From: Amir Vadai <amirv@mellanox.com>
Date: Thu, 7 Mar 2013 03:46:57 +0000 (+0000)
Subject: net/mlx4_en: Disable RFS when running in SRIOV mode
X-Git-Tag: v3.9-rc3~36^2~24^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a229e488ac3f904d06c20d8d3f47831db3c7a15a;p=pandora-kernel.git

net/mlx4_en: Disable RFS when running in SRIOV mode

Commit 37706996 "mlx4_en: fix allocation of CPU affinity reverse-map" fixed
a bug when mlx4_dev->caps.comp_pool is larger from the device rx rings, but
introduced a regression.

When the mlx4_core is activating its "legacy mode" (e.g when running in SRIOV
mode) w.r.t to EQs/IRQs usage, comp_pool becomes zero and we're crashing on
divide by zero alloc_cpu_rmap.

Fix that by enabling RFS only when running in non-legacy mode.

Reported-by: Yan Burman <yanb@mellanox.com>
Cc: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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