1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2/* Copyright (C) 2017-2018 Netronome Systems, Inc. */ 3 4#include <linux/bitfield.h> 5#include <linux/mpls.h> 6#include <net/pkt_cls.h> 7#include <net/tc_act/tc_csum.h> 8#include <net/tc_act/tc_gact.h> 9#include <net/tc_act/tc_mirred.h> 10#include <net/tc_act/tc_mpls.h> 11#include <net/tc_act/tc_pedit.h> 12#include <net/tc_act/tc_vlan.h> 13#include <net/tc_act/tc_tunnel_key.h> 14 15#include "cmsg.h" 16#include "main.h" 17#include "../nfp_net_repr.h" 18 19/* The kernel versions of TUNNEL_* are not ABI and therefore vulnerable 20 * to change. Such changes will break our FW ABI. 21 */ 22#define NFP_FL_TUNNEL_CSUM cpu_to_be16(0x01) 23#define NFP_FL_TUNNEL_KEY cpu_to_be16(0x04) 24#define NFP_FL_TUNNEL_GENEVE_OPT cpu_to_be16(0x0800) 25#define NFP_FL_SUPPORTED_TUNNEL_INFO_FLAGS (IP_TUNNEL_INFO_TX | \ 26 IP_TUNNEL_INFO_IPV6) 27#define NFP_FL_SUPPORTED_UDP_TUN_FLAGS (NFP_FL_TUNNEL_CSUM | \ 28 NFP_FL_TUNNEL_KEY | \ 29 NFP_FL_TUNNEL_GENEVE_OPT) 30 31static int 32nfp_fl_push_mpls(struct nfp_fl_push_mpls *push_mpls, 33 const struct flow_action_entry *act, 34 struct netlink_ext_ack *extack) 35{ 36 size_t act_size = sizeof(struct nfp_fl_push_mpls); 37 u32 mpls_lse = 0; 38 39 push_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_PUSH_MPLS; 40 push_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ; 41 42 /* BOS is optional in the TC action but required for offload. */ 43 if (act->mpls_push.bos != ACT_MPLS_BOS_NOT_SET) { 44 mpls_lse |= act->mpls_push.bos << MPLS_LS_S_SHIFT; 45 } else { 46 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: BOS field must explicitly be set for MPLS push"); 47 return -EOPNOTSUPP; 48 } 49 50 /* Leave MPLS TC as a default value of 0 if not explicitly set. */ 51 if (act->mpls_push.tc != ACT_MPLS_TC_NOT_SET) 52 mpls_lse |= act->mpls_push.tc << MPLS_LS_TC_SHIFT; 53 54 /* Proto, label and TTL are enforced and verified for MPLS push. */ 55 mpls_lse |= act->mpls_push.label << MPLS_LS_LABEL_SHIFT; 56 mpls_lse |= act->mpls_push.ttl << MPLS_LS_TTL_SHIFT; 57 push_mpls->ethtype = act->mpls_push.proto; 58 push_mpls->lse = cpu_to_be32(mpls_lse); 59 60 return 0; 61} 62 63static void 64nfp_fl_pop_mpls(struct nfp_fl_pop_mpls *pop_mpls, 65 const struct flow_action_entry *act) 66{ 67 size_t act_size = sizeof(struct nfp_fl_pop_mpls); 68 69 pop_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_POP_MPLS; 70 pop_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ; 71 pop_mpls->ethtype = act->mpls_pop.proto; 72} 73 74static void 75nfp_fl_set_mpls(struct nfp_fl_set_mpls *set_mpls, 76 const struct flow_action_entry *act) 77{ 78 size_t act_size = sizeof(struct nfp_fl_set_mpls); 79 u32 mpls_lse = 0, mpls_mask = 0; 80 81 set_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_SET_MPLS; 82 set_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ; 83 84 if (act->mpls_mangle.label != ACT_MPLS_LABEL_NOT_SET) { 85 mpls_lse |= act->mpls_mangle.label << MPLS_LS_LABEL_SHIFT; 86 mpls_mask |= MPLS_LS_LABEL_MASK; 87 } 88 if (act->mpls_mangle.tc != ACT_MPLS_TC_NOT_SET) { 89 mpls_lse |= act->mpls_mangle.tc << MPLS_LS_TC_SHIFT; 90 mpls_mask |= MPLS_LS_TC_MASK; 91 } 92 if (act->mpls_mangle.bos != ACT_MPLS_BOS_NOT_SET) { 93 mpls_lse |= act->mpls_mangle.bos << MPLS_LS_S_SHIFT; 94 mpls_mask |= MPLS_LS_S_MASK; 95 } 96 if (act->mpls_mangle.ttl) { 97 mpls_lse |= act->mpls_mangle.ttl << MPLS_LS_TTL_SHIFT; 98 mpls_mask |= MPLS_LS_TTL_MASK; 99 } 100 101 set_mpls->lse = cpu_to_be32(mpls_lse); 102 set_mpls->lse_mask = cpu_to_be32(mpls_mask); 103} 104 105static void nfp_fl_pop_vlan(struct nfp_fl_pop_vlan *pop_vlan) 106{ 107 size_t act_size = sizeof(struct nfp_fl_pop_vlan); 108 109 pop_vlan->head.jump_id = NFP_FL_ACTION_OPCODE_POP_VLAN; 110 pop_vlan->head.len_lw = act_size >> NFP_FL_LW_SIZ; 111 pop_vlan->reserved = 0; 112} 113 114static void 115nfp_fl_push_vlan(struct nfp_fl_push_vlan *push_vlan, 116 const struct flow_action_entry *act) 117{ 118 size_t act_size = sizeof(struct nfp_fl_push_vlan); 119 u16 tmp_push_vlan_tci; 120 121 push_vlan->head.jump_id = NFP_FL_ACTION_OPCODE_PUSH_VLAN; 122 push_vlan->head.len_lw = act_size >> NFP_FL_LW_SIZ; 123 push_vlan->reserved = 0; 124 push_vlan->vlan_tpid = act->vlan.proto; 125 126 tmp_push_vlan_tci = 127 FIELD_PREP(NFP_FL_PUSH_VLAN_PRIO, act->vlan.prio) | 128 FIELD_PREP(NFP_FL_PUSH_VLAN_VID, act->vlan.vid); 129 push_vlan->vlan_tci = cpu_to_be16(tmp_push_vlan_tci); 130} 131 132static int 133nfp_fl_pre_lag(struct nfp_app *app, const struct flow_action_entry *act, 134 struct nfp_fl_payload *nfp_flow, int act_len, 135 struct netlink_ext_ack *extack) 136{ 137 size_t act_size = sizeof(struct nfp_fl_pre_lag); 138 struct nfp_fl_pre_lag *pre_lag; 139 struct net_device *out_dev; 140 int err; 141 142 out_dev = act->dev; 143 if (!out_dev || !netif_is_lag_master(out_dev)) 144 return 0; 145 146 if (act_len + act_size > NFP_FL_MAX_A_SIZ) { 147 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at LAG action"); 148 return -EOPNOTSUPP; 149 } 150 151 /* Pre_lag action must be first on action list. 152 * If other actions already exist they need to be pushed forward. 