1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2018-2020, Intel Corporation. */
3
4 /* flow director ethtool support for ice */
5
6 #include "ice.h"
7 #include "ice_lib.h"
8 #include "ice_fdir.h"
9 #include "ice_flow.h"
10
11 static struct in6_addr full_ipv6_addr_mask = {
12 .in6_u = {
13 .u6_addr8 = {
14 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
15 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
16 }
17 }
18 };
19
20 static struct in6_addr zero_ipv6_addr_mask = {
21 .in6_u = {
22 .u6_addr8 = {
23 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
24 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
25 }
26 }
27 };
28
29 /* calls to ice_flow_add_prof require the number of segments in the array
30 * for segs_cnt. In this code that is one more than the index.
31 */
32 #define TNL_SEG_CNT(_TNL_) ((_TNL_) + 1)
33
34 /**
35 * ice_fltr_to_ethtool_flow - convert filter type values to ethtool
36 * flow type values
37 * @flow: filter type to be converted
38 *
39 * Returns the corresponding ethtool flow type.
40 */
ice_fltr_to_ethtool_flow(enum ice_fltr_ptype flow)41 static int ice_fltr_to_ethtool_flow(enum ice_fltr_ptype flow)
42 {
43 switch (flow) {
44 case ICE_FLTR_PTYPE_NONF_IPV4_TCP:
45 return TCP_V4_FLOW;
46 case ICE_FLTR_PTYPE_NONF_IPV4_UDP:
47 return UDP_V4_FLOW;
48 case ICE_FLTR_PTYPE_NONF_IPV4_SCTP:
49 return SCTP_V4_FLOW;
50 case ICE_FLTR_PTYPE_NONF_IPV4_OTHER:
51 return IPV4_USER_FLOW;
52 case ICE_FLTR_PTYPE_NONF_IPV6_TCP:
53 return TCP_V6_FLOW;
54 case ICE_FLTR_PTYPE_NONF_IPV6_UDP:
55 return UDP_V6_FLOW;
56 case ICE_FLTR_PTYPE_NONF_IPV6_SCTP:
57 return SCTP_V6_FLOW;
58 case ICE_FLTR_PTYPE_NONF_IPV6_OTHER:
59 return IPV6_USER_FLOW;
60 default:
61 /* 0 is undefined ethtool flow */
62 return 0;
63 }
64 }
65
66 /**
67 * ice_ethtool_flow_to_fltr - convert ethtool flow type to filter enum
68 * @eth: Ethtool flow type to be converted
69 *
70 * Returns flow enum
71 */
ice_ethtool_flow_to_fltr(int eth)72 static enum ice_fltr_ptype ice_ethtool_flow_to_fltr(int eth)
73 {
74 switch (eth) {
75 case TCP_V4_FLOW:
76 return ICE_FLTR_PTYPE_NONF_IPV4_TCP;
77 case UDP_V4_FLOW:
78 return ICE_FLTR_PTYPE_NONF_IPV4_UDP;
79 case SCTP_V4_FLOW:
80 return ICE_FLTR_PTYPE_NONF_IPV4_SCTP;
81 case IPV4_USER_FLOW:
82 return ICE_FLTR_PTYPE_NONF_IPV4_OTHER;
83 case TCP_V6_FLOW:
84 return ICE_FLTR_PTYPE_NONF_IPV6_TCP;
85 case UDP_V6_FLOW:
86 return ICE_FLTR_PTYPE_NONF_IPV6_UDP;
87 case SCTP_V6_FLOW:
88 return ICE_FLTR_PTYPE_NONF_IPV6_SCTP;
89 case IPV6_USER_FLOW:
90 return ICE_FLTR_PTYPE_NONF_IPV6_OTHER;
91 default:
92 return ICE_FLTR_PTYPE_NONF_NONE;
93 }
94 }
95
96 /**
97 * ice_is_mask_valid - check mask field set
98 * @mask: full mask to check
99 * @field: field for which mask should be valid
100 *
101 * If the mask is fully set return true. If it is not valid for field return
102 * false.
103 */
ice_is_mask_valid(u64 mask,u64 field)104 static bool ice_is_mask_valid(u64 mask, u64 field)
105 {
106 return (mask & field) == field;
107 }
108
109 /**
110 * ice_get_ethtool_fdir_entry - fill ethtool structure with fdir filter data
111 * @hw: hardware structure that contains filter list
112 * @cmd: ethtool command data structure to receive the filter data
113 *
114 * Returns 0 on success and -EINVAL on failure
115 */
ice_get_ethtool_fdir_entry(struct ice_hw * hw,struct ethtool_rxnfc * cmd)116 int ice_get_ethtool_fdir_entry(struct ice_hw *hw, struct ethtool_rxnfc *cmd)
117 {
118 struct ethtool_rx_flow_spec *fsp;
119 struct ice_fdir_fltr *rule;
120 int ret = 0;
121 u16 idx;
122
123 fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
124
125 mutex_lock(&hw->fdir_fltr_lock);
126
127 rule = ice_fdir_find_fltr_by_idx(hw, fsp->location);
128
129 if (!rule || fsp->location != rule->fltr_id) {
130 ret = -EINVAL;
131 goto release_lock;
132 }
133
134 fsp->flow_type = ice_fltr_to_ethtool_flow(rule->flow_type);
135
136 memset(&fsp->m_u, 0, sizeof(fsp->m_u));
137 memset(&fsp->m_ext, 0, sizeof(fsp->m_ext));
138
139 switch (fsp->flow_type) {
140 case IPV4_USER_FLOW:
141 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
142 fsp->h_u.usr_ip4_spec.proto = 0;
143 fsp->h_u.usr_ip4_spec.l4_4_bytes = rule->ip.v4.l4_header;
144 fsp->h_u.usr_ip4_spec.tos = rule->ip.v4.tos;
145 fsp->h_u.usr_ip4_spec.ip4src = rule->ip.v4.src_ip;
146 fsp->h_u.usr_ip4_spec.ip4dst = rule->ip.v4.dst_ip;
147 fsp->m_u.usr_ip4_spec.ip4src = rule->mask.v4.src_ip;
148 fsp->m_u.usr_ip4_spec.ip4dst = rule->mask.v4.dst_ip;
149 fsp->m_u.usr_ip4_spec.ip_ver = 0xFF;
150 fsp->m_u.usr_ip4_spec.proto = 0;
151 fsp->m_u.usr_ip4_spec.l4_4_bytes = rule->mask.v4.l4_header;
152 fsp->m_u.usr_ip4_spec.tos = rule->mask.v4.tos;
153 break;
154 case TCP_V4_FLOW:
155 case UDP_V4_FLOW:
156 case SCTP_V4_FLOW:
157 fsp->h_u.tcp_ip4_spec.psrc = rule->ip.v4.src_port;
158 fsp->h_u.tcp_ip4_spec.pdst = rule->ip.v4.dst_port;
159 fsp->h_u.tcp_ip4_spec.ip4src = rule->ip.v4.src_ip;
160 fsp->h_u.tcp_ip4_spec.ip4dst = rule->ip.v4.dst_ip;
161 fsp->m_u.tcp_ip4_spec.psrc = rule->mask.v4.src_port;
162 fsp->m_u.tcp_ip4_spec.pdst = rule->mask.v4.dst_port;
163 fsp->m_u.tcp_ip4_spec.ip4src = rule->mask.v4.src_ip;
164 fsp->m_u.tcp_ip4_spec.ip4dst = rule->mask.v4.dst_ip;
165 break;
166 case IPV6_USER_FLOW:
167 fsp->h_u.usr_ip6_spec.l4_4_bytes = rule->ip.v6.l4_header;
168 fsp->h_u.usr_ip6_spec.tclass = rule->ip.v6.tc;
169 fsp->h_u.usr_ip6_spec.l4_proto = rule->ip.v6.proto;
170 memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->ip.v6.src_ip,
171 sizeof(struct in6_addr));
172 memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->ip.v6.dst_ip,
173 sizeof(struct in6_addr));
174 memcpy(fsp->m_u.tcp_ip6_spec.ip6src, rule->mask.v6.src_ip,
175 sizeof(struct in6_addr));
176 memcpy(fsp->m_u.tcp_ip6_spec.ip6dst, rule->mask.v6.dst_ip,
177 sizeof(struct in6_addr));
178 fsp->m_u.usr_ip6_spec.l4_4_bytes = rule->mask.v6.l4_header;
179 fsp->m_u.usr_ip6_spec.tclass = rule->mask.v6.tc;
180 fsp->m_u.usr_ip6_spec.l4_proto = rule->mask.v6.proto;
181 break;
182 case TCP_V6_FLOW:
183 case UDP_V6_FLOW:
184 case SCTP_V6_FLOW:
185 memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->ip.v6.src_ip,
186 sizeof(struct in6_addr));
187 memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->ip.v6.dst_ip,
188 sizeof(struct in6_addr));
189 fsp->h_u.tcp_ip6_spec.psrc = rule->ip.v6.src_port;
190 fsp->h_u.tcp_ip6_spec.pdst = rule->ip.v6.dst_port;
191 memcpy(fsp->m_u.tcp_ip6_spec.ip6src,
192 rule->mask.v6.src_ip,
193 sizeof(struct in6_addr));
194 memcpy(fsp->m_u.tcp_ip6_spec.ip6dst,
195 rule->mask.v6.dst_ip,
196 sizeof(struct in6_addr));
197 fsp->m_u.tcp_ip6_spec.psrc = rule->mask.v6.src_port;
198 fsp->m_u.tcp_ip6_spec.pdst = rule->mask.v6.dst_port;
199 fsp->h_u.tcp_ip6_spec.tclass = rule->ip.v6.tc;
200 fsp->m_u.tcp_ip6_spec.tclass = rule->mask.v6.tc;
201 break;
202 default:
203 break;
204 }
205
206 if (rule->dest_ctl == ICE_FLTR_PRGM_DESC_DEST_DROP_PKT)
207 fsp->ring_cookie = RX_CLS_FLOW_DISC;
208 else
209 fsp->ring_cookie = rule->orig_q_index;
210
211 idx = ice_ethtool_flow_to_fltr(fsp->flow_type);
212 if (idx == ICE_FLTR_PTYPE_NONF_NONE) {
213 dev_err(ice_hw_to_dev(hw), "Missing input index for flow_type %d\n",
214 rule->flow_type);
215 ret = -EINVAL;
216 }
217
218 release_lock:
219 mutex_unlock(&hw->fdir_fltr_lock);
220 return ret;
221 }
222
223 /**
224 * ice_get_fdir_fltr_ids - fill buffer with filter IDs of active filters
225 * @hw: hardware structure containing the filter list
226 * @cmd: ethtool command data structure
227 * @rule_locs: ethtool array passed in from OS to receive filter IDs
228 *
229 * Returns 0 as expected for success by ethtool
230 */
231 int
ice_get_fdir_fltr_ids(struct ice_hw * hw,struct ethtool_rxnfc * cmd,u32 * rule_locs)232 ice_get_fdir_fltr_ids(struct ice_hw *hw, struct ethtool_rxnfc *cmd,
