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| author |   David S. Miller <davem@davemloft.net> | 2011-03-02 14:31:35 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-03-02 14:31:35 -0800 |
| commit | b23dd4fe42b455af5c6e20966b7d6959fa8352ea (patch) | |
| tree | bf97323eae9a8d084170e573ff2c0c40bc72c3cd /net/ipv4/igmp.c | |
| parent | xfrm: Return dst directly from xfrm_lookup() (diff) | |
| download | linux-dev-b23dd4fe42b455af5c6e20966b7d6959fa8352ea.tar.xz linux-dev-b23dd4fe42b455af5c6e20966b7d6959fa8352ea.zip | |
ipv4: Make output route lookup return rtable directly.
Instead of on the stack.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/igmp.c')
| -rw-r--r-- | net/ipv4/igmp.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index e0e77e297de3..44ba9068b72f 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -325,7 +325,8 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) struct flowi fl = { .oif = dev->ifindex, .fl4_dst = IGMPV3_ALL_MCR, .proto = IPPROTO_IGMP }; - if (ip_route_output_key(net, &rt, &fl)) { + rt = ip_route_output_key(net, &fl); + if (IS_ERR(rt)) { kfree_skb(skb); return NULL; } @@ -670,7 +671,8 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc, struct flowi fl = { .oif = dev->ifindex, .fl4_dst = dst, .proto = IPPROTO_IGMP }; - if (ip_route_output_key(net, &rt, &fl)) + rt = ip_route_output_key(net, &fl); + if (IS_ERR(rt)) return -1; } if (rt->rt_src == 0) { @@ -1440,7 +1442,6 @@ void ip_mc_destroy_dev(struct in_device *in_dev) static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr) { struct flowi fl = { .fl4_dst = imr->imr_multiaddr.s_addr }; - struct rtable *rt; struct net_device *dev = NULL; struct in_device *idev = NULL; @@ -1454,9 +1455,12 @@ static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr) return NULL; } - if (!dev && !ip_route_output_key(net, &rt, &fl)) { - dev = rt->dst.dev; - ip_rt_put(rt); + if (!dev) { + struct rtable *rt = ip_route_output_key(net, &fl); + if (!IS_ERR(rt)) { + dev = rt->dst.dev; + ip_rt_put(rt); + } } if (dev) { imr->imr_ifindex = dev->ifindex; |