1
2
3
4#include <linux/skbuff.h>
5#include <net/devlink.h>
6#include <net/pkt_cls.h>
7
8#include "cmsg.h"
9#include "main.h"
10#include "conntrack.h"
11#include "../nfpcore/nfp_cpp.h"
12#include "../nfpcore/nfp_nsp.h"
13#include "../nfp_app.h"
14#include "../nfp_main.h"
15#include "../nfp_net.h"
16#include "../nfp_port.h"
17
18#define NFP_FLOWER_SUPPORTED_TCPFLAGS \
19 (TCPHDR_FIN | TCPHDR_SYN | TCPHDR_RST | \
20 TCPHDR_PSH | TCPHDR_URG)
21
22#define NFP_FLOWER_SUPPORTED_CTLFLAGS \
23 (FLOW_DIS_IS_FRAGMENT | \
24 FLOW_DIS_FIRST_FRAG)
25
26#define NFP_FLOWER_WHITELIST_DISSECTOR \
27 (BIT(FLOW_DISSECTOR_KEY_CONTROL) | \
28 BIT(FLOW_DISSECTOR_KEY_BASIC) | \
29 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | \
30 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | \
31 BIT(FLOW_DISSECTOR_KEY_TCP) | \
32 BIT(FLOW_DISSECTOR_KEY_PORTS) | \
33 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | \
34 BIT(FLOW_DISSECTOR_KEY_VLAN) | \
35 BIT(FLOW_DISSECTOR_KEY_CVLAN) | \
36 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | \
37 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | \
38 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | \
39 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | \
40 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | \
41 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) | \
42 BIT(FLOW_DISSECTOR_KEY_ENC_IP) | \
43 BIT(FLOW_DISSECTOR_KEY_MPLS) | \
44 BIT(FLOW_DISSECTOR_KEY_CT) | \
45 BIT(FLOW_DISSECTOR_KEY_META) | \
46 BIT(FLOW_DISSECTOR_KEY_IP))
47
48#define NFP_FLOWER_WHITELIST_TUN_DISSECTOR \
49 (BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | \
50 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | \
51 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | \
52 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | \
53 BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) | \
54 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | \
55 BIT(FLOW_DISSECTOR_KEY_ENC_IP))
56
57#define NFP_FLOWER_WHITELIST_TUN_DISSECTOR_R \
58 (BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | \
59 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS))
60
61#define NFP_FLOWER_WHITELIST_TUN_DISSECTOR_V6_R \
62 (BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | \
63 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS))
64
65#define NFP_FLOWER_MERGE_FIELDS \
66 (NFP_FLOWER_LAYER_PORT | \
67 NFP_FLOWER_LAYER_MAC | \
68 NFP_FLOWER_LAYER_TP | \
69 NFP_FLOWER_LAYER_IPV4 | \
70 NFP_FLOWER_LAYER_IPV6)
71
72#define NFP_FLOWER_PRE_TUN_RULE_FIELDS \
73 (NFP_FLOWER_LAYER_EXT_META | \
74 NFP_FLOWER_LAYER_PORT | \
75 NFP_FLOWER_LAYER_MAC | \
76 NFP_FLOWER_LAYER_IPV4 | \
77 NFP_FLOWER_LAYER_IPV6)
78
79struct nfp_flower_merge_check {
80 union {
81 struct {
82 __be16 tci;
83 struct nfp_flower_mac_mpls l2;
84 struct nfp_flower_tp_ports l4;
85 union {
86 struct nfp_flower_ipv4 ipv4;
87 struct nfp_flower_ipv6 ipv6;
88 };
89 };
90 unsigned long vals[8];
91 };
92};
93
94int
95nfp_flower_xmit_flow(struct nfp_app *app, struct nfp_fl_payload *nfp_flow,
96 u8 mtype)
97{
98 u32 meta_len, key_len, mask_len, act_len, tot_len;
99 struct sk_buff *skb;
100 unsigned char *msg;
101
102 meta_len = sizeof(struct nfp_fl_rule_metadata);
103 key_len = nfp_flow->meta.key_len;
104 mask_len = nfp_flow->meta.mask_len;
105 act_len = nfp_flow->meta.act_len;
106
107 tot_len = meta_len + key_len + mask_len + act_len;
108
109
110
111
112 nfp_flow->meta.key_len >>= NFP_FL_LW_SIZ;
113 nfp_flow->meta.mask_len >>= NFP_FL_LW_SIZ;
114 nfp_flow->meta.act_len >>= NFP_FL_LW_SIZ;
115
116 skb = nfp_flower_cmsg_alloc(app, tot_len, mtype, GFP_KERNEL);
117 if (!skb)
118 return -ENOMEM;
119
120 msg = nfp_flower_cmsg_get_data(skb);
121 memcpy(msg, &nfp_flow->meta, meta_len);
122 memcpy(&msg[meta_len], nfp_flow->unmasked_data, key_len);
123 memcpy(&msg[meta_len + key_len], nfp_flow->mask_data, mask_len);
124 memcpy(&msg[meta_len + key_len + mask_len],
125 nfp_flow->action_data, act_len);
126
127
128
129
130 nfp_flow->meta.key_len <<= NFP_FL_LW_SIZ;
131 nfp_flow->meta.mask_len <<= NFP_FL_LW_SIZ;
132 nfp_flow->meta.act_len <<= NFP_FL_LW_SIZ;
133
134 nfp_ctrl_tx(app->ctrl, skb);
135
136 return 0;
137}
138
139static bool nfp_flower_check_higher_than_mac(struct flow_rule *rule)
140{
141 return flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS) ||
142 flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPV6_ADDRS) ||
143 flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS) ||
144 flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ICMP);
145}
146
147static bool nfp_flower_check_higher_than_l3(struct flow_rule *rule)
148{
149 return flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS) ||
150 flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ICMP);
151}
152
153static int
154nfp_flower_calc_opt_layer(struct flow_dissector_key_enc_opts *enc_opts,
155 u32 *key_layer_two, int *key_size, bool ipv6,
156 struct netlink_ext_ack *extack)
157{
158 if (enc_opts->len > NFP_FL_MAX_GENEVE_OPT_KEY ||
159 (ipv6 && enc_opts->len > NFP_FL_MAX_GENEVE_OPT_KEY_V6)) {
160 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: geneve options exceed maximum length");
161 return -EOPNOTSUPP;
162 }
163
164 if (enc_opts->len > 0) {
165 *key_layer_two |= NFP_FLOWER_LAYER2_GENEVE_OP;
166 *key_size += sizeof(struct nfp_flower_geneve_options);
167 }
168
169 return 0;
170}
171
172static int
173nfp_flower_calc_udp_tun_layer(struct flow_dissector_key_ports *enc_ports,
174 struct flow_dissector_key_enc_opts *enc_op,
175 u32 *key_layer_two, u8 *key_layer, int *key_size,
176 struct nfp_flower_priv *priv,
177 enum nfp_flower_tun_type *tun_type, bool ipv6,
178 struct netlink_ext_ack *extack)
179{
180 int err;
181
182 switch (enc_ports->dst) {
183 case htons(IANA_VXLAN_UDP_PORT):
184 *tun_type = NFP_FL_TUNNEL_VXLAN;
185 *key_layer |= NFP_FLOWER_LAYER_VXLAN;
186
187 if (ipv6) {
188 *key_layer |= NFP_FLOWER_LAYER_EXT_META;
189 *key_size += sizeof(struct nfp_flower_ext_meta);
190 *key_layer_two |= NFP_FLOWER_LAYER2_TUN_IPV6;
191 *key_size += sizeof(struct nfp_flower_ipv6_udp_tun);
192 } else {
193 *key_size += sizeof(struct nfp_flower_ipv4_udp_tun);
194 }
195
196 if (enc_op) {
197 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: encap options not supported on vxlan tunnels");
198 return -EOPNOTSUPP;
199 }
200 break;
201 case htons(GENEVE_UDP_PORT):
202 if (!(priv->flower_ext_feats & NFP_FL_FEATS_GENEVE)) {
203 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support geneve offload");
204 return -EOPNOTSUPP;
205 }
206 *tun_type = NFP_FL_TUNNEL_GENEVE;
207 *key_layer |= NFP_FLOWER_LAYER_EXT_META;
208 *key_size += sizeof(struct nfp_flower_ext_meta);
209 *key_layer_two |= NFP_FLOWER_LAYER2_GENEVE;
210
211 if (ipv6) {
212 *key_layer_two |= NFP_FLOWER_LAYER2_TUN_IPV6;
213 *key_size += sizeof(struct nfp_flower_ipv6_udp_tun);
214 } else {
215 *key_size += sizeof(struct nfp_flower_ipv4_udp_tun);
216 }
217
218 if (!enc_op)
219 break;
220 if (!(priv->flower_ext_feats & NFP_FL_FEATS_GENEVE_OPT)) {
221 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support geneve option offload");
222 return -EOPNOTSUPP;
223 }
224 err = nfp_flower_calc_opt_layer(enc_op, key_layer_two, key_size,
