Commit 7a3198a8 authored Feb 09, 2012 by Jiri Benc Committed by David S. Miller Feb 13, 2012

ipv6: helper function to get tclass



Implement helper inline function to get traffic class from IPv6 header.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 72e60278

include/linux/ipv6.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -233,6 +233,11 @@ static inline struct ipv6hdr ipipv6_hdr(const struct sk_buff skb)
		return (struct ipv6hdr *)skb_transport_header(skb);
		}

		static inline __u8 ipv6_tclass(const struct ipv6hdr *iph)
		{
		return (ntohl((__be32 )iph) >> 20) & 0xff;
		}

		/*
		This structure contains results of exthdrs parsing
		as offsets from skb->nh.

net/ipv6/datagram.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -485,7 +485,7 @@ int datagram_recv_ctl(struct sock sk, struct msghdr msg, struct sk_buff *skb)
		}

		if (np->rxopt.bits.rxtclass) {
		int tclass = (ntohl((__be32 )ipv6_hdr(skb)) >> 20) & 0xff;
		int tclass = ipv6_tclass(ipv6_hdr(skb));
		put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
		}