Create udp4_lib_lookup_noref and udp6_lib_lookup_noref. These perfrom
a socket lookup on addresses and ports without taking a reference.
Signed-off-by: Tom Herbert <t...@herbertland.com>
---
include/net/udp.h | 8 ++++++++
net/ipv4/udp.c | 8 ++++++++
net/ipv6/udp.c | 10 ++++++++++
3 files changed, 26 insertions(+)
diff --git a/include/net/udp.h b/include/net/udp.h
index ea53a87..717a972 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -275,6 +275,10 @@ struct sock *__udp4_lib_lookup(struct net *net, __be32
saddr, __be16 sport,
struct udp_table *tbl, struct sk_buff *skb);
struct sock *udp4_lib_lookup_skb(struct sk_buff *skb,
__be16 sport, __be16 dport);
+struct sock *udp4_lib_lookup_noref(struct net *net,
+ __be32 saddr, __be16 sport,
+ __be32 daddr, __be16 dport,
+ int dif);
struct sock *udp6_lib_lookup(struct net *net,
const struct in6_addr *saddr, __be16 sport,
const struct in6_addr *daddr, __be16 dport,
@@ -286,6 +290,10 @@ struct sock *__udp6_lib_lookup(struct net *net,
struct sk_buff *skb);
struct sock *udp6_lib_lookup_skb(struct sk_buff *skb,
__be16 sport, __be16 dport);
+struct sock *udp6_lib_lookup_noref(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
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 7d96dc2..7f84c51 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -595,6 +595,14 @@ struct sock *udp4_lib_lookup(struct net *net, __be32
saddr, __be16 sport,
EXPORT_SYMBOL_GPL(udp4_lib_lookup);
#endif
+struct sock *udp4_lib_lookup_noref(struct net *net, __be32 saddr, __be16 sport,
+ __be32 daddr, __be16 dport, int dif)
+{
+ return __udp4_lib_lookup(net, saddr, sport, daddr, dport,
+ dif, &udp_table, NULL);
+}
+EXPORT_SYMBOL_GPL(udp4_lib_lookup_noref);
+
static inline bool __udp_is_mcast_sock(struct net *net, struct sock *sk,
__be16 loc_port, __be32 loc_addr,
__be16 rmt_port, __be32 rmt_addr,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 9aa7c1c..6e382d9 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -317,6 +317,16 @@ struct sock *udp6_lib_lookup(struct net *net, const struct
in6_addr *saddr, __be
EXPORT_SYMBOL_GPL(udp6_lib_lookup);
#endif
+struct sock *udp6_lib_lookup_noref(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, NULL);
+}
+EXPORT_SYMBOL_GPL(udp6_lib_lookup_noref);
+
/*
* This should be easy, if there is something there we
* return it, otherwise we block.
--
2.9.3