233 u32 *rule_locs)
234 {
235 struct ice_fdir_fltr *f_rule;
236 unsigned int cnt = 0;
237 int val = 0;
238
239 /* report total rule count */
240 cmd->data = ice_get_fdir_cnt_all(hw);
241
242 mutex_lock(&hw->fdir_fltr_lock);
243
244 list_for_each_entry(f_rule, &hw->fdir_list_head, fltr_node) {
245 if (cnt == cmd->rule_cnt) {
246 val = -EMSGSIZE;
247 goto release_lock;
248 }
249 rule_locs[cnt] = f_rule->fltr_id;
250 cnt++;
251 }
252
253 release_lock:
254 mutex_unlock(&hw->fdir_fltr_lock);
255 if (!val)
256 cmd->rule_cnt = cnt;
257 return val;
258 }
259
260 /**
261 * ice_fdir_remap_entries - update the FDir entries in profile
262 * @prof: FDir structure pointer
263 * @tun: tunneled or non-tunneled packet
264 * @idx: FDir entry index
265 */
266 static void
ice_fdir_remap_entries(struct ice_fd_hw_prof * prof,int tun,int idx)267 ice_fdir_remap_entries(struct ice_fd_hw_prof *prof, int tun, int idx)
268 {
269 if (idx != prof->cnt && tun < ICE_FD_HW_SEG_MAX) {
270 int i;
271
272 for (i = idx; i < (prof->cnt - 1); i++) {
273 u64 old_entry_h;
274
275 old_entry_h = prof->entry_h[i + 1][tun];
276 prof->entry_h[i][tun] = old_entry_h;
277 prof->vsi_h[i] = prof->vsi_h[i + 1];
278 }
279
280 prof->entry_h[i][tun] = 0;
281 prof->vsi_h[i] = 0;
282 }
283 }
284
285 /**
286 * ice_fdir_rem_adq_chnl - remove an ADQ channel from HW filter rules
287 * @hw: hardware structure containing filter list
288 * @vsi_idx: VSI handle
289 */
ice_fdir_rem_adq_chnl(struct ice_hw * hw,u16 vsi_idx)290 void ice_fdir_rem_adq_chnl(struct ice_hw *hw, u16 vsi_idx)
291 {
292 int status, flow;
293
294 if (!hw->fdir_prof)
295 return;
296
297 for (flow = 0; flow < ICE_FLTR_PTYPE_MAX; flow++) {
298 struct ice_fd_hw_prof *prof = hw->fdir_prof[flow];
299 int tun, i;
300
301 if (!prof || !prof->cnt)
302 continue;
303
304 for (tun = 0; tun < ICE_FD_HW_SEG_MAX; tun++) {
305 u64 prof_id;
306
307 prof_id = flow + tun * ICE_FLTR_PTYPE_MAX;
308
309 for (i = 0; i < prof->cnt; i++) {
310 if (prof->vsi_h[i] != vsi_idx)
311 continue;
312
313 prof->entry_h[i][tun] = 0;
314 prof->vsi_h[i] = 0;
315 break;
316 }
317
318 /* after clearing FDir entries update the remaining */
319 ice_fdir_remap_entries(prof, tun, i);
320
321 /* find flow profile corresponding to prof_id and clear
322 * vsi_idx from bitmap.
323 */
324 status = ice_flow_rem_vsi_prof(hw, vsi_idx, prof_id);
325 if (status) {
326 dev_err(ice_hw_to_dev(hw), "ice_flow_rem_vsi_prof() failed status=%d\n",
327 status);
328 }
329 }
330 prof->cnt--;
331 }
332 }
333
334 /**
335 * ice_fdir_get_hw_prof - return the ice_fd_hw_proc associated with a flow
336 * @hw: hardware structure containing the filter list
337 * @blk: hardware block
338 * @flow: FDir flow type to release
339 */
340 static struct ice_fd_hw_prof *
ice_fdir_get_hw_prof(struct ice_hw * hw,enum ice_block blk,int flow)341 ice_fdir_get_hw_prof(struct ice_hw *hw, enum ice_block blk, int flow)
342 {
343 if (blk == ICE_BLK_FD && hw->fdir_prof)
344 return hw->fdir_prof[flow];
345
346 return NULL;
347 }
348
349 /**
350 * ice_fdir_erase_flow_from_hw - remove a flow from the HW profile tables
351 * @hw: hardware structure containing the filter list
352 * @blk: hardware block
353 * @flow: FDir flow type to release
354 */
355 static void
ice_fdir_erase_flow_from_hw(struct ice_hw * hw,enum ice_block blk,int flow)356 ice_fdir_erase_flow_from_hw(struct ice_hw *hw, enum ice_block blk, int flow)
357 {
358 struct ice_fd_hw_prof *prof = ice_fdir_get_hw_prof(hw, blk, flow);
359 int tun;
360
361 if (!prof)
362 return;
363
364 for (tun = 0; tun < ICE_FD_HW_SEG_MAX; tun++) {
365 u64 prof_id;
366 int j;
367
368 prof_id = flow + tun * ICE_FLTR_PTYPE_MAX;
369 for (j = 0; j < prof->cnt; j++) {
370 u16 vsi_num;
371
372 if (!prof->entry_h[j][tun] || !prof->vsi_h[j])
373 continue;
374 vsi_num = ice_get_hw_vsi_num(hw, prof->vsi_h[j]);
375 ice_rem_prof_id_flow(hw, blk, vsi_num, prof_id);
376 ice_flow_rem_entry(hw, blk, prof->entry_h[j][tun]);
377 prof->entry_h[j][tun] = 0;
378 }
379 ice_flow_rem_prof(hw, blk, prof_id);
380 }
381 }
382
383 /**
384 * ice_fdir_rem_flow - release the ice_flow structures for a filter type
385 * @hw: hardware structure containing the filter list
386 * @blk: hardware block
387 * @flow_type: FDir flow type to release
388 */
389 static void
ice_fdir_rem_flow(struct ice_hw * hw,enum ice_block blk,enum ice_fltr_ptype flow_type)390 ice_fdir_rem_flow(struct ice_hw *hw, enum ice_block blk,
391 enum ice_fltr_ptype flow_type)
392 {
393 int flow = (int)flow_type & ~FLOW_EXT;
394 struct ice_fd_hw_prof *prof;
395 int tun, i;
396
397 prof = ice_fdir_get_hw_prof(hw, blk, flow);
398 if (!prof)
399 return;
400
401 ice_fdir_erase_flow_from_hw(hw, blk, flow);
402 for (i = 0; i < prof->cnt; i++)
403 prof->vsi_h[i] = 0;
404 for (tun = 0; tun < ICE_FD_HW_SEG_MAX; tun++) {
405 if (!prof->fdir_seg[tun])
406 continue;
407 devm_kfree(ice_hw_to_dev(hw), prof->fdir_seg[tun]);
408 prof->fdir_seg[tun] = NULL;
409 }
410 prof->cnt = 0;
411 }
412
413 /**
414 * ice_fdir_release_flows - release all flows in use for later replay
415 * @hw: pointer to HW instance
416 */
ice_fdir_release_flows(struct ice_hw * hw)417 void ice_fdir_release_flows(struct ice_hw *hw)
418 {
419 int flow;
420
421 /* release Flow Director HW table entries */
422 for (flow = 0; flow < ICE_FLTR_PTYPE_MAX; flow++)
423 ice_fdir_erase_flow_from_hw(hw, ICE_BLK_FD, flow);
424 }
425
426 /**
427 * ice_fdir_replay_flows - replay HW Flow Director filter info
428 * @hw: pointer to HW instance
429 */
ice_fdir_replay_flows(struct ice_hw * hw)430 void ice_fdir_replay_flows(struct ice_hw *hw)
431 {
432 int flow;
433
434 for (flow = 0; flow < ICE_FLTR_PTYPE_MAX; flow++) {
435 int tun;
436
437 if (!hw->fdir_prof[flow] || !hw->fdir_prof[flow]->cnt)
438 continue;
439 for (tun = 0; tun < ICE_FD_HW_SEG_MAX; tun++) {
440 struct ice_flow_prof *hw_prof;
441 struct ice_fd_hw_prof *prof;
442 u64 prof_id;
443 int j;
444
445 prof = hw->fdir_prof[flow];
446 prof_id = flow + tun * ICE_FLTR_PTYPE_MAX;
447 ice_flow_add_prof(hw, ICE_BLK_FD, ICE_FLOW_RX, prof_id,
448 prof->fdir_seg[tun], TNL_SEG_CNT(tun),
449 &hw_prof);
450 for (j = 0; j < prof->cnt; j++) {
451 enum ice_flow_priority prio;
452 u64 entry_h = 0;
453 int err;
454
455 prio = ICE_FLOW_PRIO_NORMAL;
456 err = ice_flow_add_entry(hw, ICE_BLK_FD,
457 prof_id,
458 prof->vsi_h[0],
459 prof->vsi_h[j],
460 prio, prof->fdir_seg,
461 &entry_h);
462 if (err) {
463 dev_err(ice_hw_to_dev(hw), "Could not replay Flow Director, flow type %d\n",
464 flow);
465 continue;
466 }
467 prof->entry_h[j][tun] = entry_h;
468 }
469 }
470 }
471 }
472
473 /**
474 * ice_parse_rx_flow_user_data - deconstruct user-defined data
475 * @fsp: pointer to ethtool Rx flow specification
476 * @data: pointer to userdef data structure for storage
477 *
478 * Returns 0 on success, negative error value on failure
479 */
480 static int
ice_parse_rx_flow_user_data(struct ethtool_rx_flow_spec * fsp,struct ice_rx_flow_userdef * data)481 ice_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
482 struct ice_rx_flow_userdef *data)
483 {
484 u64 value, mask;
485
486 memset(data, 0, sizeof(*data));
487 if (!(fsp->flow_type & FLOW_EXT))
488 return 0;
489
490 value = be64_to_cpu(*((__force __be64 *)fsp->h_ext.data));
491 mask = be64_to_cpu(*((__force __be64 *)fsp->m_ext.data));
492 if (!mask)
493 return 0;
494
495 #define ICE_USERDEF_FLEX_WORD_M GENMASK_ULL(15, 0)
496 #define ICE_USERDEF_FLEX_OFFS_S 16
497 #define ICE_USERDEF_FLEX_OFFS_M GENMASK_ULL(31, ICE_USERDEF_FLEX_OFFS_S)
498 #define ICE_USERDEF_FLEX_FLTR_M GENMASK_ULL(31, 0)
499
500 /* 0x1fe is the maximum value for offsets stored in the internal
501 * filtering tables.
