diff options
Diffstat (limited to 'drivers/net/mlx5/mlx5_flow.h')
| -rw-r--r-- | drivers/net/mlx5/mlx5_flow.h | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h new file mode 100644 index 00000000..61299d66 --- /dev/null +++ b/drivers/net/mlx5/mlx5_flow.h @@ -0,0 +1,375 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2018 Mellanox Technologies, Ltd + */ + +#ifndef RTE_PMD_MLX5_FLOW_H_ +#define RTE_PMD_MLX5_FLOW_H_ + +#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 + +/* 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) + +/* General pattern items bits. */ +#define MLX5_FLOW_ITEM_METADATA (1u << 16) + +/* 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 */ +#define MLX5_FLOW_ACTION_DROP (1u << 0) +#define MLX5_FLOW_ACTION_QUEUE (1u << 1) +#define MLX5_FLOW_ACTION_RSS (1u << 2) +#define MLX5_FLOW_ACTION_FLAG (1u << 3) +#define MLX5_FLOW_ACTION_MARK (1u << 4) +#define MLX5_FLOW_ACTION_COUNT (1u << 5) +#define MLX5_FLOW_ACTION_PORT_ID (1u << 6) +#define MLX5_FLOW_ACTION_OF_POP_VLAN (1u << 7) +#define MLX5_FLOW_ACTION_OF_PUSH_VLAN (1u << 8) +#define MLX5_FLOW_ACTION_OF_SET_VLAN_VID (1u << 9) +#define MLX5_FLOW_ACTION_OF_SET_VLAN_PCP (1u << 10) +#define MLX5_FLOW_ACTION_SET_IPV4_SRC (1u << 11) +#define MLX5_FLOW_ACTION_SET_IPV4_DST (1u << 12) +#define MLX5_FLOW_ACTION_SET_IPV6_SRC (1u << 13) +#define MLX5_FLOW_ACTION_SET_IPV6_DST (1u << 14) +#define MLX5_FLOW_ACTION_SET_TP_SRC (1u << 15) +#define MLX5_FLOW_ACTION_SET_TP_DST (1u << 16) +#define MLX5_FLOW_ACTION_JUMP (1u << 17) +#define MLX5_FLOW_ACTION_SET_TTL (1u << 18) +#define MLX5_FLOW_ACTION_DEC_TTL (1u << 19) +#define MLX5_FLOW_ACTION_SET_MAC_SRC (1u << 20) +#define MLX5_FLOW_ACTION_SET_MAC_DST (1u << 21) + +#define MLX5_FLOW_FATE_ACTIONS \ + (MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_QUEUE | MLX5_FLOW_ACTION_RSS) + +#ifndef IPPROTO_MPLS +#define IPPROTO_MPLS 137 +#endif + +/* UDP port numbers for VxLAN. */ +#define MLX5_UDP_PORT_VXLAN 4789 +#define MLX5_UDP_PORT_VXLAN_GPE 4790 + +/* Priority reserved for default flows. */ +#define MLX5_FLOW_PRIO_RSVD ((uint32_t)-1) + +/* + * 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 + +/* Valid layer type for IPV4 RSS. */ +#define MLX5_IPV4_LAYER_TYPES \ + (ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | \ + ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_NONFRAG_IPV4_UDP | \ + ETH_RSS_NONFRAG_IPV4_OTHER) + +/* IBV hash source bits for IPV4. */ +#define MLX5_IPV4_IBV_RX_HASH (IBV_RX_HASH_SRC_IPV4 | IBV_RX_HASH_DST_IPV4) + +/* Valid layer type for IPV6 RSS. */ +#define MLX5_IPV6_LAYER_TYPES \ + (ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | ETH_RSS_NONFRAG_IPV6_TCP | \ + ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_IPV6_EX | ETH_RSS_IPV6_TCP_EX | \ + ETH_RSS_IPV6_UDP_EX | ETH_RSS_NONFRAG_IPV6_OTHER) + +/* IBV hash source bits for IPV6. */ +#define MLX5_IPV6_IBV_RX_HASH (IBV_RX_HASH_SRC_IPV6 | IBV_RX_HASH_DST_IPV6) + +/* Max number of actions per DV flow. */ +#define MLX5_DV_MAX_NUMBER_OF_ACTIONS 8 + +enum mlx5_flow_drv_type { + MLX5_FLOW_TYPE_MIN, + MLX5_FLOW_TYPE_DV, + MLX5_FLOW_TYPE_TCF, + MLX5_FLOW_TYPE_VERBS, + MLX5_FLOW_TYPE_MAX, +}; + +/* Matcher PRM representation */ +struct mlx5_flow_dv_match_params { + size_t size; + /**< Size of match value. Do NOT split size and key! */ + uint32_t buf[MLX5_ST_SZ_DW(fte_match_param)]; + /**< Matcher