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1// SPDX-License-Identifier: GPL-2.0-only
2/****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2019 Solarflare Communications Inc.
5 * Copyright 2020-2022 Xilinx Inc.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation, incorporated herein by reference.
10 */
11
12#include <linux/rhashtable.h>
13#include "ef100_nic.h"
14#include "mae.h"
15#include "mcdi.h"
16#include "mcdi_pcol.h"
17#include "mcdi_pcol_mae.h"
18#include "tc_encap_actions.h"
19#include "tc_conntrack.h"
20
21int efx_mae_allocate_mport(struct efx_nic *efx, u32 *id, u32 *label)
22{
23 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_MPORT_ALLOC_ALIAS_OUT_LEN);
24 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MPORT_ALLOC_ALIAS_IN_LEN);
25 size_t outlen;
26 int rc;
27
28 if (WARN_ON_ONCE(!id))
29 return -EINVAL;
30 if (WARN_ON_ONCE(!label))
31 return -EINVAL;
32
33 MCDI_SET_DWORD(inbuf, MAE_MPORT_ALLOC_ALIAS_IN_TYPE,
34 MC_CMD_MAE_MPORT_ALLOC_ALIAS_IN_MPORT_TYPE_ALIAS);
35 MCDI_SET_DWORD(inbuf, MAE_MPORT_ALLOC_ALIAS_IN_DELIVER_MPORT,
36 MAE_MPORT_SELECTOR_ASSIGNED);
37 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MPORT_ALLOC, inbuf, sizeof(inbuf),
38 outbuf, sizeof(outbuf), &outlen);
39 if (rc)
40 return rc;
41 if (outlen < sizeof(outbuf))
42 return -EIO;
43 *id = MCDI_DWORD(outbuf, MAE_MPORT_ALLOC_ALIAS_OUT_MPORT_ID);
44 *label = MCDI_DWORD(outbuf, MAE_MPORT_ALLOC_ALIAS_OUT_LABEL);
45 return 0;
46}
47
48int efx_mae_free_mport(struct efx_nic *efx, u32 id)
49{
50 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MPORT_FREE_IN_LEN);
51
52 BUILD_BUG_ON(MC_CMD_MAE_MPORT_FREE_OUT_LEN);
53 MCDI_SET_DWORD(inbuf, MAE_MPORT_FREE_IN_MPORT_ID, id);
54 return efx_mcdi_rpc(efx, MC_CMD_MAE_MPORT_FREE, inbuf, sizeof(inbuf),
55 NULL, 0, NULL);
56}
57
58void efx_mae_mport_wire(struct efx_nic *efx, u32 *out)
59{
60 efx_dword_t mport;
61
62 EFX_POPULATE_DWORD_2(mport,
63 MAE_MPORT_SELECTOR_TYPE, MAE_MPORT_SELECTOR_TYPE_PPORT,
64 MAE_MPORT_SELECTOR_PPORT_ID, efx->port_num);
65 *out = EFX_DWORD_VAL(mport);
66}
67
68void efx_mae_mport_uplink(struct efx_nic *efx __always_unused, u32 *out)
69{
70 efx_dword_t mport;
71
72 EFX_POPULATE_DWORD_3(mport,
73 MAE_MPORT_SELECTOR_TYPE, MAE_MPORT_SELECTOR_TYPE_FUNC,
74 MAE_MPORT_SELECTOR_FUNC_PF_ID, MAE_MPORT_SELECTOR_FUNC_PF_ID_CALLER,
75 MAE_MPORT_SELECTOR_FUNC_VF_ID, MAE_MPORT_SELECTOR_FUNC_VF_ID_NULL);
76 *out = EFX_DWORD_VAL(mport);
77}
78
79/* Constructs an mport selector from an mport ID, because they're not the same */
80void efx_mae_mport_mport(struct efx_nic *efx __always_unused, u32 mport_id, u32 *out)
81{
82 efx_dword_t mport;
83
84 EFX_POPULATE_DWORD_2(mport,
85 MAE_MPORT_SELECTOR_TYPE, MAE_MPORT_SELECTOR_TYPE_MPORT_ID,
86 MAE_MPORT_SELECTOR_MPORT_ID, mport_id);
87 *out = EFX_DWORD_VAL(mport);
88}
89
90/* id is really only 24 bits wide */
91int efx_mae_fw_lookup_mport(struct efx_nic *efx, u32 selector, u32 *id)
92{
93 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_MPORT_LOOKUP_OUT_LEN);
94 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MPORT_LOOKUP_IN_LEN);
95 size_t outlen;
96 int rc;
97
98 MCDI_SET_DWORD(inbuf, MAE_MPORT_LOOKUP_IN_MPORT_SELECTOR, selector);
99 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MPORT_LOOKUP, inbuf, sizeof(inbuf),
100 outbuf, sizeof(outbuf), &outlen);
101 if (rc)
102 return rc;
103 if (outlen < sizeof(outbuf))
104 return -EIO;
105 *id = MCDI_DWORD(outbuf, MAE_MPORT_LOOKUP_OUT_MPORT_ID);
106 return 0;
107}
108
109int efx_mae_start_counters(struct efx_nic *efx, struct efx_rx_queue *rx_queue)
110{
111 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTERS_STREAM_START_V2_IN_LEN);
112 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_COUNTERS_STREAM_START_OUT_LEN);
113 u32 out_flags;
114 size_t outlen;
115 int rc;
116
117 MCDI_SET_WORD(inbuf, MAE_COUNTERS_STREAM_START_V2_IN_QID,
118 efx_rx_queue_index(rx_queue));
119 MCDI_SET_WORD(inbuf, MAE_COUNTERS_STREAM_START_V2_IN_PACKET_SIZE,
120 efx->net_dev->mtu);
121 MCDI_SET_DWORD(inbuf, MAE_COUNTERS_STREAM_START_V2_IN_COUNTER_TYPES_MASK,
122 BIT(MAE_COUNTER_TYPE_AR) | BIT(MAE_COUNTER_TYPE_CT) |
123 BIT(MAE_COUNTER_TYPE_OR));
124 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTERS_STREAM_START,
125 inbuf, sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
126 if (rc)
127 return rc;
128 if (outlen < sizeof(outbuf))
129 return -EIO;
130 out_flags = MCDI_DWORD(outbuf, MAE_COUNTERS_STREAM_START_OUT_FLAGS);
131 if (out_flags & BIT(MC_CMD_MAE_COUNTERS_STREAM_START_OUT_USES_CREDITS_OFST)) {
132 netif_dbg(efx, drv, efx->net_dev,
133 "MAE counter stream uses credits\n");
134 rx_queue->grant_credits = true;
135 out_flags &= ~BIT(MC_CMD_MAE_COUNTERS_STREAM_START_OUT_USES_CREDITS_OFST);
136 }
137 if (out_flags) {
138 netif_err(efx, drv, efx->net_dev,
139 "MAE counter stream start: unrecognised flags %x\n",
140 out_flags);
141 goto out_stop;
142 }
143 return 0;
144out_stop:
145 efx_mae_stop_counters(efx, rx_queue);
146 return -EOPNOTSUPP;
147}
148
149static bool efx_mae_counters_flushed(u32 *flush_gen, u32 *seen_gen)
150{
151 int i;
152
153 for (i = 0; i < EFX_TC_COUNTER_TYPE_MAX; i++)
154 if ((s32)(flush_gen[i] - seen_gen[i]) > 0)
155 return false;
156 return true;
157}
158
159int efx_mae_stop_counters(struct efx_nic *efx, struct efx_rx_queue *rx_queue)
160{
161 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_COUNTERS_STREAM_STOP_V2_OUT_LENMAX);
162 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTERS_STREAM_STOP_IN_LEN);
163 size_t outlen;
164 int rc, i;
165
166 MCDI_SET_WORD(inbuf, MAE_COUNTERS_STREAM_STOP_IN_QID,
167 efx_rx_queue_index(rx_queue));
168 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTERS_STREAM_STOP,
169 inbuf, sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
170
171 if (rc)
172 return rc;
173
174 netif_dbg(efx, drv, efx->net_dev, "Draining counters:\n");
175 /* Only process received generation counts */
176 for (i = 0; (i < (outlen / 4)) && (i < EFX_TC_COUNTER_TYPE_MAX); i++) {
177 efx->tc->flush_gen[i] = MCDI_ARRAY_DWORD(outbuf,
178 MAE_COUNTERS_STREAM_STOP_V2_OUT_GENERATION_COUNT,
179 i);
180 netif_dbg(efx, drv, efx->net_dev,
181 "\ttype %u, awaiting gen %u\n", i,
182 efx->tc->flush_gen[i]);
183 }
184
185 efx->tc->flush_counters = true;
186
187 /* Drain can take up to 2 seconds owing to FWRIVERHD-2884; whatever
188 * timeout we use, that delay is added to unload on nonresponsive
189 * hardware, so 2500ms seems like a reasonable compromise.
190 */
191 if (!wait_event_timeout(efx->tc->flush_wq,
192 efx_mae_counters_flushed(efx->tc->flush_gen,
193 efx->tc->seen_gen),
194 msecs_to_jiffies(2500)))
195 netif_warn(efx, drv, efx->net_dev,
196 "Failed to drain counters RXQ, FW may be unhappy\n");
197
198 efx->tc->flush_counters = false;
199
200 return rc;
201}
202
203void efx_mae_counters_grant_credits(struct work_struct *work)
204{
205 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS_IN_LEN);
206 struct efx_rx_queue *rx_queue = container_of(work, struct efx_rx_queue,
207 grant_work);
208 struct efx_nic *efx = rx_queue->efx;
209 unsigned int credits;
210
211 BUILD_BUG_ON(MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS_OUT_LEN);
212 credits = READ_ONCE(rx_queue->notified_count) - rx_queue->granted_count;
213 MCDI_SET_DWORD(inbuf, MAE_COUNTERS_STREAM_GIVE_CREDITS_IN_NUM_CREDITS,
214 credits);
215 if (!efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTERS_STREAM_GIVE_CREDITS,
216 inbuf, sizeof(inbuf), NULL, 0, NULL))
217 rx_queue->granted_count += credits;
218}
219
220static int efx_mae_table_get_desc(struct efx_nic *efx,
221 struct efx_tc_table_desc *desc,
222 u32 table_id)
223{
224 MCDI_DECLARE_BUF(outbuf, MC_CMD_TABLE_DESCRIPTOR_OUT_LEN(16));
225 MCDI_DECLARE_BUF(inbuf, MC_CMD_TABLE_DESCRIPTOR_IN_LEN);
226 unsigned int offset = 0, i;
227 size_t outlen;
228 int rc;
229
230 memset(desc, 0, sizeof(*desc));
231
232 MCDI_SET_DWORD(inbuf, TABLE_DESCRIPTOR_IN_TABLE_ID, table_id);
233more:
234 MCDI_SET_DWORD(inbuf, TABLE_DESCRIPTOR_IN_FIRST_FIELDS_INDEX, offset);
235 rc = efx_mcdi_rpc(efx, MC_CMD_TABLE_DESCRIPTOR, inbuf, sizeof(inbuf),
236 outbuf, sizeof(outbuf), &outlen);
237 if (rc)
238 goto fail;
239 if (outlen < MC_CMD_TABLE_DESCRIPTOR_OUT_LEN(1)) {
240 rc = -EIO;
241 goto fail;
242 }
243 if (!offset) { /* first iteration: get metadata */
244 desc->type = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_TYPE);
245 desc->key_width = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_KEY_WIDTH);
246 desc->resp_width = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_RESP_WIDTH);
247 desc->n_keys = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_N_KEY_FIELDS);
248 desc->n_resps = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_N_RESP_FIELDS);