502 */
503 #define ICE_USERDEF_FLEX_MAX_OFFS_VAL 0x1fe
504
505 if (!ice_is_mask_valid(mask, ICE_USERDEF_FLEX_FLTR_M) ||
506 value > ICE_USERDEF_FLEX_FLTR_M)
507 return -EINVAL;
508
509 data->flex_word = value & ICE_USERDEF_FLEX_WORD_M;
510 data->flex_offset = (value & ICE_USERDEF_FLEX_OFFS_M) >>
511 ICE_USERDEF_FLEX_OFFS_S;
512 if (data->flex_offset > ICE_USERDEF_FLEX_MAX_OFFS_VAL)
513 return -EINVAL;
514
515 data->flex_fltr = true;
516
517 return 0;
518 }
519
520 /**
521 * ice_fdir_num_avail_fltr - return the number of unused flow director filters
522 * @hw: pointer to hardware structure
523 * @vsi: software VSI structure
524 *
525 * There are 2 filter pools: guaranteed and best effort(shared). Each VSI can
526 * use filters from either pool. The guaranteed pool is divided between VSIs.
527 * The best effort filter pool is common to all VSIs and is a device shared
528 * resource pool. The number of filters available to this VSI is the sum of
529 * the VSIs guaranteed filter pool and the global available best effort
530 * filter pool.
531 *
532 * Returns the number of available flow director filters to this VSI
533 */
ice_fdir_num_avail_fltr(struct ice_hw * hw,struct ice_vsi * vsi)534 static int ice_fdir_num_avail_fltr(struct ice_hw *hw, struct ice_vsi *vsi)
535 {
536 u16 vsi_num = ice_get_hw_vsi_num(hw, vsi->idx);
537 u16 num_guar;
538 u16 num_be;
539
540 /* total guaranteed filters assigned to this VSI */
541 num_guar = vsi->num_gfltr;
542
543 /* minus the guaranteed filters programed by this VSI */
544 num_guar -= (rd32(hw, VSIQF_FD_CNT(vsi_num)) &
545 VSIQF_FD_CNT_FD_GCNT_M) >> VSIQF_FD_CNT_FD_GCNT_S;
546
547 /* total global best effort filters */
548 num_be = hw->func_caps.fd_fltr_best_effort;
549
550 /* minus the global best effort filters programmed */
551 num_be -= (rd32(hw, GLQF_FD_CNT) & GLQF_FD_CNT_FD_BCNT_M) >>
552 GLQF_FD_CNT_FD_BCNT_S;
553
554 return num_guar + num_be;
555 }
556
557 /**
558 * ice_fdir_alloc_flow_prof - allocate FDir flow profile structure(s)
559 * @hw: HW structure containing the FDir flow profile structure(s)
560 * @flow: flow type to allocate the flow profile for
561 *
562 * Allocate the fdir_prof and fdir_prof[flow] if not already created. Return 0
563 * on success and negative on error.
564 */
565 static int
ice_fdir_alloc_flow_prof(struct ice_hw * hw,enum ice_fltr_ptype flow)566 ice_fdir_alloc_flow_prof(struct ice_hw *hw, enum ice_fltr_ptype flow)
567 {
568 if (!hw)
569 return -EINVAL;
570
571 if (!hw->fdir_prof) {
572 hw->fdir_prof = devm_kcalloc(ice_hw_to_dev(hw),
573 ICE_FLTR_PTYPE_MAX,
574 sizeof(*hw->fdir_prof),
575 GFP_KERNEL);
576 if (!hw->fdir_prof)
577 return -ENOMEM;
578 }
579
580 if (!hw->fdir_prof[flow]) {
581 hw->fdir_prof[flow] = devm_kzalloc(ice_hw_to_dev(hw),
582 sizeof(**hw->fdir_prof),
583 GFP_KERNEL);
584 if (!hw->fdir_prof[flow])
585 return -ENOMEM;
586 }
587
588 return 0;
589 }
590
591 /**
592 * ice_fdir_prof_vsi_idx - find or insert a vsi_idx in structure
593 * @prof: pointer to flow director HW profile
594 * @vsi_idx: vsi_idx to locate
595 *
596 * return the index of the vsi_idx. if vsi_idx is not found insert it
597 * into the vsi_h table.
598 */
599 static u16
ice_fdir_prof_vsi_idx(struct ice_fd_hw_prof * prof,int vsi_idx)600 ice_fdir_prof_vsi_idx(struct ice_fd_hw_prof *prof, int vsi_idx)
601 {
602 u16 idx = 0;
603
604 for (idx = 0; idx < prof->cnt; idx++)
605 if (prof->vsi_h[idx] == vsi_idx)
606 return idx;
607
608 if (idx == prof->cnt)
609 prof->vsi_h[prof->cnt++] = vsi_idx;
610 return idx;
611 }
612
613 /**
614 * ice_fdir_set_hw_fltr_rule - Configure HW tables to generate a FDir rule
615 * @pf: pointer to the PF structure
616 * @seg: protocol header description pointer
617 * @flow: filter enum
618 * @tun: FDir segment to program
619 */
620 static int
ice_fdir_set_hw_fltr_rule(struct ice_pf * pf,struct ice_flow_seg_info * seg,enum ice_fltr_ptype flow,enum ice_fd_hw_seg tun)621 ice_fdir_set_hw_fltr_rule(struct ice_pf *pf, struct ice_flow_seg_info *seg,
622 enum ice_fltr_ptype flow, enum ice_fd_hw_seg tun)
623 {
624 struct device *dev = ice_pf_to_dev(pf);
625 struct ice_vsi *main_vsi, *ctrl_vsi;
626 struct ice_flow_seg_info *old_seg;
627 struct ice_flow_prof *prof = NULL;
628 struct ice_fd_hw_prof *hw_prof;
629 struct ice_hw *hw = &pf->hw;
630 u64 entry1_h = 0;
631 u64 entry2_h = 0;
632 bool del_last;
633 u64 prof_id;
634 int err;
635 int idx;
636
637 main_vsi = ice_get_main_vsi(pf);
638 if (!main_vsi)
639 return -EINVAL;
640
641 ctrl_vsi = ice_get_ctrl_vsi(pf);
642 if (!ctrl_vsi)
643 return -EINVAL;
644
645 err = ice_fdir_alloc_flow_prof(hw, flow);
646 if (err)
647 return err;
648
649 hw_prof = hw->fdir_prof[flow];
650 old_seg = hw_prof->fdir_seg[tun];
651 if (old_seg) {
652 /* This flow_type already has a changed input set.
653 * If it matches the requested input set then we are
654 * done. Or, if it's different then it's an error.
655 */
656 if (!memcmp(old_seg, seg, sizeof(*seg)))
657 return -EEXIST;
658
659 /* if there are FDir filters using this flow,
660 * then return error.
661 */
662 if (hw->fdir_fltr_cnt[flow]) {
663 dev_err(dev, "Failed to add filter. Flow director filters on each port must have the same input set.\n");
664 return -EINVAL;
665 }
666
667 if (ice_is_arfs_using_perfect_flow(hw, flow)) {
668 dev_err(dev, "aRFS using perfect flow type %d, cannot change input set\n",
669 flow);
670 return -EINVAL;
671 }
672
673 /* remove HW filter definition */
674 ice_fdir_rem_flow(hw, ICE_BLK_FD, flow);
675 }
676
677 /* Adding a profile, but there is only one header supported.
678 * That is the final parameters are 1 header (segment), no
679 * actions (NULL) and zero actions 0.
680 */
681 prof_id = flow + tun * ICE_FLTR_PTYPE_MAX;
682 err = ice_flow_add_prof(hw, ICE_BLK_FD, ICE_FLOW_RX, prof_id, seg,
683 TNL_SEG_CNT(tun), &prof);
684 if (err)
685 return err;
686 err = ice_flow_add_entry(hw, ICE_BLK_FD, prof_id, main_vsi->idx,
687 main_vsi->idx, ICE_FLOW_PRIO_NORMAL,
688 seg, &entry1_h);
689 if (err)
690 goto err_prof;
691 err = ice_flow_add_entry(hw, ICE_BLK_FD, prof_id, main_vsi->idx,
692 ctrl_vsi->idx, ICE_FLOW_PRIO_NORMAL,
693 seg, &entry2_h);
694 if (err)
695 goto err_entry;
696
697 hw_prof->fdir_seg[tun] = seg;
698 hw_prof->entry_h[0][tun] = entry1_h;
699 hw_prof->entry_h[1][tun] = entry2_h;
700 hw_prof->vsi_h[0] = main_vsi->idx;
701 hw_prof->vsi_h[1] = ctrl_vsi->idx;
702 if (!hw_prof->cnt)
703 hw_prof->cnt = 2;
704
705 for (idx = 1; idx < ICE_CHNL_MAX_TC; idx++) {
706 u16 vsi_idx;
707 u16 vsi_h;
708
709 if (!ice_is_adq_active(pf) || !main_vsi->tc_map_vsi[idx])
710 continue;
711
712 entry1_h = 0;
713 vsi_h = main_vsi->tc_map_vsi[idx]->idx;
714 err = ice_flow_add_entry(hw, ICE_BLK_FD, prof_id,
715 main_vsi->idx, vsi_h,
716 ICE_FLOW_PRIO_NORMAL, seg,
717 &entry1_h);
718 if (err) {
719 dev_err(dev, "Could not add Channel VSI %d to flow group\n",
720 idx);
721 goto err_unroll;
722 }
723
724 vsi_idx = ice_fdir_prof_vsi_idx(hw_prof,
725 main_vsi->tc_map_vsi[idx]->idx);
726 hw_prof->entry_h[vsi_idx][tun] = entry1_h;
727 }
728
729 return 0;
730
731 err_unroll:
732 entry1_h = 0;
733 hw_prof->fdir_seg[tun] = NULL;
734
735 /* The variable del_last will be used to determine when to clean up
736 * the VSI group data. The VSI data is not needed if there are no
737 * segments.
738 */
739 del_last = true;
740 for (idx = 0; idx < ICE_FD_HW_SEG_MAX; idx++)
741 if (hw_prof->fdir_seg[idx]) {
742 del_last = false;
743 break;
744 }
745
746 for (idx = 0; idx < hw_prof->cnt; idx++) {
747 u16 vsi_num = ice_get_hw_vsi_num(hw, hw_prof->vsi_h[idx]);
748
749 if (!hw_prof->entry_h[idx][tun])
750 continue;
751 ice_rem_prof_id_flow(hw, ICE_BLK_FD, vsi_num, prof_id);
752 ice_flow_rem_entry(hw, ICE_BLK_FD, hw_prof->entry_h[idx][tun]);
753 hw_prof->entry_h[idx][tun] = 0;
754 if (del_last)
755 hw_prof->vsi_h[idx] = 0;
756 }
757 if (del_last)
758 hw_prof->cnt = 0;
759 err_entry:
760 ice_rem_prof_id_flow(hw, ICE_BLK_FD,
761 ice_get_hw_vsi_num(hw, main_vsi->idx), prof_id);
762 ice_flow_rem_entry(hw, ICE_BLK_FD, entry1_h);
763 err_prof:
764 ice_flow_rem_prof(hw, ICE_BLK_FD, prof_id);
765 dev_err(dev, "Failed to add filter. Flow director filters on each port must have the same input set.\n");
766
767 return err;
768 }
769
770 /**
771 * ice_set_init_fdir_seg
772 * @seg: flow segment for programming
773 * @l3_proto: ICE_FLOW_SEG_HDR_IPV4 or ICE_FLOW_SEG_HDR_IPV6
774 * @l4_proto: ICE_FLOW_SEG_HDR_TCP or ICE_FLOW_SEG_HDR_UDP
775 *
776 * Set the configuration for perfect filters to the provided flow segment for
777 * programming the HW filter. This is to be called only when initializing
778 * filters as this function it assumes no filters exist.
