mac80211: fix erroneous clearing of MESH_PATH_SN_VALID flag
authorJavier Cardona <javier@cozybit.com>
Mon, 8 Aug 2011 23:30:50 +0000 (16:30 -0700)
committerJohn W. Linville <linville@tuxdriver.com>
Wed, 10 Aug 2011 18:07:43 +0000 (14:07 -0400)
commit1b1de7aa9966f44560614c94b3940f685e79a7cb
tree7c1addee0db16c2d97d9c3a74a383ef49ff2f7b5
parent9f3a35df3d9ef2737a28a1ef0a5a7a718efa7163
mac80211: fix erroneous clearing of MESH_PATH_SN_VALID flag

When a PREQ or PREP is received from an intermediate node, it contains
useful information for path selection but it doesn't include the
originator's sequence number.   Therefore, when updating the mesh path
to that intermediate node, we should not set the MESH_PATH_SN_VALID
flag.  BUT, if the flag is set, it should not be unset as we might have
received a valid sequence number for that intermediate node in the past.

This issue was reported, fixed and tested by Ya Bo (游波) and Pedro
Larbig (ASPj).

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
net/mac80211/mesh_hwmp.c