From de1a0a2d9db8380f2a4647c6d3e3cf436c4c4ea4 Mon Sep 17 00:00:00 2001 From: Gal Pressman Date: Wed, 22 May 2024 22:26:59 +0300 Subject: [PATCH] net/mlx5e: Fix UDP GSO for encapsulated packets [ Upstream commit 83fea49f2711fc90c0d115b0ed04046b45155b65 ] 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: 689adf0d4892 ("net/mlx5e: Add UDP GSO support") Reported-by: Jason Baron Closes: https://lore.kernel.org/netdev/c42961cb-50b9-4a9a-bd43-87fe48d88d29@akamai.com/ Signed-off-by: Gal Pressman Reviewed-by: Dragos Tatulea Reviewed-by: Boris Pismenny Signed-off-by: Tariq Toukan Reviewed-by: Simon Horman Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- .../net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h | 8 +++++++- drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 6 +++++- 2 files changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h index caa34b9c161e..33e32584b07f 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h @@ -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 { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c index 24cbd44dae93..3001a52e1ac2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c @@ -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 {