27 May
2010
27 May
'10
3:07 p.m.
On Thu, May 27, 2010 at 04:23:50PM +0200, Andreas Langer wrote:
Hello, i looked into the problem of fragmenting packets on layer2 to solve the mtu issue. I found a unforeseen problem : oversized packets will be dropped by the bridge module ( if bat0 is in a bridge ). I think the reason can be found here net/bridge/br_forward.c on line 44
43 /* drop mtu oversized packets except gso */ 44 if (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb)) 45 kfree_skb(skb);
I don't quite understand the problem. If you have implemented fragmentation, you will naturally increase the MTU on bat0 so that it is the standard for Ethernet. So this statement will not trigger.
Andrew