diff options
Diffstat (limited to 'src/seastar/dpdk/drivers/net/mlx5/mlx5_flow.c')
| -rw-r--r-- | src/seastar/dpdk/drivers/net/mlx5/mlx5_flow.c | 2973 |
1 files changed, 2973 insertions, 0 deletions
diff --git a/src/seastar/dpdk/drivers/net/mlx5/mlx5_flow.c b/src/seastar/dpdk/drivers/net/mlx5/mlx5_flow.c new file mode 100644 index 000000000..f29c617e1 --- /dev/null +++ b/src/seastar/dpdk/drivers/net/mlx5/mlx5_flow.c @@ -0,0 +1,2973 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2016 6WIND S.A. + * Copyright 2016 Mellanox Technologies, Ltd + */ + +#include <netinet/in.h> +#include <sys/queue.h> +#include <stdalign.h> +#include <stdint.h> +#include <string.h> + +/* Verbs header. */ +/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ +#ifdef PEDANTIC +#pragma GCC diagnostic ignored "-Wpedantic" +#endif +#include <infiniband/verbs.h> +#ifdef PEDANTIC +#pragma GCC diagnostic error "-Wpedantic" +#endif + +#include <rte_common.h> +#include <rte_ether.h> +#include <rte_ethdev_driver.h> +#include <rte_flow.h> +#include <rte_flow_driver.h> +#include <rte_malloc.h> +#include <rte_ip.h> + +#include "mlx5.h" +#include "mlx5_defs.h" +#include "mlx5_flow.h" +#include "mlx5_glue.h" +#include "mlx5_prm.h" +#include "mlx5_rxtx.h" + +/* Dev ops structure defined in mlx5.c */ +extern const struct eth_dev_ops mlx5_dev_ops; +extern const struct eth_dev_ops mlx5_dev_ops_isolate; + +/** Device flow drivers. */ +#ifdef HAVE_IBV_FLOW_DV_SUPPORT +extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops; +#endif +extern const struct mlx5_flow_driver_ops mlx5_flow_tcf_drv_ops; +extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops; + +const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops; + +const struct mlx5_flow_driver_ops *flow_drv_ops[] = { + [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops, +#ifdef HAVE_IBV_FLOW_DV_SUPPORT + [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops, +#endif + [MLX5_FLOW_TYPE_TCF] = &mlx5_flow_tcf_drv_ops, + [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops, + [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops +}; + +enum mlx5_expansion { + MLX5_EXPANSION_ROOT, + MLX5_EXPANSION_ROOT_OUTER, + MLX5_EXPANSION_ROOT_ETH_VLAN, + MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN, + MLX5_EXPANSION_OUTER_ETH, + MLX5_EXPANSION_OUTER_ETH_VLAN, + MLX5_EXPANSION_OUTER_VLAN, + MLX5_EXPANSION_OUTER_IPV4, + MLX5_EXPANSION_OUTER_IPV4_UDP, + MLX5_EXPANSION_OUTER_IPV4_TCP, + MLX5_EXPANSION_OUTER_IPV6, + MLX5_EXPANSION_OUTER_IPV6_UDP, + MLX5_EXPANSION_OUTER_IPV6_TCP, + MLX5_EXPANSION_VXLAN, + MLX5_EXPANSION_VXLAN_GPE, + MLX5_EXPANSION_GRE, + MLX5_EXPANSION_MPLS, + MLX5_EXPANSION_ETH, + MLX5_EXPANSION_ETH_VLAN, + MLX5_EXPANSION_VLAN, + MLX5_EXPANSION_IPV4, + MLX5_EXPANSION_IPV4_UDP, + MLX5_EXPANSION_IPV4_TCP, + MLX5_EXPANSION_IPV6, + MLX5_EXPANSION_IPV6_UDP, + MLX5_EXPANSION_IPV6_TCP, +}; + +/** Supported expansion of items. */ +static const struct rte_flow_expand_node mlx5_support_expansion[] = { + [MLX5_EXPANSION_ROOT] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH, + MLX5_EXPANSION_IPV4, + MLX5_EXPANSION_IPV6), + .type = RTE_FLOW_ITEM_TYPE_END, + }, + [MLX5_EXPANSION_ROOT_OUTER] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH, + MLX5_EXPANSION_OUTER_IPV4, + MLX5_EXPANSION_OUTER_IPV6), + .type = RTE_FLOW_ITEM_TYPE_END, + }, + [MLX5_EXPANSION_ROOT_ETH_VLAN] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN), + .type = RTE_FLOW_ITEM_TYPE_END, + }, + [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN), + .type = RTE_FLOW_ITEM_TYPE_END, + }, + [MLX5_EXPANSION_OUTER_ETH] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4, + MLX5_EXPANSION_OUTER_IPV6, + MLX5_EXPANSION_MPLS), + .type = RTE_FLOW_ITEM_TYPE_ETH, + .rss_types = 0, + }, + [MLX5_EXPANSION_OUTER_ETH_VLAN] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN), + .type = RTE_FLOW_ITEM_TYPE_ETH, + .rss_types = 0, + }, + [MLX5_EXPANSION_OUTER_VLAN] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4, + MLX5_EXPANSION_OUTER_IPV6), + .type = RTE_FLOW_ITEM_TYPE_VLAN, + }, + [MLX5_EXPANSION_OUTER_IPV4] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT + (MLX5_EXPANSION_OUTER_IPV4_UDP, + MLX5_EXPANSION_OUTER_IPV4_TCP, + MLX5_EXPANSION_GRE), + .type = RTE_FLOW_ITEM_TYPE_IPV4, + .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | + ETH_RSS_NONFRAG_IPV4_OTHER, + }, + [MLX5_EXPANSION_OUTER_IPV4_UDP] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN, + MLX5_EXPANSION_VXLAN_GPE), + .type = RTE_FLOW_ITEM_TYPE_UDP, + .rss_types = ETH_RSS_NONFRAG_IPV4_UDP, + }, + [MLX5_EXPANSION_OUTER_IPV4_TCP] = { + .type = RTE_FLOW_ITEM_TYPE_TCP, + .rss_types = ETH_RSS_NONFRAG_IPV4_TCP, + }, + [MLX5_EXPANSION_OUTER_IPV6] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT + (MLX5_EXPANSION_OUTER_IPV6_UDP, + MLX5_EXPANSION_OUTER_IPV6_TCP), + .type = RTE_FLOW_ITEM_TYPE_IPV6, + .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | + ETH_RSS_NONFRAG_IPV6_OTHER, + }, + [MLX5_EXPANSION_OUTER_IPV6_UDP] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN, + MLX5_EXPANSION_VXLAN_GPE), + .type = RTE_FLOW_ITEM_TYPE_UDP, + .rss_types = ETH_RSS_NONFRAG_IPV6_UDP, + }, + [MLX5_EXPANSION_OUTER_IPV6_TCP] = { + .type = RTE_FLOW_ITEM_TYPE_TCP, + .rss_types = ETH_RSS_NONFRAG_IPV6_TCP, + }, + [MLX5_EXPANSION_VXLAN] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH), + .type = RTE_FLOW_ITEM_TYPE_VXLAN, + }, + [MLX5_EXPANSION_VXLAN_GPE] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH, + MLX5_EXPANSION_IPV4, + MLX5_EXPANSION_IPV6), + .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE, + }, + [MLX5_EXPANSION_GRE] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4), + .type = RTE_FLOW_ITEM_TYPE_GRE, + }, + [MLX5_EXPANSION_MPLS] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4, + MLX5_EXPANSION_IPV6), + .type = RTE_FLOW_ITEM_TYPE_MPLS, + }, + [MLX5_EXPANSION_ETH] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4, + MLX5_EXPANSION_IPV6), + .type = RTE_FLOW_ITEM_TYPE_ETH, + }, + [MLX5_EXPANSION_ETH_VLAN] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN), + .type = RTE_FLOW_ITEM_TYPE_ETH, + }, + [MLX5_EXPANSION_VLAN] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4, + MLX5_EXPANSION_IPV6), + .type = RTE_FLOW_ITEM_TYPE_VLAN, + }, + [MLX5_EXPANSION_IPV4] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP, + MLX5_EXPANSION_IPV4_TCP), + .type = RTE_FLOW_ITEM_TYPE_IPV4, + .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | + ETH_RSS_NONFRAG_IPV4_OTHER, + }, + [MLX5_EXPANSION_IPV4_UDP] = { + .type = RTE_FLOW_ITEM_TYPE_UDP, + .rss_types = ETH_RSS_NONFRAG_IPV4_UDP, + }, + [MLX5_EXPANSION_IPV4_TCP] = { + .type = RTE_FLOW_ITEM_TYPE_TCP, + .rss_types = ETH_RSS_NONFRAG_IPV4_TCP, + }, + [MLX5_EXPANSION_IPV6] = { + .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP, + MLX5_EXPANSION_IPV6_TCP), + .type = RTE_FLOW_ITEM_TYPE_IPV6, + .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | + ETH_RSS_NONFRAG_IPV6_OTHER, + }, + [MLX5_EXPANSION_IPV6_UDP] = { + .type = RTE_FLOW_ITEM_TYPE_UDP, + .rss_types = ETH_RSS_NONFRAG_IPV6_UDP, + }, + [MLX5_EXPANSION_IPV6_TCP] = { + .type = RTE_FLOW_ITEM_TYPE_TCP, + .rss_types = ETH_RSS_NONFRAG_IPV6_TCP, + }, +}; + +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, + .isolate = mlx5_flow_isolate, + .query = mlx5_flow_query, +}; + +/* Convert FDIR request to Generic flow. */ +struct mlx5_fdir { + struct rte_flow_attr attr; + struct rte_flow_item items[4]; + struct rte_flow_item_eth l2; + struct rte_flow_item_eth l2_mask; + union { + struct rte_flow_item_ipv4 ipv4; + struct rte_flow_item_ipv6 ipv6; + } l3; + union { + struct rte_flow_item_ipv4 ipv4; + struct rte_flow_item_ipv6 ipv6; + } l3_mask; + union { + struct rte_flow_item_udp udp; + struct rte_flow_item_tcp tcp; + } l4; + union { + struct rte_flow_item_udp udp; + struct rte_flow_item_tcp tcp; + } l4_mask; + struct rte_flow_action actions[2]; + struct rte_flow_action_queue queue; +}; + +/* Map of Verbs to Flow priority with 8 Verbs priorities. */ +static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = { + { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 }, +}; + +/* Map of Verbs to Flow priority with 16 Verbs priorities. */ +static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = { + { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 }, + { 9, 10, 11 }, { 12, 13, 14 }, +}; + +/* Tunnel information. */ +struct mlx5_flow_tunnel_info { + uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */ + uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */ +}; + +static struct mlx5_flow_tunnel_info tunnels_info[] = { + { + .tunnel = MLX5_FLOW_LAYER_VXLAN, + .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP, + }, + { + .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE, + .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP, + }, + { + .tunnel = MLX5_FLOW_LAYER_GRE, + .ptype = RTE_PTYPE_TUNNEL_GRE, + }, + { + .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP, + .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP, + }, + { + .tunnel = MLX5_FLOW_LAYER_MPLS, + .