From 750e48c7d8c39531c6e0a3aab0f2e11f02af19b4 Mon Sep 17 00:00:00 2001 From: Matan Azrad Date: Thu, 25 Feb 2021 10:45:00 +0000 Subject: [PATCH] common/mlx5: add DevX commands for queue counters A queue counter set is an HW object that can be assigned to any RQ\QP and it counts HW events on the assigned QPs\RQs. Add DevX API to allocate and query queue counter set object. The only used counter event is the "out of buffer" where the queue drops packets when no SW buffer is available to receive it. Cc: stable@dpdk.org Signed-off-by: Matan Azrad Acked-by: Viacheslav Ovsiienko --- drivers/common/mlx5/mlx5_devx_cmds.c | 72 +++++++++++++++++++++++++ drivers/common/mlx5/mlx5_devx_cmds.h | 6 +++ drivers/common/mlx5/mlx5_prm.h | 81 ++++++++++++++++++++++++++++ drivers/common/mlx5/version.map | 4 +- 4 files changed, 162 insertions(+), 1 deletion(-) diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c index 2dcc1ff5513..0060c37fc09 100644 --- a/drivers/common/mlx5/mlx5_devx_cmds.c +++ b/drivers/common/mlx5/mlx5_devx_cmds.c @@ -2193,3 +2193,75 @@ mlx5_devx_cmd_wq_query(void *wq, uint32_t *counter_set_id) #endif } +/* + * Allocate queue counters via devx interface. + * + * @param[in] ctx + * Context returned from mlx5 open_device() glue function. + * + * @return + * Pointer to counter object on success, a NULL value otherwise and + * rte_errno is set. + */ +struct mlx5_devx_obj * +mlx5_devx_cmd_queue_counter_alloc(void *ctx) +{ + struct mlx5_devx_obj *dcs = mlx5_malloc(MLX5_MEM_ZERO, sizeof(*dcs), 0, + SOCKET_ID_ANY); + uint32_t in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {0}; + uint32_t out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {0}; + + if (!dcs) { + rte_errno = ENOMEM; + return NULL; + } + MLX5_SET(alloc_q_counter_in, in, opcode, MLX5_CMD_OP_ALLOC_Q_COUNTER); + dcs->obj = mlx5_glue->devx_obj_create(ctx, in, sizeof(in), out, + sizeof(out)); + if (!dcs->obj) { + DRV_LOG(DEBUG, "Can't allocate q counter set by DevX - error " + "%d.", errno); + rte_errno = errno; + mlx5_free(dcs); + return NULL; + } + dcs->id = MLX5_GET(alloc_q_counter_out, out, counter_set_id); + return dcs; +} + +/** + * Query queue counters values. + * + * @param[in] dcs + * devx object of the queue counter set. + * @param[in] clear + * Whether hardware should clear the counters after the query or not. + * @param[out] out_of_buffers + * Number of dropped occurred due to lack of WQE for the associated QPs/RQs. + * + * @return + * 0 on success, a negative value otherwise. + */ +int +mlx5_devx_cmd_queue_counter_query(struct mlx5_devx_obj *dcs, int clear, + uint32_t *out_of_buffers) +{ + uint32_t out[MLX5_ST_SZ_BYTES(query_q_counter_out)] = {0}; + uint32_t in[MLX5_ST_SZ_DW(query_q_counter_in)] = {0}; + int rc; + + MLX5_SET(query_q_counter_in, in, opcode, + MLX5_CMD_OP_QUERY_Q_COUNTER); + MLX5_SET(query_q_counter_in, in, op_mod, 0); + MLX5_SET(query_q_counter_in, in, counter_set_id, dcs->id); + MLX5_SET(query_q_counter_in, in, clear, !!clear); + rc = mlx5_glue->devx_obj_query(dcs->obj, in, sizeof(in), out, + sizeof(out)); + if (rc) { + DRV_LOG(ERR, "Failed to query devx q counter set - rc %d", rc); + rte_errno = rc; + return -rc; + } + *out_of_buffers = MLX5_GET(query_q_counter_out, out, out_of_buffer); + return 0; +} diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h index f01d5a88028..bc66d28e832 100644 --- a/drivers/common/mlx5/mlx5_devx_cmds.h +++ b/drivers/common/mlx5/mlx5_devx_cmds.h @@ -542,4 +542,10 @@ struct mlx5_devx_obj *mlx5_devx_cmd_alloc_pd(void *ctx); __rte_internal int mlx5_devx_cmd_wq_query(void *wq, uint32_t *counter_set_id); + +__rte_internal +struct mlx5_devx_obj *mlx5_devx_cmd_queue_counter_alloc(void *ctx); +__rte_internal +int mlx5_devx_cmd_queue_counter_query(struct mlx5_devx_obj *dcs, int clear, + uint32_t *out_of_buffers); #endif /* RTE_PMD_MLX5_DEVX_CMDS_H_ */ diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h index f8327158fdb..01a039f1f71 100644 --- a/drivers/common/mlx5/mlx5_prm.h +++ b/drivers/common/mlx5/mlx5_prm.h @@ -901,6 +901,8 @@ enum { MLX5_CMD_OP_SUSPEND_QP = 0x50F, MLX5_CMD_OP_RESUME_QP = 0x510, MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT = 0x754, + MLX5_CMD_OP_ALLOC_Q_COUNTER = 0x771, + MLX5_CMD_OP_QUERY_Q_COUNTER = 0x773, MLX5_CMD_OP_ALLOC_PD = 0x800, MLX5_CMD_OP_DEALLOC_PD = 0x801, MLX5_CMD_OP_ACCESS_REGISTER = 0x805, @@ -3213,6 +3215,85 @@ struct mlx5_ifc_query_regexp_register_out_bits { u8 register_data[0x20]; }; +/* Queue counters. */ +struct mlx5_ifc_alloc_q_counter_out_bits { + u8 status[0x8]; + u8 reserved_at_8[0x18]; + u8 syndrome[0x20]; + u8 reserved_at_40[0x18]; + u8 counter_set_id[0x8]; + u8 reserved_at_60[0x20]; +}; + +struct mlx5_ifc_alloc_q_counter_in_bits { + u8 opcode[0x10]; + u8 uid[0x10]; + u8 reserved_at_20[0x10]; + u8 op_mod[0x10]; + u8 reserved_at_40[0x40]; +}; + +struct mlx5_ifc_query_q_counter_out_bits { + u8 status[0x8]; + u8 reserved_at_8[0x18]; + u8 syndrome[0x20]; + u8 reserved_at_40[0x40]; + u8 rx_write_requests[0x20]; + u8 reserved_at_a0[0x20]; + u8 rx_read_requests[0x20]; + u8 reserved_at_e0[0x20]; + u8 rx_atomic_requests[0x20]; + u8 reserved_at_120[0x20]; + u8 rx_dct_connect[0x20]; + u8 reserved_at_160[0x20]; + u8 out_of_buffer[0x20]; + u8 reserved_at_1a0[0x20]; + u8 out_of_sequence[0x20]; + u8 reserved_at_1e0[0x20]; + u8 duplicate_request[0x20]; + u8 reserved_at_220[0x20]; + u8 rnr_nak_retry_err[0x20]; + u8 reserved_at_260[0x20]; + u8 packet_seq_err[0x20]; + u8 reserved_at_2a0[0x20]; + u8 implied_nak_seq_err[0x20]; + u8 reserved_at_2e0[0x20]; + u8 local_ack_timeout_err[0x20]; + u8 reserved_at_320[0xa0]; + u8 resp_local_length_error[0x20]; + u8 req_local_length_error[0x20]; + u8 resp_local_qp_error[0x20]; + u8 local_operation_error[0x20]; + u8 resp_local_protection[0x20]; + u8 req_local_protection[0x20]; + u8 resp_cqe_error[0x20]; + u8 req_cqe_error[0x20]; + u8 req_mw_binding[0x20]; + u8 req_bad_response[0x20]; + u8 req_remote_invalid_request[0x20]; + u8 resp_remote_invalid_request[0x20]; + u8 req_remote_access_errors[0x20]; + u8 resp_remote_access_errors[0x20]; + u8 req_remote_operation_errors[0x20]; + u8 req_transport_retries_exceeded[0x20]; + u8 cq_overflow[0x20]; + u8 resp_cqe_flush_error[0x20]; + u8 req_cqe_flush_error[0x20]; + u8 reserved_at_620[0x1e0]; +}; + +struct mlx5_ifc_query_q_counter_in_bits { + u8 opcode[0x10]; + u8 uid[0x10]; + u8 reserved_at_20[0x10]; + u8 op_mod[0x10]; + u8 reserved_at_40[0x80]; + u8 clear[0x1]; + u8 reserved_at_c1[0x1f]; + u8 reserved_at_e0[0x18]; + u8 counter_set_id[0x8]; +}; + /* CQE format mask. */ #define MLX5E_CQE_FORMAT_MASK 0xc diff --git a/drivers/common/mlx5/version.map b/drivers/common/mlx5/version.map index edd6c0e757d..91f3fa5779a 100644 --- a/drivers/common/mlx5/version.map +++ b/drivers/common/mlx5/version.map @@ -22,7 +22,7 @@ INTERNAL { mlx5_devx_cmd_create_tis; mlx5_devx_cmd_create_virtio_q_counters; mlx5_devx_cmd_create_virtq; - mlx5_devx_cmd_create_flow_hit_aso_obj; + mlx5_devx_cmd_create_flow_hit_aso_obj; mlx5_devx_cmd_create_geneve_tlv_option; mlx5_devx_cmd_destroy; mlx5_devx_cmd_flow_counter_alloc; @@ -40,6 +40,8 @@ INTERNAL { mlx5_devx_cmd_query_parse_samples; mlx5_devx_cmd_query_virtio_q_counters; mlx5_devx_cmd_query_virtq; + mlx5_devx_cmd_queue_counter_alloc; + mlx5_devx_cmd_queue_counter_query; mlx5_devx_cmd_register_read; mlx5_devx_cmd_wq_query; mlx5_devx_get_out_command_status;