779 */
780 static int
ice_set_init_fdir_seg(struct ice_flow_seg_info * seg,enum ice_flow_seg_hdr l3_proto,enum ice_flow_seg_hdr l4_proto)781 ice_set_init_fdir_seg(struct ice_flow_seg_info *seg,
782 enum ice_flow_seg_hdr l3_proto,
783 enum ice_flow_seg_hdr l4_proto)
784 {
785 enum ice_flow_field src_addr, dst_addr, src_port, dst_port;
786
787 if (!seg)
788 return -EINVAL;
789
790 if (l3_proto == ICE_FLOW_SEG_HDR_IPV4) {
791 src_addr = ICE_FLOW_FIELD_IDX_IPV4_SA;
792 dst_addr = ICE_FLOW_FIELD_IDX_IPV4_DA;
793 } else if (l3_proto == ICE_FLOW_SEG_HDR_IPV6) {
794 src_addr = ICE_FLOW_FIELD_IDX_IPV6_SA;
795 dst_addr = ICE_FLOW_FIELD_IDX_IPV6_DA;
796 } else {
797 return -EINVAL;
798 }
799
800 if (l4_proto == ICE_FLOW_SEG_HDR_TCP) {
801 src_port = ICE_FLOW_FIELD_IDX_TCP_SRC_PORT;
802 dst_port = ICE_FLOW_FIELD_IDX_TCP_DST_PORT;
803 } else if (l4_proto == ICE_FLOW_SEG_HDR_UDP) {
804 src_port = ICE_FLOW_FIELD_IDX_UDP_SRC_PORT;
805 dst_port = ICE_FLOW_FIELD_IDX_UDP_DST_PORT;
806 } else {
807 return -EINVAL;
808 }
809
810 ICE_FLOW_SET_HDRS(seg, l3_proto | l4_proto);
811
812 /* IP source address */
813 ice_flow_set_fld(seg, src_addr, ICE_FLOW_FLD_OFF_INVAL,
814 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL, false);
815
816 /* IP destination address */
817 ice_flow_set_fld(seg, dst_addr, ICE_FLOW_FLD_OFF_INVAL,
818 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL, false);
819
820 /* Layer 4 source port */
821 ice_flow_set_fld(seg, src_port, ICE_FLOW_FLD_OFF_INVAL,
822 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL, false);
823
824 /* Layer 4 destination port */
825 ice_flow_set_fld(seg, dst_port, ICE_FLOW_FLD_OFF_INVAL,
826 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL, false);
827
828 return 0;
829 }
830
831 /**
832 * ice_create_init_fdir_rule
833 * @pf: PF structure
834 * @flow: filter enum
835 *
836 * Return error value or 0 on success.
837 */
838 static int
ice_create_init_fdir_rule(struct ice_pf * pf,enum ice_fltr_ptype flow)839 ice_create_init_fdir_rule(struct ice_pf *pf, enum ice_fltr_ptype flow)
840 {
841 struct ice_flow_seg_info *seg, *tun_seg;
842 struct device *dev = ice_pf_to_dev(pf);
843 struct ice_hw *hw = &pf->hw;
844 int ret;
845
846 /* if there is already a filter rule for kind return -EINVAL */
847 if (hw->fdir_prof && hw->fdir_prof[flow] &&
848 hw->fdir_prof[flow]->fdir_seg[0])
849 return -EINVAL;
850
851 seg = devm_kzalloc(dev, sizeof(*seg), GFP_KERNEL);
852 if (!seg)
853 return -ENOMEM;
854
855 tun_seg = devm_kcalloc(dev, ICE_FD_HW_SEG_MAX, sizeof(*tun_seg),
856 GFP_KERNEL);
857 if (!tun_seg) {
858 devm_kfree(dev, seg);
859 return -ENOMEM;
860 }
861
862 if (flow == ICE_FLTR_PTYPE_NONF_IPV4_TCP)
863 ret = ice_set_init_fdir_seg(seg, ICE_FLOW_SEG_HDR_IPV4,
864 ICE_FLOW_SEG_HDR_TCP);
865 else if (flow == ICE_FLTR_PTYPE_NONF_IPV4_UDP)
866 ret = ice_set_init_fdir_seg(seg, ICE_FLOW_SEG_HDR_IPV4,
867 ICE_FLOW_SEG_HDR_UDP);
868 else if (flow == ICE_FLTR_PTYPE_NONF_IPV6_TCP)
869 ret = ice_set_init_fdir_seg(seg, ICE_FLOW_SEG_HDR_IPV6,
870 ICE_FLOW_SEG_HDR_TCP);
871 else if (flow == ICE_FLTR_PTYPE_NONF_IPV6_UDP)
872 ret = ice_set_init_fdir_seg(seg, ICE_FLOW_SEG_HDR_IPV6,
873 ICE_FLOW_SEG_HDR_UDP);
874 else
875 ret = -EINVAL;
876 if (ret)
877 goto err_exit;
878
879 /* add filter for outer headers */
880 ret = ice_fdir_set_hw_fltr_rule(pf, seg, flow, ICE_FD_HW_SEG_NON_TUN);
881 if (ret)
882 /* could not write filter, free memory */
883 goto err_exit;
884
885 /* make tunneled filter HW entries if possible */
886 memcpy(&tun_seg[1], seg, sizeof(*seg));
887 ret = ice_fdir_set_hw_fltr_rule(pf, tun_seg, flow, ICE_FD_HW_SEG_TUN);
888 if (ret)
889 /* could not write tunnel filter, but outer header filter
890 * exists
891 */
892 devm_kfree(dev, tun_seg);
893
894 set_bit(flow, hw->fdir_perfect_fltr);
895 return ret;
896 err_exit:
897 devm_kfree(dev, tun_seg);
898 devm_kfree(dev, seg);
899
900 return -EOPNOTSUPP;
901 }
902
903 /**
904 * ice_set_fdir_ip4_seg
905 * @seg: flow segment for programming
906 * @tcp_ip4_spec: mask data from ethtool
907 * @l4_proto: Layer 4 protocol to program
908 * @perfect_fltr: only valid on success; returns true if perfect filter,
909 * false if not
910 *
911 * Set the mask data into the flow segment to be used to program HW
912 * table based on provided L4 protocol for IPv4
913 */
914 static int
ice_set_fdir_ip4_seg(struct ice_flow_seg_info * seg,struct ethtool_tcpip4_spec * tcp_ip4_spec,enum ice_flow_seg_hdr l4_proto,bool * perfect_fltr)915 ice_set_fdir_ip4_seg(struct ice_flow_seg_info *seg,
916 struct ethtool_tcpip4_spec *tcp_ip4_spec,
917 enum ice_flow_seg_hdr l4_proto, bool *perfect_fltr)
918 {
919 enum ice_flow_field src_port, dst_port;
920
921 /* make sure we don't have any empty rule */
922 if (!tcp_ip4_spec->psrc && !tcp_ip4_spec->ip4src &&
923 !tcp_ip4_spec->pdst && !tcp_ip4_spec->ip4dst)
924 return -EINVAL;
925
926 /* filtering on TOS not supported */
927 if (tcp_ip4_spec->tos)
928 return -EOPNOTSUPP;
929
930 if (l4_proto == ICE_FLOW_SEG_HDR_TCP) {
931 src_port = ICE_FLOW_FIELD_IDX_TCP_SRC_PORT;
932 dst_port = ICE_FLOW_FIELD_IDX_TCP_DST_PORT;
933 } else if (l4_proto == ICE_FLOW_SEG_HDR_UDP) {
934 src_port = ICE_FLOW_FIELD_IDX_UDP_SRC_PORT;
935 dst_port = ICE_FLOW_FIELD_IDX_UDP_DST_PORT;
936 } else if (l4_proto == ICE_FLOW_SEG_HDR_SCTP) {
937 src_port = ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT;
938 dst_port = ICE_FLOW_FIELD_IDX_SCTP_DST_PORT;
939 } else {
940 return -EOPNOTSUPP;
941 }
942
943 *perfect_fltr = true;
944 ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV4 | l4_proto);
945
946 /* IP source address */
947 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
948 ice_flow_set_fld(seg, ICE_FLOW_FIELD_IDX_IPV4_SA,
949 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
950 ICE_FLOW_FLD_OFF_INVAL, false);
951 else if (!tcp_ip4_spec->ip4src)
952 *perfect_fltr = false;
953 else
954 return -EOPNOTSUPP;
955
956 /* IP destination address */
957 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
958 ice_flow_set_fld(seg, ICE_FLOW_FIELD_IDX_IPV4_DA,
959 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
960 ICE_FLOW_FLD_OFF_INVAL, false);
961 else if (!tcp_ip4_spec->ip4dst)
962 *perfect_fltr = false;
963 else
964 return -EOPNOTSUPP;
965
966 /* Layer 4 source port */
967 if (tcp_ip4_spec->psrc == htons(0xFFFF))
968 ice_flow_set_fld(seg, src_port, ICE_FLOW_FLD_OFF_INVAL,
969 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
970 false);
971 else if (!tcp_ip4_spec->psrc)
972 *perfect_fltr = false;
973 else
974 return -EOPNOTSUPP;
975
976 /* Layer 4 destination port */
977 if (tcp_ip4_spec->pdst == htons(0xFFFF))
978 ice_flow_set_fld(seg, dst_port, ICE_FLOW_FLD_OFF_INVAL,
979 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
980 false);
981 else if (!tcp_ip4_spec->pdst)
982 *perfect_fltr = false;
983 else
984 return -EOPNOTSUPP;
985
986 return 0;
987 }
988
989 /**
990 * ice_set_fdir_ip4_usr_seg
991 * @seg: flow segment for programming
992 * @usr_ip4_spec: ethtool userdef packet offset
993 * @perfect_fltr: only valid on success; returns true if perfect filter,
994 * false if not
995 *
996 * Set the offset data into the flow segment to be used to program HW
