diff options
| author | YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> | 2013-01-13 05:01:51 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-13 20:17:13 -0500 |
| commit | 6502ca527f8ed2c3bb327d9db8e7e6e7dcbef511 (patch) | |
| tree | ac76c5941e5ec45ab6ee8b0aa26db67eb67930f6 | |
| parent | 3e4e4c1f2da66b29ee9379ca29f8dd620c2b5a1f (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>
| -rw-r--r-- | include/net/ipv6.h | 5 | ||||
| -rw-r--r-- | net/ipv6/datagram.c | 9 | ||||
| -rw-r--r-- | net/ipv6/route.c | 6 |
3 files changed, 13 insertions, 7 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index fcbc6464b01..ed672080c69 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -555,6 +555,11 @@ static inline void ip6_flow_hdr(struct ipv6hdr *hdr, unsigned int tclass, *(__be32 *)hdr = ntohl(0x60000000 | (tclass << 20)) | flowlabel; } +static inline __be32 ip6_flowinfo(const struct ipv6hdr *hdr) +{ + return *(__be32 *)hdr & IPV6_FLOWINFO_MASK; +} + /* * Prototypes exported by ipv6 */ 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) |