a ring buffer of TX fragments. |
167 | * Since the TX completion path always executes on the same |
168 | * CPU and the xmit path can operate on different CPUs, |
169 | * performance is increased by ensuring that the completion |
170 | * path and the xmit path operate on different cache lines. |
171 | * This is particularly important if the xmit path is always |
172 | * executing on one CPU which is different from the completion |
173 | * path. There is also a cache line for members which are |
174 | * read but not written on the fast path. |
175 | * |
176 | * @efx: The associated Efx NIC |
177 | * @queue: DMA queue number |
178 | * @label: Label for TX completion events. |
179 | * Is our index within @channel->tx_queue array. |
180 | * @type: configuration type of this TX queue. A bitmask of %EFX_TXQ_TYPE_* flags. |
181 | * @tso_version: Version of TSO in use for this queue. |
182 | * @tso_encap: Is encapsulated TSO supported? Supported in TSOv2 on 8000 series. |
183 | * @channel: The associated channel |
184 | * @core_txq: The networking core TX queue structure |
185 | * @buffer: The software buffer ring |
186 | * @cb_page: Array of pages of copy buffers. Carved up according to |
187 | * %EFX_TX_CB_ORDER into %EFX_TX_CB_SIZE-sized chunks. |
188 | * @txd: The hardware descriptor ring |
189 | * @ptr_mask: The size of the ring minus 1. |
190 | * @piobuf: PIO buffer region for this TX queue (shared with its partner). |
191 | * Size of the region is efx_piobuf_size. |
192 | * @piobuf_offset: Buffer offset to be specified in PIO descriptors |
193 | * @initialised: Has hardware queue been initialised? |
194 | * @timestamping: Is timestamping enabled for this channel? |
195 | * @xdp_tx: Is this an XDP tx queue? |
196 | * @read_count: Current read pointer. |
197 | * This is the number of buffers that have been removed from both rings. |
198 | * @old_write_count: The value of @write_count when last checked. |
199 | * This is here for performance reasons. The xmit path will |
200 | * only get the up-to-date value of @write_count if this |
201 | * variable indicates that the queue is empty. This is to |
202 | * avoid cache-line ping-pong between the xmit path and the |
203 | * completion path. |
204 | * @merge_events: Number of TX merged completion events |
205 | * @completed_timestamp_major: Top part of the most recent tx timestamp. |
206 | * @completed_timestamp_minor: Low part of the most recent tx timestamp. |
207 | * @insert_count: Current insert pointer |
208 | * This is the number of buffers that have been added to the |
209 | * software ring. |
210 | * @write_count: Current write pointer |
211 | * This is the number of buffers that have been added to the |
212 | * hardware ring. |
213 | * @packet_write_count: Completable write pointer |
214 | * This is the write pointer of the last packet written. |
215 | * Normally this will equal @write_count, but as option descriptors |
216 | * don't produce completion events, they won't update this. |
217 | * Filled in iff @efx->type->option_descriptors; only used for PIO. |
218 | * Thus, this is only written and used on EF10. |
219 | * @old_read_count: The value of read_count when last checked. |
220 | * This is here for performance reasons. The xmit path will |
221 | * only get the up-to-date value of read_count if this |
222 | * variable indicates that the queue is full. This is to |
223 | * avoid cache-line ping-pong between the xmit path and the |
224 | * completion path. |
225 | * @tso_bursts: Number of times TSO xmit invoked by kernel |
226 | * @tso_long_headers: Number of packets with headers too long for standard |
227 | * blocks |
228 | * @tso_packets: Number of packets via the TSO xmit path |
229 | * @tso_fallbacks: Number of times TSO fallback used |
230 | * @pushes: Number of times the TX push feature has been used |
231 | * @pio_packets: Number of times the TX PIO feature has been used |
232 | * @xmit_pending: Are any packets waiting to be pushed to the NIC |
233 | * @cb_packets: Number of times the TX copybreak feature has been used |
234 | * @notify_count: Count of notified descriptors to the NIC |
235 | * @empty_read_count: If the completion path has seen the queue as empty |
236 | * and the transmission path has not yet checked this, the value of |
237 | * @read_count bitwise-added to %EFX_EMPTY_COUNT_VALID; otherwise 0. |
238 | */ |
239 | struct efx_tx_queue { |
240 | /* Members which don't change on the fast path */ |
241 | struct efx_nic *efx ____cacheline_aligned_in_smp; |
242 | unsigned int queue; |
243 | unsigned int label; |
244 | unsigned int type; |
245 | unsigned int tso_version; |
246 | bool tso_encap; |
247 | struct efx_channel *channel; |
248 | struct netdev_queue *core_txq; |
249 | struct efx_tx_buffer *buffer; |
250 | struct efx_buffer *cb_page; |
251 | struct efx_buffer txd; |
252 | unsigned int ptr_mask; |
253 | void __iomem *piobuf; |
254 | unsigned int piobuf_offset; |
255 | bool initialised; |
256 | bool timestamping; |
257 | bool xdp_tx; |
258 | |
259 | /* Members used mainly on the completion path */ |
260 | unsigned int read_count ____cacheline_aligned_in_smp; |
261 | unsigned int old_write_count; |
262 | unsigned int merge_events; |
263 | unsigned int bytes_compl; |
264 | unsigned int pkts_compl; |
265 | u32 completed_timestamp_major; |
266 | u32 completed_timestamp_minor; |
267 | |
268 | /* Members used only on the xmit path */ |
269 | unsigned int insert_count ____cacheline_aligned_in_smp; |
270 | unsigned int write_count; |
271 | unsigned int packet_write_count; |
272 | unsigned int old_read_count; |
273 | unsigned int tso_bursts; |
274 | unsigned int ; |
275 | unsigned int tso_packets; |
276 | unsigned int tso_fallbacks; |
277 | unsigned int pushes; |
278 | unsigned int pio_packets; |
279 | bool xmit_pending; |
280 | unsigned int cb_packets; |
281 | unsigned int notify_count; |
282 | /* Statistics to supplement MAC stats */ |
283 | unsigned long tx_packets; |
284 | |
285 | /* Members shared between paths and sometimes updated */ |
286 | unsigned int empty_read_count ____cacheline_aligned_in_smp; |
287 | #define EFX_EMPTY_COUNT_VALID 0x80000000 |
288 | atomic_t flush_outstanding; |
289 | }; |
290 | |
291 | #define EFX_TX_CB_ORDER 7 |
292 | #define EFX_TX_CB_SIZE (1 << EFX_TX_CB_ORDER) - NET_IP_ALIGN |
293 | |
294 | /** |
295 | * struct efx_rx_buffer - An Efx RX data buffer |
296 | * @dma_addr: DMA base address of the buffer |
297 | * @page: The associated page buffer. |
298 | * Will be %NULL if the buffer slot is currently free. |
299 | * @page_offset: If pending: offset in @page of DMA base address. |
300 | * If completed: offset in @page of Ethernet header. |
301 | * @len: If pending: length for DMA descriptor. |
302 | * If completed: received length, excluding hash prefix. |
303 | * @flags: Flags for buffer and packet state. These are only set on the |
304 | * first buffer of a scattered packet. |
305 | */ |
306 | struct efx_rx_buffer { |
307 | dma_addr_t dma_addr; |
308 | struct page *page; |
309 | u16 page_offset; |
310 | u16 len; |
311 | u16 flags; |
312 | }; |
313 | #define EFX_RX_BUF_LAST_IN_PAGE 0x0001 |
314 | #define EFX_RX_PKT_CSUMMED 0x0002 |
315 | #define EFX_RX_PKT_DISCARD 0x0004 |
316 | #define EFX_RX_PKT_TCP 0x0040 |
317 | #define EFX_RX_PKT_PREFIX_LEN 0x0080 /* length is in prefix only */ |
318 | #define EFX_RX_PKT_CSUM_LEVEL 0x0200 |
319 | |
320 | /** |
321 | * struct efx_rx_page_state - Page-based rx buffer state |
322 | * |
323 | * Inserted at the start of every page allocated for receive buffers. |
324 | * Used to facilitate sharing dma mappings between recycled rx buffers |
325 | * and those passed up to the kernel. |
326 | * |
327 | * @dma_addr: The dma address of this page. |
328 | */ |
329 | struct efx_rx_page_state { |
330 | dma_addr_t dma_addr; |
331 | |
332 | unsigned int __pad[] ____cacheline_aligned; |
333 | }; |
334 | |
335 | /** |
336 | * struct efx_rx_queue - An Efx RX queue |
337 | * @efx: The associated Efx NIC |
338 | * @core_index: Index of network core RX queue. Will be >= 0 iff this |
339 | * is associated with a real RX queue. |
340 | * @buffer: The software buffer ring |
341 | * @rxd: The hardware descriptor ring |
342 | * @ptr_mask: The size of the ring minus 1. |
343 | * @refill_enabled: Enable refill whenever fill level is low |
344 | * @flush_pending: Set when a RX flush is pending. Has the same lifetime as |
345 | * @rxq_flush_pending. |
346 | * @grant_credits: Posted RX descriptors need to be granted to the MAE with |
347 | * %MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS. For %EFX_EXTRA_CHANNEL_TC, |
348 | * and only supported on EF100. |
349 | * @added_count: Number of buffers added to the receive queue. |
350 | * @notified_count: Number of buffers given to NIC (<= @added_count). |
351 | * @granted_count: Number of buffers granted to the MAE (<= @notified_count). |
352 | * @removed_count: Number of buffers removed from the receive queue. |
353 | * @scatter_n: Used by NIC specific receive code. |
354 | * @scatter_len: Used by NIC specific receive code. |
