diff options
Diffstat (limited to 'src/spdk/dpdk/drivers/net/mlx5/mlx5_flow.c')
| -rw-r--r-- | src/spdk/dpdk/drivers/net/mlx5/mlx5_flow.c | 3848 |
1 files changed, 3848 insertions, 0 deletions
diff --git a/src/spdk/dpdk/drivers/net/mlx5/mlx5_flow.c b/src/spdk/dpdk/drivers/net/mlx5/mlx5_flow.c new file mode 100644 index 00000000..ca4625b6 --- /dev/null +++ b/src/spdk/dpdk/drivers/net/mlx5/mlx5_flow.c @@ -0,0 +1,3848 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2016 6WIND S.A. + * Copyright 2016 Mellanox Technologies, Ltd + */ + +#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_eth_ctrl.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_prm.h" +#include "mlx5_glue.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; + +/* Pattern outer Layer bits. */ +#define MLX5_FLOW_LAYER_OUTER_L2 (1u << 0) +#define MLX5_FLOW_LAYER_OUTER_L3_IPV4 (1u << 1) +#define MLX5_FLOW_LAYER_OUTER_L3_IPV6 (1u << 2) +#define MLX5_FLOW_LAYER_OUTER_L4_UDP (1u << 3) +#define MLX5_FLOW_LAYER_OUTER_L4_TCP (1u << 4) +#define MLX5_FLOW_LAYER_OUTER_VLAN (1u << 5) + +/* Pattern inner Layer bits. */ +#define MLX5_FLOW_LAYER_INNER_L2 (1u << 6) +#define MLX5_FLOW_LAYER_INNER_L3_IPV4 (1u << 7) +#define MLX5_FLOW_LAYER_INNER_L3_IPV6 (1u << 8) +#define MLX5_FLOW_LAYER_INNER_L4_UDP (1u << 9) +#define MLX5_FLOW_LAYER_INNER_L4_TCP (1u << 10) +#define MLX5_FLOW_LAYER_INNER_VLAN (1u << 11) + +/* Pattern tunnel Layer bits. */ +#define MLX5_FLOW_LAYER_VXLAN (1u << 12) +#define MLX5_FLOW_LAYER_VXLAN_GPE (1u << 13) +#define MLX5_FLOW_LAYER_GRE (1u << 14) +#define MLX5_FLOW_LAYER_MPLS (1u << 15) + +/* Outer Masks. */ +#define MLX5_FLOW_LAYER_OUTER_L3 \ + (MLX5_FLOW_LAYER_OUTER_L3_IPV4 | MLX5_FLOW_LAYER_OUTER_L3_IPV6) +#define MLX5_FLOW_LAYER_OUTER_L4 \ + (MLX5_FLOW_LAYER_OUTER_L4_UDP | MLX5_FLOW_LAYER_OUTER_L4_TCP) +#define MLX5_FLOW_LAYER_OUTER \ + (MLX5_FLOW_LAYER_OUTER_L2 | MLX5_FLOW_LAYER_OUTER_L3 | \ + MLX5_FLOW_LAYER_OUTER_L4) + +/* Tunnel Masks. */ +#define MLX5_FLOW_LAYER_TUNNEL \ + (MLX5_FLOW_LAYER_VXLAN | MLX5_FLOW_LAYER_VXLAN_GPE | \ + MLX5_FLOW_LAYER_GRE | MLX5_FLOW_LAYER_MPLS) + +/* Inner Masks. */ +#define MLX5_FLOW_LAYER_INNER_L3 \ + (MLX5_FLOW_LAYER_INNER_L3_IPV4 | MLX5_FLOW_LAYER_INNER_L3_IPV6) +#define MLX5_FLOW_LAYER_INNER_L4 \ + (MLX5_FLOW_LAYER_INNER_L4_UDP | MLX5_FLOW_LAYER_INNER_L4_TCP) +#define MLX5_FLOW_LAYER_INNER \ + (MLX5_FLOW_LAYER_INNER_L2 | MLX5_FLOW_LAYER_INNER_L3 | \ + MLX5_FLOW_LAYER_INNER_L4) + +/* Actions that modify the fate of matching traffic. */ +#define MLX5_FLOW_FATE_DROP (1u << 0) +#define MLX5_FLOW_FATE_QUEUE (1u << 1) +#define MLX5_FLOW_FATE_RSS (1u << 2) + +/* Modify a packet. */ +#define MLX5_FLOW_MOD_FLAG (1u << 0) +#define MLX5_FLOW_MOD_MARK (1u << 1) +#define MLX5_FLOW_MOD_COUNT (1u << 2) + +/* possible L3 layers protocols filtering. */ +#define MLX5_IP_PROTOCOL_TCP 6 +#define MLX5_IP_PROTOCOL_UDP 17 +#define MLX5_IP_PROTOCOL_GRE 47 +#define MLX5_IP_PROTOCOL_MPLS 147 + +/* Priority reserved for default flows. */ +#define MLX5_FLOW_PRIO_RSVD ((uint32_t)-1) + +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, + }, +}; + +/** Handles information leading to a drop fate. */ +struct mlx5_flow_verbs { + LIST_ENTRY(mlx5_flow_verbs) next; + unsigned int size; /**< Size of the attribute. */ + struct { + struct ibv_flow_attr *attr; + /**< Pointer to the Specification buffer. */ + uint8_t *specs; /**< Pointer to the specifications. */ + }; + struct ibv_flow *flow; /**< Verbs flow pointer. */ + struct mlx5_hrxq *hrxq; /**< Hash Rx queue object. */ + uint64_t hash_fields; /**< Verbs hash Rx queue hash fields. */ +}; + +/* Counters information. */ +struct mlx5_flow_counter { + LIST_ENTRY(mlx5_flow_counter) next; /**< Pointer to the next counter. */ + uint32_t shared:1; /**< Share counter ID with other flow rules. */ + uint32_t ref_cnt:31; /**< Reference counter. */ + uint32_t id; /**< Counter ID. */ + struct ibv_counter_set *cs; /**< Holds the counters for the rule. */ + uint64_t hits; /**< Number of packets matched by the rule. */ + uint64_t bytes; /**< Number of bytes matched by the rule. */ +}; + +/* Flow structure. */ +struct rte_flow { + TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */ + struct rte_flow_attr attributes; /**< User flow attribute. */ + uint32_t l3_protocol_en:1; /**< Protocol filtering requested. */ + uint32_t layers; + /**< Bit-fields of present layers see MLX5_FLOW_LAYER_*. */ + uint32_t modifier; + /**< Bit-fields of present modifier see MLX5_FLOW_MOD_*. */ + uint32_t fate; + /**< Bit-fields of present fate see MLX5_FLOW_FATE_*. */ + uint8_t l3_protocol; /**< valid when l3_protocol_en is set. */ + LIST_HEAD(verbs, mlx5_flow_verbs) verbs; /**< Verbs flows list. */ + struct mlx5_flow_verbs *cur_verbs; + /**< Current Verbs flow structure being filled. */ + struct mlx5_flow_counter *counter; /**< Holds Verbs flow counter. */ + struct rte_flow_action_rss rss;/**< RSS context. */ + uint8_t key[MLX5_RSS_HASH_KEY_LEN]; /**< RSS hash key. */ + uint16_t (*queue)[]; /**< Destination queues to redirect traffic to. */ + void *nl_flow; /**< Netlink flow buffer if relevant. */ +}; + +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_action actions[2]; + 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_queue queue; +}; + +/* Verbs specification header. */ +struct ibv_spec_header { + enum ibv_flow_spec_type type; + uint16_t size; +}; + +/* + * Number of sub priorities. + * For each kind of pattern matching i.e. L2, L3, L4 to have a correct + * matching on the NIC (firmware dependent) L4 most have the higher priority + * followed by L3 and ending with L2. + */ +#define MLX5_PRIORITY_MAP_L2 2 +#define MLX5_PRIORITY_MAP_L3 1 +#define MLX5_PRIORITY_MAP_L4 0 +#define MLX5_PRIORITY_MAP_MAX 3 + +/* 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 { + uint32_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_GRE | 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 Ethernet device. + * + * @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 { + 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, + }, + .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]; + } + 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, vprio[i]); + return -rte_errno; + } + mlx5_hrxq_drop_release(dev); + DRV_LOG(INFO, "port %u flow maximum priority: %d", + dev->data->port_id, priority); + return priority; +} + +/** + * Adjust flow priority. + * + * @param dev + * Pointer to Ethernet device. + * @param flow + * Pointer to an rte flow. + */ +static void +mlx5_flow_adjust_priority(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + struct priv *priv = dev->data->dev_private; + uint32_t priority = flow->attributes.priority; + uint32_t subpriority = flow->cur_verbs->attr->priority; + + switch (priv->config.flow_prio) { + case RTE_DIM(priority_map_3): + priority = priority_map_3[priority][subpriority]; + break; + case RTE_DIM(priority_map_5): + priority = priority_map_5[priority][subpriority]; + break; + } + flow->cur_verbs->attr->priority = priority; +} + +/** + * Get a flow counter. + * + * @param[in] dev + * Pointer to Ethernet device. + * @param[in] shared + * Indicate if this counter is shared with other flows. + * @param[in] id + * Counter identifier. + * + * @return + * A pointer to the counter, NULL otherwise and rte_errno is set. + */ +static struct mlx5_flow_counter * +mlx5_flow_counter_new(struct rte_eth_dev *dev, uint32_t shared, uint32_t id) +{ + struct priv *priv = dev->data->dev_private; + struct mlx5_flow_counter *cnt; + + LIST_FOREACH(cnt, &priv->flow_counters, next) { + if (!cnt->shared || cnt->shared != shared) + continue; + if (cnt->id != id) + continue; + cnt->ref_cnt++; + return cnt; + } +#ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT + + struct mlx5_flow_counter tmpl = { + .shared = shared, + .id = id, + .cs = mlx5_glue->create_counter_set + (priv->ctx, + &(struct ibv_counter_set_init_attr){ + .counter_set_id = id, + }), + .hits = 0, + .bytes = 0, + }; + + if (!tmpl.cs) { + rte_errno = errno; + return NULL; + } + cnt = rte_calloc(__func__, 1, sizeof(*cnt), 0); + if (!cnt) { + rte_errno = ENOMEM; + return NULL; + } + *cnt = tmpl; + LIST_INSERT_HEAD(&priv->flow_counters, cnt, next); + return cnt; +#endif + rte_errno = ENOTSUP; + return NULL; +} + +/** + * Release a flow counter. + * + * @param[in] counter + * Pointer to the counter handler. + */ +static void +mlx5_flow_counter_release(struct mlx5_flow_counter *counter) +{ + if (--counter->ref_cnt == 0) { + claim_zero(mlx5_glue->destroy_counter_set(counter->cs)); + LIST_REMOVE(counter, next); + rte_free(counter); + } +} + +/** + * 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 Ethernet device. + * @param[in] attributes + * Pointer to flow attributes + * @param[in, out] flow + * Pointer to the rte_flow structure. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +mlx5_flow_attributes(struct rte_eth_dev *dev, + const struct rte_flow_attr *attributes, + struct rte_flow *flow, + struct rte_flow_error *error) +{ + uint32_t priority_max = + ((struct priv *)dev->data->dev_private)->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, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, + NULL, + "ingress attribute is mandatory"); + flow->attributes = *attributes; + if (attributes->priority == MLX5_FLOW_PRIO_RSVD) + flow->attributes.priority = priority_max; + return 0; +} + +/** + * 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. + */ +static 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, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "range is not supported"); + } + return 0; +} + +/** + * Add a verbs item specification into @p flow. + * + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] src + * Create specification. + * @param[in] size + * Size in bytes of the specification to copy. + */ +static void +mlx5_flow_spec_verbs_add(struct rte_flow *flow, void *src, unsigned int size) +{ + struct mlx5_flow_verbs *verbs = flow->cur_verbs; + + if (verbs->specs) { + void *dst; + + dst = (void *)(verbs->specs + verbs->size); + memcpy(dst, src, size); + ++verbs->attr->num_of_specs; + } + verbs->size += size; +} + +/** + * Adjust verbs hash fields according to the @p flow information. + * + * @param[in, out] flow. + * Pointer to flow structure. + * @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. + */ +static void +mlx5_flow_verbs_hashfields_adjust(struct rte_flow *flow, + int tunnel __rte_unused, + uint32_t layer_types, uint64_t hash_fields) +{ +#ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT + hash_fields |= (tunnel ? IBV_RX_HASH_INNER : 0); + if (flow->rss.level == 2 && !tunnel) + hash_fields = 0; + else if (flow->rss.level < 2 && tunnel) + hash_fields = 0; +#endif + if (!(flow->rss.types & layer_types)) + hash_fields = 0; + flow->cur_verbs->hash_fields |= hash_fields; +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_eth(const struct rte_flow_item *item, struct rte_flow *flow, + const size_t flow_size, struct rte_flow_error *error) +{ + const struct rte_flow_item_eth *spec = item->spec; + 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), + }; + const int tunnel = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL); + const unsigned int size = sizeof(struct ibv_flow_spec_eth); + struct ibv_flow_spec_eth eth = { + .type = IBV_FLOW_SPEC_ETH | (tunnel ? IBV_FLOW_SPEC_INNER : 0), + .size = size, + }; + int ret; + + if (flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L2 : + MLX5_FLOW_LAYER_OUTER_L2)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "L2 layers already configured"); + 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); + if (ret) + return ret; + flow->layers |= tunnel ? MLX5_FLOW_LAYER_INNER_L2 : + MLX5_FLOW_LAYER_OUTER_L2; + if (size > flow_size) + return size; + if (spec) { + unsigned int i; + + memcpy(ð.val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN); + memcpy(ð.val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN); + eth.val.ether_type = spec->type; + memcpy(ð.mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN); + memcpy(ð.mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN); + eth.mask.ether_type = mask->type; + /* Remove unwanted bits from values. */ + for (i = 0; i < ETHER_ADDR_LEN; ++i) { + eth.val.dst_mac[i] &= eth.mask.dst_mac[i]; + eth.val.src_mac[i] &= eth.mask.src_mac[i]; + } + eth.val.ether_type &= eth.mask.ether_type; + } + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L2; + mlx5_flow_spec_verbs_add(flow, ð, size); + return size; +} + +/** + * Update the VLAN tag in the Verbs Ethernet specification. + * + * @param[in, out] attr + * Pointer to Verbs attributes structure. + * @param[in] eth + * Verbs structure containing the VLAN information to copy. + */ +static void +mlx5_flow_item_vlan_update(struct ibv_flow_attr *attr, + struct ibv_flow_spec_eth *eth) +{ + unsigned int i; + const enum ibv_flow_spec_type search = eth->type; + struct ibv_spec_header *hdr = (struct ibv_spec_header *) + ((uint8_t *)attr + sizeof(struct ibv_flow_attr)); + + for (i = 0; i != attr->num_of_specs; ++i) { + if (hdr->type == search) { + struct ibv_flow_spec_eth *e = + (struct ibv_flow_spec_eth *)hdr; + + e->val.vlan_tag = eth->val.vlan_tag; + e->mask.vlan_tag = eth->mask.vlan_tag; + e->val.ether_type = eth->val.ether_type; + e->mask.ether_type = eth->mask.ether_type; + break; + } + hdr = (struct ibv_spec_header *)((uint8_t *)hdr + hdr->size); + } +} + +/** + * Convert the @p item into @p flow (or by updating the already present + * Ethernet Verbs) specification after ensuring the NIC will understand and + * process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_vlan(const struct rte_flow_item *item, struct rte_flow *flow, + const size_t flow_size, 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), + }; + unsigned int size = sizeof(struct ibv_flow_spec_eth); + const int tunnel = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL); + struct ibv_flow_spec_eth eth = { + .type = IBV_FLOW_SPEC_ETH | (tunnel ? IBV_FLOW_SPEC_INNER : 0), + .size = size, + }; + int ret; + const uint32_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 | + MLX5_FLOW_LAYER_INNER_L4) : + (MLX5_FLOW_LAYER_OUTER_L3 | MLX5_FLOW_LAYER_OUTER_L4); + const uint32_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN : + MLX5_FLOW_LAYER_OUTER_VLAN; + const uint32_t l2m = tunnel ? MLX5_FLOW_LAYER_INNER_L2 : + MLX5_FLOW_LAYER_OUTER_L2; + + if (flow->layers & vlanm) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "VLAN layer already configured"); + else if ((flow->layers & l34m) != 0) + return rte_flow_error_set(error, ENOTSUP, + 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) { + eth.val.vlan_tag = spec->tci; + eth.mask.vlan_tag = mask->tci; + eth.val.vlan_tag &= eth.mask.vlan_tag; + eth.val.ether_type = spec->inner_type; + eth.mask.ether_type = mask->inner_type; + eth.val.ether_type &= eth.mask.ether_type; + } + /* + * From verbs perspective an empty VLAN is equivalent + * to a packet without VLAN layer. + */ + if (!eth.mask.vlan_tag) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM_SPEC, + item->spec, + "VLAN cannot be empty"); + if (!(flow->layers & l2m)) { + if (size <= flow_size) { + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L2; + mlx5_flow_spec_verbs_add(flow, ð, size); + } + } else { + if (flow->cur_verbs) + mlx5_flow_item_vlan_update(flow->cur_verbs->attr, + ð); + size = 0; /* Only an update is done in eth specification. */ + } + flow->layers |= tunnel ? + (MLX5_FLOW_LAYER_INNER_L2 | MLX5_FLOW_LAYER_INNER_VLAN) : + (MLX5_FLOW_LAYER_OUTER_L2 | MLX5_FLOW_LAYER_OUTER_VLAN); + return size; +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_ipv4(const struct rte_flow_item *item, struct rte_flow *flow, + const size_t flow_size, struct rte_flow_error *error) +{ + const struct rte_flow_item_ipv4 *spec = item->spec; + 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 = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL); + unsigned int size = sizeof(struct ibv_flow_spec_ipv4_ext); + struct ibv_flow_spec_ipv4_ext ipv4 = { + .type = IBV_FLOW_SPEC_IPV4_EXT | + (tunnel ? IBV_FLOW_SPEC_INNER : 0), + .size = size, + }; + int ret; + + if (flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 : + MLX5_FLOW_LAYER_OUTER_L3)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "multiple L3 layers not supported"); + else if (flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 : + MLX5_FLOW_LAYER_OUTER_L4)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "L3 cannot follow an L4 layer."); + if (!mask) + mask = &rte_flow_item_ipv4_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&nic_mask, + sizeof(struct rte_flow_item_ipv4), error); + if (ret < 0) + return ret; + flow->layers |= tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 : + MLX5_FLOW_LAYER_OUTER_L3_IPV4; + if (spec) { + ipv4.val = (struct ibv_flow_ipv4_ext_filter){ + .src_ip = spec->hdr.src_addr, + .dst_ip = spec->hdr.dst_addr, + .proto = spec->hdr.next_proto_id, + .tos = spec->hdr.type_of_service, + }; + ipv4.mask = (struct ibv_flow_ipv4_ext_filter){ + .src_ip = mask->hdr.src_addr, + .dst_ip = mask->hdr.dst_addr, + .proto = mask->hdr.next_proto_id, + .tos = mask->hdr.type_of_service, + }; + /* Remove unwanted bits from values. */ + ipv4.val.src_ip &= ipv4.mask.src_ip; + ipv4.val.dst_ip &= ipv4.mask.dst_ip; + ipv4.val.proto &= ipv4.mask.proto; + ipv4.val.tos &= ipv4.mask.tos; + } + flow->l3_protocol_en = !!ipv4.mask.proto; + flow->l3_protocol = ipv4.val.proto; + if (size <= flow_size) { + mlx5_flow_verbs_hashfields_adjust + (flow, tunnel, + (ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | + ETH_RSS_NONFRAG_IPV4_OTHER), + (IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4)); + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L3; + mlx5_flow_spec_verbs_add(flow, &ipv4, size); + } + return size; +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_ipv6(const struct rte_flow_item *item, struct rte_flow *flow, + const size_t flow_size, struct rte_flow_error *error) +{ + const struct rte_flow_item_ipv6 *spec = item->spec; + 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 = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL); + unsigned int size = sizeof(struct ibv_flow_spec_ipv6); + struct ibv_flow_spec_ipv6 ipv6 = { + .type = IBV_FLOW_SPEC_IPV6 | (tunnel ? IBV_FLOW_SPEC_INNER : 0), + .size = size, + }; + int ret; + + if (flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 : + MLX5_FLOW_LAYER_OUTER_L3)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "multiple L3 layers not supported"); + else if (flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 : + MLX5_FLOW_LAYER_OUTER_L4)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "L3 cannot follow an L4 layer."); + /* + * IPv6 is not recognised by the NIC inside a GRE tunnel. + * Such support has to be disabled as the rule will be + * accepted. Issue reproduced with Mellanox OFED 4.3-3.0.2.1 and + * Mellanox OFED 4.4-1.0.0.0. + */ + if (tunnel && flow->layers & MLX5_FLOW_LAYER_GRE) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "IPv6 inside a GRE tunnel is" + " not recognised."); + if (!mask) + mask = &rte_flow_item_ipv6_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&nic_mask, + sizeof(struct rte_flow_item_ipv6), error); + if (ret < 0) + return ret; + flow->layers |= tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 : + MLX5_FLOW_LAYER_OUTER_L3_IPV6; + if (spec) { + unsigned int i; + uint32_t vtc_flow_val; + uint32_t vtc_flow_mask; + + memcpy(&ipv6.val.src_ip, spec->hdr.src_addr, + RTE_DIM(ipv6.val.src_ip)); + memcpy(&ipv6.val.dst_ip, spec->hdr.dst_addr, + RTE_DIM(ipv6.val.dst_ip)); + memcpy(&ipv6.mask.src_ip, mask->hdr.src_addr, + RTE_DIM(ipv6.mask.src_ip)); + memcpy(&ipv6.mask.dst_ip, mask->hdr.dst_addr, + RTE_DIM(ipv6.mask.dst_ip)); + vtc_flow_val = rte_be_to_cpu_32(spec->hdr.vtc_flow); + vtc_flow_mask = rte_be_to_cpu_32(mask->hdr.vtc_flow); + ipv6.val.flow_label = + rte_cpu_to_be_32((vtc_flow_val & IPV6_HDR_FL_MASK) >> + IPV6_HDR_FL_SHIFT); + ipv6.val.traffic_class = (vtc_flow_val & IPV6_HDR_TC_MASK) >> + IPV6_HDR_TC_SHIFT; + ipv6.val.next_hdr = spec->hdr.proto; + ipv6.val.hop_limit = spec->hdr.hop_limits; + ipv6.mask.flow_label = + rte_cpu_to_be_32((vtc_flow_mask & IPV6_HDR_FL_MASK) >> + IPV6_HDR_FL_SHIFT); + ipv6.mask.traffic_class = (vtc_flow_mask & IPV6_HDR_TC_MASK) >> + IPV6_HDR_TC_SHIFT; + ipv6.mask.next_hdr = mask->hdr.proto; + ipv6.mask.hop_limit = mask->hdr.hop_limits; + /* Remove unwanted bits from values. */ + for (i = 0; i < RTE_DIM(ipv6.val.src_ip); ++i) { + ipv6.val.src_ip[i] &= ipv6.mask.src_ip[i]; + ipv6.val.dst_ip[i] &= ipv6.mask.dst_ip[i]; + } + ipv6.val.flow_label &= ipv6.mask.flow_label; + ipv6.val.traffic_class &= ipv6.mask.traffic_class; + ipv6.val.next_hdr &= ipv6.mask.next_hdr; + ipv6.val.hop_limit &= ipv6.mask.hop_limit; + } + flow->l3_protocol_en = !!ipv6.mask.next_hdr; + flow->l3_protocol = ipv6.val.next_hdr; + if (size <= flow_size) { + mlx5_flow_verbs_hashfields_adjust + (flow, tunnel, + (ETH_RSS_IPV6 | ETH_RSS_NONFRAG_IPV6_OTHER), + (IBV_RX_HASH_SRC_IPV6 | IBV_RX_HASH_DST_IPV6)); + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L3; + mlx5_flow_spec_verbs_add(flow, &ipv6, size); + } + return size; +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_udp(const struct rte_flow_item *item, struct rte_flow *flow, + const size_t flow_size, struct rte_flow_error *error) +{ + const struct rte_flow_item_udp *spec = item->spec; + const struct rte_flow_item_udp *mask = item->mask; + const int tunnel = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL); + unsigned int size = sizeof(struct ibv_flow_spec_tcp_udp); + struct ibv_flow_spec_tcp_udp udp = { + .type = IBV_FLOW_SPEC_UDP | (tunnel ? IBV_FLOW_SPEC_INNER : 0), + .size = size, + }; + int ret; + + if (flow->l3_protocol_en && flow->l3_protocol != MLX5_IP_PROTOCOL_UDP) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "protocol filtering not compatible" + " with UDP layer"); + if (!(flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 : + MLX5_FLOW_LAYER_OUTER_L3))) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "L3 is mandatory to filter" + " on L4"); + if (flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 : + MLX5_FLOW_LAYER_OUTER_L4)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "L4 layer is already" + " present"); + 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; + flow->layers |= tunnel ? MLX5_FLOW_LAYER_INNER_L4_UDP : + MLX5_FLOW_LAYER_OUTER_L4_UDP; + if (spec) { + udp.val.dst_port = spec->hdr.dst_port; + udp.val.src_port = spec->hdr.src_port; + udp.mask.dst_port = mask->hdr.dst_port; + udp.mask.src_port = mask->hdr.src_port; + /* Remove unwanted bits from values. */ + udp.val.src_port &= udp.mask.src_port; + udp.val.dst_port &= udp.mask.dst_port; + } + if (size <= flow_size) { + mlx5_flow_verbs_hashfields_adjust(flow, tunnel, ETH_RSS_UDP, + (IBV_RX_HASH_SRC_PORT_UDP | + IBV_RX_HASH_DST_PORT_UDP)); + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L4; + mlx5_flow_spec_verbs_add(flow, &udp, size); + } + return size; +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_tcp(const struct rte_flow_item *item, struct rte_flow *flow, + const size_t flow_size, struct rte_flow_error *error) +{ + const struct rte_flow_item_tcp *spec = item->spec; + const struct rte_flow_item_tcp *mask = item->mask; + const int tunnel = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL); + unsigned int size = sizeof(struct ibv_flow_spec_tcp_udp); + struct ibv_flow_spec_tcp_udp tcp = { + .type = IBV_FLOW_SPEC_TCP | (tunnel ? IBV_FLOW_SPEC_INNER : 0), + .size = size, + }; + int ret; + + if (flow->l3_protocol_en && flow->l3_protocol != MLX5_IP_PROTOCOL_TCP) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "protocol filtering not compatible" + " with TCP layer"); + if (!(flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 : + MLX5_FLOW_LAYER_OUTER_L3))) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "L3 is mandatory to filter on L4"); + if (flow->layers & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 : + MLX5_FLOW_LAYER_OUTER_L4)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "L4 layer is already present"); + if (!mask) + mask = &rte_flow_item_tcp_mask; + ret = mlx5_flow_item_acceptable + (item, (const uint8_t *)mask, + (const uint8_t *)&rte_flow_item_tcp_mask, + sizeof(struct rte_flow_item_tcp), error); + if (ret < 0) + return ret; + flow->layers |= tunnel ? MLX5_FLOW_LAYER_INNER_L4_TCP : + MLX5_FLOW_LAYER_OUTER_L4_TCP; + if (spec) { + tcp.val.dst_port = spec->hdr.dst_port; + tcp.val.src_port = spec->hdr.src_port; + tcp.mask.dst_port = mask->hdr.dst_port; + tcp.mask.src_port = mask->hdr.src_port; + /* Remove unwanted bits from values. */ + tcp.val.src_port &= tcp.mask.src_port; + tcp.val.dst_port &= tcp.mask.dst_port; + } + if (size <= flow_size) { + mlx5_flow_verbs_hashfields_adjust(flow, tunnel, ETH_RSS_TCP, + (IBV_RX_HASH_SRC_PORT_TCP | + IBV_RX_HASH_DST_PORT_TCP)); + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L4; + mlx5_flow_spec_verbs_add(flow, &tcp, size); + } + return size; +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_vxlan(const struct rte_flow_item *item, struct rte_flow *flow, + const size_t flow_size, struct rte_flow_error *error) +{ + const struct rte_flow_item_vxlan *spec = item->spec; + const struct rte_flow_item_vxlan *mask = item->mask; + unsigned int size = sizeof(struct ibv_flow_spec_tunnel); + struct ibv_flow_spec_tunnel vxlan = { + .type = IBV_FLOW_SPEC_VXLAN_TUNNEL, + .size = size, + }; + int ret; + union vni { + uint32_t vlan_id; + uint8_t vni[4]; + } id = { .vlan_id = 0, }; + + if (flow->layers & MLX5_FLOW_LAYER_TUNNEL) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "a tunnel is already present"); + /* + * Verify only UDPv4 is present as defined in + * https://tools.ietf.org/html/rfc7348 + */ + if (!