/*- * BSD LICENSE * * Copyright 2016 6WIND S.A. * Copyright 2016 Mellanox. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name of 6WIND S.A. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include /* Verbs header. */ /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ #ifdef PEDANTIC #pragma GCC diagnostic ignored "-Wpedantic" #endif #include #ifdef PEDANTIC #pragma GCC diagnostic error "-Wpedantic" #endif #include #include #include #include #include "mlx5.h" #include "mlx5_prm.h" /* Number of Work Queue necessary for the DROP queue. */ #define MLX5_DROP_WQ_N 4 static int mlx5_flow_create_eth(const struct rte_flow_item *item, const void *default_mask, void *data); static int mlx5_flow_create_vlan(const struct rte_flow_item *item, const void *default_mask, void *data); static int mlx5_flow_create_ipv4(const struct rte_flow_item *item, const void *default_mask, void *data); static int mlx5_flow_create_ipv6(const struct rte_flow_item *item, const void *default_mask, void *data); static int mlx5_flow_create_udp(const struct rte_flow_item *item, const void *default_mask, void *data); static int mlx5_flow_create_tcp(const struct rte_flow_item *item, const void *default_mask, void *data); static int mlx5_flow_create_vxlan(const struct rte_flow_item *item, const void *default_mask, void *data); struct rte_flow { TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */ struct ibv_exp_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */ struct ibv_exp_rwq_ind_table *ind_table; /**< Indirection table. */ struct ibv_qp *qp; /**< Verbs queue pair. */ struct ibv_exp_flow *ibv_flow; /**< Verbs flow. */ struct ibv_exp_wq *wq; /**< Verbs work queue. */ struct ibv_cq *cq; /**< Verbs completion queue. */ uint16_t rxqs_n; /**< Number of queues in this flow, 0 if drop queue. */ uint32_t mark:1; /**< Set if the flow is marked. */ uint32_t drop:1; /**< Drop queue. */ uint64_t hash_fields; /**< Fields that participate in the hash. */ struct rxq *rxqs[]; /**< Pointer to the queues array. */ }; /** Static initializer for items. */ #define ITEMS(...) \ (const enum rte_flow_item_type []){ \ __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \ } /** Structure to generate a simple graph of layers supported by the NIC. */ struct mlx5_flow_items { /** List of possible actions for these items. */ const enum rte_flow_action_type *const actions; /** Bit-masks corresponding to the possibilities for the item. */ const void *mask; /** * Default bit-masks to use when item->mask is not provided. When * \default_mask is also NULL, the full supported bit-mask (\mask) is * used instead. */ const void *default_mask; /** Bit-masks size in bytes. */ const unsigned int mask_sz; /** * Conversion function from rte_flow to NIC specific flow. * * @param item * rte_flow item to convert. * @param default_mask * Default bit-masks to use when item->mask is not provided. * @param data * Internal structure to store the conversion. * * @return * 0 on success, negative value otherwise. */ int (*convert)(const struct rte_flow_item *item, const void *default_mask, void *data); /** Size in bytes of the destination structure. */ const unsigned int dst_sz; /** List of possible following items. */ const enum rte_flow_item_type *const items; }; /** Valid action for this PMD. */ static const enum rte_flow_action_type valid_actions[] = { RTE_FLOW_ACTION_TYPE_DROP, RTE_FLOW_ACTION_TYPE_QUEUE, RTE_FLOW_ACTION_TYPE_MARK, RTE_FLOW_ACTION_TYPE_FLAG, RTE_FLOW_ACTION_TYPE_END, }; /** Graph of supported items and associated actions. */ static const struct mlx5_flow_items mlx5_flow_items[] = { [RTE_FLOW_ITEM_TYPE_END] = { .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH, RTE_FLOW_ITEM_TYPE_VXLAN), }, [RTE_FLOW_ITEM_TYPE_ETH] = { .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN, RTE_FLOW_ITEM_TYPE_IPV4, RTE_FLOW_ITEM_TYPE_IPV6), .actions = valid_actions, .mask = &(const struct rte_flow_item_eth){ .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff", .src.addr_bytes = "\xff\xff\xff\xff\xff\xff", .type = -1, }, .default_mask = &rte_flow_item_eth_mask, .mask_sz = sizeof(struct rte_flow_item_eth), .convert = mlx5_flow_create_eth, .dst_sz = sizeof(struct ibv_exp_flow_spec_eth), }, [RTE_FLOW_ITEM_TYPE_VLAN] = { .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4, RTE_FLOW_ITEM_TYPE_IPV6), .actions = valid_actions, .mask = &(const struct rte_flow_item_vlan){ .tci = -1, }, .default_mask = &rte_flow_item_vlan_mask, .mask_sz = sizeof(struct rte_flow_item_vlan), .convert = mlx5_flow_create_vlan, .dst_sz = 0, }, [RTE_FLOW_ITEM_TYPE_IPV4] = { .