From: Maxim Mikityanskiy <maximmi@nvidia.com>
Date: Wed, 9 Feb 2022 13:32:35 +0000 (+0200)
Subject: net/mlx5e: Use page-sized fragments with XDP multi buffer
X-Git-Tag: v6.1-rc5~1746^2~31^2~12
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d51f4a4cca6f629927b1871af0c6f5ce7a9022e9;p=platform%2Fkernel%2Flinux-starfive.git

net/mlx5e: Use page-sized fragments with XDP multi buffer

The implementation of XDP in mlx5e assumes that the frame size is equal
to the page size. Force this limitation in the non-linear mode for XDP
multi buffer.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
index 822fbb9..9646867 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
@@ -444,7 +444,7 @@ static int mlx5e_build_rq_frags_info(struct mlx5_core_dev *mdev,
 
 	max_mtu = mlx5e_max_nonlinear_mtu(first_frag_size_max, frag_size_max,
 					  params->xdp_prog);
-	if (byte_count > max_mtu) {
+	if (byte_count > max_mtu || params->xdp_prog) {
 		frag_size_max = PAGE_SIZE;
 		first_frag_size_max = SKB_WITH_OVERHEAD(frag_size_max - headroom);