249 desc->n_prios = MCDI_WORD(outbuf, TABLE_DESCRIPTOR_OUT_N_PRIORITIES);
250 desc->flags = MCDI_BYTE(outbuf, TABLE_DESCRIPTOR_OUT_FLAGS);
251 rc = -EOPNOTSUPP;
252 if (desc->flags)
253 goto fail;
254 desc->scheme = MCDI_BYTE(outbuf, TABLE_DESCRIPTOR_OUT_SCHEME);
255 if (desc->scheme)
256 goto fail;
257 rc = -ENOMEM;
258 desc->keys = kcalloc(desc->n_keys,
259 sizeof(struct efx_tc_table_field_fmt),
260 GFP_KERNEL);
261 if (!desc->keys)
262 goto fail;
263 desc->resps = kcalloc(desc->n_resps,
264 sizeof(struct efx_tc_table_field_fmt),
265 GFP_KERNEL);
266 if (!desc->resps)
267 goto fail;
268 }
269 /* FW could have returned more than the 16 field_descrs we
270 * made room for in our outbuf
271 */
272 outlen = min(outlen, sizeof(outbuf));
273 for (i = 0; i + offset < desc->n_keys + desc->n_resps; i++) {
274 struct efx_tc_table_field_fmt *field;
275 MCDI_DECLARE_STRUCT_PTR(fdesc);
276
277 if (outlen < MC_CMD_TABLE_DESCRIPTOR_OUT_LEN(i + 1)) {
278 offset += i;
279 goto more;
280 }
281 if (i + offset < desc->n_keys)
282 field = desc->keys + i + offset;
283 else
284 field = desc->resps + (i + offset - desc->n_keys);
285 fdesc = MCDI_ARRAY_STRUCT_PTR(outbuf,
286 TABLE_DESCRIPTOR_OUT_FIELDS, i);
287 field->field_id = MCDI_STRUCT_WORD(fdesc,
288 TABLE_FIELD_DESCR_FIELD_ID);
289 field->lbn = MCDI_STRUCT_WORD(fdesc, TABLE_FIELD_DESCR_LBN);
290 field->width = MCDI_STRUCT_WORD(fdesc, TABLE_FIELD_DESCR_WIDTH);
291 field->masking = MCDI_STRUCT_BYTE(fdesc, TABLE_FIELD_DESCR_MASK_TYPE);
292 field->scheme = MCDI_STRUCT_BYTE(fdesc, TABLE_FIELD_DESCR_SCHEME);
293 }
294 return 0;
295
296fail:
297 kfree(desc->keys);
298 kfree(desc->resps);
299 return rc;
300}
301
302static int efx_mae_table_hook_find(u16 n_fields,
303 struct efx_tc_table_field_fmt *fields,
304 u16 field_id)
305{
306 unsigned int i;
307
308 for (i = 0; i < n_fields; i++) {
309 if (fields[i].field_id == field_id)
310 return i;
311 }
312 return -EPROTO;
313}
314
315#define TABLE_FIND_KEY(_desc, _id) \
316 efx_mae_table_hook_find((_desc)->n_keys, (_desc)->keys, _id)
317#define TABLE_FIND_RESP(_desc, _id) \
318 efx_mae_table_hook_find((_desc)->n_resps, (_desc)->resps, _id)
319
320#define TABLE_HOOK_KEY(_meta, _name, _mcdi_name) ({ \
321 int _rc = TABLE_FIND_KEY(&_meta->desc, TABLE_FIELD_ID_##_mcdi_name); \
322 \
323 if (_rc > U8_MAX) \
324 _rc = -EOPNOTSUPP; \
325 if (_rc >= 0) { \
326 _meta->keys._name##_idx = _rc; \
327 _rc = 0; \
328 } \
329 _rc; \
330})
331#define TABLE_HOOK_RESP(_meta, _name, _mcdi_name) ({ \
332 int _rc = TABLE_FIND_RESP(&_meta->desc, TABLE_FIELD_ID_##_mcdi_name); \
333 \
334 if (_rc > U8_MAX) \
335 _rc = -EOPNOTSUPP; \
336 if (_rc >= 0) { \
337 _meta->resps._name##_idx = _rc; \
338 _rc = 0; \
339 } \
340 _rc; \
341})
342
343static int efx_mae_table_hook_ct(struct efx_nic *efx,
344 struct efx_tc_table_ct *meta_ct)
345{
346 int rc;
347
348 rc = TABLE_HOOK_KEY(meta_ct, eth_proto, ETHER_TYPE);
349 if (rc)
350 return rc;
351 rc = TABLE_HOOK_KEY(meta_ct, ip_proto, IP_PROTO);
352 if (rc)
353 return rc;
354 rc = TABLE_HOOK_KEY(meta_ct, src_ip, SRC_IP);
355 if (rc)
356 return rc;
357 rc = TABLE_HOOK_KEY(meta_ct, dst_ip, DST_IP);
358 if (rc)
359 return rc;
360 rc = TABLE_HOOK_KEY(meta_ct, l4_sport, SRC_PORT);
361 if (rc)
362 return rc;
363 rc = TABLE_HOOK_KEY(meta_ct, l4_dport, DST_PORT);
364 if (rc)
365 return rc;
366 rc = TABLE_HOOK_KEY(meta_ct, zone, DOMAIN);
367 if (rc)
368 return rc;
369 rc = TABLE_HOOK_RESP(meta_ct, dnat, NAT_DIR);
370 if (rc)
371 return rc;
372 rc = TABLE_HOOK_RESP(meta_ct, nat_ip, NAT_IP);
373 if (rc)
374 return rc;
375 rc = TABLE_HOOK_RESP(meta_ct, l4_natport, NAT_PORT);
376 if (rc)
377 return rc;
378 rc = TABLE_HOOK_RESP(meta_ct, mark, CT_MARK);
379 if (rc)
380 return rc;
381 rc = TABLE_HOOK_RESP(meta_ct, counter_id, COUNTER_ID);
382 if (rc)
383 return rc;
384 meta_ct->hooked = true;
385 return 0;
386}
387
388static void efx_mae_table_free_desc(struct efx_tc_table_desc *desc)
389{
390 kfree(desc->keys);
391 kfree(desc->resps);
392 memset(desc, 0, sizeof(*desc));
393}
394
395static bool efx_mae_check_table_exists(struct efx_nic *efx, u32 tbl_req)
396{
397 MCDI_DECLARE_BUF(outbuf, MC_CMD_TABLE_LIST_OUT_LEN(16));
398 MCDI_DECLARE_BUF(inbuf, MC_CMD_TABLE_LIST_IN_LEN);
399 u32 tbl_id, tbl_total, tbl_cnt, pos = 0;
400 size_t outlen, msg_max;
401 bool ct_tbl = false;
402 int rc, idx;
403
404 msg_max = sizeof(outbuf);
405 efx->tc->meta_ct.hooked = false;
406more:
407 memset(outbuf, 0, sizeof(*outbuf));
408 MCDI_SET_DWORD(inbuf, TABLE_LIST_IN_FIRST_TABLE_ID_INDEX, pos);
409 rc = efx_mcdi_rpc(efx, MC_CMD_TABLE_LIST, inbuf, sizeof(inbuf), outbuf,
410 msg_max, &outlen);
411 if (rc)
412 return false;
413
414 if (outlen < MC_CMD_TABLE_LIST_OUT_LEN(1))
415 return false;
416
417 tbl_total = MCDI_DWORD(outbuf, TABLE_LIST_OUT_N_TABLES);
418 tbl_cnt = MC_CMD_TABLE_LIST_OUT_TABLE_ID_NUM(min(outlen, msg_max));
419
420 for (idx = 0; idx < tbl_cnt; idx++) {
421 tbl_id = MCDI_ARRAY_DWORD(outbuf, TABLE_LIST_OUT_TABLE_ID, idx);
422 if (tbl_id == tbl_req) {
423 ct_tbl = true;
424 break;
425 }
426 }
427
428 pos += tbl_cnt;
429 if (!ct_tbl && pos < tbl_total)
430 goto more;
431
432 return ct_tbl;
433}
434
435int efx_mae_get_tables(struct efx_nic *efx)
436{
437 int rc;
438
439 efx->tc->meta_ct.hooked = false;
440 if (efx_mae_check_table_exists(efx, TABLE_ID_CONNTRACK_TABLE)) {
441 rc = efx_mae_table_get_desc(efx, &efx->tc->meta_ct.desc,
442 TABLE_ID_CONNTRACK_TABLE);
443 if (rc) {
444 pci_info(efx->pci_dev,
445 "FW does not support conntrack desc rc %d\n",
446 rc);
447 return 0;
448 }
449
450 rc = efx_mae_table_hook_ct(efx, &efx->tc->meta_ct);
451 if (rc) {
452 pci_info(efx->pci_dev,
453 "FW does not support conntrack hook rc %d\n",
454 rc);
455 return 0;
456 }
457 } else {
458 pci_info(efx->pci_dev,
459 "FW does not support conntrack table\n");
460 }
461 return 0;
462}
463
464void efx_mae_free_tables(struct efx_nic *efx)
465{
466 efx_mae_table_free_desc(&efx->tc->meta_ct.desc);
467 efx->tc->meta_ct.hooked = false;
468}
469
470static int efx_mae_get_basic_caps(struct efx_nic *efx, struct mae_caps *caps)
471{
472 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_GET_CAPS_OUT_LEN);
473 size_t outlen;
474 int rc;
475
476 BUILD_BUG_ON(MC_CMD_MAE_GET_CAPS_IN_LEN);
477
478 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_GET_CAPS, NULL, 0, outbuf,
479 sizeof(outbuf), &outlen);
480 if (rc)
481 return rc;
482 if (outlen < sizeof(outbuf))
483 return -EIO;
484 caps->match_field_count = MCDI_DWORD(outbuf, MAE_GET_CAPS_OUT_MATCH_FIELD_COUNT);
485 caps->encap_types = MCDI_DWORD(outbuf, MAE_GET_CAPS_OUT_ENCAP_TYPES_SUPPORTED);
486 caps->action_prios = MCDI_DWORD(outbuf, MAE_GET_CAPS_OUT_ACTION_PRIOS);
487 return 0;
488}
489
490static int efx_mae_get_rule_fields(struct efx_nic *efx, u32 cmd,
491 u8 *field_support)
492{
493 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_GET_AR_CAPS_OUT_LEN(MAE_NUM_FIELDS));
494 MCDI_DECLARE_STRUCT_PTR(caps);
495 unsigned int count;
496 size_t outlen;
497 int rc, i;
498
499 /* AR and OR caps MCDIs have identical layout, so we are using the
500 * same code for both.
501 */
502 BUILD_BUG_ON(MC_CMD_MAE_GET_AR_CAPS_OUT_LEN(MAE_NUM_FIELDS) <
503 MC_CMD_MAE_GET_OR_CAPS_OUT_LEN(MAE_NUM_FIELDS));
504 BUILD_BUG_ON(MC_CMD_MAE_GET_AR_CAPS_IN_LEN);
505 BUILD_BUG_ON(MC_CMD_MAE_GET_OR_CAPS_IN_LEN);
506
507 rc = efx_mcdi_rpc(efx, cmd, NULL, 0, outbuf, sizeof(outbuf), &outlen);
508 if (rc)
509 return rc;
510 BUILD_BUG_ON(MC_CMD_MAE_GET_AR_CAPS_OUT_COUNT_OFST !=
511 MC_CMD_MAE_GET_OR_CAPS_OUT_COUNT_OFST);
512 count = MCDI_DWORD(outbuf, MAE_GET_AR_CAPS_OUT_COUNT);
513 memset(field_support, MAE_FIELD_UNSUPPORTED, MAE_NUM_FIELDS);
514 BUILD_BUG_ON(MC_CMD_MAE_GET_AR_CAPS_OUT_FIELD_FLAGS_OFST !=
515 MC_CMD_MAE_GET_OR_CAPS_OUT_FIELD_FLAGS_OFST);
516 caps = _MCDI_DWORD(outbuf, MAE_GET_AR_CAPS_OUT_FIELD_FLAGS);
517 /* We're only interested in the support status enum, not any other
518 * flags, so just extract that from each entry.
519 */
520 for (i = 0; i < count; i++)
521 if (i * sizeof(*outbuf) + MC_CMD_MAE_GET_AR_CAPS_OUT_FIELD_FLAGS_OFST < outlen)
522 field_support[i] = EFX_DWORD_FIELD(caps[i], MAE_FIELD_FLAGS_SUPPORT_STATUS);
523 return 0;
524}
525
526int efx_mae_get_caps(struct efx_nic *efx, struct mae_caps *caps)
527{
528 int rc;
529
530 rc = efx_mae_get_basic_caps(efx, caps);
531 if (rc)
532 return rc;
533 rc = efx_mae_get_rule_fields(efx, MC_CMD_MAE_GET_AR_CAPS,
534 caps->action_rule_fields);
535 if (rc)
536 return rc;
537 return efx_mae_get_rule_fields(efx, MC_CMD_MAE_GET_OR_CAPS,
538 caps->outer_rule_fields);
539}
540
541/* Bit twiddling:
542 * Prefix: 1...110...0
543 * ~: 0...001...1
544 * + 1: 0...010...0 is power of two
545 * so (~x) & ((~x) + 1) == 0. Converse holds also.