355 | * @page_ring: The ring to store DMA mapped pages for reuse. |
356 | * @page_add: Counter to calculate the write pointer for the recycle ring. |
357 | * @page_remove: Counter to calculate the read pointer for the recycle ring. |
358 | * @page_recycle_count: The number of pages that have been recycled. |
359 | * @page_recycle_failed: The number of pages that couldn't be recycled because |
360 | * the kernel still held a reference to them. |
361 | * @page_recycle_full: The number of pages that were released because the |
362 | * recycle ring was full. |
363 | * @page_ptr_mask: The number of pages in the RX recycle ring minus 1. |
364 | * @max_fill: RX descriptor maximum fill level (<= ring size) |
365 | * @fast_fill_trigger: RX descriptor fill level that will trigger a fast fill |
366 | * (<= @max_fill) |
367 | * @min_fill: RX descriptor minimum non-zero fill level. |
368 | * This records the minimum fill level observed when a ring |
369 | * refill was triggered. |
370 | * @recycle_count: RX buffer recycle counter. |
371 | * @slow_fill: Timer used to defer efx_nic_generate_fill_event(). |
372 | * @grant_work: workitem used to grant credits to the MAE if @grant_credits |
373 | * @xdp_rxq_info: XDP specific RX queue information. |
374 | * @xdp_rxq_info_valid: Is xdp_rxq_info valid data?. |
375 | */ |
376 | struct efx_rx_queue { |
377 | struct efx_nic *efx; |
378 | int core_index; |
379 | struct efx_rx_buffer *buffer; |
380 | struct efx_buffer rxd; |
381 | unsigned int ptr_mask; |
382 | bool refill_enabled; |
383 | bool flush_pending; |
384 | bool grant_credits; |
385 | |
386 | unsigned int added_count; |
387 | unsigned int notified_count; |
388 | unsigned int granted_count; |
389 | unsigned int removed_count; |
390 | unsigned int scatter_n; |
391 | unsigned int scatter_len; |
392 | struct page **page_ring; |
393 | unsigned int page_add; |
394 | unsigned int page_remove; |
395 | unsigned int page_recycle_count; |
396 | unsigned int page_recycle_failed; |
397 | unsigned int page_recycle_full; |
398 | unsigned int page_ptr_mask; |
399 | unsigned int max_fill; |
400 | unsigned int fast_fill_trigger; |
401 | unsigned int min_fill; |
402 | unsigned int min_overfill; |
403 | unsigned int recycle_count; |
404 | struct timer_list slow_fill; |
405 | unsigned int slow_fill_count; |
406 | struct work_struct grant_work; |
407 | /* Statistics to supplement MAC stats */ |
408 | unsigned long rx_packets; |
409 | struct xdp_rxq_info xdp_rxq_info; |
410 | bool xdp_rxq_info_valid; |
411 | }; |
412 | |
413 | enum efx_sync_events_state { |
414 | SYNC_EVENTS_DISABLED = 0, |
415 | SYNC_EVENTS_QUIESCENT, |
416 | SYNC_EVENTS_REQUESTED, |
417 | SYNC_EVENTS_VALID, |
418 | }; |
419 | |
420 | /** |
421 | * struct efx_channel - An Efx channel |
422 | * |
423 | * A channel comprises an event queue, at least one TX queue, at least |
424 | * one RX queue, and an associated tasklet for processing the event |
425 | * queue. |
426 | * |
427 | * @efx: Associated Efx NIC |
428 | * @channel: Channel instance number |
429 | * @type: Channel type definition |
430 | * @eventq_init: Event queue initialised flag |
431 | * @enabled: Channel enabled indicator |
432 | * @irq: IRQ number (MSI and MSI-X only) |
433 | * @irq_moderation_us: IRQ moderation value (in microseconds) |
434 | * @napi_dev: Net device used with NAPI |
435 | * @napi_str: NAPI control structure |
436 | * @state: state for NAPI vs busy polling |
437 | * @state_lock: lock protecting @state |
438 | * @eventq: Event queue buffer |
439 | * @eventq_mask: Event queue pointer mask |
440 | * @eventq_read_ptr: Event queue read pointer |
441 | * @event_test_cpu: Last CPU to handle interrupt or test event for this channel |
442 | * @irq_count: Number of IRQs since last adaptive moderation decision |
443 | * @irq_mod_score: IRQ moderation score |
444 | * @rfs_filter_count: number of accelerated RFS filters currently in place; |
445 | * equals the count of @rps_flow_id slots filled |
446 | * @rfs_last_expiry: value of jiffies last time some accelerated RFS filters |
447 | * were checked for expiry |
448 | * @rfs_expire_index: next accelerated RFS filter ID to check for expiry |
449 | * @n_rfs_succeeded: number of successful accelerated RFS filter insertions |
450 | * @n_rfs_failed: number of failed accelerated RFS filter insertions |
451 | * @filter_work: Work item for efx_filter_rfs_expire() |
452 | * @rps_flow_id: Flow IDs of filters allocated for accelerated RFS, |
453 | * indexed by filter ID |
454 | * @n_rx_tobe_disc: Count of RX_TOBE_DISC errors |
455 | * @n_rx_ip_hdr_chksum_err: Count of RX IP header checksum errors |
456 | * @n_rx_tcp_udp_chksum_err: Count of RX TCP and UDP checksum errors |
457 | * @n_rx_mcast_mismatch: Count of unmatched multicast frames |
458 | * @n_rx_frm_trunc: Count of RX_FRM_TRUNC errors |
459 | * @n_rx_overlength: Count of RX_OVERLENGTH errors |
460 | * @n_skbuff_leaks: Count of skbuffs leaked due to RX overrun |
461 | * @n_rx_nodesc_trunc: Number of RX packets truncated and then dropped due to |
462 | * lack of descriptors |
463 | * @n_rx_merge_events: Number of RX merged completion events |
464 | * @n_rx_merge_packets: Number of RX packets completed by merged events |
465 | * @n_rx_xdp_drops: Count of RX packets intentionally dropped due to XDP |
466 | * @n_rx_xdp_bad_drops: Count of RX packets dropped due to XDP errors |
467 | * @n_rx_xdp_tx: Count of RX packets retransmitted due to XDP |
468 | * @n_rx_xdp_redirect: Count of RX packets redirected to a different NIC by XDP |
469 | * @n_rx_mport_bad: Count of RX packets dropped because their ingress mport was |
470 | * not recognised |
471 | * @rx_pkt_n_frags: Number of fragments in next packet to be delivered by |
472 | * __efx_rx_packet(), or zero if there is none |
473 | * @rx_pkt_index: Ring index of first buffer for next packet to be delivered |
474 | * by __efx_rx_packet(), if @rx_pkt_n_frags != 0 |
475 | * @rx_list: list of SKBs from current RX, awaiting processing |
476 | * @rx_queue: RX queue for this channel |
477 | * @tx_queue: TX queues for this channel |
478 | * @tx_queue_by_type: pointers into @tx_queue, or %NULL, indexed by txq type |
479 | * @sync_events_state: Current state of sync events on this channel |
480 | * @sync_timestamp_major: Major part of the last ptp sync event |
481 | * @sync_timestamp_minor: Minor part of the last ptp sync event |
482 | */ |
483 | struct efx_channel { |
484 | struct efx_nic *efx; |
485 | int channel; |
486 | const struct efx_channel_type *type; |
487 | bool eventq_init; |
488 | bool enabled; |
489 | int irq; |
490 | unsigned int irq_moderation_us; |
491 | struct net_device *napi_dev; |
492 | struct napi_struct napi_str; |
493 | #ifdef CONFIG_NET_RX_BUSY_POLL |
494 | unsigned long busy_poll_state; |
495 | #endif |
496 | struct efx_buffer eventq; |
497 | unsigned int eventq_mask; |
498 | unsigned int eventq_read_ptr; |
499 | int event_test_cpu; |
500 | |
501 | unsigned int irq_count; |
502 | unsigned int irq_mod_score; |
503 | #ifdef CONFIG_RFS_ACCEL |
504 | unsigned int rfs_filter_count; |
505 | unsigned int rfs_last_expiry; |
506 | unsigned int rfs_expire_index; |
507 | unsigned int n_rfs_succeeded; |
508 | unsigned int n_rfs_failed; |
509 | struct delayed_work filter_work; |
510 | #define RPS_FLOW_ID_INVALID 0xFFFFFFFF |
511 | u32 *rps_flow_id; |
512 | #endif |
513 | |
514 | unsigned int n_rx_tobe_disc; |
515 | unsigned int n_rx_ip_hdr_chksum_err; |
516 | unsigned int n_rx_tcp_udp_chksum_err; |
517 | unsigned int n_rx_outer_ip_hdr_chksum_err; |
518 | unsigned int n_rx_outer_tcp_udp_chksum_err; |
519 | unsigned int n_rx_inner_ip_hdr_chksum_err; |
520 | unsigned int n_rx_inner_tcp_udp_chksum_err; |
521 | unsigned int n_rx_eth_crc_err; |
522 | unsigned int n_rx_mcast_mismatch; |
523 | unsigned int n_rx_frm_trunc; |
524 | unsigned int n_rx_overlength; |
525 | unsigned int n_skbuff_leaks; |
526 | unsigned int n_rx_nodesc_trunc; |
527 | unsigned int n_rx_merge_events; |
528 | unsigned int n_rx_merge_packets; |
529 | unsigned int n_rx_xdp_drops; |
530 | unsigned int n_rx_xdp_bad_drops; |
531 | unsigned int n_rx_xdp_tx; |
532 | unsigned int n_rx_xdp_redirect; |
533 | unsigned int n_rx_mport_bad; |
534 | |
535 | unsigned int rx_pkt_n_frags; |
536 | unsigned int rx_pkt_index; |
537 | |
538 | struct list_head *rx_list; |
539 | |
540 | struct efx_rx_queue rx_queue; |
541 | struct efx_tx_queue tx_queue[EFX_MAX_TXQ_PER_CHANNEL]; |
542 | struct efx_tx_queue *tx_queue_by_type[EFX_TXQ_TYPES]; |
543 | |
544 | enum efx_sync_events_state sync_events_state; |
545 | u32 sync_timestamp_major; |
546 | u32 sync_timestamp_minor; |
547 | }; |
548 | |
549 | /** |
550 | * struct efx_msi_context - Context for each MSI |
551 | * @efx: The associated NIC |
552 | * @index: Index of the channel/IRQ |
553 | * @name: Name of the channel/IRQ |
554 | * |
555 | * Unlike &struct efx_channel, this is never reallocated and is always |
556 | * safe for the IRQ handler to access. |
557 | */ |
558 | struct efx_msi_context { |
559 | struct efx_nic *efx; |
