2 * This file is part of the Chelsio T4/T5/T6 Ethernet driver for Linux.
4 * Copyright (c) 2017 Chelsio Communications, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #include <net/tc_act/tc_mirred.h>
36 #include <net/tc_act/tc_pedit.h>
37 #include <net/tc_act/tc_gact.h>
38 #include <net/tc_act/tc_vlan.h>
41 #include "cxgb4_filter.h"
42 #include "cxgb4_tc_flower.h"
44 #define STATS_CHECK_PERIOD (HZ / 2)
46 static struct ch_tc_pedit_fields pedits[] = {
47 PEDIT_FIELDS(ETH_, DMAC_31_0, 4, dmac, 0),
48 PEDIT_FIELDS(ETH_, DMAC_47_32, 2, dmac, 4),
49 PEDIT_FIELDS(ETH_, SMAC_15_0, 2, smac, 0),
50 PEDIT_FIELDS(ETH_, SMAC_47_16, 4, smac, 2),
51 PEDIT_FIELDS(IP4_, SRC, 4, nat_fip, 0),
52 PEDIT_FIELDS(IP4_, DST, 4, nat_lip, 0),
53 PEDIT_FIELDS(IP6_, SRC_31_0, 4, nat_fip, 0),
54 PEDIT_FIELDS(IP6_, SRC_63_32, 4, nat_fip, 4),
55 PEDIT_FIELDS(IP6_, SRC_95_64, 4, nat_fip, 8),
56 PEDIT_FIELDS(IP6_, SRC_127_96, 4, nat_fip, 12),
57 PEDIT_FIELDS(IP6_, DST_31_0, 4, nat_lip, 0),
58 PEDIT_FIELDS(IP6_, DST_63_32, 4, nat_lip, 4),
59 PEDIT_FIELDS(IP6_, DST_95_64, 4, nat_lip, 8),
60 PEDIT_FIELDS(IP6_, DST_127_96, 4, nat_lip, 12),
61 PEDIT_FIELDS(TCP_, SPORT, 2, nat_fport, 0),
62 PEDIT_FIELDS(TCP_, DPORT, 2, nat_lport, 0),
63 PEDIT_FIELDS(UDP_, SPORT, 2, nat_fport, 0),
64 PEDIT_FIELDS(UDP_, DPORT, 2, nat_lport, 0),
67 static struct ch_tc_flower_entry *allocate_flower_entry(void)
69 struct ch_tc_flower_entry *new = kzalloc(sizeof(*new), GFP_KERNEL);
70 spin_lock_init(&new->lock);
74 /* Must be called with either RTNL or rcu_read_lock */
75 static struct ch_tc_flower_entry *ch_flower_lookup(struct adapter *adap,
76 unsigned long flower_cookie)
78 return rhashtable_lookup_fast(&adap->flower_tbl, &flower_cookie,
79 adap->flower_ht_params);
82 static void cxgb4_process_flow_match(struct net_device *dev,
83 struct tc_cls_flower_offload *cls,
84 struct ch_filter_specification *fs)
88 if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
89 struct flow_dissector_key_control *key =
90 skb_flow_dissector_target(cls->dissector,
91 FLOW_DISSECTOR_KEY_CONTROL,
94 addr_type = key->addr_type;
97 if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
98 struct flow_dissector_key_basic *key =
99 skb_flow_dissector_target(cls->dissector,
100 FLOW_DISSECTOR_KEY_BASIC,
102 struct flow_dissector_key_basic *mask =
103 skb_flow_dissector_target(cls->dissector,
104 FLOW_DISSECTOR_KEY_BASIC,
106 u16 ethtype_key = ntohs(key->n_proto);
107 u16 ethtype_mask = ntohs(mask->n_proto);
109 if (ethtype_key == ETH_P_ALL) {
114 if (ethtype_key == ETH_P_IPV6)
117 fs->val.ethtype = ethtype_key;
118 fs->mask.ethtype = ethtype_mask;
119 fs->val.proto = key->ip_proto;
120 fs->mask.proto = mask->ip_proto;
123 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
124 struct flow_dissector_key_ipv4_addrs *key =
125 skb_flow_dissector_target(cls->dissector,
126 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
128 struct flow_dissector_key_ipv4_addrs *mask =
129 skb_flow_dissector_target(cls->dissector,
130 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
133 memcpy(&fs->val.lip[0], &key->dst, sizeof(key->dst));
134 memcpy(&fs->val.fip[0], &key->src, sizeof(key->src));
135 memcpy(&fs->mask.lip[0], &mask->dst, sizeof(mask->dst));
136 memcpy(&fs->mask.fip[0], &mask->src, sizeof(mask->src));
138 /* also initialize nat_lip/fip to same values */
139 memcpy(&fs->nat_lip[0], &key->dst, sizeof(key->dst));
