Commit 740114a8 authored by Tariq Toukan's avatar Tariq Toukan Committed by David S. Miller
Browse files

net/mlx5e: Tx, Enforce L4 inline copy when needed 



When ctrl->tisn field exists, this indicates an operation (HW offload)
on the TCP payload.
For such WQEs, inline the headers up to L4.

This is in preparation for kTLS HW offload support, added in
a downstream patch.

Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 542578c6

drivers/net/ethernet/mellanox/mlx5/core/en/txrx.h

+5 −0
Original line number Diff line number Diff line
@@ -77,6 +77,11 @@ mlx5e_notify_hw(struct mlx5_wq_cyc *wq, u16 pc, void __iomem *uar_map, 
	mlx5_write64((__be32 *)ctrl, uar_map);

}



static inline bool mlx5e_transport_inline_tx_wqe(struct mlx5e_tx_wqe *wqe)

{

	return !!wqe->ctrl.tisn;

}



static inline void mlx5e_cq_arm(struct mlx5e_cq *cq)

{

	struct mlx5_core_cq *mcq;

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

+4 −1
Original line number Diff line number Diff line
@@ -304,9 +304,12 @@ netdev_tx_t mlx5e_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb, 
		num_bytes = skb->len + (skb_shinfo(skb)->gso_segs - 1) * ihs;

		stats->packets += skb_shinfo(skb)->gso_segs;

	} else {

		u8 mode = mlx5e_transport_inline_tx_wqe(wqe) ?

			MLX5_INLINE_MODE_TCP_UDP : sq->min_inline_mode;



		opcode    = MLX5_OPCODE_SEND;

		mss       = 0;

		ihs       = mlx5e_calc_min_inline(sq->min_inline_mode, skb);

		ihs       = mlx5e_calc_min_inline(mode, skb);

		num_bytes = max_t(unsigned int, skb->len, ETH_ZLEN);

		stats->packets++;

	}

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