560 | unsigned int index; |
561 | char name[IFNAMSIZ + 6]; |
562 | }; |
563 | |
564 | /** |
565 | * struct efx_channel_type - distinguishes traffic and extra channels |
566 | * @handle_no_channel: Handle failure to allocate an extra channel |
567 | * @pre_probe: Set up extra state prior to initialisation |
568 | * @start: called early in efx_start_channels() |
569 | * @stop: called early in efx_stop_channels() |
570 | * @post_remove: Tear down extra state after finalisation, if allocated. |
571 | * May be called on channels that have not been probed. |
572 | * @get_name: Generate the channel's name (used for its IRQ handler) |
573 | * @copy: Copy the channel state prior to reallocation. May be %NULL if |
574 | * reallocation is not supported. |
575 | * @receive_skb: Handle an skb ready to be passed to netif_receive_skb() |
576 | * @receive_raw: Handle an RX buffer ready to be passed to __efx_rx_packet() |
577 | * @want_txqs: Determine whether this channel should have TX queues |
578 | * created. If %NULL, TX queues are not created. |
579 | * @keep_eventq: Flag for whether event queue should be kept initialised |
580 | * while the device is stopped |
581 | * @want_pio: Flag for whether PIO buffers should be linked to this |
582 | * channel's TX queues. |
583 | */ |
584 | struct efx_channel_type { |
585 | void (*handle_no_channel)(struct efx_nic *); |
586 | int (*pre_probe)(struct efx_channel *); |
587 | int (*start)(struct efx_channel *); |
588 | void (*stop)(struct efx_channel *); |
589 | void (*post_remove)(struct efx_channel *); |
590 | void (*get_name)(struct efx_channel *, char *buf, size_t len); |
591 | struct efx_channel *(*copy)(const struct efx_channel *); |
592 | bool (*receive_skb)(struct efx_channel *, struct sk_buff *); |
593 | bool (*receive_raw)(struct efx_rx_queue *, u32); |
594 | bool (*want_txqs)(struct efx_channel *); |
595 | bool keep_eventq; |
596 | bool want_pio; |
597 | }; |
598 | |
599 | enum efx_led_mode { |
600 | EFX_LED_OFF = 0, |
601 | EFX_LED_ON = 1, |
602 | EFX_LED_DEFAULT = 2 |
603 | }; |
604 | |
605 | #define STRING_TABLE_LOOKUP(val, member) \ |
606 | ((val) < member ## _max) ? member ## _names[val] : "(invalid)" |
607 | |
608 | extern const char *const efx_loopback_mode_names[]; |
609 | extern const unsigned int efx_loopback_mode_max; |
610 | #define LOOPBACK_MODE(efx) \ |
611 | STRING_TABLE_LOOKUP((efx)->loopback_mode, efx_loopback_mode) |
612 | |
613 | enum efx_int_mode { |
614 | /* Be careful if altering to correct macro below */ |
615 | EFX_INT_MODE_MSIX = 0, |
616 | EFX_INT_MODE_MSI = 1, |
617 | EFX_INT_MODE_LEGACY = 2, |
618 | EFX_INT_MODE_MAX /* Insert any new items before this */ |
619 | }; |
620 | #define EFX_INT_MODE_USE_MSI(x) (((x)->interrupt_mode) <= EFX_INT_MODE_MSI) |
621 | |
622 | enum nic_state { |
623 | STATE_UNINIT = 0, /* device being probed/removed */ |
624 | STATE_PROBED, /* hardware probed */ |
625 | STATE_NET_DOWN, /* netdev registered */ |
626 | STATE_NET_UP, /* ready for traffic */ |
627 | STATE_DISABLED, /* device disabled due to hardware errors */ |
628 | |
629 | STATE_RECOVERY = 0x100,/* recovering from PCI error */ |
630 | STATE_FROZEN = 0x200, /* frozen by power management */ |
631 | }; |
632 | |
633 | static inline bool efx_net_active(enum nic_state state) |
634 | { |
635 | return state == STATE_NET_DOWN || state == STATE_NET_UP; |
636 | } |
637 | |
638 | static inline bool efx_frozen(enum nic_state state) |
639 | { |
640 | return state & STATE_FROZEN; |
641 | } |
642 | |
643 | static inline bool efx_recovering(enum nic_state state) |
644 | { |
645 | return state & STATE_RECOVERY; |
646 | } |
647 | |
648 | static inline enum nic_state efx_freeze(enum nic_state state) |
649 | { |
650 | WARN_ON(!efx_net_active(state)); |
651 | return state | STATE_FROZEN; |
652 | } |
653 | |
654 | static inline enum nic_state efx_thaw(enum nic_state state) |
655 | { |
656 | WARN_ON(!efx_frozen(state)); |
657 | return state & ~STATE_FROZEN; |
658 | } |
659 | |
660 | static inline enum nic_state efx_recover(enum nic_state state) |
661 | { |
662 | WARN_ON(!efx_net_active(state)); |
663 | return state | STATE_RECOVERY; |
664 | } |
665 | |
666 | static inline enum nic_state efx_recovered(enum nic_state state) |
667 | { |
668 | WARN_ON(!efx_recovering(state)); |
669 | return state & ~STATE_RECOVERY; |
670 | } |
671 | |
672 | /* Forward declaration */ |
673 | struct efx_nic; |
674 | |
675 | /* Pseudo bit-mask flow control field */ |
676 | #define EFX_FC_RX FLOW_CTRL_RX |
677 | #define EFX_FC_TX FLOW_CTRL_TX |
678 | #define EFX_FC_AUTO 4 |
679 | |
680 | /** |
681 | * struct efx_link_state - Current state of the link |
682 | * @up: Link is up |
683 | * @fd: Link is full-duplex |
684 | * @fc: Actual flow control flags |
685 | * @speed: Link speed (Mbps) |
686 | */ |
687 | struct efx_link_state { |
688 | bool up; |
689 | bool fd; |
690 | u8 fc; |
691 | unsigned int speed; |
692 | }; |
693 | |
694 | static inline bool efx_link_state_equal(const struct efx_link_state *left, |
695 | const struct efx_link_state *right) |
696 | { |
697 | return left->up == right->up && left->fd == right->fd && |
698 | left->fc == right->fc && left->speed == right->speed; |
699 | } |
700 | |
701 | /** |
702 | * enum efx_phy_mode - PHY operating mode flags |
703 | * @PHY_MODE_NORMAL: on and should pass traffic |
704 | * @PHY_MODE_TX_DISABLED: on with TX disabled |
705 | * @PHY_MODE_LOW_POWER: set to low power through MDIO |
706 | * @PHY_MODE_OFF: switched off through external control |
707 | * @PHY_MODE_SPECIAL: on but will not pass traffic |
708 | */ |
709 | enum efx_phy_mode { |
710 | PHY_MODE_NORMAL = 0, |
711 | PHY_MODE_TX_DISABLED = 1, |
712 | PHY_MODE_LOW_POWER = 2, |
713 | PHY_MODE_OFF = 4, |
714 | PHY_MODE_SPECIAL = 8, |
715 | }; |
716 | |
717 | static inline bool efx_phy_mode_disabled(enum efx_phy_mode mode) |
718 | { |
719 | return !!(mode & ~PHY_MODE_TX_DISABLED); |
720 | } |
721 | |
722 | /** |
723 | * struct efx_hw_stat_desc - Description of a hardware statistic |
724 | * @name: Name of the statistic as visible through ethtool, or %NULL if |
725 | * it should not be exposed |
726 | * @dma_width: Width in bits (0 for non-DMA statistics) |
727 | * @offset: Offset within stats (ignored for non-DMA statistics) |
728 | */ |
729 | struct efx_hw_stat_desc { |
730 | const char *name; |
731 | u16 dma_width; |
732 | u16 offset; |
733 | }; |
734 | |
735 | struct vfdi_status; |
736 | |
737 | /* The reserved RSS context value */ |
738 | #define 0xffffffff |
739 | /** |
740 | * struct efx_rss_context - A user-defined RSS context for filtering |
741 | * @list: node of linked list on which this struct is stored |
742 | * @context_id: the RSS_CONTEXT_ID returned by MC firmware, or |
743 | * %EFX_MCDI_RSS_CONTEXT_INVALID if this context is not present on the NIC. |
744 | * For Siena, 0 if RSS is active, else %EFX_MCDI_RSS_CONTEXT_INVALID. |
745 | * @user_id: the rss_context ID exposed to userspace over ethtool. |
746 | * @rx_hash_udp_4tuple: UDP 4-tuple hashing enabled |
747 | * @rx_hash_key: Toeplitz hash key for this RSS context |
748 | * @indir_table: Indirection table for this RSS context |
749 | */ |
750 | struct { |
751 | struct list_head ; |
752 | u32 ; |
753 | u32 ; |
754 | bool ; |
755 | u8 [40]; |
756 | u32 [128]; |
757 | }; |
758 | |
759 | #ifdef CONFIG_RFS_ACCEL |
760 | /* Order of these is important, since filter_id >= %EFX_ARFS_FILTER_ID_PENDING |
761 | * is used to test if filter does or will exist. |
762 | */ |
763 | #define EFX_ARFS_FILTER_ID_PENDING -1 |
764 | #define EFX_ARFS_FILTER_ID_ERROR -2 |
765 | #define EFX_ARFS_FILTER_ID_REMOVING -3 |
766 | /** |
767 | * struct efx_arfs_rule - record of an ARFS filter and its IDs |
768 | * @node: linkage into hash table |
769 | * @spec: details of the filter (used as key for hash table). Use efx->type to |
770 | * determine which member to use. |
771 | * @rxq_index: channel to which the filter will steer traffic. |
772 | * @arfs_id: filter ID which was returned to ARFS |
773 | * @filter_id: index in software filter table. May be |
774 | * %EFX_ARFS_FILTER_ID_PENDING if filter was not inserted yet, |
775 | * %EFX_ARFS_FILTER_ID_ERROR if filter insertion failed, or |
776 | * %EFX_ARFS_FILTER_ID_REMOVING if expiry is currently removing the filter. |
777 | */ |
778 | struct efx_arfs_rule { |
779 | struct hlist_node node; |
780 | struct efx_filter_spec spec; |
781 | u16 rxq_index; |
782 | u16 arfs_id; |
783 | s32 filter_id; |
784 | }; |
785 | |
786 | /* Size chosen so that the table is one page (4kB) */ |
787 | #define EFX_ARFS_HASH_TABLE_SIZE 512 |
788 | |
789 | /** |
790 | * struct efx_async_filter_insertion - Request to asynchronously insert a filter |
791 | * @net_dev: Reference to the netdevice |
792 | * @spec: The filter to insert |
793 | * @work: Workitem for this request |
794 | * @rxq_index: Identifies the channel for which this request was made |
795 | * @flow_id: Identifies the kernel-side flow for which this request was made |
796 | */ |
797 | struct efx_async_filter_insertion { |
