1// SPDX-License-Identifier: (GPL-2.0 OR MIT)
2/* Microsemi Ocelot Switch driver
3 * Copyright (c) 2019 Microsemi Corporation
4 */
5
6#include <linux/iopoll.h>
7#include <linux/proc_fs.h>
8
9#include <soc/mscc/ocelot_vcap.h>
10#include "ocelot_police.h"
11#include "ocelot_vcap.h"
12
13#define ENTRY_WIDTH 32
14
15enum vcap_sel {
16 VCAP_SEL_ENTRY = 0x1,
17 VCAP_SEL_ACTION = 0x2,
18 VCAP_SEL_COUNTER = 0x4,
19 VCAP_SEL_ALL = 0x7,
20};
21
22enum vcap_cmd {
23 VCAP_CMD_WRITE = 0, /* Copy from Cache to TCAM */
24 VCAP_CMD_READ = 1, /* Copy from TCAM to Cache */
25 VCAP_CMD_MOVE_UP = 2, /* Move <count> up */
26 VCAP_CMD_MOVE_DOWN = 3, /* Move <count> down */
27 VCAP_CMD_INITIALIZE = 4, /* Write all (from cache) */
28};
29
30#define VCAP_ENTRY_WIDTH 12 /* Max entry width (32bit words) */
31#define VCAP_COUNTER_WIDTH 4 /* Max counter width (32bit words) */
32
33struct vcap_data {
34 u32 entry[VCAP_ENTRY_WIDTH]; /* ENTRY_DAT */
35 u32 mask[VCAP_ENTRY_WIDTH]; /* MASK_DAT */
36 u32 action[VCAP_ENTRY_WIDTH]; /* ACTION_DAT */
37 u32 counter[VCAP_COUNTER_WIDTH]; /* CNT_DAT */
38 u32 tg; /* TG_DAT */
39 u32 type; /* Action type */
40 u32 tg_sw; /* Current type-group */
41 u32 cnt; /* Current counter */
42 u32 key_offset; /* Current entry offset */
43 u32 action_offset; /* Current action offset */
44 u32 counter_offset; /* Current counter offset */
45 u32 tg_value; /* Current type-group value */
46 u32 tg_mask; /* Current type-group mask */
47};
48
49static u32 vcap_read_update_ctrl(struct ocelot *ocelot,
50 const struct vcap_props *vcap)
51{
52 return ocelot_target_read(ocelot, vcap->target, VCAP_CORE_UPDATE_CTRL);
53}
54
55static void vcap_cmd(struct ocelot *ocelot, const struct vcap_props *vcap,
56 u16 ix, int cmd, int sel)
57{
58 u32 value = (VCAP_CORE_UPDATE_CTRL_UPDATE_CMD(cmd) |
59 VCAP_CORE_UPDATE_CTRL_UPDATE_ADDR(ix) |
60 VCAP_CORE_UPDATE_CTRL_UPDATE_SHOT);
61
62 if ((sel & VCAP_SEL_ENTRY) && ix >= vcap->entry_count)
63 return;
64
65 if (!(sel & VCAP_SEL_ENTRY))
66 value |= VCAP_CORE_UPDATE_CTRL_UPDATE_ENTRY_DIS;
67
68 if (!(sel & VCAP_SEL_ACTION))
69 value |= VCAP_CORE_UPDATE_CTRL_UPDATE_ACTION_DIS;
70
71 if (!(sel & VCAP_SEL_COUNTER))
72 value |= VCAP_CORE_UPDATE_CTRL_UPDATE_CNT_DIS;
73
74 ocelot_target_write(ocelot, vcap->target, value, VCAP_CORE_UPDATE_CTRL);
75
76 read_poll_timeout(vcap_read_update_ctrl, value,
77 (value & VCAP_CORE_UPDATE_CTRL_UPDATE_SHOT) == 0,
78 10, 100000, false, ocelot, vcap);
79}
80
81/* Convert from 0-based row to VCAP entry row and run command */
82static void vcap_row_cmd(struct ocelot *ocelot, const struct vcap_props *vcap,
83 u32 row, int cmd, int sel)
84{
85 vcap_cmd(ocelot, vcap, ix: vcap->entry_count - row - 1, cmd, sel);
86}
87
88static void vcap_entry2cache(struct ocelot *ocelot,
89 const struct vcap_props *vcap,
90 struct vcap_data *data)
91{
92 u32 entry_words, i;
93
94 entry_words = DIV_ROUND_UP(vcap->entry_width, ENTRY_WIDTH);
95
96 for (i = 0; i < entry_words; i++) {
97 ocelot_target_write_rix(ocelot, vcap->target, data->entry[i],
98 VCAP_CACHE_ENTRY_DAT, i);
99 ocelot_target_write_rix(ocelot, vcap->target, ~data->mask[i],
100 VCAP_CACHE_MASK_DAT, i);
101 }
102 ocelot_target_write(ocelot, vcap->target, data->tg, VCAP_CACHE_TG_DAT);
103}
104
105static void vcap_cache2entry(struct ocelot *ocelot,
106 const struct vcap_props *vcap,
107 struct vcap_data *data)
108{
109 u32 entry_words, i;
110
111 entry_words = DIV_ROUND_UP(vcap->entry_width, ENTRY_WIDTH);
112
113 for (i = 0; i < entry_words; i++) {
114 data->entry[i] = ocelot_target_read_rix(ocelot, vcap->target,
115 VCAP_CACHE_ENTRY_DAT, i);
116 // Invert mask
117 data->mask[i] = ~ocelot_target_read_rix(ocelot, vcap->target,
118 VCAP_CACHE_MASK_DAT, i);
119 }
120 data->tg = ocelot_target_read(ocelot, vcap->target, VCAP_CACHE_TG_DAT);
121}
122
123static void vcap_action2cache(struct ocelot *ocelot,
124 const struct vcap_props *vcap,
125 struct vcap_data *data)
126{
127 u32 action_words, mask;
128 int i, width;
129
130 /* Encode action type */
131 width = vcap->action_type_width;
132 if (width) {
133 mask = GENMASK(width, 0);
134 data->action[0] = ((data->action[0] & ~mask) | data->type);
135 }
136
137 action_words = DIV_ROUND_UP(vcap->action_width, ENTRY_WIDTH);
138
139 for (i = 0; i < action_words; i++)
140 ocelot_target_write_rix(ocelot, vcap->target, data->action[i],
141 VCAP_CACHE_ACTION_DAT, i);
142
143 for (i = 0; i < vcap->counter_words; i++)
144 ocelot_target_write_rix(ocelot, vcap->target, data->counter[i],
145 VCAP_CACHE_CNT_DAT, i);
146}
147
148static void vcap_cache2action(struct ocelot *ocelot,
149 const struct vcap_props *vcap,
150 struct vcap_data *data)
151{
152 u32 action_words;
153 int i, width;
154
155 action_words = DIV_ROUND_UP(vcap->action_width, ENTRY_WIDTH);
156
157 for (i = 0; i < action_words; i++)
158 data->action[i] = ocelot_target_read_rix(ocelot, vcap->target,
159 VCAP_CACHE_ACTION_DAT,
160 i);
161
162 for (i = 0; i < vcap->counter_words; i++)
163 data->counter[i] = ocelot_target_read_rix(ocelot, vcap->target,
164 VCAP_CACHE_CNT_DAT,
165 i);
166
167 /* Extract action type */
168 width = vcap->action_type_width;
169 data->type = (width ? (data->action[0] & GENMASK(width, 0)) : 0);
170}
171
172/* Calculate offsets for entry */
173static void vcap_data_offset_get(const struct vcap_props *vcap,
174 struct vcap_data *data, int ix)
175{
176 int num_subwords_per_entry, num_subwords_per_action;
177 int i, col, offset, num_entries_per_row, base;
178 u32 width = vcap->tg_width;
179
180 switch (data->tg_sw) {
181 case VCAP_TG_FULL:
182 num_entries_per_row = 1;
183 break;
184 case VCAP_TG_HALF:
185 num_entries_per_row = 2;
186 break;
187 case VCAP_TG_QUARTER:
188 num_entries_per_row = 4;
189 break;
190 default:
191 return;
192 }
193
194 col = (ix % num_entries_per_row);
195 num_subwords_per_entry = (vcap->sw_count / num_entries_per_row);
196 base = (vcap->sw_count - col * num_subwords_per_entry -
197 num_subwords_per_entry);
198 data->tg_value = 0;
199 data->tg_mask = 0;
200 for (i = 0; i < num_subwords_per_entry; i++) {
201 offset = ((base + i) * width);
202 data->tg_value |= (data->tg_sw << offset);
203 data->tg_mask |= GENMASK(offset + width - 1, offset);
204 }
205
206 /* Calculate key/action/counter offsets */
207 col = (num_entries_per_row - col - 1);
208 data->key_offset = (base * vcap->entry_width) / vcap->sw_count;
209 data->counter_offset = (num_subwords_per_entry * col *
210 vcap->counter_width);
211 i = data->type;
212 width = vcap->action_table[i].width;