546 */
547#define is_prefix_byte(_x) !(((_x) ^ 0xff) & (((_x) ^ 0xff) + 1))
548
549enum mask_type { MASK_ONES, MASK_ZEROES, MASK_PREFIX, MASK_OTHER };
550
551static const char *mask_type_name(enum mask_type typ)
552{
553 switch (typ) {
554 case MASK_ONES:
555 return "all-1s";
556 case MASK_ZEROES:
557 return "all-0s";
558 case MASK_PREFIX:
559 return "prefix";
560 case MASK_OTHER:
561 return "arbitrary";
562 default: /* can't happen */
563 return "unknown";
564 }
565}
566
567/* Checks a (big-endian) bytestring is a bit prefix */
568static enum mask_type classify_mask(const u8 *mask, size_t len)
569{
570 bool zeroes = true; /* All bits seen so far are zeroes */
571 bool ones = true; /* All bits seen so far are ones */
572 bool prefix = true; /* Valid prefix so far */
573 size_t i;
574
575 for (i = 0; i < len; i++) {
576 if (ones) {
577 if (!is_prefix_byte(mask[i]))
578 prefix = false;
579 } else if (mask[i]) {
580 prefix = false;
581 }
582 if (mask[i] != 0xff)
583 ones = false;
584 if (mask[i])
585 zeroes = false;
586 }
587 if (ones)
588 return MASK_ONES;
589 if (zeroes)
590 return MASK_ZEROES;
591 if (prefix)
592 return MASK_PREFIX;
593 return MASK_OTHER;
594}
595
596static int efx_mae_match_check_cap_typ(u8 support, enum mask_type typ)
597{
598 switch (support) {
599 case MAE_FIELD_UNSUPPORTED:
600 case MAE_FIELD_SUPPORTED_MATCH_NEVER:
601 if (typ == MASK_ZEROES)
602 return 0;
603 return -EOPNOTSUPP;
604 case MAE_FIELD_SUPPORTED_MATCH_OPTIONAL:
605 if (typ == MASK_ZEROES)
606 return 0;
607 fallthrough;
608 case MAE_FIELD_SUPPORTED_MATCH_ALWAYS:
609 if (typ == MASK_ONES)
610 return 0;
611 return -EINVAL;
612 case MAE_FIELD_SUPPORTED_MATCH_PREFIX:
613 if (typ == MASK_OTHER)
614 return -EOPNOTSUPP;
615 return 0;
616 case MAE_FIELD_SUPPORTED_MATCH_MASK:
617 return 0;
618 default:
619 return -EIO;
620 }
621}
622
623/* Validate field mask against hardware capabilities. Captures caller's 'rc' */
624#define CHECK(_mcdi, _field) ({ \
625 enum mask_type typ = classify_mask((const u8 *)&mask->_field, \
626 sizeof(mask->_field)); \
627 \
628 rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ ## _mcdi],\
629 typ); \
630 if (rc) \
631 NL_SET_ERR_MSG_FMT_MOD(extack, \
632 "No support for %s mask in field %s", \
633 mask_type_name(typ), #_field); \
634 rc; \
635})
636/* Booleans need special handling */
637#define CHECK_BIT(_mcdi, _field) ({ \
638 enum mask_type typ = mask->_field ? MASK_ONES : MASK_ZEROES; \
639 \
640 rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ ## _mcdi],\
641 typ); \
642 if (rc) \
643 NL_SET_ERR_MSG_FMT_MOD(extack, \
644 "No support for %s mask in field %s", \
645 mask_type_name(typ), #_field); \
646 rc; \
647})
648
649int efx_mae_match_check_caps(struct efx_nic *efx,
650 const struct efx_tc_match_fields *mask,
651 struct netlink_ext_ack *extack)
652{
653 const u8 *supported_fields = efx->tc->caps->action_rule_fields;
654 __be32 ingress_port = cpu_to_be32(mask->ingress_port);
655 enum mask_type ingress_port_mask_type;
656 int rc;
657
658 /* Check for _PREFIX assumes big-endian, so we need to convert */
659 ingress_port_mask_type = classify_mask((const u8 *)&ingress_port,
660 sizeof(ingress_port));
661 rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_INGRESS_PORT],
662 ingress_port_mask_type);
663 if (rc) {
664 NL_SET_ERR_MSG_FMT_MOD(extack, "No support for %s mask in field ingress_port",
665 mask_type_name(ingress_port_mask_type));
666 return rc;
667 }
668 if (CHECK(ETHER_TYPE, eth_proto) ||
669 CHECK(VLAN0_TCI, vlan_tci[0]) ||
670 CHECK(VLAN0_PROTO, vlan_proto[0]) ||
671 CHECK(VLAN1_TCI, vlan_tci[1]) ||
672 CHECK(VLAN1_PROTO, vlan_proto[1]) ||
673 CHECK(ETH_SADDR, eth_saddr) ||
674 CHECK(ETH_DADDR, eth_daddr) ||
675 CHECK(IP_PROTO, ip_proto) ||
676 CHECK(IP_TOS, ip_tos) ||
677 CHECK(IP_TTL, ip_ttl) ||
678 CHECK(SRC_IP4, src_ip) ||
679 CHECK(DST_IP4, dst_ip) ||
680#ifdef CONFIG_IPV6
681 CHECK(SRC_IP6, src_ip6) ||
682 CHECK(DST_IP6, dst_ip6) ||
683#endif
684 CHECK(L4_SPORT, l4_sport) ||
685 CHECK(L4_DPORT, l4_dport) ||
686 CHECK(TCP_FLAGS, tcp_flags) ||
687 CHECK_BIT(TCP_SYN_FIN_RST, tcp_syn_fin_rst) ||
688 CHECK_BIT(IS_IP_FRAG, ip_frag) ||
689 CHECK_BIT(IP_FIRST_FRAG, ip_firstfrag) ||
690 CHECK_BIT(DO_CT, ct_state_trk) ||
691 CHECK_BIT(CT_HIT, ct_state_est) ||
692 CHECK(CT_MARK, ct_mark) ||
693 CHECK(CT_DOMAIN, ct_zone) ||
694 CHECK(RECIRC_ID, recirc_id))
695 return rc;
696 /* Matches on outer fields are done in a separate hardware table,
697 * the Outer Rule table. Thus the Action Rule merely does an
698 * exact match on Outer Rule ID if any outer field matches are
699 * present. The exception is the VNI/VSID (enc_keyid), which is
700 * available to the Action Rule match iff the Outer Rule matched
701 * (and thus identified the encap protocol to use to extract it).
702 */
703 if (efx_tc_match_is_encap(mask)) {
704 rc = efx_mae_match_check_cap_typ(
705 supported_fields[MAE_FIELD_OUTER_RULE_ID],
706 MASK_ONES);
707 if (rc) {
708 NL_SET_ERR_MSG_MOD(extack, "No support for encap rule ID matches");
709 return rc;
710 }
711 if (CHECK(ENC_VNET_ID, enc_keyid))
712 return rc;
713 } else if (mask->enc_keyid) {
714 NL_SET_ERR_MSG_MOD(extack, "Match on enc_keyid requires other encap fields");
715 return -EINVAL;
716 }
717 return 0;
718}
719
720/* Checks for match fields not supported in LHS Outer Rules */
721#define UNSUPPORTED(_field) ({ \
722 enum mask_type typ = classify_mask((const u8 *)&mask->_field, \
723 sizeof(mask->_field)); \
724 \
725 if (typ != MASK_ZEROES) { \
726 NL_SET_ERR_MSG_MOD(extack, "Unsupported match field " #_field);\
727 rc = -EOPNOTSUPP; \
728 } \
729 rc; \
730})
731#define UNSUPPORTED_BIT(_field) ({ \
732 if (mask->_field) { \
733 NL_SET_ERR_MSG_MOD(extack, "Unsupported match field " #_field);\
734 rc = -EOPNOTSUPP; \
735 } \
736 rc; \
737})
738
739/* LHS rules are (normally) inserted in the Outer Rule table, which means
740 * they use ENC_ fields in hardware to match regular (not enc_) fields from
741 * &struct efx_tc_match_fields.
742 */
743int efx_mae_match_check_caps_lhs(struct efx_nic *efx,
744 const struct efx_tc_match_fields *mask,
745 struct netlink_ext_ack *extack)
746{
747 const u8 *supported_fields = efx->tc->caps->outer_rule_fields;
748 __be32 ingress_port = cpu_to_be32(mask->ingress_port);
749 enum mask_type ingress_port_mask_type;
750 int rc;
751
752 /* Check for _PREFIX assumes big-endian, so we need to convert */
753 ingress_port_mask_type = classify_mask((const u8 *)&ingress_port,
754 sizeof(ingress_port));
755 rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_INGRESS_PORT],
756 ingress_port_mask_type);
757 if (rc) {
758 NL_SET_ERR_MSG_FMT_MOD(extack, "No support for %s mask in field %s\n",
759 mask_type_name(ingress_port_mask_type),
760 "ingress_port");
761 return rc;
762 }
763 if (CHECK(ENC_ETHER_TYPE, eth_proto) ||
764 CHECK(ENC_VLAN0_TCI, vlan_tci[0]) ||
765 CHECK(ENC_VLAN0_PROTO, vlan_proto[0]) ||
766 CHECK(ENC_VLAN1_TCI, vlan_tci[1]) ||
767 CHECK(ENC_VLAN1_PROTO, vlan_proto[1]) ||
768 CHECK(ENC_ETH_SADDR, eth_saddr) ||
769 CHECK(ENC_ETH_DADDR, eth_daddr) ||
770 CHECK(ENC_IP_PROTO, ip_proto) ||
771 CHECK(ENC_IP_TOS, ip_tos) ||
772 CHECK(ENC_IP_TTL, ip_ttl) ||
773 CHECK_BIT(ENC_IP_FRAG, ip_frag) ||
774 UNSUPPORTED_BIT(ip_firstfrag) ||
775 CHECK(ENC_SRC_IP4, src_ip) ||
776 CHECK(ENC_DST_IP4, dst_ip) ||
777#ifdef CONFIG_IPV6
778 CHECK(ENC_SRC_IP6, src_ip6) ||
779 CHECK(ENC_DST_IP6, dst_ip6) ||
780#endif
781 CHECK(ENC_L4_SPORT, l4_sport) ||
782 CHECK(ENC_L4_DPORT, l4_dport) ||
783 UNSUPPORTED(tcp_flags) ||
784 CHECK_BIT(TCP_SYN_FIN_RST, tcp_syn_fin_rst))
785 return rc;
786 if (efx_tc_match_is_encap(mask)) {
787 /* can't happen; disallowed for local rules, translated
788 * for foreign rules.
789 */
790 NL_SET_ERR_MSG_MOD(extack, "Unexpected encap match in LHS rule");
791 return -EOPNOTSUPP;
792 }
793 if (UNSUPPORTED(enc_keyid) ||
794 /* Can't filter on conntrack in LHS rules */
795 UNSUPPORTED_BIT(ct_state_trk) ||
796 UNSUPPORTED_BIT(ct_state_est) ||
797 UNSUPPORTED(ct_mark) ||
798 UNSUPPORTED(recirc_id))
799 return rc;
800 return 0;
801}
802#undef UNSUPPORTED
803#undef CHECK_BIT
804#undef CHECK
805
806#define CHECK(_mcdi) ({ \
807 rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ ## _mcdi],\
808 MASK_ONES); \
809 if (rc) \
810 NL_SET_ERR_MSG_FMT_MOD(extack, \
811 "No support for field %s", #_mcdi); \
812 rc; \
813})
814/* Checks that the fields needed for encap-rule matches are supported by the
815 * MAE. All the fields are exact-match, except possibly ENC_IP_TOS.
816 */
817int efx_mae_check_encap_match_caps(struct efx_nic *efx, bool ipv6,
818 u8 ip_tos_mask, __be16 udp_sport_mask,
819 struct netlink_ext_ack *extack)
820{
821 u8 *supported_fields = efx->tc->caps->outer_rule_fields;
822 enum mask_type typ;
823 int rc;
824
825 if (CHECK(ENC_ETHER_TYPE))
826 return rc;
827 if (ipv6) {
828 if (CHECK(ENC_SRC_IP6) ||
829 CHECK(ENC_DST_IP6))
830 return rc;
831 } else {
832 if (CHECK(ENC_SRC_IP4) ||
833 CHECK(ENC_DST_IP4))
834 return rc;
835 }
836 if (CHECK(ENC_L4_DPORT) ||
837 CHECK(ENC_IP_PROTO))
838 return rc;
839 typ = classify_mask((const u8 *)&udp_sport_mask, sizeof(udp_sport_mask));
840 rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ENC_L4_SPORT],
841 typ);
842 if (rc) {
843 NL_SET_ERR_MSG_FMT_MOD(extack, "No support for %s mask in field %s",
844 mask_type_name(typ), "enc_src_port");
845 return rc;
846 }
847 typ = classify_mask(&ip_tos_mask, sizeof(ip_tos_mask));
848 rc = efx_mae_match_check_cap_typ(supported_fields[MAE_FIELD_ENC_IP_TOS],
849 typ);
850 if (rc) {
851 NL_SET_ERR_MSG_FMT_MOD(extack, "No support for %s mask in field %s",
852 mask_type_name(typ), "enc_ip_tos");
853 return rc;
854 }
855 return 0;
856}
857#undef CHECK
858
859int efx_mae_check_encap_type_supported(struct efx_nic *efx, enum efx_encap_type typ)
860{
861 unsigned int bit;
862
863 switch (typ & EFX_ENCAP_TYPES_MASK) {
864 case EFX_ENCAP_TYPE_VXLAN:
865 bit = MC_CMD_MAE_GET_CAPS_OUT_ENCAP_TYPE_VXLAN_LBN;
866 break;
867 case EFX_ENCAP_TYPE_GENEVE:
868 bit = MC_CMD_MAE_GET_CAPS_OUT_ENCAP_TYPE_GENEVE_LBN;
869 break;
870 default:
871 return -EOPNOTSUPP;
872 }
873 if (efx->tc->caps->encap_types & BIT(bit))
874 return 0;
875 return -EOPNOTSUPP;
876}
877
878int efx_mae_allocate_counter(struct efx_nic *efx, struct efx_tc_counter *cnt)
879{
880 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_COUNTER_ALLOC_OUT_LEN(1));
881 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTER_ALLOC_V2_IN_LEN);
882 size_t outlen;
883 int rc;
884
885 if (!cnt)
886 return -EINVAL;
887
888 MCDI_SET_DWORD(inbuf, MAE_COUNTER_ALLOC_V2_IN_REQUESTED_COUNT, 1);
889 MCDI_SET_DWORD(inbuf, MAE_COUNTER_ALLOC_V2_IN_COUNTER_TYPE, cnt->type);
890 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTER_ALLOC, inbuf, sizeof(inbuf),
891 outbuf, sizeof(outbuf), &outlen);
892 if (rc)
893 return rc;
894 /* pcol says this can't happen, since count is 1 */
895 if (outlen < sizeof(outbuf))
896 return -EIO;
897 cnt->fw_id = MCDI_DWORD(outbuf, MAE_COUNTER_ALLOC_OUT_COUNTER_ID);
898 cnt->gen = MCDI_DWORD(outbuf, MAE_COUNTER_ALLOC_OUT_GENERATION_COUNT);
899 return 0;
900}
901
902int efx_mae_free_counter(struct efx_nic *efx, struct efx_tc_counter *cnt)
903{
904 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_COUNTER_FREE_OUT_LEN(1));
905 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_COUNTER_FREE_V2_IN_LEN);
906 size_t outlen;
907 int rc;
908
909 MCDI_SET_DWORD(inbuf, MAE_COUNTER_FREE_V2_IN_COUNTER_ID_COUNT, 1);
910 MCDI_SET_DWORD(inbuf, MAE_COUNTER_FREE_V2_IN_FREE_COUNTER_ID, cnt->fw_id);
911 MCDI_SET_DWORD(inbuf, MAE_COUNTER_FREE_V2_IN_COUNTER_TYPE, cnt->type);
912 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_COUNTER_FREE, inbuf, sizeof(inbuf),
913 outbuf, sizeof(outbuf), &outlen);
914 if (rc)
915 return rc;
916 /* pcol says this can't happen, since count is 1 */
917 if (outlen < sizeof(outbuf))
918 return -EIO;
919 /* FW freed a different ID than we asked for, should also never happen.