798 | struct net_device *net_dev; |
799 | struct efx_filter_spec spec; |
800 | struct work_struct work; |
801 | u16 rxq_index; |
802 | u32 flow_id; |
803 | }; |
804 | |
805 | /* Maximum number of ARFS workitems that may be in flight on an efx_nic */ |
806 | #define EFX_RPS_MAX_IN_FLIGHT 8 |
807 | #endif /* CONFIG_RFS_ACCEL */ |
808 | |
809 | enum efx_xdp_tx_queues_mode { |
810 | EFX_XDP_TX_QUEUES_DEDICATED, /* one queue per core, locking not needed */ |
811 | EFX_XDP_TX_QUEUES_SHARED, /* each queue used by more than 1 core */ |
812 | EFX_XDP_TX_QUEUES_BORROWED /* queues borrowed from net stack */ |
813 | }; |
814 | |
815 | struct efx_mae; |
816 | |
817 | /** |
818 | * struct efx_nic - an Efx NIC |
819 | * @name: Device name (net device name or bus id before net device registered) |
820 | * @pci_dev: The PCI device |
821 | * @node: List node for maintaning primary/secondary function lists |
822 | * @primary: &struct efx_nic instance for the primary function of this |
823 | * controller. May be the same structure, and may be %NULL if no |
824 | * primary function is bound. Serialised by rtnl_lock. |
825 | * @secondary_list: List of &struct efx_nic instances for the secondary PCI |
826 | * functions of the controller, if this is for the primary function. |
827 | * Serialised by rtnl_lock. |
828 | * @type: Controller type attributes |
829 | * @legacy_irq: IRQ number |
830 | * @workqueue: Workqueue for port reconfigures and the HW monitor. |
831 | * Work items do not hold and must not acquire RTNL. |
832 | * @workqueue_name: Name of workqueue |
833 | * @reset_work: Scheduled reset workitem |
834 | * @membase_phys: Memory BAR value as physical address |
835 | * @membase: Memory BAR value |
836 | * @vi_stride: step between per-VI registers / memory regions |
837 | * @interrupt_mode: Interrupt mode |
838 | * @timer_quantum_ns: Interrupt timer quantum, in nanoseconds |
839 | * @timer_max_ns: Interrupt timer maximum value, in nanoseconds |
840 | * @irq_rx_adaptive: Adaptive IRQ moderation enabled for RX event queues |
841 | * @irqs_hooked: Channel interrupts are hooked |
842 | * @irq_rx_mod_step_us: Step size for IRQ moderation for RX event queues |
843 | * @irq_rx_moderation_us: IRQ moderation time for RX event queues |
844 | * @msg_enable: Log message enable flags |
845 | * @state: Device state number (%STATE_*). Serialised by the rtnl_lock. |
846 | * @reset_pending: Bitmask for pending resets |
847 | * @tx_queue: TX DMA queues |
848 | * @rx_queue: RX DMA queues |
849 | * @channel: Channels |
850 | * @msi_context: Context for each MSI |
851 | * @extra_channel_types: Types of extra (non-traffic) channels that |
852 | * should be allocated for this NIC |
853 | * @mae: Details of the Match Action Engine |
854 | * @xdp_tx_queue_count: Number of entries in %xdp_tx_queues. |
855 | * @xdp_tx_queues: Array of pointers to tx queues used for XDP transmit. |
856 | * @xdp_txq_queues_mode: XDP TX queues sharing strategy. |
857 | * @rxq_entries: Size of receive queues requested by user. |
858 | * @txq_entries: Size of transmit queues requested by user. |
859 | * @txq_stop_thresh: TX queue fill level at or above which we stop it. |
860 | * @txq_wake_thresh: TX queue fill level at or below which we wake it. |
861 | * @tx_dc_base: Base qword address in SRAM of TX queue descriptor caches |
862 | * @rx_dc_base: Base qword address in SRAM of RX queue descriptor caches |
863 | * @sram_lim_qw: Qword address limit of SRAM |
864 | * @n_channels: Number of channels in use |
865 | * @n_rx_channels: Number of channels used for RX (= number of RX queues) |
866 | * @n_tx_channels: Number of channels used for TX |
867 | * @n_extra_tx_channels: Number of extra channels with TX queues |
868 | * @tx_queues_per_channel: number of TX queues probed on each channel |
869 | * @n_xdp_channels: Number of channels used for XDP TX |
870 | * @xdp_channel_offset: Offset of zeroth channel used for XPD TX. |
871 | * @xdp_tx_per_channel: Max number of TX queues on an XDP TX channel. |
872 | * @rx_ip_align: RX DMA address offset to have IP header aligned in |
873 | * in accordance with NET_IP_ALIGN |
874 | * @rx_dma_len: Current maximum RX DMA length |
875 | * @rx_buffer_order: Order (log2) of number of pages for each RX buffer |
876 | * @rx_buffer_truesize: Amortised allocation size of an RX buffer, |
877 | * for use in sk_buff::truesize |
878 | * @rx_prefix_size: Size of RX prefix before packet data |
879 | * @rx_packet_hash_offset: Offset of RX flow hash from start of packet data |
880 | * (valid only if @rx_prefix_size != 0; always negative) |
881 | * @rx_packet_len_offset: Offset of RX packet length from start of packet data |
882 | * (valid only for NICs that set %EFX_RX_PKT_PREFIX_LEN; always negative) |
883 | * @rx_packet_ts_offset: Offset of timestamp from start of packet data |
884 | * (valid only if channel->sync_timestamps_enabled; always negative) |
885 | * @rx_scatter: Scatter mode enabled for receives |
886 | * @rss_context: Main RSS context. Its @list member is the head of the list of |
887 | * RSS contexts created by user requests |
888 | * @rss_lock: Protects custom RSS context software state in @rss_context.list |
889 | * @vport_id: The function's vport ID, only relevant for PFs |
890 | * @int_error_count: Number of internal errors seen recently |
891 | * @int_error_expire: Time at which error count will be expired |
892 | * @must_realloc_vis: Flag: VIs have yet to be reallocated after MC reboot |
893 | * @irq_soft_enabled: Are IRQs soft-enabled? If not, IRQ handler will |
894 | * acknowledge but do nothing else. |
895 | * @irq_status: Interrupt status buffer |
896 | * @irq_zero_count: Number of legacy IRQs seen with queue flags == 0 |
897 | * @irq_level: IRQ level/index for IRQs not triggered by an event queue |
898 | * @selftest_work: Work item for asynchronous self-test |
899 | * @mtd_list: List of MTDs attached to the NIC |
900 | * @nic_data: Hardware dependent state |
901 | * @mcdi: Management-Controller-to-Driver Interface state |
902 | * @mac_lock: MAC access lock. Protects @port_enabled, @phy_mode, |
903 | * efx_monitor() and efx_reconfigure_port() |
904 | * @port_enabled: Port enabled indicator. |
905 | * Serialises efx_stop_all(), efx_start_all(), efx_monitor() and |
906 | * efx_mac_work() with kernel interfaces. Safe to read under any |
907 | * one of the rtnl_lock, mac_lock, or netif_tx_lock, but all three must |
908 | * be held to modify it. |
909 | * @port_initialized: Port initialized? |
910 | * @net_dev: Operating system network device. Consider holding the rtnl lock |
911 | * @fixed_features: Features which cannot be turned off |
912 | * @num_mac_stats: Number of MAC stats reported by firmware (MAC_STATS_NUM_STATS |
913 | * field of %MC_CMD_GET_CAPABILITIES_V4 response, or %MC_CMD_MAC_NSTATS) |
914 | * @stats_buffer: DMA buffer for statistics |
915 | * @phy_type: PHY type |
916 | * @phy_data: PHY private data (including PHY-specific stats) |
917 | * @mdio: PHY MDIO interface |
918 | * @mdio_bus: PHY MDIO bus ID (only used by Siena) |
919 | * @phy_mode: PHY operating mode. Serialised by @mac_lock. |
920 | * @link_advertising: Autonegotiation advertising flags |
921 | * @fec_config: Forward Error Correction configuration flags. For bit positions |
922 | * see &enum ethtool_fec_config_bits. |
923 | * @link_state: Current state of the link |
924 | * @n_link_state_changes: Number of times the link has changed state |
925 | * @wanted_fc: Wanted flow control flags |
926 | * @fc_disable: When non-zero flow control is disabled. Typically used to |
927 | * ensure that network back pressure doesn't delay dma queue flushes. |
928 | * Serialised by the rtnl lock. |
929 | * @mac_work: Work item for changing MAC promiscuity and multicast hash |
930 | * @loopback_mode: Loopback status |
931 | * @loopback_modes: Supported loopback mode bitmask |
932 | * @loopback_selftest: Offline self-test private state |
933 | * @xdp_prog: Current XDP programme for this interface |
934 | * @filter_sem: Filter table rw_semaphore, protects existence of @filter_state |
935 | * @filter_state: Architecture-dependent filter table state |
936 | * @rps_mutex: Protects RPS state of all channels |
937 | * @rps_slot_map: bitmap of in-flight entries in @rps_slot |
938 | * @rps_slot: array of ARFS insertion requests for efx_filter_rfs_work() |
939 | * @rps_hash_lock: Protects ARFS filter mapping state (@rps_hash_table and |
940 | * @rps_next_id). |
941 | * @rps_hash_table: Mapping between ARFS filters and their various IDs |
942 | * @rps_next_id: next arfs_id for an ARFS filter |
943 | * @active_queues: Count of RX and TX queues that haven't been flushed and drained. |
944 | * @rxq_flush_pending: Count of number of receive queues that need to be flushed. |
945 | * Decremented when the efx_flush_rx_queue() is called. |
946 | * @rxq_flush_outstanding: Count of number of RX flushes started but not yet |
947 | * completed (either success or failure). Not used when MCDI is used to |
948 | * flush receive queues. |