(flow->layers & MLX5_FLOW_LAYER_OUTER_L4_UDP)) + return rte_flow_error_set(error, ENOTSUP, + 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); + vxlan.val.tunnel_id = id.vlan_id; + memcpy(&id.vni[1], mask->vni, 3); + vxlan.mask.tunnel_id = id.vlan_id; + /* Remove unwanted bits from values. */ + vxlan.val.tunnel_id &= vxlan.mask.tunnel_id; + } + /* + * 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 (!vxlan.val.tunnel_id) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "VXLAN vni cannot be 0"); + if (!(flow->layers & MLX5_FLOW_LAYER_OUTER)) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "VXLAN tunnel must be fully defined"); + if (size <= flow_size) { + mlx5_flow_spec_verbs_add(flow, &vxlan, size); + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L2; + } + flow->layers |= MLX5_FLOW_LAYER_VXLAN; + return size; +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param dev + * Pointer to Ethernet device. + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_vxlan_gpe(struct rte_eth_dev *dev, + const struct rte_flow_item *item, + struct rte_flow *flow, const size_t flow_size, + struct rte_flow_error *error) +{ + const struct rte_flow_item_vxlan_gpe *spec = item->spec; + const struct rte_flow_item_vxlan_gpe *mask = item->mask; + unsigned int size = sizeof(struct ibv_flow_spec_tunnel); + struct ibv_flow_spec_tunnel vxlan_gpe = { + .type = IBV_FLOW_SPEC_VXLAN_TUNNEL, + .size = size, + }; + int ret; + union vni { + uint32_t vlan_id; + uint8_t vni[4]; + } id = { .vlan_id = 0, }; + + if (!((struct priv *)dev->data->dev_private)->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 (flow->layers & MLX5_FLOW_LAYER_TUNNEL) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "a tunnel is already present"); + /* + * Verify only UDPv4 is present as defined in + * https://tools.ietf.org/html/rfc7348 + */ + if (!(flow->layers & MLX5_FLOW_LAYER_OUTER_L4_UDP)) + return rte_flow_error_set(error, ENOTSUP, + 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) { + memcpy(&id.vni[1], spec->vni, 3); + vxlan_gpe.val.tunnel_id = id.vlan_id; + memcpy(&id.vni[1], mask->vni, 3); + vxlan_gpe.mask.tunnel_id = id.vlan_id; + if (spec->protocol) + return rte_flow_error_set + (error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "VxLAN-GPE protocol not supported"); + /* Remove unwanted bits from values. */ + vxlan_gpe.val.tunnel_id &= vxlan_gpe.mask.tunnel_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 (!vxlan_gpe.val.tunnel_id) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "VXLAN-GPE vni cannot be 0"); + if (!(flow->layers & MLX5_FLOW_LAYER_OUTER)) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "VXLAN-GPE tunnel must be fully" + " defined"); + if (size <= flow_size) { + mlx5_flow_spec_verbs_add(flow, &vxlan_gpe, size); + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L2; + } + flow->layers |= MLX5_FLOW_LAYER_VXLAN_GPE; + return size; +} + +/** + * Update the protocol in Verbs IPv4/IPv6 spec. + * + * @param[in, out] attr + * Pointer to Verbs attributes structure. + * @param[in] search + * Specification type to search in order to update the IP protocol. + * @param[in] protocol + * Protocol value to set if none is present in the specification. + */ +static void +mlx5_flow_item_gre_ip_protocol_update(struct ibv_flow_attr *attr, + enum ibv_flow_spec_type search, + uint8_t protocol) +{ + unsigned int i; + struct ibv_spec_header *hdr = (struct ibv_spec_header *) + ((uint8_t *)attr + sizeof(struct ibv_flow_attr)); + + if (!attr) + return; + for (i = 0; i != attr->num_of_specs; ++i) { + if (hdr->type == search) { + union { + struct ibv_flow_spec_ipv4_ext *ipv4; + struct ibv_flow_spec_ipv6 *ipv6; + } ip; + + switch (search) { + case IBV_FLOW_SPEC_IPV4_EXT: + ip.ipv4 = (struct ibv_flow_spec_ipv4_ext *)hdr; + if (!ip.ipv4->val.proto) { + ip.ipv4->val.proto = protocol; + ip.ipv4->mask.proto = 0xff; + } + break; + case IBV_FLOW_SPEC_IPV6: + ip.ipv6 = (struct ibv_flow_spec_ipv6 *)hdr; + if (!ip.ipv6->val.next_hdr) { + ip.ipv6->val.next_hdr = protocol; + ip.ipv6->mask.next_hdr = 0xff; + } + break; + default: + break; + } + break; + } + hdr = (struct ibv_spec_header *)((uint8_t *)hdr + hdr->size); + } +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * It will also update the previous L3 layer with the protocol value matching + * the GRE. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param dev + * Pointer to Ethernet device. + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_gre(const struct rte_flow_item *item, + struct rte_flow *flow, const size_t flow_size, + struct rte_flow_error *error) +{ + struct mlx5_flow_verbs *verbs = flow->cur_verbs; + const struct rte_flow_item_gre *spec = item->spec; + const struct rte_flow_item_gre *mask = item->mask; +#ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT + unsigned int size = sizeof(struct ibv_flow_spec_gre); + struct ibv_flow_spec_gre tunnel = { + .type = IBV_FLOW_SPEC_GRE, + .size = size, + }; +#else + unsigned int size = sizeof(struct ibv_flow_spec_tunnel); + struct ibv_flow_spec_tunnel tunnel = { + .type = IBV_FLOW_SPEC_VXLAN_TUNNEL, + .size = size, + }; +#endif + int ret; + + if (flow->l3_protocol_en && flow->l3_protocol != MLX5_IP_PROTOCOL_GRE) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "protocol filtering not compatible" + " with this GRE layer"); + if (flow->layers & MLX5_FLOW_LAYER_TUNNEL) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "a tunnel is already present"); + if (!(flow->layers & 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; +#ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT + if (spec) { + tunnel.val.c_ks_res0_ver = spec->c_rsvd0_ver; + tunnel.val.protocol = spec->protocol; + tunnel.mask.c_ks_res0_ver = mask->c_rsvd0_ver; + tunnel.mask.protocol = mask->protocol; + /* Remove unwanted bits from values. */ + tunnel.val.c_ks_res0_ver &= tunnel.mask.c_ks_res0_ver; + tunnel.val.protocol &= tunnel.mask.protocol; + tunnel.val.key &= tunnel.mask.key; + } +#else + 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 /* !HAVE_IBV_DEVICE_MPLS_SUPPORT */ + if (size <= flow_size) { + if (flow->layers & MLX5_FLOW_LAYER_OUTER_L3_IPV4) + mlx5_flow_item_gre_ip_protocol_update + (verbs->attr, IBV_FLOW_SPEC_IPV4_EXT, + MLX5_IP_PROTOCOL_GRE); + else + mlx5_flow_item_gre_ip_protocol_update + (verbs->attr, IBV_FLOW_SPEC_IPV6, + MLX5_IP_PROTOCOL_GRE); + mlx5_flow_spec_verbs_add(flow, &tunnel, size); + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L2; + } + flow->layers |= MLX5_FLOW_LAYER_GRE; + return size; +} + +/** + * Convert the @p item into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] item + * Item specification. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p item has fully been converted, + * otherwise another call with this returned memory size should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_item_mpls(const struct rte_flow_item *item __rte_unused, + struct rte_flow *flow __rte_unused, + const size_t flow_size __rte_unused, + struct rte_flow_error *error) +{ +#ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT + const struct rte_flow_item_mpls *spec = item->spec; + const struct rte_flow_item_mpls *mask = item->mask; + unsigned int size = sizeof(struct ibv_flow_spec_mpls); + struct ibv_flow_spec_mpls mpls = { + .type = IBV_FLOW_SPEC_MPLS, + .size = size, + }; + int ret; + + if (flow->l3_protocol_en && flow->l3_protocol != MLX5_IP_PROTOCOL_MPLS) + return rte_flow_error_set(error, ENOTSUP, + 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 (flow->layers & MLX5_FLOW_LAYER_TUNNEL && + (flow->layers & MLX5_FLOW_LAYER_GRE) != MLX5_FLOW_LAYER_GRE) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "a tunnel is already" + " present"); + 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; + if (spec) { + memcpy(&mpls.val.label, spec, sizeof(mpls.val.label)); + memcpy(&mpls.mask.label, mask, sizeof(mpls.mask.label)); + /* Remove unwanted bits from values. */ + mpls.val.label &= mpls.mask.label; + } + if (size <= flow_size) { + mlx5_flow_spec_verbs_add(flow, &mpls, size); + flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L2; + } + flow->layers |= MLX5_FLOW_LAYER_MPLS; + return size; +#endif /* !HAVE_IBV_DEVICE_MPLS_SUPPORT */ + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + item, + "MPLS is not supported by Verbs, please" + " update."); +} + +/** + * Convert the @p pattern into a Verbs specifications after ensuring the NIC + * will understand and process it correctly. + * The conversion is performed item per item, each of them is written into + * the @p flow if its size is lesser or equal to @p flow_size. + * Validation and memory consumption computation are still performed until the + * end of @p pattern, unless an error is encountered. + * + * @param[in] pattern + * Flow pattern. + * @param[in, out] flow + * Pointer to the rte_flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small some + * garbage may be present. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @pattern has fully been + * converted, otherwise another call with this returned memory size should + * be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_items(struct rte_eth_dev *dev, + const struct rte_flow_item pattern[], + struct rte_flow *flow, const size_t flow_size, + struct rte_flow_error *error) +{ + int remain = flow_size; + size_t size = 0; + + for (; pattern->type != RTE_FLOW_ITEM_TYPE_END; pattern++) { + int ret = 0; + + switch (pattern->type) { + case RTE_FLOW_ITEM_TYPE_VOID: + break; + case RTE_FLOW_ITEM_TYPE_ETH: + ret = mlx5_flow_item_eth(pattern, flow, remain, error); + break; + case RTE_FLOW_ITEM_TYPE_VLAN: + ret = mlx5_flow_item_vlan(pattern, flow, remain, error); + break; + case RTE_FLOW_ITEM_TYPE_IPV4: + ret = mlx5_flow_item_ipv4(pattern, flow, remain, error); + break; + case RTE_FLOW_ITEM_TYPE_IPV6: + ret = mlx5_flow_item_ipv6(pattern, flow, remain, error); + break; + case RTE_FLOW_ITEM_TYPE_UDP: + ret = mlx5_flow_item_udp(pattern, flow, remain, error); + break; + case RTE_FLOW_ITEM_TYPE_TCP: + ret = mlx5_flow_item_tcp(pattern, flow, remain, error); + break; + case RTE_FLOW_ITEM_TYPE_VXLAN: + ret = mlx5_flow_item_vxlan(pattern, flow, remain, + error); + break; + case RTE_FLOW_ITEM_TYPE_VXLAN_GPE: + ret = mlx5_flow_item_vxlan_gpe(dev, pattern, flow, + remain, error); + break; + case RTE_FLOW_ITEM_TYPE_GRE: + ret = mlx5_flow_item_gre(pattern, flow, remain, error); + break; + case RTE_FLOW_ITEM_TYPE_MPLS: + ret = mlx5_flow_item_mpls(pattern, flow, remain, error); + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + pattern, + "item not supported"); + } + if (ret < 0) + return ret; + if (remain > ret) + remain -= ret; + else + remain = 0; + size += ret; + } + if (!flow->layers) { + const struct rte_flow_item item = { + .type = RTE_FLOW_ITEM_TYPE_ETH, + }; + + return mlx5_flow_item_eth(&item, flow, flow_size, error); + } + return size; +} + +/** + * Convert the @p action into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] action + * Action configuration. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p action has fully been + * converted, otherwise another call with this returned memory size should + * be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_action_drop(const struct rte_flow_action *action, + struct rte_flow *flow, const size_t flow_size, + struct rte_flow_error *error) +{ + unsigned int size = sizeof(struct ibv_flow_spec_action_drop); + struct ibv_flow_spec_action_drop drop = { + .type = IBV_FLOW_SPEC_ACTION_DROP, + .size = size, + }; + + if (flow->fate) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "multiple fate actions are not" + " supported"); + if (flow->modifier & (MLX5_FLOW_MOD_FLAG | MLX5_FLOW_MOD_MARK)) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "drop is not compatible with" + " flag/mark action"); + if (size < flow_size) + mlx5_flow_spec_verbs_add(flow, &drop, size); + flow->fate |= MLX5_FLOW_FATE_DROP; + return size; +} + +/** + * Convert the @p action into @p flow after ensuring the NIC will understand + * and process it correctly. + * + * @param[in] dev + * Pointer to Ethernet device structure. + * @param[in] action + * Action configuration. + * @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 int +mlx5_flow_action_queue(struct rte_eth_dev *dev, + const struct rte_flow_action *action, + struct rte_flow *flow, + struct rte_flow_error *error) +{ + struct priv *priv = dev->data->dev_private; + const struct rte_flow_action_queue *queue = action->conf; + + if (flow->fate) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "multiple fate actions are not" + " supported"); + 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 (flow->queue) + (*flow->queue)[0] = queue->index; + flow->rss.queue_num = 1; + flow->fate |= MLX5_FLOW_FATE_QUEUE; + return 0; +} + +/** + * Ensure the @p action will be understood and used correctly by the NIC. + * + * @param dev + * Pointer to Ethernet device structure. + * @param action[in] + * Pointer to flow actions array. + * @param flow[in, out] + * Pointer to the rte_flow structure. + * @param error[in, out] + * Pointer to error structure. + * + * @return + * On success @p flow->queue array and @p flow->rss are filled and valid. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_action_rss(struct rte_eth_dev *dev, + const struct rte_flow_action *action, + struct rte_flow *flow, + struct rte_flow_error *error) +{ + struct priv *priv = dev->data->dev_private; + const struct rte_flow_action_rss *rss = action->conf; + unsigned int i; + + if (flow->fate) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "multiple fate actions are not" + " supported"); + 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"); + 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 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) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + rss, + "no queues were provided for RSS"); + 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"); + for (i = 0; i != rss->queue_num; ++i) { + if (rss->queue[i] >= priv->rxqs_n) + return rte_flow_error_set + (error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION_CONF, + rss, + "queue index out of range"); + 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 (flow->queue) + memcpy((*flow->queue), rss->queue, + rss->queue_num * sizeof(uint16_t)); + flow->rss.queue_num = rss->queue_num; + memcpy(flow->key, rss->key, MLX5_RSS_HASH_KEY_LEN); + flow->rss.types = rss->types; + flow->rss.level = rss->level; + flow->fate |= MLX5_FLOW_FATE_RSS; + return 0; +} + +/** + * Convert the @p action into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] action + * Action configuration. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p action has fully been + * converted, otherwise another call with this returned memory size should + * be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_action_flag(const struct rte_flow_action *action, + struct rte_flow *flow, const size_t flow_size, + struct rte_flow_error *error) +{ + unsigned int size = sizeof(struct ibv_flow_spec_action_tag); + struct ibv_flow_spec_action_tag tag = { + .type = IBV_FLOW_SPEC_ACTION_TAG, + .size = size, + .tag_id = mlx5_flow_mark_set(MLX5_FLOW_MARK_DEFAULT), + }; + struct mlx5_flow_verbs *verbs = flow->cur_verbs; + + if (flow->modifier & MLX5_FLOW_MOD_FLAG) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "flag action already present"); + if (flow->fate & MLX5_FLOW_FATE_DROP) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "flag is not compatible with drop" + " action"); + if (flow->modifier & MLX5_FLOW_MOD_MARK) + size = 0; + else if (size <= flow_size && verbs) + mlx5_flow_spec_verbs_add(flow, &tag, size); + flow->modifier |= MLX5_FLOW_MOD_FLAG; + return size; +} + +/** + * Update verbs specification to modify the flag to mark. + * + * @param[in, out] verbs + * Pointer to the mlx5_flow_verbs structure. + * @param[in] mark_id + * Mark identifier to replace the flag. + */ +static void +mlx5_flow_verbs_mark_update(struct mlx5_flow_verbs *verbs, uint32_t mark_id) +{ + struct ibv_spec_header *hdr; + int i; + + if (!verbs) + return; + /* Update Verbs specification. */ + hdr = (struct ibv_spec_header *)verbs->specs; + if (!hdr) + return; + for (i = 0; i != verbs->attr->num_of_specs; ++i) { + if (hdr->type == IBV_FLOW_SPEC_ACTION_TAG) { + struct ibv_flow_spec_action_tag *t = + (struct ibv_flow_spec_action_tag *)hdr; + + t->tag_id = mlx5_flow_mark_set(mark_id); + } + hdr = (struct ibv_spec_header *)((uintptr_t)hdr + hdr->size); + } +} + +/** + * Convert the @p action into @p flow (or by updating the already present + * Flag Verbs specification) after ensuring the NIC will understand and + * process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param[in] action + * Action configuration. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p action has fully been + * converted, otherwise another call with this returned memory size should + * be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_action_mark(const struct rte_flow_action *action, + struct rte_flow *flow, const size_t flow_size, + struct rte_flow_error *error) +{ + const struct rte_flow_action_mark *mark = action->conf; + unsigned int size = sizeof(struct ibv_flow_spec_action_tag); + struct ibv_flow_spec_action_tag tag = { + .type = IBV_FLOW_SPEC_ACTION_TAG, + .size = size, + }; + struct mlx5_flow_verbs *verbs = flow->cur_verbs; + + 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 (flow->modifier & MLX5_FLOW_MOD_MARK) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "mark action already present"); + if (flow->fate & MLX5_FLOW_FATE_DROP) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "mark is not compatible with drop" + " action"); + if (flow->modifier & MLX5_FLOW_MOD_FLAG) { + mlx5_flow_verbs_mark_update(verbs, mark->id); + size = 0; + } else if (size <= flow_size) { + tag.tag_id = mlx5_flow_mark_set(mark->id); + mlx5_flow_spec_verbs_add(flow, &tag, size); + } + flow->modifier |= MLX5_FLOW_MOD_MARK; + return size; +} + +/** + * Convert the @p action into a Verbs specification after ensuring the NIC + * will understand and process it correctly. + * If the necessary size for the conversion is greater than the @p flow_size, + * nothing is written in @p flow, the validation is still performed. + * + * @param action[in] + * Action configuration. + * @param flow[in, out] + * Pointer to flow structure. + * @param flow_size[in] + * Size in bytes of the available space in @p flow, if too small, nothing is + * written. + * @param error[int, out] + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p action has fully been + * converted, otherwise another call with this returned memory size should + * be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_action_count(struct rte_eth_dev *dev, + const struct rte_flow_action *action, + struct rte_flow *flow, + const size_t flow_size __rte_unused, + struct rte_flow_error *error) +{ + const struct rte_flow_action_count *count = action->conf; +#ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT + unsigned int size = sizeof(struct ibv_flow_spec_counter_action); + struct ibv_flow_spec_counter_action counter = { + .type = IBV_FLOW_SPEC_ACTION_COUNT, + .size = size, + }; +#endif + + if (!flow->counter) { + flow->counter = mlx5_flow_counter_new(dev, count->shared, + count->id); + if (!flow->counter) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "cannot get counter" + " context."); + } + if (!((struct priv *)dev->data->dev_private)->config.flow_counter_en) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "flow counters are not supported."); + flow->modifier |= MLX5_FLOW_MOD_COUNT; +#ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT + counter.counter_set_handle = flow->counter->cs->handle; + if (size <= flow_size) + mlx5_flow_spec_verbs_add(flow, &counter, size); + return size; +#endif + return 0; +} + +/** + * Convert the @p action into @p flow after ensuring the NIC will understand + * and process it correctly. + * The conversion is performed action per action, each of them is written into + * the @p flow if its size is lesser or equal to @p flow_size. + * Validation and memory consumption computation are still performed until the + * end of @p action, unless an error is encountered. + * + * @param[in] dev + * Pointer to Ethernet device structure. + * @param[in] actions + * Pointer to flow actions array. + * @param[in, out] flow + * Pointer to the rte_flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small some + * garbage may be present. + * @param[out] error + * Pointer to error structure. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the @p actions has fully been + * converted, otherwise another call with this returned memory size should + * be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_actions(struct rte_eth_dev *dev, + const struct rte_flow_action actions[], + struct rte_flow *flow, const size_t flow_size, + struct rte_flow_error *error) +{ + size_t size = 0; + int remain = flow_size; + int ret = 0; + + for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) { + switch (actions->type) { + case RTE_FLOW_ACTION_TYPE_VOID: + break; + case RTE_FLOW_ACTION_TYPE_FLAG: + ret = mlx5_flow_action_flag(actions, flow, remain, + error); + break; + case RTE_FLOW_ACTION_TYPE_MARK: + ret = mlx5_flow_action_mark(actions, flow, remain, + error); + break; + case RTE_FLOW_ACTION_TYPE_DROP: + ret = mlx5_flow_action_drop(actions, flow, remain, + error); + break; + case RTE_FLOW_ACTION_TYPE_QUEUE: + ret = mlx5_flow_action_queue(dev, actions, flow, error); + break; + case RTE_FLOW_ACTION_TYPE_RSS: + ret = mlx5_flow_action_rss(dev, actions, flow, error); + break; + case RTE_FLOW_ACTION_TYPE_COUNT: + ret = mlx5_flow_action_count(dev, actions, flow, remain, + error); + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + actions, + "action not supported"); + } + if (ret < 0) + return ret; + if (remain > ret) + remain -= ret; + else + remain = 0; + size += ret; + } + if (!flow->fate) + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "no fate action found"); + return size; +} + +/** + * Validate flow rule and fill flow structure accordingly. + * + * @param dev + * Pointer to Ethernet device. + * @param[out] flow + * Pointer to flow structure. + * @param flow_size + * Size of allocated space for @p flow. + * @param[in] attr + * Flow rule attributes. + * @param[in] pattern + * Pattern specification (list terminated by the END pattern item). + * @param[in] actions + * Associated actions (list terminated by the END action). + * @param[out] error + * Perform verbose error reporting if not NULL. + * + * @return + * A positive value representing the size of the flow object in bytes + * regardless of @p flow_size on success, a negative errno value otherwise + * and rte_errno is set. + */ +static int +mlx5_flow_merge_switch(struct rte_eth_dev *dev, + struct rte_flow *flow, + size_t flow_size, + const struct rte_flow_attr *attr, + const struct rte_flow_item pattern[], + const struct rte_flow_action actions[], + struct rte_flow_error *error) +{ + unsigned int n = mlx5_dev_to_port_id(dev->device, NULL, 0); + uint16_t port_id[!n + n]; + struct mlx5_nl_flow_ptoi ptoi[!n + n + 1]; + size_t off = RTE_ALIGN_CEIL(sizeof(*flow), alignof(max_align_t)); + unsigned int i; + unsigned int own = 0; + int ret; + + /* At least one port is needed when no switch domain is present. */ + if (!n) { + n = 1; + port_id[0] = dev->data->port_id; + } else { + n = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, n), n); + } + for (i = 0; i != n; ++i) { + struct rte_eth_dev_info dev_info; + + rte_eth_dev_info_get(port_id[i], &dev_info); + if (port_id[i] == dev->data->port_id) + own = i; + ptoi[i].port_id = port_id[i]; + ptoi[i].ifindex = dev_info.if_index; + } + /* Ensure first entry of ptoi[] is the current device. */ + if (own) { + ptoi[n] = ptoi[0]; + ptoi[0] = ptoi[own]; + ptoi[own] = ptoi[n]; + } + /* An entry with zero ifindex terminates ptoi[]. */ + ptoi[n].port_id = 0; + ptoi[n].ifindex = 0; + if (flow_size < off) + flow_size = 0; + ret = mlx5_nl_flow_transpose((uint8_t *)flow + off, + flow_size ? flow_size - off : 0, + ptoi, attr, pattern, actions, error); + if (ret < 0) + return