diff options
Diffstat (limited to 'drivers/net/mlx5/mlx5_flow_verbs.c')
| -rw-r--r-- | drivers/net/mlx5/mlx5_flow_verbs.c | 1825 |
1 files changed, 1825 insertions, 0 deletions
diff --git a/drivers/net/mlx5/mlx5_flow_verbs.c b/drivers/net/mlx5/mlx5_flow_verbs.c new file mode 100644 index 00000000..81bc39f9 --- /dev/null +++ b/drivers/net/mlx5/mlx5_flow_verbs.c @@ -0,0 +1,1825 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2018 Mellanox Technologies, Ltd + */ + +#include <netinet/in.h> +#include <sys/queue.h> +#include <stdalign.h> +#include <stdint.h> +#include <string.h> + +/* Verbs header. */ +/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ +#ifdef PEDANTIC +#pragma GCC diagnostic ignored "-Wpedantic" +#endif +#include <infiniband/verbs.h> +#ifdef PEDANTIC +#pragma GCC diagnostic error "-Wpedantic" +#endif + +#include <rte_common.h> +#include <rte_ether.h> +#include <rte_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" +#include "mlx5_flow.h" + +/** + * Create Verbs flow counter with Verbs library. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in, out] counter + * mlx5 flow counter object, contains the counter id, + * handle of created Verbs flow counter is returned + * in cs field (if counters are supported). + * + * @return + * 0 On success else a negative errno value is returned + * and rte_errno is set. + */ +static int +flow_verbs_counter_create(struct rte_eth_dev *dev, + struct mlx5_flow_counter *counter) +{ +#if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) + struct priv *priv = dev->data->dev_private; + struct ibv_counter_set_init_attr init = { + .counter_set_id = counter->id}; + + counter->cs = mlx5_glue->create_counter_set(priv->ctx, &init); + if (!counter->cs) { + rte_errno = ENOTSUP; + return -ENOTSUP; + } + return 0; +#elif defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) + struct priv *priv = dev->data->dev_private; + struct ibv_counters_init_attr init = {0}; + struct ibv_counter_attach_attr attach = {0}; + int ret; + + counter->cs = mlx5_glue->create_counters(priv->ctx, &init); + if (!counter->cs) { + rte_errno = ENOTSUP; + return -ENOTSUP; + } + attach.counter_desc = IBV_COUNTER_PACKETS; + attach.index = 0; + ret = mlx5_glue->attach_counters(counter->cs, &attach, NULL); + if (!ret) { + attach.counter_desc = IBV_COUNTER_BYTES; + attach.index = 1; + ret = mlx5_glue->attach_counters + (counter->cs, &attach, NULL); + } + if (ret) { + claim_zero(mlx5_glue->destroy_counters(counter->cs)); + counter->cs = NULL; + rte_errno = ret; + return -ret; + } + return 0; +#else + (void)dev; + (void)counter; + rte_errno = ENOTSUP; + return -ENOTSUP; +#endif +} + +/** + * Get a flow counter. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @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 * +flow_verbs_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; + int ret; + + LIST_FOREACH(cnt, &priv->flow_counters, next) { + if (!cnt->shared || cnt->shared != shared) + continue; + if (cnt->id != id) + continue; + cnt->ref_cnt++; + return cnt; + } + cnt = rte_calloc(__func__, 1, sizeof(*cnt), 0); + if (!cnt) { + rte_errno = ENOMEM; + return NULL; + } + cnt->id = id; + cnt->shared = shared; + cnt->ref_cnt = 1; + cnt->hits = 0; + cnt->bytes = 0; + /* Create counter with Verbs. */ + ret = flow_verbs_counter_create(dev, cnt); + if (!ret) { + LIST_INSERT_HEAD(&priv->flow_counters, cnt, next); + return cnt; + } + /* Some error occurred in Verbs library. */ + rte_free(cnt); + rte_errno = -ret; + return NULL; +} + +/** + * Release a flow counter. + * + * @param[in] counter + * Pointer to the counter handler. + */ +static void +flow_verbs_counter_release(struct mlx5_flow_counter *counter) +{ + if (--counter->ref_cnt == 0) { +#if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) + claim_zero(mlx5_glue->destroy_counter_set(counter->cs)); +#elif defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) + claim_zero(mlx5_glue->destroy_counters(counter->cs)); +#endif + LIST_REMOVE(counter, next); + rte_free(counter); + } +} + +/** + * Query a flow counter via Verbs library call. + * + * @see rte_flow_query() + * @see rte_flow_ops + */ +static int +flow_verbs_counter_query(struct rte_eth_dev *dev __rte_unused, + struct rte_flow *flow, void *data, + struct rte_flow_error *error) +{ +#if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) || \ + defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) + if (flow->actions & MLX5_FLOW_ACTION_COUNT) { + struct rte_flow_query_count *qc = data; + uint64_t counters[2] = {0, 0}; +#if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) + 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); +#elif defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) + int err = mlx5_glue->query_counters + (flow->counter->cs, counters, + RTE_DIM(counters), + IBV_READ_COUNTERS_ATTR_PREFER_CACHED); +#endif + 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, EINVAL, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "flow does not have counter"); +#else + (void)flow; + (void)data; + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_UNSPECIFIED, + NULL, + "counters are not available"); +#endif +} + +/** + * 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 +flow_verbs_spec_add(struct mlx5_flow *flow, void *src, unsigned int size) +{ + struct mlx5_flow_verbs *verbs = &flow->verbs; + + if (verbs->specs) { + void *dst; + + dst = (void *)(verbs->specs + verbs->size); + memcpy(dst, src, size); + ++verbs->attr->num_of_specs; + } + verbs->size += size; +} + +/** + * Convert the @p item into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in] item_flags + * Bit field with all detected items. + * @param[in, out] dev_flow + * Pointer to dev_flow structure. + */ +static void +flow_verbs_translate_item_eth(const struct rte_flow_item *item, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + const struct rte_flow_item_eth *spec = item->spec; + const struct rte_flow_item_eth *mask = item->mask; + const int tunnel = !!(*item_flags & 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, + }; + + if (!mask) + mask = &rte_flow_item_eth_mask; + 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; + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L2; + } + flow_verbs_spec_add(dev_flow, ð, size); + *item_flags |= tunnel ? MLX5_FLOW_LAYER_INNER_L2 : + MLX5_FLOW_LAYER_OUTER_L2; +} + +/** + * Update the VLAN tag in the Verbs Ethernet specification. + * This function assumes that the input is valid and there is space to add + * the requested item. + * + * @param[in, out] attr + * Pointer to Verbs attributes structure. + * @param[in] eth + * Verbs structure containing the VLAN information to copy. + */ +static void +flow_verbs_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 a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that holds all detected items. + * @param[in, out] dev_flow + * Pointer to dev_flow structure. + */ +static void +flow_verbs_translate_item_vlan(const struct rte_flow_item *item, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + const struct rte_flow_item_vlan *spec = item->spec; + const struct rte_flow_item_vlan *mask = item->mask; + unsigned int size = sizeof(struct ibv_flow_spec_eth); + const int tunnel = !!(*item_flags & MLX5_FLOW_LAYER_TUNNEL); + struct ibv_flow_spec_eth eth = { + .type = IBV_FLOW_SPEC_ETH | (tunnel ? IBV_FLOW_SPEC_INNER : 0), + .size = size, + }; + const uint32_t l2m = tunnel ? MLX5_FLOW_LAYER_INNER_L2 : + MLX5_FLOW_LAYER_OUTER_L2; + + if (!mask) + mask = &rte_flow_item_vlan_mask; + 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; + } + if (!(*item_flags & l2m)) { + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L2; + flow_verbs_spec_add(dev_flow, ð, size); + } else { + flow_verbs_item_vlan_update(dev_flow->verbs.attr, ð); + size = 0; /* Only an update is done in eth specification. */ + } + *item_flags |= tunnel ? + (MLX5_FLOW_LAYER_INNER_L2 | MLX5_FLOW_LAYER_INNER_VLAN) : + (MLX5_FLOW_LAYER_OUTER_L2 | MLX5_FLOW_LAYER_OUTER_VLAN); +} + +/** + * Convert the @p item into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that marks all detected items. + * @param[in, out] dev_flow + * Pointer to sepacific flow structure. + */ +static void +flow_verbs_translate_item_ipv4(const struct rte_flow_item *item, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + const struct rte_flow_item_ipv4 *spec = item->spec; + const struct rte_flow_item_ipv4 *mask = item->mask; + const int tunnel = !!(*item_flags & 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, + }; + + if (!mask) + mask = &rte_flow_item_ipv4_mask; + *item_flags |= 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; + } + dev_flow->verbs.hash_fields |= + mlx5_flow_hashfields_adjust(dev_flow, tunnel, + MLX5_IPV4_LAYER_TYPES, + MLX5_IPV4_IBV_RX_HASH); + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L3; + flow_verbs_spec_add(dev_flow, &ipv4, size); +} + +/** + * Convert the @p item into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that marks all detected items. + * @param[in, out] dev_flow + * Pointer to sepacific flow structure. + */ +static void +flow_verbs_translate_item_ipv6(const struct rte_flow_item *item, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + const struct rte_flow_item_ipv6 *spec = item->spec; + const struct rte_flow_item_ipv6 *mask = item->mask; + const int tunnel = !!