153 */ 154 if (act_len) 155 memmove(nfp_flow->action_data + act_size, 156 nfp_flow->action_data, act_len); 157 158 pre_lag = (struct nfp_fl_pre_lag *)nfp_flow->action_data; 159 err = nfp_flower_lag_populate_pre_action(app, out_dev, pre_lag, extack); 160 if (err) 161 return err; 162 163 pre_lag->head.jump_id = NFP_FL_ACTION_OPCODE_PRE_LAG; 164 pre_lag->head.len_lw = act_size >> NFP_FL_LW_SIZ; 165 166 nfp_flow->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); 167 168 return act_size; 169} 170 171static int 172nfp_fl_output(struct nfp_app *app, struct nfp_fl_output *output, 173 const struct flow_action_entry *act, 174 struct nfp_fl_payload *nfp_flow, 175 bool last, struct net_device *in_dev, 176 enum nfp_flower_tun_type tun_type, int *tun_out_cnt, 177 bool pkt_host, struct netlink_ext_ack *extack) 178{ 179 size_t act_size = sizeof(struct nfp_fl_output); 180 struct nfp_flower_priv *priv = app->priv; 181 struct net_device *out_dev; 182 u16 tmp_flags; 183 184 output->head.jump_id = NFP_FL_ACTION_OPCODE_OUTPUT; 185 output->head.len_lw = act_size >> NFP_FL_LW_SIZ; 186 187 out_dev = act->dev; 188 if (!out_dev) { 189 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid egress interface for mirred action"); 190 return -EOPNOTSUPP; 191 } 192 193 tmp_flags = last ? NFP_FL_OUT_FLAGS_LAST : 0; 194 195 if (tun_type) { 196 /* Verify the egress netdev matches the tunnel type. */ 197 if (!nfp_fl_netdev_is_tunnel_type(out_dev, tun_type)) { 198 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: egress interface does not match the required tunnel type"); 199 return -EOPNOTSUPP; 200 } 201 202 if (*tun_out_cnt) { 203 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: cannot offload more than one tunnel mirred output per filter"); 204 return -EOPNOTSUPP; 205 } 206 (*tun_out_cnt)++; 207 208 output->flags = cpu_to_be16(tmp_flags | 209 NFP_FL_OUT_FLAGS_USE_TUN); 210 output->port = cpu_to_be32(NFP_FL_PORT_TYPE_TUN | tun_type); 211 } else if (netif_is_lag_master(out_dev) && 212 priv->flower_en_feats & NFP_FL_ENABLE_LAG) { 213 int gid; 214 215 output->flags = cpu_to_be16(tmp_flags); 216 gid = nfp_flower_lag_get_output_id(app, out_dev); 217 if (gid < 0) { 218 NL_SET_ERR_MSG_MOD(extack, "invalid entry: cannot find group id for LAG action"); 219 return gid; 220 } 221 output->port = cpu_to_be32(NFP_FL_LAG_OUT | gid); 222 } else if (nfp_flower_internal_port_can_offload(app, out_dev)) { 223 if (!(priv->flower_ext_feats & NFP_FL_FEATS_PRE_TUN_RULES) && 224 !(priv->flower_ext_feats & NFP_FL_FEATS_DECAP_V2)) { 225 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pre-tunnel rules not supported in loaded firmware"); 226 return -EOPNOTSUPP; 227 } 228 229 if (nfp_flow->pre_tun_rule.dev || !pkt_host) { 230 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pre-tunnel rules require single egress dev and ptype HOST action"); 231 return -EOPNOTSUPP; 232 } 233 234 nfp_flow->pre_tun_rule.dev = out_dev; 235 236 return 0; 237 } else { 238 /* Set action output parameters. */ 239 output->flags = cpu_to_be16(tmp_flags); 240 241 if (nfp_netdev_is_nfp_repr(in_dev)) { 242 /* Confirm ingress and egress are on same device. */ 243 if (!netdev_port_same_parent_id(in_dev, out_dev)) { 244 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: ingress and egress interfaces are on different devices"); 245 return -EOPNOTSUPP; 246 } 247 } 248 249 if (!nfp_netdev_is_nfp_repr(out_dev)) { 250 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: egress interface is not an nfp port"); 251 return -EOPNOTSUPP; 252 } 253 254 output->port = cpu_to_be32(nfp_repr_get_port_id(out_dev)); 255 if (!output->port) { 256 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid port id for egress interface"); 257 return -EOPNOTSUPP; 258 } 259 } 260 nfp_flow->meta.shortcut = output->port; 261 262 return 0; 263} 264 265static bool 266nfp_flower_tun_is_gre(struct flow_rule *rule, int start_idx) 267{ 268 struct flow_action_entry *act = rule->action.entries; 269 int num_act = rule->action.num_entries; 270 int act_idx; 271 272 /* Preparse action list for next mirred or redirect action */ 273 for (act_idx = start_idx + 1; act_idx < num_act; act_idx++) 274 if (act[act_idx].id == FLOW_ACTION_REDIRECT || 275 act[act_idx].id == FLOW_ACTION_MIRRED) 276 return netif_is_gretap(act[act_idx].dev) || 277 netif_is_ip6gretap(act[act_idx].dev); 278 279 return false; 280} 281 282static enum nfp_flower_tun_type 283nfp_fl_get_tun_from_act(struct nfp_app *app, 284 struct flow_rule *rule, 285 const struct flow_action_entry *act, int act_idx) 286{ 287 const struct ip_tunnel_info *tun = act->tunnel; 288 struct nfp_flower_priv *priv = app->priv; 289 290 /* Determine the tunnel type based on the egress netdev 291 * in the mirred action for tunnels without l4. 292 */ 293 if (nfp_flower_tun_is_gre(rule, act_idx)) 294 return NFP_FL_TUNNEL_GRE; 295 296 switch (tun->key.tp_dst) { 297 case htons(IANA_VXLAN_UDP_PORT): 298 return NFP_FL_TUNNEL_VXLAN; 299 case htons(GENEVE_UDP_PORT): 300 if (priv->flower_ext_feats & NFP_FL_FEATS_GENEVE) 301 return NFP_FL_TUNNEL_GENEVE; 302 fallthrough; 303 default: 304 return NFP_FL_TUNNEL_NONE; 305 } 306} 307 308static struct nfp_fl_pre_tunnel *nfp_fl_pre_tunnel(char *act_data, int act_len) 309{ 310 size_t act_size = sizeof(struct nfp_fl_pre_tunnel); 311 struct nfp_fl_pre_tunnel *pre_tun_act; 312 313 /* Pre_tunnel action must be first on action list. 314 * If other actions already exist they need to be pushed forward. 