225 ipv6, extack);
226 if (err)
227 return err;
228 break;
229 default:
230 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: tunnel type unknown");
231 return -EOPNOTSUPP;
232 }
233
234 return 0;
235}
236
237int
238nfp_flower_calculate_key_layers(struct nfp_app *app,
239 struct net_device *netdev,
240 struct nfp_fl_key_ls *ret_key_ls,
241 struct flow_rule *rule,
242 enum nfp_flower_tun_type *tun_type,
243 struct netlink_ext_ack *extack)
244{
245 struct flow_dissector *dissector = rule->match.dissector;
246 struct flow_match_basic basic = { NULL, NULL};
247 struct nfp_flower_priv *priv = app->priv;
248 u32 key_layer_two;
249 u8 key_layer;
250 int key_size;
251 int err;
252
253 if (dissector->used_keys & ~NFP_FLOWER_WHITELIST_DISSECTOR) {
254 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: match not supported");
255 return -EOPNOTSUPP;
256 }
257
258
259 if (dissector->used_keys & NFP_FLOWER_WHITELIST_TUN_DISSECTOR &&
260 (dissector->used_keys & NFP_FLOWER_WHITELIST_TUN_DISSECTOR_V6_R)
261 != NFP_FLOWER_WHITELIST_TUN_DISSECTOR_V6_R &&
262 (dissector->used_keys & NFP_FLOWER_WHITELIST_TUN_DISSECTOR_R)
263 != NFP_FLOWER_WHITELIST_TUN_DISSECTOR_R) {
264 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: tunnel match not supported");
265 return -EOPNOTSUPP;
266 }
267
268 key_layer_two = 0;
269 key_layer = NFP_FLOWER_LAYER_PORT;
270 key_size = sizeof(struct nfp_flower_meta_tci) +
271 sizeof(struct nfp_flower_in_port);
272
273 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS) ||
274 flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS)) {
275 key_layer |= NFP_FLOWER_LAYER_MAC;
276 key_size += sizeof(struct nfp_flower_mac_mpls);
277 }
278
279 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
280 struct flow_match_vlan vlan;
281
282 flow_rule_match_vlan(rule, &vlan);
283 if (!(priv->flower_ext_feats & NFP_FL_FEATS_VLAN_PCP) &&
284 vlan.key->vlan_priority) {
285 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support VLAN PCP offload");
286 return -EOPNOTSUPP;
287 }
288 if (priv->flower_ext_feats & NFP_FL_FEATS_VLAN_QINQ &&
289 !(key_layer_two & NFP_FLOWER_LAYER2_QINQ)) {
290 key_layer |= NFP_FLOWER_LAYER_EXT_META;
291 key_size += sizeof(struct nfp_flower_ext_meta);
292 key_size += sizeof(struct nfp_flower_vlan);
293 key_layer_two |= NFP_FLOWER_LAYER2_QINQ;
294 }
295 }
296
297 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
298 struct flow_match_vlan cvlan;
299
300 if (!(priv->flower_ext_feats & NFP_FL_FEATS_VLAN_QINQ)) {
301 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support VLAN QinQ offload");
302 return -EOPNOTSUPP;
303 }
304
305 flow_rule_match_vlan(rule, &cvlan);
306 if (!(key_layer_two & NFP_FLOWER_LAYER2_QINQ)) {
307 key_layer |= NFP_FLOWER_LAYER_EXT_META;
308 key_size += sizeof(struct nfp_flower_ext_meta);
309 key_size += sizeof(struct nfp_flower_vlan);
310 key_layer_two |= NFP_FLOWER_LAYER2_QINQ;
311 }
312 }
313
314 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
315 struct flow_match_enc_opts enc_op = { NULL, NULL };
316 struct flow_match_ipv4_addrs ipv4_addrs;
317 struct flow_match_ipv6_addrs ipv6_addrs;
318 struct flow_match_control enc_ctl;
319 struct flow_match_ports enc_ports;
320 bool ipv6_tun = false;
321
322 flow_rule_match_enc_control(rule, &enc_ctl);
323
324 if (enc_ctl.mask->addr_type != 0xffff) {
325 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: wildcarded protocols on tunnels are not supported");
326 return -EOPNOTSUPP;
327 }
328
329 ipv6_tun = enc_ctl.key->addr_type ==
330 FLOW_DISSECTOR_KEY_IPV6_ADDRS;
331 if (ipv6_tun &&
332 !(priv->flower_ext_feats & NFP_FL_FEATS_IPV6_TUN)) {
333 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: firmware does not support IPv6 tunnels");
334 return -EOPNOTSUPP;
335 }
336
337 if (!ipv6_tun &&
338 enc_ctl.key->addr_type != FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
339 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: tunnel address type not IPv4 or IPv6");
340 return -EOPNOTSUPP;
341 }
342
343 if (ipv6_tun) {
344 flow_rule_match_enc_ipv6_addrs(rule, &ipv6_addrs);
345 if (memchr_inv(&ipv6_addrs.mask->dst, 0xff,
346 sizeof(ipv6_addrs.mask->dst))) {
347 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: only an exact match IPv6 destination address is supported");
348 return -EOPNOTSUPP;
349 }
350 } else {
351 flow_rule_match_enc_ipv4_addrs(rule, &ipv4_addrs);
352 if (ipv4_addrs.mask->dst != cpu_to_be32(~0)) {
353 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: only an exact match IPv4 destination address is supported");
354 return -EOPNOTSUPP;
355 }
356 }
357
358 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_OPTS))
359 flow_rule_match_enc_opts(rule, &enc_op);
360
361 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
362
363 if (!netif_is_gretap(netdev)) {
364 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: an exact match on L4 destination port is required for non-GRE tunnels");
365 return -EOPNOTSUPP;
366 }
367
368 *tun_type = NFP_FL_TUNNEL_GRE;
369 key_layer |= NFP_FLOWER_LAYER_EXT_META;
370 key_size += sizeof(struct nfp_flower_ext_meta);
371 key_layer_two |= NFP_FLOWER_LAYER2_GRE;
372
373 if (ipv6_tun) {
374 key_layer_two |= NFP_FLOWER_LAYER2_TUN_IPV6;
375 key_size +=
376 sizeof(struct nfp_flower_ipv6_udp_tun);
377 } else {
378 key_size +=
379 sizeof(struct nfp_flower_ipv4_udp_tun);
380 }
381
382 if (enc_op.key) {
383 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: encap options not supported on GRE tunnels");
384 return -EOPNOTSUPP;
385 }
386 } else {
387 flow_rule_match_enc_ports(rule, &enc_ports);
388 if (enc_ports.mask->dst != cpu_to_be16(~0)) {
389 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: only an exact match L4 destination port is supported");
390 return -EOPNOTSUPP;
391 }
392
393 err = nfp_flower_calc_udp_tun_layer(enc_ports.key,
394 enc_op.key,
395 &key_layer_two,
396 &key_layer,
397 &key_size, priv,
398 tun_type, ipv6_tun,
399 extack);
400 if (err)
401 return err;
402
403
404
405
406 if (!nfp_fl_netdev_is_tunnel_type(netdev, *tun_type)) {
407 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: ingress netdev does not match the expected tunnel type");
408 return -EOPNOTSUPP;
409 }
410 }
411 }
412
413 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC))
414 flow_rule_match_basic(rule, &basic);
415
416 if (basic.mask && basic.mask->n_proto) {
417
418 switch (basic.key->n_proto) {
419 case cpu_to_be16(ETH_P_IP):
420 key_layer |= NFP_FLOWER_LAYER_IPV4;
421 key_size += sizeof(struct nfp_flower_ipv4);
422 break;
423
424 case cpu_to_be16(ETH_P_IPV6):
425 key_layer |= NFP_FLOWER_LAYER_IPV6;
426 key_size += sizeof(struct nfp_flower_ipv6);
427 break;
428
429
430
431
432 case cpu_to_be16(ETH_P_ARP):
433 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: ARP not supported");
434 return -EOPNOTSUPP;
435
436 case cpu_to_be16(ETH_P_MPLS_UC):
437 case cpu_to_be16(ETH_P_MPLS_MC):
438 if (!(key_layer & NFP_FLOWER_LAYER_MAC)) {
439 key_layer |= NFP_FLOWER_LAYER_MAC;
440 key_size += sizeof(struct nfp_flower_mac_mpls);
441 }
442 break;
443
444
445 case cpu_to_be16(ETH_P_8021Q):
446 break;
447
448 default:
449 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: match on given EtherType is not supported");
450 return -EOPNOTSUPP;
451 }
452 } else if (nfp_flower_check_higher_than_mac(rule)) {
453 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: cannot match above L2 without specified EtherType");
454 return -EOPNOTSUPP;
455 }
456
457 if (basic.mask && basic.mask->ip_proto) {
458 switch (basic.key->ip_proto) {
459 case IPPROTO_TCP:
460 case IPPROTO_UDP:
461 case IPPROTO_SCTP:
462 case IPPROTO_ICMP:
463 case IPPROTO_ICMPV6:
464 key_layer |= NFP_FLOWER_LAYER_TP;
465 key_size += sizeof(struct nfp_flower_tp_ports);
466 break;
467 }
468 }
469
470 if (!(key_layer & NFP_FLOWER_LAYER_TP) &&
471 nfp_flower_check_higher_than_l3(rule)) {
472 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: cannot match on L4 information without specified IP protocol type");
473 return -EOPNOTSUPP;
474 }
475
476 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
477 struct flow_match_tcp tcp;
478 u32 tcp_flags;
479
480 flow_rule_match_tcp(rule, &tcp);
481 tcp_flags = be16_to_cpu(tcp.key->flags);
482
483 if (tcp_flags & ~NFP_FLOWER_SUPPORTED_TCPFLAGS) {
484 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: no match support for selected TCP flags");
485 return -EOPNOTSUPP;
486 }
487
488
489
490
491 if ((tcp_flags & (TCPHDR_PSH | TCPHDR_URG)) &&
492 !(tcp_flags & (TCPHDR_FIN | TCPHDR_SYN | TCPHDR_RST))) {
493 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: PSH and URG is only supported when used with FIN, SYN or RST");
494 return -EOPNOTSUPP;
495 }
496
497
498
499
500
501 if (!basic.key) {
502 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: match on TCP flags requires a match on L3 protocol");
503 return -EOPNOTSUPP;
504 }
505
506 if (!(key_layer & NFP_FLOWER_LAYER_IPV4) &&
507 !(key_layer & NFP_FLOWER_LAYER_IPV6)) {
508 switch (basic.key->n_proto) {
509 case cpu_to_be16(ETH_P_IP):
510 key_layer |= NFP_FLOWER_LAYER_IPV4;
511 key_size += sizeof(struct nfp_flower_ipv4);
512 break;
513
514 case cpu_to_be16(ETH_P_IPV6):
515 key_layer |= NFP_FLOWER_LAYER_IPV6;
516 key_size += sizeof(struct nfp_flower_ipv6);
517 break;
518
519 default:
520 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: match on TCP flags requires a match on IPv4/IPv6");
521 return -EOPNOTSUPP;
522 }
523 }
524 }
525
526 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
527 struct flow_match_control ctl;
528
529 flow_rule_match_control(rule, &ctl);
530 if (ctl.key->flags & ~NFP_FLOWER_SUPPORTED_CTLFLAGS) {
531 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: match on unknown control flag");
532 return -EOPNOTSUPP;
533 }
534 }
535
536 ret_key_ls->key_layer = key_layer;
537 ret_key_ls->key_layer_two = key_layer_two;
538 ret_key_ls->key_size = key_size;
539
540 return 0;
541}
542
543struct nfp_fl_payload *
544nfp_flower_allocate_new(struct nfp_fl_key_ls *key_layer)
545{
546 struct nfp_fl_payload *flow_pay;
547
548 flow_pay = kmalloc(sizeof(*flow_pay), GFP_KERNEL);
549 if (!flow_pay)
550 return NULL;
551
552 flow_pay->meta.key_len = key_layer->key_size;
553 flow_pay->unmasked_data = kmalloc(key_layer->key_size, GFP_KERNEL);
554 if (!flow_pay->unmasked_data)
555 goto err_free_flow;
556
557 flow_pay->meta.mask_len = key_layer->key_size;
558 flow_pay->mask_data = kmalloc(key_layer->key_size, GFP_KERNEL);
559 if (!flow_pay->mask_data)
560 goto err_free_unmasked;
561
562 flow_pay->action_data = kmalloc(NFP_FL_MAX_A_SIZ, GFP_KERNEL);
563 if (!flow_pay->action_data)
564 goto err_free_mask;
565
566 flow_pay->nfp_tun_ipv4_addr = 0;
567 flow_pay->nfp_tun_ipv6 = NULL;
568 flow_pay->meta.flags = 0;
569 INIT_LIST_HEAD(&flow_pay->linked_flows);
570 flow_pay->in_hw = false;
571 flow_pay->pre_tun_rule.dev = NULL;
572
573 return flow_pay;
574
575err_free_mask:
576 kfree(flow_pay->mask_data);
577err_free_unmasked:
578 kfree(flow_pay->unmasked_data);
579err_free_flow:
580 kfree(flow_pay);
581 return NULL;
582}
583
584static int
585nfp_flower_update_merge_with_actions(struct nfp_fl_payload *flow,
586 struct nfp_flower_merge_check *merge,
587 u8 *last_act_id, int *act_out)
588{
589 struct nfp_fl_set_ipv6_tc_hl_fl *ipv6_tc_hl_fl;
590 struct nfp_fl_set_ip4_ttl_tos *ipv4_ttl_tos;
591 struct nfp_fl_set_ip4_addrs *ipv4_add;
592 struct nfp_fl_set_ipv6_addr *ipv6_add;
593 struct nfp_fl_push_vlan *push_vlan;
594 struct nfp_fl_pre_tunnel *pre_tun;
595 struct nfp_fl_set_tport *tport;
596 struct nfp_fl_set_eth *eth;
597 struct nfp_fl_act_head *a;
598 unsigned int act_off = 0;
599 bool ipv6_tun = false;
600 u8 act_id = 0;
601 u8 *ports;
602 int i;
603
604 while (act_off < flow->meta.act_len) {
605 a = (struct nfp_fl_act_head *)&flow->action_data[act_off];
606 act_id = a->jump_id;
607
608 switch (act_id) {
609 case NFP_FL_ACTION_OPCODE_OUTPUT:
610 if (act_out)
611 (*act_out)++;
612 break;
613 case NFP_FL_ACTION_OPCODE_PUSH_VLAN:
614 push_vlan = (struct nfp_fl_push_vlan *)a;
615 if (push_vlan->vlan_tci)
616 merge->tci = cpu_to_be16(0xffff);
617 break;
618 case NFP_FL_ACTION_OPCODE_POP_VLAN:
619 merge->tci = cpu_to_be16(0);
620 break;
621 case NFP_FL_ACTION_OPCODE_SET_TUNNEL:
622
623 eth_broadcast_addr(&merge->l2.mac_dst[0]);
624 eth_broadcast_addr(&merge->l2.mac_src[0]);
625 memset(&merge->l4, 0xff,
626 sizeof(struct nfp_flower_tp_ports));
627 if (ipv6_tun)
628 memset(&merge->ipv6, 0xff,
629 sizeof(struct nfp_flower_ipv6));
630 else
631 memset(&merge->ipv4, 0xff,
632 sizeof(struct nfp_flower_ipv4));
633 break;
634 case NFP_FL_ACTION_OPCODE_SET_ETHERNET:
635 eth = (struct nfp_fl_set_eth *)a;
636 for (i = 0; i < ETH_ALEN; i++)
637 merge->l2.mac_dst[i] |= eth->eth_addr_mask[i];
638 for (i = 0; i < ETH_ALEN; i++)
639 merge->l2.mac_src[i] |=
640 eth->eth_addr_mask[ETH_ALEN + i];
641 break;
642 case NFP_FL_ACTION_OPCODE_SET_IPV4_ADDRS:
643 ipv4_add = (struct nfp_fl_set_ip4_addrs *)a;
644 merge->ipv4.ipv4_src |= ipv4_add->ipv4_src_mask;
645 merge->ipv4.ipv4_dst |= ipv4_add->ipv4_dst_mask;
646 break;
647 case NFP_FL_ACTION_OPCODE_SET_IPV4_TTL_TOS:
648 ipv4_ttl_tos = (struct nfp_fl_set_ip4_ttl_tos *)a;
649 merge->ipv4.ip_ext.ttl |= ipv4_ttl_tos->ipv4_ttl_mask;
650 merge->ipv4.ip_ext.tos |= ipv4_ttl_tos->ipv4_tos_mask;
651 break;
652 case NFP_FL_ACTION_OPCODE_SET_IPV6_SRC:
653 ipv6_add = (struct nfp_fl_set_ipv6_addr *)a;
654 for (i = 0; i < 4; i++)
655 merge->ipv6.ipv6_src.in6_u.u6_addr32[i] |=
656 ipv6_add->ipv6[i].mask;
657 break;
658 case NFP_FL_ACTION_OPCODE_SET_IPV6_DST:
659 ipv6_add = (struct nfp_fl_set_ipv6_addr *)a;
660 for (i = 0; i < 4; i++)
661 merge->ipv6.ipv6_dst.in6_u.u6_addr32[i] |=
662 ipv6_add->ipv6[i].mask;
663 break;
664 case NFP_FL_ACTION_OPCODE_SET_IPV6_TC_HL_FL:
665 ipv6_tc_hl_fl = (struct nfp_fl_set_ipv6_tc_hl_fl *)a;
666 merge->ipv6.ip_ext.ttl |=
667 ipv6_tc_hl_fl->ipv6_hop_limit_mask;
668 merge->ipv6.ip_ext.tos |= ipv6_tc_hl_fl->ipv6_tc_mask;
669 merge->ipv6.ipv6_flow_label_exthdr |=
670 ipv6_tc_hl_fl->ipv6_label_mask;
671 break;
672 case NFP_FL_ACTION_OPCODE_SET_UDP:
673 case NFP_FL_ACTION_OPCODE_SET_TCP:
674 tport = (struct nfp_fl_set_tport *)a;
675 ports = (u8 *)&merge->l4.port_src;
676 for (i = 0; i < 4; i++)
677 ports[i] |= tport->tp_port_mask[i];
678 break;
679 case NFP_FL_ACTION_OPCODE_PRE_TUNNEL:
