/*- * BSD LICENSE * * Copyright 2015 6WIND S.A. * Copyright 2015 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 #include #include #include /* Verbs header. */ /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ #ifdef PEDANTIC #pragma GCC diagnostic ignored "-pedantic" #endif #include #ifdef PEDANTIC #pragma GCC diagnostic error "-pedantic" #endif /* DPDK headers don't like -pedantic. */ #ifdef PEDANTIC #pragma GCC diagnostic ignored "-pedantic" #endif #include #include #include #include #ifdef PEDANTIC #pragma GCC diagnostic error "-pedantic" #endif #include "mlx5.h" #include "mlx5_rxtx.h" struct fdir_flow_desc { uint16_t dst_port; uint16_t src_port; uint32_t src_ip[4]; uint32_t dst_ip[4]; uint8_t mac[6]; uint16_t vlan_tag; enum hash_rxq_type type; }; struct mlx5_fdir_filter { LIST_ENTRY(mlx5_fdir_filter) next; uint16_t queue; /* Queue assigned to if FDIR match. */ struct fdir_flow_desc desc; struct ibv_exp_flow *flow; }; LIST_HEAD(fdir_filter_list, mlx5_fdir_filter); /** * Convert struct rte_eth_fdir_filter to mlx5 filter descriptor. * * @param[in] fdir_filter * DPDK filter structure to convert. * @param[out] desc * Resulting mlx5 filter descriptor. * @param mode * Flow director mode. */ static void fdir_filter_to_flow_desc(const struct rte_eth_fdir_filter *fdir_filter, struct fdir_flow_desc *desc, enum rte_fdir_mode mode) { /* Initialize descriptor. */ memset(desc, 0, sizeof(*desc)); /* Set VLAN ID. */ desc->vlan_tag = fdir_filter->input.flow_ext.vlan_tci; /* Set MAC address. */ if (mode == RTE_FDIR_MODE_PERFECT_MAC_VLAN) { rte_memcpy(desc->mac, fdir_filter->input.flow.mac_vlan_flow.mac_addr. addr_bytes, sizeof(desc->mac)); desc->type = HASH_RXQ_ETH; return; } /* Set mode */ switch (fdir_filter->input.flow_type) { case RTE_ETH_FLOW_NONFRAG_IPV4_UDP: desc->type = HASH_RXQ_UDPV4; break; case RTE_ETH_FLOW_NONFRAG_IPV4_TCP: desc->type = HASH_RXQ_TCPV4; break; case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER: desc->type = HASH_RXQ_IPV4; break; case RTE_ETH_FLOW_NONFRAG_IPV6_UDP: desc->type = HASH_RXQ_UDPV6; break; case RTE_ETH_FLOW_NONFRAG_IPV6_TCP: desc->type = HASH_RXQ_TCPV6; break; case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER: desc->type = HASH_RXQ_IPV6; break; default: break; } /* Set flow values */ switch (fdir_filter->input.flow_type) { case RTE_ETH_FLOW_NONFRAG_IPV4_UDP: case RTE_ETH_FLOW_NONFRAG_IPV4_TCP: desc->src_port = fdir_filter->input.flow.udp4_flow.src_port; desc->dst_port = fdir_filter->input.flow.udp4_flow.dst_port; case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER: desc->src_ip[0] = fdir_filter->input.flow.ip4_flow.src_ip; desc->dst_ip[0] = fdir_filter->input.flow.ip4_flow.dst_ip; break; case RTE_ETH_FLOW_NONFRAG_IPV6_UDP: case RTE_ETH_FLOW_NONFRAG_IPV6_TCP: desc->src_port = fdir_filter->input.flow.udp6_flow.src_port; desc->dst_port = fdir_filter->input.flow.udp6_flow.dst_port; /* Fall through. */ case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER: rte_memcpy(desc->src_ip, fdir_filter->input.flow.ipv6_flow.src_ip, sizeof(desc->src_ip)); rte_memcpy(desc->dst_ip, fdir_filter->input.flow.ipv6_flow.dst_ip, sizeof(desc->dst_ip)); break; default: break; } } /** * Check if two flow descriptors overlap according to configured mask. * * @param priv * Private structure that provides flow