213 num_subwords_per_action = vcap->action_table[i].count;
214 data->action_offset = ((num_subwords_per_action * col * width) /
215 num_entries_per_row);
216 data->action_offset += vcap->action_type_width;
217}
218
219static void vcap_data_set(u32 *data, u32 offset, u32 len, u32 value)
220{
221 u32 i, v, m;
222
223 for (i = 0; i < len; i++, offset++) {
224 v = data[offset / ENTRY_WIDTH];
225 m = (1 << (offset % ENTRY_WIDTH));
226 if (value & (1 << i))
227 v |= m;
228 else
229 v &= ~m;
230 data[offset / ENTRY_WIDTH] = v;
231 }
232}
233
234static u32 vcap_data_get(u32 *data, u32 offset, u32 len)
235{
236 u32 i, v, m, value = 0;
237
238 for (i = 0; i < len; i++, offset++) {
239 v = data[offset / ENTRY_WIDTH];
240 m = (1 << (offset % ENTRY_WIDTH));
241 if (v & m)
242 value |= (1 << i);
243 }
244 return value;
245}
246
247static void vcap_key_field_set(struct vcap_data *data, u32 offset, u32 width,
248 u32 value, u32 mask)
249{
250 vcap_data_set(data: data->entry, offset: offset + data->key_offset, len: width, value);
251 vcap_data_set(data: data->mask, offset: offset + data->key_offset, len: width, value: mask);
252}
253
254static void vcap_key_set(const struct vcap_props *vcap, struct vcap_data *data,
255 int field, u32 value, u32 mask)
256{
257 u32 offset = vcap->keys[field].offset;
258 u32 length = vcap->keys[field].length;
259
260 vcap_key_field_set(data, offset, width: length, value, mask);
261}
262
263static void vcap_key_bytes_set(const struct vcap_props *vcap,
264 struct vcap_data *data, int field,
265 u8 *val, u8 *msk)
266{
267 u32 offset = vcap->keys[field].offset;
268 u32 count = vcap->keys[field].length;
269 u32 i, j, n = 0, value = 0, mask = 0;
270
271 WARN_ON(count % 8);
272
273 /* Data wider than 32 bits are split up in chunks of maximum 32 bits.
274 * The 32 LSB of the data are written to the 32 MSB of the TCAM.
275 */
276 offset += count;
277 count /= 8;
278
279 for (i = 0; i < count; i++) {
280 j = (count - i - 1);
281 value += (val[j] << n);
282 mask += (msk[j] << n);
283 n += 8;
284 if (n == ENTRY_WIDTH || (i + 1) == count) {
285 offset -= n;
286 vcap_key_field_set(data, offset, width: n, value, mask);
287 n = 0;
288 value = 0;
289 mask = 0;
290 }
291 }
292}
293
294static void vcap_key_l4_port_set(const struct vcap_props *vcap,
295 struct vcap_data *data, int field,
296 struct ocelot_vcap_udp_tcp *port)
297{
298 u32 offset = vcap->keys[field].offset;
299 u32 length = vcap->keys[field].length;
300
301 WARN_ON(length != 16);
302
303 vcap_key_field_set(data, offset, width: length, value: port->value, mask: port->mask);
304}
305
306static void vcap_key_bit_set(const struct vcap_props *vcap,
307 struct vcap_data *data, int field,
308 enum ocelot_vcap_bit val)
309{
310 u32 value = (val == OCELOT_VCAP_BIT_1 ? 1 : 0);
311 u32 msk = (val == OCELOT_VCAP_BIT_ANY ? 0 : 1);
312 u32 offset = vcap->keys[field].offset;
313 u32 length = vcap->keys[field].length;
314
315 WARN_ON(length != 1);
316
317 vcap_key_field_set(data, offset, width: length, value, mask: msk);
318}
319
320static void vcap_action_set(const struct vcap_props *vcap,
321 struct vcap_data *data, int field, u32 value)
322{
323 int offset = vcap->actions[field].offset;
324 int length = vcap->actions[field].length;
325
326 vcap_data_set(data: data->action, offset: offset + data->action_offset, len: length,
327 value);
328}
329
330static void is2_action_set(struct ocelot *ocelot, struct vcap_data *data,
331 struct ocelot_vcap_filter *filter)
332{
333 const struct vcap_props *vcap = &ocelot->vcap[VCAP_IS2];
334 struct ocelot_vcap_action *a = &filter->action;
335
336 vcap_action_set(vcap, data, field: VCAP_IS2_ACT_MASK_MODE, value: a->mask_mode);
337 vcap_action_set(vcap, data, field: VCAP_IS2_ACT_PORT_MASK, value: a->port_mask);
338 vcap_action_set(vcap, data, field: VCAP_IS2_ACT_MIRROR_ENA, value: a->mirror_ena);
339 vcap_action_set(vcap, data, field: VCAP_IS2_ACT_POLICE_ENA, value: a->police_ena);
340 vcap_action_set(vcap, data, field: VCAP_IS2_ACT_POLICE_IDX, value: a->pol_ix);
341 vcap_action_set(vcap, data, field: VCAP_IS2_ACT_CPU_QU_NUM, value: a->cpu_qu_num);
342 vcap_action_set(vcap, data, field: VCAP_IS2_ACT_CPU_COPY_ENA, value: a->cpu_copy_ena);
343}
344
345static void is2_entry_set(struct ocelot *ocelot, int ix,
346 struct ocelot_vcap_filter *filter)
347{
348 const struct vcap_props *vcap = &ocelot->vcap[VCAP_IS2];
349 struct ocelot_vcap_key_vlan *tag = &filter->vlan;
350 u32 val, msk, type, type_mask = 0xf, i, count;
351 struct ocelot_vcap_u64 payload;
352 struct vcap_data data;
353 int row = (ix / 2);
354
355 memset(&payload, 0, sizeof(payload));
356 memset(&data, 0, sizeof(data));
357
358 /* Read row */
359 vcap_row_cmd(ocelot, vcap, row, cmd: VCAP_CMD_READ, sel: VCAP_SEL_ALL);
360 vcap_cache2entry(ocelot, vcap, data: &data);
361 vcap_cache2action(ocelot, vcap, data: &data);
362
363 data.tg_sw = VCAP_TG_HALF;
364 vcap_data_offset_get(vcap, data: &data, ix);
365 data.tg = (data.tg & ~data.tg_mask);
366 if (filter->prio != 0)
367 data.tg |= data.tg_value;
368
369 data.type = IS2_ACTION_TYPE_NORMAL;
370
371 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_PAG, value: filter->pag, mask: 0xff);
372 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_FIRST,
373 val: (filter->lookup == 0) ? OCELOT_VCAP_BIT_1 :
374 OCELOT_VCAP_BIT_0);
375 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_IGR_PORT_MASK, value: 0,
376 mask: ~filter->ingress_port_mask);
377 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_HOST_MATCH,
378 val: OCELOT_VCAP_BIT_ANY);
379 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L2_MC, val: filter->dmac_mc);
380 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L2_BC, val: filter->dmac_bc);
381 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_VLAN_TAGGED, val: tag->tagged);
382 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_VID,
383 value: tag->vid.value, mask: tag->vid.mask);
384 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_PCP,
385 value: tag->pcp.value[0], mask: tag->pcp.mask[0]);
386 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_DEI, val: tag->dei);
387
388 switch (filter->key_type) {
389 case OCELOT_VCAP_KEY_ETYPE: {
390 struct ocelot_vcap_key_etype *etype = &filter->key.etype;
391
392 type = IS2_TYPE_ETYPE;
393 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L2_DMAC,
394 val: etype->dmac.value, msk: etype->dmac.mask);
395 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L2_SMAC,