(dev_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, + }; + + if (!mask) + mask = &rte_flow_item_ipv6_mask; + *item_flags |= 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; + } + dev_flow->verbs.hash_fields |= + mlx5_flow_hashfields_adjust(dev_flow, tunnel, + MLX5_IPV6_LAYER_TYPES, + MLX5_IPV6_IBV_RX_HASH); + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L3; + flow_verbs_spec_add(dev_flow, &ipv6, size); +} + +/** + * Convert the @p item into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that marks all detected items. + * @param[in, out] dev_flow + * Pointer to sepacific flow structure. + */ +static void +flow_verbs_translate_item_udp(const struct rte_flow_item *item, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + const struct rte_flow_item_udp *spec = item->spec; + const struct rte_flow_item_udp *mask = item->mask; + const int tunnel = !!(*item_flags & 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, + }; + + if (!mask) + mask = &rte_flow_item_udp_mask; + *item_flags |= 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; + } + dev_flow->verbs.hash_fields |= + mlx5_flow_hashfields_adjust(dev_flow, tunnel, ETH_RSS_UDP, + (IBV_RX_HASH_SRC_PORT_UDP | + IBV_RX_HASH_DST_PORT_UDP)); + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L4; + flow_verbs_spec_add(dev_flow, &udp, size); +} + +/** + * Convert the @p item into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that marks all detected items. + * @param[in, out] dev_flow + * Pointer to sepacific flow structure. + */ +static void +flow_verbs_translate_item_tcp(const struct rte_flow_item *item, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + const struct rte_flow_item_tcp *spec = item->spec; + const struct rte_flow_item_tcp *mask = item->mask; + const int tunnel = !!(dev_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, + }; + + if (!mask) + mask = &rte_flow_item_tcp_mask; + *item_flags |= 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; + } + dev_flow->verbs.hash_fields |= + mlx5_flow_hashfields_adjust(dev_flow, tunnel, ETH_RSS_TCP, + (IBV_RX_HASH_SRC_PORT_TCP | + IBV_RX_HASH_DST_PORT_TCP)); + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L4; + flow_verbs_spec_add(dev_flow, &tcp, size); +} + +/** + * Convert the @p item into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that marks all detected items. + * @param[in, out] dev_flow + * Pointer to sepacific flow structure. + */ +static void +flow_verbs_translate_item_vxlan(const struct rte_flow_item *item, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + 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, + }; + union vni { + uint32_t vlan_id; + uint8_t vni[4]; + } id = { .vlan_id = 0, }; + + if (!mask) + mask = &rte_flow_item_vxlan_mask; + 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; + } + flow_verbs_spec_add(dev_flow, &vxlan, size); + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L2; + *item_flags |= MLX5_FLOW_LAYER_VXLAN; +} + +/** + * Convert the @p item into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that marks all detected items. + * @param[in, out] dev_flow + * Pointer to sepacific flow structure. + */ +static void +flow_verbs_translate_item_vxlan_gpe(const struct rte_flow_item *item, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + 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, + }; + union vni { + uint32_t vlan_id; + uint8_t vni[4]; + } id = { .vlan_id = 0, }; + + if (!mask) + mask = &rte_flow_item_vxlan_gpe_mask; + 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; + /* Remove unwanted bits from values. */ + vxlan_gpe.val.tunnel_id &= vxlan_gpe.mask.tunnel_id; + } + flow_verbs_spec_add(dev_flow, &vxlan_gpe, size); + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L2; + *item_flags |= MLX5_FLOW_LAYER_VXLAN_GPE; +} + +/** + * 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 +flow_verbs_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. This function assumes that + * the input is valid and that there is space to insert the requested item + * into the flow. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that marks all detected items. + * @param[in, out] dev_flow + * Pointer to sepacific flow structure. + */ +static void +flow_verbs_translate_item_gre(const struct rte_flow_item *item __rte_unused, + uint64_t *item_flags, + struct mlx5_flow *dev_flow) +{ + struct mlx5_flow_verbs *verbs = &dev_flow->verbs; +#ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT + unsigned int size = sizeof(struct ibv_flow_spec_tunnel); + struct ibv_flow_spec_tunnel tunnel = { + .type = IBV_FLOW_SPEC_VXLAN_TUNNEL, + .size = size, + }; +#else + const struct rte_flow_item_gre *spec = item->spec; + const struct rte_flow_item_gre *mask = item->mask; + unsigned int size = sizeof(struct ibv_flow_spec_gre); + struct ibv_flow_spec_gre tunnel = { + .type = IBV_FLOW_SPEC_GRE, + .size = size, + }; + + if (!mask) + mask = &rte_flow_item_gre_mask; + 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; + } +#endif + if (*item_flags & MLX5_FLOW_LAYER_OUTER_L3_IPV4) + flow_verbs_item_gre_ip_protocol_update(verbs->attr, + IBV_FLOW_SPEC_IPV4_EXT, + IPPROTO_GRE); + else + flow_verbs_item_gre_ip_protocol_update(verbs->attr, + IBV_FLOW_SPEC_IPV6, + IPPROTO_GRE); + flow_verbs_spec_add(dev_flow, &tunnel, size); + verbs->attr->priority = MLX5_PRIORITY_MAP_L2; + *item_flags |= MLX5_FLOW_LAYER_GRE; +} + +/** + * Convert the @p action into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested action + * into the flow. This function also return the action that was added. + * + * @param[in] item + * Item specification. + * @param[in, out] item_flags + * Bit mask that marks all detected items. + * @param[in, out] dev_flow + * Pointer to sepacific flow structure. + */ +static void +flow_verbs_translate_item_mpls(const struct rte_flow_item *item __rte_unused, + uint64_t *action_flags __rte_unused, + struct mlx5_flow *dev_flow __rte_unused) +{ +#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, + }; + + if (!mask) + mask = &rte_flow_item_mpls_mask; + 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; + } + flow_verbs_spec_add(dev_flow, &mpls, size); + dev_flow->verbs.attr->priority = MLX5_PRIORITY_MAP_L2; + *action_flags |= MLX5_FLOW_LAYER_MPLS; +#endif +} + +/** + * Convert the @p action into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested action + * into the flow. This function also return the action that was added. + * + * @param[in, out] action_flags + * Pointer to the detected actions. + * @param[in] dev_flow + * Pointer to mlx5_flow. + */ +static void +flow_verbs_translate_action_drop(uint64_t *action_flags, + struct mlx5_flow *dev_flow) +{ + 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, + }; + + flow_verbs_spec_add(dev_flow, &drop, size); + *action_flags |= MLX5_FLOW_ACTION_DROP; +} + +/** + * Convert the @p action into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested action + * into the flow. This function also return the action that was added. + * + * @param[in] action + * Action configuration. + * @param[in, out] action_flags + * Pointer to the detected actions. + * @param[in] dev_flow + * Pointer to mlx5_flow. + */ +static void +flow_verbs_translate_action_queue(const struct rte_flow_action *action, + uint64_t *action_flags, + struct mlx5_flow *dev_flow) +{ + const struct rte_flow_action_queue *queue = action->conf; + struct rte_flow *flow = dev_flow->flow; + + if (flow->queue) + (*flow->queue)[0] = queue->index; + flow->rss.queue_num = 1; + *action_flags |= MLX5_FLOW_ACTION_QUEUE; +} + +/** + * Convert the @p action into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested action + * into the flow. This function also return the action that was added. + * + * @param[in] action + * Action configuration. + * @param[in, out] action_flags + * Pointer to the detected actions. + * @param[in] dev_flow + * Pointer to mlx5_flow. + */ +static void +flow_verbs_translate_action_rss(const struct rte_flow_action *action, + uint64_t *action_flags, + struct mlx5_flow *dev_flow) +{ + const struct rte_flow_action_rss *rss = action->conf; + struct rte_flow *flow = dev_flow->flow; + + 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; + *action_flags |= MLX5_FLOW_ACTION_RSS; +} + +/** + * Convert the @p action into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested action + * into the flow. This function also return the action that was added. + * + * @param[in] action + * Action configuration. + * @param[in, out] action_flags + * Pointer to the detected actions. + * @param[in] dev_flow + * Pointer to mlx5_flow. + */ +static void +flow_verbs_translate_action_flag + (const struct rte_flow_action *action __rte_unused, + uint64_t *action_flags, + struct mlx5_flow *dev_flow) +{ + 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), + }; + *action_flags |= MLX5_FLOW_ACTION_MARK; + flow_verbs_spec_add(dev_flow, &tag, 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 +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 a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested action + * into the flow. This function also return the action that was added. + * + * @param[in] action + * Action configuration. + * @param[in, out] action_flags + * Pointer to the detected actions. + * @param[in] dev_flow + * Pointer to mlx5_flow. + */ +static void +flow_verbs_translate_action_mark(const struct rte_flow_action *action, + uint64_t *action_flags, + struct mlx5_flow *dev_flow) +{ + 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 = &dev_flow->verbs; + + if (*action_flags & MLX5_FLOW_ACTION_FLAG) { + flow_verbs_mark_update(verbs, mark->id); + size = 0; + } else { + tag.tag_id = mlx5_flow_mark_set(mark->id); + flow_verbs_spec_add(dev_flow, &tag, size); + } + *action_flags |= MLX5_FLOW_ACTION_MARK; +} + +/** + * Convert the @p action into a Verbs specification. This function assumes that + * the input is valid and that there is space to insert the requested action + * into the flow. This function also return the action that was added. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] action + * Action configuration. + * @param[in, out] action_flags + * Pointer to the detected actions. + * @param[in] dev_flow + * Pointer to mlx5_flow. + * @param[out] error + * Pointer to error structure. + * + * @return + * 0 On success else a negative errno value is returned and rte_errno is set. + */ +static int +flow_verbs_translate_action_count(struct rte_eth_dev *dev, + const struct rte_flow_action *action, + uint64_t *action_flags, + struct mlx5_flow *dev_flow, + struct rte_flow_error *error) +{ + const struct rte_flow_action_count *count = action->conf; + struct rte_flow *flow = dev_flow->flow; +#if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) || \ + defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) + 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 = flow_verbs_counter_new(dev, count->shared, + count->id); + if (!flow->counter) + return rte_flow_error_set(error, rte_errno, + RTE_FLOW_ERROR_TYPE_ACTION, + action, + "cannot get counter" + " context."); + } + *action_flags |= MLX5_FLOW_ACTION_COUNT; +#if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) + counter.counter_set_handle = flow->counter->cs->handle; + flow_verbs_spec_add(dev_flow, &counter, size); +#elif defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) + counter.counters = flow->counter->cs; + flow_verbs_spec_add(dev_flow, &counter, size); +#endif + return 0; +} + +/** + * Internal validation function. For validating both actions and items. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in] attr + * Pointer to the flow attributes. + * @param[in] items + * Pointer to the list of items. + * @param[in] actions + * Pointer to the list of actions. + * @param[out] error + * Pointer to the error structure. + * + * @return + * 0 on success, a negative errno value otherwise and rte_errno is set. + */ +static int +flow_verbs_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; + uint64_t action_flags = 0; + uint64_t item_flags = 0; + int tunnel = 0; + uint8_t next_protocol = 0xff; + + if (items == NULL) + return -1; + ret = mlx5_flow_validate_attributes(dev, attr, error); + if (ret < 0) + return ret; + for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) { + int ret = 0; + + tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL); + switch (items->type) { + case RTE_FLOW_ITEM_TYPE_VOID: + break; + case RTE_FLOW_ITEM_TYPE_ETH: + ret = mlx5_flow_validate_item_eth(items, item_flags, + error); + if (ret < 0) + return ret; + item_flags |= tunnel ? MLX5_FLOW_LAYER_INNER_L2 : + MLX5_FLOW_LAYER_OUTER_L2; + break; + case RTE_FLOW_ITEM_TYPE_VLAN: + ret = mlx5_flow_validate_item_vlan(items, item_flags, + error); + if (ret < 0) + return ret; + item_flags |= tunnel ? MLX5_FLOW_LAYER_INNER_VLAN : + MLX5_FLOW_LAYER_OUTER_VLAN; + break; + case RTE_FLOW_ITEM_TYPE_IPV4: + ret = mlx5_flow_validate_item_ipv4(items, item_flags, + error); + if (ret < 0) + return ret; + item_flags |= tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 : + MLX5_FLOW_LAYER_OUTER_L3_IPV4; + if (items->mask != NULL && + ((const struct rte_flow_item_ipv4 *) + items->mask)->hdr.next_proto_id) + next_protocol = + ((const struct rte_flow_item_ipv4 *) + (items->spec))->hdr.next_proto_id; + break; + case RTE_FLOW_ITEM_TYPE_IPV6: + ret = mlx5_flow_validate_item_ipv6(items, item_flags, + error); + if (ret < 0) + return ret; + item_flags |= tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 : + MLX5_FLOW_LAYER_OUTER_L3_IPV6; + if (items->mask != NULL && + ((const struct rte_flow_item_ipv6 *) + items->mask)->hdr.proto) + next_protocol = + ((const struct rte_flow_item_ipv6 *) + items->spec)->hdr.proto; + break; + case RTE_FLOW_ITEM_TYPE_UDP: + ret = mlx5_flow_validate_item_udp(items, item_flags, + next_protocol, + error); + if (ret < 0) + return ret; + item_flags |= tunnel ? MLX5_FLOW_LAYER_INNER_L4_UDP : + MLX5_FLOW_LAYER_OUTER_L4_UDP; + break; + case RTE_FLOW_ITEM_TYPE_TCP: + ret = mlx5_flow_validate_item_tcp + (items, item_flags, + next_protocol, + &rte_flow_item_tcp_mask, + error); + if (ret < 0) + return ret; + item_flags |= tunnel ? MLX5_FLOW_LAYER_INNER_L4_TCP : + MLX5_FLOW_LAYER_OUTER_L4_TCP; + break; + case RTE_FLOW_ITEM_TYPE_VXLAN: + ret = mlx5_flow_validate_item_vxlan(items, item_flags, + error); + if (ret < 