From: Jeffrey Knockel <jeffk@cs.unm.edu>
Date: Wed, 12 Nov 2014 14:47:20 +0000 (-0700)
Subject: Patch for 3.2.x, 3.4.x IP identifier regression
X-Git-Tag: v3.2.65~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=607d8297d5d78dc84dc8257a60f2c0a5863a07d6;p=pandora-kernel.git

Patch for 3.2.x, 3.4.x IP identifier regression

With commits 73f156a6e8c1 ("inetpeer: get rid of ip_id_count") and
04ca6973f7c1 ("ip: make IP identifiers less predictable"), IP
identifiers are generated from a counter chosen from an array of
counters indexed by the hash of the outgoing packet header's source
address, destination address, and protocol number.  Thus, in
__ip_make_skb(), we must now call ip_select_ident() only after setting
these fields in the IP header to prevent IP identifiers from being
generated from bogus counters.

IP id sequence before fix: 18174, 5789, 5953, 59420, 59637, ...
After fix: 5967, 6185, 6374, 6600, 6795, 6892, 7051, 7288, ...

Signed-off-by: Jeffrey Knockel <jeffk@cs.unm.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Eric Dumazet <edumazet@google.com>
---

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