396 val: etype->smac.value, msk: etype->smac.mask);
397 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_ETYPE_ETYPE,
398 val: etype->etype.value, msk: etype->etype.mask);
399 /* Clear unused bits */
400 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_ETYPE_L2_PAYLOAD0,
401 value: 0, mask: 0);
402 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_ETYPE_L2_PAYLOAD1,
403 value: 0, mask: 0);
404 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_ETYPE_L2_PAYLOAD2,
405 value: 0, mask: 0);
406 vcap_key_bytes_set(vcap, data: &data,
407 field: VCAP_IS2_HK_MAC_ETYPE_L2_PAYLOAD0,
408 val: etype->data.value, msk: etype->data.mask);
409 break;
410 }
411 case OCELOT_VCAP_KEY_LLC: {
412 struct ocelot_vcap_key_llc *llc = &filter->key.llc;
413
414 type = IS2_TYPE_LLC;
415 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L2_DMAC,
416 val: llc->dmac.value, msk: llc->dmac.mask);
417 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L2_SMAC,
418 val: llc->smac.value, msk: llc->smac.mask);
419 for (i = 0; i < 4; i++) {
420 payload.value[i] = llc->llc.value[i];
421 payload.mask[i] = llc->llc.mask[i];
422 }
423 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_LLC_L2_LLC,
424 val: payload.value, msk: payload.mask);
425 break;
426 }
427 case OCELOT_VCAP_KEY_SNAP: {
428 struct ocelot_vcap_key_snap *snap = &filter->key.snap;
429
430 type = IS2_TYPE_SNAP;
431 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L2_DMAC,
432 val: snap->dmac.value, msk: snap->dmac.mask);
433 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L2_SMAC,
434 val: snap->smac.value, msk: snap->smac.mask);
435 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_SNAP_L2_SNAP,
436 val: filter->key.snap.snap.value,
437 msk: filter->key.snap.snap.mask);
438 break;
439 }
440 case OCELOT_VCAP_KEY_ARP: {
441 struct ocelot_vcap_key_arp *arp = &filter->key.arp;
442
443 type = IS2_TYPE_ARP;
444 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_ARP_SMAC,
445 val: arp->smac.value, msk: arp->smac.mask);
446 vcap_key_bit_set(vcap, data: &data,
447 field: VCAP_IS2_HK_MAC_ARP_ADDR_SPACE_OK,
448 val: arp->ethernet);
449 vcap_key_bit_set(vcap, data: &data,
450 field: VCAP_IS2_HK_MAC_ARP_PROTO_SPACE_OK,
451 val: arp->ip);
452 vcap_key_bit_set(vcap, data: &data,
453 field: VCAP_IS2_HK_MAC_ARP_LEN_OK,
454 val: arp->length);
455 vcap_key_bit_set(vcap, data: &data,
456 field: VCAP_IS2_HK_MAC_ARP_TARGET_MATCH,
457 val: arp->dmac_match);
458 vcap_key_bit_set(vcap, data: &data,
459 field: VCAP_IS2_HK_MAC_ARP_SENDER_MATCH,
460 val: arp->smac_match);
461 vcap_key_bit_set(vcap, data: &data,
462 field: VCAP_IS2_HK_MAC_ARP_OPCODE_UNKNOWN,
463 val: arp->unknown);
464
465 /* OPCODE is inverse, bit 0 is reply flag, bit 1 is RARP flag */
466 val = ((arp->req == OCELOT_VCAP_BIT_0 ? 1 : 0) |
467 (arp->arp == OCELOT_VCAP_BIT_0 ? 2 : 0));
468 msk = ((arp->req == OCELOT_VCAP_BIT_ANY ? 0 : 1) |
469 (arp->arp == OCELOT_VCAP_BIT_ANY ? 0 : 2));
470 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_ARP_OPCODE,
471 value: val, mask: msk);
472 vcap_key_bytes_set(vcap, data: &data,
473 field: VCAP_IS2_HK_MAC_ARP_L3_IP4_DIP,
474 val: arp->dip.value.addr, msk: arp->dip.mask.addr);
475 vcap_key_bytes_set(vcap, data: &data,
476 field: VCAP_IS2_HK_MAC_ARP_L3_IP4_SIP,
477 val: arp->sip.value.addr, msk: arp->sip.mask.addr);
478 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_MAC_ARP_DIP_EQ_SIP,
479 value: 0, mask: 0);
480 break;
481 }
482 case OCELOT_VCAP_KEY_IPV4:
483 case OCELOT_VCAP_KEY_IPV6: {
484 enum ocelot_vcap_bit sip_eq_dip, sport_eq_dport, seq_zero, tcp;
485 enum ocelot_vcap_bit ttl, fragment, options, tcp_ack, tcp_urg;
486 enum ocelot_vcap_bit tcp_fin, tcp_syn, tcp_rst, tcp_psh;
487 struct ocelot_vcap_key_ipv4 *ipv4 = NULL;
488 struct ocelot_vcap_key_ipv6 *ipv6 = NULL;
489 struct ocelot_vcap_udp_tcp *sport, *dport;
490 struct ocelot_vcap_ipv4 sip, dip;
491 struct ocelot_vcap_u8 proto, ds;
492 struct ocelot_vcap_u48 *ip_data;
493
494 if (filter->key_type == OCELOT_VCAP_KEY_IPV4) {
495 ipv4 = &filter->key.ipv4;
496 ttl = ipv4->ttl;
497 fragment = ipv4->fragment;
498 options = ipv4->options;
499 proto = ipv4->proto;
500 ds = ipv4->ds;
501 ip_data = &ipv4->data;
502 sip = ipv4->sip;
503 dip = ipv4->dip;
504 sport = &ipv4->sport;
505 dport = &ipv4->dport;
506 tcp_fin = ipv4->tcp_fin;
507 tcp_syn = ipv4->tcp_syn;
508 tcp_rst = ipv4->tcp_rst;
509 tcp_psh = ipv4->tcp_psh;
510 tcp_ack = ipv4->tcp_ack;
511 tcp_urg = ipv4->tcp_urg;
512 sip_eq_dip = ipv4->sip_eq_dip;
513 sport_eq_dport = ipv4->sport_eq_dport;
514 seq_zero = ipv4->seq_zero;
515 } else {
516 ipv6 = &filter->key.ipv6;
517 ttl = ipv6->ttl;
518 fragment = OCELOT_VCAP_BIT_ANY;
519 options = OCELOT_VCAP_BIT_ANY;
520 proto = ipv6->proto;
521 ds = ipv6->ds;
522 ip_data = &ipv6->data;
523 for (i = 0; i < 8; i++) {
524 val = ipv6->sip.value[i + 8];
525 msk = ipv6->sip.mask[i + 8];
526 if (i < 4) {
527 dip.value.addr[i] = val;
528 dip.mask.addr[i] = msk;
529 } else {
530 sip.value.addr[i - 4] = val;
531 sip.mask.addr[i - 4] = msk;
532 }
533 }
534 sport = &ipv6->sport;
535 dport = &ipv6->dport;
536 tcp_fin = ipv6->tcp_fin;
537 tcp_syn = ipv6->tcp_syn;
538 tcp_rst = ipv6->tcp_rst;
539 tcp_psh = ipv6->tcp_psh;
540 tcp_ack = ipv6->tcp_ack;
541 tcp_urg = ipv6->tcp_urg;
542 sip_eq_dip = ipv6->sip_eq_dip;
543 sport_eq_dport = ipv6->sport_eq_dport;
544 seq_zero = ipv6->seq_zero;
545 }
546
547 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_IP4,
548 val: ipv4 ? OCELOT_VCAP_BIT_1 : OCELOT_VCAP_BIT_0);
549 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L3_FRAGMENT,
550 val: fragment);
551 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_L3_FRAG_OFS_GT0, value: 0, mask: 0);
552 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L3_OPTIONS,
553 val: options);
554 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_IP4_L3_TTL_GT0,
555 val: ttl);
556 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L3_TOS,
557 val: ds.value, msk: ds.mask);
558 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L3_IP4_DIP,
559 val: dip.value.addr, msk: dip.mask.addr);
560 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS2_HK_L3_IP4_SIP,
561 val: sip.value.addr, msk: sip.mask.addr);
562 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_DIP_EQ_SIP,
563 val: sip_eq_dip);
564 val = proto.value[0];
565 msk = proto.mask[0];
566 type = IS2_TYPE_IP_UDP_TCP;
567 if (msk == 0xff && (val == IPPROTO_TCP || val == IPPROTO_UDP)) {
568 /* UDP/TCP protocol match */
569 tcp = (val == IPPROTO_TCP ?
