net/mlx5e: Prepare non-linear legacy RQ for XDP multi buffer support

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mlx5e_skb_from_cqe_nonlinear creates an xdp_buff first, putting the
first fragment as the linear part, and the rest of fragments as
fragments to struct skb_shared_info in the tailroom. Then it creates an
SKB in place, based on the xdp_buff. The XDP program is not called in
this commit yet.

This commit contains no functional change, except the SKB is built over
the whole frag_stride of the first fragment, instead of the minimal size
required (headroom, data and skb_shared_info).

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

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Maxim Mikityanskiy 2022-01-26 17:43:33 +02:00 • committed by Saeed Mahameed

parent e89600ebee

commit 4e8231f1c2

1 changed files with 61 additions and 14 deletions

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75

drivers/net/ethernet/mellanox/mlx5/core/en_rx.c

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