680 pre_tun = (struct nfp_fl_pre_tunnel *)a;
681 ipv6_tun = be16_to_cpu(pre_tun->flags) &
682 NFP_FL_PRE_TUN_IPV6;
683 break;
684 case NFP_FL_ACTION_OPCODE_PRE_LAG:
685 case NFP_FL_ACTION_OPCODE_PUSH_GENEVE:
686 break;
687 default:
688 return -EOPNOTSUPP;
689 }
690
691 act_off += a->len_lw << NFP_FL_LW_SIZ;
692 }
693
694 if (last_act_id)
695 *last_act_id = act_id;
696
697 return 0;
698}
699
700static int
701nfp_flower_populate_merge_match(struct nfp_fl_payload *flow,
702 struct nfp_flower_merge_check *merge,
703 bool extra_fields)
704{
705 struct nfp_flower_meta_tci *meta_tci;
706 u8 *mask = flow->mask_data;
707 u8 key_layer, match_size;
708
709 memset(merge, 0, sizeof(struct nfp_flower_merge_check));
710
711 meta_tci = (struct nfp_flower_meta_tci *)mask;
712 key_layer = meta_tci->nfp_flow_key_layer;
713
714 if (key_layer & ~NFP_FLOWER_MERGE_FIELDS && !extra_fields)
715 return -EOPNOTSUPP;
716
717 merge->tci = meta_tci->tci;
718 mask += sizeof(struct nfp_flower_meta_tci);
719
720 if (key_layer & NFP_FLOWER_LAYER_EXT_META)
721 mask += sizeof(struct nfp_flower_ext_meta);
722
723 mask += sizeof(struct nfp_flower_in_port);
724
725 if (key_layer & NFP_FLOWER_LAYER_MAC) {
726 match_size = sizeof(struct nfp_flower_mac_mpls);
727 memcpy(&merge->l2, mask, match_size);
728 mask += match_size;
729 }
730
731 if (key_layer & NFP_FLOWER_LAYER_TP) {
732 match_size = sizeof(struct nfp_flower_tp_ports);
733 memcpy(&merge->l4, mask, match_size);
734 mask += match_size;
735 }
736
737 if (key_layer & NFP_FLOWER_LAYER_IPV4) {
738 match_size = sizeof(struct nfp_flower_ipv4);
739 memcpy(&merge->ipv4, mask, match_size);
740 }
741
742 if (key_layer & NFP_FLOWER_LAYER_IPV6) {
743 match_size = sizeof(struct nfp_flower_ipv6);
744 memcpy(&merge->ipv6, mask, match_size);
745 }
746
747 return 0;
748}
749
750static int
751nfp_flower_can_merge(struct nfp_fl_payload *sub_flow1,
752 struct nfp_fl_payload *sub_flow2)
753{
754
755
756
757
758
759 struct nfp_flower_merge_check sub_flow1_merge, sub_flow2_merge;
760 int err, act_out = 0;
761 u8 last_act_id = 0;
762
763 err = nfp_flower_populate_merge_match(sub_flow1, &sub_flow1_merge,
764 true);
765 if (err)
766 return err;
767
768 err = nfp_flower_populate_merge_match(sub_flow2, &sub_flow2_merge,
769 false);
770 if (err)
771 return err;
772
773 err = nfp_flower_update_merge_with_actions(sub_flow1, &sub_flow1_merge,
774 &last_act_id, &act_out);
775 if (err)
776 return err;
777
778
779 if (act_out != 1 || last_act_id != NFP_FL_ACTION_OPCODE_OUTPUT)
780 return -EOPNOTSUPP;
781
782
783
784
785 err = bitmap_andnot(sub_flow2_merge.vals, sub_flow2_merge.vals,
786 sub_flow1_merge.vals,
787 sizeof(struct nfp_flower_merge_check) * 8);
788 if (err)
789 return -EINVAL;
790
791 return 0;
792}
793
794static unsigned int
795nfp_flower_copy_pre_actions(char *act_dst, char *act_src, int len,
796 bool *tunnel_act)
797{
798 unsigned int act_off = 0, act_len;
799 struct nfp_fl_act_head *a;
800 u8 act_id = 0;
801
802 while (act_off < len) {
803 a = (struct nfp_fl_act_head *)&act_src[act_off];
804 act_len = a->len_lw << NFP_FL_LW_SIZ;
805 act_id = a->jump_id;
806
807 switch (act_id) {
808 case NFP_FL_ACTION_OPCODE_PRE_TUNNEL:
809 if (tunnel_act)
810 *tunnel_act = true;
811 fallthrough;
812 case NFP_FL_ACTION_OPCODE_PRE_LAG:
813 memcpy(act_dst + act_off, act_src + act_off, act_len);
814 break;
815 default:
816 return act_off;
817 }
818
819 act_off += act_len;
820 }
821
822 return act_off;
823}
824
825static int
826nfp_fl_verify_post_tun_acts(char *acts, int len, struct nfp_fl_push_vlan **vlan)
827{
828 struct nfp_fl_act_head *a;
829 unsigned int act_off = 0;
830
831 while (act_off < len) {
832 a = (struct nfp_fl_act_head *)&acts[act_off];
833
834 if (a->jump_id == NFP_FL_ACTION_OPCODE_PUSH_VLAN && !act_off)
835 *vlan = (struct nfp_fl_push_vlan *)a;
836 else if (a->jump_id != NFP_FL_ACTION_OPCODE_OUTPUT)
837 return -EOPNOTSUPP;
838
839 act_off += a->len_lw << NFP_FL_LW_SIZ;
840 }
841
842
843 if (*vlan && act_off <= sizeof(struct nfp_fl_push_vlan))
844 return -EOPNOTSUPP;
845
846 return 0;
847}
848
849static int
850nfp_fl_push_vlan_after_tun(char *acts, int len, struct nfp_fl_push_vlan *vlan)
851{
852 struct nfp_fl_set_tun *tun;
853 struct nfp_fl_act_head *a;
854 unsigned int act_off = 0;
855
856 while (act_off < len) {
857 a = (struct nfp_fl_act_head *)&acts[act_off];
858
859 if (a->jump_id == NFP_FL_ACTION_OPCODE_SET_TUNNEL) {
860 tun = (struct nfp_fl_set_tun *)a;
861 tun->outer_vlan_tpid = vlan->vlan_tpid;
862 tun->outer_vlan_tci = vlan->vlan_tci;
863
864 return 0;
865 }
866
867 act_off += a->len_lw << NFP_FL_LW_SIZ;
868 }
869
870
871 return -EOPNOTSUPP;
872}
873
874static int
875nfp_flower_merge_action(struct nfp_fl_payload *sub_flow1,
876 struct nfp_fl_payload *sub_flow2,
877 struct nfp_fl_payload *merge_flow)
878{
879 unsigned int sub1_act_len, sub2_act_len, pre_off1, pre_off2;
880 struct nfp_fl_push_vlan *post_tun_push_vlan = NULL;
881 bool tunnel_act = false;
882 char *merge_act;
883 int err;
884
885
886 sub1_act_len = sub_flow1->meta.act_len - sizeof(struct nfp_fl_output);
887 sub2_act_len = sub_flow2->meta.act_len;
888
889 if (!sub2_act_len)
890 return -EINVAL;
891
892 if (sub1_act_len + sub2_act_len > NFP_FL_MAX_A_SIZ)
893 return -EINVAL;
894
895
896 if (sub1_act_len)
897 merge_flow->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL);
898 else
899 merge_flow->meta.shortcut = sub_flow2->meta.shortcut;
900
901 merge_flow->meta.act_len = sub1_act_len + sub2_act_len;
902 merge_act = merge_flow->action_data;
903
904
905 pre_off1 = nfp_flower_copy_pre_actions(merge_act,
906 sub_flow1->action_data,
907 sub1_act_len, &tunnel_act);
908 merge_act += pre_off1;
909 sub1_act_len -= pre_off1;
910 pre_off2 = nfp_flower_copy_pre_actions(merge_act,
911 sub_flow2->action_data,
912 sub2_act_len, NULL);
913 merge_act += pre_off2;
914 sub2_act_len -= pre_off2;
915
916
917
918
919
920 if (tunnel_act) {
921 char *post_tun_acts = &sub_flow2->action_data[pre_off2];
922
923 err = nfp_fl_verify_post_tun_acts(post_tun_acts, sub2_act_len,
924 &post_tun_push_vlan);
925 if (err)
926 return err;
927
928 if (post_tun_push_vlan) {
929 pre_off2 += sizeof(*post_tun_push_vlan);
930 sub2_act_len -= sizeof(*post_tun_push_vlan);
931 }
932 }
933
934
935 memcpy(merge_act, sub_flow1->action_data + pre_off1, sub1_act_len);
936
937 if (post_tun_push_vlan) {
938
939 err = nfp_fl_push_vlan_after_tun(merge_act, sub1_act_len,
940 post_tun_push_vlan);
941 if (err)
942 return err;
943
944 merge_flow->meta.act_len -= sizeof(*post_tun_push_vlan);
945 }
946
947 merge_act += sub1_act_len;
948 memcpy(merge_act, sub_flow2->action_data + pre_off2, sub2_act_len);
949
950 return 0;
951}
952
953
954static void nfp_flower_unlink_flow(struct nfp_fl_payload_link *link)
955{
956 list_del(&link->merge_flow.list);
957 list_del(&link->sub_flow.list);
958 kfree(link);
959}
960
961static void nfp_flower_unlink_flows(struct nfp_fl_payload *merge_flow,
962 struct nfp_fl_payload *sub_flow)
963{
964 struct nfp_fl_payload_link *link;
965
966 list_for_each_entry(link, &merge_flow->linked_flows, merge_flow.list)
967 if (link->sub_flow.flow == sub_flow) {
968 nfp_flower_unlink_flow(link);
969 return;
