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net/mlx5e: Fix UDP GSO for encapsulated packets

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[ Upstream commit 83fea49f27 ]

When the skb is encapsulated, adjust the inner UDP header instead of the
outer one, and account for UDP header (instead of TCP) in the inline
header size calculation.

Fixes: 689adf0d48 ("net/mlx5e: Add UDP GSO support")
Reported-by: Jason Baron <jbaron@akamai.com>
Closes: https://lore.kernel.org/netdev/c42961cb-50b9-4a9a-bd43-87fe48d88d29@akamai.com/
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Boris Pismenny <borisp@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Gal Pressman 2024-05-22 22:26:59 +03:00 committed by Greg Kroah-Hartman
parent 634e0e9f82
commit e481b93803
2 changed files with 12 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h
View file

@ -102,8 +102,14 @@ static inline void
mlx5e_udp_gso_handle_tx_skb(struct sk_buff *skb)
{
int payload_len = skb_shinfo(skb)->gso_size + sizeof(struct udphdr);
struct udphdr *udphdr;
udp_hdr(skb)->len = htons(payload_len);
if (skb->encapsulation)
udphdr = (struct udphdr *)skb_inner_transport_header(skb);
else
udphdr = udp_hdr(skb);
udphdr->len = htons(payload_len);
}
struct mlx5e_accel_tx_state {

6
drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
View file

@ -153,7 +153,11 @@ mlx5e_tx_get_gso_ihs(struct mlx5e_txqsq *sq, struct sk_buff *skb, int *hopbyhop)
*hopbyhop = 0;
if (skb->encapsulation) {
ihs = skb_inner_tcp_all_headers(skb);
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
ihs = skb_inner_transport_offset(skb) +
sizeof(struct udphdr);
else
ihs = skb_inner_tcp_all_headers(skb);
stats->tso_inner_packets++;
stats->tso_inner_bytes += skb->len - ihs;
} else {