director mask. * @param desc1 * First flow descriptor to compare. * @param desc2 * Second flow descriptor to compare. * * @return * Nonzero if descriptors overlap. */ static int priv_fdir_overlap(const struct priv *priv, const struct fdir_flow_desc *desc1, const struct fdir_flow_desc *desc2) { const struct rte_eth_fdir_masks *mask = &priv->dev->data->dev_conf.fdir_conf.mask; unsigned int i; if (desc1->type != desc2->type) return 0; /* Ignore non masked bits. */ for (i = 0; i != RTE_DIM(desc1->mac); ++i) if ((desc1->mac[i] & mask->mac_addr_byte_mask) != (desc2->mac[i] & mask->mac_addr_byte_mask)) return 0; if (((desc1->src_port & mask->src_port_mask) != (desc2->src_port & mask->src_port_mask)) || ((desc1->dst_port & mask->dst_port_mask) != (desc2->dst_port & mask->dst_port_mask))) return 0; switch (desc1->type) { case HASH_RXQ_IPV4: case HASH_RXQ_UDPV4: case HASH_RXQ_TCPV4: if (((desc1->src_ip[0] & mask->ipv4_mask.src_ip) != (desc2->src_ip[0] & mask->ipv4_mask.src_ip)) || ((desc1->dst_ip[0] & mask->ipv4_mask.dst_ip) != (desc2->dst_ip[0] & mask->ipv4_mask.dst_ip))) return 0; break; case HASH_RXQ_IPV6: case HASH_RXQ_UDPV6: case HASH_RXQ_TCPV6: for (i = 0; i != RTE_DIM(desc1->src_ip); ++i) if (((desc1->src_ip[i] & mask->ipv6_mask.src_ip[i]) != (desc2->src_ip[i] & mask->ipv6_mask.src_ip[i])) || ((desc1->dst_ip[i] & mask->ipv6_mask.dst_ip[i]) != (desc2->dst_ip[i] & mask->ipv6_mask.dst_ip[i]))) return 0; break; default: break; } return 1; } /** * Create flow director steering rule for a specific filter. * * @param priv * Private structure. * @param mlx5_fdir_filter * Filter to create a steering rule for. * @param fdir_queue * Flow director queue for matching packets. * * @return * 0 on success, errno value on failure. */ static int priv_fdir_flow_add(struct priv *priv, struct mlx5_fdir_filter *mlx5_fdir_filter, struct fdir_queue *fdir_queue) { struct ibv_exp_flow *flow; struct fdir_flow_desc *desc = &mlx5_fdir_filter->desc; enum rte_fdir_mode fdir_mode = priv->dev->data->dev_conf.fdir_conf.mode; struct rte_eth_fdir_masks *mask = &priv->dev->data->dev_conf.fdir_conf.mask; FLOW_ATTR_SPEC_ETH(data, priv_flow_attr(priv, NULL, 0, desc->type)); struct ibv_exp_flow_attr *attr = &data->attr; uintptr_t spec_offset = (uintptr_t)&data->spec; struct ibv_exp_flow_spec_eth *spec_eth; struct ibv_exp_flow_spec_ipv4 *spec_ipv4; struct ibv_exp_flow_spec_ipv6 *spec_ipv6; struct ibv_exp_flow_spec_tcp_udp *spec_tcp_udp; struct mlx5_fdir_filter *iter_fdir_filter; unsigned int i; /* Abort if an existing flow overlaps this one to avoid packet * duplication, even if it targets another queue. */ LIST_FOREACH(iter_fdir_filter, priv->fdir_filter_list, next) if ((iter_fdir_filter != mlx5_fdir_filter) && (iter_fdir_filter->flow != NULL) && (priv_fdir_overlap(priv, &mlx5_fdir_filter->desc, &iter_fdir_filter->desc))) return EEXIST; /* * No padding must be inserted by the compiler between attr and spec. * This layout is expected by libibverbs. */ assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec_offset); priv_flow_attr(priv, attr, sizeof(data), desc->type); /* Set Ethernet spec */ spec_eth = (struct ibv_exp_flow_spec_eth *)spec_offset; /* The first specification must be Ethernet. */ assert(spec_eth->type == IBV_EXP_FLOW_SPEC_ETH); assert(spec_eth->size == sizeof(*spec_eth)); /* VLAN ID */ spec_eth->val.vlan_tag = desc->vlan_tag & mask->vlan_tci_mask; spec_eth->mask.vlan_tag = mask->vlan_tci_mask; /* Update priority */ attr->priority = 2; if (fdir_mode == RTE_FDIR_MODE_PERFECT_MAC_VLAN) { /* MAC Address */ for (i = 0; i != RTE_DIM(spec_eth->mask.dst_mac); ++i) { spec_eth->val.dst_mac[i] = desc->mac[i] & mask->mac_addr_byte_mask; spec_eth->mask.dst_mac[i] = mask->mac_addr_byte_mask; } goto create_flow; } switch (desc->type) { case HASH_RXQ_IPV4: case HASH_RXQ_UDPV4: case HASH_RXQ_TCPV4: spec_offset += spec_eth->size; /* Set IP spec */ spec_ipv4 = (struct ibv_exp_flow_spec_ipv4 *)spec_offset; /* The second specification must be IP. */ assert(spec_ipv4->type == IBV_EXP_FLOW_SPEC_IPV4); assert(spec_ipv4->size == sizeof(*spec_ipv4)); spec_ipv4->val.src_ip = desc->src_ip[0] & mask->ipv4_mask.src_ip; spec_ipv4->val.dst_ip = desc->dst_ip[0] & mask->ipv4_mask.dst_ip; spec_ipv4->mask.src_ip = mask->ipv4_mask.src_ip; spec_ipv4->mask.dst_ip = mask->ipv4_mask.dst_ip; /* Update priority */ attr->priority = 1; if (desc->type == HASH_RXQ_IPV4) goto create_flow; spec_offset += spec_ipv4->size; break; case HASH_RXQ_IPV6: case HASH_RXQ_UDPV6: case HASH_RXQ_TCPV6: spec_offset += spec_eth->size; /* Set IP spec */ spec_ipv6 = (struct ibv_exp_flow_spec_ipv6 *)spec_offset; /* The second specification must be IP. */ assert(spec_ipv6->type == IBV_EXP_FLOW_SPEC_IPV6); assert(spec_ipv6->size == sizeof(*spec_ipv6)); for (i = 0; i != RTE_DIM(desc->src_ip); ++i) { ((uint32_t *)spec_ipv6->val.src_ip)[i] = desc->src_ip[i] & mask->ipv6_mask.src_ip[i]; ((uint32_t *)spec_ipv6->val.dst_ip)[i] = desc->dst_ip[i] & mask->ipv6_mask.dst_ip[i]; } rte_memcpy(spec_ipv6->mask.src_ip, mask->ipv6_mask.src_ip, sizeof(spec_ipv6->mask.src_ip)); rte_memcpy(spec_ipv6->mask.dst_ip, mask->ipv6_mask.dst_ip, sizeof(spec_ipv6->mask.dst_ip)); /* Update priority */ attr->priority = 1; if (desc->type == HASH_RXQ_IPV6) goto create_flow; spec_offset += spec_ipv6->size; break; default: ERROR("invalid flow attribute type"); return EINVAL; } /* Set TCP/UDP flow specification. */ spec_tcp_udp = (struct ibv_exp_flow_spec_tcp_udp *)spec_offset; /* The third specification must be TCP/UDP. */ assert(spec_tcp_udp->type == IBV_EXP_FLOW_SPEC_TCP || spec_tcp_udp->type == IBV_EXP_FLOW_SPEC_UDP); assert(spec_tcp_udp->size == sizeof(*spec_tcp_udp)); spec_tcp_udp->val.src_port = desc->src_port & mask->src_port_mask; spec_tcp_udp->val.dst_port = desc->dst_port & mask->dst_port_mask; spec_tcp_udp->mask.src_port = mask->src_port_mask; spec_tcp_udp->mask.dst_port = mask->dst_port_mask; /* Update priority */ attr->priority = 0; create_flow: errno = 0; flow = ibv_exp_create_flow(fdir_queue->qp, attr); if (flow == NULL) { /* It's not clear whether errno is always set in this case. */ ERROR("%p: flow director configuration failed, errno=%d: %s", (void *)priv, errno, (errno ? strerror(errno) : "Unknown error")); if (errno) return errno; return EINVAL; } DEBUG("%p: added flow director rule (%p)", (void *)priv, (void *)flow); mlx5_fdir_filter->flow = flow; return 0; } /** * Destroy a flow director queue. * * @param fdir_queue * Flow director queue to be destroyed. */ void priv_fdir_queue_destroy(struct priv *priv, struct fdir_queue *fdir_queue) { struct mlx5_fdir_filter *fdir_filter; /* Disable filter flows still applying