315 */ 316 if (act_len) 317 memmove(act_data + act_size, act_data, act_len); 318 319 pre_tun_act = (struct nfp_fl_pre_tunnel *)act_data; 320 321 memset(pre_tun_act, 0, act_size); 322 323 pre_tun_act->head.jump_id = NFP_FL_ACTION_OPCODE_PRE_TUNNEL; 324 pre_tun_act->head.len_lw = act_size >> NFP_FL_LW_SIZ; 325 326 return pre_tun_act; 327} 328 329static int 330nfp_fl_push_geneve_options(struct nfp_fl_payload *nfp_fl, int *list_len, 331 const struct flow_action_entry *act, 332 struct netlink_ext_ack *extack) 333{ 334 struct ip_tunnel_info *ip_tun = (struct ip_tunnel_info *)act->tunnel; 335 int opt_len, opt_cnt, act_start, tot_push_len; 336 u8 *src = ip_tunnel_info_opts(ip_tun); 337 338 /* We need to populate the options in reverse order for HW. 339 * Therefore we go through the options, calculating the 340 * number of options and the total size, then we populate 341 * them in reverse order in the action list. 342 */ 343 opt_cnt = 0; 344 tot_push_len = 0; 345 opt_len = ip_tun->options_len; 346 while (opt_len > 0) { 347 struct geneve_opt *opt = (struct geneve_opt *)src; 348 349 opt_cnt++; 350 if (opt_cnt > NFP_FL_MAX_GENEVE_OPT_CNT) { 351 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed number of geneve options exceeded"); 352 return -EOPNOTSUPP; 353 } 354 355 tot_push_len += sizeof(struct nfp_fl_push_geneve) + 356 opt->length * 4; 357 if (tot_push_len > NFP_FL_MAX_GENEVE_OPT_ACT) { 358 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push geneve options"); 359 return -EOPNOTSUPP; 360 } 361 362 opt_len -= sizeof(struct geneve_opt) + opt->length * 4; 363 src += sizeof(struct geneve_opt) + opt->length * 4; 364 } 365 366 if (*list_len + tot_push_len > NFP_FL_MAX_A_SIZ) { 367 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push geneve options"); 368 return -EOPNOTSUPP; 369 } 370 371 act_start = *list_len; 372 *list_len += tot_push_len; 373 src = ip_tunnel_info_opts(ip_tun); 374 while (opt_cnt) { 375 struct geneve_opt *opt = (struct geneve_opt *)src; 376 struct nfp_fl_push_geneve *push; 377 size_t act_size, len; 378 379 opt_cnt--; 380 act_size = sizeof(struct nfp_fl_push_geneve) + opt->length * 4; 381 tot_push_len -= act_size; 382 len = act_start + tot_push_len; 383 384 push = (struct nfp_fl_push_geneve *)&nfp_fl->action_data[len]; 385 push->head.jump_id = NFP_FL_ACTION_OPCODE_PUSH_GENEVE; 386 push->head.len_lw = act_size >> NFP_FL_LW_SIZ; 387 push->reserved = 0; 388 push->class = opt->opt_class; 389 push->type = opt->type; 390 push->length = opt->length; 391 memcpy(&push->opt_data, opt->opt_data, opt->length * 4); 392 393 src += sizeof(struct geneve_opt) + opt->length * 4; 394 } 395 396 return 0; 397} 398 399static int 400nfp_fl_set_tun(struct nfp_app *app, struct nfp_fl_set_tun *set_tun, 401 const struct flow_action_entry *act, 402 struct nfp_fl_pre_tunnel *pre_tun, 403 enum nfp_flower_tun_type tun_type, 404 struct net_device *netdev, struct netlink_ext_ack *extack) 405{ 406 const struct ip_tunnel_info *ip_tun = act->tunnel; 407 bool ipv6 = ip_tunnel_info_af(ip_tun) == AF_INET6; 408 size_t act_size = sizeof(struct nfp_fl_set_tun); 409 struct nfp_flower_priv *priv = app->priv; 410 u32 tmp_set_ip_tun_type_index = 0; 411 /* Currently support one pre-tunnel so index is always 0. */ 412 int pretun_idx = 0; 413 414 if (!IS_ENABLED(CONFIG_IPV6) && ipv6) 415 return -EOPNOTSUPP; 416 417 if (ipv6 && !(priv->flower_ext_feats & NFP_FL_FEATS_IPV6_TUN)) 418 return -EOPNOTSUPP; 419 420 BUILD_BUG_ON(NFP_FL_TUNNEL_CSUM != TUNNEL_CSUM || 421 NFP_FL_TUNNEL_KEY != TUNNEL_KEY || 422 NFP_FL_TUNNEL_GENEVE_OPT != TUNNEL_GENEVE_OPT); 423 if (ip_tun->options_len && 424 (tun_type != NFP_FL_TUNNEL_GENEVE || 425 !(priv->flower_ext_feats & NFP_FL_FEATS_GENEVE_OPT))) { 426 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support geneve options offload"); 427 return -EOPNOTSUPP; 428 } 429 430 if (ip_tun->key.tun_flags & ~NFP_FL_SUPPORTED_UDP_TUN_FLAGS) { 431 NL_SET_ERR_MSG_MOD(extack, 432 "unsupported offload: loaded firmware does not support tunnel flag offload"); 433 return -EOPNOTSUPP; 434 } 435 436 set_tun->head.jump_id = NFP_FL_ACTION_OPCODE_SET_TUNNEL; 437 set_tun->head.len_lw = act_size >> NFP_FL_LW_SIZ; 438 439 /* Set tunnel type and pre-tunnel index. */ 440 tmp_set_ip_tun_type_index |= 441 FIELD_PREP(NFP_FL_TUNNEL_TYPE, tun_type) | 442 FIELD_PREP(NFP_FL_PRE_TUN_INDEX, pretun_idx); 443 444 set_tun->tun_type_index = cpu_to_be32(tmp_set_ip_tun_type_index); 445 if (ip_tun->key.tun_flags & NFP_FL_TUNNEL_KEY) 446 set_tun->tun_id = ip_tun->key.tun_id; 447 448 if (ip_tun->key.ttl) { 449 set_tun->ttl = ip_tun->key.ttl; 450#ifdef CONFIG_IPV6 451 } else if (ipv6) { 452 struct net *net = dev_net(netdev); 453 struct flowi6 flow = {}; 454 struct dst_entry *dst; 455 456 flow.daddr = ip_tun->key.u.ipv6.dst; 457 flow.flowi4_proto = IPPROTO_UDP; 458 dst = ipv6_stub->ipv6_dst_lookup_flow(net, NULL, &flow, NULL); 459 if (!IS_ERR(dst)) { 460 set_tun->ttl = ip6_dst_hoplimit(dst); 461 dst_release(dst); 462 } else { 463 set_tun->ttl = READ_ONCE(net->ipv6.devconf_all->hop_limit); 464 } 465#endif 466 } else { 467 struct net *net = dev_net(netdev); 468 struct flowi4 flow = {}; 469 struct rtable *rt; 470 int err; 471 472 /* Do a route lookup to determine ttl - if fails then use 473 * default. Note that CONFIG_INET is a requirement of 474 * CONFIG_NET_SWITCHDEV so must be defined here. 475 */ 476 flow.daddr = ip_tun->key.u.ipv4.dst; 477 flow.flowi4_proto = IPPROTO_UDP; 478 rt = ip_route_output_key(net, &flow); 479 err = PTR_ERR_OR_ZERO(rt); 480 if (!err) { 481 set_tun->ttl = ip4_dst_hoplimit(&rt->dst); 482 ip_rt_put(rt); 483 } else { 484 set_tun->ttl = READ_ONCE(net->ipv4.sysctl_ip_default_ttl); 485 } 486 } 487 488 set_tun->tos = ip_tun->key.tos; 489 set_tun->tun_flags = ip_tun->key.tun_flags; 490 491 if (tun_type == NFP_FL_TUNNEL_GENEVE) { 492 set_tun->tun_proto = htons(ETH_P_TEB); 493 set_tun->tun_len = ip_tun->options_len / 4; 494 } 495 496 /* Complete pre_tunnel action. */ 497 if (ipv6) { 498 pre_tun->flags |= cpu_to_be16(NFP_FL_PRE_TUN_IPV6); 499 pre_tun->ipv6_dst = ip_tun->key.u.ipv6.dst; 500 } else { 501 pre_tun->ipv4_dst = ip_tun->key.u.ipv4.dst; 502 } 503 504 return 0; 505} 506 507static void nfp_fl_set_helper32(u32 value, u32 mask, u8 *p_exact, u8 *p_mask) 508{ 509 u32 oldvalue = get_unaligned((u32 *)p_exact); 510 u32 oldmask = get_unaligned((u32 *)p_mask); 511 512 value &= mask; 513 value |= oldvalue & ~mask; 514 515 put_unaligned(oldmask | mask, (u32 *)p_mask); 516 put_unaligned(value, (u32 *)p_exact); 517} 518 519static int 520nfp_fl_set_eth(const struct flow_action_entry *act, u32 off, 521 struct nfp_fl_set_eth *set_eth, struct netlink_ext_ack *extack) 522{ 523 u32 exact, mask; 524 525 if (off + 4 > ETH_ALEN * 2) { 526 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit ethernet action"); 527 return -EOPNOTSUPP; 528 } 529 530 mask = ~act->mangle.mask; 531 exact = act->mangle.val; 532 533 if (exact & ~mask) { 534 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit ethernet action"); 535 return -EOPNOTSUPP; 536 } 537 538 nfp_fl_set_helper32(exact, mask, &set_eth->eth_addr_val[off], 539 &set_eth->eth_addr_mask[off]); 540 541 set_eth->reserved = cpu_to_be16(0); 542 set_eth->head.jump_id = NFP_FL_ACTION_OPCODE_SET_ETHERNET; 543 set_eth->head.len_lw = sizeof(*set_eth) >> NFP_FL_LW_SIZ; 544 545 return 0; 546} 547 548struct ipv4_ttl_word { 549 __u8 ttl; 550 __u8 protocol; 551 __sum16 check; 552}; 553 554static int 555nfp_fl_set_ip4(const struct flow_action_entry *act, u32 off, 556 struct nfp_fl_set_ip4_addrs *set_ip_addr, 557 struct nfp_fl_set_ip4_ttl_tos *set_ip_ttl_tos, 558 struct netlink_ext_ack *extack) 559{ 560 struct ipv4_ttl_word *ttl_word_mask; 561 struct ipv4_ttl_word *ttl_word; 562 struct iphdr *tos_word_mask; 563 struct iphdr *tos_word; 564 __be32 exact, mask; 565 566 /* We are expecting tcf_pedit to return a big endian value */ 567 mask = (__force __be32)~act->mangle.mask; 568 exact = (__force __be32)act->mangle.val; 569 570 if (exact & ~mask) { 571 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv4 action"); 572 return -EOPNOTSUPP; 573 } 574 575 switch (off) { 576 case offsetof(struct iphdr, daddr): 577 set_ip_addr->ipv4_dst_mask |= mask; 578 set_ip_addr->ipv4_dst &= ~mask; 579 set_ip_addr->ipv4_dst |= exact & mask; 580 set_ip_addr->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV4_ADDRS; 581 set_ip_addr->head.len_lw = sizeof(*set_ip_addr) >> 582 NFP_FL_LW_SIZ; 583 break; 584 case offsetof(struct iphdr, saddr): 585 set_ip_addr->ipv4_src_mask |= mask; 586 set_ip_addr->ipv4_src &= ~mask; 587 set_ip_addr->ipv4_src |= exact & mask; 588 set_ip_addr->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV4_ADDRS; 589 set_ip_addr->head.len_lw = sizeof(*set_ip_addr) >> 590 NFP_FL_LW_SIZ; 591 break; 592 case offsetof(struct iphdr, ttl): 593 ttl_word_mask = (struct ipv4_ttl_word *)&mask; 594 ttl_word = (struct ipv4_ttl_word *)&exact; 595 596 if (ttl_word_mask->protocol || ttl_word_mask->check) { 597 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv4 ttl action"); 598 return -EOPNOTSUPP; 599 } 600 601 set_ip_ttl_tos->ipv4_ttl_mask |= ttl_word_mask->ttl; 602 set_ip_ttl_tos->ipv4_ttl &= ~ttl_word_mask->ttl; 603 set_ip_ttl_tos->ipv4_ttl |= ttl_word->ttl & ttl_word_mask->ttl; 604 set_ip_ttl_tos->head.jump_id = 605 NFP_FL_ACTION_OPCODE_SET_IPV4_TTL_TOS; 606 set_ip_ttl_tos->head.len_lw = sizeof(*set_ip_ttl_tos) >> 607 NFP_FL_LW_SIZ; 608 break; 609 case round_down(offsetof(struct iphdr, tos), 4): 610 tos_word_mask = (struct iphdr *)&mask; 611 tos_word = (struct iphdr *)&exact; 612 613 if (tos_word_mask->version || tos_word_mask->ihl || 614 tos_word_mask->tot_len) { 615 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv4 tos action"); 616 return -EOPNOTSUPP; 617 } 618 619 set_ip_ttl_tos->ipv4_tos_mask |= tos_word_mask->tos; 620 set_ip_ttl_tos->ipv4_tos &= ~tos_word_mask->tos; 621 set_ip_ttl_tos->ipv4_tos |= tos_word->tos & tos_word_mask->tos; 622 set_ip_ttl_tos->head.jump_id = 623 NFP_FL_ACTION_OPCODE_SET_IPV4_TTL_TOS; 624 set_ip_ttl_tos->head.len_lw = sizeof(*set_ip_ttl_tos) >> 625 NFP_FL_LW_SIZ; 626 break; 627 default: 628 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pedit on unsupported section of IPv4 header"); 629 return -EOPNOTSUPP; 630 } 631 632 return 0; 633} 634 635static void 636nfp_fl_set_ip6_helper(int opcode_tag, u8 word, __be32 exact, __be32 mask, 637 struct nfp_fl_set_ipv6_addr *ip6) 638{ 639 ip6->ipv6[word].mask |= mask; 640 ip6->ipv6[word].exact &= ~mask; 641 ip6->ipv6[word].exact |= exact & mask; 642 643 ip6->reserved = cpu_to_be16(0); 644 ip6->head.jump_id = opcode_tag; 645 ip6->head.len_lw = sizeof(*ip6) >> NFP_FL_LW_SIZ; 646} 647 648struct ipv6_hop_limit_word { 649 __be16 payload_len; 650 u8 nexthdr; 651 u8 hop_limit; 652}; 653 654static int 655nfp_fl_set_ip6_hop_limit_flow_label(u32 