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Commit 383677da authored by Or Gerlitz's avatar Or Gerlitz Committed by David S. Miller
Browse files

net/mlx4_core: Mask out host side virtualization features for guests 



When VFs (guests in this context) issue the QUERY_DEV_CAP command, they
need not be told that host side virtualization features such as VST, FSM
(MAC anti-spoofing) and running > 80 VFs are supported by the device.

Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c58942f2

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

+11 −1
Original line number Original line Diff line number Diff line
@@ -973,6 +973,10 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 
	return err;

	return err;

}

}





#define DEV_CAP_EXT_2_FLAG_VLAN_CONTROL (1 << 26)

#define DEV_CAP_EXT_2_FLAG_80_VFS	(1 << 21)

#define DEV_CAP_EXT_2_FLAG_FSM		(1 << 20)



int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,

int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,

			       struct mlx4_vhcr *vhcr,

			       struct mlx4_vhcr *vhcr,

			       struct mlx4_cmd_mailbox *inbox,

			       struct mlx4_cmd_mailbox *inbox,
@@ -982,7 +986,7 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, 
	u64	flags;

	u64	flags;

	int	err = 0;

	int	err = 0;

	u8	field;

	u8	field;

	u32	bmme_flags;

	u32	bmme_flags, field32;

	int	real_port;

	int	real_port;

	int	slave_port;

	int	slave_port;

	int	first_port;

	int	first_port;
@@ -1053,6 +1057,12 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, 
	field &= ~0x80;

	field &= ~0x80;

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

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





	/* turn off host side virt features (VST, FSM, etc) for guests */

	MLX4_GET(field32, outbox->buf, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);

	field32 &= ~(DEV_CAP_EXT_2_FLAG_VLAN_CONTROL | DEV_CAP_EXT_2_FLAG_80_VFS |

		     DEV_CAP_EXT_2_FLAG_FSM);

	MLX4_PUT(outbox->buf, field32, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);



	return 0;

	return 0;

}

}