From e7c38157c61649e66f853d7b9f109119b8361448 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 19 Jul 2010 22:01:26 -0700 Subject: [PATCH] ipv6: Make IP6CB(skb)->nhoff 16-bit. Even with jumbograms I cannot see any way in which we would need to records a larger than 65535 valued next-header offset. The maximum extension header length is (256 << 3) == 2048. There are only a handful of extension headers specified which we'd even accept (say 5 or 6), therefore the largest next-header offset we'd ever have to contend with is something less than say 16k. Therefore make it a u16 instead of a u32. Signed-off-by: David S. Miller --- include/linux/ipv6.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 940e21595351..ab9e9e89e407 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -246,7 +246,7 @@ struct inet6_skb_parm { __u16 srcrt; __u16 dst1; __u16 lastopt; - __u32 nhoff; + __u16 nhoff; __u16 flags; #if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) __u16 dsthao; -- GitLab