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Commit f3a9d1f2 authored by Yevgeny Petrilin's avatar Yevgeny Petrilin Committed by David S. Miller
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mlx4_en: Controlling FCS header removal 



Canceling FCS removal where FW allows for better alignment
of incoming data.

Signed-off-by: default avatarYevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e72ebf5a

drivers/net/ethernet/mellanox/mlx4/en_rx.c

+4 −0
Original line number Diff line number Diff line
@@ -806,6 +806,10 @@ static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv, int qpn, 
				qpn, ring->cqn, context);

	context->db_rec_addr = cpu_to_be64(ring->wqres.db.dma);



	/* Cancel FCS removal if FW allows */

	if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)

		context->param3 |= cpu_to_be32(1 << 29);



	err = mlx4_qp_to_ready(mdev->dev, &ring->wqres.mtt, context, qp, state);

	if (err) {

		mlx4_qp_remove(mdev->dev, qp);

drivers/net/ethernet/mellanox/mlx4/fw.c

+1 −0
Original line number Diff line number Diff line
@@ -101,6 +101,7 @@ static void dump_dev_cap_flags(struct mlx4_dev *dev, u64 flags) 
		[25] = "Router support",

		[30] = "IBoE support",

		[32] = "Unicast loopback support",

		[34] = "FCS header control",

		[38] = "Wake On LAN support",

		[40] = "UDP RSS support",

		[41] = "Unicast VEP steering support",

include/linux/mlx4/device.h

+1 −0
Original line number Diff line number Diff line
@@ -75,6 +75,7 @@ enum { 
	MLX4_DEV_CAP_FLAG_UD_MCAST	= 1LL << 21,

	MLX4_DEV_CAP_FLAG_IBOE		= 1LL << 30,

	MLX4_DEV_CAP_FLAG_UC_LOOPBACK	= 1LL << 32,

	MLX4_DEV_CAP_FLAG_FCS_KEEP	= 1LL << 34,

	MLX4_DEV_CAP_FLAG_WOL		= 1LL << 38,

	MLX4_DEV_CAP_FLAG_UDP_RSS	= 1LL << 40,

	MLX4_DEV_CAP_FLAG_VEP_UC_STEER	= 1LL << 41,