value. This value is used as the mask or as a key. */ +}; + +#define MLX5_DV_MAX_NUMBER_OF_ACTIONS 8 + +/* Matcher structure. */ +struct mlx5_flow_dv_matcher { + LIST_ENTRY(mlx5_flow_dv_matcher) next; + /* Pointer to the next element. */ + rte_atomic32_t refcnt; /**< Reference counter. */ + void *matcher_object; /**< Pointer to DV matcher */ + uint16_t crc; /**< CRC of key. */ + uint16_t priority; /**< Priority of matcher. */ + uint8_t egress; /**< Egress matcher. */ + struct mlx5_flow_dv_match_params mask; /**< Matcher mask. */ +}; + +/* DV flows structure. */ +struct mlx5_flow_dv { + uint64_t hash_fields; /**< Fields that participate in the hash. */ + struct mlx5_hrxq *hrxq; /**< Hash Rx queues. */ + /* Flow DV api: */ + struct mlx5_flow_dv_matcher *matcher; /**< Cache to matcher. */ + struct mlx5_flow_dv_match_params value; + /**< Holds the value that the packet is compared to. */ + struct ibv_flow *flow; /**< Installed flow. */ +#ifdef HAVE_IBV_FLOW_DV_SUPPORT + struct mlx5dv_flow_action_attr actions[MLX5_DV_MAX_NUMBER_OF_ACTIONS]; + /**< Action list. */ +#endif + int actions_n; /**< number of actions. */ +}; + +/** Linux TC flower driver for E-Switch flow. */ +struct mlx5_flow_tcf { + struct nlmsghdr *nlh; + struct tcmsg *tcm; +}; + +/* Verbs specification header. */ +struct ibv_spec_header { + enum ibv_flow_spec_type type; + uint16_t size; +}; + +/** 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. */ +}; + +/** Device flow structure. */ +struct mlx5_flow { + LIST_ENTRY(mlx5_flow) next; + struct rte_flow *flow; /**< Pointer to the main flow. */ + uint64_t layers; + /**< Bit-fields of present layers, see MLX5_FLOW_LAYER_*. */ + union { +#ifdef HAVE_IBV_FLOW_DV_SUPPORT + struct mlx5_flow_dv dv; +#endif + struct mlx5_flow_tcf tcf; + struct mlx5_flow_verbs verbs; + }; +}; + +/* 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. */ +#if defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) + struct ibv_counter_set *cs; /**< Holds the counters for the rule. */ +#elif defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) + struct ibv_counters *cs; /**< Holds the counters for the rule. */ +#endif + 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. */ + enum mlx5_flow_drv_type drv_type; /**< Drvier type. */ + struct mlx5_flow_counter *counter; /**< Holds 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. */ + LIST_HEAD(dev_flows, mlx5_flow) dev_flows; + /**< Device flows that are part of the flow. */ + uint64_t actions; + /**< Bit-fields of detected actions, see MLX5_FLOW_ACTION_*. */ +}; +typedef int (*mlx5_flow_validate_t)(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); +typedef struct mlx5_flow *(*mlx5_flow_prepare_t) + (const struct rte_flow_attr *attr, 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); +typedef int (*mlx5_flow_translate_t)(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); +typedef int (*mlx5_flow_apply_t)(struct rte_eth_dev *dev, struct rte_flow *flow, + struct rte_flow_error *error); +typedef void (*mlx5_flow_remove_t)(struct rte_eth_dev *dev, + struct rte_flow *flow); +typedef void (*mlx5_flow_destroy_t)(struct rte_eth_dev *dev, + struct rte_flow *flow); +typedef int (*mlx5_flow_query_t)(struct rte_eth_dev *dev, + struct rte_flow *flow, + const struct rte_flow_action *actions, + void *data, + struct rte_flow_error *error); +struct mlx5_flow_driver_ops { + mlx5_flow_validate_t validate; + mlx5_flow_prepare_t prepare; + mlx5_flow_translate_t translate; + mlx5_flow_apply_t apply; + mlx5_flow_remove_t remove; + mlx5_flow_destroy_t destroy; + mlx5_flow_query_t query; +}; + +/* mlx5_flow.c */ + +uint64_t mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow, int tunnel, + uint64_t layer_types, + uint64_t hash_fields); +uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority, + uint32_t subpriority); +int mlx5_flow_validate_action_count(struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + struct rte_flow_error *error); +int mlx5_flow_validate_action_drop(uint64_t action_flags, + const struct rte_flow_attr *attr, + struct rte_flow_error *error); +int mlx5_flow_validate_action_flag(uint64_t action_flags, + const struct rte_flow_attr *attr, + struct rte_flow_error *error); +int mlx5_flow_validate_action_mark(const struct rte_flow_action *action, + uint64_t action_flags, + const struct rte_flow_attr *attr, + struct rte_flow_error *error); +int mlx5_flow_validate_action_queue(const struct rte_flow_action *action, + uint64_t action_flags, + struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + struct rte_flow_error *error); +int mlx5_flow_validate_action_rss(const struct rte_flow_action *action, + uint64_t action_flags, + struct rte_eth_dev *dev, + const struct rte_flow_attr *attr, + struct rte_flow_error *error); +int mlx5_flow_validate_attributes(struct rte_eth_dev *dev, + const struct rte_flow_attr *attributes, + struct rte_flow_error *error); +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); +int mlx5_flow_validate_item_eth(const struct rte_flow_item *item, + uint64_t item_flags, + struct rte_flow_error *error); +int mlx5_flow_validate_item_gre(const struct rte_flow_item *item, + uint64_t item_flags, + uint8_t target_protocol, + struct rte_flow_error *error); +int mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item, + int64_t item_flags, + struct rte_flow_error *error); +int mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item, + uint64_t item_flags, + struct rte_flow_error *error); +int mlx5_flow_validate_item_mpls(const struct rte_flow_item *item, + uint64_t item_flags, + uint8_t target_protocol, + struct rte_flow_error *error); +int mlx5_flow_validate_item_tcp(const struct rte_flow_item *item, + uint64_t item_flags, + uint8_t target_protocol, + const struct rte_flow_item_tcp *flow_mask, + struct rte_flow_error *error); +int mlx5_flow_validate_item_udp(const struct rte_flow_item *item, + uint64_t item_flags, + uint8_t target_protocol, + struct rte_flow_error *error); +int mlx5_flow_validate_item_vlan(const struct rte_flow_item *item, + int64_t item_flags, + struct rte_flow_error *error); +int mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item, + uint64_t item_flags, + struct rte_flow_error *error); +int mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item, + uint64_t item_flags, + struct rte_eth_dev *dev, + struct rte_flow_error *error); + +/* mlx5_flow_tcf.c */ + +int mlx5_flow_tcf_init(struct mlx5_flow_tcf_context *ctx, + unsigned int ifindex, struct rte_flow_error *error); +struct mlx5_flow_tcf_context *mlx5_flow_tcf_context_create(void); +void mlx5_flow_tcf_context_destroy(struct mlx5_flow_tcf_context *ctx); + +#endif /* RTE_PMD_MLX5_FLOW_H_ */ |