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| author | David S. Miller <davem@davemloft.net> | 2011-05-04 23:18:54 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-05-04 23:18:54 +0400 |
| commit | 9a1b9496cd2b013f74885218947fa7120d53e74c (patch) | |
| tree | a48d2fdf14a7445a15a7553ef8b7a8732b5bcac1 | |
| parent | dd927a2694ee412b440284dd72dd8e32caada3fc (diff) | |
| download | linux-9a1b9496cd2b013f74885218947fa7120d53e74c.tar.xz | |
ipv4: Pass explicit saddr/daddr args to ipmr_get_route().
This eliminates the need to use rt->rt_{src,dst}.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/mroute.h | 1 | ||||
| -rw-r--r-- | net/ipv4/ipmr.c | 16 | ||||
| -rw-r--r-- | net/ipv4/route.c | 4 |
3 files changed, 12 insertions, 9 deletions
diff --git a/include/linux/mroute.h b/include/linux/mroute.h index b21d567692b2..46caaf44339d 100644 --- a/include/linux/mroute.h +++ b/include/linux/mroute.h @@ -244,6 +244,7 @@ struct mfc_cache { #ifdef __KERNEL__ struct rtmsg; extern int ipmr_get_route(struct net *net, struct sk_buff *skb, + __be32 saddr, __be32 daddr, struct rtmsg *rtm, int nowait); #endif diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 86033b7a05ba..30a7763c400e 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -2041,20 +2041,20 @@ rtattr_failure: return -EMSGSIZE; } -int ipmr_get_route(struct net *net, - struct sk_buff *skb, struct rtmsg *rtm, int nowait) +int ipmr_get_route(struct net *net, struct sk_buff *skb, + __be32 saddr, __be32 daddr, + struct rtmsg *rtm, int nowait) { - int err; - struct mr_table *mrt; struct mfc_cache *cache; - struct rtable *rt = skb_rtable(skb); + struct mr_table *mrt; + int err; mrt = ipmr_get_table(net, RT_TABLE_DEFAULT); if (mrt == NULL) return -ENOENT; rcu_read_lock(); - cache = ipmr_cache_find(mrt, rt->rt_src, rt->rt_dst); + cache = ipmr_cache_find(mrt, saddr, daddr); if (cache == NULL) { struct sk_buff *skb2; @@ -2087,8 +2087,8 @@ int ipmr_get_route(struct net *net, skb_reset_network_header(skb2); iph = ip_hdr(skb2); iph->ihl = sizeof(struct iphdr) >> 2; - iph->saddr = rt->rt_src; - iph->daddr = rt->rt_dst; + iph->saddr = saddr; + iph->daddr = daddr; iph->version = 0; err = ipmr_cache_unresolved(mrt, vif, skb2); read_unlock(&mrt_lock); diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 3bc685454b5b..6a83840b16af 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2857,7 +2857,9 @@ static int rt_fill_info(struct net *net, if (ipv4_is_multicast(dst) && !ipv4_is_local_multicast(dst) && IPV4_DEVCONF_ALL(net, MC_FORWARDING)) { - int err = ipmr_get_route(net, skb, r, nowait); + int err = ipmr_get_route(net, skb, + rt->rt_src, rt->rt_dst, + r, nowait); if (err <= 0) { if (!nowait) { if (err == 0) |