997 * table for IPv4
998 */
999 static int
ice_set_fdir_ip4_usr_seg(struct ice_flow_seg_info * seg,struct ethtool_usrip4_spec * usr_ip4_spec,bool * perfect_fltr)1000 ice_set_fdir_ip4_usr_seg(struct ice_flow_seg_info *seg,
1001 struct ethtool_usrip4_spec *usr_ip4_spec,
1002 bool *perfect_fltr)
1003 {
1004 /* first 4 bytes of Layer 4 header */
1005 if (usr_ip4_spec->l4_4_bytes)
1006 return -EINVAL;
1007 if (usr_ip4_spec->tos)
1008 return -EINVAL;
1009 if (usr_ip4_spec->ip_ver)
1010 return -EINVAL;
1011 /* Filtering on Layer 4 protocol not supported */
1012 if (usr_ip4_spec->proto)
1013 return -EOPNOTSUPP;
1014 /* empty rules are not valid */
1015 if (!usr_ip4_spec->ip4src && !usr_ip4_spec->ip4dst)
1016 return -EINVAL;
1017
1018 *perfect_fltr = true;
1019 ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV4);
1020
1021 /* IP source address */
1022 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
1023 ice_flow_set_fld(seg, ICE_FLOW_FIELD_IDX_IPV4_SA,
1024 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1025 ICE_FLOW_FLD_OFF_INVAL, false);
1026 else if (!usr_ip4_spec->ip4src)
1027 *perfect_fltr = false;
1028 else
1029 return -EOPNOTSUPP;
1030
1031 /* IP destination address */
1032 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
1033 ice_flow_set_fld(seg, ICE_FLOW_FIELD_IDX_IPV4_DA,
1034 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1035 ICE_FLOW_FLD_OFF_INVAL, false);
1036 else if (!usr_ip4_spec->ip4dst)
1037 *perfect_fltr = false;
1038 else
1039 return -EOPNOTSUPP;
1040
1041 return 0;
1042 }
1043
1044 /**
1045 * ice_set_fdir_ip6_seg
1046 * @seg: flow segment for programming
1047 * @tcp_ip6_spec: mask data from ethtool
1048 * @l4_proto: Layer 4 protocol to program
1049 * @perfect_fltr: only valid on success; returns true if perfect filter,
1050 * false if not
1051 *
1052 * Set the mask data into the flow segment to be used to program HW
1053 * table based on provided L4 protocol for IPv6
1054 */
1055 static int
ice_set_fdir_ip6_seg(struct ice_flow_seg_info * seg,struct ethtool_tcpip6_spec * tcp_ip6_spec,enum ice_flow_seg_hdr l4_proto,bool * perfect_fltr)1056 ice_set_fdir_ip6_seg(struct ice_flow_seg_info *seg,
1057 struct ethtool_tcpip6_spec *tcp_ip6_spec,
1058 enum ice_flow_seg_hdr l4_proto, bool *perfect_fltr)
1059 {
1060 enum ice_flow_field src_port, dst_port;
1061
1062 /* make sure we don't have any empty rule */
1063 if (!memcmp(tcp_ip6_spec->ip6src, &zero_ipv6_addr_mask,
1064 sizeof(struct in6_addr)) &&
1065 !memcmp(tcp_ip6_spec->ip6dst, &zero_ipv6_addr_mask,
1066 sizeof(struct in6_addr)) &&
1067 !tcp_ip6_spec->psrc && !tcp_ip6_spec->pdst)
1068 return -EINVAL;
1069
1070 /* filtering on TC not supported */
1071 if (tcp_ip6_spec->tclass)
1072 return -EOPNOTSUPP;
1073
1074 if (l4_proto == ICE_FLOW_SEG_HDR_TCP) {
1075 src_port = ICE_FLOW_FIELD_IDX_TCP_SRC_PORT;
1076 dst_port = ICE_FLOW_FIELD_IDX_TCP_DST_PORT;
1077 } else if (l4_proto == ICE_FLOW_SEG_HDR_UDP) {
1078 src_port = ICE_FLOW_FIELD_IDX_UDP_SRC_PORT;
1079 dst_port = ICE_FLOW_FIELD_IDX_UDP_DST_PORT;
1080 } else if (l4_proto == ICE_FLOW_SEG_HDR_SCTP) {
1081 src_port = ICE_FLOW_FIELD_IDX_SCTP_SRC_PORT;
1082 dst_port = ICE_FLOW_FIELD_IDX_SCTP_DST_PORT;
1083 } else {
1084 return -EINVAL;
1085 }
1086
1087 *perfect_fltr = true;
1088 ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV6 | l4_proto);
1089
1090 if (!memcmp(tcp_ip6_spec->ip6src, &full_ipv6_addr_mask,
1091 sizeof(struct in6_addr)))
1092 ice_flow_set_fld(seg, ICE_FLOW_FIELD_IDX_IPV6_SA,
1093 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1094 ICE_FLOW_FLD_OFF_INVAL, false);
1095 else if (!memcmp(tcp_ip6_spec->ip6src, &zero_ipv6_addr_mask,
1096 sizeof(struct in6_addr)))
1097 *perfect_fltr = false;
1098 else
1099 return -EOPNOTSUPP;
1100
1101 if (!memcmp(tcp_ip6_spec->ip6dst, &full_ipv6_addr_mask,
1102 sizeof(struct in6_addr)))
1103 ice_flow_set_fld(seg, ICE_FLOW_FIELD_IDX_IPV6_DA,
1104 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1105 ICE_FLOW_FLD_OFF_INVAL, false);
1106 else if (!memcmp(tcp_ip6_spec->ip6dst, &zero_ipv6_addr_mask,
1107 sizeof(struct in6_addr)))
1108 *perfect_fltr = false;
1109 else
1110 return -EOPNOTSUPP;
1111
1112 /* Layer 4 source port */
1113 if (tcp_ip6_spec->psrc == htons(0xFFFF))
1114 ice_flow_set_fld(seg, src_port, ICE_FLOW_FLD_OFF_INVAL,
1115 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1116 false);
1117 else if (!tcp_ip6_spec->psrc)
1118 *perfect_fltr = false;
1119 else
1120 return -EOPNOTSUPP;
1121
1122 /* Layer 4 destination port */
1123 if (tcp_ip6_spec->pdst == htons(0xFFFF))
1124 ice_flow_set_fld(seg, dst_port, ICE_FLOW_FLD_OFF_INVAL,
1125 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1126 false);
1127 else if (!tcp_ip6_spec->pdst)
1128 *perfect_fltr = false;
1129 else
1130 return -EOPNOTSUPP;
1131
1132 return 0;
1133 }
1134
1135 /**
1136 * ice_set_fdir_ip6_usr_seg
1137 * @seg: flow segment for programming
1138 * @usr_ip6_spec: ethtool userdef packet offset
1139 * @perfect_fltr: only valid on success; returns true if perfect filter,
1140 * false if not
1141 *
1142 * Set the offset data into the flow segment to be used to program HW
1143 * table for IPv6
1144 */
1145 static int
ice_set_fdir_ip6_usr_seg(struct ice_flow_seg_info * seg,struct ethtool_usrip6_spec * usr_ip6_spec,bool * perfect_fltr)1146 ice_set_fdir_ip6_usr_seg(struct ice_flow_seg_info *seg,
1147 struct ethtool_usrip6_spec *usr_ip6_spec,
1148 bool *perfect_fltr)
1149 {
1150 /* filtering on Layer 4 bytes not supported */
1151 if (usr_ip6_spec->l4_4_bytes)
1152 return -EOPNOTSUPP;
1153 /* filtering on TC not supported */
1154 if (usr_ip6_spec->tclass)
1155 return -EOPNOTSUPP;
1156 /* filtering on Layer 4 protocol not supported */
1157 if (usr_ip6_spec->l4_proto)
1158 return -EOPNOTSUPP;
1159 /* empty rules are not valid */
1160 if (!memcmp(usr_ip6_spec->ip6src, &zero_ipv6_addr_mask,
1161 sizeof(struct in6_addr)) &&
1162 !memcmp(usr_ip6_spec->ip6dst, &zero_ipv6_addr_mask,
1163 sizeof(struct in6_addr)))
1164 return -EINVAL;
1165
1166 *perfect_fltr = true;
1167 ICE_FLOW_SET_HDRS(seg, ICE_FLOW_SEG_HDR_IPV6);
1168
1169 if (!memcmp(usr_ip6_spec->ip6src, &full_ipv6_addr_mask,
1170 sizeof(struct in6_addr)))
1171 ice_flow_set_fld(seg, ICE_FLOW_FIELD_IDX_IPV6_SA,
1172 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1173 ICE_FLOW_FLD_OFF_INVAL, false);
1174 else if (!memcmp(usr_ip6_spec->ip6src, &zero_ipv6_addr_mask,
1175 sizeof(struct in6_addr)))
1176 *perfect_fltr = false;
1177 else
1178 return -EOPNOTSUPP;
1179
1180 if (!memcmp(usr_ip6_spec->ip6dst, &full_ipv6_addr_mask,
1181 sizeof(struct in6_addr)))
1182 ice_flow_set_fld(seg, ICE_FLOW_FIELD_IDX_IPV6_DA,
1183 ICE_FLOW_FLD_OFF_INVAL, ICE_FLOW_FLD_OFF_INVAL,
1184 ICE_FLOW_FLD_OFF_INVAL, false);
1185 else if (!memcmp(usr_ip6_spec->ip6dst, &zero_ipv6_addr_mask,
1186 sizeof(struct in6_addr)))
1187 *perfect_fltr = false;
1188 else
1189 return -EOPNOTSUPP;
1190
1191 return 0;
1192 }
1193
1194 /**
1195 * ice_cfg_fdir_xtrct_seq - Configure extraction sequence for the given filter
1196 * @pf: PF structure
1197 * @fsp: pointer to ethtool Rx flow specification
1198 * @user: user defined data from flow specification
1199 *
1200 * Returns 0 on success.