970 }
971}
972
973static int nfp_flower_link_flows(struct nfp_fl_payload *merge_flow,
974 struct nfp_fl_payload *sub_flow)
975{
976 struct nfp_fl_payload_link *link;
977
978 link = kmalloc(sizeof(*link), GFP_KERNEL);
979 if (!link)
980 return -ENOMEM;
981
982 link->merge_flow.flow = merge_flow;
983 list_add_tail(&link->merge_flow.list, &merge_flow->linked_flows);
984 link->sub_flow.flow = sub_flow;
985 list_add_tail(&link->sub_flow.list, &sub_flow->linked_flows);
986
987 return 0;
988}
989
990
991
992
993
994
995
996
997
998
999
1000
1001int nfp_flower_merge_offloaded_flows(struct nfp_app *app,
1002 struct nfp_fl_payload *sub_flow1,
1003 struct nfp_fl_payload *sub_flow2)
1004{
1005 struct nfp_flower_priv *priv = app->priv;
1006 struct nfp_fl_payload *merge_flow;
1007 struct nfp_fl_key_ls merge_key_ls;
1008 struct nfp_merge_info *merge_info;
1009 u64 parent_ctx = 0;
1010 int err;
1011
1012 ASSERT_RTNL();
1013
1014 if (sub_flow1 == sub_flow2 ||
1015 nfp_flower_is_merge_flow(sub_flow1) ||
1016 nfp_flower_is_merge_flow(sub_flow2))
1017 return -EINVAL;
1018
1019
1020 parent_ctx = (u64)(be32_to_cpu(sub_flow1->meta.host_ctx_id)) << 32;
1021 parent_ctx |= (u64)(be32_to_cpu(sub_flow2->meta.host_ctx_id));
1022 if (rhashtable_lookup_fast(&priv->merge_table,
1023 &parent_ctx, merge_table_params)) {
1024 nfp_flower_cmsg_warn(app, "The two flows are already merged.\n");
1025 return 0;
1026 }
1027
1028 err = nfp_flower_can_merge(sub_flow1, sub_flow2);
1029 if (err)
1030 return err;
1031
1032 merge_key_ls.key_size = sub_flow1->meta.key_len;
1033
1034 merge_flow = nfp_flower_allocate_new(&merge_key_ls);
1035 if (!merge_flow)
1036 return -ENOMEM;
1037
1038 merge_flow->tc_flower_cookie = (unsigned long)merge_flow;
1039 merge_flow->ingress_dev = sub_flow1->ingress_dev;
1040
1041 memcpy(merge_flow->unmasked_data, sub_flow1->unmasked_data,
1042 sub_flow1->meta.key_len);
1043 memcpy(merge_flow->mask_data, sub_flow1->mask_data,
1044 sub_flow1->meta.mask_len);
1045
1046 err = nfp_flower_merge_action(sub_flow1, sub_flow2, merge_flow);
1047 if (err)
1048 goto err_destroy_merge_flow;
1049
1050 err = nfp_flower_link_flows(merge_flow, sub_flow1);
1051 if (err)
1052 goto err_destroy_merge_flow;
1053
1054 err = nfp_flower_link_flows(merge_flow, sub_flow2);
1055 if (err)
1056 goto err_unlink_sub_flow1;
1057
1058 err = nfp_compile_flow_metadata(app, merge_flow->tc_flower_cookie, merge_flow,
1059 merge_flow->ingress_dev, NULL);
1060 if (err)
1061 goto err_unlink_sub_flow2;
1062
1063 err = rhashtable_insert_fast(&priv->flow_table, &merge_flow->fl_node,
1064 nfp_flower_table_params);
1065 if (err)
1066 goto err_release_metadata;
1067
1068 merge_info = kmalloc(sizeof(*merge_info), GFP_KERNEL);
1069 if (!merge_info) {
1070 err = -ENOMEM;
1071 goto err_remove_rhash;
1072 }
1073 merge_info->parent_ctx = parent_ctx;
1074 err = rhashtable_insert_fast(&priv->merge_table, &merge_info->ht_node,
1075 merge_table_params);
1076 if (err)
1077 goto err_destroy_merge_info;
1078
1079 err = nfp_flower_xmit_flow(app, merge_flow,
1080 NFP_FLOWER_CMSG_TYPE_FLOW_MOD);
1081 if (err)
1082 goto err_remove_merge_info;
1083
1084 merge_flow->in_hw = true;
1085 sub_flow1->in_hw = false;
1086
1087 return 0;
1088
1089err_remove_merge_info:
1090 WARN_ON_ONCE(rhashtable_remove_fast(&priv->merge_table,
1091 &merge_info->ht_node,
1092 merge_table_params));
1093err_destroy_merge_info:
1094 kfree(merge_info);
1095err_remove_rhash:
1096 WARN_ON_ONCE(rhashtable_remove_fast(&priv->flow_table,
1097 &merge_flow->fl_node,
1098 nfp_flower_table_params));
1099err_release_metadata:
1100 nfp_modify_flow_metadata(app, merge_flow);
1101err_unlink_sub_flow2:
1102 nfp_flower_unlink_flows(merge_flow, sub_flow2);
1103err_unlink_sub_flow1:
1104 nfp_flower_unlink_flows(merge_flow, sub_flow1);
1105err_destroy_merge_flow:
1106 kfree(merge_flow->action_data);
1107 kfree(merge_flow->mask_data);
1108 kfree(merge_flow->unmasked_data);
1109 kfree(merge_flow);
1110 return err;
1111}
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124static int
1125nfp_flower_validate_pre_tun_rule(struct nfp_app *app,
1126 struct nfp_fl_payload *flow,
1127 struct nfp_fl_key_ls *key_ls,
1128 struct netlink_ext_ack *extack)
1129{
1130 struct nfp_flower_priv *priv = app->priv;
1131 struct nfp_flower_meta_tci *meta_tci;
1132 struct nfp_flower_mac_mpls *mac;
1133 u8 *ext = flow->unmasked_data;
1134 struct nfp_fl_act_head *act;
1135 u8 *mask = flow->mask_data;
1136 bool vlan = false;
1137 int act_offset;
1138 u8 key_layer;
1139
1140 meta_tci = (struct nfp_flower_meta_tci *)flow->unmasked_data;
1141 key_layer = key_ls->key_layer;
1142 if (!(priv->flower_ext_feats & NFP_FL_FEATS_VLAN_QINQ)) {
1143 if (meta_tci->tci & cpu_to_be16(NFP_FLOWER_MASK_VLAN_PRESENT)) {
1144 u16 vlan_tci = be16_to_cpu(meta_tci->tci);
1145
1146 vlan_tci &= ~NFP_FLOWER_MASK_VLAN_PRESENT;
1147 flow->pre_tun_rule.vlan_tci = cpu_to_be16(vlan_tci);
1148 vlan = true;
1149 } else {
1150 flow->pre_tun_rule.vlan_tci = cpu_to_be16(0xffff);
1151 }
1152 }
1153
1154 if (key_layer & ~NFP_FLOWER_PRE_TUN_RULE_FIELDS) {
1155 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: too many match fields");
1156 return -EOPNOTSUPP;
1157 } else if (key_ls->key_layer_two & ~NFP_FLOWER_LAYER2_QINQ) {
1158 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: non-vlan in extended match fields");
1159 return -EOPNOTSUPP;
1160 }
1161
1162 if (!(key_layer & NFP_FLOWER_LAYER_MAC)) {
1163 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: MAC fields match required");
1164 return -EOPNOTSUPP;
1165 }
1166
1167 if (!(key_layer & NFP_FLOWER_LAYER_IPV4) &&
1168 !(key_layer & NFP_FLOWER_LAYER_IPV6)) {
1169 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: match on ipv4/ipv6 eth_type must be present");
1170 return -EOPNOTSUPP;
1171 }
1172
1173
1174 mask += sizeof(struct nfp_flower_meta_tci);
1175 ext += sizeof(struct nfp_flower_meta_tci);
1176 if (key_ls->key_layer_two) {
1177 mask += sizeof(struct nfp_flower_ext_meta);
1178 ext += sizeof(struct nfp_flower_ext_meta);
1179 }
1180 mask += sizeof(struct nfp_flower_in_port);
1181 ext += sizeof(struct nfp_flower_in_port);
1182
1183
1184 mac = (struct nfp_flower_mac_mpls *)ext;
1185 if (memcmp(&mac->mac_dst[0], flow->pre_tun_rule.dev->dev_addr, 6)) {
1186 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: dest MAC must match output dev MAC");
1187 return -EOPNOTSUPP;
1188 }
1189
1190
1191 mac = (struct nfp_flower_mac_mpls *)mask;
1192 if (!is_broadcast_ether_addr(&mac->mac_dst[0])) {
1193 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: dest MAC field must not be masked");
1194 return -EOPNOTSUPP;
1195 }
1196
1197 if (mac->mpls_lse) {
1198 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: MPLS not supported");
1199 return -EOPNOTSUPP;
1200 }
1201
1202 mask += sizeof(struct nfp_flower_mac_mpls);
1203 ext += sizeof(struct nfp_flower_mac_mpls);
1204 if (key_layer & NFP_FLOWER_LAYER_IPV4 ||
1205 key_layer & NFP_FLOWER_LAYER_IPV6) {
1206
1207 int ip_flags = offsetof(struct nfp_flower_ipv4, ip_ext.flags);
1208 int ip_proto = offsetof(struct nfp_flower_ipv4, ip_ext.proto);
1209 int size;
1210 int i;
1211
1212 size = key_layer & NFP_FLOWER_LAYER_IPV4 ?