0) + return ret; + item_flags |= MLX5_FLOW_LAYER_VXLAN; + break; + case RTE_FLOW_ITEM_TYPE_VXLAN_GPE: + ret = mlx5_flow_validate_item_vxlan_gpe(items, + item_flags, + dev, error); + if (ret < 0) + return ret; + item_flags |= MLX5_FLOW_LAYER_VXLAN_GPE; + break; + case RTE_FLOW_ITEM_TYPE_GRE: + ret = mlx5_flow_validate_item_gre(items, item_flags, + next_protocol, error); + if (ret < 0) + return ret; + item_flags |= MLX5_FLOW_LAYER_GRE; + break; + case RTE_FLOW_ITEM_TYPE_MPLS: + ret = mlx5_flow_validate_item_mpls(items, item_flags, + next_protocol, + error); + if (ret < 0) + return ret; + if (next_protocol != 0xff && + next_protocol != IPPROTO_MPLS) + return rte_flow_error_set + (error, EINVAL, + RTE_FLOW_ERROR_TYPE_ITEM, items, + "protocol filtering not compatible" + " with MPLS layer"); + item_flags |= MLX5_FLOW_LAYER_MPLS; + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + NULL, "item not supported"); + } + } + 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_validate_action_flag(action_flags, + attr, + error); + if (ret < 0) + return ret; + action_flags |= MLX5_FLOW_ACTION_FLAG; + break; + case RTE_FLOW_ACTION_TYPE_MARK: + ret = mlx5_flow_validate_action_mark(actions, + action_flags, + attr, + error); + if (ret < 0) + return ret; + action_flags |= MLX5_FLOW_ACTION_MARK; + break; + case RTE_FLOW_ACTION_TYPE_DROP: + ret = mlx5_flow_validate_action_drop(action_flags, + attr, + error); + if (ret < 0) + return ret; + action_flags |= MLX5_FLOW_ACTION_DROP; + break; + case RTE_FLOW_ACTION_TYPE_QUEUE: + ret = mlx5_flow_validate_action_queue(actions, + action_flags, dev, + attr, + error); + if (ret < 0) + return ret; + action_flags |= MLX5_FLOW_ACTION_QUEUE; + break; + case RTE_FLOW_ACTION_TYPE_RSS: + ret = mlx5_flow_validate_action_rss(actions, + action_flags, dev, + attr, + error); + if (ret < 0) + return ret; + action_flags |= MLX5_FLOW_ACTION_RSS; + break; + case RTE_FLOW_ACTION_TYPE_COUNT: + ret = mlx5_flow_validate_action_count(dev, attr, error); + if (ret < 0) + return ret; + action_flags |= MLX5_FLOW_ACTION_COUNT; + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + actions, + "action not supported"); + } + } + if (!(action_flags & MLX5_FLOW_FATE_ACTIONS)) + return rte_flow_error_set(error, EINVAL, + RTE_FLOW_ERROR_TYPE_ACTION, actions, + "no fate action is found"); + return 0; +} + +/** + * Calculate the required bytes that are needed for the action part of the verbs + * flow, in addtion returns bit-fields with all the detected action, in order to + * avoid another interation over the actions. + * + * @param[in] actions + * Pointer to the list of actions. + * @param[out] action_flags + * Pointer to the detected actions. + * + * @return + * The size of the memory needed for all actions. + */ +static int +flow_verbs_get_actions_and_size(const struct rte_flow_action actions[], + uint64_t *action_flags) +{ + int size = 0; + uint64_t detected_actions = 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: + size += sizeof(struct ibv_flow_spec_action_tag); + detected_actions |= MLX5_FLOW_ACTION_FLAG; + break; + case RTE_FLOW_ACTION_TYPE_MARK: + size += sizeof(struct ibv_flow_spec_action_tag); + detected_actions |= MLX5_FLOW_ACTION_MARK; + break; + case RTE_FLOW_ACTION_TYPE_DROP: + size += sizeof(struct ibv_flow_spec_action_drop); + detected_actions |= MLX5_FLOW_ACTION_DROP; + break; + case RTE_FLOW_ACTION_TYPE_QUEUE: + detected_actions |= MLX5_FLOW_ACTION_QUEUE; + break; + case RTE_FLOW_ACTION_TYPE_RSS: + detected_actions |= MLX5_FLOW_ACTION_RSS; + break; + case RTE_FLOW_ACTION_TYPE_COUNT: +#if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) || \ + defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) + size += sizeof(struct ibv_flow_spec_counter_action); +#endif + detected_actions |= MLX5_FLOW_ACTION_COUNT; + break; + default: + break; + } + } + *action_flags = detected_actions; + return size; +} + +/** + * Calculate the required bytes that are needed for the item part of the verbs + * flow, in addtion returns bit-fields with all the detected action, in order to + * avoid another interation over the actions. + * + * @param[in] actions + * Pointer to the list of items. + * @param[in, out] item_flags + * Pointer to the detected items. + * + * @return + * The size of the memory needed for all items. + */ +static int +flow_verbs_get_items_and_size(const struct rte_flow_item items[], + uint64_t *item_flags) +{ + int size = 0; + uint64_t detected_items = 0; + + for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) { + int tunnel = !!