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| author |  Carolina Jubran <cjubran@nvidia.com>
| 2023-11-23 16:11:20 +0200 |
|---|---|---|
| committer |  Saeed Mahameed <saeedm@nvidia.com>
| 2023-12-13 17:22:17 -0800 |
| commit | bcaf109f794744c14da0e9123b31d1f4571b0a35 (patch) | |
| tree | 9e94008884d87ed72e84e2f5434d84ce7842ed4d /drivers/net/ethernet/mellanox/mlx5/core | |
| parent | net/mlx5e: Decrease num_block_tc when unblock tc offload (diff) | |
| download | linux-bcaf109f794744c14da0e9123b31d1f4571b0a35.tar.gz linux-bcaf109f794744c14da0e9123b31d1f4571b0a35.tar.bz2 linux-bcaf109f794744c14da0e9123b31d1f4571b0a35.zip | |
net/mlx5e: XDP, Drop fragmented packets larger than MTU size
XDP transmits fragmented packets that are larger than MTU size instead of
dropping those packets. The drop check that checks whether a packet is larger
than MTU is comparing MTU size against the linear part length only.
Adjust the drop check to compare MTU size against both linear and non-linear
part lengths to avoid transmitting fragmented packets larger than MTU size.
Fixes: 39a1665d16a2 ("net/mlx5e: Implement sending multi buffer XDP frames")
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c index 7decc81ed33a..13c7ed1bb37e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c @@ -493,6 +493,7 @@ mlx5e_xmit_xdp_frame(struct mlx5e_xdpsq *sq, struct mlx5e_xmit_data *xdptxd, dma_addr_t dma_addr = xdptxd->dma_addr; u32 dma_len = xdptxd->len; u16 ds_cnt, inline_hdr_sz; + unsigned int frags_size; u8 num_wqebbs = 1; int num_frags = 0; bool inline_ok; @@ -503,8 +504,9 @@ mlx5e_xmit_xdp_frame(struct mlx5e_xdpsq *sq, struct mlx5e_xmit_data *xdptxd, inline_ok = sq->min_inline_mode == MLX5_INLINE_MODE_NONE || dma_len >= MLX5E_XDP_MIN_INLINE; + frags_size = xdptxd->has_frags ? xdptxdf->sinfo->xdp_frags_size : 0; - if (unlikely(!inline_ok || sq->hw_mtu < dma_len)) { + if (unlikely(!inline_ok || sq->hw_mtu < dma_len + frags_size)) { stats->err++; return false; } |