1213 sizeof(struct nfp_flower_ipv4) :
1214 sizeof(struct nfp_flower_ipv6);
1215
1216
1217
1218 for (i = 0; i < size; i++)
1219 if (mask[i] && i != ip_flags && i != ip_proto) {
1220 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: only flags and proto can be matched in ip header");
1221 return -EOPNOTSUPP;
1222 }
1223 ext += size;
1224 mask += size;
1225 }
1226
1227 if ((priv->flower_ext_feats & NFP_FL_FEATS_VLAN_QINQ)) {
1228 if (key_ls->key_layer_two & NFP_FLOWER_LAYER2_QINQ) {
1229 struct nfp_flower_vlan *vlan_tags;
1230 u16 vlan_tci;
1231
1232 vlan_tags = (struct nfp_flower_vlan *)ext;
1233
1234 vlan_tci = be16_to_cpu(vlan_tags->outer_tci);
1235
1236 vlan_tci &= ~NFP_FLOWER_MASK_VLAN_PRESENT;
1237 flow->pre_tun_rule.vlan_tci = cpu_to_be16(vlan_tci);
1238 vlan = true;
1239 } else {
1240 flow->pre_tun_rule.vlan_tci = cpu_to_be16(0xffff);
1241 }
1242 }
1243
1244
1245 act_offset = 0;
1246 act = (struct nfp_fl_act_head *)&flow->action_data[act_offset];
1247 if (vlan) {
1248 if (act->jump_id != NFP_FL_ACTION_OPCODE_POP_VLAN) {
1249 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: match on VLAN must have VLAN pop as first action");
1250 return -EOPNOTSUPP;
1251 }
1252
1253 act_offset += act->len_lw << NFP_FL_LW_SIZ;
1254 act = (struct nfp_fl_act_head *)&flow->action_data[act_offset];
1255 }
1256
1257 if (act->jump_id != NFP_FL_ACTION_OPCODE_OUTPUT) {
1258 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: non egress action detected where egress was expected");
1259 return -EOPNOTSUPP;
1260 }
1261
1262 act_offset += act->len_lw << NFP_FL_LW_SIZ;
1263
1264
1265 if (act_offset != flow->meta.act_len) {
1266 NL_SET_ERR_MSG_MOD(extack, "unsupported pre-tunnel rule: egress is not the last action");
1267 return -EOPNOTSUPP;
1268 }
1269
1270 return 0;
1271}
1272
1273static bool offload_pre_check(struct flow_cls_offload *flow)
1274{
1275 struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
1276 struct flow_dissector *dissector = rule->match.dissector;
1277
1278 if (dissector->used_keys & BIT(FLOW_DISSECTOR_KEY_CT))
1279 return false;
1280
1281 if (flow->common.chain_index)
1282 return false;
1283
1284 return true;
1285}
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297static int
1298nfp_flower_add_offload(struct nfp_app *app, struct net_device *netdev,
1299 struct flow_cls_offload *flow)
1300{
1301 struct flow_rule *rule = flow_cls_offload_flow_rule(flow);
1302 enum nfp_flower_tun_type tun_type = NFP_FL_TUNNEL_NONE;
1303 struct nfp_flower_priv *priv = app->priv;
1304 struct netlink_ext_ack *extack = NULL;
1305 struct nfp_fl_payload *flow_pay;
1306 struct nfp_fl_key_ls *key_layer;
1307 struct nfp_port *port = NULL;
1308 int err;
1309
1310 extack = flow->common.extack;
1311 if (nfp_netdev_is_nfp_repr(netdev))
1312 port = nfp_port_from_netdev(netdev);
1313
1314 if (is_pre_ct_flow(flow))
1315 return nfp_fl_ct_handle_pre_ct(priv, netdev, flow, extack);
1316
1317 if (is_post_ct_flow(flow))
1318 return nfp_fl_ct_handle_post_ct(priv, netdev, flow, extack);
1319
1320 if (!offload_pre_check(flow))
1321 return -EOPNOTSUPP;
1322
1323 key_layer = kmalloc(sizeof(*key_layer), GFP_KERNEL);
1324 if (!key_layer)
1325 return -ENOMEM;
1326
1327 err = nfp_flower_calculate_key_layers(app, netdev, key_layer, rule,
1328 &tun_type, extack);
1329 if (err)
1330 goto err_free_key_ls;
1331
1332 flow_pay = nfp_flower_allocate_new(key_layer);
1333 if (!flow_pay) {
1334 err = -ENOMEM;
1335 goto err_free_key_ls;
1336 }
1337
1338 err = nfp_flower_compile_flow_match(app, rule, key_layer, netdev,
1339 flow_pay, tun_type, extack);
1340 if (err)
1341 goto err_destroy_flow;
1342
1343 err = nfp_flower_compile_action(app, rule, netdev, flow_pay, extack);
1344 if (err)
1345 goto err_destroy_flow;
1346
1347 if (flow_pay->pre_tun_rule.dev) {
1348 err = nfp_flower_validate_pre_tun_rule(app, flow_pay, key_layer, extack);
1349 if (err)
1350 goto err_destroy_flow;
1351 }
1352
1353 err = nfp_compile_flow_metadata(app, flow->cookie, flow_pay, netdev, extack);
1354 if (err)
1355 goto err_destroy_flow;
1356
1357 flow_pay->tc_flower_cookie = flow->cookie;
1358 err = rhashtable_insert_fast(&priv->flow_table, &flow_pay->fl_node,
1359 nfp_flower_table_params);
1360 if (err) {
1361 NL_SET_ERR_MSG_MOD(extack, "invalid entry: cannot insert flow into tables for offloads");
1362 goto err_release_metadata;
1363 }
1364
1365 if (flow_pay->pre_tun_rule.dev)
1366 err = nfp_flower_xmit_pre_tun_flow(app, flow_pay);
1367 else
1368 err = nfp_flower_xmit_flow(app, flow_pay,
1369 NFP_FLOWER_CMSG_TYPE_FLOW_ADD);
1370 if (err)
1371 goto err_remove_rhash;
1372
1373 if (port)
1374 port->tc_offload_cnt++;
1375
1376 flow_pay->in_hw = true;
1377
1378
1379 kfree(key_layer);
1380
1381 return 0;
1382
1383err_remove_rhash:
1384 WARN_ON_ONCE(rhashtable_remove_fast(&priv->flow_table,
1385 &flow_pay->fl_node,
1386 nfp_flower_table_params));
1387err_release_metadata:
1388 nfp_modify_flow_metadata(app, flow_pay);
1389err_destroy_flow:
1390 if (flow_pay->nfp_tun_ipv6)
1391 nfp_tunnel_put_ipv6_off(app, flow_pay->nfp_tun_ipv6);
1392 kfree(flow_pay->action_data);
1393 kfree(flow_pay->mask_data);
1394 kfree(flow_pay->unmasked_data);
1395 kfree(flow_pay);
1396err_free_key_ls:
1397 kfree(key_layer);
1398 return err;
1399}
1400
1401static void
1402nfp_flower_remove_merge_flow(struct nfp_app *app,
1403 struct nfp_fl_payload *del_sub_flow,
1404 struct nfp_fl_payload *merge_flow)
1405{
1406 struct nfp_flower_priv *priv = app->priv;
1407 struct nfp_fl_payload_link *link, *temp;
1408 struct nfp_merge_info *merge_info;
1409 struct nfp_fl_payload *origin;
1410 u64 parent_ctx = 0;
1411 bool mod = false;
1412 int err;
1413
1414 link = list_first_entry(&merge_flow->linked_flows,
1415 struct nfp_fl_payload_link, merge_flow.list);
1416 origin = link->sub_flow.flow;
1417
1418
1419 if (origin != del_sub_flow)
1420 mod = true;
1421
1422 err = nfp_modify_flow_metadata(app, merge_flow);
1423 if (err) {
1424 nfp_flower_cmsg_warn(app, "Metadata fail for merge flow delete.\n");
1425 goto err_free_links;
1426 }
1427
1428 if (!mod) {
1429 err = nfp_flower_xmit_flow(app, merge_flow,
1430 NFP_FLOWER_CMSG_TYPE_FLOW_DEL);
1431 if (err) {
1432 nfp_flower_cmsg_warn(app, "Failed to delete merged flow.\n");