920 * Warn because it means we've now got a different idea to the FW of
921 * what counters exist, which could cause mayhem later.
922 */
923 if (WARN_ON(MCDI_DWORD(outbuf, MAE_COUNTER_FREE_OUT_FREED_COUNTER_ID) !=
924 cnt->fw_id))
925 return -EIO;
926 return 0;
927}
928
929static int efx_mae_encap_type_to_mae_type(enum efx_encap_type type)
930{
931 switch (type & EFX_ENCAP_TYPES_MASK) {
932 case EFX_ENCAP_TYPE_NONE:
933 return MAE_MCDI_ENCAP_TYPE_NONE;
934 case EFX_ENCAP_TYPE_VXLAN:
935 return MAE_MCDI_ENCAP_TYPE_VXLAN;
936 case EFX_ENCAP_TYPE_GENEVE:
937 return MAE_MCDI_ENCAP_TYPE_GENEVE;
938 default:
939 return -EOPNOTSUPP;
940 }
941}
942
943int efx_mae_allocate_encap_md(struct efx_nic *efx,
944 struct efx_tc_encap_action *encap)
945{
946 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_LEN(EFX_TC_MAX_ENCAP_HDR));
947 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_LEN);
948 size_t inlen, outlen;
949 int rc;
950
951 rc = efx_mae_encap_type_to_mae_type(encap->type);
952 if (rc < 0)
953 return rc;
954 MCDI_SET_DWORD(inbuf, MAE_ENCAP_HEADER_ALLOC_IN_ENCAP_TYPE, rc);
955 inlen = MC_CMD_MAE_ENCAP_HEADER_ALLOC_IN_LEN(encap->encap_hdr_len);
956 if (WARN_ON(inlen > sizeof(inbuf))) /* can't happen */
957 return -EINVAL;
958 memcpy(MCDI_PTR(inbuf, MAE_ENCAP_HEADER_ALLOC_IN_HDR_DATA),
959 encap->encap_hdr,
960 encap->encap_hdr_len);
961 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ENCAP_HEADER_ALLOC, inbuf,
962 inlen, outbuf, sizeof(outbuf), &outlen);
963 if (rc)
964 return rc;
965 if (outlen < sizeof(outbuf))
966 return -EIO;
967 encap->fw_id = MCDI_DWORD(outbuf, MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID);
968 return 0;
969}
970
971int efx_mae_update_encap_md(struct efx_nic *efx,
972 struct efx_tc_encap_action *encap)
973{
974 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ENCAP_HEADER_UPDATE_IN_LEN(EFX_TC_MAX_ENCAP_HDR));
975 size_t inlen;
976 int rc;
977
978 rc = efx_mae_encap_type_to_mae_type(encap->type);
979 if (rc < 0)
980 return rc;
981 MCDI_SET_DWORD(inbuf, MAE_ENCAP_HEADER_UPDATE_IN_ENCAP_TYPE, rc);
982 MCDI_SET_DWORD(inbuf, MAE_ENCAP_HEADER_UPDATE_IN_EH_ID,
983 encap->fw_id);
984 inlen = MC_CMD_MAE_ENCAP_HEADER_UPDATE_IN_LEN(encap->encap_hdr_len);
985 if (WARN_ON(inlen > sizeof(inbuf))) /* can't happen */
986 return -EINVAL;
987 memcpy(MCDI_PTR(inbuf, MAE_ENCAP_HEADER_UPDATE_IN_HDR_DATA),
988 encap->encap_hdr,
989 encap->encap_hdr_len);
990
991 BUILD_BUG_ON(MC_CMD_MAE_ENCAP_HEADER_UPDATE_OUT_LEN != 0);
992 return efx_mcdi_rpc(efx, MC_CMD_MAE_ENCAP_HEADER_UPDATE, inbuf,
993 inlen, NULL, 0, NULL);
994}
995
996int efx_mae_free_encap_md(struct efx_nic *efx,
997 struct efx_tc_encap_action *encap)
998{
999 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ENCAP_HEADER_FREE_OUT_LEN(1));
1000 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ENCAP_HEADER_FREE_IN_LEN(1));
1001 size_t outlen;
1002 int rc;
1003
1004 MCDI_SET_DWORD(inbuf, MAE_ENCAP_HEADER_FREE_IN_EH_ID, encap->fw_id);
1005 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ENCAP_HEADER_FREE, inbuf,
1006 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
1007 if (rc)
1008 return rc;
1009 if (outlen < sizeof(outbuf))
1010 return -EIO;
1011 /* FW freed a different ID than we asked for, should also never happen.
1012 * Warn because it means we've now got a different idea to the FW of
1013 * what encap_mds exist, which could cause mayhem later.
1014 */
1015 if (WARN_ON(MCDI_DWORD(outbuf, MAE_ENCAP_HEADER_FREE_OUT_FREED_EH_ID) != encap->fw_id))
1016 return -EIO;
1017 /* We're probably about to free @encap, but let's just make sure its
1018 * fw_id is blatted so that it won't look valid if it leaks out.
1019 */
1020 encap->fw_id = MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID_NULL;
1021 return 0;
1022}
1023
1024int efx_mae_lookup_mport(struct efx_nic *efx, u32 vf_idx, u32 *id)
1025{
1026 struct ef100_nic_data *nic_data = efx->nic_data;
1027 struct efx_mae *mae = efx->mae;
1028 struct rhashtable_iter walk;
1029 struct mae_mport_desc *m;
1030 int rc = -ENOENT;
1031
1032 rhashtable_walk_enter(&mae->mports_ht, &walk);
1033 rhashtable_walk_start(&walk);
1034 while ((m = rhashtable_walk_next(&walk)) != NULL) {
1035 if (m->mport_type == MAE_MPORT_DESC_MPORT_TYPE_VNIC &&
1036 m->interface_idx == nic_data->local_mae_intf &&
1037 m->pf_idx == 0 &&
1038 m->vf_idx == vf_idx) {
1039 *id = m->mport_id;
1040 rc = 0;
1041 break;
1042 }
1043 }
1044 rhashtable_walk_stop(&walk);
1045 rhashtable_walk_exit(&walk);
1046 return rc;
1047}
1048
1049static bool efx_mae_asl_id(u32 id)
1050{
1051 return !!(id & BIT(31));
1052}
1053
1054/* mport handling */
1055static const struct rhashtable_params efx_mae_mports_ht_params = {
1056 .key_len = sizeof(u32),
1057 .key_offset = offsetof(struct mae_mport_desc, mport_id),
1058 .head_offset = offsetof(struct mae_mport_desc, linkage),
1059};
1060
1061struct mae_mport_desc *efx_mae_get_mport(struct efx_nic *efx, u32 mport_id)
1062{
1063 return rhashtable_lookup_fast(&efx->mae->mports_ht, &mport_id,
1064 efx_mae_mports_ht_params);
1065}
1066
1067static int efx_mae_add_mport(struct efx_nic *efx, struct mae_mport_desc *desc)
1068{
1069 struct efx_mae *mae = efx->mae;
1070 int rc;
1071
1072 rc = rhashtable_insert_fast(&mae->mports_ht, &desc->linkage,
1073 efx_mae_mports_ht_params);
1074
1075 if (rc) {
1076 pci_err(efx->pci_dev, "Failed to insert MPORT %08x, rc %d\n",
1077 desc->mport_id, rc);
1078 kfree(desc);
1079 return rc;
1080 }
1081
1082 return rc;
1083}
1084
1085void efx_mae_remove_mport(void *desc, void *arg)
1086{
1087 struct mae_mport_desc *mport = desc;
1088
1089 synchronize_rcu();
1090 kfree(mport);
1091}
1092
1093static int efx_mae_process_mport(struct efx_nic *efx,
1094 struct mae_mport_desc *desc)
1095{
1096 struct ef100_nic_data *nic_data = efx->nic_data;
1097 struct mae_mport_desc *mport;
1098
1099 mport = efx_mae_get_mport(efx, desc->mport_id);
1100 if (!IS_ERR_OR_NULL(mport)) {
1101 netif_err(efx, drv, efx->net_dev,
1102 "mport with id %u does exist!!!\n", desc->mport_id);
1103 return -EEXIST;
1104 }
1105
1106 if (nic_data->have_own_mport &&
1107 desc->mport_id == nic_data->own_mport) {
1108 WARN_ON(desc->mport_type != MAE_MPORT_DESC_MPORT_TYPE_VNIC);
1109 WARN_ON(desc->vnic_client_type !=
1110 MAE_MPORT_DESC_VNIC_CLIENT_TYPE_FUNCTION);
1111 nic_data->local_mae_intf = desc->interface_idx;
1112 nic_data->have_local_intf = true;
1113 pci_dbg(efx->pci_dev, "MAE interface_idx is %u\n",
1114 nic_data->local_mae_intf);
1115 }
1116
1117 return efx_mae_add_mport(efx, desc);
1118}
1119
1120#define MCDI_MPORT_JOURNAL_LEN \
1121 ALIGN(MC_CMD_MAE_MPORT_READ_JOURNAL_OUT_LENMAX_MCDI2, 4)
1122
1123int efx_mae_enumerate_mports(struct efx_nic *efx)
1124{
1125 efx_dword_t *outbuf = kzalloc(MCDI_MPORT_JOURNAL_LEN, GFP_KERNEL);
1126 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MPORT_READ_JOURNAL_IN_LEN);
1127 MCDI_DECLARE_STRUCT_PTR(desc);
1128 size_t outlen, stride, count;
1129 int rc = 0, i;
1130
1131 if (!outbuf)
1132 return -ENOMEM;
1133 do {
1134 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MPORT_READ_JOURNAL, inbuf,
1135 sizeof(inbuf), outbuf,
1136 MCDI_MPORT_JOURNAL_LEN, &outlen);
1137 if (rc)
1138 goto fail;
1139 if (outlen < MC_CMD_MAE_MPORT_READ_JOURNAL_OUT_MPORT_DESC_DATA_OFST) {
1140 rc = -EIO;
1141 goto fail;
1142 }
1143 count = MCDI_DWORD(outbuf, MAE_MPORT_READ_JOURNAL_OUT_MPORT_DESC_COUNT);
1144 if (!count)
1145 continue; /* not break; we want to look at MORE flag */
1146 stride = MCDI_DWORD(outbuf, MAE_MPORT_READ_JOURNAL_OUT_SIZEOF_MPORT_DESC);
1147 if (stride < MAE_MPORT_DESC_LEN) {
1148 rc = -EIO;
1149 goto fail;
1150 }
1151 if (outlen < MC_CMD_MAE_MPORT_READ_JOURNAL_OUT_LEN(count * stride)) {
1152 rc = -EIO;
1153 goto fail;
1154 }
1155
1156 for (i = 0; i < count; i++) {
1157 struct mae_mport_desc *d;
1158
1159 d = kzalloc(sizeof(*d), GFP_KERNEL);
1160 if (!d) {
1161 rc = -ENOMEM;
1162 goto fail;
1163 }
1164
1165 desc = (efx_dword_t *)
1166 _MCDI_PTR(outbuf, MC_CMD_MAE_MPORT_READ_JOURNAL_OUT_MPORT_DESC_DATA_OFST +
1167 i * stride);
1168 d->mport_id = MCDI_STRUCT_DWORD(desc, MAE_MPORT_DESC_MPORT_ID);
1169 d->flags = MCDI_STRUCT_DWORD(desc, MAE_MPORT_DESC_FLAGS);
1170 d->caller_flags = MCDI_STRUCT_DWORD(desc,
1171 MAE_MPORT_DESC_CALLER_FLAGS);
1172 d->mport_type = MCDI_STRUCT_DWORD(desc,
1173 MAE_MPORT_DESC_MPORT_TYPE);
1174 switch (d->mport_type) {
1175 case MAE_MPORT_DESC_MPORT_TYPE_NET_PORT:
1176 d->port_idx = MCDI_STRUCT_DWORD(desc,
1177 MAE_MPORT_DESC_NET_PORT_IDX);
1178 break;
1179 case MAE_MPORT_DESC_MPORT_TYPE_ALIAS:
1180 d->alias_mport_id = MCDI_STRUCT_DWORD(desc,
1181 MAE_MPORT_DESC_ALIAS_DELIVER_MPORT_ID);
1182 break;
1183 case MAE_MPORT_DESC_MPORT_TYPE_VNIC:
1184 d->vnic_client_type = MCDI_STRUCT_DWORD(desc,
1185 MAE_MPORT_DESC_VNIC_CLIENT_TYPE);
1186 d->interface_idx = MCDI_STRUCT_DWORD(desc,
1187 MAE_MPORT_DESC_VNIC_FUNCTION_INTERFACE);
1188 d->pf_idx = MCDI_STRUCT_WORD(desc,
1189 MAE_MPORT_DESC_VNIC_FUNCTION_PF_IDX);
1190 d->vf_idx = MCDI_STRUCT_WORD(desc,
1191 MAE_MPORT_DESC_VNIC_FUNCTION_VF_IDX);
1192 break;
1193 default:
1194 /* Unknown mport_type, just accept it */
1195 break;
1196 }
1197 rc = efx_mae_process_mport(efx, d);
1198 /* Any failure will be due to memory allocation faiure,
1199 * so there is no point to try subsequent entries.
1200 */
1201 if (rc)
1202 goto fail;
1203 }
1204 } while (MCDI_FIELD(outbuf, MAE_MPORT_READ_JOURNAL_OUT, MORE) &&
1205 !WARN_ON(!count));
1206fail:
1207 kfree(outbuf);
1208 return rc;
1209}
1210
1211/**
1212 * efx_mae_allocate_pedit_mac() - allocate pedit MAC address in HW.