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP, RTE_FLOW_ITEM_TYPE_TCP), .actions = valid_actions, .mask = &(const struct rte_flow_item_ipv4){ .hdr = { .src_addr = -1, .dst_addr = -1, .type_of_service = -1, .next_proto_id = -1, }, }, .default_mask = &rte_flow_item_ipv4_mask, .mask_sz = sizeof(struct rte_flow_item_ipv4), .convert = mlx5_flow_create_ipv4, .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv4_ext), }, [RTE_FLOW_ITEM_TYPE_IPV6] = { .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP, RTE_FLOW_ITEM_TYPE_TCP), .actions = valid_actions, .mask = &(const struct rte_flow_item_ipv6){ .hdr = { .src_addr = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }, .dst_addr = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }, .vtc_flow = -1, .proto = -1, .hop_limits = -1, }, }, .default_mask = &rte_flow_item_ipv6_mask, .mask_sz = sizeof(struct rte_flow_item_ipv6), .convert = mlx5_flow_create_ipv6, .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv6_ext), }, [RTE_FLOW_ITEM_TYPE_UDP] = { .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN), .actions = valid_actions, .mask = &(const struct rte_flow_item_udp){ .hdr = { .src_port = -1, .dst_port = -1, }, }, .default_mask = &rte_flow_item_udp_mask, .mask_sz = sizeof(struct rte_flow_item_udp), .convert = mlx5_flow_create_udp, .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp), }, [RTE_FLOW_ITEM_TYPE_TCP] = { .actions = valid_actions, .mask = &(const struct rte_flow_item_tcp){ .hdr = { .src_port = -1, .dst_port = -1, }, }, .default_mask = &rte_flow_item_tcp_mask, .mask_sz = sizeof(struct rte_flow_item_tcp), .convert = mlx5_flow_create_tcp, .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp), }, [RTE_FLOW_ITEM_TYPE_VXLAN] = { .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH), .actions = valid_actions, .mask = &(const struct rte_flow_item_vxlan){ .vni = "\xff\xff\xff", }, .default_mask = &rte_flow_item_vxlan_mask, .mask_sz = sizeof(struct rte_flow_item_vxlan), .convert = mlx5_flow_create_vxlan, .dst_sz = sizeof(struct ibv_exp_flow_spec_tunnel), }, }; /** Structure to pass to the conversion function. */ struct mlx5_flow { struct ibv_exp_flow_attr *ibv_attr; /**< Verbs attribute. */ unsigned int offset; /**< Offset in bytes in the ibv_attr buffer. */ uint32_t inner; /**< Set once VXLAN is encountered. */ uint64_t hash_fields; /**< Fields that participate in the hash. */ }; /** Structure for Drop queue. */ struct rte_flow_drop { struct ibv_exp_rwq_ind_table *ind_table; /**< Indirection table. */ struct ibv_qp *qp; /**< Verbs queue pair. */ struct ibv_exp_wq *wqs[MLX5_DROP_WQ_N]; /**< Verbs work queue. */ struct ibv_cq *cq; /**< Verbs completion queue. */ }; struct mlx5_flow_action { uint32_t queue:1; /**< Target is a receive queue. */ uint32_t drop:1; /**< Target is a drop queue. */ uint32_t mark:1; /**< Mark is present in the flow. */ uint32_t mark_id; /**< Mark identifier. */ uint16_t queues[RTE_MAX_QUEUES_PER_PORT]; /**< Queues indexes to use. */ uint16_t queues_n; /**< Number of entries in queue[]. */ }; /** * Check support for a given item. * * @param item[in] * Item specification. * @param mask[in] * Bit-masks covering supported fields to compare with spec, last and mask in * \item. * @param size * Bit-Mask size in bytes. * * @return * 0 on success. */ static int mlx5_flow_item_validate(const struct rte_flow_item *item, const uint8_t *mask, unsigned int size) { int ret = 0; if (!item->spec && (item->mask || item->last)) return -1; if (item->spec && !item->mask) { unsigned int i; const uint8_t *spec = item->spec; for (i = 0; i < size; ++i) if ((spec[i] | mask[i]) != mask[i]) return -1; } if (item->last && !item->mask) { unsigned int i; const uint8_t *spec = item->last; for (i = 0; i < size; ++i) if ((spec[i] | mask[i]) != mask[i]) return -1; } if (item->mask) { unsigned int i; const uint8_t *spec = item->mask; for (i = 0; i < size; ++i) if ((spec[i] | mask[i]) != mask[i]) return -1; } if (item->spec && item->last) { uint8_t spec[size]; uint8_t last[size]; const uint8_t *apply = mask; unsigned int i; if (item->mask) apply = item->mask; for (i = 0; i < size; ++i) { spec[i] = ((const uint8_t *)item->spec)[i] & apply[i]; last[i] = ((const uint8_t *)item->last)[i] & apply[i]; } ret = memcmp(spec, last, size); } return ret; } /** * Validate a flow supported by the NIC. * * @param priv * Pointer to private structure. * @param[in] attr * Flow rule attributes. * @param[in] pattern * Pattern specification (list terminated by the END pattern item). * @param[in] actions * Associated actions (list terminated by the END action). * @param[out] error * Perform verbose error reporting if not NULL. * @param[in, out] flow * Flow structure to update. * @param[in, out] action * Action structure to update. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int priv_flow_validate(struct priv *priv, const struct rte_flow_attr *attr, const struct rte_flow_item items[], const struct rte_flow_action actions[], struct rte_flow_error *error, struct mlx5_flow *flow, struct mlx5_flow_action *action) { const struct mlx5_flow_items *cur_item = mlx5_flow_items; (void)priv; if (attr->group) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR_GROUP, NULL, "groups are not supported"); return -rte_errno; } if (attr->priority) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, NULL, "priorities are not supported"); return -rte_errno; } if (attr->egress) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL, "egress is not supported"); return -rte_errno; } if (!attr->ingress) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, NULL, "only ingress is supported"); return -rte_errno; } for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) { const struct mlx5_flow_items *token = NULL; unsigned int i; int err; if (items->type == RTE_FLOW_ITEM_TYPE_VOID) continue; for (i = 0; cur_item->items && cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END; ++i) { if (cur_item->items[i] == items->type) { token = &mlx5_flow_items[items->type]; break; } } if (!token) goto exit_item_not_supported; cur_item = token; err = mlx5_flow_item_validate(items, (const uint8_t *)cur_item->mask, cur_item->mask_sz); if (err) goto exit_item_not_supported; if (flow->ibv_attr && cur_item->convert) { err = cur_item->convert(items, (cur_item->default_mask ? cur_item->default_mask : cur_item->mask), flow); if (err) goto exit_item_not_supported; } else if (items->type == RTE_FLOW_ITEM_TYPE_VXLAN) { if (flow->inner) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, items, "cannot recognize multiple" " VXLAN encapsulations"); return -rte_errno; } flow->inner = 1; } flow->offset += cur_item->dst_sz; } for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) { if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) { continue; } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) { action->drop = 1; } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) { const struct rte_flow_action_queue *queue = (const struct rte_flow_action_queue *) actions->conf; uint16_t n; uint16_t found = 0; if (!queue || (queue->index > (priv->rxqs_n - 1))) goto exit_action_not_supported; for (n = 0; n < action->queues_n; ++n) { if (action->queues[n] == queue->index) { found = 1; break; } } if (action->queues_n > 1 && !found) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, actions, "queue action not in RSS queues"); return -rte_errno; } if (!found) { action->queue = 1; action->queues_n = 1; action->queues[0] = queue->index; } } else if (actions->type == RTE_FLOW_ACTION_TYPE_RSS) { const struct rte_flow_action_rss *rss = (const struct rte_flow_action_rss *) actions->conf; uint16_t n; if (!rss || !rss->num) { rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION, actions, "no valid queues"); return -rte_errno; } if (action->queues_n == 1) { uint16_t found = 0; assert(action->queues_n); for (n = 0; n < rss->num; ++n) { if (action->queues[0] == rss->queue[n]) { found = 1; break; } } if (!found) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, actions, "queue action not in RSS" " queues"); return -rte_errno; } } for (n = 0; n < rss->num; ++n) { if (rss->queue[n] >= priv->rxqs_n) { rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION, actions, "queue id > number of" " queues"); return -rte_errno; } } action->queue = 1; for (n = 0; n < rss->num; ++n) action->queues[n] = rss->queue[n]; action->queues_n = rss->num; } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) { const struct rte_flow_action_mark *mark = (const struct rte_flow_action_mark *) actions->conf; if (!mark) { rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION, actions, "mark must be defined"); return -rte_errno; } else if (mark->id >= MLX5_FLOW_MARK_MAX) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, actions, "mark must be between 0" " and 16777199"); return -rte_errno; } action->mark = 1; action->mark_id = mark->id; } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) { action->mark = 1; } else { goto exit_action_not_supported; } } if (action->mark && !flow->ibv_attr && !action->drop) flow->offset += sizeof(struct ibv_exp_flow_spec_action_tag); if (!action->queue && !action->drop) { rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "no valid action"); return -rte_errno; } return 0; exit_item_not_supported: rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, items, "item not supported"); return -rte_errno; exit_action_not_supported: rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, actions, "action not supported"); return -rte_errno; } /** * Validate a flow supported by the NIC. * * @see rte_flow_validate() * @see rte_flow_ops */ int mlx5_flow_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr, const struct rte_flow_item items[], const struct rte_flow_action actions[], struct rte_flow_error *error) { struct priv *priv = dev->data->dev_private; int ret; struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr) }; struct mlx5_flow_action action = { .queue = 0, .drop = 0, .mark = 0, .mark_id = MLX5_FLOW_MARK_DEFAULT, .queues_n = 0, }; priv_lock(priv); ret = priv_flow_validate(priv, attr, items, actions, error, &flow, &action); priv_unlock(priv); return ret; } /** * Convert Ethernet item to Verbs specification. * * @param item[in] * Item specification. * @param default_mask[in] * Default bit-masks to use when item->mask is not provided. * @param data[in, out] * User structure. */ static int mlx5_flow_create_eth(const struct rte_flow_item *item, const void *default_mask, void *data) { const struct rte_flow_item_eth *spec = item->spec; const struct rte_flow_item_eth *mask = item->mask; struct mlx5_flow *flow = (struct mlx5_flow *)data; struct ibv_exp_flow_spec_eth *eth; const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth); unsigned int i; ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 2; flow->hash_fields = 0; eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *eth = (struct ibv_exp_flow_spec_eth) { .type = flow->inner | IBV_EXP_FLOW_SPEC_ETH, .size = eth_size, }; if (!spec) return 0; if (!mask) mask = default_mask; memcpy(eth->val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN); memcpy(eth->val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN); eth->val.ether_type = spec->type; memcpy(eth->mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN); memcpy(eth->mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN); eth->mask.ether_type = mask->type; /* Remove unwanted bits from values. */ for (i = 0; i < ETHER_ADDR_LEN; ++i) { eth->val.dst_mac[i] &= eth->mask.dst_mac[i]; eth->val.src_mac[i] &= eth->mask.src_mac[i]; } eth->val.ether_type &= eth->mask.ether_type; return 0; } /** * Convert VLAN item to Verbs specification. * * @param item[in] * Item specification. * @param default_mask[in] * Default bit-masks to use when item->mask is not provided. * @param data[in, out] * User structure. */ static int mlx5_flow_create_vlan(const struct rte_flow_item *item, const void *default_mask, void *data) { const struct rte_flow_item_vlan *spec = item->spec; const struct rte_flow_item_vlan *mask = item->mask; struct mlx5_flow *flow = (struct mlx5_flow *)data; struct ibv_exp_flow_spec_eth *eth; const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth); eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset - eth_size); if (!spec) return 0; if (!mask) mask = default_mask; eth->val.vlan_tag = spec->tci; eth->mask.vlan_tag = mask->tci; eth->val.vlan_tag &= eth->mask.vlan_tag; return 0; } /** * Convert IPv4 item to Verbs specification. * * @param item[in] * Item specification. * @param default_mask[in] * Default bit-masks to use when item->mask is not provided. * @param data[in, out] * User structure. */ static int mlx5_flow_create_ipv4(const struct rte_flow_item *item, const void *default_mask, void *data) { const struct rte_flow_item_ipv4 *spec = item->spec; const struct rte_flow_item_ipv4 *mask = item->mask; struct mlx5_flow *flow = (struct mlx5_flow *)data; struct ibv_exp_flow_spec_ipv4_ext *ipv4; unsigned int ipv4_size = sizeof(struct ibv_exp_flow_spec_ipv4_ext); ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 1; flow->hash_fields = (IBV_EXP_RX_HASH_SRC_IPV4 | IBV_EXP_RX_HASH_DST_IPV4); ipv4 = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *ipv4 = (struct ibv_exp_flow_spec_ipv4_ext) { .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV4_EXT, .size = ipv4_size, }; if (!spec) return 0; if (!mask) mask = default_mask; ipv4->val = (struct ibv_exp_flow_ipv4_ext_filter){ .src_ip = spec->hdr.src_addr, .dst_ip = spec->hdr.dst_addr, .proto = spec->hdr.next_proto_id, .tos = spec->hdr.type_of_service, }; ipv4->mask = (struct ibv_exp_flow_ipv4_ext_filter){ .src_ip = mask->hdr.src_addr, .dst_ip = mask->hdr.dst_addr, .proto = mask->hdr.next_proto_id, .tos = mask->hdr.type_of_service, }; /* Remove unwanted bits from values. */ ipv4->val.src_ip &= ipv4->mask.src_ip; ipv4->val.dst_ip &= ipv4->mask.dst_ip; ipv4->val.proto &= ipv4->mask.proto; ipv4->val.tos &= ipv4->mask.tos; return 0; } /** * Convert IPv6 item to Verbs specification. * * @param item[in] * Item specification. * @param