949 | * @flush_wq: wait queue used by efx_nic_flush_queues() to wait for flush completions. |
950 | * @vf_count: Number of VFs intended to be enabled. |
951 | * @vf_init_count: Number of VFs that have been fully initialised. |
952 | * @vi_scale: log2 number of vnics per VF. |
953 | * @vf_reps_lock: Protects vf_reps list |
954 | * @vf_reps: local VF reps |
955 | * @ptp_data: PTP state data |
956 | * @ptp_warned: has this NIC seen and warned about unexpected PTP events? |
957 | * @vpd_sn: Serial number read from VPD |
958 | * @xdp_rxq_info_failed: Have any of the rx queues failed to initialise their |
959 | * xdp_rxq_info structures? |
960 | * @netdev_notifier: Netdevice notifier. |
961 | * @netevent_notifier: Netevent notifier (for neighbour updates). |
962 | * @tc: state for TC offload (EF100). |
963 | * @devlink: reference to devlink structure owned by this device |
964 | * @dl_port: devlink port associated with the PF |
965 | * @mem_bar: The BAR that is mapped into membase. |
966 | * @reg_base: Offset from the start of the bar to the function control window. |
967 | * @monitor_work: Hardware monitor workitem |
968 | * @biu_lock: BIU (bus interface unit) lock |
969 | * @last_irq_cpu: Last CPU to handle a possible test interrupt. This |
970 | * field is used by efx_test_interrupts() to verify that an |
971 | * interrupt has occurred. |
972 | * @stats_lock: Statistics update lock. Must be held when calling |
973 | * efx_nic_type::{update,start,stop}_stats. |
974 | * @n_rx_noskb_drops: Count of RX packets dropped due to failure to allocate an skb |
975 | * |
976 | * This is stored in the private area of the &struct net_device. |
977 | */ |
978 | struct efx_nic { |
979 | /* The following fields should be written very rarely */ |
980 | |
981 | char name[IFNAMSIZ]; |
982 | struct list_head node; |
983 | struct efx_nic *primary; |
984 | struct list_head secondary_list; |
985 | struct pci_dev *pci_dev; |
986 | unsigned int port_num; |
987 | const struct efx_nic_type *type; |
988 | int legacy_irq; |
989 | bool eeh_disabled_legacy_irq; |
990 | struct workqueue_struct *workqueue; |
991 | char workqueue_name[16]; |
992 | struct work_struct reset_work; |
993 | resource_size_t membase_phys; |
994 | void __iomem *membase; |
995 | |
996 | unsigned int vi_stride; |
997 | |
998 | enum efx_int_mode interrupt_mode; |
999 | unsigned int timer_quantum_ns; |
1000 | unsigned int timer_max_ns; |
1001 | bool irq_rx_adaptive; |
1002 | bool irqs_hooked; |
1003 | unsigned int irq_mod_step_us; |
1004 | unsigned int irq_rx_moderation_us; |
1005 | u32 msg_enable; |
1006 | |
1007 | enum nic_state state; |
1008 | unsigned long reset_pending; |
1009 | |
1010 | struct efx_channel *channel[EFX_MAX_CHANNELS]; |
1011 | struct efx_msi_context msi_context[EFX_MAX_CHANNELS]; |
1012 | const struct efx_channel_type * |
1013 | [EFX_MAX_EXTRA_CHANNELS]; |
1014 | struct efx_mae *mae; |
1015 | |
1016 | unsigned int xdp_tx_queue_count; |
1017 | struct efx_tx_queue **xdp_tx_queues; |
1018 | enum efx_xdp_tx_queues_mode xdp_txq_queues_mode; |
1019 | |
1020 | unsigned rxq_entries; |
1021 | unsigned txq_entries; |
1022 | unsigned int txq_stop_thresh; |
1023 | unsigned int txq_wake_thresh; |
1024 | |
1025 | unsigned tx_dc_base; |
1026 | unsigned rx_dc_base; |
1027 | unsigned sram_lim_qw; |
1028 | |
1029 | unsigned int max_channels; |
1030 | unsigned int max_vis; |
1031 | unsigned int max_tx_channels; |
1032 | unsigned n_channels; |
1033 | unsigned n_rx_channels; |
1034 | unsigned ; |
1035 | unsigned tx_channel_offset; |
1036 | unsigned n_tx_channels; |
1037 | unsigned ; |
1038 | unsigned int tx_queues_per_channel; |
1039 | unsigned int n_xdp_channels; |
1040 | unsigned int xdp_channel_offset; |
1041 | unsigned int xdp_tx_per_channel; |
1042 | unsigned int rx_ip_align; |
1043 | unsigned int rx_dma_len; |
1044 | unsigned int rx_buffer_order; |
1045 | unsigned int rx_buffer_truesize; |
1046 | unsigned int rx_page_buf_step; |
1047 | unsigned int rx_bufs_per_page; |
1048 | unsigned int rx_pages_per_batch; |
1049 | unsigned int rx_prefix_size; |
1050 | int rx_packet_hash_offset; |
1051 | int rx_packet_len_offset; |
1052 | int rx_packet_ts_offset; |
1053 | bool rx_scatter; |
1054 | struct efx_rss_context ; |
1055 | struct mutex ; |
1056 | u32 vport_id; |
1057 | |
1058 | unsigned int_error_count; |
1059 | unsigned long int_error_expire; |
1060 | |
1061 | bool must_realloc_vis; |
1062 | bool irq_soft_enabled; |
1063 | struct efx_buffer irq_status; |
1064 | unsigned irq_zero_count; |
1065 | unsigned irq_level; |
1066 | struct delayed_work selftest_work; |
1067 | |
1068 | #ifdef CONFIG_SFC_MTD |
1069 | struct list_head mtd_list; |
1070 | #endif |
1071 | |
1072 | void *nic_data; |
1073 | struct efx_mcdi_data *mcdi; |
1074 | |
1075 | struct mutex mac_lock; |
1076 | struct work_struct mac_work; |
1077 | bool port_enabled; |
1078 | |
1079 | bool mc_bist_for_other_fn; |
1080 | bool port_initialized; |
1081 | struct net_device *net_dev; |
1082 | |
1083 | netdev_features_t fixed_features; |
1084 | |
1085 | u16 num_mac_stats; |
1086 | struct efx_buffer stats_buffer; |
1087 | u64 rx_nodesc_drops_total; |
1088 | u64 rx_nodesc_drops_while_down; |
1089 | bool rx_nodesc_drops_prev_state; |
1090 | |
1091 | unsigned int phy_type; |
1092 | void *phy_data; |
1093 | struct mdio_if_info mdio; |
1094 | unsigned int mdio_bus; |
1095 | enum efx_phy_mode phy_mode; |
1096 | |
1097 | __ETHTOOL_DECLARE_LINK_MODE_MASK(link_advertising); |
1098 | u32 fec_config; |
1099 | struct efx_link_state link_state; |
1100 | unsigned int n_link_state_changes; |
1101 | |
1102 | u8 wanted_fc; |
1103 | unsigned fc_disable; |
1104 | |
1105 | atomic_t rx_reset; |
1106 | enum efx_loopback_mode loopback_mode; |
1107 | u64 loopback_modes; |
1108 | |
1109 | void *loopback_selftest; |
1110 | /* We access loopback_selftest immediately before running XDP, |
1111 | * so we want them next to each other. |
1112 | */ |
1113 | struct bpf_prog __rcu *xdp_prog; |
1114 | |
1115 | struct rw_semaphore filter_sem; |
1116 | void *filter_state; |
1117 | #ifdef CONFIG_RFS_ACCEL |
1118 | struct mutex rps_mutex; |
1119 | unsigned long rps_slot_map; |
1120 | struct efx_async_filter_insertion rps_slot[EFX_RPS_MAX_IN_FLIGHT]; |
1121 | spinlock_t rps_hash_lock; |
1122 | struct hlist_head *rps_hash_table; |
1123 | u32 rps_next_id; |
1124 | #endif |
1125 | |
1126 | atomic_t active_queues; |
1127 | atomic_t rxq_flush_pending; |
1128 | atomic_t rxq_flush_outstanding; |
1129 | wait_queue_head_t flush_wq; |
1130 | |
1131 | #ifdef CONFIG_SFC_SRIOV |
1132 | unsigned vf_count; |
1133 | unsigned vf_init_count; |
1134 | unsigned vi_scale; |
1135 | #endif |
1136 | spinlock_t vf_reps_lock; |
1137 | struct list_head vf_reps; |
1138 | |
1139 | struct efx_ptp_data *ptp_data; |
1140 | bool ptp_warned; |
1141 | |
1142 | char *vpd_sn; |
1143 | bool xdp_rxq_info_failed; |
1144 | |
1145 | struct notifier_block netdev_notifier; |
1146 | struct notifier_block netevent_notifier; |
1147 | struct efx_tc_state *tc; |
1148 | |
1149 | struct devlink *devlink; |
1150 | struct devlink_port *dl_port; |
1151 | unsigned int mem_bar; |
1152 | u32 reg_base; |
1153 | |
1154 | /* The following fields may be written more often */ |
1155 | |
1156 | struct delayed_work monitor_work ____cacheline_aligned_in_smp; |
1157 | spinlock_t biu_lock; |
1158 | int last_irq_cpu; |
1159 | spinlock_t stats_lock; |
1160 | atomic_t n_rx_noskb_drops; |
1161 | }; |
1162 | |
1163 | /** |
1164 | * struct efx_probe_data - State after hardware probe |
1165 | * @pci_dev: The PCI device |
1166 | * @efx: Efx NIC details |
1167 | */ |
1168 | struct efx_probe_data { |
1169 | struct pci_dev *pci_dev; |
1170 | struct efx_nic efx; |
1171 | }; |
1172 | |
1173 | static inline struct efx_nic *efx_netdev_priv(struct net_device *dev) |
1174 | { |
1175 | struct efx_probe_data **probe_ptr = netdev_priv(dev); |
1176 | struct efx_probe_data *probe_data = *probe_ptr; |
1177 | |
1178 | return &probe_data->efx; |
1179 | } |
1180 | |
1181 | static inline int efx_dev_registered(struct efx_nic *efx) |
1182 | { |
1183 | return efx->net_dev->reg_state == NETREG_REGISTERED; |
1184 | } |
1185 | |
1186 | static inline unsigned int efx_port_num(struct efx_nic *efx) |
1187 | { |
1188 | return efx->port_num; |
1189 | } |
1190 | |
1191 | struct efx_mtd_partition { |
1192 | struct list_head node; |
1193 | struct mtd_info mtd; |
1194 | const char *dev_type_name; |
1195 | const char *type_name; |
1196 | char name[IFNAMSIZ + 20]; |
1197 | }; |
1198 | |
1199 | struct efx_udp_tunnel { |
1200 | #define TUNNEL_ENCAP_UDP_PORT_ENTRY_INVALID 0xffff |
1201 | u16 type; /* TUNNEL_ENCAP_UDP_PORT_ENTRY_foo, see mcdi_pcol.h */ |
1202 | __be16 port; |
1203 | }; |
1204 | |
1205 | /** |
1206 | * struct efx_nic_type - Efx device type definition |
1207 | * @mem_bar: Get the memory BAR |
1208 | * @mem_map_size: Get memory BAR mapped size |
1209 | * @probe: Probe the controller |
1210 | * @remove: Free resources allocated by probe() |
1211 | * @init: Initialise the controller |
1212 | * @dimension_resources: Dimension controller resources (buffer table, |
