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net: tcp: fix rtable leak in tcp_is_local[6] 

ip_rt_put/ip6_rt_put call is missed after route lookup routine.
So if lookup returns ok, rtable leak will happen.

Change-Id: Ica137043879b4305b70401cf7e8efda24405e3ff
Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com>
This commit is contained in:
liping.zhang 2016-02-17 13:32:20 +08:00 committed by Srinivasarao P
parent 608b569794
commit 493cdfe483
1 changed files with 10 additions and 2 deletions
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12
net/ipv4/tcp.c
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@ -3538,16 +3538,24 @@ void __init tcp_init(void)
static int tcp_is_local(struct net *net, __be32 addr) {
struct rtable *rt;
struct flowi4 fl4 = { .daddr = addr };
int is_local;
rt = ip_route_output_key(net, &fl4);
if (IS_ERR_OR_NULL(rt))
return 0;
return rt->dst.dev && (rt->dst.dev->flags & IFF_LOOPBACK);
is_local = rt->dst.dev && (rt->dst.dev->flags & IFF_LOOPBACK);
ip_rt_put(rt);
return is_local;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
static int tcp_is_local6(struct net *net, struct in6_addr *addr) {
struct rt6_info *rt6 = rt6_lookup(net, addr, addr, 0, 0);
return rt6 && rt6->dst.dev && (rt6->dst.dev->flags & IFF_LOOPBACK);
int is_local;
is_local = rt6 && rt6->dst.dev && (rt6->dst.dev->flags & IFF_LOOPBACK);
ip6_rt_put(rt6);
return is_local;
}
#endif