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Miller" , Jakub Kicinski , Paolo Abeni , Eric Dumazet Cc: Saeed Mahameed , netdev@vger.kernel.org, Tariq Toukan , Gal Pressman Subject: [net-next 03/14] net/mlx5e: Expose rx_oversize_pkts_buffer counter Date: Sun, 17 Jul 2022 14:33:41 -0700 Message-Id: <20220717213352.89838-4-saeed@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220717213352.89838-1-saeed@kernel.org> References: <20220717213352.89838-1-saeed@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Gal Pressman Add the rx_oversize_pkts_buffer counter to ethtool statistics. This counter exposes the number of dropped received packets due to length which arrived to RQ and exceed software buffer size allocated by the device for incoming traffic. It might imply that the device MTU is larger than the software buffers size. Signed-off-by: Gal Pressman Reviewed-by: Tariq Toukan Signed-off-by: Saeed Mahameed --- .../ethernet/mellanox/mlx5/core/en_stats.c | 21 ++++++++++++++++++- include/linux/mlx5/mlx5_ifc.h | 8 +++++-- 2 files changed, 26 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c index 1e87bb2b7541..f3e1145a2bcc 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c @@ -641,17 +641,26 @@ static const struct counter_desc vnic_env_stats_dev_oob_desc[] = { VNIC_ENV_OFF(vport_env.internal_rq_out_of_buffer) }, }; +static const struct counter_desc vnic_env_stats_drop_desc[] = { + { "rx_oversize_pkts_buffer", + VNIC_ENV_OFF(vport_env.eth_wqe_too_small) }, +}; + #define NUM_VNIC_ENV_STEER_COUNTERS(dev) \ (MLX5_CAP_GEN(dev, nic_receive_steering_discard) ? \ ARRAY_SIZE(vnic_env_stats_steer_desc) : 0) #define NUM_VNIC_ENV_DEV_OOB_COUNTERS(dev) \ (MLX5_CAP_GEN(dev, vnic_env_int_rq_oob) ? \ ARRAY_SIZE(vnic_env_stats_dev_oob_desc) : 0) +#define NUM_VNIC_ENV_DROP_COUNTERS(dev) \ + (MLX5_CAP_GEN(dev, eth_wqe_too_small) ? \ + ARRAY_SIZE(vnic_env_stats_drop_desc) : 0) static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(vnic_env) { return NUM_VNIC_ENV_STEER_COUNTERS(priv->mdev) + - NUM_VNIC_ENV_DEV_OOB_COUNTERS(priv->mdev); + NUM_VNIC_ENV_DEV_OOB_COUNTERS(priv->mdev) + + NUM_VNIC_ENV_DROP_COUNTERS(priv->mdev); } static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(vnic_env) @@ -665,6 +674,11 @@ static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(vnic_env) for (i = 0; i < NUM_VNIC_ENV_DEV_OOB_COUNTERS(priv->mdev); i++) strcpy(data + (idx++) * ETH_GSTRING_LEN, vnic_env_stats_dev_oob_desc[i].format); + + for (i = 0; i < NUM_VNIC_ENV_DROP_COUNTERS(priv->mdev); i++) + strcpy(data + (idx++) * ETH_GSTRING_LEN, + vnic_env_stats_drop_desc[i].format); + return idx; } @@ -679,6 +693,11 @@ static MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(vnic_env) for (i = 0; i < NUM_VNIC_ENV_DEV_OOB_COUNTERS(priv->mdev); i++) data[idx++] = MLX5E_READ_CTR32_BE(priv->stats.vnic.query_vnic_env_out, vnic_env_stats_dev_oob_desc, i); + + for (i = 0; i < NUM_VNIC_ENV_DROP_COUNTERS(priv->mdev); i++) + data[idx++] = MLX5E_READ_CTR32_BE(priv->stats.vnic.query_vnic_env_out, + vnic_env_stats_drop_desc, i); + return idx; } diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 254cc22f5eec..8e571acc9ed8 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -1441,7 +1441,9 @@ struct mlx5_ifc_cmd_hca_cap_bits { u8 reserved_at_120[0xa]; u8 log_max_ra_req_dc[0x6]; - u8 reserved_at_130[0x9]; + u8 reserved_at_130[0x2]; + u8 eth_wqe_too_small[0x1]; + u8 reserved_at_133[0x6]; u8 vnic_env_cq_overrun[0x1]; u8 log_max_ra_res_dc[0x6]; @@ -3469,7 +3471,9 @@ struct mlx5_ifc_vnic_diagnostic_statistics_bits { u8 cq_overrun[0x20]; - u8 reserved_at_220[0xde0]; + u8 eth_wqe_too_small[0x20]; + + u8 reserved_at_220[0xdc0]; }; struct mlx5_ifc_traffic_counter_bits { -- 2.36.1