mlx4: reduce OOM risk on arches with large pages

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commit 3608b13ccc upstream.

Since mlx4 NIC are used on PowerPC with 64K pages, we need to adapt
MLX4_EN_ALLOC_PREFER_ORDER definition.

Otherwise, a fragment sitting in an out of order TCP queue can hold
0.5 Mbytes and it is a serious OOM risk.

Fixes: 51151a16a6 ("mlx4: allow order-0 memory allocations in RX path")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Eric Dumazet 2017-02-18 10:34:18 -08:00 • committed by Ben Hutchings

parent 5f328a5b41

commit 3959fd3508

1 changed files with 2 additions and 1 deletions

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drivers/net/ethernet/mellanox/mlx4/mlx4_en.h

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