570 OCELOT_VCAP_BIT_1 : OCELOT_VCAP_BIT_0);
571 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_TCP, val: tcp);
572 vcap_key_l4_port_set(vcap, data: &data,
573 field: VCAP_IS2_HK_L4_DPORT, port: dport);
574 vcap_key_l4_port_set(vcap, data: &data,
575 field: VCAP_IS2_HK_L4_SPORT, port: sport);
576 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_L4_RNG, value: 0, mask: 0);
577 vcap_key_bit_set(vcap, data: &data,
578 field: VCAP_IS2_HK_L4_SPORT_EQ_DPORT,
579 val: sport_eq_dport);
580 vcap_key_bit_set(vcap, data: &data,
581 field: VCAP_IS2_HK_L4_SEQUENCE_EQ0,
582 val: seq_zero);
583 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L4_FIN,
584 val: tcp_fin);
585 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L4_SYN,
586 val: tcp_syn);
587 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L4_RST,
588 val: tcp_rst);
589 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L4_PSH,
590 val: tcp_psh);
591 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L4_ACK,
592 val: tcp_ack);
593 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS2_HK_L4_URG,
594 val: tcp_urg);
595 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_L4_1588_DOM,
596 value: 0, mask: 0);
597 vcap_key_set(vcap, data: &data, field: VCAP_IS2_HK_L4_1588_VER,
598 value: 0, mask: 0);
599 } else {
600 if (msk == 0) {
601 /* Any IP protocol match */
602 type_mask = IS2_TYPE_MASK_IP_ANY;
603 } else {
604 /* Non-UDP/TCP protocol match */
605 type = IS2_TYPE_IP_OTHER;
606 for (i = 0; i < 6; i++) {
607 payload.value[i] = ip_data->value[i];
608 payload.mask[i] = ip_data->mask[i];
609 }
610 }
611 vcap_key_bytes_set(vcap, data: &data,
612 field: VCAP_IS2_HK_IP4_L3_PROTO,
613 val: proto.value, msk: proto.mask);
614 vcap_key_bytes_set(vcap, data: &data,
615 field: VCAP_IS2_HK_L3_PAYLOAD,
616 val: payload.value, msk: payload.mask);
617 }
618 break;
619 }
620 case OCELOT_VCAP_KEY_ANY:
621 default:
622 type = 0;
623 type_mask = 0;
624 count = vcap->entry_width / 2;
625 /* Iterate over the non-common part of the key and
626 * clear entry data
627 */
628 for (i = vcap->keys[VCAP_IS2_HK_L2_DMAC].offset;
629 i < count; i += ENTRY_WIDTH) {
630 vcap_key_field_set(data: &data, offset: i, min(32u, count - i), value: 0, mask: 0);
631 }
632 break;
633 }
634
635 vcap_key_set(vcap, data: &data, field: VCAP_IS2_TYPE, value: type, mask: type_mask);
636 is2_action_set(ocelot, data: &data, filter);
637 vcap_data_set(data: data.counter, offset: data.counter_offset,
638 len: vcap->counter_width, value: filter->stats.pkts);
639
640 /* Write row */
641 vcap_entry2cache(ocelot, vcap, data: &data);
642 vcap_action2cache(ocelot, vcap, data: &data);
643 vcap_row_cmd(ocelot, vcap, row, cmd: VCAP_CMD_WRITE, sel: VCAP_SEL_ALL);
644}
645
646static void is1_action_set(struct ocelot *ocelot, struct vcap_data *data,
647 const struct ocelot_vcap_filter *filter)
648{
649 const struct vcap_props *vcap = &ocelot->vcap[VCAP_IS1];
650 const struct ocelot_vcap_action *a = &filter->action;
651
652 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_VID_REPLACE_ENA,
653 value: a->vid_replace_ena);
654 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_VID_ADD_VAL, value: a->vid);
655 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_VLAN_POP_CNT_ENA,
656 value: a->vlan_pop_cnt_ena);
657 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_VLAN_POP_CNT,
658 value: a->vlan_pop_cnt);
659 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_PCP_DEI_ENA, value: a->pcp_dei_ena);
660 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_PCP_VAL, value: a->pcp);
661 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_DEI_VAL, value: a->dei);
662 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_QOS_ENA, value: a->qos_ena);
663 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_QOS_VAL, value: a->qos_val);
664 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_PAG_OVERRIDE_MASK,
665 value: a->pag_override_mask);
666 vcap_action_set(vcap, data, field: VCAP_IS1_ACT_PAG_VAL, value: a->pag_val);
667}
668
669static void is1_entry_set(struct ocelot *ocelot, int ix,
670 struct ocelot_vcap_filter *filter)
671{
672 const struct vcap_props *vcap = &ocelot->vcap[VCAP_IS1];
673 struct ocelot_vcap_key_vlan *tag = &filter->vlan;
674 struct vcap_data data;
675 int row = ix / 2;
676 u32 type;
677
678 memset(&data, 0, sizeof(data));
679
680 /* Read row */
681 vcap_row_cmd(ocelot, vcap, row, cmd: VCAP_CMD_READ, sel: VCAP_SEL_ALL);
682 vcap_cache2entry(ocelot, vcap, data: &data);
683 vcap_cache2action(ocelot, vcap, data: &data);
684
685 data.tg_sw = VCAP_TG_HALF;
686 data.type = IS1_ACTION_TYPE_NORMAL;
687 vcap_data_offset_get(vcap, data: &data, ix);
688 data.tg = (data.tg & ~data.tg_mask);
689 if (filter->prio != 0)
690 data.tg |= data.tg_value;
691
692 vcap_key_set(vcap, data: &data, field: VCAP_IS1_HK_LOOKUP, value: filter->lookup, mask: 0x3);
693 vcap_key_set(vcap, data: &data, field: VCAP_IS1_HK_IGR_PORT_MASK, value: 0,
694 mask: ~filter->ingress_port_mask);
695 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_L2_MC, val: filter->dmac_mc);
696 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_L2_BC, val: filter->dmac_bc);
697 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_VLAN_TAGGED, val: tag->tagged);
698 vcap_key_set(vcap, data: &data, field: VCAP_IS1_HK_VID,
699 value: tag->vid.value, mask: tag->vid.mask);
700 vcap_key_set(vcap, data: &data, field: VCAP_IS1_HK_PCP,
701 value: tag->pcp.value[0], mask: tag->pcp.mask[0]);
702 type = IS1_TYPE_S1_NORMAL;
703
704 switch (filter->key_type) {
705 case OCELOT_VCAP_KEY_ETYPE: {
706 struct ocelot_vcap_key_etype *etype = &filter->key.etype;
707
708 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS1_HK_L2_SMAC,
709 val: etype->smac.value, msk: etype->smac.mask);
710 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS1_HK_ETYPE,
711 val: etype->etype.value, msk: etype->etype.mask);
712 break;
713 }
