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Commit bcd41303 authored by KOVACS Krisztian's avatar KOVACS Krisztian Committed by David S. Miller
Browse files

udp: Export UDP socket lookup function 



The iptables tproxy code has to be able to do UDP socket hash lookups,
so we have to provide an exported lookup function for this purpose.

Signed-off-by: default avatarKOVACS Krisztian <hidden@sch.bme.hu>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a3116ac5

include/net/udp.h

+4 −0
Original line number Diff line number Diff line
@@ -148,6 +148,10 @@ extern int udp_lib_setsockopt(struct sock *sk, int level, int optname, 
				   char __user *optval, int optlen,

				   int (*push_pending_frames)(struct sock *));



extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,

				    __be32 daddr, __be16 dport,

				    int dif);



DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6);



/* UDP-Lite does not have a standardized MIB yet, so we inherit from UDP */

net/ipv4/udp.c

+7 −0
Original line number Diff line number Diff line
@@ -302,6 +302,13 @@ static struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr, 
	return result;

}



struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,

			     __be32 daddr, __be16 dport, int dif)

{

	return __udp4_lib_lookup(net, saddr, sport, daddr, dport, dif, udp_hash);

}

EXPORT_SYMBOL_GPL(udp4_lib_lookup);



static inline struct sock *udp_v4_mcast_next(struct sock *sk,

					     __be16 loc_port, __be32 loc_addr,

					     __be16 rmt_port, __be32 rmt_addr,