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author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2013-07-11 12:43:42 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2013-07-11 11:51:10 -0700 |
commit | afc154e978de1eb11c555bc8bcec1552f75ebc43 (patch) | |
tree | 9398696864b0d770b0c108eda89dc4cf1bbf4482 /drivers/net/phy | |
parent | 1b4fc0e249d61916b8a525b0e7b3c028232457c9 (diff) | |
download | linux-afc154e978de1eb11c555bc8bcec1552f75ebc43.tar.bz2 |
ipv6: fix route selection if kernel is not compiled with CONFIG_IPV6_ROUTER_PREF
This is a follow-up patch to 3630d40067a21d4dfbadc6002bb469ce26ac5d52
("ipv6: rt6_check_neigh should successfully verify neigh if no NUD
information are available").
Since the removal of rt->n in rt6_info we can end up with a dst ==
NULL in rt6_check_neigh. In case the kernel is not compiled with
CONFIG_IPV6_ROUTER_PREF we should also select a route with unkown
NUD state but we must not avoid doing round robin selection on routes
with the same target. So introduce and pass down a boolean ``do_rr'' to
indicate when we should update rt->rr_ptr. As soon as no route is valid
we do backtracking and do a lookup on a higher level in the fib trie.
v2:
a) Improved rt6_check_neigh logic (no need to create neighbour there)
and documented return values.
v3:
a) Introduce enum rt6_nud_state to get rid of the magic numbers
(thanks to David Miller).
b) Update and shorten commit message a bit to actualy reflect
the source.
Reported-by: Pierre Emeriaud <petrus.lt@gmail.com>
Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
0 files changed, 0 insertions, 0 deletions