default_mask[in] * Default bit-masks to use when item->mask is not provided. * @param data[in, out] * User structure. */ static int mlx5_flow_create_ipv6(const struct rte_flow_item *item, const void *default_mask, void *data) { const struct rte_flow_item_ipv6 *spec = item->spec; const struct rte_flow_item_ipv6 *mask = item->mask; struct mlx5_flow *flow = (struct mlx5_flow *)data; struct ibv_exp_flow_spec_ipv6_ext *ipv6; unsigned int ipv6_size = sizeof(struct ibv_exp_flow_spec_ipv6_ext); unsigned int i; ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 1; flow->hash_fields = (IBV_EXP_RX_HASH_SRC_IPV6 | IBV_EXP_RX_HASH_DST_IPV6); ipv6 = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *ipv6 = (struct ibv_exp_flow_spec_ipv6_ext) { .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV6_EXT, .size = ipv6_size, }; if (!spec) return 0; if (!mask) mask = default_mask; memcpy(ipv6->val.src_ip, spec->hdr.src_addr, RTE_DIM(ipv6->val.src_ip)); memcpy(ipv6->val.dst_ip, spec->hdr.dst_addr, RTE_DIM(ipv6->val.dst_ip)); memcpy(ipv6->mask.src_ip, mask->hdr.src_addr, RTE_DIM(ipv6->mask.src_ip)); memcpy(ipv6->mask.dst_ip, mask->hdr.dst_addr, RTE_DIM(ipv6->mask.dst_ip)); ipv6->mask.flow_label = mask->hdr.vtc_flow; ipv6->mask.next_hdr = mask->hdr.proto; ipv6->mask.hop_limit = mask->hdr.hop_limits; /* Remove unwanted bits from values. */ for (i = 0; i < RTE_DIM(ipv6->val.src_ip); ++i) { ipv6->val.src_ip[i] &= ipv6->mask.src_ip[i]; ipv6->val.dst_ip[i] &= ipv6->mask.dst_ip[i]; } ipv6->val.flow_label &= ipv6->mask.flow_label; ipv6->val.next_hdr &= ipv6->mask.next_hdr; ipv6->val.hop_limit &= ipv6->mask.hop_limit; return 0; } /** * Convert UDP item to Verbs specification. * * @param item[in] * Item specification. * @param default_mask[in] * Default bit-masks to use when item->mask is not provided. * @param data[in, out] * User structure. */ static int mlx5_flow_create_udp(const struct rte_flow_item *item, const void *default_mask, void *data) { const struct rte_flow_item_udp *spec = item->spec; const struct rte_flow_item_udp *mask = item->mask; struct mlx5_flow *flow = (struct mlx5_flow *)data; struct ibv_exp_flow_spec_tcp_udp *udp; unsigned int udp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp); ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 0; flow->hash_fields |= (IBV_EXP_RX_HASH_SRC_PORT_UDP | IBV_EXP_RX_HASH_DST_PORT_UDP); udp = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *udp = (struct ibv_exp_flow_spec_tcp_udp) { .type = flow->inner | IBV_EXP_FLOW_SPEC_UDP, .size = udp_size, }; if (!spec) return 0; if (!mask) mask = default_mask; udp->val.dst_port = spec->hdr.dst_port; udp->val.src_port = spec->hdr.src_port; udp->mask.dst_port = mask->hdr.dst_port; udp->mask.src_port = mask->hdr.src_port; /* Remove unwanted bits from values. */ udp->val.src_port &= udp->mask.src_port; udp->val.dst_port &= udp->mask.dst_port; return 0; } /** * Convert TCP item to Verbs specification. * * @param item[in] * Item specification. * @param default_mask[in] * Default bit-masks to use when item->mask is not provided. * @param data[in, out] * User structure. */ static int mlx5_flow_create_tcp(const struct rte_flow_item *item, const void *default_mask, void *data) { const struct rte_flow_item_tcp *spec = item->spec; const struct rte_flow_item_tcp *mask = item->mask; struct mlx5_flow *flow = (struct mlx5_flow *)data; struct ibv_exp_flow_spec_tcp_udp *tcp; unsigned int tcp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp); ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 0; flow->hash_fields |= (IBV_EXP_RX_HASH_SRC_PORT_TCP | IBV_EXP_RX_HASH_DST_PORT_TCP); tcp = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *tcp = (struct ibv_exp_flow_spec_tcp_udp) { .type = flow->inner | IBV_EXP_FLOW_SPEC_TCP, .size = tcp_size, }; if (!spec) return 0; if (!mask) mask = default_mask; tcp->val.dst_port = spec->hdr.dst_port; tcp->val.src_port = spec->hdr.src_port; tcp->mask.dst_port = mask->hdr.dst_port; tcp->mask.src_port = mask->hdr.src_port; /* Remove unwanted bits from values. */ tcp->val.src_port &= tcp->mask.src_port; tcp->val.dst_port &= tcp->mask.dst_port; return 0; } /** * Convert VXLAN item to Verbs specification. * * @param item[in] * Item specification. * @param default_mask[in] * Default bit-masks to use when item->mask is not provided. * @param data[in, out] * User structure. */ static int mlx5_flow_create_vxlan(const struct rte_flow_item *item, const void *default_mask, void *data) { const struct rte_flow_item_vxlan *spec = item->spec; const struct rte_flow_item_vxlan *mask = item->mask; struct mlx5_flow *flow = (struct mlx5_flow *)data; struct ibv_exp_flow_spec_tunnel *vxlan; unsigned int size = sizeof(struct ibv_exp_flow_spec_tunnel); union vni { uint32_t vlan_id; uint8_t vni[4]; } id; ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 0; id.vni[0] = 0; vxlan = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *vxlan = (struct ibv_exp_flow_spec_tunnel) { .type = flow->inner | IBV_EXP_FLOW_SPEC_VXLAN_TUNNEL, .size = size, }; flow->inner = IBV_EXP_FLOW_SPEC_INNER; if (!spec) return 0; if (!mask) mask = default_mask; memcpy(&id.vni[1], spec->vni, 3); vxlan->val.tunnel_id = id.vlan_id; memcpy(&id.vni[1], mask->vni, 3); vxlan->mask.tunnel_id = id.vlan_id; /* Remove unwanted bits from values. */ vxlan->val.tunnel_id &= vxlan->mask.tunnel_id; return 0; } /** * Convert mark/flag action to Verbs specification. * * @param flow * Pointer to MLX5 flow structure. * @param mark_id * Mark identifier. */ static int mlx5_flow_create_flag_mark(struct mlx5_flow *flow, uint32_t mark_id) { struct ibv_exp_flow_spec_action_tag *tag; unsigned int size = sizeof(struct ibv_exp_flow_spec_action_tag); tag = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *tag = (struct ibv_exp_flow_spec_action_tag){ .type = IBV_EXP_FLOW_SPEC_ACTION_TAG, .size = size, .tag_id = mlx5_flow_mark_set(mark_id), }; ++flow->ibv_attr->num_of_specs; return 0; } /** * Complete flow rule creation with a drop queue. * * @param priv * Pointer to private structure. * @param flow * MLX5 flow attributes (filled by mlx5_flow_validate()). * @param[out] error * Perform verbose error reporting if not NULL. * * @return * A flow if the rule could be created. */ static struct rte_flow * priv_flow_create_action_queue_drop(struct priv *priv, struct mlx5_flow *flow, struct rte_flow_error *error) { struct rte_flow *rte_flow; assert(priv->pd); assert(priv->ctx); rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow), 0); if (!rte_flow) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "cannot allocate flow memory"); return NULL; } rte_flow->drop = 1; rte_flow->ibv_attr = flow->ibv_attr; rte_flow->qp = priv->flow_drop_queue->qp; if (!priv->started) return rte_flow; rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp, rte_flow->ibv_attr); if (!rte_flow->ibv_flow) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "flow rule creation failure"); goto error; } return rte_flow; error: assert(rte_flow); rte_free(rte_flow); return NULL; } /** * Complete flow rule creation. * * @param priv * Pointer to private structure. * @param flow * MLX5 flow attributes (filled by mlx5_flow_validate()). * @param action * Target action structure. * @param[out] error * Perform verbose error reporting if not NULL. * * @return * A flow if the rule could be created. */ static struct rte_flow * priv_flow_create_action_queue(struct priv *priv, struct mlx5_flow *flow, struct mlx5_flow_action *action, struct rte_flow_error *error) { struct rte_flow *rte_flow; unsigned int i; unsigned int j; const unsigned int wqs_n = 1 << log2above(action->queues_n); struct ibv_exp_wq *wqs[wqs_n]; assert(priv->pd); assert(priv->ctx); assert(!action->drop); rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow) + sizeof(*rte_flow->rxqs) * action->queues_n, 0); if (!rte_flow) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "cannot allocate flow memory"); return NULL; } for (i = 0; i < action->queues_n; ++i) { struct rxq_ctrl *rxq; rxq = container_of((*priv->rxqs)[action->queues[i]], struct rxq_ctrl, rxq); wqs[i] = rxq->wq; rte_flow->rxqs[i] = &rxq->rxq; ++rte_flow->rxqs_n; rxq->rxq.mark |= action->mark; } /* finalise indirection table. */ for (j = 0; i < wqs_n; ++i, ++j) { wqs[i] = wqs[j]; if (j == action->queues_n) j = 0; } rte_flow->mark = action->mark; rte_flow->ibv_attr = flow->ibv_attr; rte_flow->hash_fields = flow->hash_fields; rte_flow->ind_table = ibv_exp_create_rwq_ind_table( priv->ctx, &(struct ibv_exp_rwq_ind_table_init_attr){ .pd = priv->pd, .log_ind_tbl_size = log2above(action->queues_n), .ind_tbl = wqs, .comp_mask = 0, }); if (!rte_flow->ind_table) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "cannot allocate indirection table"); goto error; } rte_flow->qp = ibv_exp_create_qp( priv->ctx, &(struct ibv_exp_qp_init_attr){ .qp_type = IBV_QPT_RAW_PACKET, .comp_mask = IBV_EXP_QP_INIT_ATTR_PD | IBV_EXP_QP_INIT_ATTR_PORT | IBV_EXP_QP_INIT_ATTR_RX_HASH, .pd = priv->pd, .