140 memcpy(&fs->nat_fip[0], &key->src, sizeof(key->src));
144 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
145 struct flow_dissector_key_ipv6_addrs *key =
146 skb_flow_dissector_target(cls->dissector,
147 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
149 struct flow_dissector_key_ipv6_addrs *mask =
150 skb_flow_dissector_target(cls->dissector,
151 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
155 memcpy(&fs->val.lip[0], key->dst.s6_addr, sizeof(key->dst));
156 memcpy(&fs->val.fip[0], key->src.s6_addr, sizeof(key->src));
157 memcpy(&fs->mask.lip[0], mask->dst.s6_addr, sizeof(mask->dst));
158 memcpy(&fs->mask.fip[0], mask->src.s6_addr, sizeof(mask->src));
160 /* also initialize nat_lip/fip to same values */
161 memcpy(&fs->nat_lip[0], key->dst.s6_addr, sizeof(key->dst));
162 memcpy(&fs->nat_fip[0], key->src.s6_addr, sizeof(key->src));
165 if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
166 struct flow_dissector_key_ports *key, *mask;
168 key = skb_flow_dissector_target(cls->dissector,
169 FLOW_DISSECTOR_KEY_PORTS,
171 mask = skb_flow_dissector_target(cls->dissector,
172 FLOW_DISSECTOR_KEY_PORTS,
174 fs->val.lport = cpu_to_be16(key->dst);
175 fs->mask.lport = cpu_to_be16(mask->dst);
176 fs->val.fport = cpu_to_be16(key->src);
177 fs->mask.fport = cpu_to_be16(mask->src);
179 /* also initialize nat_lport/fport to same values */
180 fs->nat_lport = cpu_to_be16(key->dst);
181 fs->nat_fport = cpu_to_be16(key->src);
184 if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_IP)) {
185 struct flow_dissector_key_ip *key, *mask;
187 key = skb_flow_dissector_target(cls->dissector,
188 FLOW_DISSECTOR_KEY_IP,
190 mask = skb_flow_dissector_target(cls->dissector,
191 FLOW_DISSECTOR_KEY_IP,
193 fs->val.tos = key->tos;
194 fs->mask.tos = mask->tos;
197 if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
198 struct flow_dissector_key_keyid *key, *mask;
200 key = skb_flow_dissector_target(cls->dissector,
201 FLOW_DISSECTOR_KEY_ENC_KEYID,
203 mask = skb_flow_dissector_target(cls->dissector,
204 FLOW_DISSECTOR_KEY_ENC_KEYID,
206 fs->val.vni = be32_to_cpu(key->keyid);
207 fs->mask.vni = be32_to_cpu(mask->keyid);
209 fs->val.encap_vld = 1;
210 fs->mask.encap_vld = 1;
214 if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
215 struct flow_dissector_key_vlan *key, *mask;
216 u16 vlan_tci, vlan_tci_mask;
218 key = skb_flow_dissector_target(cls->dissector,
219 FLOW_DISSECTOR_KEY_VLAN,
221 mask = skb_flow_dissector_target(cls->dissector,
222 FLOW_DISSECTOR_KEY_VLAN,
224 vlan_tci = key->vlan_id | (key->vlan_priority <<
226 vlan_tci_mask = mask->vlan_id | (mask->vlan_priority <<
228 fs->val.ivlan = vlan_tci;
229 fs->mask.ivlan = vlan_tci_mask;
231 /* Chelsio adapters use ivlan_vld bit to match vlan packets
232 * as 802.1Q. Also, when vlan tag is present in packets,
233 * ethtype match is used then to match on ethtype of inner
234 * header ie. the header following the vlan header.
235 * So, set the ivlan_vld based on ethtype info supplied by
236 * TC for vlan packets if its 802.1Q. And then reset the
237 * ethtype value else, hw will try to match the supplied
238 * ethtype value with ethtype of inner header.
240 if (fs->val.ethtype == ETH_P_8021Q) {
241 fs->val.ivlan_vld = 1;
242 fs->mask.ivlan_vld = 1;
244 fs->mask.ethtype = 0;
248 /* Match only packets coming from the ingress port where this
249 * filter will be created.