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE, + }, +}; + +/** + * Discover the maximum number of priority available. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * + * @return + * number of supported flow priority on success, a negative errno + * value otherwise and rte_errno is set. + */ +int +mlx5_flow_discover_priorities(struct rte_eth_dev *dev) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct { + struct ibv_flow_attr attr; + struct ibv_flow_spec_eth eth; + struct ibv_flow_spec_action_drop drop; + } flow_attr = { + .attr = { + .num_of_specs = 2, + .port = (uint8_t)priv->ibv_port, + }, + .eth = { + .type = IBV_FLOW_SPEC_ETH, + .size = sizeof(struct ibv_flow_spec_eth), + }, + .drop = { + .size = sizeof(struct ibv_flow_spec_action_drop), + .type = IBV_FLOW_SPEC_ACTION_DROP, + }, + }; + struct ibv_flow *flow; + struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev); + uint16_t vprio[] = { 8, 16 }; + int i; + int priority = 0; + + if (!drop) { + rte_errno = ENOTSUP; + return -rte_errno; + } + for (i = 0; i != RTE_DIM(vprio); i++) { + flow_attr.attr.priority = vprio[i] - 1; + flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr); + if (!flow) + break; + claim_zero(mlx5_glue->destroy_flow(flow)); + priority = vprio[i]; + } + mlx5_hrxq_drop_release(dev); + switch (priority) { + case 8: + priority = RTE_DIM(priority_map_3); + break; + case 16: + priority = RTE_DIM(priority_map_5); + break; + default: + rte_errno = ENOTSUP; + DRV_LOG(ERR, + "port %u verbs maximum priority: %d expected 8/16", + dev->data->port_id, priority); + return -rte_errno; + } + DRV_LOG(INFO, "port %u flow maximum priority: %d", + dev->data->port_id, priority); + return priority; +} + +/** + * Adjust flow priority based on the highest layer and the request priority. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] priority + * The rule base priority. + * @param[in] subpriority + * The priority based on the items. + * + * @return + * The new priority. + */ +uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority, + uint32_t subpriority) +{ + uint32_t res = 0; + struct mlx5_priv *priv = dev->data->dev_private; + + switch (priv->config.flow_prio) { + case RTE_DIM(priority_map_3): + res = priority_map_3[priority][subpriority]; + break; + case RTE_DIM(priority_map_5): + res = priority_map_5[priority][subpriority]; + break; + } + return res; +} + +/** + * Verify the @p item specifications (spec, last, mask) are compatible with the + * NIC capabilities. + * + * @param[in] item + * Item specification. + * @param[in] mask + * @p item->mask or flow default bit-masks. + * @param[in] nic_mask + * Bit-masks covering supported fields by the NIC to compare with user mask. + * @param[in] size + * Bit-masks size in bytes. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_item_acceptable(const struct rte_flow_item *item, + const uint8_t *mask, + const uint8_t *nic_mask, + unsigned int size, + struct rte_flow_error *error) +{ + unsigned int i; + + assert(nic_mask); + for (i = 0; i < size; ++i) + if ((nic_mask[i] | mask[i]) != nic_mask[i]) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "mask enables non supported" + " bits"); + if (!item->spec && (item->mask || item->last)) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "mask/last without a spec is not" + " supported"); + if (item->spec && item->last) { + uint8_t spec[size]; + uint8_t last[size]; + unsigned int i; + int ret; + + for (i = 0; i < size; ++i) { + spec[i] = ((const uint8_t *)item->spec)[i] & mask[i]; + last[i] = ((const uint8_t *)item->last)[i] & mask[i]; + } + ret = memcmp(spec, last, size); + if (ret != 0) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "range is not valid"); + } + return 0; +} + +/** + * Adjust the hash fields according to the @p flow information. + * + * @param[in] dev_flow. + * Pointer to the mlx5_flow. + * @param[in] tunnel + * 1 when the hash field is for a tunnel item. + * @param[in] layer_types + * ETH_RSS_* types. + * @param[in] hash_fields + * Item hash fields. + * + * @return + * The hash fileds that should be used. + */ +uint64_t +mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow, + int tunnel __rte_unused, uint64_t layer_types, + uint64_t hash_fields) +{ + struct rte_flow *flow = dev_flow->flow; +#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT + int rss_request_inner = flow->rss.level >= 2; + + /* Check RSS hash level for tunnel. */ + if (tunnel && rss_request_inner) + hash_fields |= IBV_RX_HASH_INNER; + else if (tunnel || rss_request_inner) + return 0; +#endif + /* Check if requested layer matches RSS hash fields. */ + if (!(flow->rss.types & layer_types)) + return 0; + return hash_fields; +} + +/** + * Lookup and set the ptype in the data Rx part. A single Ptype can be used, + * if several tunnel rules are used on this queue, the tunnel ptype will be + * cleared. + * + * @param rxq_ctrl + * Rx queue to update. + */ +static void +flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl) +{ + unsigned int i; + uint32_t tunnel_ptype = 0; + + /* Look up for the ptype to use. */ + for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) { + if (!rxq_ctrl->flow_tunnels_n[i]) + continue; + if (!tunnel_ptype) { + tunnel_ptype = tunnels_info[i].ptype; + } else { + tunnel_ptype = 0; + break; + } + } + rxq_ctrl->rxq.tunnel = tunnel_ptype; +} + +/** + * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive + * flow. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] dev_flow + * Pointer to device flow structure. + */ +static void +flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct rte_flow *flow = dev_flow->flow; + const int mark = !!(flow->actions & + (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK)); + const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL); + unsigned int i; + + for (i = 0; i != flow->rss.queue_num; ++i) { + int idx = (*flow->queue)[i]; + struct mlx5_rxq_ctrl *rxq_ctrl = + container_of((*priv->rxqs)[idx], + struct mlx5_rxq_ctrl, rxq); + + if (mark) { + rxq_ctrl->rxq.mark = 1; + rxq_ctrl->flow_mark_n++; + } + if (tunnel) { + unsigned int j; + + /* Increase the counter matching the flow. */ + for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) { + if ((tunnels_info[j].tunnel & + dev_flow->layers) == + tunnels_info[j].tunnel) { + rxq_ctrl->flow_tunnels_n[j]++; + break; + } + } + flow_rxq_tunnel_ptype_update(rxq_ctrl); + } + } +} + +/** + * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] flow + * Pointer to flow structure. + */ +static void +flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + struct mlx5_flow *dev_flow; + + LIST_FOREACH(dev_flow, &flow->dev_flows, next) + flow_drv_rxq_flags_set(dev, dev_flow); +} + +/** + * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the + * device flow if no other flow uses it with the same kind of request. + * + * @param dev + * Pointer to Ethernet device. + * @param[in] dev_flow + * Pointer to the device flow. + */ +static void +flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct rte_flow *flow = dev_flow->flow; + const int mark = !!(flow->actions & + (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK)); + const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL); + unsigned int i; + + assert(dev->data->dev_started); + for (i = 0; i != flow->rss.queue_num; ++i) { + int idx = (*flow->queue)[i]; + struct mlx5_rxq_ctrl *rxq_ctrl = + container_of((*priv->rxqs)[idx], + struct mlx5_rxq_ctrl, rxq); + + if (mark) { + rxq_ctrl->flow_mark_n--; + rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n; + } + if (tunnel) { + unsigned int j; + + /* Decrease the counter matching the flow. */ + for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) { + if ((tunnels_info[j].tunnel & + dev_flow->layers) == + tunnels_info[j].tunnel) { + rxq_ctrl->flow_tunnels_n[j]--; + break; + } + } + flow_rxq_tunnel_ptype_update(rxq_ctrl); + } + } +} + +/** + * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the + * @p flow if no other flow uses it with the same kind of request. + * + * @param dev + * Pointer to Ethernet device. + * @param[in] flow + * Pointer to the flow. + */ +static void +flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + struct mlx5_flow *dev_flow; + + LIST_FOREACH(dev_flow, &flow->dev_flows, next) + flow_drv_rxq_flags_trim(dev, dev_flow); +} + +/** + * Clear the Mark/Flag and Tunnel ptype information in all Rx queues. + * + * @param dev + * Pointer to Ethernet device. + */ +static void +flow_rxq_flags_clear(struct rte_eth_dev *dev) +{ + struct mlx5_priv *priv = dev->data->dev_private; + unsigned int i; + + for (i = 0; i != priv->rxqs_n; ++i) { + struct mlx5_rxq_ctrl *rxq_ctrl; + unsigned int j; + + if (!(*priv->rxqs)[i]) + continue; + rxq_ctrl = container_of((*priv->rxqs)[i], + struct mlx5_rxq_ctrl, rxq); + rxq_ctrl->flow_mark_n = 0; + rxq_ctrl->rxq.mark = 0; + for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) + rxq_ctrl->flow_tunnels_n[j] = 0; + rxq_ctrl->rxq.tunnel = 0; + } +} + +/* + * Validate the flag action. + * + * @param[in] action_flags + * Bit-fields that holds the actions detected until now. + * @param[in] attr + * Attributes of flow that includes this action. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_action_flag(uint64_t action_flags, + const struct rte_flow_attr *attr, + struct rte_flow_error *error) +{ + + if (action_flags & MLX5_FLOW_ACTION_DROP) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't drop and flag in same flow"); + if (action_flags & MLX5_FLOW_ACTION_MARK) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't mark and flag in same flow"); + if (action_flags & MLX5_FLOW_ACTION_FLAG) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't have 2 flag" + " actions in same flow"); + if (attr->egress) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL, + "flag action not supported for " + "egress"); + return 0; +} + +/* + * Validate the mark action. + * + * @param[in] action + * Pointer to the queue action. + * @param[in] action_flags + * Bit-fields that holds the actions detected until now. + * @param[in] attr + * Attributes of flow that includes this action. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_action_mark(const struct rte_flow_action *action, + uint64_t action_flags, + const struct rte_flow_attr *attr, + struct rte_flow_error *error) +{ + const struct rte_flow_action_mark *mark = action->conf; + + if (!mark) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "configuration cannot be null"); + if (mark->id >= MLX5_FLOW_MARK_MAX) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &mark->id, + "mark id must in 0 <= id < " + RTE_STR(MLX5_FLOW_MARK_MAX)); + if (action_flags & MLX5_FLOW_ACTION_DROP) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't drop and mark in same flow"); + if (action_flags & MLX5_FLOW_ACTION_FLAG) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't flag and mark in same flow"); + if (action_flags & MLX5_FLOW_ACTION_MARK) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't have 2 mark actions in same" + " flow"); + if (attr->egress) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL, + "mark action not supported for " + "egress"); + return 0; +} + +/* + * Validate the drop action. + * + * @param[in] action_flags + * Bit-fields that holds the actions detected until now. + * @param[in] attr + * Attributes of flow that includes this action. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_action_drop(uint64_t action_flags, + const struct rte_flow_attr *attr, + struct rte_flow_error *error) +{ + if (action_flags & MLX5_FLOW_ACTION_FLAG) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't drop and flag in same flow"); + if (action_flags & MLX5_FLOW_ACTION_MARK) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't drop and mark in same flow"); + if (action_flags & MLX5_FLOW_FATE_ACTIONS) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't have 2 fate actions in" + " same flow"); + if (attr->egress) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL, + "drop action not supported for " + "egress"); + return 0; +} + +/* + * Validate the queue action. + * + * @param[in] action + * Pointer to the queue action. + * @param[in] action_flags + * Bit-fields that holds the actions detected until now. + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] attr + * Attributes of flow that includes this action. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_action_queue(const struct rte_flow_action *action, + uint64_t action_flags, + struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + struct rte_flow_error *error) +{ + struct mlx5_priv *priv = dev->data->dev_private; + const struct rte_flow_action_queue *queue = action->conf; + + if (action_flags & MLX5_FLOW_FATE_ACTIONS) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't have 2 fate actions in" + " same flow"); + if (!priv->rxqs_n) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + NULL, "No Rx queues configured"); + if (queue->index >= priv->rxqs_n) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &queue->index, + "queue index out of range"); + if (!(*priv->rxqs)[queue->index]) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &queue->index, + "queue is not configured"); + if (attr->egress) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL, + "queue action not supported for " + "egress"); + return 0; +} + +/* + * Validate the rss action. + * + * @param[in] action + * Pointer to the queue action. + * @param[in] action_flags + * Bit-fields that holds the actions detected until now. + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] attr + * Attributes of flow that includes this action. + * @param[in] item_flags + * Items that were detected. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_action_rss(const struct rte_flow_action *action, + uint64_t action_flags, + struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + uint64_t item_flags, + struct rte_flow_error *error) +{ + struct mlx5_priv *priv = dev->data->dev_private; + const struct rte_flow_action_rss *rss = action->conf; + int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL); + unsigned int i; + + if (action_flags & MLX5_FLOW_FATE_ACTIONS) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, NULL, + "can't have 2 fate actions" + " in same flow"); + if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT && + rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &rss->func, + "RSS hash function not supported"); +#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT + if (rss->level > 2) +#else + if (rss->level > 1) +#endif + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &rss->level, + "tunnel RSS is not supported"); + /* allow RSS key_len 0 in case of NULL (default) RSS key. */ + if (rss->key_len == 0 && rss->key != NULL) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &rss->key_len, + "RSS hash key length 0"); + if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &rss->key_len, + "RSS hash key too small"); + if (rss->key_len > MLX5_RSS_HASH_KEY_LEN) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &rss->key_len, + "RSS hash key too large"); + if (rss->queue_num > priv->config.ind_table_max_size) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &rss->queue_num, + "number of queues too large"); + if (rss->types & MLX5_RSS_HF_MASK) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &rss->types, + "some RSS protocols are not" + " supported"); + if (!priv->rxqs_n) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + NULL, "No Rx queues configured"); + if (!rss->queue_num) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + NULL, "No queues configured"); + for (i = 0; i != rss->queue_num; ++i) { + if (!(*priv->rxqs)[rss->queue[i]]) + return rte_flow_error_set + (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF, + &rss->queue[i], "queue is not configured"); + } + if (attr->egress) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL, + "rss action not supported for " + "egress"); + if (rss->level > 1 && !tunnel) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL, + "inner RSS is not supported for " + "non-tunnel flows"); + return 0; +} + +/* + * Validate the count action. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] attr + * Attributes of flow that includes this action. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused, + const struct rte_flow_attr *attr, + struct rte_flow_error *error) +{ + if (attr->egress) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL, + "count action not supported for " + "egress"); + return 0; +} + +/** + * Verify the @p attributes will be correctly understood by the NIC and store + * them in the @p flow if everything is correct. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] attributes + * Pointer to flow attributes + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_attributes(struct rte_eth_dev *dev, + const struct rte_flow_attr *attributes, + struct rte_flow_error *error) +{ + struct mlx5_priv *priv = dev->data->dev_private; + uint32_t priority_max = priv->config.flow_prio - 1; + + if (attributes->group) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_GROUP, + NULL, "groups is not supported"); + if (attributes->priority != MLX5_FLOW_PRIO_RSVD && + attributes->priority >= priority_max) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, + NULL, "priority out of range"); + if (attributes->egress) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL, + "egress is not supported"); + if (attributes->transfer) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER, + NULL, "transfer is not supported"); + if (!attributes->ingress) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, + NULL, + "ingress attribute is mandatory"); + return 0; +} + +/** + * Validate Ethernet item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_eth(const struct rte_flow_item *item, + uint64_t item_flags, + struct rte_flow_error *error) +{ + const struct rte_flow_item_eth *mask = item->mask; + const struct rte_flow_item_eth nic_mask = { + .