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){ .rx_hash_function = IBV_EXP_RX_HASH_FUNC_TOEPLITZ, .rx_hash_key_len = rss_hash_default_key_len, .rx_hash_key = rss_hash_default_key, .rx_hash_fields_mask = rte_flow->hash_fields, .rwq_ind_tbl = rte_flow->ind_table, }, .port_num = priv->port, }); if (!rte_flow->qp) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "cannot allocate QP"); goto error; } if (!priv->started) return rte_flow; rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp, rte_flow->ibv_attr); if (!rte_flow->ibv_flow) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "flow rule creation failure"); goto error; } return rte_flow; error: assert(rte_flow); if (rte_flow->qp) ibv_destroy_qp(rte_flow->qp); if (rte_flow->ind_table) ibv_exp_destroy_rwq_ind_table(rte_flow->ind_table); rte_free(rte_flow); return NULL; } /** * Convert a flow. * * @param priv * Pointer to private structure. * @param[in] attr * Flow rule attributes. * @param[in] pattern * Pattern specification (list terminated by the END pattern item). * @param[in] actions * Associated actions (list terminated by the END action). * @param[out] error * Perform verbose error reporting if not NULL. * * @return * A flow on success, NULL otherwise. */ static struct rte_flow * priv_flow_create(struct priv *priv, const struct rte_flow_attr *attr, const struct rte_flow_item items[], const struct rte_flow_action actions[], struct rte_flow_error *error) { struct rte_flow *rte_flow; struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr), }; struct mlx5_flow_action action = { .queue = 0, .drop = 0, .mark = 0, .mark_id = MLX5_FLOW_MARK_DEFAULT, .queues_n = 0, }; int err; err = priv_flow_validate(priv, attr, items, actions, error, &flow, &action); if (err) goto exit; flow.ibv_attr = rte_malloc(__func__, flow.offset, 0); flow.offset = sizeof(struct ibv_exp_flow_attr); if (!flow.ibv_attr) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "cannot allocate ibv_attr memory"); goto exit; } *flow.ibv_attr = (struct ibv_exp_flow_attr){ .type = IBV_EXP_FLOW_ATTR_NORMAL, .size = sizeof(struct ibv_exp_flow_attr), .priority = attr->priority, .num_of_specs = 0, .port = 0, .flags = 0, .reserved = 0, }; flow.inner = 0; flow.hash_fields = 0; claim_zero(priv_flow_validate(priv, attr, items, actions, error, &flow, &action)); if (action.mark && !action.drop) { mlx5_flow_create_flag_mark(&flow, action.mark_id); flow.offset += sizeof(struct ibv_exp_flow_spec_action_tag); } if (action.drop) rte_flow = priv_flow_create_action_queue_drop(priv, &flow, error); else rte_flow = priv_flow_create_action_queue(priv, &flow, &action, error); if (!rte_flow) goto exit; return rte_flow; exit: rte_free(flow.ibv_attr); return NULL; } /** * Create a flow. * * @see rte_flow_create() * @see rte_flow_ops */ struct rte_flow * mlx5_flow_create(struct rte_eth_dev *dev, const struct rte_flow_attr *attr, const struct rte_flow_item items[], const struct rte_flow_action actions[], struct rte_flow_error *error) { struct priv *priv = dev->data->dev_private; struct rte_flow *flow; priv_lock(priv); flow = priv_flow_create(priv, attr, items, actions, error); if (flow) { TAILQ_INSERT_TAIL(&priv->flows, flow, next); DEBUG("Flow created %p", (void *)flow); } priv_unlock(priv); return flow; } /** * Destroy a flow. * * @param priv * Pointer to private structure. * @param[in] flow * Flow to destroy. */ static void priv_flow_destroy(struct priv *priv, struct rte_flow *flow) { TAILQ_REMOVE(&priv->flows, flow, next); if (flow->ibv_flow) claim_zero(ibv_exp_destroy_flow(flow->ibv_flow)); if (flow->drop) goto free; if (flow->qp) claim_zero(ibv_destroy_qp(flow->qp)); if (flow->ind_table) claim_zero(ibv_exp_destroy_rwq_ind_table(flow->ind_table)); if (flow->drop && flow->wq) claim_zero(ibv_exp_destroy_wq(flow->wq)); if (flow->drop && flow->cq) claim_zero(ibv_destroy_cq(flow->cq)); if (flow->mark) { struct rte_flow *tmp; struct rxq *rxq; uint32_t mark_n = 0; uint32_t queue_n; /* * To remove the mark from the queue, the queue must not be * present in any other marked flow (RSS or not). */ for (queue_n = 0; queue_n < flow->rxqs_n; ++queue_n) { rxq = flow->rxqs[queue_n]; for (tmp = TAILQ_FIRST(&priv->flows); tmp; tmp = TAILQ_NEXT(tmp, next)) { uint32_t tqueue_n; if (tmp->drop) continue; for (tqueue_n = 0; tqueue_n < tmp->rxqs_n; ++tqueue_n) { struct rxq *trxq; trxq = tmp->rxqs[tqueue_n]; if (rxq == trxq) ++mark_n; } } rxq->mark = !!mark_n; } } free: rte_free(flow->ibv_attr); DEBUG("Flow destroyed %p", (void *)flow); rte_free(flow); } /** * Destroy a flow. * * @see rte_flow_destroy() * @see rte_flow_ops */ int mlx5_flow_destroy(struct rte_eth_dev *dev, struct rte_flow *flow, struct rte_flow_error *error) { struct priv *priv = dev->data->dev_private; (void)error; priv_lock(priv); priv_flow_destroy(priv, flow); priv_unlock(priv); return 0; } /** * Destroy all flows. * * @param priv * Pointer to private structure. */ static void priv_flow_flush(struct priv *priv) { while (!TAILQ_EMPTY(&priv->flows)) { struct rte_flow *flow; flow = TAILQ_FIRST(&priv->flows); priv_flow_destroy(priv, flow); } } /** * Destroy all flows. * * @see rte_flow_flush() * @see rte_flow_ops */ int mlx5_flow_flush(struct rte_eth_dev *dev, struct rte_flow_error *error) { struct priv *priv = dev->data->dev_private; (void)error; priv_lock(priv); priv_flow_flush(priv); priv_unlock(priv); return 0; } /** * Create drop queue. * * @param priv * Pointer to private structure. * * @return * 0 on success. */ static int priv_flow_create_drop_queue(struct priv *priv) { struct rte_flow_drop *fdq = NULL; unsigned int i; assert(priv->pd); assert(priv->ctx); fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0); if (!fdq) { WARN("cannot allocate memory for drop queue"); goto error; } fdq->cq = ibv_exp_create_cq(priv->ctx, 1, NULL, NULL, 0, &(struct ibv_exp_cq_init_attr){ .comp_mask = 0, }); if (!fdq->cq) { WARN("cannot allocate CQ for drop queue"); goto error; } for (i = 0; i != MLX5_DROP_WQ_N; ++i) { fdq->wqs[i] = ibv_exp_create_wq(priv->ctx, &(struct ibv_exp_wq_init_attr){ .wq_type = IBV_EXP_WQT_RQ, .max_recv_wr = 1, .max_recv_sge = 1, .pd = priv->pd, .cq = fdq->cq, }); if (!fdq->wqs[i]) { WARN("cannot allocate WQ for drop queue"); goto error; } } fdq->ind_table = ibv_exp_create_rwq_ind_table(priv->ctx, &(struct ibv_exp_rwq_ind_table_init_attr){ .pd = priv->pd, .log_ind_tbl_size = 0, .ind_tbl = fdq->wqs, .comp_mask = 0, }); if (!fdq->ind_table) { WARN("cannot allocate indirection table for drop queue"); goto error; } fdq->qp = ibv_exp_create_qp(priv->ctx, &(struct ibv_exp_qp_init_attr){ .qp_type = IBV_QPT_RAW_PACKET, .comp_mask = IBV_EXP_QP_INIT_ATTR_PD | IBV_EXP_QP_INIT_ATTR_PORT | IBV_EXP_QP_INIT_ATTR_RX_HASH, .pd = priv->pd, .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){ .rx_hash_function = IBV_EXP_RX_HASH_FUNC_TOEPLITZ, .rx_hash_key_len = rss_hash_default_key_len, .rx_hash_key = rss_hash_default_key, .rx_hash_fields_mask = 0, .rwq_ind_tbl = fdq->ind_table, }, .port_num = priv->port, }); if (!fdq->qp) { WARN("cannot allocate QP for drop queue"); goto error; } priv->flow_drop_queue = fdq; return 0; error: if (fdq->qp) claim_zero(ibv_destroy_qp(fdq->qp)); if (fdq->ind_table) claim_zero(ibv_exp_destroy_rwq_ind_table(fdq->ind_table)); for (i = 0; i != MLX5_DROP_WQ_N; ++i) { if (fdq->wqs[i]) claim_zero(ibv_exp_destroy_wq(fdq->wqs[i])); } if (fdq->cq) claim_zero(ibv_destroy_cq(fdq->cq)); if (fdq) rte_free(fdq); priv->flow_drop_queue = NULL; return -1; } /** * Delete drop queue. * * @param priv * Pointer to private structure. */ static void priv_flow_delete_drop_queue(struct priv *priv) { struct rte_flow_drop *fdq = priv->flow_drop_queue; unsigned int i; if (!fdq) return; if (fdq->qp) claim_zero(ibv_destroy_qp(fdq->qp)); if (fdq->ind_table) claim_zero(ibv_exp_destroy_rwq_ind_table(fdq->ind_table)); for (i = 0; i != MLX5_DROP_WQ_N; ++i) { if (fdq->wqs[i]) claim_zero(ibv_exp_destroy_wq(fdq->wqs[i])); } if (fdq->cq) claim_zero(ibv_destroy_cq(fdq->cq)); rte_free(fdq); priv->flow_drop_queue = NULL; } /** * Remove all flows. * * Called by dev_stop() to remove all flows. * * @param priv * Pointer to private structure. */ void priv_flow_stop(struct priv *priv) { struct rte_flow *flow; TAILQ_FOREACH_REVERSE(flow, &priv->flows, mlx5_flows, next) { claim_zero(ibv_exp_destroy_flow(flow->ibv_flow)); flow->ibv_flow = NULL; if (flow->mark) { unsigned int n; for (n = 0; n < flow->rxqs_n; ++n) flow->rxqs[n]->mark = 0; } DEBUG("Flow %p removed", (void *)flow); } priv_flow_delete_drop_queue(priv); } /** * Add all flows. * * @param priv * Pointer to private structure. * * @return * 0 on success, a errno value otherwise and rte_errno is set. */ int priv_flow_start(struct priv *priv) { int ret; struct rte_flow *flow; ret = priv_flow_create_drop_queue(priv); if (ret) return -1; TAILQ_FOREACH(flow, &priv->flows, next) { struct ibv_qp *qp; if (flow->drop) qp = priv->flow_drop_queue->qp; else qp = flow->qp; flow->ibv_flow = ibv_exp_create_flow(qp, flow->ibv_attr); if (!flow->ibv_flow) { DEBUG("Flow %p cannot be applied", (void *)flow); rte_errno = EINVAL; return rte_errno; } DEBUG("Flow %p applied", (void *)flow); if (flow->mark) { unsigned int n; for (n = 0; n < flow->rxqs_n; ++n) flow->rxqs[n]->mark = 1; } } return 0; } /** * Verify if the Rx queue is used in a flow. * * @param priv * Pointer to private structure. * @param rxq * Pointer to the queue to search. * * @return * Nonzero if the queue is used by a flow. */ int priv_flow_rxq_in_use(struct priv *priv, struct rxq *rxq) { struct rte_flow *flow; for (flow = TAILQ_FIRST(&priv->flows); flow; flow = TAILQ_NEXT(flow, next)) { unsigned int n; if (flow->drop) continue; for (n = 0; n < flow->rxqs_n; ++n) { if (flow->rxqs[n] == rxq) return 1; } } return 0; }