net/mlx4_core: Prevent VF from changing port configuration

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Added wrapper to the ACCESS_REG command for handling guest HW
registers access, preventing write operations, but do allow reads.

This will prevent SRIOV guests to change port PTYS configuration,
such as speed/advertised link modes.

Fixes: adbc7ac5c1 ('net/mlx4_core: Introduce ACCESS_REG CMD [...]')
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Saeed Mahameed 2014-11-02 16:26:13 +02:00 • committed by David S. Miller

parent d75b1ade56

commit 6e80669998

3 changed files with 35 additions and 2 deletions

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2

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

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30

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

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5

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

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