1213 | * and VIs once the available interrupt resources are clear) |
1214 | * @fini: Shut down the controller |
1215 | * @monitor: Periodic function for polling link state and hardware monitor |
1216 | * @map_reset_reason: Map ethtool reset reason to a reset method |
1217 | * @map_reset_flags: Map ethtool reset flags to a reset method, if possible |
1218 | * @reset: Reset the controller hardware and possibly the PHY. This will |
1219 | * be called while the controller is uninitialised. |
1220 | * @probe_port: Probe the MAC and PHY |
1221 | * @remove_port: Free resources allocated by probe_port() |
1222 | * @handle_global_event: Handle a "global" event (may be %NULL) |
1223 | * @fini_dmaq: Flush and finalise DMA queues (RX and TX queues) |
1224 | * @prepare_flr: Prepare for an FLR |
1225 | * @finish_flr: Clean up after an FLR |
1226 | * @describe_stats: Describe statistics for ethtool |
1227 | * @update_stats: Update statistics not provided by event handling. |
1228 | * Either argument may be %NULL. |
1229 | * @update_stats_atomic: Update statistics while in atomic context, if that |
1230 | * is more limiting than @update_stats. Otherwise, leave %NULL and |
1231 | * driver core will call @update_stats. |
1232 | * @start_stats: Start the regular fetching of statistics |
1233 | * @pull_stats: Pull stats from the NIC and wait until they arrive. |
1234 | * @stop_stats: Stop the regular fetching of statistics |
1235 | * @push_irq_moderation: Apply interrupt moderation value |
1236 | * @reconfigure_port: Push loopback/power/txdis changes to the MAC and PHY |
1237 | * @prepare_enable_fc_tx: Prepare MAC to enable pause frame TX (may be %NULL) |
1238 | * @reconfigure_mac: Push MAC address, MTU, flow control and filter settings |
1239 | * to the hardware. Serialised by the mac_lock. |
1240 | * @check_mac_fault: Check MAC fault state. True if fault present. |
1241 | * @get_wol: Get WoL configuration from driver state |
1242 | * @set_wol: Push WoL configuration to the NIC |
1243 | * @resume_wol: Synchronise WoL state between driver and MC (e.g. after resume) |
1244 | * @get_fec_stats: Get standard FEC statistics. |
1245 | * @test_chip: Test registers. This is expected to reset the NIC. |
1246 | * @test_nvram: Test validity of NVRAM contents |
1247 | * @mcdi_request: Send an MCDI request with the given header and SDU. |
1248 | * The SDU length may be any value from 0 up to the protocol- |
1249 | * defined maximum, but its buffer will be padded to a multiple |
1250 | * of 4 bytes. |
1251 | * @mcdi_poll_response: Test whether an MCDI response is available. |
1252 | * @mcdi_read_response: Read the MCDI response PDU. The offset will |
1253 | * be a multiple of 4. The length may not be, but the buffer |
1254 | * will be padded so it is safe to round up. |
1255 | * @mcdi_poll_reboot: Test whether the MCDI has rebooted. If so, |
1256 | * return an appropriate error code for aborting any current |
1257 | * request; otherwise return 0. |
1258 | * @irq_enable_master: Enable IRQs on the NIC. Each event queue must |
1259 | * be separately enabled after this. |
1260 | * @irq_test_generate: Generate a test IRQ |
1261 | * @irq_disable_non_ev: Disable non-event IRQs on the NIC. Each event |
1262 | * queue must be separately disabled before this. |
1263 | * @irq_handle_msi: Handle MSI for a channel. The @dev_id argument is |
1264 | * a pointer to the &struct efx_msi_context for the channel. |
1265 | * @irq_handle_legacy: Handle legacy interrupt. The @dev_id argument |
1266 | * is a pointer to the &struct efx_nic. |
1267 | * @tx_probe: Allocate resources for TX queue (and select TXQ type) |
1268 | * @tx_init: Initialise TX queue on the NIC |
1269 | * @tx_remove: Free resources for TX queue |
1270 | * @tx_write: Write TX descriptors and doorbell |
1271 | * @tx_enqueue: Add an SKB to TX queue |
1272 | * @rx_push_rss_config: Write RSS hash key and indirection table to the NIC |
1273 | * @rx_pull_rss_config: Read RSS hash key and indirection table back from the NIC |
1274 | * @rx_push_rss_context_config: Write RSS hash key and indirection table for |
1275 | * user RSS context to the NIC |
1276 | * @rx_pull_rss_context_config: Read RSS hash key and indirection table for user |
1277 | * RSS context back from the NIC |
1278 | * @rx_probe: Allocate resources for RX queue |
1279 | * @rx_init: Initialise RX queue on the NIC |
1280 | * @rx_remove: Free resources for RX queue |
1281 | * @rx_write: Write RX descriptors and doorbell |
1282 | * @rx_defer_refill: Generate a refill reminder event |
1283 | * @rx_packet: Receive the queued RX buffer on a channel |
1284 | * @rx_buf_hash_valid: Determine whether the RX prefix contains a valid hash |
1285 | * @ev_probe: Allocate resources for event queue |
1286 | * @ev_init: Initialise event queue on the NIC |
1287 | * @ev_fini: Deinitialise event queue on the NIC |
1288 | * @ev_remove: Free resources for event queue |
1289 | * @ev_process: Process events for a queue, up to the given NAPI quota |
1290 | * @ev_read_ack: Acknowledge read events on a queue, rearming its IRQ |
1291 | * @ev_test_generate: Generate a test event |
1292 | * @filter_table_probe: Probe filter capabilities and set up filter software state |
1293 | * @filter_table_restore: Restore filters removed from hardware |
1294 | * @filter_table_remove: Remove filters from hardware and tear down software state |
1295 | * @filter_update_rx_scatter: Update filters after change to rx scatter setting |
1296 | * @filter_insert: add or replace a filter |
1297 | * @filter_remove_safe: remove a filter by ID, carefully |
1298 | * @filter_get_safe: retrieve a filter by ID, carefully |
1299 | * @filter_clear_rx: Remove all RX filters whose priority is less than or |
1300 | * equal to the given priority and is not %EFX_FILTER_PRI_AUTO |
1301 | * @filter_count_rx_used: Get the number of filters in use at a given priority |
1302 | * @filter_get_rx_id_limit: Get maximum value of a filter id, plus 1 |
1303 | * @filter_get_rx_ids: Get list of RX filters at a given priority |
1304 | * @filter_rfs_expire_one: Consider expiring a filter inserted for RFS. |
1305 | * This must check whether the specified table entry is used by RFS |
1306 | * and that rps_may_expire_flow() returns true for it. |
1307 | * @mtd_probe: Probe and add MTD partitions associated with this net device, |
1308 | * using efx_mtd_add() |
1309 | * @mtd_rename: Set an MTD partition name using the net device name |
1310 | * @mtd_read: Read from an MTD partition |
1311 | * @mtd_erase: Erase part of an MTD partition |
1312 | * @mtd_write: Write to an MTD partition |
1313 | * @mtd_sync: Wait for write-back to complete on MTD partition. This |
1314 | * also notifies the driver that a writer has finished using this |
1315 | * partition. |
1316 | * @ptp_write_host_time: Send host time to MC as part of sync protocol |
1317 | * @ptp_set_ts_sync_events: Enable or disable sync events for inline RX |
1318 | * timestamping, possibly only temporarily for the purposes of a reset. |
1319 | * @ptp_set_ts_config: Set hardware timestamp configuration. The flags |
1320 | * and tx_type will already have been validated but this operation |
1321 | * must validate and update rx_filter. |
1322 | * @get_phys_port_id: Get the underlying physical port id. |
1323 | * @set_mac_address: Set the MAC address of the device |
1324 | * @tso_versions: Returns mask of firmware-assisted TSO versions supported. |
1325 | * If %NULL, then device does not support any TSO version. |
1326 | * @udp_tnl_push_ports: Push the list of UDP tunnel ports to the NIC if required. |
1327 | * @udp_tnl_has_port: Check if a port has been added as UDP tunnel |
1328 | * @print_additional_fwver: Dump NIC-specific additional FW version info |
1329 | * @sensor_event: Handle a sensor event from MCDI |
1330 | * @rx_recycle_ring_size: Size of the RX recycle ring |
1331 | * @revision: Hardware architecture revision |
1332 | * @txd_ptr_tbl_base: TX descriptor ring base address |
1333 | * @rxd_ptr_tbl_base: RX descriptor ring base address |
1334 | * @buf_tbl_base: Buffer table base address |
1335 | * @evq_ptr_tbl_base: Event queue pointer table base address |
1336 | * @evq_rptr_tbl_base: Event queue read-pointer table base address |
1337 | * @max_dma_mask: Maximum possible DMA mask |
1338 | * @rx_prefix_size: Size of RX prefix before packet data |
1339 | * @rx_hash_offset: Offset of RX flow hash within prefix |
1340 | * @rx_ts_offset: Offset of timestamp within prefix |
1341 | * @rx_buffer_padding: Size of padding at end of RX packet |
1342 | * @can_rx_scatter: NIC is able to scatter packets to multiple buffers |
1343 | * @always_rx_scatter: NIC will always scatter packets to multiple buffers |
1344 | * @option_descriptors: NIC supports TX option descriptors |
1345 | * @min_interrupt_mode: Lowest capability interrupt mode supported |
1346 | * from &enum efx_int_mode. |
1347 | * @timer_period_max: Maximum period of interrupt timer (in ticks) |
1348 | * @offload_features: net_device feature flags for protocol offload |
1349 | * features implemented in hardware |