251 fs->val.iport = netdev2pinfo(dev)->port_id;
255 static int cxgb4_validate_flow_match(struct net_device *dev,
256 struct tc_cls_flower_offload *cls)
258 u16 ethtype_mask = 0;
261 if (cls->dissector->used_keys &
262 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
263 BIT(FLOW_DISSECTOR_KEY_BASIC) |
264 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
265 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
266 BIT(FLOW_DISSECTOR_KEY_PORTS) |
267 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
268 BIT(FLOW_DISSECTOR_KEY_VLAN) |
269 BIT(FLOW_DISSECTOR_KEY_IP))) {
270 netdev_warn(dev, "Unsupported key used: 0x%x\n",
271 cls->dissector->used_keys);
275 if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
276 struct flow_dissector_key_basic *key =
277 skb_flow_dissector_target(cls->dissector,
278 FLOW_DISSECTOR_KEY_BASIC,
280 struct flow_dissector_key_basic *mask =
281 skb_flow_dissector_target(cls->dissector,
282 FLOW_DISSECTOR_KEY_BASIC,
284 ethtype_key = ntohs(key->n_proto);
285 ethtype_mask = ntohs(mask->n_proto);
288 if (dissector_uses_key(cls->dissector, FLOW_DISSECTOR_KEY_IP)) {
289 u16 eth_ip_type = ethtype_key & ethtype_mask;
290 struct flow_dissector_key_ip *mask;
292 if (eth_ip_type != ETH_P_IP && eth_ip_type != ETH_P_IPV6) {
293 netdev_err(dev, "IP Key supported only with IPv4/v6");
297 mask = skb_flow_dissector_target(cls->dissector,
298 FLOW_DISSECTOR_KEY_IP,
301 netdev_warn(dev, "ttl match unsupported for offload");
309 static void offload_pedit(struct ch_filter_specification *fs, u32 val, u32 mask,
312 u32 set_val = val & ~mask;
317 for (i = 0; i < ARRAY_SIZE(pedits); i++) {
318 if (pedits[i].field == field) {
319 offset = pedits[i].offset;
320 size = pedits[i].size;
324 memcpy((u8 *)fs + offset, &set_val, size);
327 static void process_pedit_field(struct ch_filter_specification *fs, u32 val,
328 u32 mask, u32 offset, u8 htype)
331 case TCA_PEDIT_KEY_EX_HDR_TYPE_ETH:
333 case PEDIT_ETH_DMAC_31_0:
335 offload_pedit(fs, val, mask, ETH_DMAC_31_0);
337 case PEDIT_ETH_DMAC_47_32_SMAC_15_0:
338 if (~mask & PEDIT_ETH_DMAC_MASK)
339 offload_pedit(fs, val, mask, ETH_DMAC_47_32);
341 offload_pedit(fs, val >> 16, mask >> 16,
344 case PEDIT_ETH_SMAC_47_16:
346 offload_pedit(fs, val, mask, ETH_SMAC_47_16);
349 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4:
352 offload_pedit(fs, val, mask, IP4_SRC);
355 offload_pedit(fs, val, mask, IP4_DST);
357 fs->nat_mode = NAT_MODE_ALL;
359 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6:
361 case PEDIT_IP6_SRC_31_0:
362 offload_pedit(fs, val, mask, IP6_SRC_31_0);
364 case PEDIT_IP6_SRC_63_32:
365 offload_pedit(fs, val, mask, IP6_SRC_63_32);
367 case PEDIT_IP6_SRC_95_64:
368 offload_pedit(fs, val, mask, IP6_SRC_95_64);
370 case PEDIT_IP6_SRC_127_96:
371 offload_pedit(fs, val, mask, IP6_SRC_127_96);
373 case PEDIT_IP6_DST_31_0:
374 offload_pedit(fs, val, mask, IP6_DST_31_0);
376 case PEDIT_IP6_DST_63_32:
377 offload_pedit(fs, val, mask, IP6_DST_63_32);
379 case PEDIT_IP6_DST_95_64:
380 offload_pedit(fs, val, mask, IP6_DST_95_64);
382 case PEDIT_IP6_DST_127_96:
383 offload_pedit(fs, val, mask, IP6_DST_127_96);
385 fs->nat_mode = NAT_MODE_ALL;
387 case TCA_PEDIT_KEY_EX_HDR_TYPE_TCP:
389 case PEDIT_TCP_SPORT_DPORT:
