# \[PATCH net-next 2/4\] 6lowpan: Incorrect type in lowpan\_alloc\_new\_frame() definition : tag is u8 but should be u16

- From: Tony Cheneau \<hidden\>
- Date: 2012-06-11 04:46:33 
- List: netdev
- Page: https://ratatoskr.run/netdev/2012/06/10896852
- Thread: https://ratatoskr.run/netdev/2012/06/10896852/t.md

```text
lowpan_alloc_new_frame() takes u8 tag as an argument. Howerer,
its only caller, lowpan_process_data() passes down a u16. Hence,
the tag value got corrupted.
This prevent 6lowpan fragment reassembly after 256 fragmented packets
have been reassembled by the same recipient.
---
 net/ieee802154/6lowpan.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index a52e795..af4f29b 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -654,7 +654,7 @@ 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;
 
-- 
1.7.3.4
```