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[net-next,v2,6/7] 6lowpan: fix tag variable size

Message ID 1341991368-11800-7-git-send-email-alex.bluesman.smirnov@gmail.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

alex.bluesman.smirnov@gmail.com July 11, 2012, 7:22 a.m. UTC 
Function lowpan_alloc_new_frame() takes u8 tag as an argument. However,
its only caller, lowpan_process_data() passes down a u16. Hence,
the tag value can get corrupted. This prevent 6lowpan fragment reassembly of a
message when the fragment tag value is over 256.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Tony Cheneau <tony.cheneau@amnesiak.org>
---
 net/ieee802154/6lowpan.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
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Patch

diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index ae3f4eb..2e790fb 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -646,7 +646,7 @@  static void lowpan_fragment_timer_expired(unsigned long entry_addr)
 }
 
 static struct lowpan_fragment *
-lowpan_alloc_new_frame(struct sk_buff *skb, u8 iphc0, u8 len, u8 tag)
+lowpan_alloc_new_frame(struct sk_buff *skb, u8 iphc0, u8 len, u16 tag)
 {
 	struct lowpan_fragment *frame;