1213 * @efx: NIC we're installing a pedit MAC address on
1214 * @ped: pedit MAC action to be installed
1215 *
1216 * Attempts to install @ped in HW and populates its id with an index of this
1217 * entry in the firmware MAC address table on success.
1218 *
1219 * Return: negative value on error, 0 in success.
1220 */
1221int efx_mae_allocate_pedit_mac(struct efx_nic *efx,
1222 struct efx_tc_mac_pedit_action *ped)
1223{
1224 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_MAC_ADDR_ALLOC_OUT_LEN);
1225 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MAC_ADDR_ALLOC_IN_LEN);
1226 size_t outlen;
1227 int rc;
1228
1229 BUILD_BUG_ON(MC_CMD_MAE_MAC_ADDR_ALLOC_IN_MAC_ADDR_LEN !=
1230 sizeof(ped->h_addr));
1231 memcpy(MCDI_PTR(inbuf, MAE_MAC_ADDR_ALLOC_IN_MAC_ADDR), ped->h_addr,
1232 sizeof(ped->h_addr));
1233 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MAC_ADDR_ALLOC, inbuf, sizeof(inbuf),
1234 outbuf, sizeof(outbuf), &outlen);
1235 if (rc)
1236 return rc;
1237 if (outlen < sizeof(outbuf))
1238 return -EIO;
1239 ped->fw_id = MCDI_DWORD(outbuf, MAE_MAC_ADDR_ALLOC_OUT_MAC_ID);
1240 return 0;
1241}
1242
1243/**
1244 * efx_mae_free_pedit_mac() - free pedit MAC address in HW.
1245 * @efx: NIC we're installing a pedit MAC address on
1246 * @ped: pedit MAC action that needs to be freed
1247 *
1248 * Frees @ped in HW, check that firmware did not free a different one and clears
1249 * the id (which denotes the index of the entry in the MAC address table).
1250 */
1251void efx_mae_free_pedit_mac(struct efx_nic *efx,
1252 struct efx_tc_mac_pedit_action *ped)
1253{
1254 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_MAC_ADDR_FREE_OUT_LEN(1));
1255 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_MAC_ADDR_FREE_IN_LEN(1));
1256 size_t outlen;
1257 int rc;
1258
1259 MCDI_SET_DWORD(inbuf, MAE_MAC_ADDR_FREE_IN_MAC_ID, ped->fw_id);
1260 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_MAC_ADDR_FREE, inbuf,
1261 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
1262 if (rc || outlen < sizeof(outbuf))
1263 return;
1264 /* FW freed a different ID than we asked for, should also never happen.
1265 * Warn because it means we've now got a different idea to the FW of
1266 * what MAC addresses exist, which could cause mayhem later.
1267 */
1268 if (WARN_ON(MCDI_DWORD(outbuf, MAE_MAC_ADDR_FREE_OUT_FREED_MAC_ID) != ped->fw_id))
1269 return;
1270 /* We're probably about to free @ped, but let's just make sure its
1271 * fw_id is blatted so that it won't look valid if it leaks out.
1272 */
1273 ped->fw_id = MC_CMD_MAE_MAC_ADDR_ALLOC_OUT_MAC_ID_NULL;
1274}
1275
1276int efx_mae_alloc_action_set(struct efx_nic *efx, struct efx_tc_action_set *act)
1277{
1278 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_SET_ALLOC_OUT_LEN);
1279 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_SET_ALLOC_IN_LEN);
1280 size_t outlen;
1281 int rc;
1282
1283 MCDI_POPULATE_DWORD_5(inbuf, MAE_ACTION_SET_ALLOC_IN_FLAGS,
1284 MAE_ACTION_SET_ALLOC_IN_VLAN_PUSH, act->vlan_push,
1285 MAE_ACTION_SET_ALLOC_IN_VLAN_POP, act->vlan_pop,
1286 MAE_ACTION_SET_ALLOC_IN_DECAP, act->decap,
1287 MAE_ACTION_SET_ALLOC_IN_DO_NAT, act->do_nat,
1288 MAE_ACTION_SET_ALLOC_IN_DO_DECR_IP_TTL,
1289 act->do_ttl_dec);
1290
1291 if (act->src_mac)
1292 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_SRC_MAC_ID,
1293 act->src_mac->fw_id);
1294 else
1295 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_SRC_MAC_ID,
1296 MC_CMD_MAE_MAC_ADDR_ALLOC_OUT_MAC_ID_NULL);
1297
1298 if (act->dst_mac)
1299 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_DST_MAC_ID,
1300 act->dst_mac->fw_id);
1301 else
1302 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_DST_MAC_ID,
1303 MC_CMD_MAE_MAC_ADDR_ALLOC_OUT_MAC_ID_NULL);
1304
1305 if (act->count && !WARN_ON(!act->count->cnt))
1306 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_COUNTER_ID,
1307 act->count->cnt->fw_id);
1308 else
1309 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_COUNTER_ID,
1310 MC_CMD_MAE_COUNTER_ALLOC_OUT_COUNTER_ID_NULL);
1311 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_COUNTER_LIST_ID,
1312 MC_CMD_MAE_COUNTER_LIST_ALLOC_OUT_COUNTER_LIST_ID_NULL);
1313 if (act->vlan_push) {
1314 MCDI_SET_WORD_BE(inbuf, MAE_ACTION_SET_ALLOC_IN_VLAN0_TCI_BE,
1315 act->vlan_tci[0]);
1316 MCDI_SET_WORD_BE(inbuf, MAE_ACTION_SET_ALLOC_IN_VLAN0_PROTO_BE,
1317 act->vlan_proto[0]);
1318 }
1319 if (act->vlan_push >= 2) {
1320 MCDI_SET_WORD_BE(inbuf, MAE_ACTION_SET_ALLOC_IN_VLAN1_TCI_BE,
1321 act->vlan_tci[1]);
1322 MCDI_SET_WORD_BE(inbuf, MAE_ACTION_SET_ALLOC_IN_VLAN1_PROTO_BE,
1323 act->vlan_proto[1]);
1324 }
1325 if (act->encap_md)
1326 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_ENCAP_HEADER_ID,
1327 act->encap_md->fw_id);
1328 else
1329 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_ENCAP_HEADER_ID,
1330 MC_CMD_MAE_ENCAP_HEADER_ALLOC_OUT_ENCAP_HEADER_ID_NULL);
1331 if (act->deliver)
1332 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_ALLOC_IN_DELIVER,
1333 act->dest_mport);
1334 BUILD_BUG_ON(MAE_MPORT_SELECTOR_NULL);
1335 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_SET_ALLOC, inbuf, sizeof(inbuf),
1336 outbuf, sizeof(outbuf), &outlen);
1337 if (rc)
1338 return rc;
1339 if (outlen < sizeof(outbuf))
1340 return -EIO;
1341 act->fw_id = MCDI_DWORD(outbuf, MAE_ACTION_SET_ALLOC_OUT_AS_ID);
1342 /* We rely on the high bit of AS IDs always being clear.
1343 * The firmware API guarantees this, but let's check it ourselves.
1344 */
1345 if (WARN_ON_ONCE(efx_mae_asl_id(act->fw_id))) {
1346 efx_mae_free_action_set(efx, act->fw_id);
1347 return -EIO;
1348 }
1349 return 0;
1350}
1351
1352int efx_mae_free_action_set(struct efx_nic *efx, u32 fw_id)
1353{
1354 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_SET_FREE_OUT_LEN(1));
1355 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_SET_FREE_IN_LEN(1));
1356 size_t outlen;
1357 int rc;
1358
1359 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_FREE_IN_AS_ID, fw_id);
1360 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_SET_FREE, inbuf, sizeof(inbuf),
1361 outbuf, sizeof(outbuf), &outlen);
1362 if (rc)
1363 return rc;
1364 if (outlen < sizeof(outbuf))
1365 return -EIO;
1366 /* FW freed a different ID than we asked for, should never happen.
1367 * Warn because it means we've now got a different idea to the FW of
1368 * what action-sets exist, which could cause mayhem later.
1369 */
1370 if (WARN_ON(MCDI_DWORD(outbuf, MAE_ACTION_SET_FREE_OUT_FREED_AS_ID) != fw_id))
1371 return -EIO;
1372 return 0;
1373}
1374
1375int efx_mae_alloc_action_set_list(struct efx_nic *efx,
1376 struct efx_tc_action_set_list *acts)
1377{
1378 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_LEN);
1379 struct efx_tc_action_set *act;
1380 size_t inlen, outlen, i = 0;
1381 efx_dword_t *inbuf;
1382 int rc;
1383
1384 list_for_each_entry(act, &acts->list, list)
1385 i++;
1386 if (i == 0)
1387 return -EINVAL;
1388 if (i == 1) {
1389 /* Don't wrap an ASL around a single AS, just use the AS_ID
1390 * directly. ASLs are a more limited resource.
1391 */
1392 act = list_first_entry(&acts->list, struct efx_tc_action_set, list);
1393 acts->fw_id = act->fw_id;
1394 return 0;
1395 }
1396 if (i > MC_CMD_MAE_ACTION_SET_LIST_ALLOC_IN_AS_IDS_MAXNUM_MCDI2)
1397 return -EOPNOTSUPP; /* Too many actions */
1398 inlen = MC_CMD_MAE_ACTION_SET_LIST_ALLOC_IN_LEN(i);
1399 inbuf = kzalloc(inlen, GFP_KERNEL);
1400 if (!inbuf)
1401 return -ENOMEM;
1402 i = 0;
1403 list_for_each_entry(act, &acts->list, list) {
1404 MCDI_SET_ARRAY_DWORD(inbuf, MAE_ACTION_SET_LIST_ALLOC_IN_AS_IDS,
1405 i, act->fw_id);
1406 i++;
1407 }
1408 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_LIST_ALLOC_IN_COUNT, i);
1409 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_SET_LIST_ALLOC, inbuf, inlen,
1410 outbuf, sizeof(outbuf), &outlen);
1411 if (rc)
1412 goto out_free;
1413 if (outlen < sizeof(outbuf)) {
1414 rc = -EIO;
1415 goto out_free;
1416 }
1417 acts->fw_id = MCDI_DWORD(outbuf, MAE_ACTION_SET_LIST_ALLOC_OUT_ASL_ID);
1418 /* We rely on the high bit of ASL IDs always being set.
1419 * The firmware API guarantees this, but let's check it ourselves.
1420 */
1421 if (WARN_ON_ONCE(!efx_mae_asl_id(acts->fw_id))) {
1422 efx_mae_free_action_set_list(efx, acts);
1423 rc = -EIO;
1424 }
1425out_free:
1426 kfree(inbuf);
1427 return rc;
1428}
1429
1430int efx_mae_free_action_set_list(struct efx_nic *efx,
1431 struct efx_tc_action_set_list *acts)
1432{
1433 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_SET_LIST_FREE_OUT_LEN(1));
1434 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_SET_LIST_FREE_IN_LEN(1));
1435 size_t outlen;
1436 int rc;
1437
1438 /* If this is just an AS_ID with no ASL wrapper, then there is
1439 * nothing for us to free. (The AS will be freed later.)
1440 */
1441 if (efx_mae_asl_id(acts->fw_id)) {
1442 MCDI_SET_DWORD(inbuf, MAE_ACTION_SET_LIST_FREE_IN_ASL_ID,
1443 acts->fw_id);
1444 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_SET_LIST_FREE, inbuf,
1445 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
1446 if (rc)
1447 return rc;
1448 if (outlen < sizeof(outbuf))
1449 return -EIO;
1450 /* FW freed a different ID than we asked for, should never happen.
1451 * Warn because it means we've now got a different idea to the FW of
1452 * what action-set-lists exist, which could cause mayhem later.
1453 */
1454 if (WARN_ON(MCDI_DWORD(outbuf, MAE_ACTION_SET_LIST_FREE_OUT_FREED_ASL_ID) != acts->fw_id))
1455 return -EIO;
1456 }
1457 /* We're probably about to free @acts, but let's just make sure its
1458 * fw_id is blatted so that it won't look valid if it leaks out.
1459 */
1460 acts->fw_id = MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_ACTION_SET_LIST_ID_NULL;
1461 return 0;
1462}
1463
1464int efx_mae_register_encap_match(struct efx_nic *efx,
1465 struct efx_tc_encap_match *encap)
1466{
1467 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_OUTER_RULE_INSERT_IN_LEN(MAE_ENC_FIELD_PAIRS_LEN));
1468 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_OUTER_RULE_INSERT_OUT_LEN);
1469 MCDI_DECLARE_STRUCT_PTR(match_crit);
1470 size_t outlen;
1471 int rc;
1472
1473 rc = efx_mae_encap_type_to_mae_type(encap->tun_type);
1474 if (rc < 0)
1475 return rc;
1476 match_crit = _MCDI_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_FIELD_MATCH_CRITERIA);
1477 /* The struct contains IP src and dst, and udp dport.
1478 * So we actually need to filter on IP src and dst, L4 dport, and
1479 * ipproto == udp.