ret; + if (flow_size) { + *flow = (struct rte_flow){ + .attributes = *attr, + .nl_flow = (uint8_t *)flow + off, + }; + /* + * Generate a reasonably unique handle based on the address + * of the target buffer. + * + * This is straightforward on 32-bit systems where the flow + * pointer can be used directly. Otherwise, its least + * significant part is taken after shifting it by the + * previous power of two of the pointed buffer size. + */ + if (sizeof(flow) <= 4) + mlx5_nl_flow_brand(flow->nl_flow, (uintptr_t)flow); + else + mlx5_nl_flow_brand + (flow->nl_flow, + (uintptr_t)flow >> + rte_log2_u32(rte_align32prevpow2(flow_size))); + } + return off + ret; +} + +static unsigned int +mlx5_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; +} + +/** + * Convert the @p attributes, @p pattern, @p action, into an flow for the NIC + * after ensuring the NIC will understand and process it correctly. + * The conversion is only performed item/action per item/action, each of + * them is written into the @p flow if its size is lesser or equal to @p + * flow_size. + * Validation and memory consumption computation are still performed until the + * end, unless an error is encountered. + * + * @param[in] dev + * Pointer to Ethernet device. + * @param[in, out] flow + * Pointer to flow structure. + * @param[in] flow_size + * Size in bytes of the available space in @p flow, if too small some + * garbage may be present. + * @param[in] attributes + * Flow rule attributes. + * @param[in] pattern + * Pattern specification (list terminated by the END pattern item). + * @param[in] actions + * Associated actions (list terminated by the END action). + * @param[out] error + * Perform verbose error reporting if not NULL. + * + * @return + * On success the number of bytes consumed/necessary, if the returned value + * is lesser or equal to @p flow_size, the flow has fully been converted and + * can be applied, otherwise another call with this returned memory size + * should be done. + * On error, a negative errno value is returned and rte_errno is set. + */ +static int +mlx5_flow_merge(struct rte_eth_dev *dev, struct rte_flow *flow, + const size_t flow_size, + const struct rte_flow_attr *attributes, + const struct rte_flow_item pattern[], + const struct rte_flow_action actions[], + struct rte_flow_error *error) +{ + struct rte_flow local_flow = { .layers = 0, }; + size_t size = sizeof(*flow); + union { + struct rte_flow_expand_rss buf; + uint8_t buffer[2048]; + } expand_buffer; + struct rte_flow_expand_rss *buf = &expand_buffer.buf; + struct mlx5_flow_verbs *original_verbs = NULL; + size_t original_verbs_size = 0; + uint32_t original_layers = 0; + int expanded_pattern_idx = 0; + int ret; + uint32_t i; + + if (attributes->transfer) + return mlx5_flow_merge_switch(dev, flow, flow_size, + attributes, pattern, + actions, error); + if (size > flow_size) + flow = &local_flow; + ret = mlx5_flow_attributes(dev, attributes, flow, error); + if (ret < 0) + return ret; + ret = mlx5_flow_actions(dev, actions, &local_flow, 0, error); + if (ret < 0) + return ret; + if (local_flow.rss.types) { + unsigned int graph_root; + + graph_root = mlx5_find_graph_root(pattern, + local_flow.rss.level); + ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer), + pattern, local_flow.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)pattern; + } + size += RTE_ALIGN_CEIL(local_flow.rss.queue_num * sizeof(uint16_t), + sizeof(void *)); + if (size <= flow_size) + flow->queue = (void *)(flow + 1); + LIST_INIT(&flow->verbs); + flow->layers = 0; + flow->modifier = 0; + flow->fate = 0; + for (i = 0; i != buf->entries; ++i) { + size_t off = size; + size_t off2; + + flow->layers = original_layers; + size += sizeof(struct ibv_flow_attr) + + sizeof(struct mlx5_flow_verbs); + off2 = size; + if (size < flow_size) { + flow->cur_verbs = (void *)((uintptr_t)flow + off); + flow->cur_verbs->attr = (void *)(flow->cur_verbs + 1); + flow->cur_verbs->specs = + (void *)(flow->cur_verbs->attr + 1); + } + /* First iteration convert the pattern into Verbs. */ + if (i == 0) { + /* Actions don't need to be converted several time. */ + ret = mlx5_flow_actions(dev, actions, flow, + (size < flow_size) ? + flow_size - size : 0, + error); + if (ret < 0) + return ret; + size += ret; + } else { + /* + * Next iteration means the pattern has already been + * converted and an expansion is necessary to match + * the user RSS request. For that only the expanded + * items will be converted, the common part with the + * user pattern are just copied into the next buffer + * zone. + */ + size += original_verbs_size; + if (size < flow_size) { + rte_memcpy(flow->cur_verbs->attr, + original_verbs->attr, + original_verbs_size + + sizeof(struct ibv_flow_attr)); + flow->cur_verbs->size = original_verbs_size; + } + } + ret = mlx5_flow_items + (dev, + (const struct rte_flow_item *) + &buf->entry[i].pattern[expanded_pattern_idx], + flow, + (size < flow_size) ? flow_size - size : 0, error); + if (ret < 0) + return ret; + size += ret; + if (size <= flow_size) { + mlx5_flow_adjust_priority(dev, flow); + LIST_INSERT_HEAD(&flow->verbs, flow->cur_verbs, next); + } + /* + * Keep a pointer of the first verbs conversion and the layers + * it has encountered. + */ + if (i == 0) { + original_verbs = flow->cur_verbs; + original_verbs_size = size - off2; + original_layers = flow->layers; + /* + * move the index of the expanded pattern to the + * first item not addressed yet. + */ + if (pattern->type == RTE_FLOW_ITEM_TYPE_END) { + expanded_pattern_idx++; + } else { + const struct rte_flow_item *item = pattern; + + for (item = pattern; + item->type != RTE_FLOW_ITEM_TYPE_END; + ++item) + expanded_pattern_idx++; + } + } + } + /* Restore the origin layers in the flow. */ + flow->layers = original_layers; + return size; +} + +/** + * 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 +mlx5_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 flow. + * + * @param[in] dev + * Pointer to Ethernet device. + * @param[in] flow + * Pointer to flow structure. + */ +static void +mlx5_flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + struct priv *priv = dev->data->dev_private; + const int mark = !!(flow->modifier & + (MLX5_FLOW_MOD_FLAG | MLX5_FLOW_MOD_MARK)); + const int tunnel = !!(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 & flow->layers) == + tunnels_info[j].tunnel) { + rxq_ctrl->flow_tunnels_n[j]++; + break; + } + } + mlx5_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 +mlx5_flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + struct priv *priv = dev->data->dev_private; + const int mark = !!(flow->modifier & + (MLX5_FLOW_MOD_FLAG | MLX5_FLOW_MOD_MARK)); + const int tunnel = !!(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 & flow->layers) == + tunnels_info[j].tunnel) { + rxq_ctrl->flow_tunnels_n[j]--; + break; + } + } + mlx5_flow_rxq_tunnel_ptype_update(rxq_ctrl); + } + } +} + +/** + * Clear the Mark/Flag and Tunnel ptype information in all Rx queues. + * + * @param dev + * Pointer to Ethernet device. + */ +static void +mlx5_flow_rxq_flags_clear(struct rte_eth_dev *dev) +{ + struct 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 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 = mlx5_flow_merge(dev, NULL, 0, attr, items, actions, error); + + if (ret < 0) + return ret; + return 0; +} + +/** + * Remove the flow. + * + * @param[in] dev + * Pointer to Ethernet device. + * @param[in, out] flow + * Pointer to flow structure. + */ +static void +mlx5_flow_remove(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + struct priv *priv = dev->data->dev_private; + struct mlx5_flow_verbs *verbs; + + if (flow->nl_flow && priv->mnl_socket) + mlx5_nl_flow_destroy(priv->mnl_socket, flow->nl_flow, NULL); + LIST_FOREACH(verbs, &flow->verbs, next) { + if (verbs->flow) { + claim_zero(mlx5_glue->destroy_flow(verbs->flow)); + verbs->flow = NULL; + } + if (verbs->hrxq) { + if (flow->fate & MLX5_FLOW_FATE_DROP) + mlx5_hrxq_drop_release(dev); + else + mlx5_hrxq_release(dev, verbs->hrxq); + verbs->hrxq = NULL; + } + } + if (flow->counter) { + mlx5_flow_counter_release(flow->counter); + flow->counter = NULL; + } +} + +/** + * Apply the flow. + * + * @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 int +mlx5_flow_apply(struct rte_eth_dev *dev, struct rte_flow *flow, + struct rte_flow_error *error) +{ + struct priv *priv = dev->data->dev_private; + struct mlx5_flow_verbs *verbs; + int err; + + LIST_FOREACH(verbs, &flow->verbs, next) { + if (flow->fate & MLX5_FLOW_FATE_DROP) { + verbs->hrxq = mlx5_hrxq_drop_new(dev); + if (!verbs->hrxq) { + rte_flow_error_set + (error, errno, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "cannot get drop hash queue"); + goto error; + } + } else { + struct mlx5_hrxq *hrxq; + + hrxq = mlx5_hrxq_get(dev, flow->key, + MLX5_RSS_HASH_KEY_LEN, + verbs->hash_fields, + (*flow->queue), + flow->rss.queue_num); + if (!hrxq) + hrxq = mlx5_hrxq_new(dev, flow->key, + MLX5_RSS_HASH_KEY_LEN, + verbs->hash_fields, + (*flow->queue), + flow->rss.queue_num, + !!