net/mlx4: Add RSS support for fragmented IP datagrams

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Enable RSS support for fragmented IP packets, when device supports it.
Until now, fragmented IP packets were directed only to the default_qpn.
Since IP fragments (datagram) have no upper protocols (L3 IP packets),
hash is performed on 3-tuple - dst MAC, source IP and dest IP. The HW
makes sure that this holds for the 1st fragment too, so all fragments
go to the same QP.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Ido Shamay 2015-04-02 16:31:06 +03:00 • committed by David S. Miller

parent 9f0d34bc34

commit 802f42a8d9

4 changed files with 16 additions and 0 deletions

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12

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

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1

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

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2

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

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1

include/linux/mlx4/device.h

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