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff", + .src.addr_bytes = "\xff\xff\xff\xff\xff\xff", + .type = RTE_BE16(0xffff), + }; + int ret; + int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL); + const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 : + MLX5_FLOW_LAYER_OUTER_L2; + + if (item_flags & ethm) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple L2 layers not supported"); + if (!mask) + mask = &rte_flow_item_eth_mask; + ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask, + (const uint8_t *)&nic_mask, + sizeof(struct rte_flow_item_eth), + error); + return ret; +} + +/** + * Validate VLAN item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_vlan(const struct rte_flow_item *item, + uint64_t item_flags, + struct rte_flow_error *error) +{ + const struct rte_flow_item_vlan *spec = item->spec; + const struct rte_flow_item_vlan *mask = item->mask; + const struct rte_flow_item_vlan nic_mask = { + .tci = RTE_BE16(0x0fff), + .inner_type = RTE_BE16(0xffff), + }; + uint16_t vlan_tag = 0; + const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL); + int ret; + const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 | + MLX5_FLOW_LAYER_INNER_L4) : + (MLX5_FLOW_LAYER_OUTER_L3 | + MLX5_FLOW_LAYER_OUTER_L4); + const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN : + MLX5_FLOW_LAYER_OUTER_VLAN; + + if (item_flags & vlanm) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple VLAN layers not supported"); + else if ((item_flags & l34m) != 0) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "L2 layer cannot follow L3/L4 layer"); + if (!mask) + mask = &rte_flow_item_vlan_mask; + ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask, + (const uint8_t *)&nic_mask, + sizeof(struct rte_flow_item_vlan), + error); + if (ret) + return ret; + if (spec) { + vlan_tag = spec->tci; + vlan_tag &= mask->tci; + } + /* + * From verbs perspective an empty VLAN is equivalent + * to a packet without VLAN layer. + */ + if (!vlan_tag) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM_SPEC, + item->spec, + "VLAN cannot be empty"); + return 0; +} + +/** + * Validate IPV4 item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[in] acc_mask + * Acceptable mask, if NULL default internal default mask + * will be used to check whether item fields are supported. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item, + uint64_t item_flags, + const struct rte_flow_item_ipv4 *acc_mask, + struct rte_flow_error *error) +{ + const struct rte_flow_item_ipv4 *mask = item->mask; + const struct rte_flow_item_ipv4 nic_mask = { + .hdr = { + .src_addr = RTE_BE32(0xffffffff), + .dst_addr = RTE_BE32(0xffffffff), + .type_of_service = 0xff, + .next_proto_id = 0xff, + }, + }; + const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL); + const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 : + MLX5_FLOW_LAYER_OUTER_L3; + const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 : + MLX5_FLOW_LAYER_OUTER_L4; + int ret; + + if (item_flags & l3m) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple L3 layers not supported"); + else if (item_flags & l4m) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "L3 cannot follow an L4 layer."); + if (!mask) + mask = &rte_flow_item_ipv4_mask; + else if (mask->hdr.next_proto_id != 0 && + mask->hdr.next_proto_id != 0xff) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask, + "partial mask is not supported" + " for protocol"); + ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask, + acc_mask ? (const uint8_t *)acc_mask + : (const uint8_t *)&nic_mask, + sizeof(struct rte_flow_item_ipv4), + error); + if (ret < 0) + return ret; + return 0; +} + +/** + * Validate IPV6 item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[in] acc_mask + * Acceptable mask, if NULL default internal default mask + * will be used to check whether item fields are supported. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item, + uint64_t item_flags, + const struct rte_flow_item_ipv6 *acc_mask, + struct rte_flow_error *error) +{ + const struct rte_flow_item_ipv6 *mask = item->mask; + const struct rte_flow_item_ipv6 nic_mask = { + .hdr = { + .src_addr = + "\xff\xff\xff\xff\xff\xff\xff\xff" + "\xff\xff\xff\xff\xff\xff\xff\xff", + .dst_addr = + "\xff\xff\xff\xff\xff\xff\xff\xff" + "\xff\xff\xff\xff\xff\xff\xff\xff", + .vtc_flow = RTE_BE32(0xffffffff), + .proto = 0xff, + .hop_limits = 0xff, + }, + }; + const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL); + const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 : + MLX5_FLOW_LAYER_OUTER_L3; + const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 : + MLX5_FLOW_LAYER_OUTER_L4; + int ret; + + if (item_flags & l3m) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple L3 layers not supported"); + else if (item_flags & l4m) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "L3 cannot follow an L4 layer."); + if (!mask) + mask = &rte_flow_item_ipv6_mask; + ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask, + acc_mask ? (const uint8_t *)acc_mask + : (const uint8_t *)&nic_mask, + sizeof(struct rte_flow_item_ipv6), + error); + if (ret < 0) + return ret; + return 0; +} + +/** + * Validate UDP item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[in] target_protocol + * The next protocol in the previous item. + * @param[in] flow_mask + * mlx5 flow-specific (TCF, DV, verbs, etc.) supported header fields mask. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_udp(const struct rte_flow_item *item, + uint64_t item_flags, + uint8_t target_protocol, + struct rte_flow_error *error) +{ + const struct rte_flow_item_udp *mask = item->mask; + const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL); + const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 : + MLX5_FLOW_LAYER_OUTER_L3; + const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 : + MLX5_FLOW_LAYER_OUTER_L4; + int ret; + + if (target_protocol != 0xff && target_protocol != IPPROTO_UDP) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "protocol filtering not compatible" + " with UDP layer"); + if (!(item_flags & l3m)) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "L3 is mandatory to filter on L4"); + if (item_flags & l4m) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple L4 layers not supported"); + if (!mask) + mask = &rte_flow_item_udp_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&rte_flow_item_udp_mask, + sizeof(struct rte_flow_item_udp), error); + if (ret < 0) + return ret; + return 0; +} + +/** + * Validate TCP item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[in] target_protocol + * The next protocol in the previous item. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_tcp(const struct rte_flow_item *item, + uint64_t item_flags, + uint8_t target_protocol, + const struct rte_flow_item_tcp *flow_mask, + struct rte_flow_error *error) +{ + const struct rte_flow_item_tcp *mask = item->mask; + const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL); + const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 : + MLX5_FLOW_LAYER_OUTER_L3; + const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 : + MLX5_FLOW_LAYER_OUTER_L4; + int ret; + + assert(flow_mask); + if (target_protocol != 0xff && target_protocol != IPPROTO_TCP) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "protocol filtering not compatible" + " with TCP layer"); + if (!(item_flags & l3m)) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "L3 is mandatory to filter on L4"); + if (item_flags & l4m) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple L4 layers not supported"); + if (!mask) + mask = &rte_flow_item_tcp_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)flow_mask, + sizeof(struct rte_flow_item_tcp), error); + if (ret < 0) + return ret; + return 0; +} + +/** + * Validate VXLAN item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[in] target_protocol + * The next protocol in the previous item. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item, + uint64_t item_flags, + struct rte_flow_error *error) +{ + const struct rte_flow_item_vxlan *spec = item->spec; + const struct rte_flow_item_vxlan *mask = item->mask; + int ret; + union vni { + uint32_t vlan_id; + uint8_t vni[4]; + } id = { .vlan_id = 0, }; + uint32_t vlan_id = 0; + + + if (item_flags & MLX5_FLOW_LAYER_TUNNEL) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple tunnel layers not" + " supported"); + /* + * Verify only UDPv4 is present as defined in + * https://tools.ietf.org/html/rfc7348 + */ + if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP)) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "no outer UDP layer found"); + if (!mask) + mask = &rte_flow_item_vxlan_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&rte_flow_item_vxlan_mask, + sizeof(struct rte_flow_item_vxlan), + error); + if (ret < 0) + return ret; + if (spec) { + memcpy(&id.vni[1], spec->vni, 3); + vlan_id = id.vlan_id; + memcpy(&id.vni[1], mask->vni, 3); + vlan_id &= id.vlan_id; + } + /* + * Tunnel id 0 is equivalent as not adding a VXLAN layer, if + * only this layer is defined in the Verbs specification it is + * interpreted as wildcard and all packets will match this + * rule, if it follows a full stack layer (ex: eth / ipv4 / + * udp), all packets matching the layers before will also + * match this rule. To avoid such situation, VNI 0 is + * currently refused. + */ + if (!vlan_id) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "VXLAN vni cannot be 0"); + if (!