390 if (~mask & PEDIT_TCP_UDP_SPORT_MASK)
391 offload_pedit(fs, cpu_to_be32(val) >> 16,
392 cpu_to_be32(mask) >> 16,
395 offload_pedit(fs, cpu_to_be32(val),
396 cpu_to_be32(mask), TCP_DPORT);
398 fs->nat_mode = NAT_MODE_ALL;
400 case TCA_PEDIT_KEY_EX_HDR_TYPE_UDP:
402 case PEDIT_UDP_SPORT_DPORT:
403 if (~mask & PEDIT_TCP_UDP_SPORT_MASK)
404 offload_pedit(fs, cpu_to_be32(val) >> 16,
405 cpu_to_be32(mask) >> 16,
408 offload_pedit(fs, cpu_to_be32(val),
409 cpu_to_be32(mask), UDP_DPORT);
411 fs->nat_mode = NAT_MODE_ALL;
415 static void cxgb4_process_flow_actions(struct net_device *in,
416 struct tc_cls_flower_offload *cls,
417 struct ch_filter_specification *fs)
419 const struct tc_action *a;
422 tcf_exts_for_each_action(i, a, cls->exts) {
423 if (is_tcf_gact_ok(a)) {
424 fs->action = FILTER_PASS;
425 } else if (is_tcf_gact_shot(a)) {
426 fs->action = FILTER_DROP;
427 } else if (is_tcf_mirred_egress_redirect(a)) {
428 struct net_device *out = tcf_mirred_dev(a);
429 struct port_info *pi = netdev_priv(out);
431 fs->action = FILTER_SWITCH;
432 fs->eport = pi->port_id;
433 } else if (is_tcf_vlan(a)) {
434 u32 vlan_action = tcf_vlan_action(a);
435 u8 prio = tcf_vlan_push_prio(a);
436 u16 vid = tcf_vlan_push_vid(a);
437 u16 vlan_tci = (prio << VLAN_PRIO_SHIFT) | vid;
439 switch (vlan_action) {
440 case TCA_VLAN_ACT_POP:
441 fs->newvlan |= VLAN_REMOVE;
443 case TCA_VLAN_ACT_PUSH:
444 fs->newvlan |= VLAN_INSERT;
447 case TCA_VLAN_ACT_MODIFY:
448 fs->newvlan |= VLAN_REWRITE;
454 } else if (is_tcf_pedit(a)) {
455 u32 mask, val, offset;
459 nkeys = tcf_pedit_nkeys(a);
460 for (i = 0; i < nkeys; i++) {
461 htype = tcf_pedit_htype(a, i);
462 mask = tcf_pedit_mask(a, i);
463 val = tcf_pedit_val(a, i);
464 offset = tcf_pedit_offset(a, i);
466 process_pedit_field(fs, val, mask, offset,
473 static bool valid_l4_mask(u32 mask)
477 /* Either the upper 16-bits (SPORT) OR the lower
478 * 16-bits (DPORT) can be set, but NOT BOTH.
480 hi = (mask >> 16) & 0xFFFF;
483 return hi && lo ? false : true;
486 static bool valid_pedit_action(struct net_device *dev,
487 const struct tc_action *a)
493 nkeys = tcf_pedit_nkeys(a);
494 for (i = 0; i < nkeys; i++) {
495 htype = tcf_pedit_htype(a, i);
496 cmd = tcf_pedit_cmd(a, i);
497 mask = tcf_pedit_mask(a, i);
498 offset = tcf_pedit_offset(a, i);
500 if (cmd != TCA_PEDIT_KEY_EX_CMD_SET) {
501 netdev_err(dev, "%s: Unsupported pedit cmd\n",
507 case TCA_PEDIT_KEY_EX_HDR_TYPE_ETH:
509 case PEDIT_ETH_DMAC_31_0:
510 case PEDIT_ETH_DMAC_47_32_SMAC_15_0:
511 case PEDIT_ETH_SMAC_47_16:
514 netdev_err(dev, "%s: Unsupported pedit field\n",
519 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4:
525 netdev_err(dev, "%s: Unsupported pedit field\n",
530 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6:
532 case PEDIT_IP6_SRC_31_0:
533 case PEDIT_IP6_SRC_63_32:
534 case PEDIT_IP6_SRC_95_64:
535 case PEDIT_IP6_SRC_127_96:
536 case PEDIT_IP6_DST_31_0:
537 case PEDIT_IP6_DST_63_32:
538 case PEDIT_IP6_DST_95_64:
539 case PEDIT_IP6_DST_127_96:
542 netdev_err(dev, "%s: Unsupported pedit field\n",
547 case TCA_PEDIT_KEY_EX_HDR_TYPE_TCP:
549 case PEDIT_TCP_SPORT_DPORT:
550 if (!valid_l4_mask(~mask)) {
551 netdev_err(dev, "%s: Unsupported mask for TCP L4 ports\n",
557 netdev_err(dev, "%s: Unsupported pedit field\n",