to this queue. */ LIST_FOREACH(fdir_filter, priv->fdir_filter_list, next) { unsigned int idx = fdir_filter->queue; struct rxq_ctrl *rxq_ctrl = container_of((*priv->rxqs)[idx], struct rxq_ctrl, rxq); assert(idx < priv->rxqs_n); if (fdir_queue == rxq_ctrl->fdir_queue && fdir_filter->flow != NULL) { claim_zero(ibv_exp_destroy_flow(fdir_filter->flow)); fdir_filter->flow = NULL; } } assert(fdir_queue->qp); claim_zero(ibv_destroy_qp(fdir_queue->qp)); assert(fdir_queue->ind_table); claim_zero(ibv_exp_destroy_rwq_ind_table(fdir_queue->ind_table)); if (fdir_queue->wq) claim_zero(ibv_exp_destroy_wq(fdir_queue->wq)); if (fdir_queue->cq) claim_zero(ibv_destroy_cq(fdir_queue->cq)); #ifndef NDEBUG memset(fdir_queue, 0x2a, sizeof(*fdir_queue)); #endif rte_free(fdir_queue); } /** * Create a flow director queue. * * @param priv * Private structure. * @param wq * Work queue to route matched packets to, NULL if one needs to * be created. * * @return * Related flow director queue on success, NULL otherwise. */ static struct fdir_queue * priv_fdir_queue_create(struct priv *priv, struct ibv_exp_wq *wq, unsigned int socket) { struct fdir_queue *fdir_queue; fdir_queue = rte_calloc_socket(__func__, 1, sizeof(*fdir_queue), 0, socket); if (!fdir_queue) { ERROR("cannot allocate flow director queue"); return NULL; } assert(priv->pd); assert(priv->ctx); if (!wq) { fdir_queue->cq = ibv_exp_create_cq( priv->ctx, 1, NULL, NULL, 0, &(struct ibv_exp_cq_init_attr){ .comp_mask = 0, }); if (!fdir_queue->cq) { ERROR("cannot create flow director CQ"); goto error; } fdir_queue->wq = 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 = fdir_queue->cq, }); if (!fdir_queue->wq) { ERROR("cannot create flow director WQ"); goto error; } wq = fdir_queue->wq; } fdir_queue->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 = &wq, .comp_mask = 0, }); if (!fdir_queue->ind_table) { ERROR("cannot create flow director indirection table"); goto error; } fdir_queue->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 = fdir_queue->ind_table, }, .port_num = priv->port, }); if (!fdir_queue->qp) { ERROR("cannot create flow director hash RX QP"); goto error; } return fdir_queue; error: assert(fdir_queue); assert(!fdir_queue->qp); if (fdir_queue->ind_table) claim_zero(ibv_exp_destroy_rwq_ind_table (fdir_queue->ind_table)); if (fdir_queue->wq) claim_zero(ibv_exp_destroy_wq(fdir_queue->wq)); if (fdir_queue->cq) claim_zero(ibv_destroy_cq(fdir_queue->cq)); rte_free(fdir_queue); return NULL; } /** * Get flow director queue for a specific RX queue, create it in case * it does not exist. * * @param priv * Private structure. * @param idx * RX queue index. * * @return * Related flow director queue on success, NULL otherwise. */ static struct fdir_queue * priv_get_fdir_queue(struct priv *priv, uint16_t idx) { struct rxq_ctrl *rxq_ctrl = container_of((*priv->rxqs)[idx], struct rxq_ctrl, rxq); struct fdir_queue *fdir_queue = rxq_ctrl->fdir_queue; assert(rxq_ctrl->wq); if (fdir_queue == NULL) { fdir_queue = priv_fdir_queue_create(priv, rxq_ctrl->wq, rxq_ctrl->socket); rxq_ctrl->fdir_queue = fdir_queue; } return fdir_queue; } /** * Enable flow director filter and create steering rules. * * @param priv * Private structure. * @param mlx5_fdir_filter * Filter to create steering rule for. * * @return * 0 on success, errno