diff options
| -rw-r--r-- | include/net/udp.h | 4 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 13 | ||||
| -rw-r--r-- | net/ipv6/udp.c | 13 |
3 files changed, 30 insertions, 0 deletions
diff --git a/include/net/udp.h b/include/net/udp.h index a0b0da97164c..3aa0b3ec1fb0 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -269,6 +269,8 @@ struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, __be32 daddr, __be16 dport, int dif, struct udp_table *tbl, struct sk_buff *skb); +struct sock *udp4_lib_lookup_skb(struct sk_buff *skb, + __be16 sport, __be16 dport); struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport, const struct in6_addr *daddr, __be16 dport, @@ -278,6 +280,8 @@ struct sock *__udp6_lib_lookup(struct net *net, const struct in6_addr *daddr, __be16 dport, int dif, struct udp_table *tbl, struct sk_buff *skb); +struct sock *udp6_lib_lookup_skb(struct sk_buff *skb, + __be16 sport, __be16 dport); /* * SNMP statistics for UDP and UDP-Lite diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index d80312ddbb8a..3563788d064f 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -604,6 +604,19 @@ static inline struct sock *__udp4_lib_lookup_skb(struct sk_buff *skb, udptable, skb); } +struct sock *udp4_lib_lookup_skb(struct sk_buff *skb, + __be16 sport, __be16 dport) +{ + const struct iphdr *iph = ip_hdr(skb); + const struct net_device *dev = + skb_dst(skb) ? skb_dst(skb)->dev : skb->dev; + + return __udp4_lib_lookup(dev_net(dev), iph->saddr, sport, + iph->daddr, dport, inet_iif(skb), + &udp_table, skb); +} +EXPORT_SYMBOL_GPL(udp4_lib_lookup_skb); + /* Must be called under rcu_read_lock(). * Does increment socket refcount. */ diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 87bd7aff88b4..a050b70b9101 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -326,6 +326,19 @@ static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb, udptable, skb); } +struct sock *udp6_lib_lookup_skb(struct sk_buff *skb, + __be16 sport, __be16 dport) +{ + const struct ipv6hdr *iph = ipv6_hdr(skb); + const struct net_device *dev = + skb_dst(skb) ? skb_dst(skb)->dev : skb->dev; + + return __udp6_lib_lookup(dev_net(dev), &iph->saddr, sport, + &iph->daddr, dport, inet6_iif(skb), + &udp_table, skb); +} +EXPORT_SYMBOL_GPL(udp6_lib_lookup_skb); + /* Must be called under rcu_read_lock(). * Does increment socket refcount. */ |