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authorAlexey Kodanev <alexey.kodanev@oracle.com>2019-01-16 19:17:44 +0300
committerDavid S. Miller <davem@davemloft.net>2019-01-18 02:01:08 +0300
commit8f6b5392856a4b74224e257f3e0874a163b04603 (patch)
treed30727208a8b57b0ff6fe8c4281ebc47bce73647 /net
parent2cddd20147826aef283115abb00012d4dafe3cdb (diff)
downloadlinux-8f6b5392856a4b74224e257f3e0874a163b04603.tar.xz
udp: add missing rehash callback to udplite
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). Fixes: 4cdeeee9252a ("net: udp: prefer listeners bound to an address") Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/udp.c2
-rw-r--r--net/ipv4/udp_impl.h1
-rw-r--r--net/ipv4/udplite.c1
3 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 3d2a81bdc2ab..5c3cd5d84a6f 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1926,7 +1926,7 @@ 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 322672655419..6b2fa77eeb1c 100644
--- a/net/ipv4/udp_impl.h
+++ b/net/ipv4/udp_impl.h
@@ -10,6 +10,7 @@ int __udp4_lib_rcv(struct sk_buff *, struct udp_table *, int);
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 39c7f17d916f..3c94b8f0ff27 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,