/*- * 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" /* Define minimal priority for control plane flows. */ #define MLX5_CTRL_FLOW_PRIORITY 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); /** Structure for Drop queue. */ struct mlx5_hrxq_drop { struct ibv_rwq_ind_table *ind_table; /**< Indirection table. */ struct ibv_qp *qp; /**< Verbs queue pair. */ struct ibv_wq *wq; /**< Verbs work queue. */ struct ibv_cq *cq; /**< Verbs completion queue. */ }; /* Flows structures. */ struct mlx5_flow { uint64_t hash_fields; /**< Fields that participate in the hash. */ struct mlx5_hrxq *hrxq; /**< Hash Rx queues. */ }; /* Drop flows structures. */ struct mlx5_flow_drop { struct mlx5_hrxq_drop hrxq; /**< Drop hash Rx queue. */ }; struct rte_flow { TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */ uint32_t mark:1; /**< Set if the flow is marked. */ uint32_t drop:1; /**< Drop queue. */ struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */ struct ibv_flow *ibv_flow; /**< Verbs flow. */ uint16_t queues_n; /**< Number of entries in queue[]. */ uint16_t (*queues)[]; /**< Queues indexes to use. */ union { struct mlx5_flow frxq; /**< Flow with Rx queue. */ struct mlx5_flow_drop drxq; /**< Flow with drop Rx queue. */ }; }; /** 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_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_flow_spec_ipv4), }, [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_flow_spec_ipv6), }, [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_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_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_flow_spec_tunnel), }, }; /* Structure to parse actions. */ 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[]. */ }; /** Structure to pass to the conversion function. */ struct mlx5_flow_parse { struct ibv_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. */ struct mlx5_flow_action actions; /**< Parsed action result. */ }; static const struct rte_flow_ops mlx5_flow_ops = { .validate = mlx5_flow_validate, .create = mlx5_flow_create, .destroy = mlx5_flow_destroy, .flush = mlx5_flow_flush, .query = NULL, .isolate = mlx5_flow_isolate, }; /** * Manage filter operations. * * @param dev * Pointer to Ethernet device structure. * @param filter_type * Filter type. * @param filter_op * Operation to perform. * @param arg * Pointer to operation-specific structure. * * @return * 0 on success, negative errno value on failure. */ int mlx5_dev_filter_ctrl(struct rte_eth_dev *dev, enum rte_filter_type filter_type, enum rte_filter_op filter_op, void *arg) { int ret = EINVAL; if (filter_type == RTE_ETH_FILTER_GENERIC) { if (filter_op != RTE_ETH_FILTER_GET) return -EINVAL; *(const void **)arg = &mlx5_flow_ops; return 0; } ERROR("%p: filter type (%d) not supported", (void *)dev, filter_type); return -ret; } /** * 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. * * @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_parse *flow) { 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 && attr->priority != MLX5_CTRL_FLOW_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) { flow->actions.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 < flow->actions.queues_n; ++n) { if (flow->actions.queues[n] == queue->index) { found = 1; break; } } if (flow->actions.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) { flow->actions.queue = 1; flow->actions.queues_n = 1; flow->actions.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 (flow->actions.queues_n == 1) { uint16_t found = 0; assert(flow->actions.queues_n); for (n = 0; n < rss->num; ++n) { if (flow->actions.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; } } flow->actions.queue = 1; for (n = 0; n < rss->num; ++n) flow->actions.queues[n] = rss->queue[n]; flow->actions.