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[173.184.37.132]) by smtp.gmail.com with ESMTPSA id j15sm977551qth.3.2021.09.29.19.18.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Sep 2021 19:18:01 -0700 (PDT) From: Joshua Roys To: netdev@vger.kernel.org Cc: Joshua Roys , ast@kernel.org, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, daniel@iogearbox.net, kuba@kernel.org, bpf@vger.kernel.org, tariqt@nvidia.com, linux-rdma@vger.kernel.org Subject: [PATCH net-next v2] net/mlx4_en: Add XDP_REDIRECT statistics Date: Wed, 29 Sep 2021 22:17:18 -0400 Message-Id: <20210930021718.245395-1-roysjosh@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210928132602.1488-1-roysjosh@gmail.com> References: <20210928132602.1488-1-roysjosh@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Add counters for XDP REDIRECT success and failure. This brings the redirect path in line with metrics gathered via the other XDP paths. Signed-off-by: Joshua Roys --- drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 8 ++++++++ drivers/net/ethernet/mellanox/mlx4/en_port.c | 4 ++++ drivers/net/ethernet/mellanox/mlx4/en_rx.c | 4 +++- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 2 ++ drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h | 4 +++- 5 files changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c index ef518b1040f7..66c8ae29bc7a 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c @@ -197,6 +197,8 @@ static const char main_strings[][ETH_GSTRING_LEN] = { /* xdp statistics */ "rx_xdp_drop", + "rx_xdp_redirect", + "rx_xdp_redirect_fail", "rx_xdp_tx", "rx_xdp_tx_full", @@ -428,6 +430,8 @@ static void mlx4_en_get_ethtool_stats(struct net_device *dev, data[index++] = priv->rx_ring[i]->bytes; data[index++] = priv->rx_ring[i]->dropped; data[index++] = priv->rx_ring[i]->xdp_drop; + data[index++] = priv->rx_ring[i]->xdp_redirect; + data[index++] = priv->rx_ring[i]->xdp_redirect_fail; data[index++] = priv->rx_ring[i]->xdp_tx; data[index++] = priv->rx_ring[i]->xdp_tx_full; } @@ -519,6 +523,10 @@ static void mlx4_en_get_strings(struct net_device *dev, "rx%d_dropped", i); sprintf(data + (index++) * ETH_GSTRING_LEN, "rx%d_xdp_drop", i); + sprintf(data + (index++) * ETH_GSTRING_LEN, + "rx%d_xdp_redirect", i); + sprintf(data + (index++) * ETH_GSTRING_LEN, + "rx%d_xdp_redirect_fail", i); sprintf(data + (index++) * ETH_GSTRING_LEN, "rx%d_xdp_tx", i); sprintf(data + (index++) * ETH_GSTRING_LEN, diff --git a/drivers/net/ethernet/mellanox/mlx4/en_port.c b/drivers/net/ethernet/mellanox/mlx4/en_port.c index 0158b88bea5b..f25794a92241 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_port.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_port.c @@ -244,6 +244,8 @@ int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset) priv->port_stats.rx_chksum_complete = 0; priv->port_stats.rx_alloc_pages = 0; priv->xdp_stats.rx_xdp_drop = 0; + priv->xdp_stats.rx_xdp_redirect = 0; + priv->xdp_stats.rx_xdp_redirect_full = 0; priv->xdp_stats.rx_xdp_tx = 0; priv->xdp_stats.rx_xdp_tx_full = 0; for (i = 0; i < priv->rx_ring_num; i++) { @@ -255,6 +257,8 @@ int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset) priv->port_stats.rx_chksum_complete += READ_ONCE(ring->csum_complete); priv->port_stats.rx_alloc_pages += READ_ONCE(ring->rx_alloc_pages); priv->xdp_stats.rx_xdp_drop += READ_ONCE(ring->xdp_drop); + priv->xdp_stats.rx_xdp_redirect += READ_ONCE(ring->xdp_redirect); + priv->xdp_stats.rx_xdp_redirect_fail += READ_ONCE(ring->xdp_redirect_fail); priv->xdp_stats.rx_xdp_tx += READ_ONCE(ring->xdp_tx); priv->xdp_stats.rx_xdp_tx_full += READ_ONCE(ring->xdp_tx_full); } diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 557d7daac2d3..650e6a1844ae 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -793,11 +793,13 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud case XDP_PASS: break; case XDP_REDIRECT: - if (xdp_do_redirect(dev, &xdp, xdp_prog) >= 0) { + if (likely(!xdp_do_redirect(dev, &xdp, xdp_prog))) { + ring->xdp_redirect++; xdp_redir_flush = true; frags[0].page = NULL; goto next; } + ring->xdp_redirect_fail++; trace_xdp_exception(dev, xdp_prog, act); goto xdp_drop_no_cnt; case XDP_TX: diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h index f3d1a20201ef..f6c90e97b4cd 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h @@ -340,6 +340,8 @@ struct mlx4_en_rx_ring { unsigned long csum_complete; unsigned long rx_alloc_pages; unsigned long xdp_drop; + unsigned long xdp_redirect; + unsigned long xdp_redirect_fail; unsigned long xdp_tx; unsigned long xdp_tx_full; unsigned long dropped; diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h index 7b51ae8cf759..e9cd4bb6f83d 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h @@ -42,9 +42,11 @@ struct mlx4_en_port_stats { struct mlx4_en_xdp_stats { unsigned long rx_xdp_drop; + unsigned long rx_xdp_redirect; + unsigned long rx_xdp_redirect_fail; unsigned long rx_xdp_tx; unsigned long rx_xdp_tx_full; -#define NUM_XDP_STATS 3 +#define NUM_XDP_STATS 5 }; struct mlx4_en_phy_stats {