From: Amir Vadai <amirv@mellanox.com>
Date: Tue, 8 Jul 2014 08:28:12 +0000 (+0300)
Subject: net/mlx4_en: Ignore budget on TX napi polling
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~289^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fbc6daf19745b372c0d909e5d74ab02e42b70e51;p=pandora-kernel.git

net/mlx4_en: Ignore budget on TX napi polling

It is recommended that TX work not count against the quota.
The cost of TX packet liberation is a minute percentage of what it costs to
process an RX frame. Furthermore, that SKB freeing makes memory available for
other paths in the stack.

Give the TX a larger budget and be more aggressive about cleaning up the Tx
descriptors this budget could be changed using ethtool:
$ ethtool -C eth1 tx-frames-irq <budget>

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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