Misalignment, MIPS, and ip_hdr(skb)->version

[David Miller]

From: Dave Taht <dave.taht at gmail.com>
Date: Wed, 7 Dec 2016 10:47:16 -0800

> https://git.lede-project.org/?p=openwrt/source.git;a=blob;f=target/linux/ar71xx/patches-4.4/910-unaligned_access_hacks.patch;h=b4b749e4b9c02a74a9f712a2740d63e554de5c64;hb=ee53a240ac902dc83209008a2671e7fdcf55957a

It's so much better to analyze properly where the misalignment comes from
and address it at the source, as we have for various cases that trip up
Sparc too.

Marking structures "packed" is going to kill performance and is not
the answer.