From: Ivan Malov Date: Fri, 12 Mar 2021 11:07:43 +0000 (+0300) Subject: net/sfc: support action VXLAN encap in MAE backend X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=1bbd1ec2348a;p=dpdk.git net/sfc: support action VXLAN encap in MAE backend Provide necessary facilities for handling this action. Signed-off-by: Ivan Malov Reviewed-by: Andrew Rybchenko Reviewed-by: Andy Moreton --- diff --git a/drivers/net/sfc/sfc_mae.c b/drivers/net/sfc/sfc_mae.c index bbf328b2cb..5eb3f4a7dc 100644 --- a/drivers/net/sfc/sfc_mae.c +++ b/drivers/net/sfc/sfc_mae.c @@ -9,7 +9,9 @@ #include +#include #include +#include #include "efx.h" @@ -35,6 +37,7 @@ sfc_mae_attach(struct sfc_adapter *sa) const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic); efx_mport_sel_t entity_mport; struct sfc_mae *mae = &sa->mae; + struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh; efx_mae_limits_t limits; int rc; @@ -80,17 +83,26 @@ sfc_mae_attach(struct sfc_adapter *sa) if (rc != 0) goto fail_mae_assign_switch_port; + sfc_log_init(sa, "allocate encap. header bounce buffer"); + bounce_eh->buf_size = limits.eml_encap_header_size_limit; + bounce_eh->buf = rte_malloc("sfc_mae_bounce_eh", + bounce_eh->buf_size, 0); + if (bounce_eh->buf == NULL) + goto fail_mae_alloc_bounce_eh; + mae->status = SFC_MAE_STATUS_SUPPORTED; mae->nb_outer_rule_prios_max = limits.eml_max_n_outer_prios; mae->nb_action_rule_prios_max = limits.eml_max_n_action_prios; mae->encap_types_supported = limits.eml_encap_types_supported; TAILQ_INIT(&mae->outer_rules); + TAILQ_INIT(&mae->encap_headers); TAILQ_INIT(&mae->action_sets); sfc_log_init(sa, "done"); return 0; +fail_mae_alloc_bounce_eh: fail_mae_assign_switch_port: fail_mae_assign_switch_domain: fail_mae_assign_entity_mport: @@ -117,6 +129,8 @@ sfc_mae_detach(struct sfc_adapter *sa) if (status_prev != SFC_MAE_STATUS_SUPPORTED) return; + rte_free(mae->bounce_eh.buf); + efx_mae_fini(sa->nic); sfc_log_init(sa, "done"); @@ -254,8 +268,165 @@ sfc_mae_outer_rule_disable(struct sfc_adapter *sa, return 0; } +static struct sfc_mae_encap_header * +sfc_mae_encap_header_attach(struct sfc_adapter *sa, + const struct sfc_mae_bounce_eh *bounce_eh) +{ + struct sfc_mae_encap_header *encap_header; + struct sfc_mae *mae = &sa->mae; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + + TAILQ_FOREACH(encap_header, &mae->encap_headers, entries) { + if (encap_header->size == bounce_eh->size && + memcmp(encap_header->buf, bounce_eh->buf, + bounce_eh->size) == 0) { + ++(encap_header->refcnt); + return encap_header; + } + } + + return NULL; +} + +static int +sfc_mae_encap_header_add(struct sfc_adapter *sa, + const struct sfc_mae_bounce_eh *bounce_eh, + struct sfc_mae_encap_header **encap_headerp) +{ + struct sfc_mae_encap_header *encap_header; + struct sfc_mae *mae = &sa->mae; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + + encap_header = rte_zmalloc("sfc_mae_encap_header", + sizeof(*encap_header), 0); + if (encap_header == NULL) + return ENOMEM; + + encap_header->size = bounce_eh->size; + + encap_header->buf = rte_malloc("sfc_mae_encap_header_buf", + encap_header->size, 0); + if (encap_header->buf == NULL) { + rte_free(encap_header); + return ENOMEM; + } + + rte_memcpy(encap_header->buf, bounce_eh->buf, bounce_eh->size); + + encap_header->refcnt = 1; + encap_header->type = bounce_eh->type; + encap_header->fw_rsrc.eh_id.id = EFX_MAE_RSRC_ID_INVALID; + + TAILQ_INSERT_TAIL(&mae->encap_headers, encap_header, entries); + + *encap_headerp = encap_header; + + return 0; +} + +static void +sfc_mae_encap_header_del(struct sfc_adapter *sa, + struct sfc_mae_encap_header *encap_header) +{ + struct sfc_mae *mae = &sa->mae; + + if (encap_header == NULL) + return; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + SFC_ASSERT(encap_header->refcnt != 0); + + --(encap_header->refcnt); + + if (encap_header->refcnt != 0) + return; + + SFC_ASSERT(encap_header->fw_rsrc.eh_id.id == EFX_MAE_RSRC_ID_INVALID); + SFC_ASSERT(encap_header->fw_rsrc.refcnt == 0); + + TAILQ_REMOVE(&mae->encap_headers, encap_header, entries); + rte_free(encap_header->buf); + rte_free(encap_header); +} + +static int +sfc_mae_encap_header_enable(struct sfc_adapter *sa, + struct sfc_mae_encap_header *encap_header, + efx_mae_actions_t *action_set_spec) +{ + struct sfc_mae_fw_rsrc *fw_rsrc; + int rc; + + if (encap_header == NULL) + return 0; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + + fw_rsrc = &encap_header->fw_rsrc; + + if (fw_rsrc->refcnt == 0) { + SFC_ASSERT(fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID); + SFC_ASSERT(encap_header->buf != NULL); + SFC_ASSERT(encap_header->size != 0); + + rc = efx_mae_encap_header_alloc(sa->nic, encap_header->type, + encap_header->buf, + encap_header->size, + &fw_rsrc->eh_id); + if (rc != 0) + return rc; + } + + rc = efx_mae_action_set_fill_in_eh_id(action_set_spec, + &fw_rsrc->eh_id); + if (rc != 0) { + if (fw_rsrc->refcnt == 0) { + (void)efx_mae_encap_header_free(sa->nic, + &fw_rsrc->eh_id); + } + return rc; + } + + ++(fw_rsrc->refcnt); + + return 0; +} + +static int +sfc_mae_encap_header_disable(struct sfc_adapter *sa, + struct sfc_mae_encap_header *encap_header) +{ + struct sfc_mae_fw_rsrc *fw_rsrc; + int rc; + + if (encap_header == NULL) + return 0; + + SFC_ASSERT(sfc_adapter_is_locked(sa)); + + fw_rsrc = &encap_header->fw_rsrc; + + SFC_ASSERT(fw_rsrc->eh_id.id != EFX_MAE_RSRC_ID_INVALID); + SFC_ASSERT(fw_rsrc->refcnt != 0); + + if (fw_rsrc->refcnt == 1) { + rc = efx_mae_encap_header_free(sa->nic, &fw_rsrc->eh_id); + if (rc != 0) + return rc; + + fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID; + } + + --(fw_rsrc->refcnt); + + return 0; +} + static struct sfc_mae_action_set * sfc_mae_action_set_attach(struct sfc_adapter *sa, + const struct sfc_mae_encap_header *encap_header, const efx_mae_actions_t *spec) { struct sfc_mae_action_set *action_set; @@ -264,7 +435,8 @@ sfc_mae_action_set_attach(struct sfc_adapter *sa, SFC_ASSERT(sfc_adapter_is_locked(sa)); TAILQ_FOREACH(action_set, &mae->action_sets, entries) { - if (efx_mae_action_set_specs_equal(action_set->spec, spec)) { + if (action_set->encap_header == encap_header && + efx_mae_action_set_specs_equal(action_set->spec, spec)) { ++(action_set->refcnt); return action_set; } @@ -276,6 +448,7 @@ sfc_mae_action_set_attach(struct sfc_adapter *sa, static int sfc_mae_action_set_add(struct sfc_adapter *sa, efx_mae_actions_t *spec, + struct sfc_mae_encap_header *encap_header, struct sfc_mae_action_set **action_setp) { struct sfc_mae_action_set *action_set; @@ -289,6 +462,7 @@ sfc_mae_action_set_add(struct sfc_adapter *sa, action_set->refcnt = 1; action_set->spec = spec; + action_set->encap_header = encap_header; action_set->fw_rsrc.aset_id.id = EFX_MAE_RSRC_ID_INVALID; @@ -317,6 +491,7 @@ sfc_mae_action_set_del(struct sfc_adapter *sa, SFC_ASSERT(action_set->fw_rsrc.refcnt == 0); efx_mae_action_set_spec_fini(sa->nic, action_set->spec); + sfc_mae_encap_header_del(sa, action_set->encap_header); TAILQ_REMOVE(&mae->action_sets, action_set, entries); rte_free(action_set); } @@ -325,6 +500,7 @@ static int sfc_mae_action_set_enable(struct sfc_adapter *sa, struct sfc_mae_action_set *action_set) { + struct sfc_mae_encap_header *encap_header = action_set->encap_header; struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc; int rc; @@ -334,10 +510,18 @@ sfc_mae_action_set_enable(struct sfc_adapter *sa, SFC_ASSERT(fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID); SFC_ASSERT(action_set->spec != NULL); + rc = sfc_mae_encap_header_enable(sa, encap_header, + action_set->spec); + if (rc != 0) + return rc; + rc = efx_mae_action_set_alloc(sa->nic, action_set->spec, &fw_rsrc->aset_id); - if (rc != 0) + if (rc != 0) { + (void)sfc_mae_encap_header_disable(sa, encap_header); + return rc; + } } ++(fw_rsrc->refcnt); @@ -362,6 +546,10 @@ sfc_mae_action_set_disable(struct sfc_adapter *sa, return rc; fw_rsrc->aset_id.id = EFX_MAE_RSRC_ID_INVALID; + + rc = sfc_mae_encap_header_disable(sa, action_set->encap_header); + if (rc != 0) + return rc; } --(fw_rsrc->refcnt); @@ -1936,6 +2124,307 @@ sfc_mae_rule_parse_action_of_set_vlan_pcp( bundle->vlan_push_tci |= rte_cpu_to_be_16(vlan_tci_pcp); } +struct sfc_mae_parsed_item { + const struct rte_flow_item *item; + size_t proto_header_ofst; + size_t proto_header_size; +}; + +/* + * For each 16-bit word of the given header, override + * bits enforced by the corresponding 16-bit mask. + */ +static void +sfc_mae_header_force_item_masks(uint8_t *header_buf, + const struct sfc_mae_parsed_item *parsed_items, + unsigned int nb_parsed_items) +{ + unsigned int item_idx; + + for (item_idx = 0; item_idx < nb_parsed_items; ++item_idx) { + const struct sfc_mae_parsed_item *parsed_item; + const struct rte_flow_item *item; + size_t proto_header_size; + size_t ofst; + + parsed_item = &parsed_items[item_idx]; + proto_header_size = parsed_item->proto_header_size; + item = parsed_item->item; + + for (ofst = 0; ofst < proto_header_size; + ofst += sizeof(rte_be16_t)) { + rte_be16_t *wp = RTE_PTR_ADD(header_buf, ofst); + const rte_be16_t *w_maskp; + const rte_be16_t *w_specp; + + w_maskp = RTE_PTR_ADD(item->mask, ofst); + w_specp = RTE_PTR_ADD(item->spec, ofst); + + *wp &= ~(*w_maskp); + *wp |= (*w_specp & *w_maskp); + } + + header_buf += proto_header_size; + } +} + +#define SFC_IPV4_TTL_DEF 0x40 +#define SFC_IPV6_VTC_FLOW_DEF 0x60000000 +#define SFC_IPV6_HOP_LIMITS_DEF 0xff +#define SFC_VXLAN_FLAGS_DEF 0x08000000 + +static int +sfc_mae_rule_parse_action_vxlan_encap( + struct sfc_mae *mae, + const struct rte_flow_action_vxlan_encap *conf, + efx_mae_actions_t *spec, + struct rte_flow_error *error) +{ + struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh; + struct rte_flow_item *pattern = conf->definition; + uint8_t *buf = bounce_eh->buf; + + /* This array will keep track of non-VOID pattern items. */ + struct sfc_mae_parsed_item parsed_items[1 /* Ethernet */ + + 2 /* VLAN tags */ + + 1 /* IPv4 or IPv6 */ + + 1 /* UDP */ + + 1 /* VXLAN */]; + unsigned int nb_parsed_items = 0; + + size_t eth_ethertype_ofst = offsetof(struct rte_ether_hdr, ether_type); + uint8_t dummy_buf[RTE_MAX(sizeof(struct rte_ipv4_hdr), + sizeof(struct rte_ipv6_hdr))]; + struct rte_ipv4_hdr *ipv4 = (void *)dummy_buf; + struct rte_ipv6_hdr *ipv6 = (void *)dummy_buf; + struct rte_vxlan_hdr *vxlan = NULL; + struct rte_udp_hdr *udp = NULL; + unsigned int nb_vlan_tags = 0; + size_t next_proto_ofst = 0; + size_t ethertype_ofst = 0; + uint64_t exp_items; + + if (pattern == NULL) { + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "The encap. header definition is NULL"); + } + + bounce_eh->type = EFX_TUNNEL_PROTOCOL_VXLAN; + bounce_eh->size = 0; + + /* + * Process pattern items and remember non-VOID ones. + * Defer applying masks until after the complete header + * has been built from the pattern items. + */ + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_ETH); + + for (; pattern->type != RTE_FLOW_ITEM_TYPE_END; ++pattern) { + struct sfc_mae_parsed_item *parsed_item; + const uint64_t exp_items_extra_vlan[] = { + RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN), 0 + }; + size_t proto_header_size; + rte_be16_t *ethertypep; + uint8_t *next_protop; + uint8_t *buf_cur; + + if (pattern->spec == NULL) { + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "NULL item spec in the encap. header"); + } + + if (pattern->mask == NULL) { + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "NULL item mask in the encap. header"); + } + + if (pattern->last != NULL) { + /* This is not a match pattern, so disallow range. */ + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "Range item in the encap. header"); + } + + if (pattern->type == RTE_FLOW_ITEM_TYPE_VOID) { + /* Handle VOID separately, for clarity. */ + continue; + } + + if ((exp_items & RTE_BIT64(pattern->type)) == 0) { + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "Unexpected item in the encap. header"); + } + + parsed_item = &parsed_items[nb_parsed_items]; + buf_cur = buf + bounce_eh->size; + + switch (pattern->type) { + case RTE_FLOW_ITEM_TYPE_ETH: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_ETH, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_eth, + hdr) != 0); + + proto_header_size = sizeof(struct rte_ether_hdr); + + ethertype_ofst = eth_ethertype_ofst; + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN) | + RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) | + RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6); + break; + case RTE_FLOW_ITEM_TYPE_VLAN: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VLAN, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vlan, + hdr) != 0); + + proto_header_size = sizeof(struct rte_vlan_hdr); + + ethertypep = RTE_PTR_ADD(buf, eth_ethertype_ofst); + *ethertypep = RTE_BE16(RTE_ETHER_TYPE_QINQ); + + ethertypep = RTE_PTR_ADD(buf, ethertype_ofst); + *ethertypep = RTE_BE16(RTE_ETHER_TYPE_VLAN); + + ethertype_ofst = + bounce_eh->size + + offsetof(struct rte_vlan_hdr, eth_proto); + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) | + RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6); + exp_items |= exp_items_extra_vlan[nb_vlan_tags]; + + ++nb_vlan_tags; + break; + case RTE_FLOW_ITEM_TYPE_IPV4: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV4, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv4, + hdr) != 0); + + proto_header_size = sizeof(struct rte_ipv4_hdr); + + ethertypep = RTE_PTR_ADD(buf, ethertype_ofst); + *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV4); + + next_proto_ofst = + bounce_eh->size + + offsetof(struct rte_ipv4_hdr, next_proto_id); + + ipv4 = (struct rte_ipv4_hdr *)buf_cur; + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP); + break; + case RTE_FLOW_ITEM_TYPE_IPV6: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV6, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv6, + hdr) != 0); + + proto_header_size = sizeof(struct rte_ipv6_hdr); + + ethertypep = RTE_PTR_ADD(buf, ethertype_ofst); + *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV6); + + next_proto_ofst = bounce_eh->size + + offsetof(struct rte_ipv6_hdr, proto); + + ipv6 = (struct rte_ipv6_hdr *)buf_cur; + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP); + break; + case RTE_FLOW_ITEM_TYPE_UDP: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_UDP, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_udp, + hdr) != 0); + + proto_header_size = sizeof(struct rte_udp_hdr); + + next_protop = RTE_PTR_ADD(buf, next_proto_ofst); + *next_protop = IPPROTO_UDP; + + udp = (struct rte_udp_hdr *)buf_cur; + + exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VXLAN); + break; + case RTE_FLOW_ITEM_TYPE_VXLAN: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VXLAN, + exp_items); + RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vxlan, + hdr) != 0); + + proto_header_size = sizeof(struct rte_vxlan_hdr); + + vxlan = (struct rte_vxlan_hdr *)buf_cur; + + udp->dst_port = RTE_BE16(RTE_VXLAN_DEFAULT_PORT); + udp->dgram_len = RTE_BE16(sizeof(*udp) + + sizeof(*vxlan)); + udp->dgram_cksum = 0; + + exp_items = 0; + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "Unknown item in the encap. header"); + } + + if (bounce_eh->size + proto_header_size > bounce_eh->buf_size) { + return rte_flow_error_set(error, E2BIG, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "The encap. header is too big"); + } + + if ((proto_header_size & 1) != 0) { + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "Odd layer size in the encap. header"); + } + + rte_memcpy(buf_cur, pattern->spec, proto_header_size); + bounce_eh->size += proto_header_size; + + parsed_item->item = pattern; + parsed_item->proto_header_size = proto_header_size; + ++nb_parsed_items; + } + + if (exp_items != 0) { + /* Parsing item VXLAN would have reset exp_items to 0. */ + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "No item VXLAN in the encap. header"); + } + + /* One of the pointers (ipv4, ipv6) refers to a dummy area. */ + ipv4->version_ihl = RTE_IPV4_VHL_DEF; + ipv4->time_to_live = SFC_IPV4_TTL_DEF; + ipv4->total_length = RTE_BE16(sizeof(*ipv4) + sizeof(*udp) + + sizeof(*vxlan)); + /* The HW cannot compute this checksum. */ + ipv4->hdr_checksum = 0; + ipv4->hdr_checksum = rte_ipv4_cksum(ipv4); + + ipv6->vtc_flow = RTE_BE32(SFC_IPV6_VTC_FLOW_DEF); + ipv6->hop_limits = SFC_IPV6_HOP_LIMITS_DEF; + ipv6->payload_len = udp->dgram_len; + + vxlan->vx_flags = RTE_BE32(SFC_VXLAN_FLAGS_DEF); + + /* Take care of the masks. */ + sfc_mae_header_force_item_masks(buf, parsed_items, nb_parsed_items); + + return (spec != NULL) ? efx_mae_action_set_populate_encap(spec) : 0; +} + static int sfc_mae_rule_parse_action_mark(const struct rte_flow_action_mark *conf, efx_mae_actions_t *spec) @@ -2016,6 +2505,7 @@ sfc_mae_rule_parse_action(struct sfc_adapter *sa, efx_mae_actions_t *spec, struct rte_flow_error *error) { + bool custom_error = B_FALSE; int rc = 0; switch (action->type) { @@ -2039,6 +2529,14 @@ sfc_mae_rule_parse_action(struct sfc_adapter *sa, bundle->actions_mask); sfc_mae_rule_parse_action_of_set_vlan_pcp(action->conf, bundle); break; + case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP: + SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP, + bundle->actions_mask); + rc = sfc_mae_rule_parse_action_vxlan_encap(&sa->mae, + action->conf, + spec, error); + custom_error = B_TRUE; + break; case RTE_FLOW_ACTION_TYPE_FLAG: SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_FLAG, bundle->actions_mask); @@ -2080,24 +2578,49 @@ sfc_mae_rule_parse_action(struct sfc_adapter *sa, "Unsupported action"); } - if (rc != 0) { + if (rc == 0) { + bundle->actions_mask |= (1ULL << action->type); + } else if (!custom_error) { rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION, NULL, "Failed to request the action"); - } else { - bundle->actions_mask |= (1ULL << action->type); } return rc; } +static void +sfc_mae_bounce_eh_invalidate(struct sfc_mae_bounce_eh *bounce_eh) +{ + bounce_eh->type = EFX_TUNNEL_PROTOCOL_NONE; +} + +static int +sfc_mae_process_encap_header(struct sfc_adapter *sa, + const struct sfc_mae_bounce_eh *bounce_eh, + struct sfc_mae_encap_header **encap_headerp) +{ + if (bounce_eh->type == EFX_TUNNEL_PROTOCOL_NONE) { + encap_headerp = NULL; + return 0; + } + + *encap_headerp = sfc_mae_encap_header_attach(sa, bounce_eh); + if (*encap_headerp != NULL) + return 0; + + return sfc_mae_encap_header_add(sa, bounce_eh, encap_headerp); +} + int sfc_mae_rule_parse_actions(struct sfc_adapter *sa, const struct rte_flow_action actions[], struct sfc_flow_spec_mae *spec_mae, struct rte_flow_error *error) { + struct sfc_mae_encap_header *encap_header = NULL; struct sfc_mae_actions_bundle bundle = {0}; const struct rte_flow_action *action; + struct sfc_mae *mae = &sa->mae; efx_mae_actions_t *spec; int rc; @@ -2111,6 +2634,9 @@ sfc_mae_rule_parse_actions(struct sfc_adapter *sa, if (rc != 0) goto fail_action_set_spec_init; + /* Cleanup after previous encap. header bounce buffer usage. */ + sfc_mae_bounce_eh_invalidate(&mae->bounce_eh); + for (action = actions; action->type != RTE_FLOW_ACTION_TYPE_END; ++action) { rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error); @@ -2127,19 +2653,29 @@ sfc_mae_rule_parse_actions(struct sfc_adapter *sa, if (rc != 0) goto fail_rule_parse_action; - spec_mae->action_set = sfc_mae_action_set_attach(sa, spec); + rc = sfc_mae_process_encap_header(sa, &mae->bounce_eh, &encap_header); + if (rc != 0) + goto fail_process_encap_header; + + spec_mae->action_set = sfc_mae_action_set_attach(sa, encap_header, + spec); if (spec_mae->action_set != NULL) { + sfc_mae_encap_header_del(sa, encap_header); efx_mae_action_set_spec_fini(sa->nic, spec); return 0; } - rc = sfc_mae_action_set_add(sa, spec, &spec_mae->action_set); + rc = sfc_mae_action_set_add(sa, spec, encap_header, + &spec_mae->action_set); if (rc != 0) goto fail_action_set_add; return 0; fail_action_set_add: + sfc_mae_encap_header_del(sa, encap_header); + +fail_process_encap_header: fail_rule_parse_action: efx_mae_action_set_spec_fini(sa->nic, spec); diff --git a/drivers/net/sfc/sfc_mae.h b/drivers/net/sfc/sfc_mae.h index 379055b87a..9740e54e49 100644 --- a/drivers/net/sfc/sfc_mae.h +++ b/drivers/net/sfc/sfc_mae.h @@ -27,6 +27,7 @@ struct sfc_mae_fw_rsrc { union { efx_mae_aset_id_t aset_id; efx_mae_rule_id_t rule_id; + efx_mae_eh_id_t eh_id; }; }; @@ -41,11 +42,24 @@ struct sfc_mae_outer_rule { TAILQ_HEAD(sfc_mae_outer_rules, sfc_mae_outer_rule); +/** Encap. header registry entry */ +struct sfc_mae_encap_header { + TAILQ_ENTRY(sfc_mae_encap_header) entries; + unsigned int refcnt; + uint8_t *buf; + size_t size; + efx_tunnel_protocol_t type; + struct sfc_mae_fw_rsrc fw_rsrc; +}; + +TAILQ_HEAD(sfc_mae_encap_headers, sfc_mae_encap_header); + /** Action set registry entry */ struct sfc_mae_action_set { TAILQ_ENTRY(sfc_mae_action_set) entries; unsigned int refcnt; efx_mae_actions_t *spec; + struct sfc_mae_encap_header *encap_header; struct sfc_mae_fw_rsrc fw_rsrc; }; @@ -58,6 +72,17 @@ enum sfc_mae_status { SFC_MAE_STATUS_SUPPORTED }; +/* + * Encap. header bounce buffer. It is used to store header data + * when parsing the header definition in the action VXLAN_ENCAP. + */ +struct sfc_mae_bounce_eh { + uint8_t *buf; + size_t buf_size; + size_t size; + efx_tunnel_protocol_t type; +}; + struct sfc_mae { /** Assigned switch domain identifier */ uint16_t switch_domain_id; @@ -73,8 +98,12 @@ struct sfc_mae { uint32_t encap_types_supported; /** Outer rule registry */ struct sfc_mae_outer_rules outer_rules; + /** Encap. header registry */ + struct sfc_mae_encap_headers encap_headers; /** Action set registry */ struct sfc_mae_action_sets action_sets; + /** Encap. header bounce buffer */ + struct sfc_mae_bounce_eh bounce_eh; }; struct sfc_adapter;