714 case OCELOT_VCAP_KEY_IPV4: {
715 struct ocelot_vcap_key_ipv4 *ipv4 = &filter->key.ipv4;
716 struct ocelot_vcap_udp_tcp *sport = &ipv4->sport;
717 struct ocelot_vcap_udp_tcp *dport = &ipv4->dport;
718 enum ocelot_vcap_bit tcp_udp = OCELOT_VCAP_BIT_0;
719 struct ocelot_vcap_u8 proto = ipv4->proto;
720 struct ocelot_vcap_ipv4 sip = ipv4->sip;
721 u32 val, msk;
722
723 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_IP_SNAP,
724 val: OCELOT_VCAP_BIT_1);
725 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_IP4,
726 val: OCELOT_VCAP_BIT_1);
727 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_ETYPE_LEN,
728 val: OCELOT_VCAP_BIT_1);
729 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS1_HK_L3_IP4_SIP,
730 val: sip.value.addr, msk: sip.mask.addr);
731
732 val = proto.value[0];
733 msk = proto.mask[0];
734
735 if ((val == NEXTHDR_TCP || val == NEXTHDR_UDP) && msk == 0xff)
736 tcp_udp = OCELOT_VCAP_BIT_1;
737 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_TCP_UDP, val: tcp_udp);
738
739 if (tcp_udp) {
740 enum ocelot_vcap_bit tcp = OCELOT_VCAP_BIT_0;
741
742 if (val == NEXTHDR_TCP)
743 tcp = OCELOT_VCAP_BIT_1;
744
745 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_TCP, val: tcp);
746 vcap_key_l4_port_set(vcap, data: &data, field: VCAP_IS1_HK_L4_SPORT,
747 port: sport);
748 /* Overloaded field */
749 vcap_key_l4_port_set(vcap, data: &data, field: VCAP_IS1_HK_ETYPE,
750 port: dport);
751 } else {
752 /* IPv4 "other" frame */
753 struct ocelot_vcap_u16 etype = {0};
754
755 /* Overloaded field */
756 etype.value[0] = proto.value[0];
757 etype.mask[0] = proto.mask[0];
758
759 vcap_key_bytes_set(vcap, data: &data, field: VCAP_IS1_HK_ETYPE,
760 val: etype.value, msk: etype.mask);
761 }
762 break;
763 }
764 default:
765 break;
766 }
767 vcap_key_bit_set(vcap, data: &data, field: VCAP_IS1_HK_TYPE,
768 val: type ? OCELOT_VCAP_BIT_1 : OCELOT_VCAP_BIT_0);
769
770 is1_action_set(ocelot, data: &data, filter);
771 vcap_data_set(data: data.counter, offset: data.counter_offset,
772 len: vcap->counter_width, value: filter->stats.pkts);
773
774 /* Write row */
775 vcap_entry2cache(ocelot, vcap, data: &data);
776 vcap_action2cache(ocelot, vcap, data: &data);
777 vcap_row_cmd(ocelot, vcap, row, cmd: VCAP_CMD_WRITE, sel: VCAP_SEL_ALL);
778}
779
780static void es0_action_set(struct ocelot *ocelot, struct vcap_data *data,
781 const struct ocelot_vcap_filter *filter)
782{
783 const struct vcap_props *vcap = &ocelot->vcap[VCAP_ES0];
784 const struct ocelot_vcap_action *a = &filter->action;
785
786 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_PUSH_OUTER_TAG,
787 value: a->push_outer_tag);
788 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_PUSH_INNER_TAG,
789 value: a->push_inner_tag);
790 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_TAG_A_TPID_SEL,
791 value: a->tag_a_tpid_sel);
792 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_TAG_A_VID_SEL,
793 value: a->tag_a_vid_sel);
794 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_TAG_A_PCP_SEL,
795 value: a->tag_a_pcp_sel);
796 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_VID_A_VAL, value: a->vid_a_val);
797 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_PCP_A_VAL, value: a->pcp_a_val);
798 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_TAG_B_TPID_SEL,
799 value: a->tag_b_tpid_sel);
800 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_TAG_B_VID_SEL,
801 value: a->tag_b_vid_sel);
802 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_TAG_B_PCP_SEL,
803 value: a->tag_b_pcp_sel);
804 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_VID_B_VAL, value: a->vid_b_val);
805 vcap_action_set(vcap, data, field: VCAP_ES0_ACT_PCP_B_VAL, value: a->pcp_b_val);
806}
807
808static void es0_entry_set(struct ocelot *ocelot, int ix,
809 struct ocelot_vcap_filter *filter)
810{
811 const struct vcap_props *vcap = &ocelot->vcap[VCAP_ES0];
812 struct ocelot_vcap_key_vlan *tag = &filter->vlan;
813 struct vcap_data data;
814 int row = ix;
815
816 memset(&data, 0, sizeof(data));
817
818 /* Read row */
819 vcap_row_cmd(ocelot, vcap, row, cmd: VCAP_CMD_READ, sel: VCAP_SEL_ALL);
820 vcap_cache2entry(ocelot, vcap, data: &data);
821 vcap_cache2action(ocelot, vcap, data: &data);
822
823 data.tg_sw = VCAP_TG_FULL;
824 data.type = ES0_ACTION_TYPE_NORMAL;
825 vcap_data_offset_get(vcap, data: &data, ix);
826 data.tg = (data.tg & ~data.tg_mask);
827 if (filter->prio != 0)
828 data.tg |= data.tg_value;
829
830 vcap_key_set(vcap, data: &data, field: VCAP_ES0_IGR_PORT, value: filter->ingress_port.value,
831 mask: filter->ingress_port.mask);
832 vcap_key_set(vcap, data: &data, field: VCAP_ES0_EGR_PORT, value: filter->egress_port.value,
833 mask: filter->egress_port.mask);
834 vcap_key_bit_set(vcap, data: &data, field: VCAP_ES0_L2_MC, val: filter->dmac_mc);
835 vcap_key_bit_set(vcap, data: &data, field: VCAP_ES0_L2_BC, val: filter->dmac_bc);
836 vcap_key_set(vcap, data: &data, field: VCAP_ES0_VID,
837 value: tag->vid.value, mask: tag->vid.mask);
838 vcap_key_set(vcap, data: &data, field: VCAP_ES0_PCP,
839 value: tag->pcp.value[0], mask: tag->pcp.mask[0]);
840
841 es0_action_set(ocelot, data: &data, filter);
842 vcap_data_set(data: data.counter, offset: data.counter_offset,
843 len: vcap->counter_width, value: filter->stats.pkts);
844
845 /* Write row */
846 vcap_entry2cache(ocelot, vcap, data: &data);
847 vcap_action2cache(ocelot, vcap, data: &data);
848 vcap_row_cmd(ocelot, vcap, row, cmd: VCAP_CMD_WRITE, sel: VCAP_SEL_ALL);
849}
850
851static void vcap_entry_get(struct ocelot *ocelot, int ix,
852 struct ocelot_vcap_filter *filter)
853{
854 const struct vcap_props *vcap = &ocelot->vcap[filter->block_id];
855 struct vcap_data data;
856 int row, count;
857 u32 cnt;
858
859 if (filter->block_id == VCAP_ES0)
860 data.tg_sw = VCAP_TG_FULL;
861 else
862 data.tg_sw = VCAP_TG_HALF;
863
864 count = (1 << (data.tg_sw - 1));
865 row = (ix / count);
