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authorYOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org>2013-01-13 05:01:51 +0000
committerDavid S. Miller <davem@davemloft.net>2013-01-13 20:17:13 -0500
commit6502ca527f8ed2c3bb327d9db8e7e6e7dcbef511 (patch)
treeac76c5941e5ec45ab6ee8b0aa26db67eb67930f6 /net
parent3e4e4c1f2da66b29ee9379ca29f8dd620c2b5a1f (diff)
ipv6: Introduce ip6_flowinfo() to extract flowinfo (tclass + flowlabel).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/datagram.c9
-rw-r--r--net/ipv6/route.c6
2 files changed, 8 insertions, 7 deletions
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 56b692bb94a..7f65df41c39 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -360,7 +360,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len)
struct ipv6hdr, daddr);
sin->sin6_addr = ip6h->daddr;
if (np->sndflow)
- sin->sin6_flowinfo = *(__be32 *)ip6h & IPV6_FLOWINFO_MASK;
+ sin->sin6_flowinfo = ip6_flowinfo(ip6h);
if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
sin->sin6_scope_id = IP6CB(skb)->iif;
} else {
@@ -491,9 +491,10 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
}
- if (np->rxopt.bits.rxflow && (*(__be32 *)nh & IPV6_FLOWINFO_MASK)) {
- __be32 flowinfo = *(__be32 *)nh & IPV6_FLOWINFO_MASK;
- put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
+ if (np->rxopt.bits.rxflow) {
+ __be32 flowinfo = ip6_flowinfo((struct ipv6hdr *)nh);
+ if (flowinfo)
+ put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
}
/* HbH is allowed only once */
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 621b68ecf16..6238eb5037a 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -994,7 +994,7 @@ void ip6_route_input(struct sk_buff *skb)
.flowi6_iif = skb->dev->ifindex,
.daddr = iph->daddr,
.saddr = iph->saddr,
- .flowlabel = (* (__be32 *) iph) & IPV6_FLOWINFO_MASK,
+ .flowlabel = ip6_flowinfo(iph),
.flowi6_mark = skb->mark,
.flowi6_proto = iph->nexthdr,
};
@@ -1159,7 +1159,7 @@ void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu,
fl6.flowi6_flags = 0;
fl6.daddr = iph->daddr;
fl6.saddr = iph->saddr;
- fl6.flowlabel = (*(__be32 *) iph) & IPV6_FLOWINFO_MASK;
+ fl6.flowlabel = ip6_flowinfo(iph);
dst = ip6_route_output(net, NULL, &fl6);
if (!dst->error)
@@ -1187,7 +1187,7 @@ void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark)
fl6.flowi6_flags = 0;
fl6.daddr = iph->daddr;
fl6.saddr = iph->saddr;
- fl6.flowlabel = (*(__be32 *) iph) & IPV6_FLOWINFO_MASK;
+ fl6.flowlabel = ip6_flowinfo(iph);
dst = ip6_route_output(net, NULL, &fl6);
if (!dst->error)