(flow->layers & + MLX5_FLOW_LAYER_TUNNEL)); + if (!hrxq) { + rte_flow_error_set + (error, rte_errno, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "cannot get hash queue"); + goto error; + } + verbs->hrxq = hrxq; + } + verbs->flow = + mlx5_glue->create_flow(verbs->hrxq->qp, verbs->attr); + if (!verbs->flow) { + rte_flow_error_set(error, errno, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "hardware refuses to create flow"); + goto error; + } + } + if (flow->nl_flow && + priv->mnl_socket && + mlx5_nl_flow_create(priv->mnl_socket, flow->nl_flow, error)) + goto error; + return 0; +error: + err = rte_errno; /* Save rte_errno before cleanup. */ + LIST_FOREACH(verbs, &flow->verbs, next) { + if (verbs->hrxq) { + if (flow->fate & MLX5_FLOW_FATE_DROP) + mlx5_hrxq_drop_release(dev); + else + mlx5_hrxq_release(dev, verbs->hrxq); + verbs->hrxq = NULL; + } + } + rte_errno = err; /* Restore rte_errno. */ + return -rte_errno; +} + +/** + * 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 * +mlx5_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; + size_t size = 0; + int ret; + + ret = mlx5_flow_merge(dev, flow, size, attr, items, actions, error); + if (ret < 0) + return NULL; + size = ret; + flow = rte_calloc(__func__, 1, size, 0); + if (!flow) { + rte_flow_error_set(error, ENOMEM, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "not enough memory to create flow"); + return NULL; + } + ret = mlx5_flow_merge(dev, flow, size, attr, items, actions, error); + if (ret < 0) { + rte_free(flow); + return NULL; + } + assert((size_t)ret == size); + if (dev->data->dev_started) { + ret = mlx5_flow_apply(dev, flow, error); + if (ret < 0) { + ret = rte_errno; /* Save rte_errno before cleanup. */ + if (flow) { + mlx5_flow_remove(dev, flow); + rte_free(flow); + } + rte_errno = ret; /* Restore rte_errno. */ + return NULL; + } + } + TAILQ_INSERT_TAIL(list, flow, next); + mlx5_flow_rxq_flags_set(dev, flow); + return flow; +} + +/** + * 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) +{ + return mlx5_flow_list_create + (dev, &((struct priv *)dev->data->dev_private)->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 +mlx5_flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list, + struct rte_flow *flow) +{ + mlx5_flow_remove(dev, flow); + TAILQ_REMOVE(list, flow, next); + /* + * Update RX queue flags only if port is started, otherwise it is + * already clean. + */ + if (dev->data->dev_started) + mlx5_flow_rxq_flags_trim(dev, flow); + 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); + mlx5_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) + mlx5_flow_remove(dev, flow); + mlx5_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 = mlx5_flow_apply(dev, flow, &error); + if (ret < 0) + goto error; + mlx5_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 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 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) { + rte_errno = EINVAL; + return -rte_errno; + } + for (i = 0; i != priv->reta_idx_n; ++i) + queue[i] = (*priv->reta_idx)[i]; + flow = mlx5_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 priv *priv = dev->data->dev_private; + + mlx5_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 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 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 flow counter. + * + * @param flow + * Pointer to the flow. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +mlx5_flow_query_count(struct rte_flow *flow __rte_unused, + void *data __rte_unused, + struct rte_flow_error *error) +{ +#ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT + if (flow->modifier & MLX5_FLOW_MOD_COUNT) { + struct rte_flow_query_count *qc = data; + uint64_t counters[2] = {0, 0}; + struct ibv_query_counter_set_attr query_cs_attr = { + .cs = flow->counter->cs, + .query_flags = IBV_COUNTER_SET_FORCE_UPDATE, + }; + struct ibv_counter_set_data query_out = { + .out = counters, + .outlen = 2 * sizeof(uint64_t), + }; + int err = mlx5_glue->query_counter_set(&query_cs_attr, + &query_out); + + if (err) + return rte_flow_error_set + (error, err, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "cannot read counter"); + qc->hits_set = 1; + qc->bytes_set = 1; + qc->hits = counters[0] - flow->counter->hits; + qc->bytes = counters[1] - flow->counter->bytes; + if (qc->reset) { + flow->counter->hits = counters[0]; + flow->counter->bytes = counters[1]; + } + return 0; + } + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "flow does not have counter"); +#endif + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "counters are not available"); +} + +/** + * Query a flows. + * + * @see rte_flow_query() + * @see rte_flow_ops + */ +int +mlx5_flow_query(struct rte_eth_dev *dev __rte_unused, + struct rte_flow *flow, + const struct rte_flow_action *actions, + void *data, + struct rte_flow_error *error) +{ + int ret = 0; + + for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) { + switch (actions->type) { + case RTE_FLOW_ACTION_TYPE_VOID: + break; + case RTE_FLOW_ACTION_TYPE_COUNT: + ret = mlx5_flow_query_count(flow, data, error); + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + actions, + "action not supported"); + } + 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 +mlx5_fdir_filter_convert(struct rte_eth_dev *dev, + const struct rte_eth_fdir_filter *fdir_filter, + struct mlx5_fdir *attributes) +{ + struct 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, + .next_proto_id = input->flow.ip4_flow.proto, + }; + 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; +} + +/** + * 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 +mlx5_fdir_filter_add(struct rte_eth_dev *dev, + const struct rte_eth_fdir_filter *fdir_filter) +{ + struct priv *priv = dev->data->dev_private; + struct mlx5_fdir attributes = { + .attr.group = 0, + .l2_mask = { + .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00", + .src.addr_bytes = "\x00\x00\x00\x00\x00\x00", + .type = 0, + }, + }; + struct rte_flow_error error; + struct rte_flow *flow; + int ret; + + ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes); + if (ret) + return ret; + flow = mlx5_flow_list_create(dev, &priv->flows, &attributes.attr, + attributes.items, attributes.actions, + &error); + if (flow) { + DRV_LOG(DEBUG, "port %u FDIR created %p", dev->data->port_id, + (void *)flow); + return 0; + } + 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 +mlx5_fdir_filter_delete(struct rte_eth_dev *dev __rte_unused, + const struct rte_eth_fdir_filter *fdir_filter + __rte_unused) +{ + rte_errno = ENOTSUP; + return -rte_errno; +} + +/** + * 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 +mlx5_fdir_filter_update(struct rte_eth_dev *dev, + const struct rte_eth_fdir_filter *fdir_filter) +{ + int ret; + + ret = mlx5_fdir_filter_delete(dev, fdir_filter); + if (ret) + return ret; + return mlx5_fdir_filter_add(dev, fdir_filter); +} + +/** + * Flush all filters. + * + * @param dev + * Pointer to Ethernet device. + */ +static void +mlx5_fdir_filter_flush(struct rte_eth_dev *dev) +{ + struct 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 +mlx5_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 +mlx5_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 mlx5_fdir_filter_add(dev, arg); + case RTE_ETH_FILTER_UPDATE: + return mlx5_fdir_filter_update(dev, arg); + case RTE_ETH_FILTER_DELETE: + return mlx5_fdir_filter_delete(dev, arg); + case RTE_ETH_FILTER_FLUSH: + mlx5_fdir_filter_flush(dev); + break; + case RTE_ETH_FILTER_INFO: + mlx5_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 mlx5_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; +} |