From: Nelio Laranjeiro Date: Thu, 12 Jul 2018 09:31:07 +0000 (+0200) Subject: net/mlx5: add count flow action X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=60bd8c9747e8;p=dpdk.git net/mlx5: add count flow action This is only supported by Mellanox OFED. Signed-off-by: Nelio Laranjeiro Acked-by: Yongseok Koh --- diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index 9949cd3fa6..131be334c0 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -188,6 +188,8 @@ struct priv { struct mlx5_drop drop_queue; /* Flow drop queues. */ struct mlx5_flows flows; /* RTE Flow rules. */ struct mlx5_flows ctrl_flows; /* Control flow rules. */ + LIST_HEAD(counters, mlx5_flow_counter) flow_counters; + /* Flow counters. */ struct { uint32_t dev_gen; /* Generation number to flush local caches. */ rte_rwlock_t rwlock; /* MR Lock. */ diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c index 146f1b8697..6fa4e30aef 100644 --- a/drivers/net/mlx5/mlx5_flow.c +++ b/drivers/net/mlx5/mlx5_flow.c @@ -88,6 +88,7 @@ extern const struct eth_dev_ops mlx5_dev_ops_isolate; /* 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 @@ -249,6 +250,17 @@ struct mlx5_flow_verbs { 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. */ @@ -264,6 +276,7 @@ struct rte_flow { 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. */ @@ -275,6 +288,7 @@ static const struct rte_flow_ops mlx5_flow_ops = { .destroy = mlx5_flow_destroy, .flush = mlx5_flow_flush, .isolate = mlx5_flow_isolate, + .query = mlx5_flow_query, }; /* Convert FDIR request to Generic flow. */ @@ -454,6 +468,80 @@ mlx5_flow_adjust_priority(struct rte_eth_dev *dev, struct rte_flow *flow) 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 != 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. @@ -2128,6 +2216,70 @@ mlx5_flow_action_mark(const struct rte_flow_action *action, 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. @@ -2187,6 +2339,10 @@ mlx5_flow_actions(struct rte_eth_dev *dev, 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, @@ -2568,6 +2724,10 @@ mlx5_flow_remove(struct rte_eth_dev *dev, struct rte_flow *flow) verbs->hrxq = NULL; } } + if (flow->counter) { + mlx5_flow_counter_release(flow->counter); + flow->counter = NULL; + } } /** @@ -3017,6 +3177,88 @@ mlx5_flow_isolate(struct rte_eth_dev *dev, 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 + 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; +#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. *