(detected_items & MLX5_FLOW_LAYER_TUNNEL); + + switch (items->type) { + case RTE_FLOW_ITEM_TYPE_VOID: + break; + case RTE_FLOW_ITEM_TYPE_ETH: + size += sizeof(struct ibv_flow_spec_eth); + detected_items |= tunnel ? MLX5_FLOW_LAYER_INNER_L2 : + MLX5_FLOW_LAYER_OUTER_L2; + break; + case RTE_FLOW_ITEM_TYPE_VLAN: + size += sizeof(struct ibv_flow_spec_eth); + detected_items |= tunnel ? MLX5_FLOW_LAYER_INNER_VLAN : + MLX5_FLOW_LAYER_OUTER_VLAN; + break; + case RTE_FLOW_ITEM_TYPE_IPV4: + size += sizeof(struct ibv_flow_spec_ipv4_ext); + detected_items |= tunnel ? + MLX5_FLOW_LAYER_INNER_L3_IPV4 : + MLX5_FLOW_LAYER_OUTER_L3_IPV4; + break; + case RTE_FLOW_ITEM_TYPE_IPV6: + size += sizeof(struct ibv_flow_spec_ipv6); + detected_items |= tunnel ? + MLX5_FLOW_LAYER_INNER_L3_IPV6 : + MLX5_FLOW_LAYER_OUTER_L3_IPV6; + break; + case RTE_FLOW_ITEM_TYPE_UDP: + size += sizeof(struct ibv_flow_spec_tcp_udp); + detected_items |= tunnel ? + MLX5_FLOW_LAYER_INNER_L4_UDP : + MLX5_FLOW_LAYER_OUTER_L4_UDP; + break; + case RTE_FLOW_ITEM_TYPE_TCP: + size += sizeof(struct ibv_flow_spec_tcp_udp); + detected_items |= tunnel ? + MLX5_FLOW_LAYER_INNER_L4_TCP : + MLX5_FLOW_LAYER_OUTER_L4_TCP; + break; + case RTE_FLOW_ITEM_TYPE_VXLAN: + size += sizeof(struct ibv_flow_spec_tunnel); + detected_items |= MLX5_FLOW_LAYER_VXLAN; + break; + case RTE_FLOW_ITEM_TYPE_VXLAN_GPE: + size += sizeof(struct ibv_flow_spec_tunnel); + detected_items |= MLX5_FLOW_LAYER_VXLAN_GPE; + break; +#ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT + case RTE_FLOW_ITEM_TYPE_GRE: + size += sizeof(struct ibv_flow_spec_gre); + detected_items |= MLX5_FLOW_LAYER_GRE; + break; + case RTE_FLOW_ITEM_TYPE_MPLS: + size += sizeof(struct ibv_flow_spec_mpls); + detected_items |= MLX5_FLOW_LAYER_MPLS; + break; +#else + case RTE_FLOW_ITEM_TYPE_GRE: + size += sizeof(struct ibv_flow_spec_tunnel); + detected_items |= MLX5_FLOW_LAYER_TUNNEL; + break; +#endif + default: + break; + } + } + *item_flags = detected_items; + return size; +} + +/** + * Internal preparation function. Allocate mlx5_flow with the required size. + * The required size is calculate based on the actions and items. This function + * also returns the detected actions and items for later use. + * + * @param[in] attr + * Pointer to the flow attributes. + * @param[in] items + * Pointer to the list of items. + * @param[in] actions + * Pointer to the list of actions. + * @param[out] item_flags + * Pointer to bit mask of all items detected. + * @param[out] action_flags + * Pointer to bit mask of all actions detected. + * @param[out] error + * Pointer to the error structure. + * + * @return + * Pointer to mlx5_flow object on success, otherwise NULL and rte_errno + * is set. + */ +static struct mlx5_flow * +flow_verbs_prepare(const struct rte_flow_attr *attr __rte_unused, + const struct rte_flow_item items[], + const struct rte_flow_action actions[], + uint64_t *item_flags, + uint64_t *action_flags, + struct rte_flow_error *error) +{ + uint32_t size = sizeof(struct mlx5_flow) + sizeof(struct ibv_flow_attr); + struct mlx5_flow *flow; + + size += flow_verbs_get_actions_and_size(actions, action_flags); + size += flow_verbs_get_items_and_size(items, item_flags); + 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; + } + flow->verbs.attr = (void *)(flow + 1); + flow->verbs.specs = + (uint8_t *)(flow + 1) + sizeof(struct ibv_flow_attr); + return flow; +} + +/** + * Fill the flow with verb spec. + * + * @param[in] dev + * Pointer to Ethernet device. + * @param[in, out] dev_flow + * Pointer to the mlx5 flow. + * @param[in] attr + * Pointer to the flow attributes. + * @param[in] items + * Pointer to the list of items. + * @param[in] actions + * Pointer to the list of actions. + * @param[out] error + * Pointer to the error structure. + * + * @return + * 0 on success, else a negative errno value otherwise and rte_ernno is set. + */ +static int +flow_verbs_translate(struct rte_eth_dev *dev, + struct mlx5_flow *dev_flow, + const struct rte_flow_attr *attr, + const struct rte_flow_item items[], + const struct rte_flow_action actions[], + struct rte_flow_error *error) +{ + uint64_t action_flags = 0; + uint64_t item_flags = 0; + uint64_t priority = attr->priority; + struct priv *priv = dev->data->dev_private; + + if (priority == MLX5_FLOW_PRIO_RSVD) + priority = priv->config.flow_prio - 1; + for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) { + int ret; + switch (actions->type) { + case RTE_FLOW_ACTION_TYPE_VOID: + break; + case RTE_FLOW_ACTION_TYPE_FLAG: + flow_verbs_translate_action_flag(actions, + &action_flags, + dev_flow); + break; + case RTE_FLOW_ACTION_TYPE_MARK: + flow_verbs_translate_action_mark(actions, + &action_flags, + dev_flow); + break; + case RTE_FLOW_ACTION_TYPE_DROP: + flow_verbs_translate_action_drop(&action_flags, + dev_flow); + break; + case RTE_FLOW_ACTION_TYPE_QUEUE: + flow_verbs_translate_action_queue(actions, + &action_flags, + dev_flow); + break; + case