1201 */
1202 static int
ice_cfg_fdir_xtrct_seq(struct ice_pf * pf,struct ethtool_rx_flow_spec * fsp,struct ice_rx_flow_userdef * user)1203 ice_cfg_fdir_xtrct_seq(struct ice_pf *pf, struct ethtool_rx_flow_spec *fsp,
1204 struct ice_rx_flow_userdef *user)
1205 {
1206 struct ice_flow_seg_info *seg, *tun_seg;
1207 struct device *dev = ice_pf_to_dev(pf);
1208 enum ice_fltr_ptype fltr_idx;
1209 struct ice_hw *hw = &pf->hw;
1210 bool perfect_filter;
1211 int ret;
1212
1213 seg = devm_kzalloc(dev, sizeof(*seg), GFP_KERNEL);
1214 if (!seg)
1215 return -ENOMEM;
1216
1217 tun_seg = devm_kcalloc(dev, ICE_FD_HW_SEG_MAX, sizeof(*tun_seg),
1218 GFP_KERNEL);
1219 if (!tun_seg) {
1220 devm_kfree(dev, seg);
1221 return -ENOMEM;
1222 }
1223
1224 switch (fsp->flow_type & ~FLOW_EXT) {
1225 case TCP_V4_FLOW:
1226 ret = ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec,
1227 ICE_FLOW_SEG_HDR_TCP,
1228 &perfect_filter);
1229 break;
1230 case UDP_V4_FLOW:
1231 ret = ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec,
1232 ICE_FLOW_SEG_HDR_UDP,
1233 &perfect_filter);
1234 break;
1235 case SCTP_V4_FLOW:
1236 ret = ice_set_fdir_ip4_seg(seg, &fsp->m_u.tcp_ip4_spec,
1237 ICE_FLOW_SEG_HDR_SCTP,
1238 &perfect_filter);
1239 break;
1240 case IPV4_USER_FLOW:
1241 ret = ice_set_fdir_ip4_usr_seg(seg, &fsp->m_u.usr_ip4_spec,
1242 &perfect_filter);
1243 break;
1244 case TCP_V6_FLOW:
1245 ret = ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec,
1246 ICE_FLOW_SEG_HDR_TCP,
1247 &perfect_filter);
1248 break;
1249 case UDP_V6_FLOW:
1250 ret = ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec,
1251 ICE_FLOW_SEG_HDR_UDP,
1252 &perfect_filter);
1253 break;
1254 case SCTP_V6_FLOW:
1255 ret = ice_set_fdir_ip6_seg(seg, &fsp->m_u.tcp_ip6_spec,
1256 ICE_FLOW_SEG_HDR_SCTP,
1257 &perfect_filter);
1258 break;
1259 case IPV6_USER_FLOW:
1260 ret = ice_set_fdir_ip6_usr_seg(seg, &fsp->m_u.usr_ip6_spec,
1261 &perfect_filter);
1262 break;
1263 default:
1264 ret = -EINVAL;
1265 }
1266 if (ret)
1267 goto err_exit;
1268
1269 /* tunnel segments are shifted up one. */
1270 memcpy(&tun_seg[1], seg, sizeof(*seg));
1271
1272 if (user && user->flex_fltr) {
1273 perfect_filter = false;
1274 ice_flow_add_fld_raw(seg, user->flex_offset,
1275 ICE_FLTR_PRGM_FLEX_WORD_SIZE,
1276 ICE_FLOW_FLD_OFF_INVAL,
1277 ICE_FLOW_FLD_OFF_INVAL);
1278 ice_flow_add_fld_raw(&tun_seg[1], user->flex_offset,
1279 ICE_FLTR_PRGM_FLEX_WORD_SIZE,
1280 ICE_FLOW_FLD_OFF_INVAL,
1281 ICE_FLOW_FLD_OFF_INVAL);
1282 }
1283
1284 fltr_idx = ice_ethtool_flow_to_fltr(fsp->flow_type & ~FLOW_EXT);
1285
1286 assign_bit(fltr_idx, hw->fdir_perfect_fltr, perfect_filter);
1287
1288 /* add filter for outer headers */
1289 ret = ice_fdir_set_hw_fltr_rule(pf, seg, fltr_idx,
1290 ICE_FD_HW_SEG_NON_TUN);
1291 if (ret == -EEXIST) {
1292 /* Rule already exists, free memory and count as success */
1293 ret = 0;
1294 goto err_exit;
1295 } else if (ret) {
1296 /* could not write filter, free memory */
1297 goto err_exit;
1298 }
1299
1300 /* make tunneled filter HW entries if possible */
1301 memcpy(&tun_seg[1], seg, sizeof(*seg));
1302 ret = ice_fdir_set_hw_fltr_rule(pf, tun_seg, fltr_idx,
1303 ICE_FD_HW_SEG_TUN);
1304 if (ret == -EEXIST) {
1305 /* Rule already exists, free memory and count as success */
1306 devm_kfree(dev, tun_seg);
1307 ret = 0;
1308 } else if (ret) {
1309 /* could not write tunnel filter, but outer filter exists */
1310 devm_kfree(dev, tun_seg);
1311 }
1312
1313 return ret;
1314
1315 err_exit:
1316 devm_kfree(dev, tun_seg);
1317 devm_kfree(dev, seg);
1318
1319 return ret;
1320 }
1321
1322 /**
1323 * ice_update_per_q_fltr
1324 * @vsi: ptr to VSI
1325 * @q_index: queue index
1326 * @inc: true to increment or false to decrement per queue filter count
1327 *
1328 * This function is used to keep track of per queue sideband filters
1329 */
ice_update_per_q_fltr(struct ice_vsi * vsi,u32 q_index,bool inc)1330 static void ice_update_per_q_fltr(struct ice_vsi *vsi, u32 q_index, bool inc)
1331 {
1332 struct ice_rx_ring *rx_ring;
1333
1334 if (!vsi->num_rxq || q_index >= vsi->num_rxq)
1335 return;
1336
1337 rx_ring = vsi->rx_rings[q_index];
1338 if (!rx_ring || !rx_ring->ch)
1339 return;
1340
1341 if (inc)
1342 atomic_inc(&rx_ring->ch->num_sb_fltr);
1343 else
1344 atomic_dec_if_positive(&rx_ring->ch->num_sb_fltr);
1345 }
1346
1347 /**
1348 * ice_fdir_write_fltr - send a flow director filter to the hardware
1349 * @pf: PF data structure
1350 * @input: filter structure
1351 * @add: true adds filter and false removed filter
1352 * @is_tun: true adds inner filter on tunnel and false outer headers
1353 *
1354 * returns 0 on success and negative value on error
1355 */
1356 int
ice_fdir_write_fltr(struct ice_pf * pf,struct ice_fdir_fltr * input,bool add,bool is_tun)1357 ice_fdir_write_fltr(struct ice_pf *pf, struct ice_fdir_fltr *input, bool add,
1358 bool is_tun)
1359 {
1360 struct device *dev = ice_pf_to_dev(pf);
1361 struct ice_hw *hw = &pf->hw;
1362 struct ice_fltr_desc desc;
1363 struct ice_vsi *ctrl_vsi;
1364 u8 *pkt, *frag_pkt;
1365 bool has_frag;
1366 int err;
1367
1368 ctrl_vsi = ice_get_ctrl_vsi(pf);
1369 if (!ctrl_vsi)
1370 return -EINVAL;
1371
1372 pkt = devm_kzalloc(dev, ICE_FDIR_MAX_RAW_PKT_SIZE, GFP_KERNEL);
1373 if (!pkt)
1374 return -ENOMEM;
1375 frag_pkt = devm_kzalloc(dev, ICE_FDIR_MAX_RAW_PKT_SIZE, GFP_KERNEL);
1376 if (!frag_pkt) {
1377 err = -ENOMEM;
1378 goto err_free;
1379 }
1380
1381 ice_fdir_get_prgm_desc(hw, input, &desc, add);
1382 err = ice_fdir_get_gen_prgm_pkt(hw, input, pkt, false, is_tun);
1383 if (err)
1384 goto err_free_all;
1385 err = ice_prgm_fdir_fltr(ctrl_vsi, &desc, pkt);
1386 if (err)
1387 goto err_free_all;
1388
1389 /* repeat for fragment packet */
1390 has_frag = ice_fdir_has_frag(input->flow_type);
1391 if (has_frag) {
1392 /* does not return error */
1393 ice_fdir_get_prgm_desc(hw, input, &desc, add);
1394 err = ice_fdir_get_gen_prgm_pkt(hw, input, frag_pkt, true,
1395 is_tun);
1396 if (err)
1397 goto err_frag;
1398 err = ice_prgm_fdir_fltr(ctrl_vsi, &desc, frag_pkt);
1399 if (err)
1400 goto err_frag;
1401 } else {
1402 devm_kfree(dev, frag_pkt);
1403 }
1404
1405 return 0;
1406
1407 err_free_all:
1408 devm_kfree(dev, frag_pkt);
1409 err_free:
1410 devm_kfree(dev, pkt);
1411 return err;
1412
1413 err_frag:
1414 devm_kfree(dev, frag_pkt);
1415 return err;
1416 }
1417
1418 /**
1419 * ice_fdir_write_all_fltr - send a flow director filter to the hardware
1420 * @pf: PF data structure
1421 * @input: filter structure
1422 * @add: true adds filter and false removed filter
1423 *
1424 * returns 0 on success and negative value on error
1425 */
1426 static int
ice_fdir_write_all_fltr(struct ice_pf * pf,struct ice_fdir_fltr * input,bool add)1427 ice_fdir_write_all_fltr(struct ice_pf *pf, struct ice_fdir_fltr *input,
1428 bool add)
1429 {
1430 u16 port_num;
1431 int tun;
1432
1433 for (tun = 0; tun < ICE_FD_HW_SEG_MAX; tun++) {
1434 bool is_tun = tun == ICE_FD_HW_SEG_TUN;
1435 int err;
1436
1437 if (is_tun && !ice_get_open_tunnel_port(&pf->hw, &port_num, TNL_ALL))
1438 continue;
1439 err = ice_fdir_write_fltr(pf, input, add, is_tun);
1440 if (err)
1441 return err;
1442 }
1443 return 0;
1444 }
1445
1446 /**
1447 * ice_fdir_replay_fltrs - replay filters from the HW filter list
1448 * @pf: board private structure
1449 */
ice_fdir_replay_fltrs(struct ice_pf * pf)1450 void ice_fdir_replay_fltrs(struct ice_pf *pf)
1451 {
1452 struct ice_fdir_fltr *f_rule;
1453 struct ice_hw *hw = &pf->hw;
1454
1455 list_for_each_entry(f_rule, &hw->fdir_list_head, fltr_node) {
1456 int err = ice_fdir_write_all_fltr(pf, f_rule, true);
1457
1458 if (err)
1459 dev_dbg(ice_pf_to_dev(pf), "Flow Director error %d, could not reprogram filter %d\n",
1460 err, f_rule->fltr_id);
1461 }
1462 }
1463
1464 /**
1465 * ice_fdir_create_dflt_rules - create default perfect filters
1466 * @pf: PF data structure
1467 *
1468 * Returns 0 for success or error.