1433 goto err_free_links;
1434 }
1435 } else {
1436 __nfp_modify_flow_metadata(priv, origin);
1437 err = nfp_flower_xmit_flow(app, origin,
1438 NFP_FLOWER_CMSG_TYPE_FLOW_MOD);
1439 if (err)
1440 nfp_flower_cmsg_warn(app, "Failed to revert merge flow.\n");
1441 origin->in_hw = true;
1442 }
1443
1444err_free_links:
1445
1446 list_for_each_entry_safe(link, temp, &merge_flow->linked_flows,
1447 merge_flow.list) {
1448 u32 ctx_id = be32_to_cpu(link->sub_flow.flow->meta.host_ctx_id);
1449
1450 parent_ctx = (parent_ctx << 32) | (u64)(ctx_id);
1451 nfp_flower_unlink_flow(link);
1452 }
1453
1454 merge_info = rhashtable_lookup_fast(&priv->merge_table,
1455 &parent_ctx,
1456 merge_table_params);
1457 if (merge_info) {
1458 WARN_ON_ONCE(rhashtable_remove_fast(&priv->merge_table,
1459 &merge_info->ht_node,
1460 merge_table_params));
1461 kfree(merge_info);
1462 }
1463
1464 kfree(merge_flow->action_data);
1465 kfree(merge_flow->mask_data);
1466 kfree(merge_flow->unmasked_data);
1467 WARN_ON_ONCE(rhashtable_remove_fast(&priv->flow_table,
1468 &merge_flow->fl_node,
1469 nfp_flower_table_params));
1470 kfree_rcu(merge_flow, rcu);
1471}
1472
1473void
1474nfp_flower_del_linked_merge_flows(struct nfp_app *app,
1475 struct nfp_fl_payload *sub_flow)
1476{
1477 struct nfp_fl_payload_link *link, *temp;
1478
1479
1480 list_for_each_entry_safe(link, temp, &sub_flow->linked_flows,
1481 sub_flow.list)
1482 nfp_flower_remove_merge_flow(app, sub_flow,
1483 link->merge_flow.flow);
1484}
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497static int
1498nfp_flower_del_offload(struct nfp_app *app, struct net_device *netdev,
1499 struct flow_cls_offload *flow)
1500{
1501 struct nfp_flower_priv *priv = app->priv;
1502 struct nfp_fl_ct_map_entry *ct_map_ent;
1503 struct netlink_ext_ack *extack = NULL;
1504 struct nfp_fl_payload *nfp_flow;
1505 struct nfp_port *port = NULL;
1506 int err;
1507
1508 extack = flow->common.extack;
1509 if (nfp_netdev_is_nfp_repr(netdev))
1510 port = nfp_port_from_netdev(netdev);
1511
1512
1513 ct_map_ent = rhashtable_lookup_fast(&priv->ct_map_table, &flow->cookie,
1514 nfp_ct_map_params);
1515 if (ct_map_ent) {
1516 err = nfp_fl_ct_del_flow(ct_map_ent);
1517 return err;
1518 }
1519
1520 nfp_flow = nfp_flower_search_fl_table(app, flow->cookie, netdev);
1521 if (!nfp_flow) {
1522 NL_SET_ERR_MSG_MOD(extack, "invalid entry: cannot remove flow that does not exist");
1523 return -ENOENT;
1524 }
1525
1526 err = nfp_modify_flow_metadata(app, nfp_flow);
1527 if (err)
1528 goto err_free_merge_flow;
1529
1530 if (nfp_flow->nfp_tun_ipv4_addr)
1531 nfp_tunnel_del_ipv4_off(app, nfp_flow->nfp_tun_ipv4_addr);
1532
1533 if (nfp_flow->nfp_tun_ipv6)
1534 nfp_tunnel_put_ipv6_off(app, nfp_flow->nfp_tun_ipv6);
1535
1536 if (!nfp_flow->in_hw) {
1537 err = 0;
1538 goto err_free_merge_flow;
1539 }
1540
1541 if (nfp_flow->pre_tun_rule.dev)
1542 err = nfp_flower_xmit_pre_tun_del_flow(app, nfp_flow);
1543 else
1544 err = nfp_flower_xmit_flow(app, nfp_flow,
1545 NFP_FLOWER_CMSG_TYPE_FLOW_DEL);
1546
1547
1548err_free_merge_flow:
1549 nfp_flower_del_linked_merge_flows(app, nfp_flow);
1550 if (port)
1551 port->tc_offload_cnt--;
1552 kfree(nfp_flow->action_data);
1553 kfree(nfp_flow->mask_data);
1554 kfree(nfp_flow->unmasked_data);
1555 WARN_ON_ONCE(rhashtable_remove_fast(&priv->flow_table,
1556 &nfp_flow->fl_node,
1557 nfp_flower_table_params));
1558 kfree_rcu(nfp_flow, rcu);
1559 return err;
1560}
1561
1562static void
1563__nfp_flower_update_merge_stats(struct nfp_app *app,
1564 struct nfp_fl_payload *merge_flow)
1565{
1566 struct nfp_flower_priv *priv = app->priv;
1567 struct nfp_fl_payload_link *link;
1568 struct nfp_fl_payload *sub_flow;
1569 u64 pkts, bytes, used;
1570 u32 ctx_id;
1571
1572 ctx_id = be32_to_cpu(merge_flow->meta.host_ctx_id);
1573 pkts = priv->stats[ctx_id].pkts;
1574
1575 if (!pkts)
1576 return;
1577 bytes = priv->stats[ctx_id].bytes;
1578 used = priv->stats[ctx_id].used;
1579
1580
1581 priv->stats[ctx_id].pkts = 0;
1582 priv->stats[ctx_id].bytes = 0;
1583
1584
1585
1586
1587
1588 list_for_each_entry(link, &merge_flow->linked_flows, merge_flow.list) {
1589 sub_flow = link->sub_flow.flow;
1590 ctx_id = be32_to_cpu(sub_flow->meta.host_ctx_id);
1591 priv->stats[ctx_id].pkts += pkts;
1592 priv->stats[ctx_id].bytes += bytes;
1593 priv->stats[ctx_id].used = max_t(u64, used,
1594 priv->stats[ctx_id].used);
1595 }
1596}
1597
1598void
1599nfp_flower_update_merge_stats(struct nfp_app *app,
1600 struct nfp_fl_payload *sub_flow)
1601{
1602 struct nfp_fl_payload_link *link;
1603
1604
1605 list_for_each_entry(link, &sub_flow->linked_flows, sub_flow.list)
1606 __nfp_flower_update_merge_stats(app, link->merge_flow.flow);
1607}
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620static int
1621nfp_flower_get_stats(struct nfp_app *app, struct net_device *netdev,
1622 struct flow_cls_offload *flow)
1623{
1624 struct nfp_flower_priv *priv = app->priv;
1625 struct nfp_fl_ct_map_entry *ct_map_ent;
1626 struct netlink_ext_ack *extack = NULL;
1627 struct nfp_fl_payload *nfp_flow;
1628 u32 ctx_id;
1629
1630
1631 ct_map_ent = rhashtable_lookup_fast(&priv->ct_map_table, &flow->cookie,
1632 nfp_ct_map_params);
1633 if (ct_map_ent)
1634 return nfp_fl_ct_stats(flow, ct_map_ent);
1635
1636 extack = flow->common.extack;
1637 nfp_flow = nfp_flower_search_fl_table(app, flow->cookie, netdev);
1638 if (!nfp_flow) {
1639 NL_SET_ERR_MSG_MOD(extack, "invalid entry: cannot dump stats for flow that does not exist");
1640 return -EINVAL;
1641 }
1642
1643 ctx_id = be32_to_cpu(nfp_flow->meta.host_ctx_id);
1644
1645 spin_lock_bh(&priv->stats_lock);
1646
1647 if (!list_empty(&nfp_flow->linked_flows))
1648 nfp_flower_update_merge_stats(app, nfp_flow);
1649
1650 flow_stats_update(&flow->stats, priv->stats[ctx_id].bytes,
1651 priv->stats[ctx_id].pkts, 0, priv->stats[ctx_id].used,
1652 FLOW_ACTION_HW_STATS_DELAYED);
1653
1654 priv->stats[ctx_id].pkts = 0;
1655 priv->stats[ctx_id].bytes = 0;
1656 spin_unlock_bh(&priv->stats_lock);
1657
1658 return 0;
1659}
1660
1661static int
1662nfp_flower_repr_offload(struct nfp_app *app, struct net_device *netdev,
1663 struct flow_cls_offload *flower)
1664{