866 vcap_row_cmd(ocelot, vcap, row, cmd: VCAP_CMD_READ, sel: VCAP_SEL_COUNTER);
867 vcap_cache2action(ocelot, vcap, data: &data);
868 vcap_data_offset_get(vcap, data: &data, ix);
869 cnt = vcap_data_get(data: data.counter, offset: data.counter_offset,
870 len: vcap->counter_width);
871
872 filter->stats.pkts = cnt;
873}
874
875static void vcap_entry_set(struct ocelot *ocelot, int ix,
876 struct ocelot_vcap_filter *filter)
877{
878 if (filter->block_id == VCAP_IS1)
879 return is1_entry_set(ocelot, ix, filter);
880 if (filter->block_id == VCAP_IS2)
881 return is2_entry_set(ocelot, ix, filter);
882 if (filter->block_id == VCAP_ES0)
883 return es0_entry_set(ocelot, ix, filter);
884}
885
886struct vcap_policer_entry {
887 struct list_head list;
888 refcount_t refcount;
889 u32 pol_ix;
890};
891
892int ocelot_vcap_policer_add(struct ocelot *ocelot, u32 pol_ix,
893 struct ocelot_policer *pol)
894{
895 struct qos_policer_conf pp = { 0 };
896 struct vcap_policer_entry *tmp;
897 int ret;
898
899 if (!pol)
900 return -EINVAL;
901
902 pp.mode = MSCC_QOS_RATE_MODE_DATA;
903 pp.pir = pol->rate;
904 pp.pbs = pol->burst;
905
906 list_for_each_entry(tmp, &ocelot->vcap_pol.pol_list, list)
907 if (tmp->pol_ix == pol_ix) {
908 refcount_inc(r: &tmp->refcount);
909 return 0;
910 }
911
912 tmp = kzalloc(size: sizeof(*tmp), GFP_KERNEL);
913 if (!tmp)
914 return -ENOMEM;
915
916 ret = qos_policer_conf_set(ocelot, pol_ix, conf: &pp);
917 if (ret) {
918 kfree(objp: tmp);
919 return ret;
920 }
921
922 tmp->pol_ix = pol_ix;
923 refcount_set(r: &tmp->refcount, n: 1);
924 list_add_tail(new: &tmp->list, head: &ocelot->vcap_pol.pol_list);
925
926 return 0;
927}
928EXPORT_SYMBOL(ocelot_vcap_policer_add);
929
930int ocelot_vcap_policer_del(struct ocelot *ocelot, u32 pol_ix)
931{
932 struct qos_policer_conf pp = {0};
933 struct vcap_policer_entry *tmp, *n;
934 u8 z = 0;
935
936 list_for_each_entry_safe(tmp, n, &ocelot->vcap_pol.pol_list, list)
937 if (tmp->pol_ix == pol_ix) {
938 z = refcount_dec_and_test(r: &tmp->refcount);
939 if (z) {
940 list_del(entry: &tmp->list);
941 kfree(objp: tmp);
942 }
943 }
944
945 if (z) {
946 pp.mode = MSCC_QOS_RATE_MODE_DISABLED;
947 return qos_policer_conf_set(ocelot, pol_ix, conf: &pp);
948 }
949
950 return 0;
951}
952EXPORT_SYMBOL(ocelot_vcap_policer_del);
953
954static int
955ocelot_vcap_filter_add_aux_resources(struct ocelot *ocelot,
956 struct ocelot_vcap_filter *filter,
957 struct netlink_ext_ack *extack)
958{
959 struct ocelot_mirror *m;
960 int ret;
961
962 if (filter->block_id == VCAP_IS2 && filter->action.mirror_ena) {
963 m = ocelot_mirror_get(ocelot, to: filter->egress_port.value,
964 extack);
965 if (IS_ERR(ptr: m))
966 return PTR_ERR(ptr: m);
967 }
968
969 if (filter->block_id == VCAP_IS2 && filter->action.police_ena) {
970 ret = ocelot_vcap_policer_add(ocelot, filter->action.pol_ix,
971 &filter->action.pol);
972 if (ret)
973 return ret;
974 }
975
976 return 0;
977}
978
979static void
980ocelot_vcap_filter_del_aux_resources(struct ocelot *ocelot,
981 struct ocelot_vcap_filter *filter)
982{
983 if (filter->block_id == VCAP_IS2 && filter->action.police_ena)
984 ocelot_vcap_policer_del(ocelot, filter->action.pol_ix);
985
986 if (filter->block_id == VCAP_IS2 && filter->action.mirror_ena)
987 ocelot_mirror_put(ocelot);
988}
989
990static int ocelot_vcap_filter_add_to_block(struct ocelot *ocelot,
991 struct ocelot_vcap_block *block,
992 struct ocelot_vcap_filter *filter,
993 struct netlink_ext_ack *extack)
994{
995 struct list_head *pos = &block->rules;
996 struct ocelot_vcap_filter *tmp;
997 int ret;
998
999 ret = ocelot_vcap_filter_add_aux_resources(ocelot, filter, extack);
1000 if (ret)
1001 return ret;
1002
1003 block->count++;
1004
1005 list_for_each_entry(tmp, &block->rules, list) {
1006 if (filter->prio < tmp->prio) {
1007 pos = &tmp->list;
1008 break;
1009 }
1010 }
1011 list_add_tail(new: &filter->list, head: pos);
1012
1013 return 0;
1014}
1015
1016static bool ocelot_vcap_filter_equal(const struct ocelot_vcap_filter *a,
1017 const struct ocelot_vcap_filter *b)
1018{
1019 return !memcmp(p: &a->id, q: &b->id, size: sizeof(struct ocelot_vcap_id));
1020}
1021
1022static int ocelot_vcap_block_get_filter_index(struct ocelot_vcap_block *block,
1023 struct ocelot_vcap_filter *filter)
1024{
1025 struct ocelot_vcap_filter *tmp;
1026 int index = 0;
1027
1028 list_for_each_entry(tmp, &block->rules, list) {
1029 if (ocelot_vcap_filter_equal(a: filter, b: tmp))
1030 return index;
1031 index++;
1032 }
1033
1034 return -ENOENT;
1035}
1036
1037static struct ocelot_vcap_filter*
1038ocelot_vcap_block_find_filter_by_index(struct ocelot_vcap_block *block,
1039 int index)
1040{
1041 struct ocelot_vcap_filter *tmp;
1042 int i = 0;
1043
1044 list_for_each_entry(tmp, &block->rules, list) {
1045 if (i == index)
1046 return tmp;
1047 ++i;
1048 }
1049
1050 return NULL;
1051}
1052
1053struct ocelot_vcap_filter *
1054ocelot_vcap_block_find_filter_by_id(struct ocelot_vcap_block *block,
1055 unsigned long cookie, bool tc_offload)
1056{
1057 struct ocelot_vcap_filter *filter;
1058
1059 list_for_each_entry(filter, &block->rules, list)
1060 if (filter->id.tc_offload == tc_offload &&
1061 filter->id.cookie == cookie)
1062 return filter;
1063
1064 return NULL;
1065}
1066EXPORT_SYMBOL(ocelot_vcap_block_find_filter_by_id);
1067
1068/* If @on=false, then SNAP, ARP, IP and OAM frames will not match on keys based
1069 * on destination and source MAC addresses, but only on higher-level protocol
1070 * information. The only frame types to match on keys containing MAC addresses
1071 * in this case are non-SNAP, non-ARP, non-IP and non-OAM frames.
1072 *
1073 * If @on=true, then the above frame types (SNAP, ARP, IP and OAM) will match
1074 * on MAC_ETYPE keys such as destination and source MAC on this ingress port.
1075 * However the setting has the side effect of making these frames not matching
1076 * on any _other_ keys than MAC_ETYPE ones.
