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net/mlx5e: IPsec: Fix crypto offload for non TCP/UDP encapsulated traffic 

IPsec crypto offload always set the ethernet segment checksum flags with
the inner L4 header checksum flag enabled for encapsulated IPsec offloaded
packet regardless of the encapsulated L4 header type, and even if it
doesn't exists in the first place, this breaks non TCP/UDP traffic as
such.

Set the inner L4 checksum flag only when the encapsulated L4 header
protocol is TCP/UDP using software parser swp_inner_l4_offset field as
indication.

Fixes: 5cfb540ef2 ("net/mlx5e: Set IPsec WAs only in IP's non checksum partial case.")
Signed-off-by: Raed Salem <raeds@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Raed Salem 2021-12-02 17:43:50 +02:00 committed by Saeed Mahameed
parent 736dfe4e68
commit 5352859b3b
1 changed files with 6 additions and 3 deletions
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9
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.h
View File

@ -131,14 +131,17 @@ static inline bool
mlx5e_ipsec_txwqe_build_eseg_csum(struct mlx5e_txqsq *sq, struct sk_buff *skb, mlx5e_ipsec_txwqe_build_eseg_csum(struct mlx5e_txqsq *sq, struct sk_buff *skb,
struct mlx5_wqe_eth_seg *eseg) struct mlx5_wqe_eth_seg *eseg)
{ {
struct xfrm_offload *xo = xfrm_offload(skb); u8 inner_ipproto;
if (!mlx5e_ipsec_eseg_meta(eseg)) if (!mlx5e_ipsec_eseg_meta(eseg))
return false; return false;
eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM; eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM;
if (xo->inner_ipproto) { inner_ipproto = xfrm_offload(skb)->inner_ipproto;
eseg->cs_flags |= MLX5_ETH_WQE_L4_INNER_CSUM | MLX5_ETH_WQE_L3_INNER_CSUM; if (inner_ipproto) {
eseg->cs_flags |= MLX5_ETH_WQE_L3_INNER_CSUM;
if (inner_ipproto == IPPROTO_TCP || inner_ipproto == IPPROTO_UDP)
eseg->cs_flags |= MLX5_ETH_WQE_L4_INNER_CSUM;
} else if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { } else if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
eseg->cs_flags |= MLX5_ETH_WQE_L4_CSUM; eseg->cs_flags |= MLX5_ETH_WQE_L4_CSUM;
sq->stats->csum_partial_inner++; sq->stats->csum_partial_inner++;