From: Dhananjay Phadke <dhananjay@netxen.com>
Date: Tue, 22 Jul 2008 02:44:08 +0000 (-0700)
Subject: netxen: cut-through rx changes
X-Git-Tag: v2.6.27-rc1~860^2~3^2~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d9e651bc06690c5a5326e8d019fa7668409bc819;p=pandora-kernel.git

netxen: cut-through rx changes

NX3031 supports cut-through operation where ingress packets are
directly dma'ed into host buffers to reduce latency.

This requires larger dma buffers (2kb) and different alignemnt.

The buffer posting logic is changed a bit. The free rx buffers
are maintained in linked list, since the received reference
handles can be out of order. However rx descriptors are still
posted sequentially, indexed by producer.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

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