1350 | * @mcdi_max_ver: Maximum MCDI version supported |
1351 | * @hwtstamp_filters: Mask of hardware timestamp filter types supported |
1352 | */ |
1353 | struct efx_nic_type { |
1354 | bool is_vf; |
1355 | unsigned int (*mem_bar)(struct efx_nic *efx); |
1356 | unsigned int (*mem_map_size)(struct efx_nic *efx); |
1357 | int (*probe)(struct efx_nic *efx); |
1358 | void (*remove)(struct efx_nic *efx); |
1359 | int (*init)(struct efx_nic *efx); |
1360 | int (*dimension_resources)(struct efx_nic *efx); |
1361 | void (*fini)(struct efx_nic *efx); |
1362 | void (*monitor)(struct efx_nic *efx); |
1363 | enum reset_type (*map_reset_reason)(enum reset_type reason); |
1364 | int (*map_reset_flags)(u32 *flags); |
1365 | int (*reset)(struct efx_nic *efx, enum reset_type method); |
1366 | int (*probe_port)(struct efx_nic *efx); |
1367 | void (*remove_port)(struct efx_nic *efx); |
1368 | bool (*handle_global_event)(struct efx_channel *channel, efx_qword_t *); |
1369 | int (*fini_dmaq)(struct efx_nic *efx); |
1370 | void (*prepare_flr)(struct efx_nic *efx); |
1371 | void (*finish_flr)(struct efx_nic *efx); |
1372 | size_t (*describe_stats)(struct efx_nic *efx, u8 *names); |
1373 | size_t (*update_stats)(struct efx_nic *efx, u64 *full_stats, |
1374 | struct rtnl_link_stats64 *core_stats); |
1375 | size_t (*update_stats_atomic)(struct efx_nic *efx, u64 *full_stats, |
1376 | struct rtnl_link_stats64 *core_stats); |
1377 | void (*start_stats)(struct efx_nic *efx); |
1378 | void (*pull_stats)(struct efx_nic *efx); |
1379 | void (*stop_stats)(struct efx_nic *efx); |
1380 | void (*push_irq_moderation)(struct efx_channel *channel); |
1381 | int (*reconfigure_port)(struct efx_nic *efx); |
1382 | void (*prepare_enable_fc_tx)(struct efx_nic *efx); |
1383 | int (*reconfigure_mac)(struct efx_nic *efx, bool mtu_only); |
1384 | bool (*check_mac_fault)(struct efx_nic *efx); |
1385 | void (*get_wol)(struct efx_nic *efx, struct ethtool_wolinfo *wol); |
1386 | int (*set_wol)(struct efx_nic *efx, u32 type); |
1387 | void (*resume_wol)(struct efx_nic *efx); |
1388 | void (*get_fec_stats)(struct efx_nic *efx, |
1389 | struct ethtool_fec_stats *fec_stats); |
1390 | unsigned int (*check_caps)(const struct efx_nic *efx, |
1391 | u8 flag, |
1392 | u32 offset); |
1393 | int (*test_chip)(struct efx_nic *efx, struct efx_self_tests *tests); |
1394 | int (*test_nvram)(struct efx_nic *efx); |
1395 | void (*mcdi_request)(struct efx_nic *efx, |
1396 | const efx_dword_t *hdr, size_t hdr_len, |
1397 | const efx_dword_t *sdu, size_t sdu_len); |
1398 | bool (*mcdi_poll_response)(struct efx_nic *efx); |
1399 | void (*mcdi_read_response)(struct efx_nic *efx, efx_dword_t *pdu, |
1400 | size_t pdu_offset, size_t pdu_len); |
1401 | int (*mcdi_poll_reboot)(struct efx_nic *efx); |
1402 | void (*mcdi_reboot_detected)(struct efx_nic *efx); |
1403 | void (*irq_enable_master)(struct efx_nic *efx); |
1404 | int (*irq_test_generate)(struct efx_nic *efx); |
1405 | void (*irq_disable_non_ev)(struct efx_nic *efx); |
1406 | irqreturn_t (*irq_handle_msi)(int irq, void *dev_id); |
1407 | irqreturn_t (*irq_handle_legacy)(int irq, void *dev_id); |
1408 | int (*tx_probe)(struct efx_tx_queue *tx_queue); |
1409 | void (*tx_init)(struct efx_tx_queue *tx_queue); |
1410 | void (*tx_remove)(struct efx_tx_queue *tx_queue); |
1411 | void (*tx_write)(struct efx_tx_queue *tx_queue); |
1412 | netdev_tx_t (*tx_enqueue)(struct efx_tx_queue *tx_queue, struct sk_buff *skb); |
1413 | unsigned int (*tx_limit_len)(struct efx_tx_queue *tx_queue, |
1414 | dma_addr_t dma_addr, unsigned int len); |
1415 | int (*)(struct efx_nic *efx, bool user, |
1416 | const u32 *rx_indir_table, const u8 *key); |
1417 | int (*)(struct efx_nic *efx); |
1418 | int (*)(struct efx_nic *efx, |
1419 | struct efx_rss_context *ctx, |
1420 | const u32 *rx_indir_table, |
1421 | const u8 *key); |
1422 | int (*)(struct efx_nic *efx, |
1423 | struct efx_rss_context *ctx); |
1424 | void (*)(struct efx_nic *efx); |
1425 | int (*rx_probe)(struct efx_rx_queue *rx_queue); |
1426 | void (*rx_init)(struct efx_rx_queue *rx_queue); |
1427 | void (*rx_remove)(struct efx_rx_queue *rx_queue); |
1428 | void (*rx_write)(struct efx_rx_queue *rx_queue); |
1429 | void (*rx_defer_refill)(struct efx_rx_queue *rx_queue); |
1430 | void (*rx_packet)(struct efx_channel *channel); |
1431 | bool (*rx_buf_hash_valid)(const u8 *prefix); |
1432 | int (*ev_probe)(struct efx_channel *channel); |
1433 | int (*ev_init)(struct efx_channel *channel); |
1434 | void (*ev_fini)(struct efx_channel *channel); |
1435 | void (*ev_remove)(struct efx_channel *channel); |
1436 | int (*ev_process)(struct efx_channel *channel, int quota); |
1437 | void (*ev_read_ack)(struct efx_channel *channel); |
1438 | void (*ev_test_generate)(struct efx_channel *channel); |
1439 | int (*filter_table_probe)(struct efx_nic *efx); |
1440 | void (*filter_table_restore)(struct efx_nic *efx); |
1441 | void (*filter_table_remove)(struct efx_nic *efx); |
1442 | void (*filter_update_rx_scatter)(struct efx_nic *efx); |
1443 | s32 (*filter_insert)(struct efx_nic *efx, |
1444 | struct efx_filter_spec *spec, bool replace); |
1445 | int (*filter_remove_safe)(struct efx_nic *efx, |
1446 | enum efx_filter_priority priority, |
1447 | u32 filter_id); |
1448 | int (*filter_get_safe)(struct efx_nic *efx, |
1449 | enum efx_filter_priority priority, |
1450 | u32 filter_id, struct efx_filter_spec *); |
1451 | int (*filter_clear_rx)(struct efx_nic *efx, |
1452 | enum efx_filter_priority priority); |
1453 | u32 (*filter_count_rx_used)(struct efx_nic *efx, |
1454 | enum efx_filter_priority priority); |
1455 | u32 (*filter_get_rx_id_limit)(struct efx_nic *efx); |
1456 | s32 (*filter_get_rx_ids)(struct efx_nic *efx, |
1457 | enum efx_filter_priority priority, |
1458 | u32 *buf, u32 size); |
1459 | #ifdef CONFIG_RFS_ACCEL |
1460 | bool (*filter_rfs_expire_one)(struct efx_nic *efx, u32 flow_id, |
1461 | unsigned int index); |
1462 | #endif |
1463 | #ifdef CONFIG_SFC_MTD |
1464 | int (*mtd_probe)(struct efx_nic *efx); |
1465 | void (*mtd_rename)(struct efx_mtd_partition *part); |
1466 | int (*mtd_read)(struct mtd_info *mtd, loff_t start, size_t len, |
1467 | size_t *retlen, u8 *buffer); |
1468 | int (*mtd_erase)(struct mtd_info *mtd, loff_t start, size_t len); |
1469 | int (*mtd_write)(struct mtd_info *mtd, loff_t start, size_t len, |
1470 | size_t *retlen, const u8 *buffer); |
1471 | int (*mtd_sync)(struct mtd_info *mtd); |
1472 | #endif |
1473 | void (*ptp_write_host_time)(struct efx_nic *efx, u32 host_time); |
1474 | int (*ptp_set_ts_sync_events)(struct efx_nic *efx, bool en, bool temp); |
1475 | int (*ptp_set_ts_config)(struct efx_nic *efx, |
1476 | struct hwtstamp_config *init); |
1477 | int (*sriov_configure)(struct efx_nic *efx, int num_vfs); |
1478 | int (*vlan_rx_add_vid)(struct efx_nic *efx, __be16 proto, u16 vid); |
1479 | int (*vlan_rx_kill_vid)(struct efx_nic *efx, __be16 proto, u16 vid); |
1480 | int (*get_phys_port_id)(struct efx_nic *efx, |
1481 | struct netdev_phys_item_id *ppid); |
1482 | int (*sriov_init)(struct efx_nic *efx); |
1483 | void (*sriov_fini)(struct efx_nic *efx); |
1484 | bool (*sriov_wanted)(struct efx_nic *efx); |
1485 | int (*sriov_set_vf_mac)(struct efx_nic *efx, int vf_i, const u8 *mac); |
1486 | int (*sriov_set_vf_vlan)(struct efx_nic *efx, int vf_i, u16 vlan, |
1487 | u8 qos); |
1488 | int (*sriov_set_vf_spoofchk)(struct efx_nic *efx, int vf_i, |
1489 | bool spoofchk); |
1490 | int (*sriov_get_vf_config)(struct efx_nic *efx, int vf_i, |
1491 | struct ifla_vf_info *ivi); |
1492 | int (*sriov_set_vf_link_state)(struct efx_nic *efx, int vf_i, |
1493 | int link_state); |
1494 | int (*vswitching_probe)(struct efx_nic *efx); |
1495 | int (*vswitching_restore)(struct efx_nic *efx); |
1496 | void (*vswitching_remove)(struct efx_nic *efx); |
1497 | int (*get_mac_address)(struct efx_nic *efx, unsigned char *perm_addr); |
1498 | int (*set_mac_address)(struct efx_nic *efx); |
1499 | u32 (*tso_versions)(struct efx_nic *efx); |
1500 | int (*udp_tnl_push_ports)(struct efx_nic *efx); |
1501 | bool (*udp_tnl_has_port)(struct efx_nic *efx, __be16 port); |
1502 | size_t (*print_additional_fwver)(struct efx_nic *efx, char *buf, |
1503 | size_t len); |
1504 | void (*sensor_event)(struct efx_nic *efx, efx_qword_t *ev); |
1505 | unsigned int (*rx_recycle_ring_size)(const struct efx_nic *efx); |
1506 | |
1507 | int revision; |
1508 | unsigned int txd_ptr_tbl_base; |
1509 | unsigned int rxd_ptr_tbl_base; |
1510 | unsigned int buf_tbl_base; |
1511 | unsigned int evq_ptr_tbl_base; |
1512 | unsigned int evq_rptr_tbl_base; |
1513 | u64 max_dma_mask; |
1514 | unsigned int rx_prefix_size; |
1515 | unsigned int rx_hash_offset; |
1516 | unsigned int rx_ts_offset; |
1517 | unsigned int rx_buffer_padding; |
1518 | bool can_rx_scatter; |
1519 | bool always_rx_scatter; |
1520 | bool option_descriptors; |
1521 | unsigned int min_interrupt_mode; |
1522 | unsigned int timer_period_max; |
1523 | netdev_features_t offload_features; |
1524 | int mcdi_max_ver; |
