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Commit 78500b8c authored by Muhammad Mahajna's avatar Muhammad Mahajna Committed by David S. Miller
Browse files

net/mlx4_en: Add RX-ALL support 



Enabled when the device supports KEEP FCS and IGNORE FCS.

When the flag is set, pass all received frames up the stack,
even ones with invalid FCS, controlled by ethtool.

Signed-off-by: default avatarMuhammad Mahajna <muhammadm@mellanox.com>
Signed-off-by: default avatarIdo Shamay <idos@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f0df3503

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

+14 −0
Original line number Diff line number Diff line
@@ -2204,6 +2204,17 @@ static int mlx4_en_set_features(struct net_device *netdev, 
		reset = true;

	}



	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {

		u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;



		en_info(priv, "Turn %s RX-ALL\n",

			ignore_fcs_value ? "ON" : "OFF");

		ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,

					      priv->port, ignore_fcs_value);

		if (ret)

			return ret;

	}



	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {

		en_info(priv, "Turn %s RX vlan strip offload\n",

			(features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
@@ -2914,6 +2925,9 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, 
	if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)

		dev->hw_features |= NETIF_F_RXFCS;



	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)

		dev->hw_features |= NETIF_F_RXALL;



	if (mdev->dev->caps.steering_mode ==

	    MLX4_STEERING_MODE_DEVICE_MANAGED &&

	    mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)

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

+8 −0
Original line number Diff line number Diff line
@@ -151,6 +151,7 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags) 
		[25] = "Granular QoS per VF support",

		[26] = "Port ETS Scheduler support",

		[27] = "Port beacon support",

		[28] = "RX-ALL support",

	};

	int i;
@@ -893,6 +894,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 
	MLX4_GET(field, outbox, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);

	if (field & 0x20)

		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_CONFIG_DEV;

	if (field & (1 << 2))

		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_IGNORE_FCS;

	MLX4_GET(dev_cap->reserved_lkey, outbox,

		 QUERY_DEV_CAP_RSVD_LKEY_OFFSET);

	MLX4_GET(field32, outbox, QUERY_DEV_CAP_ETH_BACKPL_OFFSET);
@@ -1220,6 +1223,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, 
	field &= 0xef;

	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);



	/* turn off ignore FCS feature for guests */

	MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);

	field &= 0xfb;

	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);



	return 0;

}

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

+21 −0
Original line number Diff line number Diff line
@@ -297,6 +297,25 @@ static int mlx4_dev_port(struct mlx4_dev *dev, int port, 
	return err;

}



static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev)

{

	if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS))

		return;



	if (mlx4_is_mfunc(dev)) {

		mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS");

		dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;

		return;

	}



	if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) {

		mlx4_dbg(dev,

			 "Keep FCS is not supported - Disabling Ignore FCS");

		dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;

		return;

	}

}



#define MLX4_A0_STEERING_TABLE_SIZE	256

static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)

{
@@ -540,6 +559,8 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 
		dev->caps.alloc_res_qp_mask = 0;

	}



	mlx4_enable_ignore_fcs(dev);



	return 0;

}

drivers/net/ethernet/mellanox/mlx4/mlx4.h

+4 −2
Original line number Diff line number Diff line
@@ -763,9 +763,11 @@ enum { 




struct mlx4_set_port_general_context {

	u8 reserved[3];

	u16 reserved1;

	u8 v_ignore_fcs;

	u8 flags;

	u16 reserved2;

	u8 ignore_fcs;

	u8 reserved2;

	__be16 mtu;

	u8 pptx;

	u8 pfctx;

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

+34 −0
Original line number Diff line number Diff line
@@ -45,6 +45,14 @@ 
#define MLX4_VLAN_VALID		(1u << 31)

#define MLX4_VLAN_MASK		0xfff



#define MLX4_STATS_TRAFFIC_COUNTERS_MASK	0xfULL

#define MLX4_STATS_TRAFFIC_DROPS_MASK		0xc0ULL

#define MLX4_STATS_ERROR_COUNTERS_MASK		0x1ffc30ULL

#define MLX4_STATS_PORT_COUNTERS_MASK		0x1fe00000ULL



#define MLX4_FLAG_V_IGNORE_FCS_MASK		0x2

#define MLX4_IGNORE_FCS_MASK			0x1



void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)

{

	int i;
@@ -1027,6 +1035,32 @@ int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn, 
}

EXPORT_SYMBOL(mlx4_SET_PORT_qpn_calc);



int mlx4_SET_PORT_fcs_check(struct mlx4_dev *dev, u8 port, u8 ignore_fcs_value)

{

	struct mlx4_cmd_mailbox *mailbox;

	struct mlx4_set_port_general_context *context;

	u32 in_mod;

	int err;



	mailbox = mlx4_alloc_cmd_mailbox(dev);

	if (IS_ERR(mailbox))

		return PTR_ERR(mailbox);

	context = mailbox->buf;

	context->v_ignore_fcs |= MLX4_FLAG_V_IGNORE_FCS_MASK;

	if (ignore_fcs_value)

		context->ignore_fcs |= MLX4_IGNORE_FCS_MASK;

	else

		context->ignore_fcs &= ~MLX4_IGNORE_FCS_MASK;



	in_mod = MLX4_SET_PORT_GENERAL << 8 | port;

	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,

		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);



	mlx4_free_cmd_mailbox(dev, mailbox);

	return err;

}

EXPORT_SYMBOL(mlx4_SET_PORT_fcs_check);



enum {

	VXLAN_ENABLE_MODIFY	= 1 << 7,

	VXLAN_STEERING_MODIFY	= 1 << 6,