From: Anjali Singhai <anjali.singhai@intel.com>
Date: Sat, 21 Feb 2015 06:42:35 +0000 (+0000)
Subject: i40e: Fix TSO with more than 8 frags per segment issue
X-Git-Tag: omap-for-v4.1/wl12xx-dt~68^2~31^2~9
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71da61976ec18fb57b3ba9a1dd846b747cc7c884;p=pandora-kernel.git

i40e: Fix TSO with more than 8 frags per segment issue

The hardware has some limitations the driver needs to adhere to,
that we found in extended testing.
  1) no more than 8 descriptors per packet on the wire
  2) no header can span more than 3 descriptors

If one of these events occurs, the hardware will generate an internal
error and freeze the Tx queue.

This patch linearizes the skb to avoid these situations.

Change-ID: I37dab7d3966e14895a9663ec4d0aaa8eb0d9e115
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

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