1665 if (!eth_proto_is_802_3(flower->common.protocol))
1666 return -EOPNOTSUPP;
1667
1668 switch (flower->command) {
1669 case FLOW_CLS_REPLACE:
1670 return nfp_flower_add_offload(app, netdev, flower);
1671 case FLOW_CLS_DESTROY:
1672 return nfp_flower_del_offload(app, netdev, flower);
1673 case FLOW_CLS_STATS:
1674 return nfp_flower_get_stats(app, netdev, flower);
1675 default:
1676 return -EOPNOTSUPP;
1677 }
1678}
1679
1680static int nfp_flower_setup_tc_block_cb(enum tc_setup_type type,
1681 void *type_data, void *cb_priv)
1682{
1683 struct flow_cls_common_offload *common = type_data;
1684 struct nfp_repr *repr = cb_priv;
1685
1686 if (!tc_can_offload_extack(repr->netdev, common->extack))
1687 return -EOPNOTSUPP;
1688
1689 switch (type) {
1690 case TC_SETUP_CLSFLOWER:
1691 return nfp_flower_repr_offload(repr->app, repr->netdev,
1692 type_data);
1693 case TC_SETUP_CLSMATCHALL:
1694 return nfp_flower_setup_qos_offload(repr->app, repr->netdev,
1695 type_data);
1696 default:
1697 return -EOPNOTSUPP;
1698 }
1699}
1700
1701static LIST_HEAD(nfp_block_cb_list);
1702
1703static int nfp_flower_setup_tc_block(struct net_device *netdev,
1704 struct flow_block_offload *f)
1705{
1706 struct nfp_repr *repr = netdev_priv(netdev);
1707 struct nfp_flower_repr_priv *repr_priv;
1708 struct flow_block_cb *block_cb;
1709
1710 if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
1711 return -EOPNOTSUPP;
1712
1713 repr_priv = repr->app_priv;
1714 repr_priv->block_shared = f->block_shared;
1715 f->driver_block_list = &nfp_block_cb_list;
1716
1717 switch (f->command) {
1718 case FLOW_BLOCK_BIND:
1719 if (flow_block_cb_is_busy(nfp_flower_setup_tc_block_cb, repr,
1720 &nfp_block_cb_list))
1721 return -EBUSY;
1722
1723 block_cb = flow_block_cb_alloc(nfp_flower_setup_tc_block_cb,
1724 repr, repr, NULL);
1725 if (IS_ERR(block_cb))
1726 return PTR_ERR(block_cb);
1727
1728 flow_block_cb_add(block_cb, f);
1729 list_add_tail(&block_cb->driver_list, &nfp_block_cb_list);
1730 return 0;
1731 case FLOW_BLOCK_UNBIND:
1732 block_cb = flow_block_cb_lookup(f->block,
1733 nfp_flower_setup_tc_block_cb,
1734 repr);
1735 if (!block_cb)
1736 return -ENOENT;
1737
1738 flow_block_cb_remove(block_cb, f);
1739 list_del(&block_cb->driver_list);
1740 return 0;
1741 default:
1742 return -EOPNOTSUPP;
1743 }
1744}
1745
1746int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev,
1747 enum tc_setup_type type, void *type_data)
1748{
1749 switch (type) {
1750 case TC_SETUP_BLOCK:
1751 return nfp_flower_setup_tc_block(netdev, type_data);
1752 default:
1753 return -EOPNOTSUPP;
1754 }
1755}
1756
1757struct nfp_flower_indr_block_cb_priv {
1758 struct net_device *netdev;
1759 struct nfp_app *app;
1760 struct list_head list;
1761};
1762
1763static struct nfp_flower_indr_block_cb_priv *
1764nfp_flower_indr_block_cb_priv_lookup(struct nfp_app *app,
1765 struct net_device *netdev)
1766{
1767 struct nfp_flower_indr_block_cb_priv *cb_priv;
1768 struct nfp_flower_priv *priv = app->priv;
1769
1770 list_for_each_entry(cb_priv, &priv->indr_block_cb_priv, list)
1771 if (cb_priv->netdev == netdev)
1772 return cb_priv;
1773
1774 return NULL;
1775}
1776
1777static int nfp_flower_setup_indr_block_cb(enum tc_setup_type type,
1778 void *type_data, void *cb_priv)
1779{
1780 struct nfp_flower_indr_block_cb_priv *priv = cb_priv;
1781
1782 switch (type) {
1783 case TC_SETUP_CLSFLOWER:
1784 return nfp_flower_repr_offload(priv->app, priv->netdev,
1785 type_data);
1786 default:
1787 return -EOPNOTSUPP;
1788 }
1789}
1790
1791void nfp_flower_setup_indr_tc_release(void *cb_priv)
1792{
1793 struct nfp_flower_indr_block_cb_priv *priv = cb_priv;
1794
1795 list_del(&priv->list);
1796 kfree(priv);
1797}
1798
1799static int
1800nfp_flower_setup_indr_tc_block(struct net_device *netdev, struct Qdisc *sch, struct nfp_app *app,
1801 struct flow_block_offload *f, void *data,
1802 void (*cleanup)(struct flow_block_cb *block_cb))
1803{
1804 struct nfp_flower_indr_block_cb_priv *cb_priv;
1805 struct nfp_flower_priv *priv = app->priv;
1806 struct flow_block_cb *block_cb;
1807
1808 if ((f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS &&
1809 !nfp_flower_internal_port_can_offload(app, netdev)) ||
1810 (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS &&
1811 nfp_flower_internal_port_can_offload(app, netdev)))
1812 return -EOPNOTSUPP;
1813
1814 switch (f->command) {
1815 case FLOW_BLOCK_BIND:
1816 cb_priv = nfp_flower_indr_block_cb_priv_lookup(app, netdev);
1817 if (cb_priv &&
1818 flow_block_cb_is_busy(nfp_flower_setup_indr_block_cb,
1819 cb_priv,
1820 &nfp_block_cb_list))
1821 return -EBUSY;
1822
1823 cb_priv = kmalloc(sizeof(*cb_priv), GFP_KERNEL);
1824 if (!cb_priv)
1825 return -ENOMEM;
1826
1827 cb_priv->netdev = netdev;
1828 cb_priv->app = app;
1829 list_add(&cb_priv->list, &priv->indr_block_cb_priv);
1830
1831 block_cb = flow_indr_block_cb_alloc(nfp_flower_setup_indr_block_cb,
1832 cb_priv, cb_priv,
1833 nfp_flower_setup_indr_tc_release,
1834 f, netdev, sch, data, app, cleanup);
1835 if (IS_ERR(block_cb)) {
1836 list_del(&cb_priv->list);
1837 kfree(cb_priv);
1838 return PTR_ERR(block_cb);
1839 }
1840
1841 flow_block_cb_add(block_cb, f);
1842 list_add_tail(&block_cb->driver_list, &nfp_block_cb_list);
1843 return 0;
1844 case FLOW_BLOCK_UNBIND:
1845 cb_priv = nfp_flower_indr_block_cb_priv_lookup(app, netdev);
1846 if (!cb_priv)
1847 return -ENOENT;
1848
1849 block_cb = flow_block_cb_lookup(f->block,
1850 nfp_flower_setup_indr_block_cb,
1851 cb_priv);
1852 if (!block_cb)
1853 return -ENOENT;
1854
1855 flow_indr_block_cb_remove(block_cb, f);
1856 list_del(&block_cb->driver_list);
1857 return 0;
1858 default:
1859 return -EOPNOTSUPP;
1860 }
1861 return 0;
1862}
1863
1864int
1865nfp_flower_indr_setup_tc_cb(struct net_device *netdev, struct Qdisc *sch, void *cb_priv,
1866 enum tc_setup_type type, void *type_data,
1867 void *data,
1868 void (*cleanup)(struct flow_block_cb *block_cb))
1869{
1870 if (!nfp_fl_is_netdev_to_offload(netdev))
1871 return -EOPNOTSUPP;
1872
1873 switch (type) {
1874 case TC_SETUP_BLOCK:
1875 return nfp_flower_setup_indr_tc_block(netdev, sch, cb_priv,
1876 type_data, data, cleanup);
1877 default:
1878 return -EOPNOTSUPP;
1879 }
1880}
1881