1480 */
1481 MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_ENCAP_TYPE, rc);
1482#ifdef CONFIG_IPV6
1483 if (encap->src_ip | encap->dst_ip) {
1484#endif
1485 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP4_BE,
1486 encap->src_ip);
1487 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP4_BE_MASK,
1488 ~(__be32)0);
1489 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP4_BE,
1490 encap->dst_ip);
1491 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP4_BE_MASK,
1492 ~(__be32)0);
1493 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE,
1494 htons(ETH_P_IP));
1495#ifdef CONFIG_IPV6
1496 } else {
1497 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP6_BE),
1498 &encap->src_ip6, sizeof(encap->src_ip6));
1499 memset(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP6_BE_MASK),
1500 0xff, sizeof(encap->src_ip6));
1501 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP6_BE),
1502 &encap->dst_ip6, sizeof(encap->dst_ip6));
1503 memset(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP6_BE_MASK),
1504 0xff, sizeof(encap->dst_ip6));
1505 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE,
1506 htons(ETH_P_IPV6));
1507 }
1508#endif
1509 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE_MASK,
1510 ~(__be16)0);
1511 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE,
1512 encap->udp_dport);
1513 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE_MASK,
1514 ~(__be16)0);
1515 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE,
1516 encap->udp_sport);
1517 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE_MASK,
1518 encap->udp_sport_mask);
1519 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_PROTO, IPPROTO_UDP);
1520 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_PROTO_MASK, ~0);
1521 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TOS,
1522 encap->ip_tos);
1523 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TOS_MASK,
1524 encap->ip_tos_mask);
1525 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_OUTER_RULE_INSERT, inbuf,
1526 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
1527 if (rc)
1528 return rc;
1529 if (outlen < sizeof(outbuf))
1530 return -EIO;
1531 encap->fw_id = MCDI_DWORD(outbuf, MAE_OUTER_RULE_INSERT_OUT_OR_ID);
1532 return 0;
1533}
1534
1535int efx_mae_unregister_encap_match(struct efx_nic *efx,
1536 struct efx_tc_encap_match *encap)
1537{
1538 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_OUTER_RULE_REMOVE_OUT_LEN(1));
1539 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_OUTER_RULE_REMOVE_IN_LEN(1));
1540 size_t outlen;
1541 int rc;
1542
1543 MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_REMOVE_IN_OR_ID, encap->fw_id);
1544 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_OUTER_RULE_REMOVE, inbuf,
1545 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
1546 if (rc)
1547 return rc;
1548 if (outlen < sizeof(outbuf))
1549 return -EIO;
1550 /* FW freed a different ID than we asked for, should also never happen.
1551 * Warn because it means we've now got a different idea to the FW of
1552 * what encap_mds exist, which could cause mayhem later.
1553 */
1554 if (WARN_ON(MCDI_DWORD(outbuf, MAE_OUTER_RULE_REMOVE_OUT_REMOVED_OR_ID) != encap->fw_id))
1555 return -EIO;
1556 /* We're probably about to free @encap, but let's just make sure its
1557 * fw_id is blatted so that it won't look valid if it leaks out.
1558 */
1559 encap->fw_id = MC_CMD_MAE_OUTER_RULE_INSERT_OUT_OUTER_RULE_ID_NULL;
1560 return 0;
1561}
1562
1563static int efx_mae_populate_lhs_match_criteria(MCDI_DECLARE_STRUCT_PTR(match_crit),
1564 const struct efx_tc_match *match)
1565{
1566 if (match->mask.ingress_port) {
1567 if (~match->mask.ingress_port)
1568 return -EOPNOTSUPP;
1569 MCDI_STRUCT_SET_DWORD(match_crit,
1570 MAE_ENC_FIELD_PAIRS_INGRESS_MPORT_SELECTOR,
1571 match->value.ingress_port);
1572 }
1573 MCDI_STRUCT_SET_DWORD(match_crit, MAE_ENC_FIELD_PAIRS_INGRESS_MPORT_SELECTOR_MASK,
1574 match->mask.ingress_port);
1575 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE,
1576 match->value.eth_proto);
1577 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETHER_TYPE_BE_MASK,
1578 match->mask.eth_proto);
1579 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN0_TCI_BE,
1580 match->value.vlan_tci[0]);
1581 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN0_TCI_BE_MASK,
1582 match->mask.vlan_tci[0]);
1583 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN0_PROTO_BE,
1584 match->value.vlan_proto[0]);
1585 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN0_PROTO_BE_MASK,
1586 match->mask.vlan_proto[0]);
1587 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN1_TCI_BE,
1588 match->value.vlan_tci[1]);
1589 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN1_TCI_BE_MASK,
1590 match->mask.vlan_tci[1]);
1591 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN1_PROTO_BE,
1592 match->value.vlan_proto[1]);
1593 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_VLAN1_PROTO_BE_MASK,
1594 match->mask.vlan_proto[1]);
1595 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETH_SADDR_BE),
1596 match->value.eth_saddr, ETH_ALEN);
1597 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETH_SADDR_BE_MASK),
1598 match->mask.eth_saddr, ETH_ALEN);
1599 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETH_DADDR_BE),
1600 match->value.eth_daddr, ETH_ALEN);
1601 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_ETH_DADDR_BE_MASK),
1602 match->mask.eth_daddr, ETH_ALEN);
1603 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_PROTO,
1604 match->value.ip_proto);
1605 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_PROTO_MASK,
1606 match->mask.ip_proto);
1607 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TOS,
1608 match->value.ip_tos);
1609 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TOS_MASK,
1610 match->mask.ip_tos);
1611 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TTL,
1612 match->value.ip_ttl);
1613 MCDI_STRUCT_SET_BYTE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_IP_TTL_MASK,
1614 match->mask.ip_ttl);
1615 MCDI_STRUCT_POPULATE_BYTE_1(match_crit,
1616 MAE_ENC_FIELD_PAIRS_ENC_VLAN_FLAGS,
1617 MAE_ENC_FIELD_PAIRS_ENC_IP_FRAG,
1618 match->value.ip_frag);
1619 MCDI_STRUCT_POPULATE_BYTE_1(match_crit,
1620 MAE_ENC_FIELD_PAIRS_ENC_VLAN_FLAGS_MASK,
1621 MAE_ENC_FIELD_PAIRS_ENC_IP_FRAG_MASK,
1622 match->mask.ip_frag);
1623 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP4_BE,
1624 match->value.src_ip);
1625 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP4_BE_MASK,
1626 match->mask.src_ip);
1627 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP4_BE,
1628 match->value.dst_ip);
1629 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP4_BE_MASK,
1630 match->mask.dst_ip);
1631#ifdef CONFIG_IPV6
1632 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP6_BE),
1633 &match->value.src_ip6, sizeof(struct in6_addr));
1634 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_SRC_IP6_BE_MASK),
1635 &match->mask.src_ip6, sizeof(struct in6_addr));
1636 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP6_BE),
1637 &match->value.dst_ip6, sizeof(struct in6_addr));
1638 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_ENC_FIELD_PAIRS_ENC_DST_IP6_BE_MASK),
1639 &match->mask.dst_ip6, sizeof(struct in6_addr));
1640#endif
1641 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_SPORT_BE,
1642 match->value.l4_sport);
1643 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_SPORT_BE_MASK,
1644 match->mask.l4_sport);
1645 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE,
1646 match->value.l4_dport);
1647 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_ENC_FIELD_PAIRS_ENC_L4_DPORT_BE_MASK,
1648 match->mask.l4_dport);
1649 /* No enc-keys in LHS rules. Caps check should have caught this; any
1650 * enc-keys from an fLHS should have been translated to regular keys
1651 * and any EM should be a pseudo (we're an OR so can't have a direct
1652 * EM with another OR).
1653 */
1654 if (WARN_ON_ONCE(match->encap && !match->encap->type))
1655 return -EOPNOTSUPP;
1656 if (WARN_ON_ONCE(match->mask.enc_src_ip))
1657 return -EOPNOTSUPP;
1658 if (WARN_ON_ONCE(match->mask.enc_dst_ip))
1659 return -EOPNOTSUPP;
1660#ifdef CONFIG_IPV6
1661 if (WARN_ON_ONCE(!ipv6_addr_any(&match->mask.enc_src_ip6)))
1662 return -EOPNOTSUPP;
1663 if (WARN_ON_ONCE(!ipv6_addr_any(&match->mask.enc_dst_ip6)))
1664 return -EOPNOTSUPP;
1665#endif
1666 if (WARN_ON_ONCE(match->mask.enc_ip_tos))
1667 return -EOPNOTSUPP;
1668 if (WARN_ON_ONCE(match->mask.enc_ip_ttl))
1669 return -EOPNOTSUPP;
1670 if (WARN_ON_ONCE(match->mask.enc_sport))
1671 return -EOPNOTSUPP;
1672 if (WARN_ON_ONCE(match->mask.enc_dport))
1673 return -EOPNOTSUPP;
1674 if (WARN_ON_ONCE(match->mask.enc_keyid))
1675 return -EOPNOTSUPP;
1676 return 0;
1677}
1678
1679static int efx_mae_insert_lhs_outer_rule(struct efx_nic *efx,
1680 struct efx_tc_lhs_rule *rule, u32 prio)
1681{
1682 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_OUTER_RULE_INSERT_IN_LEN(MAE_ENC_FIELD_PAIRS_LEN));
1683 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_OUTER_RULE_INSERT_OUT_LEN);
1684 MCDI_DECLARE_STRUCT_PTR(match_crit);
1685 const struct efx_tc_lhs_action *act;
1686 size_t outlen;
1687 int rc;
1688
1689 MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_PRIO, prio);
1690 /* match */
1691 match_crit = _MCDI_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_FIELD_MATCH_CRITERIA);
1692 rc = efx_mae_populate_lhs_match_criteria(match_crit, &rule->match);
1693 if (rc)
1694 return rc;
1695
1696 /* action */
1697 act = &rule->lhs_act;
1698 rc = efx_mae_encap_type_to_mae_type(act->tun_type);
1699 if (rc < 0)
1700 return rc;
1701 MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_ENCAP_TYPE, rc);
1702 /* We always inhibit CT lookup on TCP_INTERESTING_FLAGS, since the
1703 * SW path needs to process the packet to update the conntrack tables
1704 * on connection establishment (SYN) or termination (FIN, RST).
1705 */
1706 MCDI_POPULATE_DWORD_6(inbuf, MAE_OUTER_RULE_INSERT_IN_LOOKUP_CONTROL,
1707 MAE_OUTER_RULE_INSERT_IN_DO_CT, !!act->zone,
1708 MAE_OUTER_RULE_INSERT_IN_CT_TCP_FLAGS_INHIBIT, 1,
1709 MAE_OUTER_RULE_INSERT_IN_CT_DOMAIN,
1710 act->zone ? act->zone->zone : 0,
1711 MAE_OUTER_RULE_INSERT_IN_CT_VNI_MODE,
1712 MAE_CT_VNI_MODE_ZERO,
1713 MAE_OUTER_RULE_INSERT_IN_DO_COUNT, !!act->count,
1714 MAE_OUTER_RULE_INSERT_IN_RECIRC_ID,
1715 act->rid ? act->rid->fw_id : 0);
1716 if (act->count)
1717 MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_INSERT_IN_COUNTER_ID,
1718 act->count->cnt->fw_id);
1719 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_OUTER_RULE_INSERT, inbuf,
1720 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
1721 if (rc)
1722 return rc;
1723 if (outlen < sizeof(outbuf))
1724 return -EIO;
1725 rule->fw_id = MCDI_DWORD(outbuf, MAE_OUTER_RULE_INSERT_OUT_OR_ID);
1726 return 0;
1727}
1728
1729static int efx_mae_populate_match_criteria(MCDI_DECLARE_STRUCT_PTR(match_crit),
1730 const struct efx_tc_match *match);
1731
1732static int efx_mae_insert_lhs_action_rule(struct efx_nic *efx,
1733 struct efx_tc_lhs_rule *rule,
1734 u32 prio)
1735{
1736 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_RULE_INSERT_IN_LEN(MAE_FIELD_MASK_VALUE_PAIRS_V2_LEN));
1737 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_RULE_INSERT_OUT_LEN);
1738 struct efx_tc_lhs_action *act = &rule->lhs_act;
1739 MCDI_DECLARE_STRUCT_PTR(match_crit);
1740 MCDI_DECLARE_STRUCT_PTR(response);
1741 size_t outlen;
1742 int rc;
1743
1744 match_crit = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_MATCH_CRITERIA);
1745 response = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_RESPONSE);
1746 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID,
1747 MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_ACTION_SET_LIST_ID_NULL);
1748 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID,
1749 MC_CMD_MAE_ACTION_SET_ALLOC_OUT_ACTION_SET_ID_NULL);
1750 EFX_POPULATE_DWORD_5(*_MCDI_STRUCT_DWORD(response, MAE_ACTION_RULE_RESPONSE_LOOKUP_CONTROL),
1751 MAE_ACTION_RULE_RESPONSE_DO_CT, !!act->zone,
1752 MAE_ACTION_RULE_RESPONSE_DO_RECIRC,
1753 act->rid && !act->zone,
1754 MAE_ACTION_RULE_RESPONSE_CT_VNI_MODE,
1755 MAE_CT_VNI_MODE_ZERO,
1756 MAE_ACTION_RULE_RESPONSE_RECIRC_ID,
1757 act->rid ? act->rid->fw_id : 0,
1758 MAE_ACTION_RULE_RESPONSE_CT_DOMAIN,
1759 act->zone ? act->zone->zone : 0);
1760 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_COUNTER_ID,
1761 act->count ? act->count->cnt->fw_id :
1762 MC_CMD_MAE_COUNTER_ALLOC_OUT_COUNTER_ID_NULL);
1763 MCDI_SET_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_PRIO, prio);
1764 rc = efx_mae_populate_match_criteria(match_crit, &rule->match);
1765 if (rc)
1766 return rc;
1767
1768 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_RULE_INSERT, inbuf, sizeof(inbuf),
1769 outbuf, sizeof(outbuf), &outlen);
1770 if (rc)
1771 return rc;
1772 if (outlen < sizeof(outbuf))
1773 return -EIO;
1774 rule->fw_id = MCDI_DWORD(outbuf, MAE_ACTION_RULE_INSERT_OUT_AR_ID);
1775 return 0;
1776}
1777
1778int efx_mae_insert_lhs_rule(struct efx_nic *efx, struct efx_tc_lhs_rule *rule,
1779 u32 prio)
1780{
1781 if (rule->is_ar)
1782 return efx_mae_insert_lhs_action_rule(efx, rule, prio);
1783 return efx_mae_insert_lhs_outer_rule(efx, rule, prio);
1784}
1785
1786static int efx_mae_remove_lhs_outer_rule(struct efx_nic *efx,
1787 struct efx_tc_lhs_rule *rule)
1788{
1789 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_OUTER_RULE_REMOVE_OUT_LEN(1));
1790 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_OUTER_RULE_REMOVE_IN_LEN(1));
1791 size_t outlen;
1792 int rc;
1793
1794 MCDI_SET_DWORD(inbuf, MAE_OUTER_RULE_REMOVE_IN_OR_ID, rule->fw_id);
1795 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_OUTER_RULE_REMOVE, inbuf,
1796 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
1797 if (rc)
1798 return rc;
1799 if (outlen < sizeof(outbuf))
1800 return -EIO;
1801 /* FW freed a different ID than we asked for, should also never happen.