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; } flow->actions.mark = 1; flow->actions.mark_id = mark->id; } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) { flow->actions.mark = 1; } else { goto exit_action_not_supported; } } if (flow->actions.mark && !flow->ibv_attr && !flow->actions.drop) flow->offset += sizeof(struct ibv_flow_spec_action_tag); if (!flow->ibv_attr && flow->actions.drop) flow->offset += sizeof(struct ibv_flow_spec_action_drop); if (!flow->actions.queue && !flow->actions.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_parse flow = { .offset = sizeof(struct ibv_flow_attr), .actions = { .mark_id = MLX5_FLOW_MARK_DEFAULT, .queues_n = 0, }, }; priv_lock(priv); ret = priv_flow_validate(priv, attr, items, actions, error, &flow); 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_parse *flow = (struct mlx5_flow_parse *)data; struct ibv_flow_spec_eth *eth; const unsigned int eth_size = sizeof(struct ibv_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_flow_spec_eth) { .type = flow->inner | IBV_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_parse *flow = (struct mlx5_flow_parse *)data; struct ibv_flow_spec_eth *eth; const unsigned int eth_size = sizeof(struct ibv_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_parse *flow = (struct mlx5_flow_parse *)data; struct ibv_flow_spec_ipv4_ext *ipv4; unsigned int ipv4_size = sizeof(struct ibv_flow_spec_ipv4_ext); ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 1; flow->hash_fields = (IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4); ipv4 = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *ipv4 = (struct ibv_flow_spec_ipv4_ext) { .type = flow->inner | IBV_FLOW_SPEC_IPV4_EXT, .size = ipv4_size, }; if (!spec) return 0; if (!mask) mask = default_mask; ipv4->val = (struct ibv_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_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_parse *flow = (struct mlx5_flow_parse *)data; struct ibv_flow_spec_ipv6 *ipv6; unsigned int ipv6_size = sizeof(struct ibv_flow_spec_ipv6); unsigned int i; ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 1; flow->hash_fields = (IBV_RX_HASH_SRC_IPV6 | IBV_RX_HASH_DST_IPV6); ipv6 = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *ipv6 = (struct ibv_flow_spec_ipv6) { .type = flow->inner | IBV_FLOW_SPEC_IPV6, .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_parse *flow = (struct mlx5_flow_parse *)data; struct ibv_flow_spec_tcp_udp *udp; unsigned int udp_size = sizeof(struct ibv_flow_spec_tcp_udp); ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 0; flow->hash_fields |= (IBV_RX_HASH_SRC_PORT_UDP | IBV_RX_HASH_DST_PORT_UDP); udp = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *udp = (struct ibv_flow_spec_tcp_udp) { .type = flow->inner | IBV_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_parse *flow = (struct mlx5_flow_parse *)data; struct ibv_flow_spec_tcp_udp *tcp; unsigned int tcp_size = sizeof(struct ibv_flow_spec_tcp_udp); ++flow->ibv_attr->num_of_specs; flow->ibv_attr->priority = 0; flow->hash_fields |= (IBV_RX_HASH_SRC_PORT_TCP | IBV_RX_HASH_DST_PORT_TCP); tcp = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *tcp = (struct ibv_flow_spec_tcp_udp) { .type = flow->inner | IBV_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_parse *flow = (struct mlx5_flow_parse *)data; struct ibv_flow_spec_tunnel *vxlan; unsigned int size = sizeof(struct ibv_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_flow_spec_tunnel) { .type = flow->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL, .size = size, }; flow->inner = IBV_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_parse *flow, uint32_t mark_id) { struct ibv_flow_spec_action_tag *tag; unsigned int size = sizeof(struct ibv_flow_spec_action_tag); tag = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *tag = (struct