RTE_FLOW_ACTION_TYPE_RSS: + flow_verbs_translate_action_rss(actions, + &action_flags, + dev_flow); + break; + case RTE_FLOW_ACTION_TYPE_COUNT: + ret = flow_verbs_translate_action_count(dev, + actions, + &action_flags, + dev_flow, + error); + if (ret < 0) + return ret; + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + actions, + "action not supported"); + } + } + /* Device flow should have action flags by flow_drv_prepare(). */ + assert(dev_flow->flow->actions == action_flags); + for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) { + switch (items->type) { + case RTE_FLOW_ITEM_TYPE_VOID: + break; + case RTE_FLOW_ITEM_TYPE_ETH: + flow_verbs_translate_item_eth(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_VLAN: + flow_verbs_translate_item_vlan(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_IPV4: + flow_verbs_translate_item_ipv4(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_IPV6: + flow_verbs_translate_item_ipv6(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_UDP: + flow_verbs_translate_item_udp(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_TCP: + flow_verbs_translate_item_tcp(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_VXLAN: + flow_verbs_translate_item_vxlan(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_VXLAN_GPE: + flow_verbs_translate_item_vxlan_gpe(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_GRE: + flow_verbs_translate_item_gre(items, &item_flags, + dev_flow); + break; + case RTE_FLOW_ITEM_TYPE_MPLS: + flow_verbs_translate_item_mpls(items, &item_flags, + dev_flow); + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ITEM, + NULL, + "item not supported"); + } + } + dev_flow->verbs.attr->priority = + mlx5_flow_adjust_priority(dev, priority, + dev_flow->verbs.attr->priority); + return 0; +} + +/** + * Remove the flow from the NIC but keeps it in memory. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in, out] flow + * Pointer to flow structure. + */ +static void +flow_verbs_remove(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + struct mlx5_flow_verbs *verbs; + struct mlx5_flow *dev_flow; + + if (!flow) + return; + LIST_FOREACH(dev_flow, &flow->dev_flows, next) { + verbs = &dev_flow->verbs; + if (verbs->flow) { + claim_zero(mlx5_glue->destroy_flow(verbs->flow)); + verbs->flow = NULL; + } + if (verbs->hrxq) { + if (flow->actions & MLX5_FLOW_ACTION_DROP) + mlx5_hrxq_drop_release(dev); + else + mlx5_hrxq_release(dev, verbs->hrxq); + verbs->hrxq = NULL; + } + } + if (flow->counter) { + flow_verbs_counter_release(flow->counter); + flow->counter = NULL; + } +} + +/** + * Remove the flow from the NIC and the memory. + * + * @param[in] dev + * Pointer to the Ethernet device structure. + * @param[in, out] flow + * Pointer to flow structure. + */ +static void +flow_verbs_destroy(struct rte_eth_dev *dev, struct rte_flow *flow) +{ + struct mlx5_flow *dev_flow; + + if (!flow) + return; + flow_verbs_remove(dev, flow); + while (!LIST_EMPTY(&flow->dev_flows)) { + dev_flow = LIST_FIRST(&flow->dev_flows); + LIST_REMOVE(dev_flow, next); + rte_free(dev_flow); + } +} + +/** + * Apply the flow to the NIC. + * + * @param[in] dev + * Pointer to the 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 +flow_verbs_apply(struct rte_eth_dev *dev, struct rte_flow *flow, + struct rte_flow_error *error) +{ + struct mlx5_flow_verbs *verbs; + struct mlx5_flow *dev_flow; + int err; + + LIST_FOREACH(dev_flow, &flow->dev_flows, next) { + verbs = &dev_flow->verbs; + if (flow->actions & MLX5_FLOW_ACTION_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, + !!(dev_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; + } + } + return 0; +error: + err = rte_errno; /* Save rte_errno before cleanup. */ + LIST_FOREACH(dev_flow, &flow->dev_flows, next) { + verbs = &dev_flow->verbs; + if (verbs->hrxq) { + if (flow->actions & MLX5_FLOW_ACTION_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; +} + +/** + * Query a flow. + * + * @see rte_flow_query() + * @see rte_flow_ops + */ +static int +flow_verbs_query(struct rte_eth_dev *dev, + struct rte_flow *flow, + const struct rte_flow_action *actions, + void *data, + struct rte_flow_error *error) +{ + int ret = -EINVAL; + + 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 = flow_verbs_counter_query(dev, flow, data, error); + break; + default: + return rte_flow_error_set(error, ENOTSUP, + RTE_FLOW_ERROR_TYPE_ACTION, + actions, + "action not supported"); + } + } + return ret; +} + +const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops = { + .validate = flow_verbs_validate, + .prepare = flow_verbs_prepare, + .translate = flow_verbs_translate, + .apply = flow_verbs_apply, + .remove = flow_verbs_remove, + .destroy = flow_verbs_destroy, + .query = flow_verbs_query, +}; |