1077 */
1078static void ocelot_match_all_as_mac_etype(struct ocelot *ocelot, int port,
1079 int lookup, bool on)
1080{
1081 u32 val = 0;
1082
1083 if (on)
1084 val = ANA_PORT_VCAP_S2_CFG_S2_SNAP_DIS(BIT(lookup)) |
1085 ANA_PORT_VCAP_S2_CFG_S2_ARP_DIS(BIT(lookup)) |
1086 ANA_PORT_VCAP_S2_CFG_S2_IP_TCPUDP_DIS(BIT(lookup)) |
1087 ANA_PORT_VCAP_S2_CFG_S2_IP_OTHER_DIS(BIT(lookup)) |
1088 ANA_PORT_VCAP_S2_CFG_S2_OAM_DIS(BIT(lookup));
1089
1090 ocelot_rmw_gix(ocelot, val,
1091 ANA_PORT_VCAP_S2_CFG_S2_SNAP_DIS(BIT(lookup)) |
1092 ANA_PORT_VCAP_S2_CFG_S2_ARP_DIS(BIT(lookup)) |
1093 ANA_PORT_VCAP_S2_CFG_S2_IP_TCPUDP_DIS(BIT(lookup)) |
1094 ANA_PORT_VCAP_S2_CFG_S2_IP_OTHER_DIS(BIT(lookup)) |
1095 ANA_PORT_VCAP_S2_CFG_S2_OAM_DIS(BIT(lookup)),
1096 ANA_PORT_VCAP_S2_CFG, port);
1097}
1098
1099static bool
1100ocelot_vcap_is_problematic_mac_etype(struct ocelot_vcap_filter *filter)
1101{
1102 u16 proto, mask;
1103
1104 if (filter->key_type != OCELOT_VCAP_KEY_ETYPE)
1105 return false;
1106
1107 proto = ntohs(*(__be16 *)filter->key.etype.etype.value);
1108 mask = ntohs(*(__be16 *)filter->key.etype.etype.mask);
1109
1110 /* ETH_P_ALL match, so all protocols below are included */
1111 if (mask == 0)
1112 return true;
1113 if (proto == ETH_P_ARP)
1114 return true;
1115 if (proto == ETH_P_IP)
1116 return true;
1117 if (proto == ETH_P_IPV6)
1118 return true;
1119
1120 return false;
1121}
1122
1123static bool
1124ocelot_vcap_is_problematic_non_mac_etype(struct ocelot_vcap_filter *filter)
1125{
1126 if (filter->key_type == OCELOT_VCAP_KEY_SNAP)
1127 return true;
1128 if (filter->key_type == OCELOT_VCAP_KEY_ARP)
1129 return true;
1130 if (filter->key_type == OCELOT_VCAP_KEY_IPV4)
1131 return true;
1132 if (filter->key_type == OCELOT_VCAP_KEY_IPV6)
1133 return true;
1134 return false;
1135}
1136
1137static bool
1138ocelot_exclusive_mac_etype_filter_rules(struct ocelot *ocelot,
1139 struct ocelot_vcap_filter *filter)
1140{
1141 struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1142 struct ocelot_vcap_filter *tmp;
1143 unsigned long port;
1144 int i;
1145
1146 /* We only have the S2_IP_TCPUDP_DIS set of knobs for VCAP IS2 */
1147 if (filter->block_id != VCAP_IS2)
1148 return true;
1149
1150 if (ocelot_vcap_is_problematic_mac_etype(filter)) {
1151 /* Search for any non-MAC_ETYPE rules on the port */
1152 for (i = 0; i < block->count; i++) {
1153 tmp = ocelot_vcap_block_find_filter_by_index(block, index: i);
1154 if (tmp->ingress_port_mask & filter->ingress_port_mask &&
1155 tmp->lookup == filter->lookup &&
1156 ocelot_vcap_is_problematic_non_mac_etype(filter: tmp))
1157 return false;
1158 }
1159
1160 for_each_set_bit(port, &filter->ingress_port_mask,
1161 ocelot->num_phys_ports)
1162 ocelot_match_all_as_mac_etype(ocelot, port,
1163 lookup: filter->lookup, on: true);
1164 } else if (ocelot_vcap_is_problematic_non_mac_etype(filter)) {
1165 /* Search for any MAC_ETYPE rules on the port */
1166 for (i = 0; i < block->count; i++) {
1167 tmp = ocelot_vcap_block_find_filter_by_index(block, index: i);
1168 if (tmp->ingress_port_mask & filter->ingress_port_mask &&
1169 tmp->lookup == filter->lookup &&
1170 ocelot_vcap_is_problematic_mac_etype(filter: tmp))
1171 return false;
1172 }
1173
1174 for_each_set_bit(port, &filter->ingress_port_mask,
1175 ocelot->num_phys_ports)
1176 ocelot_match_all_as_mac_etype(ocelot, port,
1177 lookup: filter->lookup, on: false);
1178 }
1179
1180 return true;
1181}
1182
1183int ocelot_vcap_filter_add(struct ocelot *ocelot,
1184 struct ocelot_vcap_filter *filter,
1185 struct netlink_ext_ack *extack)
1186{
1187 struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1188 int i, index, ret;
1189
1190 if (!ocelot_exclusive_mac_etype_filter_rules(ocelot, filter)) {
1191 NL_SET_ERR_MSG_MOD(extack,
1192 "Cannot mix MAC_ETYPE with non-MAC_ETYPE rules, use the other IS2 lookup");
1193 return -EBUSY;
1194 }
1195
1196 /* Add filter to the linked list */
1197 ret = ocelot_vcap_filter_add_to_block(ocelot, block, filter, extack);
1198 if (ret)
1199 return ret;
1200
1201 /* Get the index of the inserted filter */
1202 index = ocelot_vcap_block_get_filter_index(block, filter);
1203 if (index < 0)
1204 return index;
1205
1206 /* Move down the rules to make place for the new filter */
1207 for (i = block->count - 1; i > index; i--) {
1208 struct ocelot_vcap_filter *tmp;
1209
1210 tmp = ocelot_vcap_block_find_filter_by_index(block, index: i);
1211 /* Read back the filter's counters before moving it */
1212 vcap_entry_get(ocelot, ix: i - 1, filter: tmp);
1213 vcap_entry_set(ocelot, ix: i, filter: tmp);
1214 }
1215
1216 /* Now insert the new filter */
1217 vcap_entry_set(ocelot, ix: index, filter);
1218 return 0;
1219}
1220EXPORT_SYMBOL(ocelot_vcap_filter_add);
1221
1222static void ocelot_vcap_block_remove_filter(struct ocelot *ocelot,
1223 struct ocelot_vcap_block *block,
1224 struct ocelot_vcap_filter *filter)
1225{
1226 struct ocelot_vcap_filter *tmp, *n;
1227
1228 list_for_each_entry_safe(tmp, n, &block->rules, list) {
1229 if (ocelot_vcap_filter_equal(a: filter, b: tmp)) {
1230 ocelot_vcap_filter_del_aux_resources(ocelot, filter: tmp);
1231 list_del(entry: &tmp->list);
1232 kfree(objp: tmp);
1233 }
1234 }
1235
1236 block->count--;
1237}
1238
1239int ocelot_vcap_filter_del(struct ocelot *ocelot,
1240 struct ocelot_vcap_filter *filter)
1241{
1242 struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1243 struct ocelot_vcap_filter del_filter;
1244 int i, index;
1245
1246 /* Need to inherit the block_id so that vcap_entry_set()
1247 * does not get confused and knows where to install it.
