net/mlx5: add flow IPv4 item
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com> Acked-by: Yongseok Koh <yskoh@mellanox.com>
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@ -506,6 +506,93 @@ mlx5_flow_item_vlan(const struct rte_flow_item *item, struct rte_flow *flow,
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return size;
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}
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/**
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* Convert the @p item into a Verbs specification after ensuring the NIC
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* will understand and process it correctly.
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* If the necessary size for the conversion is greater than the @p flow_size,
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* nothing is written in @p flow, the validation is still performed.
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*
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* @param[in] item
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* Item specification.
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* @param[in, out] flow
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* Pointer to flow structure.
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* @param[in] flow_size
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* Size in bytes of the available space in @p flow, if too small, nothing is
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* written.
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* @param[out] error
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* Pointer to error structure.
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*
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* @return
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* On success the number of bytes consumed/necessary, if the returned value
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* is lesser or equal to @p flow_size, the @p item has fully been converted,
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* otherwise another call with this returned memory size should be done.
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* On error, a negative errno value is returned and rte_errno is set.
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*/
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static int
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mlx5_flow_item_ipv4(const struct rte_flow_item *item, struct rte_flow *flow,
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const size_t flow_size, struct rte_flow_error *error)
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{
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const struct rte_flow_item_ipv4 *spec = item->spec;
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const struct rte_flow_item_ipv4 *mask = item->mask;
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const struct rte_flow_item_ipv4 nic_mask = {
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.hdr = {
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.src_addr = RTE_BE32(0xffffffff),
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.dst_addr = RTE_BE32(0xffffffff),
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.type_of_service = 0xff,
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.next_proto_id = 0xff,
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},
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};
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unsigned int size = sizeof(struct ibv_flow_spec_ipv4_ext);
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struct ibv_flow_spec_ipv4_ext ipv4 = {
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.type = IBV_FLOW_SPEC_IPV4_EXT,
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.size = size,
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};
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int ret;
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if (flow->layers & MLX5_FLOW_LAYER_OUTER_L3)
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return rte_flow_error_set(error, ENOTSUP,
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RTE_FLOW_ERROR_TYPE_ITEM,
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item,
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"multiple L3 layers not supported");
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else if (flow->layers & MLX5_FLOW_LAYER_OUTER_L4)
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return rte_flow_error_set(error, ENOTSUP,
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RTE_FLOW_ERROR_TYPE_ITEM,
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item,
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"L3 cannot follow an L4 layer.");
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if (!mask)
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mask = &rte_flow_item_ipv4_mask;
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ret = mlx5_flow_item_acceptable
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(item, (const uint8_t *)mask,
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(const uint8_t *)&nic_mask,
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sizeof(struct rte_flow_item_ipv4), error);
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if (ret < 0)
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return ret;
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flow->layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
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if (size > flow_size)
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return size;
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if (spec) {
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ipv4.val = (struct ibv_flow_ipv4_ext_filter){
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.src_ip = spec->hdr.src_addr,
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.dst_ip = spec->hdr.dst_addr,
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.proto = spec->hdr.next_proto_id,
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.tos = spec->hdr.type_of_service,
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};
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ipv4.mask = (struct ibv_flow_ipv4_ext_filter){
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.src_ip = mask->hdr.src_addr,
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.dst_ip = mask->hdr.dst_addr,
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.proto = mask->hdr.next_proto_id,
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.tos = mask->hdr.type_of_service,
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};
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/* Remove unwanted bits from values. */
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ipv4.val.src_ip &= ipv4.mask.src_ip;
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ipv4.val.dst_ip &= ipv4.mask.dst_ip;
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ipv4.val.proto &= ipv4.mask.proto;
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ipv4.val.tos &= ipv4.mask.tos;
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}
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mlx5_flow_spec_verbs_add(flow, &ipv4, size);
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return size;
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}
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/**
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* Convert the @p pattern into a Verbs specifications after ensuring the NIC
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* will understand and process it correctly.
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@ -551,6 +638,9 @@ mlx5_flow_items(const struct rte_flow_item pattern[],
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case RTE_FLOW_ITEM_TYPE_VLAN:
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ret = mlx5_flow_item_vlan(pattern, flow, remain, error);
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break;
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case RTE_FLOW_ITEM_TYPE_IPV4:
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ret = mlx5_flow_item_ipv4(pattern, flow, remain, error);
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break;
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default:
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return rte_flow_error_set(error, ENOTSUP,
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RTE_FLOW_ERROR_TYPE_ITEM,
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