1802 * Warn because it means we've now got a different idea to the FW of
1803 * what encap_mds exist, which could cause mayhem later.
1804 */
1805 if (WARN_ON(MCDI_DWORD(outbuf, MAE_OUTER_RULE_REMOVE_OUT_REMOVED_OR_ID) != rule->fw_id))
1806 return -EIO;
1807 /* We're probably about to free @rule, but let's just make sure its
1808 * fw_id is blatted so that it won't look valid if it leaks out.
1809 */
1810 rule->fw_id = MC_CMD_MAE_OUTER_RULE_INSERT_OUT_OUTER_RULE_ID_NULL;
1811 return 0;
1812}
1813
1814int efx_mae_remove_lhs_rule(struct efx_nic *efx, struct efx_tc_lhs_rule *rule)
1815{
1816 if (rule->is_ar)
1817 return efx_mae_delete_rule(efx, rule->fw_id);
1818 return efx_mae_remove_lhs_outer_rule(efx, rule);
1819}
1820
1821/* Populating is done by taking each byte of @value in turn and storing
1822 * it in the appropriate bits of @row. @value must be big-endian; we
1823 * convert it to little-endianness as we go.
1824 */
1825static int efx_mae_table_populate(struct efx_tc_table_field_fmt field,
1826 __le32 *row, size_t row_bits,
1827 void *value, size_t value_size)
1828{
1829 unsigned int i;
1830
1831 /* For now only scheme 0 is supported for any field, so we check here
1832 * (rather than, say, in calling code, which knows the semantics and
1833 * could in principle encode for other schemes).
1834 */
1835 if (field.scheme)
1836 return -EOPNOTSUPP;
1837 if (DIV_ROUND_UP(field.width, 8) != value_size)
1838 return -EINVAL;
1839 if (field.lbn + field.width > row_bits)
1840 return -EINVAL;
1841 for (i = 0; i < value_size; i++) {
1842 unsigned int bn = field.lbn + i * 8;
1843 unsigned int wn = bn / 32;
1844 u64 v;
1845
1846 v = ((u8 *)value)[value_size - i - 1];
1847 v <<= (bn % 32);
1848 row[wn] |= cpu_to_le32(v & 0xffffffff);
1849 if (wn * 32 < row_bits)
1850 row[wn + 1] |= cpu_to_le32(v >> 32);
1851 }
1852 return 0;
1853}
1854
1855static int efx_mae_table_populate_bool(struct efx_tc_table_field_fmt field,
1856 __le32 *row, size_t row_bits, bool value)
1857{
1858 u8 v = value ? 1 : 0;
1859
1860 if (field.width != 1)
1861 return -EINVAL;
1862 return efx_mae_table_populate(field, row, row_bits, &v, 1);
1863}
1864
1865static int efx_mae_table_populate_ipv4(struct efx_tc_table_field_fmt field,
1866 __le32 *row, size_t row_bits, __be32 value)
1867{
1868 /* IPv4 is placed in the first 4 bytes of an IPv6-sized field */
1869 struct in6_addr v = {};
1870
1871 if (field.width != 128)
1872 return -EINVAL;
1873 v.s6_addr32[0] = value;
1874 return efx_mae_table_populate(field, row, row_bits, &v, sizeof(v));
1875}
1876
1877static int efx_mae_table_populate_u24(struct efx_tc_table_field_fmt field,
1878 __le32 *row, size_t row_bits, u32 value)
1879{
1880 __be32 v = cpu_to_be32(value);
1881
1882 /* We adjust value_size here since just 3 bytes will be copied, and
1883 * the pointer to the value is set discarding the first byte which is
1884 * the most significant byte for a big-endian 4-bytes value.
1885 */
1886 return efx_mae_table_populate(field, row, row_bits, ((void *)&v) + 1,
1887 sizeof(v) - 1);
1888}
1889
1890#define _TABLE_POPULATE(dst, dw, _field, _value) ({ \
1891 typeof(_value) _v = _value; \
1892 \
1893 (_field.width == sizeof(_value) * 8) ? \
1894 efx_mae_table_populate(_field, dst, dw, &_v, \
1895 sizeof(_v)) : -EINVAL; \
1896})
1897#define TABLE_POPULATE_KEY_IPV4(dst, _table, _field, _value) \
1898 efx_mae_table_populate_ipv4(efx->tc->meta_##_table.desc.keys \
1899 [efx->tc->meta_##_table.keys._field##_idx],\
1900 dst, efx->tc->meta_##_table.desc.key_width,\
1901 _value)
1902#define TABLE_POPULATE_KEY(dst, _table, _field, _value) \
1903 _TABLE_POPULATE(dst, efx->tc->meta_##_table.desc.key_width, \
1904 efx->tc->meta_##_table.desc.keys \
1905 [efx->tc->meta_##_table.keys._field##_idx], \
1906 _value)
1907
1908#define TABLE_POPULATE_RESP_BOOL(dst, _table, _field, _value) \
1909 efx_mae_table_populate_bool(efx->tc->meta_##_table.desc.resps \
1910 [efx->tc->meta_##_table.resps._field##_idx],\
1911 dst, efx->tc->meta_##_table.desc.resp_width,\
1912 _value)
1913#define TABLE_POPULATE_RESP(dst, _table, _field, _value) \
1914 _TABLE_POPULATE(dst, efx->tc->meta_##_table.desc.resp_width, \
1915 efx->tc->meta_##_table.desc.resps \
1916 [efx->tc->meta_##_table.resps._field##_idx], \
1917 _value)
1918
1919#define TABLE_POPULATE_RESP_U24(dst, _table, _field, _value) \
1920 efx_mae_table_populate_u24(efx->tc->meta_##_table.desc.resps \
1921 [efx->tc->meta_##_table.resps._field##_idx],\
1922 dst, efx->tc->meta_##_table.desc.resp_width,\
1923 _value)
1924
1925static int efx_mae_populate_ct_key(struct efx_nic *efx, __le32 *key, size_t kw,
1926 struct efx_tc_ct_entry *conn)
1927{
1928 bool ipv6 = conn->eth_proto == htons(ETH_P_IPV6);
1929 int rc;
1930
1931 rc = TABLE_POPULATE_KEY(key, ct, eth_proto, conn->eth_proto);
1932 if (rc)
1933 return rc;
1934 rc = TABLE_POPULATE_KEY(key, ct, ip_proto, conn->ip_proto);
1935 if (rc)
1936 return rc;
1937 if (ipv6)
1938 rc = TABLE_POPULATE_KEY(key, ct, src_ip, conn->src_ip6);
1939 else
1940 rc = TABLE_POPULATE_KEY_IPV4(key, ct, src_ip, conn->src_ip);
1941 if (rc)
1942 return rc;
1943 if (ipv6)
1944 rc = TABLE_POPULATE_KEY(key, ct, dst_ip, conn->dst_ip6);
1945 else
1946 rc = TABLE_POPULATE_KEY_IPV4(key, ct, dst_ip, conn->dst_ip);
1947 if (rc)
1948 return rc;
1949 rc = TABLE_POPULATE_KEY(key, ct, l4_sport, conn->l4_sport);
1950 if (rc)
1951 return rc;
1952 rc = TABLE_POPULATE_KEY(key, ct, l4_dport, conn->l4_dport);
1953 if (rc)
1954 return rc;
1955 return TABLE_POPULATE_KEY(key, ct, zone, cpu_to_be16(conn->zone->zone));
1956}
1957
1958int efx_mae_insert_ct(struct efx_nic *efx, struct efx_tc_ct_entry *conn)
1959{
1960 bool ipv6 = conn->eth_proto == htons(ETH_P_IPV6);
1961 __le32 *key = NULL, *resp = NULL;
1962 size_t inlen, kw, rw;
1963 efx_dword_t *inbuf;
1964 int rc = -ENOMEM;
1965
1966 /* Check table access is supported */
1967 if (!efx->tc->meta_ct.hooked)
1968 return -EOPNOTSUPP;
1969
1970 /* key/resp widths are in bits; convert to dwords for IN_LEN */
1971 kw = DIV_ROUND_UP(efx->tc->meta_ct.desc.key_width, 32);
1972 rw = DIV_ROUND_UP(efx->tc->meta_ct.desc.resp_width, 32);
1973 BUILD_BUG_ON(sizeof(__le32) != MC_CMD_TABLE_INSERT_IN_DATA_LEN);
1974 inlen = MC_CMD_TABLE_INSERT_IN_LEN(kw + rw);
1975 if (inlen > MC_CMD_TABLE_INSERT_IN_LENMAX_MCDI2)
1976 return -E2BIG;
1977 inbuf = kzalloc(inlen, GFP_KERNEL);
1978 if (!inbuf)
1979 return -ENOMEM;
1980
1981 key = kcalloc(kw, sizeof(__le32), GFP_KERNEL);
1982 if (!key)
1983 goto out_free;
1984 resp = kcalloc(rw, sizeof(__le32), GFP_KERNEL);
1985 if (!resp)
1986 goto out_free;
1987
1988 rc = efx_mae_populate_ct_key(efx, key, kw, conn);
1989 if (rc)
1990 goto out_free;
1991
1992 rc = TABLE_POPULATE_RESP_BOOL(resp, ct, dnat, conn->dnat);
1993 if (rc)
1994 goto out_free;
1995 /* No support in hw for IPv6 NAT; field is only 32 bits */
1996 if (!ipv6)
1997 rc = TABLE_POPULATE_RESP(resp, ct, nat_ip, conn->nat_ip);
1998 if (rc)
1999 goto out_free;
2000 rc = TABLE_POPULATE_RESP(resp, ct, l4_natport, conn->l4_natport);
2001 if (rc)
2002 goto out_free;
2003 rc = TABLE_POPULATE_RESP(resp, ct, mark, cpu_to_be32(conn->mark));
2004 if (rc)
2005 goto out_free;
2006 rc = TABLE_POPULATE_RESP_U24(resp, ct, counter_id, conn->cnt->fw_id);
2007 if (rc)
2008 goto out_free;
2009
2010 MCDI_SET_DWORD(inbuf, TABLE_INSERT_IN_TABLE_ID, TABLE_ID_CONNTRACK_TABLE);
2011 MCDI_SET_WORD(inbuf, TABLE_INSERT_IN_KEY_WIDTH,
2012 efx->tc->meta_ct.desc.key_width);
2013 /* MASK_WIDTH is zero as CT is a BCAM */
2014 MCDI_SET_WORD(inbuf, TABLE_INSERT_IN_RESP_WIDTH,
2015 efx->tc->meta_ct.desc.resp_width);
2016 memcpy(MCDI_PTR(inbuf, TABLE_INSERT_IN_DATA), key, kw * sizeof(__le32));
2017 memcpy(MCDI_PTR(inbuf, TABLE_INSERT_IN_DATA) + kw * sizeof(__le32),
2018 resp, rw * sizeof(__le32));
2019
2020 BUILD_BUG_ON(MC_CMD_TABLE_INSERT_OUT_LEN);
2021
2022 rc = efx_mcdi_rpc(efx, MC_CMD_TABLE_INSERT, inbuf, inlen, NULL, 0, NULL);
2023
2024out_free:
2025 kfree(resp);
2026 kfree(key);
2027 kfree(inbuf);
2028 return rc;
2029}
2030
2031int efx_mae_remove_ct(struct efx_nic *efx, struct efx_tc_ct_entry *conn)
2032{
2033 __le32 *key = NULL;
2034 efx_dword_t *inbuf;
2035 size_t inlen, kw;
2036 int rc = -ENOMEM;
2037
2038 /* Check table access is supported */
2039 if (!efx->tc->meta_ct.hooked)
2040 return -EOPNOTSUPP;
2041
2042 /* key width is in bits; convert to dwords for IN_LEN */
2043 kw = DIV_ROUND_UP(efx->tc->meta_ct.desc.key_width, 32);
2044 BUILD_BUG_ON(sizeof(__le32) != MC_CMD_TABLE_DELETE_IN_DATA_LEN);
2045 inlen = MC_CMD_TABLE_DELETE_IN_LEN(kw);
2046 if (inlen > MC_CMD_TABLE_DELETE_IN_LENMAX_MCDI2)
2047 return -E2BIG;
2048 inbuf = kzalloc(inlen, GFP_KERNEL);
2049 if (!inbuf)
2050 return -ENOMEM;
2051
2052 key = kcalloc(kw, sizeof(__le32), GFP_KERNEL);
2053 if (!key)
2054 goto out_free;
2055
2056 rc = efx_mae_populate_ct_key(efx, key, kw, conn);
2057 if (rc)
2058 goto out_free;
2059
2060 MCDI_SET_DWORD(inbuf, TABLE_DELETE_IN_TABLE_ID, TABLE_ID_CONNTRACK_TABLE);
2061 MCDI_SET_WORD(inbuf, TABLE_DELETE_IN_KEY_WIDTH,
2062 efx->tc->meta_ct.desc.key_width);
2063 /* MASK_WIDTH is zero as CT is a BCAM */
2064 /* RESP_WIDTH is zero for DELETE */
2065 memcpy(MCDI_PTR(inbuf, TABLE_DELETE_IN_DATA), key, kw * sizeof(__le32));
2066
2067 BUILD_BUG_ON(MC_CMD_TABLE_DELETE_OUT_LEN);
2068
2069 rc = efx_mcdi_rpc(efx, MC_CMD_TABLE_DELETE, inbuf, inlen, NULL, 0, NULL);
2070
2071out_free:
2072 kfree(key);
2073 kfree(inbuf);
2074 return rc;
2075}
2076
2077static int efx_mae_populate_match_criteria(MCDI_DECLARE_STRUCT_PTR(match_crit),
2078 const struct efx_tc_match *match)
2079{
2080 if (match->mask.ingress_port) {
2081 if (~match->mask.ingress_port)
2082 return -EOPNOTSUPP;
2083 MCDI_STRUCT_SET_DWORD(match_crit,
2084 MAE_FIELD_MASK_VALUE_PAIRS_V2_INGRESS_MPORT_SELECTOR,
2085 match->value.ingress_port);
2086 }
2087 MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_INGRESS_MPORT_SELECTOR_MASK,
2088 match->mask.ingress_port);
2089 EFX_POPULATE_DWORD_5(*_MCDI_STRUCT_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_FLAGS),
2090 MAE_FIELD_MASK_VALUE_PAIRS_V2_DO_CT,
2091 match->value.ct_state_trk,
2092 MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_HIT,
2093 match->value.ct_state_est,
2094 MAE_FIELD_MASK_VALUE_PAIRS_V2_IS_IP_FRAG,
2095 match->value.ip_frag,
2096 MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_FIRST_FRAG,
2097 match->value.ip_firstfrag,
