After commit 4cdeeee9252a ("net: udp: prefer listeners bound to an
address"), UDP-Lite only works when specifying a local address for
the sockets.
This is related to the problem addressed in the commit 719f835853a9
("udp: add rehash on connect()"). Moreover, __udp4_lib_lookup() now
looks for a socket immediately in the secondary hash table.
The issue was found with LTP/network tests (UDP-Lite test-cases).
Signed-off-by: Alexey Kodanev <[email protected]>
---
net/ipv4/udp.c | 2 +-
net/ipv4/udp_impl.h | 1 +
net/ipv4/udplite.c | 1 +
3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 3fb0ed5..26d3a4c 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1918,7 +1918,7 @@ void udp_lib_rehash(struct sock *sk, u16 newhash)
}
EXPORT_SYMBOL(udp_lib_rehash);
-static void udp_v4_rehash(struct sock *sk)
+void udp_v4_rehash(struct sock *sk)
{
u16 new_hash = ipv4_portaddr_hash(sock_net(sk),
inet_sk(sk)->inet_rcv_saddr,
diff --git a/net/ipv4/udp_impl.h b/net/ipv4/udp_impl.h
index 3226726..6b2fa77 100644
--- a/net/ipv4/udp_impl.h
+++ b/net/ipv4/udp_impl.h
@@ -10,6 +10,7 @@
int __udp4_lib_err(struct sk_buff *, u32, struct udp_table *);
int udp_v4_get_port(struct sock *sk, unsigned short snum);
+void udp_v4_rehash(struct sock *sk);
int udp_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, unsigned int optlen);
diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c
index 39c7f17..3c94b8f 100644
--- a/net/ipv4/udplite.c
+++ b/net/ipv4/udplite.c
@@ -53,6 +53,7 @@ struct proto udplite_prot = {
.sendpage = udp_sendpage,
.hash = udp_lib_hash,
.unhash = udp_lib_unhash,
+ .rehash = udp_v4_rehash,
.get_port = udp_v4_get_port,
.memory_allocated = &udp_memory_allocated,
.sysctl_mem = sysctl_udp_mem,
--
1.8.3.1