562 case TCA_PEDIT_KEY_EX_HDR_TYPE_UDP:
564 case PEDIT_UDP_SPORT_DPORT:
565 if (!valid_l4_mask(~mask)) {
566 netdev_err(dev, "%s: Unsupported mask for UDP L4 ports\n",
572 netdev_err(dev, "%s: Unsupported pedit field\n",
578 netdev_err(dev, "%s: Unsupported pedit type\n",
586 static int cxgb4_validate_flow_actions(struct net_device *dev,
587 struct tc_cls_flower_offload *cls)
589 const struct tc_action *a;
590 bool act_redir = false;
591 bool act_pedit = false;
592 bool act_vlan = false;
595 tcf_exts_for_each_action(i, a, cls->exts) {
596 if (is_tcf_gact_ok(a)) {
598 } else if (is_tcf_gact_shot(a)) {
600 } else if (is_tcf_mirred_egress_redirect(a)) {
601 struct adapter *adap = netdev2adap(dev);
602 struct net_device *n_dev, *target_dev;
606 target_dev = tcf_mirred_dev(a);
607 for_each_port(adap, i) {
608 n_dev = adap->port[i];
609 if (target_dev == n_dev) {
615 /* If interface doesn't belong to our hw, then
616 * the provided output port is not valid
619 netdev_err(dev, "%s: Out port invalid\n",
624 } else if (is_tcf_vlan(a)) {
625 u16 proto = be16_to_cpu(tcf_vlan_push_proto(a));
626 u32 vlan_action = tcf_vlan_action(a);
628 switch (vlan_action) {
629 case TCA_VLAN_ACT_POP:
631 case TCA_VLAN_ACT_PUSH:
632 case TCA_VLAN_ACT_MODIFY:
633 if (proto != ETH_P_8021Q) {
634 netdev_err(dev, "%s: Unsupported vlan proto\n",
640 netdev_err(dev, "%s: Unsupported vlan action\n",
645 } else if (is_tcf_pedit(a)) {
646 bool pedit_valid = valid_pedit_action(dev, a);
652 netdev_err(dev, "%s: Unsupported action\n", __func__);
657 if ((act_pedit || act_vlan) && !act_redir) {
658 netdev_err(dev, "%s: pedit/vlan rewrite invalid without egress redirect\n",
666 int cxgb4_tc_flower_replace(struct net_device *dev,
667 struct tc_cls_flower_offload *cls)
669 struct adapter *adap = netdev2adap(dev);
670 struct ch_tc_flower_entry *ch_flower;
671 struct ch_filter_specification *fs;
672 struct filter_ctx ctx;
676 if (cxgb4_validate_flow_actions(dev, cls))
679 if (cxgb4_validate_flow_match(dev, cls))
682 ch_flower = allocate_flower_entry();
684 netdev_err(dev, "%s: ch_flower alloc failed.\n", __func__);
690 cxgb4_process_flow_match(dev, cls, fs);
691 cxgb4_process_flow_actions(dev, cls, fs);
693 fs->hash = is_filter_exact_match(adap, fs);
697 fidx = cxgb4_get_free_ftid(dev, fs->type ? PF_INET6 : PF_INET);
699 netdev_err(dev, "%s: No fidx for offload.\n", __func__);
705 init_completion(&ctx.completion);
706 ret = __cxgb4_set_filter(dev, fidx, fs, &ctx);
708 netdev_err(dev, "%s: filter creation err %d\n",
714 ret = wait_for_completion_timeout(&ctx.completion, 10 * HZ);
721 /* Check if hw returned error for filter creation */
723 netdev_err(dev, "%s: filter creation err %d\n",
728 ch_flower->tc_flower_cookie = cls->cookie;
729 ch_flower->filter_id = ctx.tid;
730 ret = rhashtable_insert_fast(&adap->flower_tbl, &ch_flower->node,
731 adap->flower_ht_params);
738 cxgb4_del_filter(dev, ch_flower->filter_id, &ch_flower->fs);
745 int cxgb4_tc_flower_destroy(struct net_device *dev,
746 struct tc_cls_flower_offload *cls)
748 struct adapter *adap = netdev2adap(dev);
749 struct ch_tc_flower_entry *ch_flower;
752 ch_flower = ch_flower_lookup(adap, cls->cookie);
756 ret = cxgb4_del_filter(dev, ch_flower->filter_id, &ch_flower->fs);