2098 MAE_FIELD_MASK_VALUE_PAIRS_V2_TCP_SYN_FIN_RST,
2099 match->value.tcp_syn_fin_rst);
2100 EFX_POPULATE_DWORD_5(*_MCDI_STRUCT_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_FLAGS_MASK),
2101 MAE_FIELD_MASK_VALUE_PAIRS_V2_DO_CT,
2102 match->mask.ct_state_trk,
2103 MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_HIT,
2104 match->mask.ct_state_est,
2105 MAE_FIELD_MASK_VALUE_PAIRS_V2_IS_IP_FRAG,
2106 match->mask.ip_frag,
2107 MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_FIRST_FRAG,
2108 match->mask.ip_firstfrag,
2109 MAE_FIELD_MASK_VALUE_PAIRS_V2_TCP_SYN_FIN_RST,
2110 match->mask.tcp_syn_fin_rst);
2111 MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_RECIRC_ID,
2112 match->value.recirc_id);
2113 MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_RECIRC_ID_MASK,
2114 match->mask.recirc_id);
2115 MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_MARK,
2116 match->value.ct_mark);
2117 MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_MARK_MASK,
2118 match->mask.ct_mark);
2119 MCDI_STRUCT_SET_WORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_DOMAIN,
2120 match->value.ct_zone);
2121 MCDI_STRUCT_SET_WORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_CT_DOMAIN_MASK,
2122 match->mask.ct_zone);
2123 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETHER_TYPE_BE,
2124 match->value.eth_proto);
2125 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETHER_TYPE_BE_MASK,
2126 match->mask.eth_proto);
2127 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN0_TCI_BE,
2128 match->value.vlan_tci[0]);
2129 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN0_TCI_BE_MASK,
2130 match->mask.vlan_tci[0]);
2131 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN0_PROTO_BE,
2132 match->value.vlan_proto[0]);
2133 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN0_PROTO_BE_MASK,
2134 match->mask.vlan_proto[0]);
2135 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN1_TCI_BE,
2136 match->value.vlan_tci[1]);
2137 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN1_TCI_BE_MASK,
2138 match->mask.vlan_tci[1]);
2139 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN1_PROTO_BE,
2140 match->value.vlan_proto[1]);
2141 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_VLAN1_PROTO_BE_MASK,
2142 match->mask.vlan_proto[1]);
2143 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETH_SADDR_BE),
2144 match->value.eth_saddr, ETH_ALEN);
2145 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETH_SADDR_BE_MASK),
2146 match->mask.eth_saddr, ETH_ALEN);
2147 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETH_DADDR_BE),
2148 match->value.eth_daddr, ETH_ALEN);
2149 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ETH_DADDR_BE_MASK),
2150 match->mask.eth_daddr, ETH_ALEN);
2151 MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_PROTO,
2152 match->value.ip_proto);
2153 MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_PROTO_MASK,
2154 match->mask.ip_proto);
2155 MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_TOS,
2156 match->value.ip_tos);
2157 MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_TOS_MASK,
2158 match->mask.ip_tos);
2159 MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_TTL,
2160 match->value.ip_ttl);
2161 MCDI_STRUCT_SET_BYTE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_IP_TTL_MASK,
2162 match->mask.ip_ttl);
2163 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_SRC_IP4_BE,
2164 match->value.src_ip);
2165 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_SRC_IP4_BE_MASK,
2166 match->mask.src_ip);
2167 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_DST_IP4_BE,
2168 match->value.dst_ip);
2169 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_DST_IP4_BE_MASK,
2170 match->mask.dst_ip);
2171#ifdef CONFIG_IPV6
2172 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_SRC_IP6_BE),
2173 &match->value.src_ip6, sizeof(struct in6_addr));
2174 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_SRC_IP6_BE_MASK),
2175 &match->mask.src_ip6, sizeof(struct in6_addr));
2176 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_DST_IP6_BE),
2177 &match->value.dst_ip6, sizeof(struct in6_addr));
2178 memcpy(MCDI_STRUCT_PTR(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_DST_IP6_BE_MASK),
2179 &match->mask.dst_ip6, sizeof(struct in6_addr));
2180#endif
2181 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_L4_SPORT_BE,
2182 match->value.l4_sport);
2183 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_L4_SPORT_BE_MASK,
2184 match->mask.l4_sport);
2185 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_L4_DPORT_BE,
2186 match->value.l4_dport);
2187 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_L4_DPORT_BE_MASK,
2188 match->mask.l4_dport);
2189 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_TCP_FLAGS_BE,
2190 match->value.tcp_flags);
2191 MCDI_STRUCT_SET_WORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_TCP_FLAGS_BE_MASK,
2192 match->mask.tcp_flags);
2193 /* enc-keys are handled indirectly, through encap_match ID */
2194 if (match->encap) {
2195 MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_OUTER_RULE_ID,
2196 match->encap->fw_id);
2197 MCDI_STRUCT_SET_DWORD(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_OUTER_RULE_ID_MASK,
2198 U32_MAX);
2199 /* enc_keyid (VNI/VSID) is not part of the encap_match */
2200 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ENC_VNET_ID_BE,
2201 match->value.enc_keyid);
2202 MCDI_STRUCT_SET_DWORD_BE(match_crit, MAE_FIELD_MASK_VALUE_PAIRS_V2_ENC_VNET_ID_BE_MASK,
2203 match->mask.enc_keyid);
2204 } else if (WARN_ON_ONCE(match->mask.enc_src_ip) ||
2205 WARN_ON_ONCE(match->mask.enc_dst_ip) ||
2206 WARN_ON_ONCE(!ipv6_addr_any(&match->mask.enc_src_ip6)) ||
2207 WARN_ON_ONCE(!ipv6_addr_any(&match->mask.enc_dst_ip6)) ||
2208 WARN_ON_ONCE(match->mask.enc_ip_tos) ||
2209 WARN_ON_ONCE(match->mask.enc_ip_ttl) ||
2210 WARN_ON_ONCE(match->mask.enc_sport) ||
2211 WARN_ON_ONCE(match->mask.enc_dport) ||
2212 WARN_ON_ONCE(match->mask.enc_keyid)) {
2213 /* No enc-keys should appear in a rule without an encap_match */
2214 return -EOPNOTSUPP;
2215 }
2216 return 0;
2217}
2218
2219int efx_mae_insert_rule(struct efx_nic *efx, const struct efx_tc_match *match,
2220 u32 prio, u32 acts_id, u32 *id)
2221{
2222 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_RULE_INSERT_IN_LEN(MAE_FIELD_MASK_VALUE_PAIRS_V2_LEN));
2223 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_RULE_INSERT_OUT_LEN);
2224 MCDI_DECLARE_STRUCT_PTR(match_crit);
2225 MCDI_DECLARE_STRUCT_PTR(response);
2226 size_t outlen;
2227 int rc;
2228
2229 if (!id)
2230 return -EINVAL;
2231
2232 match_crit = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_MATCH_CRITERIA);
2233 response = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_RESPONSE);
2234 if (efx_mae_asl_id(acts_id)) {
2235 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID, acts_id);
2236 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID,
2237 MC_CMD_MAE_ACTION_SET_ALLOC_OUT_ACTION_SET_ID_NULL);
2238 } else {
2239 /* We only had one AS, so we didn't wrap it in an ASL */
2240 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID,
2241 MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_ACTION_SET_LIST_ID_NULL);
2242 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID, acts_id);
2243 }
2244 MCDI_SET_DWORD(inbuf, MAE_ACTION_RULE_INSERT_IN_PRIO, prio);
2245 rc = efx_mae_populate_match_criteria(match_crit, match);
2246 if (rc)
2247 return rc;
2248
2249 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_RULE_INSERT, inbuf, sizeof(inbuf),
2250 outbuf, sizeof(outbuf), &outlen);
2251 if (rc)
2252 return rc;
2253 if (outlen < sizeof(outbuf))
2254 return -EIO;
2255 *id = MCDI_DWORD(outbuf, MAE_ACTION_RULE_INSERT_OUT_AR_ID);
2256 return 0;
2257}
2258
2259int efx_mae_update_rule(struct efx_nic *efx, u32 acts_id, u32 id)
2260{
2261 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_RULE_UPDATE_IN_LEN);
2262 MCDI_DECLARE_STRUCT_PTR(response);
2263
2264 BUILD_BUG_ON(MC_CMD_MAE_ACTION_RULE_UPDATE_OUT_LEN);
2265 response = _MCDI_DWORD(inbuf, MAE_ACTION_RULE_UPDATE_IN_RESPONSE);
2266
2267 MCDI_SET_DWORD(inbuf, MAE_ACTION_RULE_UPDATE_IN_AR_ID, id);
2268 if (efx_mae_asl_id(acts_id)) {
2269 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID, acts_id);
2270 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID,
2271 MC_CMD_MAE_ACTION_SET_ALLOC_OUT_ACTION_SET_ID_NULL);
2272 } else {
2273 /* We only had one AS, so we didn't wrap it in an ASL */
2274 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_ASL_ID,
2275 MC_CMD_MAE_ACTION_SET_LIST_ALLOC_OUT_ACTION_SET_LIST_ID_NULL);
2276 MCDI_STRUCT_SET_DWORD(response, MAE_ACTION_RULE_RESPONSE_AS_ID, acts_id);
2277 }
2278 return efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_RULE_UPDATE, inbuf, sizeof(inbuf),
2279 NULL, 0, NULL);
2280}
2281
2282int efx_mae_delete_rule(struct efx_nic *efx, u32 id)
2283{
2284 MCDI_DECLARE_BUF(outbuf, MC_CMD_MAE_ACTION_RULE_DELETE_OUT_LEN(1));
2285 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAE_ACTION_RULE_DELETE_IN_LEN(1));
2286 size_t outlen;
2287 int rc;
2288
2289 MCDI_SET_DWORD(inbuf, MAE_ACTION_RULE_DELETE_IN_AR_ID, id);
2290 rc = efx_mcdi_rpc(efx, MC_CMD_MAE_ACTION_RULE_DELETE, inbuf, sizeof(inbuf),
2291 outbuf, sizeof(outbuf), &outlen);
2292 if (rc)
2293 return rc;
2294 if (outlen < sizeof(outbuf))
2295 return -EIO;
2296 /* FW freed a different ID than we asked for, should also never happen.
2297 * Warn because it means we've now got a different idea to the FW of
2298 * what rules exist, which could cause mayhem later.
2299 */
2300 if (WARN_ON(MCDI_DWORD(outbuf, MAE_ACTION_RULE_DELETE_OUT_DELETED_AR_ID) != id))
2301 return -EIO;
2302 return 0;
2303}
2304
2305int efx_init_mae(struct efx_nic *efx)
2306{
2307 struct ef100_nic_data *nic_data = efx->nic_data;
2308 struct efx_mae *mae;
2309 int rc;
2310
2311 if (!nic_data->have_mport)
2312 return -EINVAL;
2313
2314 mae = kmalloc(sizeof(*mae), GFP_KERNEL);
2315 if (!mae)
2316 return -ENOMEM;
2317
2318 rc = rhashtable_init(&mae->mports_ht, &efx_mae_mports_ht_params);
2319 if (rc < 0) {
2320 kfree(mae);
2321 return rc;
2322 }
2323 efx->mae = mae;
2324 mae->efx = efx;
2325 return 0;
2326}
2327
2328void efx_fini_mae(struct efx_nic *efx)
2329{
2330 struct efx_mae *mae = efx->mae;
2331
2332 kfree(mae);
2333 efx->mae = NULL;
2334}