1469 */
ice_fdir_create_dflt_rules(struct ice_pf * pf)1470 int ice_fdir_create_dflt_rules(struct ice_pf *pf)
1471 {
1472 int err;
1473
1474 /* Create perfect TCP and UDP rules in hardware. */
1475 err = ice_create_init_fdir_rule(pf, ICE_FLTR_PTYPE_NONF_IPV4_TCP);
1476 if (err)
1477 return err;
1478
1479 err = ice_create_init_fdir_rule(pf, ICE_FLTR_PTYPE_NONF_IPV4_UDP);
1480 if (err)
1481 return err;
1482
1483 err = ice_create_init_fdir_rule(pf, ICE_FLTR_PTYPE_NONF_IPV6_TCP);
1484 if (err)
1485 return err;
1486
1487 err = ice_create_init_fdir_rule(pf, ICE_FLTR_PTYPE_NONF_IPV6_UDP);
1488
1489 return err;
1490 }
1491
1492 /**
1493 * ice_fdir_del_all_fltrs - Delete all flow director filters
1494 * @vsi: the VSI being changed
1495 *
1496 * This function needs to be called while holding hw->fdir_fltr_lock
1497 */
ice_fdir_del_all_fltrs(struct ice_vsi * vsi)1498 void ice_fdir_del_all_fltrs(struct ice_vsi *vsi)
1499 {
1500 struct ice_fdir_fltr *f_rule, *tmp;
1501 struct ice_pf *pf = vsi->back;
1502 struct ice_hw *hw = &pf->hw;
1503
1504 list_for_each_entry_safe(f_rule, tmp, &hw->fdir_list_head, fltr_node) {
1505 ice_fdir_write_all_fltr(pf, f_rule, false);
1506 ice_fdir_update_cntrs(hw, f_rule->flow_type, false);
1507 list_del(&f_rule->fltr_node);
1508 devm_kfree(ice_pf_to_dev(pf), f_rule);
1509 }
1510 }
1511
1512 /**
1513 * ice_vsi_manage_fdir - turn on/off flow director
1514 * @vsi: the VSI being changed
1515 * @ena: boolean value indicating if this is an enable or disable request
1516 */
ice_vsi_manage_fdir(struct ice_vsi * vsi,bool ena)1517 void ice_vsi_manage_fdir(struct ice_vsi *vsi, bool ena)
1518 {
1519 struct ice_pf *pf = vsi->back;
1520 struct ice_hw *hw = &pf->hw;
1521 enum ice_fltr_ptype flow;
1522
1523 if (ena) {
1524 set_bit(ICE_FLAG_FD_ENA, pf->flags);
1525 ice_fdir_create_dflt_rules(pf);
1526 return;
1527 }
1528
1529 mutex_lock(&hw->fdir_fltr_lock);
1530 if (!test_and_clear_bit(ICE_FLAG_FD_ENA, pf->flags))
1531 goto release_lock;
1532
1533 ice_fdir_del_all_fltrs(vsi);
1534
1535 if (hw->fdir_prof)
1536 for (flow = ICE_FLTR_PTYPE_NONF_NONE; flow < ICE_FLTR_PTYPE_MAX;
1537 flow++)
1538 if (hw->fdir_prof[flow])
1539 ice_fdir_rem_flow(hw, ICE_BLK_FD, flow);
1540
1541 release_lock:
1542 mutex_unlock(&hw->fdir_fltr_lock);
1543 }
1544
1545 /**
1546 * ice_fdir_do_rem_flow - delete flow and possibly add perfect flow
1547 * @pf: PF structure
1548 * @flow_type: FDir flow type to release
1549 */
1550 static void
ice_fdir_do_rem_flow(struct ice_pf * pf,enum ice_fltr_ptype flow_type)1551 ice_fdir_do_rem_flow(struct ice_pf *pf, enum ice_fltr_ptype flow_type)
1552 {
1553 struct ice_hw *hw = &pf->hw;
1554 bool need_perfect = false;
1555
1556 if (flow_type == ICE_FLTR_PTYPE_NONF_IPV4_TCP ||
1557 flow_type == ICE_FLTR_PTYPE_NONF_IPV4_UDP ||
1558 flow_type == ICE_FLTR_PTYPE_NONF_IPV6_TCP ||
1559 flow_type == ICE_FLTR_PTYPE_NONF_IPV6_UDP)
1560 need_perfect = true;
1561
1562 if (need_perfect && test_bit(flow_type, hw->fdir_perfect_fltr))
1563 return;
1564
1565 ice_fdir_rem_flow(hw, ICE_BLK_FD, flow_type);
1566 if (need_perfect)
1567 ice_create_init_fdir_rule(pf, flow_type);
1568 }
1569
1570 /**
1571 * ice_fdir_update_list_entry - add or delete a filter from the filter list
1572 * @pf: PF structure
1573 * @input: filter structure
1574 * @fltr_idx: ethtool index of filter to modify
1575 *
1576 * returns 0 on success and negative on errors
1577 */
1578 static int
ice_fdir_update_list_entry(struct ice_pf * pf,struct ice_fdir_fltr * input,int fltr_idx)1579 ice_fdir_update_list_entry(struct ice_pf *pf, struct ice_fdir_fltr *input,
1580 int fltr_idx)
1581 {
1582 struct ice_fdir_fltr *old_fltr;
1583 struct ice_hw *hw = &pf->hw;
1584 struct ice_vsi *vsi;
1585 int err = -ENOENT;
1586
1587 /* Do not update filters during reset */
1588 if (ice_is_reset_in_progress(pf->state))
1589 return -EBUSY;
1590
1591 vsi = ice_get_main_vsi(pf);
1592 if (!vsi)
1593 return -EINVAL;
1594
1595 old_fltr = ice_fdir_find_fltr_by_idx(hw, fltr_idx);
1596 if (old_fltr) {
1597 err = ice_fdir_write_all_fltr(pf, old_fltr, false);
1598 if (err)
1599 return err;
1600 ice_fdir_update_cntrs(hw, old_fltr->flow_type, false);
1601 /* update sb-filters count, specific to ring->channel */
1602 ice_update_per_q_fltr(vsi, old_fltr->orig_q_index, false);
1603 if (!input && !hw->fdir_fltr_cnt[old_fltr->flow_type])
1604 /* we just deleted the last filter of flow_type so we
1605 * should also delete the HW filter info.
1606 */
1607 ice_fdir_do_rem_flow(pf, old_fltr->flow_type);
1608 list_del(&old_fltr->fltr_node);
1609 devm_kfree(ice_hw_to_dev(hw), old_fltr);
1610 }
1611 if (!input)
1612 return err;
1613 ice_fdir_list_add_fltr(hw, input);
1614 /* update sb-filters count, specific to ring->channel */
1615 ice_update_per_q_fltr(vsi, input->orig_q_index, true);
1616 ice_fdir_update_cntrs(hw, input->flow_type, true);
1617 return 0;
1618 }
1619
1620 /**
1621 * ice_del_fdir_ethtool - delete Flow Director filter
1622 * @vsi: pointer to target VSI
1623 * @cmd: command to add or delete Flow Director filter
1624 *
1625 * Returns 0 on success and negative values for failure
1626 */
ice_del_fdir_ethtool(struct ice_vsi * vsi,struct ethtool_rxnfc * cmd)1627 int ice_del_fdir_ethtool(struct ice_vsi *vsi, struct ethtool_rxnfc *cmd)
1628 {
1629 struct ethtool_rx_flow_spec *fsp =
1630 (struct ethtool_rx_flow_spec *)&cmd->fs;
1631 struct ice_pf *pf = vsi->back;
1632 struct ice_hw *hw = &pf->hw;
1633 int val;
1634
1635 if (!test_bit(ICE_FLAG_FD_ENA, pf->flags))
1636 return -EOPNOTSUPP;
1637
1638 /* Do not delete filters during reset */
1639 if (ice_is_reset_in_progress(pf->state)) {
1640 dev_err(ice_pf_to_dev(pf), "Device is resetting - deleting Flow Director filters not supported during reset\n");
1641 return -EBUSY;
1642 }
1643
1644 if (test_bit(ICE_FD_FLUSH_REQ, pf->state))
1645 return -EBUSY;
1646
1647 mutex_lock(&hw->fdir_fltr_lock);
1648 val = ice_fdir_update_list_entry(pf, NULL, fsp->location);
1649 mutex_unlock(&hw->fdir_fltr_lock);
1650
1651 return val;
1652 }
1653
1654 /**
1655 * ice_update_ring_dest_vsi - update dest ring and dest VSI
1656 * @vsi: pointer to target VSI
1657 * @dest_vsi: ptr to dest VSI index
1658 * @ring: ptr to dest ring
1659 *
1660 * This function updates destination VSI and queue if user specifies
1661 * target queue which falls in channel's (aka ADQ) queue region
1662 */
1663 static void
ice_update_ring_dest_vsi(struct ice_vsi * vsi,u16 * dest_vsi,u32 * ring)1664 ice_update_ring_dest_vsi(struct ice_vsi *vsi, u16 *dest_vsi, u32 *ring)
1665 {
1666 struct ice_channel *ch;
1667
1668 list_for_each_entry(ch, &vsi->ch_list, list) {
1669 if (!ch->ch_vsi)
1670 continue;
1671
1672 /* make sure to locate corresponding channel based on "queue"
1673 * specified
1674 */
1675 if ((*ring < ch->base_q) ||
1676 (*ring >= (ch->base_q + ch->num_rxq)))
1677 continue;
1678
1679 /* update the dest_vsi based on channel */
1680 *dest_vsi = ch->ch_vsi->idx;
1681
1682 /* update the "ring" to be correct based on channel */
1683 *ring -= ch->base_q;
1684 }
1685 }
1686
1687 /**
1688 * ice_set_fdir_input_set - Set the input set for Flow Director
1689 * @vsi: pointer to target VSI
1690 * @fsp: pointer to ethtool Rx flow specification
1691 * @input: filter structure
1692 */
1693 static int
ice_set_fdir_input_set(struct ice_vsi * vsi,struct ethtool_rx_flow_spec * fsp,struct ice_fdir_fltr * input)1694 ice_set_fdir_input_set(struct ice_vsi *vsi, struct ethtool_rx_flow_spec *fsp,
1695 struct ice_fdir_fltr *input)
1696 {
1697 u16 dest_vsi, q_index = 0;
1698 u16 orig_q_index = 0;
1699 struct ice_pf *pf;
1700 struct ice_hw *hw;
1701 int flow_type;
1702 u8 dest_ctl;
1703
1704 if (!vsi || !fsp || !input)
1705 return -EINVAL;
1706
1707 pf = vsi->back;
1708 hw = &pf->hw;
1709
1710 dest_vsi = vsi->idx;
1711 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
1712 dest_ctl = ICE_FLTR_PRGM_DESC_DEST_DROP_PKT;
1713 } else {
1714 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
1715 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
1716
1717 if (vf) {
1718 dev_err(ice_pf_to_dev(pf), "Failed to add filter. Flow director filters are not supported on VF queues.\n");
1719 return -EINVAL;
1720 }
1721
1722 if (ring >= vsi->num_rxq)
1723 return -EINVAL;
1724
1725 orig_q_index = ring;
1726 ice_update_ring_dest_vsi(vsi, &dest_vsi, &ring);
1727 dest_ctl = ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QINDEX;
1728 q_index = ring;
1729 }
1730
1731 input->fltr_id = fsp->location;
1732 input->q_index = q_index;
1733 flow_type = fsp->flow_type & ~FLOW_EXT;
1734
1735 /* Record the original queue index as specified by user.