ibv_flow_spec_action_tag){ .type = IBV_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_parse *flow, struct rte_flow_error *error) { struct rte_flow *rte_flow; struct ibv_flow_spec_action_drop *drop; unsigned int size = sizeof(struct ibv_flow_spec_action_drop); 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; drop = (void *)((uintptr_t)flow->ibv_attr + flow->offset); *drop = (struct ibv_flow_spec_action_drop){ .type = IBV_FLOW_SPEC_ACTION_DROP, .size = size, }; ++flow->ibv_attr->num_of_specs; flow->offset += sizeof(struct ibv_flow_spec_action_drop); rte_flow->ibv_attr = flow->ibv_attr; if (!priv->dev->data->dev_started) return rte_flow; rte_flow->drxq.hrxq.qp = priv->flow_drop_queue->qp; rte_flow->ibv_flow = ibv_create_flow(rte_flow->drxq.hrxq.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[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_parse *flow, struct rte_flow_error *error) { struct rte_flow *rte_flow; unsigned int i; assert(priv->pd); assert(priv->ctx); assert(!flow->actions.drop); rte_flow = rte_calloc(__func__, 1, sizeof(*flow) + flow->actions.queues_n * sizeof(uint16_t), 0); if (!rte_flow) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "cannot allocate flow memory"); return NULL; } rte_flow->mark = flow->actions.mark; rte_flow->ibv_attr = flow->ibv_attr; rte_flow->queues = (uint16_t (*)[])(rte_flow + 1); memcpy(rte_flow->queues, flow->actions.queues, flow->actions.queues_n * sizeof(uint16_t)); rte_flow->queues_n = flow->actions.queues_n; rte_flow->frxq.hash_fields = flow->hash_fields; rte_flow->frxq.hrxq = mlx5_priv_hrxq_get(priv, rss_hash_default_key, rss_hash_default_key_len, flow->hash_fields, (*rte_flow->queues), rte_flow->queues_n); if (rte_flow->frxq.hrxq) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "duplicated flow"); goto error; } rte_flow->frxq.hrxq = mlx5_priv_hrxq_new(priv, rss_hash_default_key, rss_hash_default_key_len, flow->hash_fields, (*rte_flow->queues), rte_flow->queues_n); if (!rte_flow->frxq.hrxq) { rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, NULL, "cannot create hash rxq"); goto error; } for (i = 0; i != flow->actions.queues_n; ++i) { struct mlx5_rxq_data *q = (*priv->rxqs)[flow->actions.queues[i]]; q->mark |= flow->actions.mark; } if (!priv->dev->data->dev_started) return rte_flow; rte_flow->ibv_flow = ibv_create_flow(rte_flow->frxq.hrxq->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->frxq.hrxq) mlx5_priv_hrxq_release(priv, rte_flow->frxq.hrxq); rte_free(rte_flow); return NULL; } /** * Convert a flow. * * @param priv * Pointer to private structure. * @param list * Pointer to a TAILQ flow list. * @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, struct mlx5_flows *list, 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_parse flow = { .offset = sizeof(struct ibv_flow_attr), .actions = { .mark_id = MLX5_FLOW_MARK_DEFAULT, .queues = { 0 }, .queues_n = 0, }, }; int err; err = priv_flow_validate(priv, attr, items, actions, error, &flow); if (err) goto exit; flow.ibv_attr = rte_malloc(__func__, flow.offset, 0); flow.offset = sizeof(struct ibv_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_flow_attr){ .type = IBV_FLOW_ATTR_NORMAL, .size = sizeof(struct ibv_flow_attr), .priority = attr->priority, .num_of_specs = 0, .port = 0, .flags = 0, }; flow.inner = 0; flow.hash_fields = 0; claim_zero(priv_flow_validate(priv, attr, items, actions, error, &flow)); if (flow.actions.mark && !flow.actions.drop) { mlx5_flow_create_flag_mark(&flow, flow.actions.mark_id); flow.offset += sizeof(struct ibv_flow_spec_action_tag); } if (flow.actions.drop) rte_flow = priv_flow_create_action_queue_drop(priv, &flow, error); else rte_flow = priv_flow_create_action_queue(priv, &flow, error); if (!rte_flow) goto exit; if (rte_flow) { TAILQ_INSERT_TAIL(list, rte_flow, next); DEBUG("Flow created %p", (void *)rte_flow); } 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, &priv->flows, attr, items, actions, error); priv_unlock(priv); return flow; } /** * Destroy a flow. * * @param priv * Pointer to private structure. * @param list * Pointer to a TAILQ flow list. * @param[in] flow * Flow to destroy. */ static void priv_flow_destroy(struct priv *priv, struct mlx5_flows *list, struct rte_flow *flow) { unsigned int i; uint16_t *queues; uint16_t queues_n; if (flow->drop || !flow->mark) goto free; queues = flow->frxq.hrxq->ind_table->queues; queues_n = flow->frxq.hrxq->ind_table->queues_n; for (i = 0; i != queues_n; ++i) { struct rte_flow *tmp; struct mlx5_rxq_data *rxq_data = (*priv->rxqs)[queues[i]]; int mark = 0; /* * To remove the mark from the queue, the queue must not be * present in any other marked flow (RSS or not). */ TAILQ_FOREACH(tmp, list, next) { unsigned int j; if (!tmp->mark) continue; for (j = 0; (j != tmp->frxq.hrxq->ind_table->queues_n) && !mark; j++) if (tmp->frxq.hrxq->ind_table->queues[j] == queues[i]) mark = 1; } rxq_data->mark = mark; } free: if (flow->ibv_flow) claim_zero(ibv_destroy_flow(flow->ibv_flow)); if (!flow->drop) mlx5_priv_hrxq_release(priv, flow->frxq.hrxq); TAILQ_REMOVE(list, flow, next); 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, &priv->flows, flow); priv_unlock(priv); return 0; } /** * Destroy all flows. * * @param priv * Pointer to private structure. * @param list * Pointer to a TAILQ flow list. */ void priv_flow_flush(struct priv *priv, struct mlx5_flows *list) { while (!TAILQ_EMPTY(list)) { struct rte_flow *flow; flow = TAILQ_FIRST(list); priv_flow_destroy(priv, list, 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->flows); 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 mlx5_hrxq_drop *fdq = NULL; 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_create_cq(priv->ctx, 1, NULL, NULL, 0); if (!fdq->cq) { WARN("cannot allocate CQ for drop queue"); goto error; } fdq->wq = ibv_create_wq(priv->ctx, &(struct ibv_wq_init_attr){ .wq_type = IBV_WQT_RQ, .max_wr = 1, .max_sge = 1, .pd = priv->pd, .cq = fdq->cq, }); if (!fdq->wq) { WARN("cannot allocate WQ for drop queue"); goto error; } fdq->ind_table = ibv_create_rwq_ind_table(priv->ctx, &(struct ibv_rwq_ind_table_init_attr){ .log_ind_tbl_size = 0, .ind_tbl = &fdq->wq, .comp_mask = 0, }); if (!fdq->ind_table) { WARN("cannot allocate indirection table for drop queue"); goto error; } fdq->qp = ibv_create_qp_ex(priv->ctx, &(struct ibv_qp_init_attr_ex){ .qp_type = IBV_QPT_RAW_PACKET, .comp_mask = IBV_QP_INIT_ATTR_PD | IBV_QP_INIT_ATTR_IND_TABLE | IBV_QP_INIT_ATTR_RX_HASH, .rx_hash_conf = (struct ibv_rx_hash_conf){ .rx_hash_function = IBV_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, .pd = priv->pd }); 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_destroy_rwq_ind_table(fdq->ind_table)); if (fdq->wq) claim_zero(ibv_destroy_wq(fdq->wq)); 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 mlx5_hrxq_drop *fdq = priv->flow_drop_queue; if (!fdq) return; if (fdq->qp) claim_zero(ibv_destroy_qp(fdq->qp)); if (fdq->ind_table) claim_zero(ibv_destroy_rwq_ind_table(fdq->ind_table)); if (fdq->wq) claim_zero(ibv_destroy_wq(fdq->wq)); 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. * @param list * Pointer to a TAILQ flow list. */ void priv_flow_stop(struct priv *priv, struct mlx5_flows *list) { struct rte_flow *flow; TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) { claim_zero(ibv_destroy_flow(flow->ibv_flow)); flow->ibv_flow = NULL; mlx5_priv_hrxq_release(priv, flow->frxq.hrxq); flow->frxq.hrxq = NULL; if (flow->mark) { unsigned int n; struct mlx5_ind_table_ibv *ind_tbl = flow->frxq.hrxq->ind_table; for (n = 0; n < ind_tbl->queues_n; ++n) (*priv->rxqs)[ind_tbl->queues[n]]->mark = 0; } DEBUG("Flow %p removed", (void *)flow); } priv_flow_delete_drop_queue(priv); } /** * Add all flows. * * @param priv * Pointer to private structure. * @param list * Pointer to a TAILQ flow list. * * @return * 0 on success, a errno value otherwise and rte_errno is set. */ int priv_flow_start(struct priv *priv, struct mlx5_flows *list) { int ret; struct rte_flow *flow; ret = priv_flow_create_drop_queue(priv); if (ret) return -1; TAILQ_FOREACH(flow, list, next) { if (flow->frxq.hrxq) goto flow_create; flow->frxq.hrxq = mlx5_priv_hrxq_get(priv, rss_hash_default_key, rss_hash_default_key_len, flow->frxq.hash_fields, (*flow->queues), flow->queues_n); if (flow->frxq.hrxq) goto flow_create; flow->frxq.hrxq = mlx5_priv_hrxq_new(priv, rss_hash_default_key, rss_hash_default_key_len, flow->frxq.hash_fields, (*flow->queues), flow->queues_n); if (!flow->frxq.hrxq) { DEBUG("Flow %p cannot be applied", (void *)flow); rte_errno = EINVAL; return rte_errno; } flow_create: flow->ibv_flow = ibv_create_flow(flow->frxq.hrxq->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->frxq.hrxq->ind_table->queues_n; ++n) { uint16_t idx = flow->frxq.hrxq->ind_table->queues[n]; (*priv->rxqs)[idx]->mark = 1; } } } return 0; } /** * Isolated mode. * * @see rte_flow_isolate() * @see rte_flow_ops */ int mlx5_flow_isolate(struct rte_eth_dev *dev, int enable, struct rte_flow_error *error) { struct priv *priv = dev->data->dev_private; priv_lock(priv); if (dev->data->dev_started) { rte_flow_error_set(error, EBUSY, RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, "port must be stopped first"); priv_unlock(priv); return -rte_errno; } priv->isolated = !!enable; priv_unlock(priv); return 0; } /** * Verify the flow list is empty * * @param priv * Pointer to private structure. * * @return the number of flows not released. */ int priv_flow_verify(struct priv *priv) { struct rte_flow *flow; int ret = 0; TAILQ_FOREACH(flow, &priv->flows, next) { DEBUG("%p: flow %p still referenced", (void *)priv, (void *)flow); ++ret; } return ret; } /** * Enable/disable a control flow configured from the control plane. * * @param dev * Pointer to Ethernet device. * @param spec * An Ethernet flow spec to apply. * @param mask * An Ethernet flow mask to apply. * @param enable * Enable/disable the flow. * * @return * 0 on success. */ int mlx5_ctrl_flow(struct rte_eth_dev *dev, struct rte_flow_item_eth *spec, struct rte_flow_item_eth *mask, unsigned int enable) { struct priv *priv = dev->data->dev_private; const struct rte_flow_attr attr = { .ingress = 1, .priority = MLX5_CTRL_FLOW_PRIORITY, }; struct rte_flow_item items[] = { { .type = RTE_FLOW_ITEM_TYPE_ETH, .spec = spec, .last = NULL, .mask = mask, }, { .type = RTE_FLOW_ITEM_TYPE_END, }, }; struct rte_flow_action actions[] = { { .type = RTE_FLOW_ACTION_TYPE_QUEUE, .conf = &(struct rte_flow_action_queue){ .index = 0, }, }, { .type = RTE_FLOW_ACTION_TYPE_END, }, }; struct rte_flow *flow; struct rte_flow_error error; if (enable) { flow = priv_flow_create(priv, &priv->ctrl_flows, &attr, items, actions, &error); if (!flow) return 1; } else { struct spec { struct ibv_flow_attr ibv_attr; struct ibv_flow_spec_eth eth; } spec; struct mlx5_flow_parse parser = { .ibv_attr = &spec.ibv_attr, .offset = sizeof(struct ibv_flow_attr), }; struct ibv_flow_spec_eth *eth; const unsigned int attr_size = sizeof(struct ibv_flow_attr); claim_zero(mlx5_flow_create_eth(&items[0], NULL, &parser)); TAILQ_FOREACH(flow, &priv->ctrl_flows, next) { eth = (void *)((uintptr_t)flow->ibv_attr + attr_size); assert(eth->type == IBV_FLOW_SPEC_ETH); if (!memcmp(eth, &spec.eth, sizeof(*eth))) break; } if (flow) { claim_zero(ibv_destroy_flow(flow->ibv_flow)); mlx5_priv_hrxq_release(priv, flow->frxq.hrxq); rte_free(flow->ibv_attr); DEBUG("Control flow destroyed %p", (void *)flow); TAILQ_REMOVE(&priv->ctrl_flows, flow, next); rte_free(flow); } } return 0; }