(item_flags & MLX5_FLOW_LAYER_OUTER)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "VXLAN tunnel must be fully defined"); + return 0; +} + +/** + * Validate VXLAN_GPE item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[in] priv + * Pointer to the private data structure. + * @param[in] target_protocol + * The next protocol in the previous item. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item, + uint64_t item_flags, + struct rte_eth_dev *dev, + struct rte_flow_error *error) +{ + struct mlx5_priv *priv = dev->data->dev_private; + const struct rte_flow_item_vxlan_gpe *spec = item->spec; + const struct rte_flow_item_vxlan_gpe *mask = item->mask; + int ret; + union vni { + uint32_t vlan_id; + uint8_t vni[4]; + } id = { .vlan_id = 0, }; + uint32_t vlan_id = 0; + + if (!priv->config.l3_vxlan_en) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "L3 VXLAN is not enabled by device" + " parameter and/or not configured in" + " firmware"); + if (item_flags & MLX5_FLOW_LAYER_TUNNEL) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple tunnel layers not" + " supported"); + /* + * Verify only UDPv4 is present as defined in + * https://tools.ietf.org/html/rfc7348 + */ + if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP)) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "no outer UDP layer found"); + if (!mask) + mask = &rte_flow_item_vxlan_gpe_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&rte_flow_item_vxlan_gpe_mask, + sizeof(struct rte_flow_item_vxlan_gpe), + error); + if (ret < 0) + return ret; + if (spec) { + if (spec->protocol) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "VxLAN-GPE protocol" + " not supported"); + memcpy(&id.vni[1], spec->vni, 3); + vlan_id = id.vlan_id; + memcpy(&id.vni[1], mask->vni, 3); + vlan_id &= id.vlan_id; + } + /* + * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this + * layer is defined in the Verbs specification it is interpreted as + * wildcard and all packets will match this rule, if it follows a full + * stack layer (ex: eth / ipv4 / udp), all packets matching the layers + * before will also match this rule. To avoid such situation, VNI 0 + * is currently refused. + */ + if (!vlan_id) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "VXLAN-GPE vni cannot be 0"); + if (!(item_flags & MLX5_FLOW_LAYER_OUTER)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "VXLAN-GPE tunnel must be fully" + " defined"); + return 0; +} + +/** + * Validate GRE item. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit flags to mark detected items. + * @param[in] target_protocol + * The next protocol in the previous item. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_gre(const struct rte_flow_item *item, + uint64_t item_flags, + uint8_t target_protocol, + struct rte_flow_error *error) +{ + const struct rte_flow_item_gre *spec __rte_unused = item->spec; + const struct rte_flow_item_gre *mask = item->mask; + int ret; + + if (target_protocol != 0xff && target_protocol != IPPROTO_GRE) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "protocol filtering not compatible" + " with this GRE layer"); + if (item_flags & MLX5_FLOW_LAYER_TUNNEL) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple tunnel layers not" + " supported"); + if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "L3 Layer is missing"); + if (!mask) + mask = &rte_flow_item_gre_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&rte_flow_item_gre_mask, + sizeof(struct rte_flow_item_gre), error); + if (ret < 0) + return ret; +#ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT + if (spec && (spec->protocol & mask->protocol)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "without MPLS support the" + " specification cannot be used for" + " filtering"); +#endif + return 0; +} + +/** + * Validate MPLS item. + * + * @param[in] dev + * Pointer to the rte_eth_dev structure. + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit-fields that holds the items detected until now. + * @param[in] prev_layer + * The protocol layer indicated in previous item. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused, + const struct rte_flow_item *item __rte_unused, + uint64_t item_flags __rte_unused, + uint64_t prev_layer __rte_unused, + struct rte_flow_error *error) +{ +#ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT + const struct rte_flow_item_mpls *mask = item->mask; + struct mlx5_priv *priv = dev->data->dev_private; + int ret; + + if (!priv->config.mpls_en) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "MPLS not supported or" + " disabled in firmware" + " configuration."); + /* MPLS over IP, UDP, GRE is allowed */ + if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 | + MLX5_FLOW_LAYER_OUTER_L4_UDP | + MLX5_FLOW_LAYER_GRE))) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "protocol filtering not compatible" + " with MPLS layer"); + /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */ + if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) && + !(item_flags & MLX5_FLOW_LAYER_GRE)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "multiple tunnel layers not" + " supported"); + if (!mask) + mask = &rte_flow_item_mpls_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&rte_flow_item_mpls_mask, + sizeof(struct rte_flow_item_mpls), error); + if (ret < 0) + return ret; + return 0; +#endif + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, item, + "MPLS is not supported by Verbs, please" + " update."); +} + +static int +flow_null_validate(struct rte_eth_dev *dev __rte_unused, + const struct rte_flow_attr *attr __rte_unused, + const struct rte_flow_item items[] __rte_unused, + const struct rte_flow_action actions[] __rte_unused, + struct rte_flow_error *error __rte_unused) +{ + rte_errno = ENOTSUP; + return -rte_errno; +} + +static struct mlx5_flow * +flow_null_prepare(const struct rte_flow_attr *attr __rte_unused, + const struct rte_flow_item items[] __rte_unused, + const struct rte_flow_action actions[] __rte_unused, + struct rte_flow_error *error __rte_unused) +{ + rte_errno = ENOTSUP; + return NULL; +} + +static int +flow_null_translate(struct rte_eth_dev *dev __rte_unused, + struct mlx5_flow *dev_flow __rte_unused, + const struct rte_flow_attr *attr __rte_unused, + const struct rte_flow_item items[] __rte_unused, + const struct rte_flow_action actions[] __rte_unused, + struct rte_flow_error *error __rte_unused) +{ + rte_errno = ENOTSUP; + return -rte_errno; +} + +static int +flow_null_apply(struct rte_eth_dev *dev __rte_unused, + struct rte_flow *flow __rte_unused, + struct rte_flow_error *error __rte_unused) +{ + rte_errno = ENOTSUP; + return -rte_errno; +} + +static void +flow_null_remove(struct rte_eth_dev *dev __rte_unused, + struct rte_flow *flow __rte_unused) +{ +} + +static void +flow_null_destroy(struct rte_eth_dev *dev __rte_unused, + struct rte_flow *flow __rte_unused) +{ +} + +static int +flow_null_query(struct rte_eth_dev *dev __rte_unused, + struct rte_flow *flow __rte_unused, + const struct rte_flow_action *actions __rte_unused, + void *data __rte_unused, + struct rte_flow_error *error __rte_unused) +{ + rte_errno = ENOTSUP; + return -rte_errno; +} + +/* Void driver to protect from null pointer reference. */ +const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = { + .validate = flow_null_validate, + .prepare = flow_null_prepare, + .translate = flow_null_translate, + .apply = flow_null_apply, + .remove = flow_null_remove, + .destroy = flow_null_destroy, + .query = flow_null_query, +}; + +/** + * Select flow driver type according to flow attributes and device + * configuration. + * + * @param[in] dev + * Pointer to the dev structure. + * @param[in] attr + * Pointer to the flow attributes. + * + * @return + * flow driver type, MLX5_FLOW_TYPE_MAX otherwise. + */ +static enum mlx5_flow_drv_type +flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr) +{ + struct mlx5_priv *priv = dev->data->dev_private; + enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX; + + if (attr->transfer && !priv->config.dv_esw_en) + type = MLX5_FLOW_TYPE_TCF; + else + type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV : + MLX5_FLOW_TYPE_VERBS; + return type; +} + +#define flow_get_drv_ops(type) flow_drv_ops[type] + +/** + * Flow driver validation API. This abstracts calling driver specific functions. + * The type of flow driver is determined according to flow attributes. + * + * @param[in] dev + * Pointer to the dev structure. + * @param[in] attr + * Pointer to the flow attributes. + * @param[in] items + * Pointer to the list of items. + * @param[in] actions + * Pointer to the list of actions. + * @param[out] error + * Pointer to the error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static inline int +flow_drv_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) +{ + const struct