off, __be32 exact, __be32 mask, 656 struct nfp_fl_set_ipv6_tc_hl_fl *ip_hl_fl, 657 struct netlink_ext_ack *extack) 658{ 659 struct ipv6_hop_limit_word *fl_hl_mask; 660 struct ipv6_hop_limit_word *fl_hl; 661 662 switch (off) { 663 case offsetof(struct ipv6hdr, payload_len): 664 fl_hl_mask = (struct ipv6_hop_limit_word *)&mask; 665 fl_hl = (struct ipv6_hop_limit_word *)&exact; 666 667 if (fl_hl_mask->nexthdr || fl_hl_mask->payload_len) { 668 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv6 hop limit action"); 669 return -EOPNOTSUPP; 670 } 671 672 ip_hl_fl->ipv6_hop_limit_mask |= fl_hl_mask->hop_limit; 673 ip_hl_fl->ipv6_hop_limit &= ~fl_hl_mask->hop_limit; 674 ip_hl_fl->ipv6_hop_limit |= fl_hl->hop_limit & 675 fl_hl_mask->hop_limit; 676 break; 677 case round_down(offsetof(struct ipv6hdr, flow_lbl), 4): 678 if (mask & ~IPV6_FLOWINFO_MASK || 679 exact & ~IPV6_FLOWINFO_MASK) { 680 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv6 flow info action"); 681 return -EOPNOTSUPP; 682 } 683 684 ip_hl_fl->ipv6_label_mask |= mask; 685 ip_hl_fl->ipv6_label &= ~mask; 686 ip_hl_fl->ipv6_label |= exact & mask; 687 break; 688 } 689 690 ip_hl_fl->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV6_TC_HL_FL; 691 ip_hl_fl->head.len_lw = sizeof(*ip_hl_fl) >> NFP_FL_LW_SIZ; 692 693 return 0; 694} 695 696static int 697nfp_fl_set_ip6(const struct flow_action_entry *act, u32 off, 698 struct nfp_fl_set_ipv6_addr *ip_dst, 699 struct nfp_fl_set_ipv6_addr *ip_src, 700 struct nfp_fl_set_ipv6_tc_hl_fl *ip_hl_fl, 701 struct netlink_ext_ack *extack) 702{ 703 __be32 exact, mask; 704 int err = 0; 705 u8 word; 706 707 /* We are expecting tcf_pedit to return a big endian value */ 708 mask = (__force __be32)~act->mangle.mask; 709 exact = (__force __be32)act->mangle.val; 710 711 if (exact & ~mask) { 712 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv6 action"); 713 return -EOPNOTSUPP; 714 } 715 716 if (off < offsetof(struct ipv6hdr, saddr)) { 717 err = nfp_fl_set_ip6_hop_limit_flow_label(off, exact, mask, 718 ip_hl_fl, extack); 719 } else if (off < offsetof(struct ipv6hdr, daddr)) { 720 word = (off - offsetof(struct ipv6hdr, saddr)) / sizeof(exact); 721 nfp_fl_set_ip6_helper(NFP_FL_ACTION_OPCODE_SET_IPV6_SRC, word, 722 exact, mask, ip_src); 723 } else if (off < offsetof(struct ipv6hdr, daddr) + 724 sizeof(struct in6_addr)) { 725 word = (off - offsetof(struct ipv6hdr, daddr)) / sizeof(exact); 726 nfp_fl_set_ip6_helper(NFP_FL_ACTION_OPCODE_SET_IPV6_DST, word, 727 exact, mask, ip_dst); 728 } else { 729 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pedit on unsupported section of IPv6 header"); 730 return -EOPNOTSUPP; 731 } 732 733 return err; 734} 735 736static int 737nfp_fl_set_tport(const struct flow_action_entry *act, u32 off, 738 struct nfp_fl_set_tport *set_tport, int opcode, 739 struct netlink_ext_ack *extack) 740{ 741 u32 exact, mask; 742 743 if (off) { 744 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pedit on unsupported section of L4 header"); 745 return -EOPNOTSUPP; 746 } 747 748 mask = ~act->mangle.mask; 749 exact = act->mangle.val; 750 751 if (exact & ~mask) { 752 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit L4 action"); 753 return -EOPNOTSUPP; 754 } 755 756 nfp_fl_set_helper32(exact, mask, set_tport->tp_port_val, 757 set_tport->tp_port_mask); 758 759 set_tport->reserved = cpu_to_be16(0); 760 set_tport->head.jump_id = opcode; 761 set_tport->head.len_lw = sizeof(*set_tport) >> NFP_FL_LW_SIZ; 762 763 return 0; 764} 765 766static u32 nfp_fl_csum_l4_to_flag(u8 ip_proto) 767{ 768 switch (ip_proto) { 769 case 0: 770 /* Filter doesn't force proto match, 771 * both TCP and UDP will be updated if encountered 772 */ 773 return TCA_CSUM_UPDATE_FLAG_TCP | TCA_CSUM_UPDATE_FLAG_UDP; 774 case IPPROTO_TCP: 775 return TCA_CSUM_UPDATE_FLAG_TCP; 776 case IPPROTO_UDP: 777 return TCA_CSUM_UPDATE_FLAG_UDP; 778 default: 779 /* All other protocols will be ignored by FW */ 780 return 0; 781 } 782} 783 784struct nfp_flower_pedit_acts { 785 struct nfp_fl_set_ipv6_addr set_ip6_dst, set_ip6_src; 786 struct nfp_fl_set_ipv6_tc_hl_fl set_ip6_tc_hl_fl; 787 struct nfp_fl_set_ip4_ttl_tos set_ip_ttl_tos; 788 struct nfp_fl_set_ip4_addrs set_ip_addr; 789 struct nfp_fl_set_tport set_tport; 790 struct nfp_fl_set_eth set_eth; 791}; 792 793static int 794nfp_fl_commit_mangle(struct flow_rule *rule, char *nfp_action, 795 int *a_len, struct nfp_flower_pedit_acts *set_act, 796 u32 *csum_updated) 797{ 798 size_t act_size = 0; 799 u8 ip_proto = 0; 800 801 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 802 struct flow_match_basic match; 803 804 flow_rule_match_basic(rule, &match); 805 ip_proto = match.key->ip_proto; 806 } 807 808 if (set_act->set_eth.head.len_lw) { 809 act_size = sizeof(set_act->set_eth); 810 memcpy(nfp_action, &set_act->set_eth, act_size); 811 *a_len += act_size; 812 } 813 814 if (set_act->set_ip_ttl_tos.head.len_lw) { 815 nfp_action += act_size; 816 act_size = sizeof(set_act->set_ip_ttl_tos); 817 memcpy(nfp_action, &set_act->set_ip_ttl_tos, act_size); 818 *a_len += act_size; 819 820 /* Hardware will automatically fix IPv4 and TCP/UDP checksum. */ 821 *csum_updated |= TCA_CSUM_UPDATE_FLAG_IPV4HDR | 822 nfp_fl_csum_l4_to_flag(ip_proto); 823 } 824 825 if (set_act->set_ip_addr.head.len_lw) { 826 nfp_action += act_size; 827 act_size = sizeof(set_act->set_ip_addr); 828 memcpy(nfp_action, &set_act->set_ip_addr, act_size); 829 *a_len += act_size; 830 831 /* Hardware will automatically fix IPv4 and TCP/UDP checksum. */ 832 *csum_updated |= TCA_CSUM_UPDATE_FLAG_IPV4HDR | 833 nfp_fl_csum_l4_to_flag(ip_proto); 834 } 835 836 if (set_act->set_ip6_tc_hl_fl.head.len_lw) { 837 nfp_action += act_size; 838 act_size = sizeof(set_act->set_ip6_tc_hl_fl); 839 memcpy(nfp_action, &set_act->set_ip6_tc_hl_fl, act_size); 840 *a_len += act_size; 841 842 /* Hardware will automatically fix TCP/UDP checksum. */ 843 *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); 844 } 845 846 if (set_act->set_ip6_dst.head.len_lw && 847 set_act->set_ip6_src.head.len_lw) { 848 /* TC compiles set src and dst IPv6 address as a single action, 849 * the hardware requires this to be 2 separate actions. 850 */ 851 nfp_action += act_size; 852 act_size = sizeof(set_act->set_ip6_src); 853 memcpy(nfp_action, &set_act->set_ip6_src, act_size); 854 *a_len += act_size; 855 856 act_size = sizeof(set_act->set_ip6_dst); 857 memcpy(&nfp_action[sizeof(set_act->set_ip6_src)], 858 &set_act->set_ip6_dst, act_size); 859 *a_len += act_size; 860 861 /* Hardware will automatically fix TCP/UDP checksum. */ 862 *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); 863 } else if (set_act->set_ip6_dst.head.len_lw) { 864 nfp_action += act_size; 865 act_size = sizeof(set_act->set_ip6_dst); 866 memcpy(nfp_action, &set_act->set_ip6_dst, act_size); 867 *a_len += act_size; 868 869 /* Hardware will automatically fix TCP/UDP checksum. */ 870 *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); 871 } else if (set_act->set_ip6_src.head.len_lw) { 872 nfp_action += act_size; 873 act_size = sizeof(set_act->set_ip6_src); 874 memcpy(nfp_action, &set_act->set_ip6_src, act_size); 875 *a_len += act_size; 876 877 /* Hardware will automatically fix TCP/UDP checksum. */ 878 *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); 879 } 880 if (set_act->set_tport.head.len_lw) { 881 nfp_action += act_size; 882 act_size = sizeof(set_act->set_tport); 883 memcpy(nfp_action, &set_act->set_tport, act_size); 884 *a_len += act_size; 885 886 /* Hardware will automatically fix TCP/UDP checksum. */ 887 *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); 888 } 889 890 return 0; 891} 892 893static int 894nfp_fl_pedit(const struct flow_action_entry *act, 895 char *nfp_action, int *a_len, 896 u32 *csum_updated, struct nfp_flower_pedit_acts *set_act, 897 struct netlink_ext_ack *extack) 898{ 899 enum flow_action_mangle_base htype; 900 u32 offset; 901 902 htype = act->mangle.htype; 903 offset = act->mangle.offset; 904 905 switch (htype) { 906 case TCA_PEDIT_KEY_EX_HDR_TYPE_ETH: 907 return nfp_fl_set_eth(act, offset, &set_act->set_eth, extack); 908 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4: 909 return nfp_fl_set_ip4(act, offset, &set_act->set_ip_addr, 910 &set_act->set_ip_ttl_tos, extack); 911 case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6: 912 return nfp_fl_set_ip6(act, offset, &set_act->set_ip6_dst, 913 &set_act->set_ip6_src, 914 &set_act->set_ip6_tc_hl_fl, extack); 915 case TCA_PEDIT_KEY_EX_HDR_TYPE_TCP: 916 return nfp_fl_set_tport(act, offset, &set_act->set_tport, 917 NFP_FL_ACTION_OPCODE_SET_TCP, extack); 918 case TCA_PEDIT_KEY_EX_HDR_TYPE_UDP: 919 return nfp_fl_set_tport(act, offset, &set_act->set_tport, 920 NFP_FL_ACTION_OPCODE_SET_UDP, extack); 921 default: 922 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pedit on unsupported header"); 923 return -EOPNOTSUPP; 924 } 925} 926 927static struct nfp_fl_meter *nfp_fl_meter(char *act_data) 928{ 929 size_t act_size = sizeof(struct nfp_fl_meter); 930 struct nfp_fl_meter *meter_act; 931 932 meter_act = (struct nfp_fl_meter *)act_data; 933 934 memset(meter_act, 0, act_size); 935 936 meter_act->head.jump_id = NFP_FL_ACTION_OPCODE_METER; 937 meter_act->head.len_lw = act_size >> NFP_FL_LW_SIZ; 938 939 return meter_act; 940} 941 942static int 943nfp_flower_meter_action(struct nfp_app *app, 944 const struct flow_action_entry *action, 945 struct nfp_fl_payload *nfp_fl, int *a_len, 946 struct net_device *netdev, 947 struct netlink_ext_ack *extack) 948{ 949 struct nfp_fl_meter *fl_meter; 950 u32 meter_id; 951 952 if (*a_len + sizeof(struct nfp_fl_meter) > NFP_FL_MAX_A_SIZ) { 953 NL_SET_ERR_MSG_MOD(extack, 954 "unsupported offload:meter action size beyond the allowed maximum"); 955 return -EOPNOTSUPP; 956 } 957 958 meter_id = action->hw_index; 959 if (!nfp_flower_search_meter_entry(app, meter_id)) { 960 NL_SET_ERR_MSG_MOD(extack, 961 "can not offload flow table with unsupported police action."); 962 return -EOPNOTSUPP; 963 } 964 965 fl_meter = nfp_fl_meter(&nfp_fl->action_data[*a_len]); 966 *a_len += sizeof(struct nfp_fl_meter); 967 fl_meter->meter_id = cpu_to_be32(meter_id); 968 969 return 0; 970} 971 972static int 973nfp_flower_output_action(struct nfp_app *app, 974 const struct flow_action_entry *act, 975 struct nfp_fl_payload *nfp_fl, int *a_len, 976 struct net_device *netdev, bool last, 977 enum nfp_flower_tun_type *tun_type, int *tun_out_cnt, 978 int *out_cnt, u32 *csum_updated, bool pkt_host, 979 struct netlink_ext_ack *extack) 980{ 981 struct nfp_flower_priv *priv = app->priv; 982 struct nfp_fl_output *output; 983 int err, prelag_size; 984 985 /* If csum_updated has not been reset by now, it means HW will 986 * incorrectly update csums when they are not requested. 