1248 */
1249 memset(&del_filter, 0, sizeof(del_filter));
1250 del_filter.block_id = filter->block_id;
1251
1252 /* Gets index of the filter */
1253 index = ocelot_vcap_block_get_filter_index(block, filter);
1254 if (index < 0)
1255 return index;
1256
1257 /* Delete filter */
1258 ocelot_vcap_block_remove_filter(ocelot, block, filter);
1259
1260 /* Move up all the blocks over the deleted filter */
1261 for (i = index; i < block->count; i++) {
1262 struct ocelot_vcap_filter *tmp;
1263
1264 tmp = ocelot_vcap_block_find_filter_by_index(block, index: i);
1265 /* Read back the filter's counters before moving it */
1266 vcap_entry_get(ocelot, ix: i + 1, filter: tmp);
1267 vcap_entry_set(ocelot, ix: i, filter: tmp);
1268 }
1269
1270 /* Now delete the last filter, because it is duplicated */
1271 vcap_entry_set(ocelot, ix: block->count, filter: &del_filter);
1272
1273 return 0;
1274}
1275EXPORT_SYMBOL(ocelot_vcap_filter_del);
1276
1277int ocelot_vcap_filter_replace(struct ocelot *ocelot,
1278 struct ocelot_vcap_filter *filter)
1279{
1280 struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1281 int index;
1282
1283 index = ocelot_vcap_block_get_filter_index(block, filter);
1284 if (index < 0)
1285 return index;
1286
1287 vcap_entry_set(ocelot, ix: index, filter);
1288
1289 return 0;
1290}
1291EXPORT_SYMBOL(ocelot_vcap_filter_replace);
1292
1293int ocelot_vcap_filter_stats_update(struct ocelot *ocelot,
1294 struct ocelot_vcap_filter *filter)
1295{
1296 struct ocelot_vcap_block *block = &ocelot->block[filter->block_id];
1297 struct ocelot_vcap_filter tmp;
1298 int index;
1299
1300 index = ocelot_vcap_block_get_filter_index(block, filter);
1301 if (index < 0)
1302 return index;
1303
1304 vcap_entry_get(ocelot, ix: index, filter);
1305
1306 /* After we get the result we need to clear the counters */
1307 tmp = *filter;
1308 tmp.stats.pkts = 0;
1309 vcap_entry_set(ocelot, ix: index, filter: &tmp);
1310
1311 return 0;
1312}
1313
1314static void ocelot_vcap_init_one(struct ocelot *ocelot,
1315 const struct vcap_props *vcap)
1316{
1317 struct vcap_data data;
1318
1319 memset(&data, 0, sizeof(data));
1320
1321 vcap_entry2cache(ocelot, vcap, data: &data);
1322 ocelot_target_write(ocelot, vcap->target, vcap->entry_count,
1323 VCAP_CORE_MV_CFG);
1324 vcap_cmd(ocelot, vcap, ix: 0, cmd: VCAP_CMD_INITIALIZE, sel: VCAP_SEL_ENTRY);
1325
1326 vcap_action2cache(ocelot, vcap, data: &data);
1327 ocelot_target_write(ocelot, vcap->target, vcap->action_count,
1328 VCAP_CORE_MV_CFG);
1329 vcap_cmd(ocelot, vcap, ix: 0, cmd: VCAP_CMD_INITIALIZE,
1330 sel: VCAP_SEL_ACTION | VCAP_SEL_COUNTER);
1331}
1332
1333static void ocelot_vcap_detect_constants(struct ocelot *ocelot,
1334 struct vcap_props *vcap)
1335{
1336 int counter_memory_width;
1337 int num_default_actions;
1338 int version;
1339
1340 version = ocelot_target_read(ocelot, vcap->target,
1341 VCAP_CONST_VCAP_VER);
1342 /* Only version 0 VCAP supported for now */
1343 if (WARN_ON(version != 0))
1344 return;
1345
1346 /* Width in bits of type-group field */
1347 vcap->tg_width = ocelot_target_read(ocelot, vcap->target,
1348 VCAP_CONST_ENTRY_TG_WIDTH);
1349 /* Number of subwords per TCAM row */
1350 vcap->sw_count = ocelot_target_read(ocelot, vcap->target,
1351 VCAP_CONST_ENTRY_SWCNT);
1352 /* Number of rows in TCAM. There can be this many full keys, or double
1353 * this number half keys, or 4 times this number quarter keys.
1354 */
1355 vcap->entry_count = ocelot_target_read(ocelot, vcap->target,
1356 VCAP_CONST_ENTRY_CNT);
1357 /* Assuming there are 4 subwords per TCAM row, their layout in the
1358 * actual TCAM (not in the cache) would be:
1359 *
1360 * | SW 3 | TG 3 | SW 2 | TG 2 | SW 1 | TG 1 | SW 0 | TG 0 |
1361 *
1362 * (where SW=subword and TG=Type-Group).
1363 *
1364 * What VCAP_CONST_ENTRY_CNT is giving us is the width of one full TCAM
1365 * row. But when software accesses the TCAM through the cache
1366 * registers, the Type-Group values are written through another set of
1367 * registers VCAP_TG_DAT, and therefore, it appears as though the 4
1368 * subwords are contiguous in the cache memory.
1369 * Important mention: regardless of the number of key entries per row
1370 * (and therefore of key size: 1 full key or 2 half keys or 4 quarter
1371 * keys), software always has to configure 4 Type-Group values. For
1372 * example, in the case of 1 full key, the driver needs to set all 4
1373 * Type-Group to be full key.
1374 *
1375 * For this reason, we need to fix up the value that the hardware is
1376 * giving us. We don't actually care about the width of the entry in
1377 * the TCAM. What we care about is the width of the entry in the cache
1378 * registers, which is how we get to interact with it. And since the
1379 * VCAP_ENTRY_DAT cache registers access only the subwords and not the
1380 * Type-Groups, this means we need to subtract the width of the
1381 * Type-Groups when packing and unpacking key entry data in a TCAM row.
1382 */
1383 vcap->entry_width = ocelot_target_read(ocelot, vcap->target,
1384 VCAP_CONST_ENTRY_WIDTH);
1385 vcap->entry_width -= vcap->tg_width * vcap->sw_count;
1386 num_default_actions = ocelot_target_read(ocelot, vcap->target,
1387 VCAP_CONST_ACTION_DEF_CNT);
1388 vcap->action_count = vcap->entry_count + num_default_actions;
1389 vcap->action_width = ocelot_target_read(ocelot, vcap->target,
1390 VCAP_CONST_ACTION_WIDTH);
1391 /* The width of the counter memory, this is the complete width of all
1392 * counter-fields associated with one full-word entry. There is one
1393 * counter per entry sub-word (see CAP_CORE::ENTRY_SWCNT for number of
1394 * subwords.)
1395 */
1396 vcap->counter_words = vcap->sw_count;
1397 counter_memory_width = ocelot_target_read(ocelot, vcap->target,
1398 VCAP_CONST_CNT_WIDTH);
1399 vcap->counter_width = counter_memory_width / vcap->counter_words;
1400}
1401
1402int ocelot_vcap_init(struct ocelot *ocelot)
1403{
1404 struct qos_policer_conf cpu_drop = {
1405 .mode = MSCC_QOS_RATE_MODE_DATA,
1406 };
1407 int ret, i;
1408
1409 /* Create a policer that will drop the frames for the cpu.
1410 * This policer will be used as action in the acl rules to drop
1411 * frames.
1412 */
1413 ret = qos_policer_conf_set(ocelot, OCELOT_POLICER_DISCARD, conf: &cpu_drop);
1414 if (ret)
1415 return ret;
1416
1417 for (i = 0; i < OCELOT_NUM_VCAP_BLOCKS; i++) {
1418 struct ocelot_vcap_block *block = &ocelot->block[i];
1419 struct vcap_props *vcap = &ocelot->vcap[i];
1420
1421 INIT_LIST_HEAD(list: &block->rules);
1422
1423 ocelot_vcap_detect_constants(ocelot, vcap);
1424 ocelot_vcap_init_one(ocelot, vcap);
1425 }
1426
1427 INIT_LIST_HEAD(list: &ocelot->dummy_rules);
1428 INIT_LIST_HEAD(list: &ocelot->traps);
1429 INIT_LIST_HEAD(list: &ocelot->vcap_pol.pol_list);
1430
1431 return 0;
1432}
1433

source code of linux/drivers/net/ethernet/mscc/ocelot_vcap.c