760 ret = rhashtable_remove_fast(&adap->flower_tbl, &ch_flower->node,
761 adap->flower_ht_params);
763 netdev_err(dev, "Flow remove from rhashtable failed");
766 kfree_rcu(ch_flower, rcu);
772 static void ch_flower_stats_handler(struct work_struct *work)
774 struct adapter *adap = container_of(work, struct adapter,
776 struct ch_tc_flower_entry *flower_entry;
777 struct ch_tc_flower_stats *ofld_stats;
778 struct rhashtable_iter iter;
783 rhashtable_walk_enter(&adap->flower_tbl, &iter);
785 rhashtable_walk_start(&iter);
787 while ((flower_entry = rhashtable_walk_next(&iter)) &&
788 !IS_ERR(flower_entry)) {
789 ret = cxgb4_get_filter_counters(adap->port[0],
790 flower_entry->filter_id,
792 flower_entry->fs.hash);
794 spin_lock(&flower_entry->lock);
795 ofld_stats = &flower_entry->stats;
797 if (ofld_stats->prev_packet_count != packets) {
798 ofld_stats->prev_packet_count = packets;
799 ofld_stats->last_used = jiffies;
801 spin_unlock(&flower_entry->lock);
805 rhashtable_walk_stop(&iter);
807 } while (flower_entry == ERR_PTR(-EAGAIN));
808 rhashtable_walk_exit(&iter);
809 mod_timer(&adap->flower_stats_timer, jiffies + STATS_CHECK_PERIOD);
812 static void ch_flower_stats_cb(struct timer_list *t)
814 struct adapter *adap = from_timer(adap, t, flower_stats_timer);
816 schedule_work(&adap->flower_stats_work);
819 int cxgb4_tc_flower_stats(struct net_device *dev,
820 struct tc_cls_flower_offload *cls)
822 struct adapter *adap = netdev2adap(dev);
823 struct ch_tc_flower_stats *ofld_stats;
824 struct ch_tc_flower_entry *ch_flower;
829 ch_flower = ch_flower_lookup(adap, cls->cookie);
835 ret = cxgb4_get_filter_counters(dev, ch_flower->filter_id,
841 spin_lock_bh(&ch_flower->lock);
842 ofld_stats = &ch_flower->stats;
843 if (ofld_stats->packet_count != packets) {
844 if (ofld_stats->prev_packet_count != packets)
845 ofld_stats->last_used = jiffies;
846 tcf_exts_stats_update(cls->exts, bytes - ofld_stats->byte_count,
847 packets - ofld_stats->packet_count,
848 ofld_stats->last_used);
850 ofld_stats->packet_count = packets;
851 ofld_stats->byte_count = bytes;
852 ofld_stats->prev_packet_count = packets;
854 spin_unlock_bh(&ch_flower->lock);
861 static const struct rhashtable_params cxgb4_tc_flower_ht_params = {
863 .head_offset = offsetof(struct ch_tc_flower_entry, node),
864 .key_offset = offsetof(struct ch_tc_flower_entry, tc_flower_cookie),
865 .key_len = sizeof(((struct ch_tc_flower_entry *)0)->tc_flower_cookie),
868 .automatic_shrinking = true
871 int cxgb4_init_tc_flower(struct adapter *adap)
875 if (adap->tc_flower_initialized)
878 adap->flower_ht_params = cxgb4_tc_flower_ht_params;
879 ret = rhashtable_init(&adap->flower_tbl, &adap->flower_ht_params);
883 INIT_WORK(&adap->flower_stats_work, ch_flower_stats_handler);
884 timer_setup(&adap->flower_stats_timer, ch_flower_stats_cb, 0);
885 mod_timer(&adap->flower_stats_timer, jiffies + STATS_CHECK_PERIOD);
886 adap->tc_flower_initialized = true;
890 void cxgb4_cleanup_tc_flower(struct adapter *adap)
892 if (!adap->tc_flower_initialized)
895 if (adap->flower_stats_timer.function)
896 del_timer_sync(&adap->flower_stats_timer);
897 cancel_work_sync(&adap->flower_stats_work);
898 rhashtable_destroy(&adap->flower_tbl);
899 adap->tc_flower_initialized = false;