987 */ 988 if (*csum_updated) { 989 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: set actions without updating checksums are not supported"); 990 return -EOPNOTSUPP; 991 } 992 993 if (*a_len + sizeof(struct nfp_fl_output) > NFP_FL_MAX_A_SIZ) { 994 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: mirred output increases action list size beyond the allowed maximum"); 995 return -EOPNOTSUPP; 996 } 997 998 output = (struct nfp_fl_output *)&nfp_fl->action_data[*a_len]; 999 err = nfp_fl_output(app, output, act, nfp_fl, last, netdev, *tun_type, 1000 tun_out_cnt, pkt_host, extack); 1001 if (err) 1002 return err; 1003 1004 *a_len += sizeof(struct nfp_fl_output); 1005 1006 if (priv->flower_en_feats & NFP_FL_ENABLE_LAG) { 1007 /* nfp_fl_pre_lag returns -err or size of prelag action added. 1008 * This will be 0 if it is not egressing to a lag dev. 1009 */ 1010 prelag_size = nfp_fl_pre_lag(app, act, nfp_fl, *a_len, extack); 1011 if (prelag_size < 0) { 1012 return prelag_size; 1013 } else if (prelag_size > 0 && (!last || *out_cnt)) { 1014 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: LAG action has to be last action in action list"); 1015 return -EOPNOTSUPP; 1016 } 1017 1018 *a_len += prelag_size; 1019 } 1020 (*out_cnt)++; 1021 1022 return 0; 1023} 1024 1025static int 1026nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act, 1027 struct flow_rule *rule, 1028 struct nfp_fl_payload *nfp_fl, int *a_len, 1029 struct net_device *netdev, 1030 enum nfp_flower_tun_type *tun_type, int *tun_out_cnt, 1031 int *out_cnt, u32 *csum_updated, 1032 struct nfp_flower_pedit_acts *set_act, bool *pkt_host, 1033 struct netlink_ext_ack *extack, int act_idx) 1034{ 1035 struct nfp_flower_priv *fl_priv = app->priv; 1036 struct nfp_fl_pre_tunnel *pre_tun; 1037 struct nfp_fl_set_tun *set_tun; 1038 struct nfp_fl_push_vlan *psh_v; 1039 struct nfp_fl_push_mpls *psh_m; 1040 struct nfp_fl_pop_vlan *pop_v; 1041 struct nfp_fl_pop_mpls *pop_m; 1042 struct nfp_fl_set_mpls *set_m; 1043 int err; 1044 1045 switch (act->id) { 1046 case FLOW_ACTION_DROP: 1047 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_DROP); 1048 break; 1049 case FLOW_ACTION_REDIRECT_INGRESS: 1050 case FLOW_ACTION_REDIRECT: 1051 err = nfp_flower_output_action(app, act, nfp_fl, a_len, netdev, 1052 true, tun_type, tun_out_cnt, 1053 out_cnt, csum_updated, *pkt_host, 1054 extack); 1055 if (err) 1056 return err; 1057 break; 1058 case FLOW_ACTION_MIRRED_INGRESS: 1059 case FLOW_ACTION_MIRRED: 1060 err = nfp_flower_output_action(app, act, nfp_fl, a_len, netdev, 1061 false, tun_type, tun_out_cnt, 1062 out_cnt, csum_updated, *pkt_host, 1063 extack); 1064 if (err) 1065 return err; 1066 break; 1067 case FLOW_ACTION_VLAN_POP: 1068 if (*a_len + 1069 sizeof(struct nfp_fl_pop_vlan) > NFP_FL_MAX_A_SIZ) { 1070 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at pop vlan"); 1071 return -EOPNOTSUPP; 1072 } 1073 1074 pop_v = (struct nfp_fl_pop_vlan *)&nfp_fl->action_data[*a_len]; 1075 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_POPV); 1076 1077 nfp_fl_pop_vlan(pop_v); 1078 *a_len += sizeof(struct nfp_fl_pop_vlan); 1079 break; 1080 case FLOW_ACTION_VLAN_PUSH: 1081 if (*a_len + 1082 sizeof(struct nfp_fl_push_vlan) > NFP_FL_MAX_A_SIZ) { 1083 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push vlan"); 1084 return -EOPNOTSUPP; 1085 } 1086 1087 psh_v = (struct nfp_fl_push_vlan *)&nfp_fl->action_data[*a_len]; 1088 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); 1089 1090 nfp_fl_push_vlan(psh_v, act); 1091 *a_len += sizeof(struct nfp_fl_push_vlan); 1092 break; 1093 case FLOW_ACTION_TUNNEL_ENCAP: { 1094 const struct ip_tunnel_info *ip_tun = act->tunnel; 1095 1096 *tun_type = nfp_fl_get_tun_from_act(app, rule, act, act_idx); 1097 if (*tun_type == NFP_FL_TUNNEL_NONE) { 1098 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported tunnel type in action list"); 1099 return -EOPNOTSUPP; 1100 } 1101 1102 if (ip_tun->mode & ~NFP_FL_SUPPORTED_TUNNEL_INFO_FLAGS) { 1103 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported tunnel flags in action list"); 1104 return -EOPNOTSUPP; 1105 } 1106 1107 /* Pre-tunnel action is required for tunnel encap. 1108 * This checks for next hop entries on NFP. 1109 * If none, the packet falls back before applying other actions. 1110 */ 1111 if (*a_len + sizeof(struct nfp_fl_pre_tunnel) + 1112 sizeof(struct nfp_fl_set_tun) > NFP_FL_MAX_A_SIZ) { 1113 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at tunnel encap"); 1114 return -EOPNOTSUPP; 1115 } 1116 1117 pre_tun = nfp_fl_pre_tunnel(nfp_fl->action_data, *a_len); 1118 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); 1119 *a_len += sizeof(struct nfp_fl_pre_tunnel); 1120 1121 err = nfp_fl_push_geneve_options(nfp_fl, a_len, act, extack); 1122 if (err) 1123 return err; 1124 1125 set_tun = (void *)&nfp_fl->action_data[*a_len]; 1126 err = nfp_fl_set_tun(app, set_tun, act, pre_tun, *tun_type, 1127 netdev, extack); 1128 if (err) 1129 return err; 1130 *a_len += sizeof(struct nfp_fl_set_tun); 1131 } 1132 break; 1133 case FLOW_ACTION_TUNNEL_DECAP: 1134 /* Tunnel decap is handled by default so accept action. */ 1135 return 0; 1136 case FLOW_ACTION_MANGLE: 1137 if (nfp_fl_pedit(act, &nfp_fl->action_data[*a_len], 1138 a_len, csum_updated, set_act, extack)) 1139 return -EOPNOTSUPP; 1140 break; 1141 case FLOW_ACTION_CSUM: 1142 /* csum action requests recalc of something we have not fixed */ 1143 if (act->csum_flags & ~*csum_updated) { 1144 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported csum update action in action list"); 1145 return -EOPNOTSUPP; 1146 } 1147 /* If we will correctly fix the csum we can remove it from the 1148 * csum update list. Which will later be used to check support. 