1736 * with channel configuration 'q_index' becomes relative
1737 * to TC (channel).
1738 */
1739 input->orig_q_index = orig_q_index;
1740 input->dest_vsi = dest_vsi;
1741 input->dest_ctl = dest_ctl;
1742 input->fltr_status = ICE_FLTR_PRGM_DESC_FD_STATUS_FD_ID;
1743 input->cnt_index = ICE_FD_SB_STAT_IDX(hw->fd_ctr_base);
1744 input->flow_type = ice_ethtool_flow_to_fltr(flow_type);
1745
1746 if (fsp->flow_type & FLOW_EXT) {
1747 memcpy(input->ext_data.usr_def, fsp->h_ext.data,
1748 sizeof(input->ext_data.usr_def));
1749 input->ext_data.vlan_type = fsp->h_ext.vlan_etype;
1750 input->ext_data.vlan_tag = fsp->h_ext.vlan_tci;
1751 memcpy(input->ext_mask.usr_def, fsp->m_ext.data,
1752 sizeof(input->ext_mask.usr_def));
1753 input->ext_mask.vlan_type = fsp->m_ext.vlan_etype;
1754 input->ext_mask.vlan_tag = fsp->m_ext.vlan_tci;
1755 }
1756
1757 switch (flow_type) {
1758 case TCP_V4_FLOW:
1759 case UDP_V4_FLOW:
1760 case SCTP_V4_FLOW:
1761 input->ip.v4.dst_port = fsp->h_u.tcp_ip4_spec.pdst;
1762 input->ip.v4.src_port = fsp->h_u.tcp_ip4_spec.psrc;
1763 input->ip.v4.dst_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
1764 input->ip.v4.src_ip = fsp->h_u.tcp_ip4_spec.ip4src;
1765 input->mask.v4.dst_port = fsp->m_u.tcp_ip4_spec.pdst;
1766 input->mask.v4.src_port = fsp->m_u.tcp_ip4_spec.psrc;
1767 input->mask.v4.dst_ip = fsp->m_u.tcp_ip4_spec.ip4dst;
1768 input->mask.v4.src_ip = fsp->m_u.tcp_ip4_spec.ip4src;
1769 break;
1770 case IPV4_USER_FLOW:
1771 input->ip.v4.dst_ip = fsp->h_u.usr_ip4_spec.ip4dst;
1772 input->ip.v4.src_ip = fsp->h_u.usr_ip4_spec.ip4src;
1773 input->ip.v4.l4_header = fsp->h_u.usr_ip4_spec.l4_4_bytes;
1774 input->ip.v4.proto = fsp->h_u.usr_ip4_spec.proto;
1775 input->ip.v4.ip_ver = fsp->h_u.usr_ip4_spec.ip_ver;
1776 input->ip.v4.tos = fsp->h_u.usr_ip4_spec.tos;
1777 input->mask.v4.dst_ip = fsp->m_u.usr_ip4_spec.ip4dst;
1778 input->mask.v4.src_ip = fsp->m_u.usr_ip4_spec.ip4src;
1779 input->mask.v4.l4_header = fsp->m_u.usr_ip4_spec.l4_4_bytes;
1780 input->mask.v4.proto = fsp->m_u.usr_ip4_spec.proto;
1781 input->mask.v4.ip_ver = fsp->m_u.usr_ip4_spec.ip_ver;
1782 input->mask.v4.tos = fsp->m_u.usr_ip4_spec.tos;
1783 break;
1784 case TCP_V6_FLOW:
1785 case UDP_V6_FLOW:
1786 case SCTP_V6_FLOW:
1787 memcpy(input->ip.v6.dst_ip, fsp->h_u.usr_ip6_spec.ip6dst,
1788 sizeof(struct in6_addr));
1789 memcpy(input->ip.v6.src_ip, fsp->h_u.usr_ip6_spec.ip6src,
1790 sizeof(struct in6_addr));
1791 input->ip.v6.dst_port = fsp->h_u.tcp_ip6_spec.pdst;
1792 input->ip.v6.src_port = fsp->h_u.tcp_ip6_spec.psrc;
1793 input->ip.v6.tc = fsp->h_u.tcp_ip6_spec.tclass;
1794 memcpy(input->mask.v6.dst_ip, fsp->m_u.tcp_ip6_spec.ip6dst,
1795 sizeof(struct in6_addr));
1796 memcpy(input->mask.v6.src_ip, fsp->m_u.tcp_ip6_spec.ip6src,
1797 sizeof(struct in6_addr));
1798 input->mask.v6.dst_port = fsp->m_u.tcp_ip6_spec.pdst;
1799 input->mask.v6.src_port = fsp->m_u.tcp_ip6_spec.psrc;
1800 input->mask.v6.tc = fsp->m_u.tcp_ip6_spec.tclass;
1801 break;
1802 case IPV6_USER_FLOW:
1803 memcpy(input->ip.v6.dst_ip, fsp->h_u.usr_ip6_spec.ip6dst,
1804 sizeof(struct in6_addr));
1805 memcpy(input->ip.v6.src_ip, fsp->h_u.usr_ip6_spec.ip6src,
1806 sizeof(struct in6_addr));
1807 input->ip.v6.l4_header = fsp->h_u.usr_ip6_spec.l4_4_bytes;
1808 input->ip.v6.tc = fsp->h_u.usr_ip6_spec.tclass;
1809
1810 /* if no protocol requested, use IPPROTO_NONE */
1811 if (!fsp->m_u.usr_ip6_spec.l4_proto)
1812 input->ip.v6.proto = IPPROTO_NONE;
1813 else
1814 input->ip.v6.proto = fsp->h_u.usr_ip6_spec.l4_proto;
1815
1816 memcpy(input->mask.v6.dst_ip, fsp->m_u.usr_ip6_spec.ip6dst,
1817 sizeof(struct in6_addr));
1818 memcpy(input->mask.v6.src_ip, fsp->m_u.usr_ip6_spec.ip6src,
1819 sizeof(struct in6_addr));
1820 input->mask.v6.l4_header = fsp->m_u.usr_ip6_spec.l4_4_bytes;
1821 input->mask.v6.tc = fsp->m_u.usr_ip6_spec.tclass;
1822 input->mask.v6.proto = fsp->m_u.usr_ip6_spec.l4_proto;
1823 break;
1824 default:
1825 /* not doing un-parsed flow types */
1826 return -EINVAL;
1827 }
1828
1829 return 0;
1830 }
1831
1832 /**
1833 * ice_add_fdir_ethtool - Add/Remove Flow Director filter
1834 * @vsi: pointer to target VSI
1835 * @cmd: command to add or delete Flow Director filter
1836 *
1837 * Returns 0 on success and negative values for failure
1838 */
ice_add_fdir_ethtool(struct ice_vsi * vsi,struct ethtool_rxnfc * cmd)1839 int ice_add_fdir_ethtool(struct ice_vsi *vsi, struct ethtool_rxnfc *cmd)
1840 {
1841 struct ice_rx_flow_userdef userdata;
1842 struct ethtool_rx_flow_spec *fsp;
1843 struct ice_fdir_fltr *input;
1844 struct device *dev;
1845 struct ice_pf *pf;
1846 struct ice_hw *hw;
1847 int fltrs_needed;
1848 u16 tunnel_port;
1849 int ret;
1850
1851 if (!vsi)
1852 return -EINVAL;
1853
1854 pf = vsi->back;
1855 hw = &pf->hw;
1856 dev = ice_pf_to_dev(pf);
1857
1858 if (!test_bit(ICE_FLAG_FD_ENA, pf->flags))
1859 return -EOPNOTSUPP;
1860
1861 /* Do not program filters during reset */
1862 if (ice_is_reset_in_progress(pf->state)) {
1863 dev_err(dev, "Device is resetting - adding Flow Director filters not supported during reset\n");
1864 return -EBUSY;
1865 }
1866
1867 fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1868
1869 if (ice_parse_rx_flow_user_data(fsp, &userdata))
1870 return -EINVAL;
1871
1872 if (fsp->flow_type & FLOW_MAC_EXT)
1873 return -EINVAL;
1874
1875 ret = ice_cfg_fdir_xtrct_seq(pf, fsp, &userdata);
1876 if (ret)
1877 return ret;
1878
1879 if (fsp->location >= ice_get_fdir_cnt_all(hw)) {
1880 dev_err(dev, "Failed to add filter. The maximum number of flow director filters has been reached.\n");
1881 return -ENOSPC;
1882 }
1883
1884 /* return error if not an update and no available filters */
1885 fltrs_needed = ice_get_open_tunnel_port(hw, &tunnel_port, TNL_ALL) ? 2 : 1;
1886 if (!ice_fdir_find_fltr_by_idx(hw, fsp->location) &&
1887 ice_fdir_num_avail_fltr(hw, pf->vsi[vsi->idx]) < fltrs_needed) {
1888 dev_err(dev, "Failed to add filter. The maximum number of flow director filters has been reached.\n");
1889 return -ENOSPC;
1890 }
1891
1892 input = devm_kzalloc(dev, sizeof(*input), GFP_KERNEL);
1893 if (!input)
1894 return -ENOMEM;
1895
1896 ret = ice_set_fdir_input_set(vsi, fsp, input);
1897 if (ret)
1898 goto free_input;
1899
1900 mutex_lock(&hw->fdir_fltr_lock);
1901 if (ice_fdir_is_dup_fltr(hw, input)) {
1902 ret = -EINVAL;
1903 goto release_lock;
1904 }
1905
1906 if (userdata.flex_fltr) {
1907 input->flex_fltr = true;
1908 input->flex_word = cpu_to_be16(userdata.flex_word);
1909 input->flex_offset = userdata.flex_offset;
1910 }
1911
1912 input->cnt_ena = ICE_FXD_FLTR_QW0_STAT_ENA_PKTS;
1913 input->fdid_prio = ICE_FXD_FLTR_QW1_FDID_PRI_THREE;
1914 input->comp_report = ICE_FXD_FLTR_QW0_COMP_REPORT_SW_FAIL;
1915
1916 /* input struct is added to the HW filter list */
1917 ret = ice_fdir_update_list_entry(pf, input, fsp->location);
1918 if (ret)
1919 goto release_lock;
1920
1921 ret = ice_fdir_write_all_fltr(pf, input, true);
1922 if (ret)
1923 goto remove_sw_rule;
1924
1925 goto release_lock;
1926
1927 remove_sw_rule:
1928 ice_fdir_update_cntrs(hw, input->flow_type, false);
1929 /* update sb-filters count, specific to ring->channel */
1930 ice_update_per_q_fltr(vsi, input->orig_q_index, false);
1931 list_del(&input->fltr_node);
1932 release_lock:
1933 mutex_unlock(&hw->fdir_fltr_lock);
1934 free_input:
1935 if (ret)
1936 devm_kfree(dev, input);
1937
1938 return ret;
1939 }
1940
