diff options
| author | Jesper Dangaard Brouer <brouer@redhat.com> | 2020-05-14 12:50:18 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-14 21:21:55 -0700 |
| commit | d201ea9ebc519fb34ad9ef1f49ab2ab31f5111ea (patch) | |
| tree | 2e795958ceb00dd9477337388146931ad21e936f /drivers/net/ethernet/mellanox/mlx4 | |
| parent | 08fc1cfd2d250be853d33d6505ae11ff52b83b74 (diff) | |
| download | lwn-d201ea9ebc519fb34ad9ef1f49ab2ab31f5111ea.tar.gz lwn-d201ea9ebc519fb34ad9ef1f49ab2ab31f5111ea.zip | |
mlx4: Add XDP frame size and adjust max XDP MTU
The mlx4 drivers size of memory backing the RX packet is stored in
frag_stride. For XDP mode this will be PAGE_SIZE (normally 4096).
For normal mode frag_stride is 2048.
Also adjust MLX4_EN_MAX_XDP_MTU to take tailroom into account.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Link: https://lore.kernel.org/bpf/158945341893.97035.2688142527052329942.stgit@firesoul
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/en_rx.c | 1 |
2 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 43dcbd8214c6..5bd3cd37d50f 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -51,7 +51,8 @@ #include "en_port.h" #define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \ - XDP_PACKET_HEADROOM)) + XDP_PACKET_HEADROOM - \ + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))) int mlx4_en_setup_tc(struct net_device *dev, u8 up) { diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c index 787139219813..8a10285b0e10 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c @@ -683,6 +683,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud rcu_read_lock(); xdp_prog = rcu_dereference(ring->xdp_prog); xdp.rxq = &ring->xdp_rxq; + xdp.frame_sz = priv->frag_info[0].frag_stride; doorbell_pending = 0; /* We assume a 1:1 mapping between CQEs and Rx descriptors, so Rx |