1149 */ 1150 *csum_updated &= ~act->csum_flags; 1151 break; 1152 case FLOW_ACTION_MPLS_PUSH: 1153 if (*a_len + 1154 sizeof(struct nfp_fl_push_mpls) > NFP_FL_MAX_A_SIZ) { 1155 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push MPLS"); 1156 return -EOPNOTSUPP; 1157 } 1158 1159 psh_m = (struct nfp_fl_push_mpls *)&nfp_fl->action_data[*a_len]; 1160 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); 1161 1162 err = nfp_fl_push_mpls(psh_m, act, extack); 1163 if (err) 1164 return err; 1165 *a_len += sizeof(struct nfp_fl_push_mpls); 1166 break; 1167 case FLOW_ACTION_MPLS_POP: 1168 if (*a_len + 1169 sizeof(struct nfp_fl_pop_mpls) > NFP_FL_MAX_A_SIZ) { 1170 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at pop MPLS"); 1171 return -EOPNOTSUPP; 1172 } 1173 1174 pop_m = (struct nfp_fl_pop_mpls *)&nfp_fl->action_data[*a_len]; 1175 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); 1176 1177 nfp_fl_pop_mpls(pop_m, act); 1178 *a_len += sizeof(struct nfp_fl_pop_mpls); 1179 break; 1180 case FLOW_ACTION_MPLS_MANGLE: 1181 if (*a_len + 1182 sizeof(struct nfp_fl_set_mpls) > NFP_FL_MAX_A_SIZ) { 1183 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at set MPLS"); 1184 return -EOPNOTSUPP; 1185 } 1186 1187 set_m = (struct nfp_fl_set_mpls *)&nfp_fl->action_data[*a_len]; 1188 nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); 1189 1190 nfp_fl_set_mpls(set_m, act); 1191 *a_len += sizeof(struct nfp_fl_set_mpls); 1192 break; 1193 case FLOW_ACTION_PTYPE: 1194 /* TC ptype skbedit sets PACKET_HOST for ingress redirect. */ 1195 if (act->ptype != PACKET_HOST) 1196 return -EOPNOTSUPP; 1197 1198 *pkt_host = true; 1199 break; 1200 case FLOW_ACTION_POLICE: 1201 if (!(fl_priv->flower_ext_feats & NFP_FL_FEATS_QOS_METER)) { 1202 NL_SET_ERR_MSG_MOD(extack, 1203 "unsupported offload: unsupported police action in action list"); 1204 return -EOPNOTSUPP; 1205 } 1206 1207 err = nfp_flower_meter_action(app, act, nfp_fl, a_len, netdev, 1208 extack); 1209 if (err) 1210 return err; 1211 break; 1212 default: 1213 /* Currently we do not handle any other actions. */ 1214 NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported action in action list"); 1215 return -EOPNOTSUPP; 1216 } 1217 1218 return 0; 1219} 1220 1221static bool nfp_fl_check_mangle_start(struct flow_action *flow_act, 1222 int current_act_idx) 1223{ 1224 struct flow_action_entry current_act; 1225 struct flow_action_entry prev_act; 1226 1227 current_act = flow_act->entries[current_act_idx]; 1228 if (current_act.id != FLOW_ACTION_MANGLE) 1229 return false; 1230 1231 if (current_act_idx == 0) 1232 return true; 1233 1234 prev_act = flow_act->entries[current_act_idx - 1]; 1235 1236 return prev_act.id != FLOW_ACTION_MANGLE; 1237} 1238 1239static bool nfp_fl_check_mangle_end(struct flow_action *flow_act, 1240 int current_act_idx) 1241{ 1242 struct flow_action_entry current_act; 1243 struct flow_action_entry next_act; 1244 1245 current_act = flow_act->entries[current_act_idx]; 1246 if (current_act.id != FLOW_ACTION_MANGLE) 1247 return false; 1248 1249 if (current_act_idx == flow_act->num_entries) 1250 return true; 1251 1252 next_act = flow_act->entries[current_act_idx + 1]; 1253 1254 return next_act.id != FLOW_ACTION_MANGLE; 1255} 1256 1257int nfp_flower_compile_action(struct nfp_app *app, 1258 struct flow_rule *rule, 1259 struct net_device *netdev, 1260 struct nfp_fl_payload *nfp_flow, 1261 struct netlink_ext_ack *extack) 1262{ 1263 int act_len, act_cnt, err, tun_out_cnt, out_cnt, i; 1264 struct nfp_flower_pedit_acts set_act; 1265 enum nfp_flower_tun_type tun_type; 1266 struct flow_action_entry *act; 1267 bool pkt_host = false; 1268 u32 csum_updated = 0; 1269 1270 if (!flow_action_hw_stats_check(&rule->action, extack, 1271 FLOW_ACTION_HW_STATS_DELAYED_BIT)) 1272 return -EOPNOTSUPP; 1273 1274 memset(nfp_flow->action_data, 0, NFP_FL_MAX_A_SIZ); 1275 nfp_flow->meta.act_len = 0; 1276 tun_type = NFP_FL_TUNNEL_NONE; 1277 act_len = 0; 1278 act_cnt = 0; 1279 tun_out_cnt = 0; 1280 out_cnt = 0; 1281 1282 flow_action_for_each(i, act, &rule->action) { 1283 if (nfp_fl_check_mangle_start(&rule->action, i)) 1284 memset(&set_act, 0, sizeof(set_act)); 1285 err = nfp_flower_loop_action(app, act, rule, nfp_flow, &act_len, 1286 netdev, &tun_type, &tun_out_cnt, 1287 &out_cnt, &csum_updated, 1288 &set_act, &pkt_host, extack, i); 1289 if (err) 1290 return err; 1291 act_cnt++; 1292 if (nfp_fl_check_mangle_end(&rule->action, i)) 1293 nfp_fl_commit_mangle(rule, 1294 &nfp_flow->action_data[act_len], 1295 &act_len, &set_act, &csum_updated); 1296 } 1297 1298 /* We optimise when the action list is small, this can unfortunately 1299 * not happen once we have more than one action in the action list. 1300 */ 1301 if (act_cnt > 1) 1302 nfp_flow->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); 1303 1304 nfp_flow->meta.act_len = act_len; 1305 1306 return 0; 1307} 1308