value on failure. */ static int priv_fdir_filter_enable(struct priv *priv, struct mlx5_fdir_filter *mlx5_fdir_filter) { struct fdir_queue *fdir_queue; /* Check if flow already exists. */ if (mlx5_fdir_filter->flow != NULL) return 0; /* Get fdir_queue for specific queue. */ fdir_queue = priv_get_fdir_queue(priv, mlx5_fdir_filter->queue); if (fdir_queue == NULL) { ERROR("failed to create flow director rxq for queue %d", mlx5_fdir_filter->queue); return EINVAL; } /* Create flow */ return priv_fdir_flow_add(priv, mlx5_fdir_filter, fdir_queue); } /** * Initialize flow director filters list. * * @param priv * Private structure. * * @return * 0 on success, errno value on failure. */ int fdir_init_filters_list(struct priv *priv) { /* Filter list initialization should be done only once. */ if (priv->fdir_filter_list) return 0; /* Create filters list. */ priv->fdir_filter_list = rte_calloc(__func__, 1, sizeof(*priv->fdir_filter_list), 0); if (priv->fdir_filter_list == NULL) { int err = ENOMEM; ERROR("cannot allocate flow director filter list: %s", strerror(err)); return err; } LIST_INIT(priv->fdir_filter_list); return 0; } /** * Flush all filters. * * @param priv * Private structure. */ static void priv_fdir_filter_flush(struct priv *priv) { struct mlx5_fdir_filter *mlx5_fdir_filter; while ((mlx5_fdir_filter = LIST_FIRST(priv->fdir_filter_list))) { struct ibv_exp_flow *flow = mlx5_fdir_filter->flow; DEBUG("%p: flushing flow director filter %p", (void *)priv, (void *)mlx5_fdir_filter); LIST_REMOVE(mlx5_fdir_filter, next); if (flow != NULL) claim_zero(ibv_exp_destroy_flow(flow)); rte_free(mlx5_fdir_filter); } } /** * Remove all flow director filters and delete list. * * @param priv * Private structure. */ void priv_fdir_delete_filters_list(struct priv *priv) { priv_fdir_filter_flush(priv); rte_free(priv->fdir_filter_list); priv->fdir_filter_list = NULL; } /** * Disable flow director, remove all steering rules. * * @param priv * Private structure. */ void priv_fdir_disable(struct priv *priv) { unsigned int i; struct mlx5_fdir_filter *mlx5_fdir_filter; /* Run on every flow director filter and destroy flow handle. */ LIST_FOREACH(mlx5_fdir_filter, priv->fdir_filter_list, next) { struct ibv_exp_flow *flow; /* Only valid elements should be in the list */ assert(mlx5_fdir_filter != NULL); flow = mlx5_fdir_filter->flow; /* Destroy flow handle */ if (flow != NULL) { claim_zero(ibv_exp_destroy_flow(flow)); mlx5_fdir_filter->flow = NULL; } } /* Destroy flow director context in each RX queue. */ for (i = 0; (i != priv->rxqs_n); i++) { struct rxq_ctrl *rxq_ctrl = container_of((*priv->rxqs)[i], struct rxq_ctrl, rxq); if (!rxq_ctrl->fdir_queue) continue; priv_fdir_queue_destroy(priv, rxq_ctrl->fdir_queue); rxq_ctrl->fdir_queue = NULL; } } /** * Enable flow director, create steering rules. * * @param priv * Private structure. */ void priv_fdir_enable(struct priv *priv) { struct mlx5_fdir_filter *mlx5_fdir_filter; /* Run on every fdir filter and create flow handle */ LIST_FOREACH(mlx5_fdir_filter, priv->fdir_filter_list, next) { /* Only valid elements should be in the list */ assert(mlx5_fdir_filter != NULL); priv_fdir_filter_enable(priv, mlx5_fdir_filter); } } /** * Find specific filter in list. * * @param priv * Private structure. * @param fdir_filter * Flow director filter to