[IPV4] UDP: Fix endianness bugs in hashing changes.
I accidently applied an earlier version of Eric Dumazet's patch, from
March 21st. His version from March 30th didn't have these bugs, so
this just interdiffs to the correct patch.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 1449707..db313d9 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -270,10 +270,10 @@
struct sock *sk, *result = NULL;
struct hlist_node *node;
unsigned int hash, hashwild;
- int score, best = -1;
+ int score, best = -1, hport = ntohs(dport);
- hash = hash_port_and_addr(ntohs(dport), daddr);
- hashwild = hash_port_and_addr(ntohs(dport), 0);
+ hash = hash_port_and_addr(hport, daddr);
+ hashwild = hash_port_and_addr(hport, 0);
read_lock(&udp_hash_lock);
@@ -283,7 +283,7 @@
struct inet_sock *inet = inet_sk(sk);
if (sk->sk_hash != hash || ipv6_only_sock(sk) ||
- inet->num != dport)
+ inet->num != hport)
continue;
score = (sk->sk_family == PF_INET ? 1 : 0);
@@ -327,11 +327,10 @@
return result;
}
-static inline struct sock *udp_v4_mcast_next(
- struct sock *sk,
- unsigned int hnum, __be16 loc_port, __be32 loc_addr,
- __be16 rmt_port, __be32 rmt_addr,
- int dif)
+static inline struct sock *udp_v4_mcast_next(struct sock *sk, unsigned int hnum,
+ int hport, __be32 loc_addr,
+ __be16 rmt_port, __be32 rmt_addr,
+ int dif)
{
struct hlist_node *node;
struct sock *s = sk;
@@ -340,7 +339,7 @@
struct inet_sock *inet = inet_sk(s);
if (s->sk_hash != hnum ||
- inet->num != loc_port ||
+ inet->num != hport ||
(inet->daddr && inet->daddr != rmt_addr) ||
(inet->dport != rmt_port && inet->dport) ||
(inet->rcv_saddr && inet->rcv_saddr != loc_addr) ||
@@ -1173,8 +1172,9 @@
{
struct sock *sk, *skw, *sknext;
int dif;
- unsigned int hash = hash_port_and_addr(ntohs(uh->dest), daddr);
- unsigned int hashwild = hash_port_and_addr(ntohs(uh->dest), 0);
+ int hport = ntohs(uh->dest);
+ unsigned int hash = hash_port_and_addr(hport, daddr);
+ unsigned int hashwild = hash_port_and_addr(hport, 0);
dif = skb->dev->ifindex;
@@ -1183,20 +1183,20 @@
sk = sk_head(&udptable[hash & (UDP_HTABLE_SIZE - 1)]);
skw = sk_head(&udptable[hashwild & (UDP_HTABLE_SIZE - 1)]);
- sk = udp_v4_mcast_next(sk, hash, uh->dest, daddr, uh->source, saddr, dif);
+ sk = udp_v4_mcast_next(sk, hash, hport, daddr, uh->source, saddr, dif);
if (!sk) {
hash = hashwild;
- sk = udp_v4_mcast_next(skw, hash, uh->dest, daddr, uh->source,
+ sk = udp_v4_mcast_next(skw, hash, hport, daddr, uh->source,
saddr, dif);
}
if (sk) {
do {
struct sk_buff *skb1 = skb;
- sknext = udp_v4_mcast_next(sk_next(sk), hash, uh->dest,
- daddr, uh->source, saddr, dif);
+ sknext = udp_v4_mcast_next(sk_next(sk), hash, hport,
+ daddr, uh->source, saddr, dif);
if (!sknext && hash != hashwild) {
hash = hashwild;
- sknext = udp_v4_mcast_next(skw, hash, uh->dest,
+ sknext = udp_v4_mcast_next(skw, hash, hport,
daddr, uh->source, saddr, dif);
}
if (sknext)
@@ -1295,7 +1295,7 @@
return __udp4_lib_mcast_deliver(skb, uh, saddr, daddr, udptable);
sk = __udp4_lib_lookup(saddr, uh->source, daddr, uh->dest,
- skb->dev->ifindex, udptable );
+ skb->dev->ifindex, udptable);
if (sk != NULL) {
int ret = udp_queue_rcv_skb(sk, skb);