1525 | unsigned int max_rx_ip_filters; |
1526 | u32 hwtstamp_filters; |
1527 | unsigned int rx_hash_key_size; |
1528 | }; |
1529 | |
1530 | /************************************************************************** |
1531 | * |
1532 | * Prototypes and inline functions |
1533 | * |
1534 | *************************************************************************/ |
1535 | |
1536 | static inline struct efx_channel * |
1537 | efx_get_channel(struct efx_nic *efx, unsigned index) |
1538 | { |
1539 | EFX_WARN_ON_ONCE_PARANOID(index >= efx->n_channels); |
1540 | return efx->channel[index]; |
1541 | } |
1542 | |
1543 | /* Iterate over all used channels */ |
1544 | #define efx_for_each_channel(_channel, _efx) \ |
1545 | for (_channel = (_efx)->channel[0]; \ |
1546 | _channel; \ |
1547 | _channel = (_channel->channel + 1 < (_efx)->n_channels) ? \ |
1548 | (_efx)->channel[_channel->channel + 1] : NULL) |
1549 | |
1550 | /* Iterate over all used channels in reverse */ |
1551 | #define efx_for_each_channel_rev(_channel, _efx) \ |
1552 | for (_channel = (_efx)->channel[(_efx)->n_channels - 1]; \ |
1553 | _channel; \ |
1554 | _channel = _channel->channel ? \ |
1555 | (_efx)->channel[_channel->channel - 1] : NULL) |
1556 | |
1557 | static inline struct efx_channel * |
1558 | efx_get_tx_channel(struct efx_nic *efx, unsigned int index) |
1559 | { |
1560 | EFX_WARN_ON_ONCE_PARANOID(index >= efx->n_tx_channels); |
1561 | return efx->channel[efx->tx_channel_offset + index]; |
1562 | } |
1563 | |
1564 | static inline struct efx_channel * |
1565 | efx_get_xdp_channel(struct efx_nic *efx, unsigned int index) |
1566 | { |
1567 | EFX_WARN_ON_ONCE_PARANOID(index >= efx->n_xdp_channels); |
1568 | return efx->channel[efx->xdp_channel_offset + index]; |
1569 | } |
1570 | |
1571 | static inline bool efx_channel_is_xdp_tx(struct efx_channel *channel) |
1572 | { |
1573 | return channel->channel - channel->efx->xdp_channel_offset < |
1574 | channel->efx->n_xdp_channels; |
1575 | } |
1576 | |
1577 | static inline bool efx_channel_has_tx_queues(struct efx_channel *channel) |
1578 | { |
1579 | return channel && channel->channel >= channel->efx->tx_channel_offset; |
1580 | } |
1581 | |
1582 | static inline unsigned int efx_channel_num_tx_queues(struct efx_channel *channel) |
1583 | { |
1584 | if (efx_channel_is_xdp_tx(channel)) |
1585 | return channel->efx->xdp_tx_per_channel; |
1586 | return channel->efx->tx_queues_per_channel; |
1587 | } |
1588 | |
1589 | static inline struct efx_tx_queue * |
1590 | efx_channel_get_tx_queue(struct efx_channel *channel, unsigned int type) |
1591 | { |
1592 | EFX_WARN_ON_ONCE_PARANOID(type >= EFX_TXQ_TYPES); |
1593 | return channel->tx_queue_by_type[type]; |
1594 | } |
1595 | |
1596 | static inline struct efx_tx_queue * |
1597 | efx_get_tx_queue(struct efx_nic *efx, unsigned int index, unsigned int type) |
1598 | { |
1599 | struct efx_channel *channel = efx_get_tx_channel(efx, index); |
1600 | |
1601 | return efx_channel_get_tx_queue(channel, type); |
1602 | } |
1603 | |
1604 | /* Iterate over all TX queues belonging to a channel */ |
1605 | #define efx_for_each_channel_tx_queue(_tx_queue, _channel) \ |
1606 | if (!efx_channel_has_tx_queues(_channel)) \ |
1607 | ; \ |
1608 | else \ |
1609 | for (_tx_queue = (_channel)->tx_queue; \ |
1610 | _tx_queue < (_channel)->tx_queue + \ |
1611 | efx_channel_num_tx_queues(_channel); \ |
1612 | _tx_queue++) |
1613 | |
1614 | static inline bool efx_channel_has_rx_queue(struct efx_channel *channel) |
1615 | { |
1616 | return channel->rx_queue.core_index >= 0; |
1617 | } |
1618 | |
1619 | static inline struct efx_rx_queue * |
1620 | efx_channel_get_rx_queue(struct efx_channel *channel) |
1621 | { |
1622 | EFX_WARN_ON_ONCE_PARANOID(!efx_channel_has_rx_queue(channel)); |
1623 | return &channel->rx_queue; |
1624 | } |
1625 | |
1626 | /* Iterate over all RX queues belonging to a channel */ |
1627 | #define efx_for_each_channel_rx_queue(_rx_queue, _channel) \ |
1628 | if (!efx_channel_has_rx_queue(_channel)) \ |
1629 | ; \ |
1630 | else \ |
1631 | for (_rx_queue = &(_channel)->rx_queue; \ |
1632 | _rx_queue; \ |
1633 | _rx_queue = NULL) |
1634 | |
1635 | static inline struct efx_channel * |
1636 | efx_rx_queue_channel(struct efx_rx_queue *rx_queue) |
1637 | { |
1638 | return container_of(rx_queue, struct efx_channel, rx_queue); |
1639 | } |
1640 | |
1641 | static inline int efx_rx_queue_index(struct efx_rx_queue *rx_queue) |
1642 | { |
1643 | return efx_rx_queue_channel(rx_queue)->channel; |
1644 | } |
1645 | |
1646 | /* Returns a pointer to the specified receive buffer in the RX |
1647 | * descriptor queue. |
1648 | */ |
1649 | static inline struct efx_rx_buffer *efx_rx_buffer(struct efx_rx_queue *rx_queue, |
1650 | unsigned int index) |
1651 | { |
1652 | return &rx_queue->buffer[index]; |
1653 | } |
1654 | |
1655 | static inline struct efx_rx_buffer * |
1656 | efx_rx_buf_next(struct efx_rx_queue *rx_queue, struct efx_rx_buffer *rx_buf) |
1657 | { |
1658 | if (unlikely(rx_buf == efx_rx_buffer(rx_queue, rx_queue->ptr_mask))) |
1659 | return efx_rx_buffer(rx_queue, index: 0); |
1660 | else |
1661 | return rx_buf + 1; |
1662 | } |
1663 | |
1664 | /** |
1665 | * EFX_MAX_FRAME_LEN - calculate maximum frame length |
1666 | * |
1667 | * This calculates the maximum frame length that will be used for a |
1668 | * given MTU. The frame length will be equal to the MTU plus a |
1669 | * constant amount of header space and padding. This is the quantity |
1670 | * that the net driver will program into the MAC as the maximum frame |
1671 | * length. |
1672 | * |
1673 | * The 10G MAC requires 8-byte alignment on the frame |
1674 | * length, so we round up to the nearest 8. |
1675 | * |
1676 | * Re-clocking by the XGXS on RX can reduce an IPG to 32 bits (half an |
1677 | * XGMII cycle). If the frame length reaches the maximum value in the |
1678 | * same cycle, the XMAC can miss the IPG altogether. We work around |
1679 | * this by adding a further 16 bytes. |
1680 | */ |
1681 | #define EFX_FRAME_PAD 16 |
1682 | #define EFX_MAX_FRAME_LEN(mtu) \ |
1683 | (ALIGN(((mtu) + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN + EFX_FRAME_PAD), 8)) |
1684 | |
1685 | static inline bool efx_xmit_with_hwtstamp(struct sk_buff *skb) |
1686 | { |
1687 | return skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP; |
1688 | } |
1689 | static inline void efx_xmit_hwtstamp_pending(struct sk_buff *skb) |
1690 | { |
1691 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
1692 | } |
1693 | |
1694 | /* Get the max fill level of the TX queues on this channel */ |
1695 | static inline unsigned int |
1696 | efx_channel_tx_fill_level(struct efx_channel *channel) |
1697 | { |
1698 | struct efx_tx_queue *tx_queue; |
1699 | unsigned int fill_level = 0; |
1700 | |
1701 | efx_for_each_channel_tx_queue(tx_queue, channel) |
1702 | fill_level = max(fill_level, |
1703 | tx_queue->insert_count - tx_queue->read_count); |
1704 | |
1705 | return fill_level; |
1706 | } |
1707 | |
1708 | /* Conservative approximation of efx_channel_tx_fill_level using cached value */ |
1709 | static inline unsigned int |
1710 | efx_channel_tx_old_fill_level(struct efx_channel *channel) |
1711 | { |
1712 | struct efx_tx_queue *tx_queue; |
1713 | unsigned int fill_level = 0; |
1714 | |
1715 | efx_for_each_channel_tx_queue(tx_queue, channel) |
1716 | fill_level = max(fill_level, |
1717 | tx_queue->insert_count - tx_queue->old_read_count); |
1718 | |
1719 | return fill_level; |
1720 | } |
1721 | |
1722 | /* Get all supported features. |
1723 | * If a feature is not fixed, it is present in hw_features. |
1724 | * If a feature is fixed, it does not present in hw_features, but |
1725 | * always in features. |
1726 | */ |
1727 | static inline netdev_features_t efx_supported_features(const struct efx_nic *efx) |
1728 | { |
1729 | const struct net_device *net_dev = efx->net_dev; |
1730 | |
1731 | return net_dev->features | net_dev->hw_features; |
1732 | } |
1733 | |
1734 | /* Get the current TX queue insert index. */ |
1735 | static inline unsigned int |
1736 | efx_tx_queue_get_insert_index(const struct efx_tx_queue *tx_queue) |
1737 | { |
1738 | return tx_queue->insert_count & tx_queue->ptr_mask; |
1739 | } |
1740 | |
1741 | /* Get a TX buffer. */ |
1742 | static inline struct efx_tx_buffer * |
1743 | __efx_tx_queue_get_insert_buffer(const struct efx_tx_queue *tx_queue) |
1744 | { |
1745 | return &tx_queue->buffer[efx_tx_queue_get_insert_index(tx_queue)]; |
1746 | } |
1747 | |
1748 | /* Get a TX buffer, checking it's not currently in use. */ |
1749 | static inline struct efx_tx_buffer * |
1750 | efx_tx_queue_get_insert_buffer(const struct efx_tx_queue *tx_queue) |
1751 | { |
1752 | struct efx_tx_buffer *buffer = |
1753 | __efx_tx_queue_get_insert_buffer(tx_queue); |
1754 | |
1755 | EFX_WARN_ON_ONCE_PARANOID(buffer->len); |
1756 | EFX_WARN_ON_ONCE_PARANOID(buffer->flags); |
1757 | EFX_WARN_ON_ONCE_PARANOID(buffer->unmap_len); |
1758 | |
1759 | return buffer; |
1760 | } |
1761 | |
1762 | #endif /* EFX_NET_DRIVER_H */ |
1763 | |