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tproxy: added udp6_lib_lookup function

Just like with IPv4, we need access to the UDP hash table to look up local
sockets, but instead of exporting the global udp_table, export a lookup
function.

Signed-off-by: Balazs Scheidler <bazsi@balabit.hu>
Signed-off-by: KOVACS Krisztian <hidden@balabit.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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commit 52a621833151747147629bdf21424833e02825b0 1 parent 0b47970
@bazsi bazsi authored committed
Showing with 11 additions and 0 deletions.
  1. +3 −0  include/net/udp.h
  2. +8 −0 net/ipv6/udp.c
View
3  include/net/udp.h
@@ -185,6 +185,9 @@ extern int udp_lib_setsockopt(struct sock *sk, int level, int optname,
extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
__be32 daddr, __be16 dport,
int dif);
+extern struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport,
+ const struct in6_addr *daddr, __be16 dport,
+ int dif);
/*
* SNMP statistics for UDP and UDP-Lite
View
8 net/ipv6/udp.c
@@ -320,6 +320,14 @@ static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb,
udptable);
}
+struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport,
+ const struct in6_addr *daddr, __be16 dport, int dif)
+{
+ return __udp6_lib_lookup(net, saddr, sport, daddr, dport, dif, &udp_table);
+}
+EXPORT_SYMBOL_GPL(udp6_lib_lookup);
+
+
/*
* This should be easy, if there is something there we
* return it, otherwise we block.
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