mlx5_flow_driver_ops *fops; + enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr); + + fops = flow_get_drv_ops(type); + return fops->validate(dev, attr, items, actions, error); +} + +/** + * Flow driver preparation API. This abstracts calling driver specific + * functions. Parent flow (rte_flow) should have driver type (drv_type). It + * calculates the size of memory required for device flow, allocates the memory, + * initializes the device flow and returns the pointer. + * + * @note + * This function initializes device flow structure such as dv, tcf or verbs in + * struct mlx5_flow. However, it is caller's responsibility to initialize the + * rest. For example, adding returning device flow to flow->dev_flow list and + * setting backward reference to the flow should be done out of this function. + * layers field is not filled either. + * + * @param[in] attr + * Pointer to the flow attributes. + * @param[in] items + * Pointer to the list of items. + * @param[in] actions + * Pointer to the list of actions. + * @param[out] error + * Pointer to the error structure. + * + * @return + * Pointer to device flow on success, otherwise NULL and rte_errno is set. + */ +static inline struct mlx5_flow * +flow_drv_prepare(const struct rte_flow *flow, + const struct rte_flow_attr *attr, + const struct rte_flow_item items[], + const struct rte_flow_action actions[], + struct rte_flow_error *error) +{ + const struct mlx5_flow_driver_ops *fops; + enum mlx5_flow_drv_type type = flow->drv_type; + + assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX); + fops = flow_get_drv_ops(type); + return fops->prepare(attr, items, actions, error); +} + +/** + * Flow driver translation API. This abstracts calling driver specific + * functions. Parent flow (rte_flow) should have driver type (drv_type). It + * translates a generic flow into a driver flow. flow_drv_prepare() must + * precede. + * + * @note + * dev_flow->layers could be filled as a result of parsing during translation + * if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled + * if necessary. As a flow can have multiple dev_flows by RSS flow expansion, + * flow->actions could be overwritten even though all the expanded dev_flows + * have the same actions. + * + * @param[in] dev + * Pointer to the rte dev structure. + * @param[in, out] dev_flow + * Pointer to the mlx5 flow. + * @param[in] attr + * Pointer to the flow attributes. + * @param[in] items + * Pointer to the list of items. + * @param[in] actions + * Pointer to the list of actions. + * @param[out] error + * Pointer to the error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static inline int +flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow, + const struct rte_flow_attr *attr, + const struct rte_flow_item items[], + const struct rte_flow_action actions[], + struct rte_flow_error *error) +{ + const struct mlx5_flow_driver_ops *fops; + enum mlx5_flow_drv_type type = dev_flow->flow->drv_type; + + assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX); + fops = flow_get_drv_ops(type); + return fops->translate(dev, dev_flow, attr, items, actions, error); +} + +/** + * Flow driver apply API. This abstracts calling driver specific functions. + * Parent flow (rte_flow) should have driver type (drv_type). It applies + * translated driver flows on to device. flow_drv_translate() must precede. + * + * @param[in] dev + * Pointer to Ethernet device structure. + * @param[in, out] flow + * Pointer to flow structure. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static inline int +flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow, + struct rte_flow_error *error) +{ + const struct mlx5_flow_driver_ops *fops; + enum mlx5_flow_drv_type type = flow->drv_type; + + assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX); + fops = flow_get_drv_ops(type); + return fops->apply(dev, flow, error); +} + +/** + * Flow driver remove API. This abstracts calling driver specific functions. + * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow + * on device. All the resources of the flow should be freed by calling + * flow_drv_destroy(). + * + * @param[in] dev + * Pointer to Ethernet device. + * @param[in, out] flow + * Pointer to flow structure. + */ +static inline void +flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + const struct mlx5_flow_driver_ops *fops; + enum mlx5_flow_drv_type type = flow->drv_type; + + assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX); + fops = flow_get_drv_ops(type); + fops->remove(dev, flow); +} + +/** + * Flow driver destroy API. This abstracts calling driver specific functions. + * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow + * on device and releases resources of the flow. + * + * @param[in] dev + * Pointer to Ethernet device. + * @param[in, out] flow + * Pointer to flow structure. + */ +static inline void +flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + const struct mlx5_flow_driver_ops *fops; + enum mlx5_flow_drv_type type = flow->drv_type; + + assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX); + fops = flow_get_drv_ops(type); + fops->destroy(dev, flow); +} + +/** + * 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) +{ + int ret; + + ret = flow_drv_validate(dev, attr, items, actions, error); + if (ret < 0) + return ret; + return 0; +} + +/** + * Get RSS action from the action list. + * + * @param[in] actions + * Pointer to the list of actions. + * + * @return + * Pointer to the RSS action if exist, else return NULL. + */ +static const struct rte_flow_action_rss* +flow_get_rss_action(const struct rte_flow_action actions[]) +{ + for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) { + switch (actions->type) { + case RTE_FLOW_ACTION_TYPE_RSS: + return (const struct rte_flow_action_rss *) + actions->conf; + default: + break; + } + } + return NULL; +} + +static unsigned int +find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level) +{ + const struct rte_flow_item *item; + unsigned int has_vlan = 0; + + for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) { + if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) { + has_vlan = 1; + break; + } + } + if (has_vlan) + return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN : + MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN; + return rss_level < 2 ? MLX5_EXPANSION_ROOT : + MLX5_EXPANSION_ROOT_OUTER; +} + +/** + * Create a flow and add it to @p list. + * + * @param dev + * Pointer to Ethernet device. + * @param list + * Pointer to a TAILQ flow list. + * @param[in] attr + * Flow rule attributes. + * @param[in] items + * 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 and rte_errno is set. + */ +static struct rte_flow * +flow_list_create(struct rte_eth_dev *dev, 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 *flow = NULL; + struct mlx5_flow *dev_flow; + const struct rte_flow_action_rss *rss; + union { + struct rte_flow_expand_rss buf; + uint8_t buffer[2048]; + } expand_buffer; + struct rte_flow_expand_rss *buf = &expand_buffer.buf; + int ret; + uint32_t i; + uint32_t flow_size; + + ret = flow_drv_validate(dev, attr, items, actions, error); + if (ret < 0) + return NULL; + flow_size = sizeof(struct rte_flow); + rss = flow_get_rss_action(actions); + if (rss) + flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t), + sizeof(void *)); + else + flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *)); + flow = rte_calloc(__func__, 1, flow_size, 0); + flow->drv_type = flow_get_drv_type(dev, attr); + flow->ingress = attr->ingress; + flow->transfer = attr->transfer; + assert(flow->drv_type > MLX5_FLOW_TYPE_MIN && + flow->drv_type < MLX5_FLOW_TYPE_MAX); + flow->queue = (void *)(flow + 1); + LIST_INIT(&flow->dev_flows); + if (rss && rss->types) { + unsigned int graph_root; + + graph_root = find_graph_root(items, rss->level); + ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer), + items, rss->types, + mlx5_support_expansion, + graph_root); + assert(ret > 0 && + (unsigned int)ret < sizeof(expand_buffer.buffer)); + } else { + buf->entries = 1; + buf->entry[0].pattern = (void *)(uintptr_t)items; + } + for (i = 0; i < buf->entries; ++i) { + dev_flow = flow_drv_prepare(flow, attr, buf->entry[i].pattern, + actions, error); + if (!dev_flow) + goto error; + dev_flow->flow = flow; + LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next); + ret = flow_drv_translate(dev, dev_flow, attr, + buf->entry[i].pattern, + actions, error); + if (ret < 0) + goto error; + } + if (dev->data->dev_started) { + ret = flow_drv_apply(dev, flow, error); + if (ret < 0) + goto error; + } + TAILQ_INSERT_TAIL(list, flow, next); + flow_rxq_flags_set(dev, flow); + return flow; +error: + ret = rte_errno; /* Save rte_errno before cleanup. */ + assert(flow); + flow_drv_destroy(dev, flow); + rte_free(flow); + rte_errno = ret; /* Restore rte_errno. */ + 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 mlx5_priv *priv = (struct mlx5_priv *)dev->data->dev_private; + + return flow_list_create(dev, &priv->flows, + attr, items, actions, error); +} + +/** + * Destroy a flow in a list. + * + * @param dev + * Pointer to Ethernet device. + * @param list + * Pointer to a TAILQ flow list. + * @param[in] flow + * Flow to destroy. + */ +static void +flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list, + struct rte_flow *flow) +{ + /* + * Update RX queue flags only if port is started, otherwise it is + * already clean. + */ + if (dev->data->dev_started) + flow_rxq_flags_trim(dev, flow); + flow_drv_destroy(dev, flow); + TAILQ_REMOVE(list, flow, next); + rte_free(flow->fdir); + rte_free(flow); +} + +/** + * Destroy all flows. + * + * @param dev + * Pointer to Ethernet device. + * @param list + * Pointer to a TAILQ flow list. + */ +void +mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list) +{ + while (!TAILQ_EMPTY(list)) { + struct rte_flow *flow; + + flow = TAILQ_FIRST(list); + flow_list_destroy(dev, list, flow); + } +} + +/** + * Remove all flows. + * + * @param dev + * Pointer to Ethernet device. + * @param list + * Pointer to a TAILQ flow list. + */ +void +mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list) +{ + struct rte_flow *flow; + + TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) + flow_drv_remove(dev, flow); + flow_rxq_flags_clear(dev); +} + +/** + * Add all flows. + * + * @param dev + * Pointer to Ethernet device. + * @param list + * Pointer to a TAILQ flow list. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list) +{ + struct rte_flow *flow; + struct rte_flow_error error; + int ret = 0; + + TAILQ_FOREACH(flow, list, next) { + ret = flow_drv_apply(dev, flow, &error); + if (ret < 0) + goto error; + flow_rxq_flags_set(dev, flow); + } + return 0; +error: + ret = rte_errno; /* Save rte_errno before cleanup. */ + mlx5_flow_stop(dev, list); + rte_errno = ret; /* Restore rte_errno. */ + return -rte_errno; +} + +/** + * Verify the flow list is empty + * + * @param dev + * Pointer to Ethernet device. + * + * @return the number of flows not released. + */ +int +mlx5_flow_verify(struct rte_eth_dev *dev) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct rte_flow *flow; + int ret = 0; + + TAILQ_FOREACH(flow, &priv->flows, next) { + DRV_LOG(DEBUG, "port %u flow %p still referenced", + dev->data->port_id, (void *)flow); + ++ret; + } + return ret; +} + +/** + * Enable a control flow configured from the control plane. + * + * @param dev + * Pointer to Ethernet device. + * @param eth_spec + * An Ethernet flow spec to apply. + * @param eth_mask + * An Ethernet flow mask to apply. + * @param vlan_spec + * A VLAN flow spec to apply. + * @param vlan_mask + * A VLAN flow mask to apply. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev, + struct rte_flow_item_eth *eth_spec, + struct rte_flow_item_eth *eth_mask, + struct rte_flow_item_vlan *vlan_spec, + struct rte_flow_item_vlan *vlan_mask) +{ + struct mlx5_priv *priv = dev->data->dev_private; + const struct rte_flow_attr attr = { + .ingress = 1, + .priority = MLX5_FLOW_PRIO_RSVD, + }; + struct rte_flow_item items[] = { + { + .type = RTE_FLOW_ITEM_TYPE_ETH, + .spec = eth_spec, + .last = NULL, + .mask = eth_mask, + }, + { + .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN : + RTE_FLOW_ITEM_TYPE_END, + .spec = vlan_spec, + .last = NULL, + .mask = vlan_mask, + }, + { + .type = RTE_FLOW_ITEM_TYPE_END, + }, + }; + uint16_t queue[priv->reta_idx_n]; + struct rte_flow_action_rss action_rss = { + .func = RTE_ETH_HASH_FUNCTION_DEFAULT, + .level = 0, + .types = priv->rss_conf.rss_hf, + .key_len = priv->rss_conf.rss_key_len, + .queue_num = priv->reta_idx_n, + .key = priv->rss_conf.rss_key, + .queue = queue, + }; + struct rte_flow_action actions[] = { + { + .type = RTE_FLOW_ACTION_TYPE_RSS, + .conf = &action_rss, + }, + { + .type = RTE_FLOW_ACTION_TYPE_END, + }, + }; + struct rte_flow *flow; + struct rte_flow_error error; + unsigned int i; + + if (!priv->reta_idx_n || !priv->rxqs_n) { + return 0; + } + for (i = 0; i != priv->reta_idx_n; ++i) + queue[i] = (*priv->reta_idx)[i]; + flow = flow_list_create(dev, &priv->ctrl_flows, + &attr, items, actions, &error); + if (!flow) + return -rte_errno; + return 0; +} + +/** + * Enable a flow control configured from the control plane. + * + * @param dev + * Pointer to Ethernet device. + * @param eth_spec + * An Ethernet flow spec to apply. + * @param eth_mask + * An Ethernet flow mask to apply. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_ctrl_flow(struct rte_eth_dev *dev, + struct rte_flow_item_eth *eth_spec, + struct rte_flow_item_eth *eth_mask) +{ + return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL); +} + +/** + * 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 __rte_unused) +{ + struct mlx5_priv *priv = dev->data->dev_private; + + flow_list_destroy(dev, &priv->flows, flow); + return 0; +} + +/** + * 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 __rte_unused) +{ + struct mlx5_priv *priv = dev->data->dev_private; + + mlx5_flow_list_flush(dev, &priv->flows); + 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 mlx5_priv *priv = dev->data->dev_private; + + if (dev->data->dev_started) { + rte_flow_error_set(error, EBUSY, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "port must be stopped first"); + return -rte_errno; + } + priv->isolated = !!enable; + if (enable) + dev->dev_ops = &mlx5_dev_ops_isolate; + else + dev->dev_ops = &mlx5_dev_ops; + return 0; +} + +/** + * Query a flow. + * + * @see rte_flow_query() + * @see rte_flow_ops + */ +static int +flow_drv_query(struct rte_eth_dev *dev, + struct rte_flow *flow, + const struct rte_flow_action *actions, + void *data, + struct rte_flow_error *error) +{ + const struct mlx5_flow_driver_ops *fops; + enum mlx5_flow_drv_type ftype = flow->drv_type; + + assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX); + fops = flow_get_drv_ops(ftype); + + return fops->query(dev, flow, actions, data, error); +} + +/** + * Query a flow. + * + * @see rte_flow_query() + * @see rte_flow_ops + */ +int +mlx5_flow_query(struct rte_eth_dev *dev, + struct rte_flow *flow, + const struct rte_flow_action *actions, + void *data, + struct rte_flow_error *error) +{ + int ret; + + ret = flow_drv_query(dev, flow, actions, data, error); + if (ret < 0) + return ret; + return 0; +} + +/** + * Convert a flow director filter to a generic flow. + * + * @param dev + * Pointer to Ethernet device. + * @param fdir_filter + * Flow director filter to add. + * @param attributes + * Generic flow parameters structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +flow_fdir_filter_convert(struct rte_eth_dev *dev, + const struct rte_eth_fdir_filter *fdir_filter, + struct mlx5_fdir *attributes) +{ + struct mlx5_priv *priv = dev->data->dev_private; + const struct rte_eth_fdir_input *input = &fdir_filter->input; + const struct rte_eth_fdir_masks *mask = + &dev->data->dev_conf.fdir_conf.mask; + + /* Validate queue number. */ + if (fdir_filter->action.rx_queue >= priv->rxqs_n) { + DRV_LOG(ERR, "port %u invalid queue number %d", + dev->data->port_id, fdir_filter->action.rx_queue); + rte_errno = EINVAL; + return -rte_errno; + } + attributes->attr.ingress = 1; + attributes->items[0] = (struct rte_flow_item) { + .type = RTE_FLOW_ITEM_TYPE_ETH, + .spec = &attributes->l2, + .mask = &attributes->l2_mask, + }; + switch (fdir_filter->action.behavior) { + case RTE_ETH_FDIR_ACCEPT: + attributes->actions[0] = (struct rte_flow_action){ + .type = RTE_FLOW_ACTION_TYPE_QUEUE, + .conf = &attributes->queue, + }; + break; + case RTE_ETH_FDIR_REJECT: + attributes->actions[0] = (struct rte_flow_action){ + .type = RTE_FLOW_ACTION_TYPE_DROP, + }; + break; + default: + DRV_LOG(ERR, "port %u invalid behavior %d", + dev->data->port_id, + fdir_filter->action.behavior); + rte_errno = ENOTSUP; + return -rte_errno; + } + attributes->queue.index = fdir_filter->action.rx_queue; + /* Handle L3. */ + switch (fdir_filter->input.flow_type) { + case RTE_ETH_FLOW_NONFRAG_IPV4_UDP: + case RTE_ETH_FLOW_NONFRAG_IPV4_TCP: + case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER: + attributes->l3.ipv4.hdr = (struct ipv4_hdr){ + .src_addr = input->flow.ip4_flow.src_ip, + .dst_addr = input->flow.ip4_flow.dst_ip, + .time_to_live = input->flow.ip4_flow.ttl, + .type_of_service = input->flow.ip4_flow.tos, + }; + attributes->l3_mask.ipv4.hdr = (struct ipv4_hdr){ + .src_addr = mask->ipv4_mask.src_ip, + .dst_addr = mask->ipv4_mask.dst_ip, + .time_to_live = mask->ipv4_mask.ttl, + .type_of_service = mask->ipv4_mask.tos, + .next_proto_id = mask->ipv4_mask.proto, + }; + attributes->items[1] = (struct rte_flow_item){ + .type = RTE_FLOW_ITEM_TYPE_IPV4, + .spec = &attributes->l3, + .mask = &attributes->l3_mask, + }; + break; + case RTE_ETH_FLOW_NONFRAG_IPV6_UDP: + case RTE_ETH_FLOW_NONFRAG_IPV6_TCP: + case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER: + attributes->l3.ipv6.hdr = (struct ipv6_hdr){ + .hop_limits = input->flow.ipv6_flow.hop_limits, + .proto = input->flow.ipv6_flow.proto, + }; + + memcpy(attributes->l3.ipv6.hdr.src_addr, + input->flow.ipv6_flow.src_ip, + RTE_DIM(attributes->l3.ipv6.hdr.src_addr)); + memcpy(attributes->l3.ipv6.hdr.dst_addr, + input->flow.ipv6_flow.dst_ip, + RTE_DIM(attributes->l3.ipv6.hdr.src_addr)); + memcpy(attributes->l3_mask.ipv6.hdr.src_addr, + mask->ipv6_mask.src_ip, + RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr)); + memcpy(attributes->l3_mask.ipv6.hdr.dst_addr, + mask->ipv6_mask.dst_ip, + RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr)); + attributes->items[1] = (struct rte_flow_item){ + .type = RTE_FLOW_ITEM_TYPE_IPV6, + .spec = &attributes->l3, + .mask = &attributes->l3_mask, + }; + break; + default: + DRV_LOG(ERR, "port %u invalid flow type%d", + dev->data->port_id, fdir_filter->input.flow_type); + rte_errno = ENOTSUP; + return -rte_errno; + } + /* Handle L4. */ + switch (fdir_filter->input.flow_type) { + case RTE_ETH_FLOW_NONFRAG_IPV4_UDP: + attributes->l4.udp.hdr = (struct udp_hdr){ + .src_port = input->flow.udp4_flow.src_port, + .dst_port = input->flow.udp4_flow.dst_port, + }; + attributes->l4_mask.udp.hdr = (struct udp_hdr){ + .src_port = mask->src_port_mask, + .dst_port = mask->dst_port_mask, + }; + attributes->items[2] = (struct rte_flow_item){ + .type = RTE_FLOW_ITEM_TYPE_UDP, + .spec = &attributes->l4, + .mask = &attributes->l4_mask, + }; + break; + case RTE_ETH_FLOW_NONFRAG_IPV4_TCP: + attributes->l4.tcp.hdr = (struct tcp_hdr){ + .src_port = input->flow.tcp4_flow.src_port, + .dst_port = input->flow.tcp4_flow.dst_port, + }; + attributes->l4_mask.tcp.hdr = (struct tcp_hdr){ + .src_port = mask->src_port_mask, + .dst_port = mask->dst_port_mask, + }; + attributes->items[2] = (struct rte_flow_item){ + .type = RTE_FLOW_ITEM_TYPE_TCP, + .spec = &attributes->l4, + .mask = &attributes->l4_mask, + }; + break; + case RTE_ETH_FLOW_NONFRAG_IPV6_UDP: + attributes->l4.udp.hdr = (struct udp_hdr){ + .src_port = input->flow.udp6_flow.src_port, + .dst_port = input->flow.udp6_flow.dst_port, + }; + attributes->l4_mask.udp.hdr = (struct udp_hdr){ + .src_port = mask->src_port_mask, + .dst_port = mask->dst_port_mask, + }; + attributes->items[2] = (struct rte_flow_item){ + .type = RTE_FLOW_ITEM_TYPE_UDP, + .spec = &attributes->l4, + .mask = &attributes->l4_mask, + }; + break; + case RTE_ETH_FLOW_NONFRAG_IPV6_TCP: + attributes->l4.tcp.hdr = (struct tcp_hdr){ + .src_port = input->flow.tcp6_flow.src_port, + .dst_port = input->flow.tcp6_flow.dst_port, + }; + attributes->l4_mask.tcp.hdr = (struct tcp_hdr){ + .src_port = mask->src_port_mask, + .dst_port = mask->dst_port_mask, + }; + attributes->items[2] = (struct rte_flow_item){ + .type = RTE_FLOW_ITEM_TYPE_TCP, + .spec = &attributes->l4, + .mask = &attributes->l4_mask, + }; + break; + case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER: + case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER: + break; + default: + DRV_LOG(ERR, "port %u invalid flow type%d", + dev->data->port_id, fdir_filter->input.flow_type); + rte_errno = ENOTSUP; + return -rte_errno; + } + return 0; +} + +#define FLOW_FDIR_CMP(f1, f2, fld) \ + memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld)) + +/** + * Compare two FDIR flows. If items and actions are identical, the two flows are + * regarded as same. + * + * @param dev + * Pointer to Ethernet device. + * @param f1 + * FDIR flow to compare. + * @param f2 + * FDIR flow to compare. + * + * @return + * Zero on match, 1 otherwise. + */ +static int +flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2) +{ + if (FLOW_FDIR_CMP(f1, f2, attr) || + FLOW_FDIR_CMP(f1, f2, l2) || + FLOW_FDIR_CMP(f1, f2, l2_mask) || + FLOW_FDIR_CMP(f1, f2, l3) || + FLOW_FDIR_CMP(f1, f2, l3_mask) || + FLOW_FDIR_CMP(f1, f2, l4) || + FLOW_FDIR_CMP(f1, f2, l4_mask) || + FLOW_FDIR_CMP(f1, f2, actions[0].type)) + return 1; + if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE && + FLOW_FDIR_CMP(f1, f2, queue)) + return 1; + return 0; +} + +/** + * Search device flow list to find out a matched FDIR flow. + * + * @param dev + * Pointer to Ethernet device. + * @param fdir_flow + * FDIR flow to lookup. + * + * @return + * Pointer of flow if found, NULL otherwise. + */ +static struct rte_flow * +flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct rte_flow *flow = NULL; + + assert(fdir_flow); + TAILQ_FOREACH(flow, &priv->flows, next) { + if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) { + DRV_LOG(DEBUG, "port %u found FDIR flow %p", + dev->data->port_id, (void *)flow); + break; + } + } + return flow; +} + +/** + * Add new flow director filter and store it in list. + * + * @param dev + * Pointer to Ethernet device. + * @param fdir_filter + * Flow director filter to add. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +flow_fdir_filter_add(struct rte_eth_dev *dev, + const struct rte_eth_fdir_filter *fdir_filter) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct mlx5_fdir *fdir_flow; + struct rte_flow *flow; + int ret; + + fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0); + if (!fdir_flow) { + rte_errno = ENOMEM; + return -rte_errno; + } + ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow); + if (ret) + goto error; + flow = flow_fdir_filter_lookup(dev, fdir_flow); + if (flow) { + rte_errno = EEXIST; + goto error; + } + flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr, + fdir_flow->items, fdir_flow->actions, NULL); + if (!flow) + goto error; + assert(!flow->fdir); + flow->fdir = fdir_flow; + DRV_LOG(DEBUG, "port %u created FDIR flow %p", + dev->data->port_id, (void *)flow); + return 0; +error: + rte_free(fdir_flow); + return -rte_errno; +} + +/** + * Delete specific filter. + * + * @param dev + * Pointer to Ethernet device. + * @param fdir_filter + * Filter to be deleted. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +flow_fdir_filter_delete(struct rte_eth_dev *dev, + const struct rte_eth_fdir_filter *fdir_filter) +{ + struct mlx5_priv *priv = dev->data->dev_private; + struct rte_flow *flow; + struct mlx5_fdir fdir_flow = { + .attr.group = 0, + }; + int ret; + + ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow); + if (ret) + return -rte_errno; + flow = flow_fdir_filter_lookup(dev, &fdir_flow); + if (!flow) { + rte_errno = ENOENT; + return -rte_errno; + } + flow_list_destroy(dev, &priv->flows, flow); + DRV_LOG(DEBUG, "port %u deleted FDIR flow %p", + dev->data->port_id, (void *)flow); + return 0; +} + +/** + * Update queue for specific filter. + * + * @param dev + * Pointer to Ethernet device. + * @param fdir_filter + * Filter to be updated. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +flow_fdir_filter_update(struct rte_eth_dev *dev, + const struct rte_eth_fdir_filter *fdir_filter) +{ + int ret; + + ret = flow_fdir_filter_delete(dev, fdir_filter); + if (ret) + return ret; + return flow_fdir_filter_add(dev, fdir_filter); +} + +/** + * Flush all filters. + * + * @param dev + * Pointer to Ethernet device. + */ +static void +flow_fdir_filter_flush(struct rte_eth_dev *dev) +{ + struct mlx5_priv *priv = dev->data->dev_private; + + mlx5_flow_list_flush(dev, &priv->flows); +} + +/** + * Get flow director information. + * + * @param dev + * Pointer to Ethernet device. + * @param[out] fdir_info + * Resulting flow director information. + */ +static void +flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info) +{ + struct rte_eth_fdir_masks *mask = + &dev->data->dev_conf.fdir_conf.mask; + + fdir_info->mode = 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 dev + * Pointer to Ethernet device. + * @param filter_op + * Operation to perform. + * @param arg + * Pointer to operation-specific structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op, + void *arg) +{ + enum rte_fdir_mode fdir_mode = + dev->data->dev_conf.fdir_conf.mode; + + if (filter_op == RTE_ETH_FILTER_NOP) + return 0; + if (fdir_mode != RTE_FDIR_MODE_PERFECT && + fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) { + DRV_LOG(ERR, "port %u flow director mode %d not supported", + dev->data->port_id, fdir_mode); + rte_errno = EINVAL; + return -rte_errno; + } + switch (filter_op) { + case RTE_ETH_FILTER_ADD: + return flow_fdir_filter_add(dev, arg); + case RTE_ETH_FILTER_UPDATE: + return flow_fdir_filter_update(dev, arg); + case RTE_ETH_FILTER_DELETE: + return flow_fdir_filter_delete(dev, arg); + case RTE_ETH_FILTER_FLUSH: + flow_fdir_filter_flush(dev); + break; + case RTE_ETH_FILTER_INFO: + flow_fdir_info_get(dev, arg); + break; + default: + DRV_LOG(DEBUG, "port %u unknown operation %u", + dev->data->port_id, filter_op); + rte_errno = EINVAL; + return -rte_errno; + } + return 0; +} + +/** + * 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, a negative errno value otherwise and rte_errno is set. + */ +int +mlx5_dev_filter_ctrl(struct rte_eth_dev *dev, + enum rte_filter_type filter_type, + enum rte_filter_op filter_op, + void *arg) +{ + switch (filter_type) { + case RTE_ETH_FILTER_GENERIC: + if (filter_op != RTE_ETH_FILTER_GET) { + rte_errno = EINVAL; + return -rte_errno; + } + *(const void **)arg = &mlx5_flow_ops; + return 0; + case RTE_ETH_FILTER_FDIR: + return flow_fdir_ctrl_func(dev, filter_op, arg); + default: + DRV_LOG(ERR, "port %u filter type (%d) not supported", + dev->data->port_id, filter_type); + rte_errno = ENOTSUP; + return -rte_errno; + } + return 0; +} |