From 2b5ead46442d80928cce987ae6acf3fe99968ad8 Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Tue, 13 May 2008 01:16:24 +0900 Subject: [PATCH] ipv6 addrconf: Introduce addrconf_is_prefix_route() helper. This inline function, for readability, returns if the route is a "prefix" route regardless if it was installed by RA or by hand. Signed-off-by: YOSHIFUJI Hideaki --- net/ipv6/addrconf.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 147588f4c7c..9ea4e62741e 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -231,6 +231,12 @@ static inline int addrconf_qdisc_ok(struct net_device *dev) return (dev->qdisc != &noop_qdisc); } +/* Check if a route is valid prefix route */ +static inline int addrconf_is_prefix_route(const struct rt6_info *rt) +{ + return ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0); +} + static void addrconf_del_timer(struct inet6_ifaddr *ifp) { if (del_timer(&ifp->timer)) @@ -777,7 +783,7 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp) ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len); rt = rt6_lookup(net, &prefix, NULL, ifp->idev->dev->ifindex, 1); - if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) { + if (rt && addrconf_is_prefix_route(rt)) { if (onlink == 0) { ip6_del_rt(rt); rt = NULL; @@ -1788,7 +1794,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len) rt = rt6_lookup(dev_net(dev), &pinfo->prefix, NULL, dev->ifindex, 1); - if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) { + if (rt && addrconf_is_prefix_route(rt)) { /* Autoconf prefix route */ if (valid_lft == 0) { ip6_del_rt(rt);