find. * * @return * Filter element if found, otherwise NULL. */ static struct mlx5_fdir_filter * priv_find_filter_in_list(struct priv *priv, const struct rte_eth_fdir_filter *fdir_filter) { struct fdir_flow_desc desc; struct mlx5_fdir_filter *mlx5_fdir_filter; enum rte_fdir_mode fdir_mode = priv->dev->data->dev_conf.fdir_conf.mode; /* Get flow director filter to look for. */ fdir_filter_to_flow_desc(fdir_filter, &desc, fdir_mode); /* Look for the requested element. */ LIST_FOREACH(mlx5_fdir_filter, priv->fdir_filter_list, next) { /* Only valid elements should be in the list. */ assert(mlx5_fdir_filter != NULL); /* Return matching filter. */ if (!memcmp(&desc, &mlx5_fdir_filter->desc, sizeof(desc))) return mlx5_fdir_filter; } /* Filter not found */ return NULL; } /** * Add new flow director filter and store it in list. * * @param priv * Private structure. * @param fdir_filter * Flow director filter to add. * * @return * 0 on success, errno value on failure. */ static int priv_fdir_filter_add(struct priv *priv, const struct rte_eth_fdir_filter *fdir_filter) { struct mlx5_fdir_filter *mlx5_fdir_filter; enum rte_fdir_mode fdir_mode = priv->dev->data->dev_conf.fdir_conf.mode; int err = 0; /* Validate queue number. */ if (fdir_filter->action.rx_queue >= priv->rxqs_n) { ERROR("invalid queue number %d", fdir_filter->action.rx_queue); return EINVAL; } /* Duplicate filters are currently unsupported. */ mlx5_fdir_filter = priv_find_filter_in_list(priv, fdir_filter); if (mlx5_fdir_filter != NULL) { ERROR("filter already exists"); return EINVAL; } /* Create new flow director filter. */ mlx5_fdir_filter = rte_calloc(__func__, 1, sizeof(*mlx5_fdir_filter), 0); if (mlx5_fdir_filter == NULL) { err = ENOMEM; ERROR("cannot allocate flow director filter: %s", strerror(err)); return err; } /* Set queue. */ mlx5_fdir_filter->queue = fdir_filter->action.rx_queue; /* Convert to mlx5 filter descriptor. */ fdir_filter_to_flow_desc(fdir_filter, &mlx5_fdir_filter->desc, fdir_mode); /* Insert new filter into list. */ LIST_INSERT_HEAD(priv->fdir_filter_list, mlx5_fdir_filter, next); DEBUG("%p: flow director filter %p added", (void *)priv, (void *)mlx5_fdir_filter); /* Enable filter immediately if device is started. */ if (priv->started) err = priv_fdir_filter_enable(priv, mlx5_fdir_filter); return err; } /** * Update queue for specific filter. * * @param priv * Private structure. * @param fdir_filter * Filter to be updated. * * @return * 0 on success, errno value on failure. */ static int priv_fdir_filter_update(struct priv *priv, const struct rte_eth_fdir_filter *fdir_filter) { struct mlx5_fdir_filter *mlx5_fdir_filter; /* Validate queue number. */ if (fdir_filter->action.rx_queue >= priv->rxqs_n) { ERROR("invalid queue number %d", fdir_filter->action.rx_queue); return EINVAL; } mlx5_fdir_filter = priv_find_filter_in_list(priv, fdir_filter); if (mlx5_fdir_filter != NULL) { struct ibv_exp_flow *flow = mlx5_fdir_filter->flow; int err = 0; /* Update queue number. */ mlx5_fdir_filter->queue = fdir_filter->action.rx_queue; /* Destroy flow handle. */ if (flow != NULL) { claim_zero(ibv_exp_destroy_flow(flow)); mlx5_fdir_filter->flow = NULL; } DEBUG("%p: flow director filter %p updated", (void *)priv, (void *)mlx5_fdir_filter); /* Enable filter if device is started. */ if (priv->started) err = priv_fdir_filter_enable(priv, mlx5_fdir_filter); return err; } /* Filter not found, create it. */ DEBUG("%p: filter not found for update, creating new filter", (void *)priv); return priv_fdir_filter_add(priv, fdir_filter); } /** * Delete specific filter. * * @param priv * Private structure. * @param fdir_filter * Filter to be deleted. * * @return * 0 on success, errno value on failure. */ static int priv_fdir_filter_delete(struct priv *priv, const struct rte_eth_fdir_filter *fdir_filter) { struct mlx5_fdir_filter *mlx5_fdir_filter; mlx5_fdir_filter = priv_find_filter_in_list(priv, fdir_filter); if (mlx5_fdir_filter != NULL) { struct ibv_exp_flow *flow = mlx5_fdir_filter->flow; /* Remove element from list. */ LIST_REMOVE(mlx5_fdir_filter, next); /* Destroy flow handle. */ if (flow != NULL) { claim_zero(ibv_exp_destroy_flow(flow)); mlx5_fdir_filter->flow = NULL; } DEBUG("%p: flow director filter %p deleted", (void *)priv, (void *)mlx5_fdir_filter); /* Delete filter. */ rte_free(mlx5_fdir_filter); return 0; } ERROR("%p: flow director delete failed, cannot find filter", (void *)priv); return EINVAL; } /** * Get flow director information. * * @param priv * Private structure. * @param[out] fdir_info * Resulting flow director information. */ static void priv_fdir_info_get(struct priv *priv, struct rte_eth_fdir_info *fdir_info) { struct rte_eth_fdir_masks *mask = &priv->dev->data->dev_conf.fdir_conf.mask; fdir_info->mode = priv->dev->data->dev_conf.fdir_conf.mode; fdir_info->guarant_spc = 0; rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask)); fdir_info->max_flexpayload = 0; fdir_info->flow_types_mask[0] = 0; fdir_info->flex_payload_unit = 0; fdir_info->max_flex_payload_segment_num = 0; fdir_info->flex_payload_limit = 0; memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf)); } /** * Deal with flow director operations. * * @param priv * Pointer to private structure. * @param filter_op * Operation to perform. * @param arg * Pointer to operation-specific structure. * * @return * 0 on success, errno value on failure. */ static int priv_fdir_ctrl_func(struct priv *priv, enum rte_filter_op filter_op, void *arg) { enum rte_fdir_mode fdir_mode = priv->dev->data->dev_conf.fdir_conf.mode; int ret = 0; if (filter_op == RTE_ETH_FILTER_NOP) return 0; if (fdir_mode != RTE_FDIR_MODE_PERFECT && fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) { ERROR("%p: flow director mode %d not supported", (void *)priv, fdir_mode); return EINVAL; } switch (filter_op) { case RTE_ETH_FILTER_ADD: ret = priv_fdir_filter_add(priv, arg); break; case RTE_ETH_FILTER_UPDATE: ret = priv_fdir_filter_update(priv, arg); break; case RTE_ETH_FILTER_DELETE: ret = priv_fdir_filter_delete(priv, arg); break; case RTE_ETH_FILTER_FLUSH: priv_fdir_filter_flush(priv); break; case RTE_ETH_FILTER_INFO: priv_fdir_info_get(priv, arg); break; default: DEBUG("%p: unknown operation %u", (void *)priv, filter_op); ret = EINVAL; break; } return ret; } /** * 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; struct priv *priv = dev->data->dev_private; switch (filter_type) { case RTE_ETH_FILTER_FDIR: priv_lock(priv); ret = priv_fdir_ctrl_func(priv, filter_op, arg); priv_unlock(priv); break; default: ERROR("%p: filter type (%d) not supported", (void *)dev, filter_type); break; } return -ret; }