Re: Linux 2.6.9-rc1

[David S. Miller]

On Wed, 25 Aug 2004 23:14:07 -0700
"David S. Miller" <davem@xxxxxxxxxx> wrote:

> 
> Known problem, tonights BK sync has the fix.  Included below for
> your convenience:

Duh, the actual patch this time.
:)

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2004/08/25 20:20:04-07:00 laforge@xxxxxxxxxxxxx 
#   [NETFILTER]: Fix ip_nat_find_helper() locking.
#   
#   Signed-off-by: Harald Welte <laforge@xxxxxxxxxxxxx>
#   Signed-off-by: David S. Miller <davem@xxxxxxxxxx>
# 
# net/ipv4/netfilter/ip_nat_standalone.c
#   2004/08/25 20:19:30-07:00 laforge@xxxxxxxxxxxxx +2 -0
#   [NETFILTER]: Fix ip_nat_find_helper() locking.
# 
# net/ipv4/netfilter/ip_nat_helper.c
#   2004/08/25 20:19:30-07:00 laforge@xxxxxxxxxxxxx +7 -1
#   [NETFILTER]: Fix ip_nat_find_helper() locking.
# 
# net/ipv4/netfilter/ip_nat_core.c
#   2004/08/25 20:19:30-07:00 laforge@xxxxxxxxxxxxx +1 -1
#   [NETFILTER]: Fix ip_nat_find_helper() locking.
# 
# include/linux/netfilter_ipv4/ip_nat_helper.h
#   2004/08/25 20:19:30-07:00 laforge@xxxxxxxxxxxxx +3 -0
#   [NETFILTER]: Fix ip_nat_find_helper() locking.
# 
diff -Nru a/include/linux/netfilter_ipv4/ip_nat_helper.h b/include/linux/netfilter_ipv4/ip_nat_helper.h
--- a/include/linux/netfilter_ipv4/ip_nat_helper.h	2004-08-25 23:15:04 -07:00
+++ b/include/linux/netfilter_ipv4/ip_nat_helper.h	2004-08-25 23:15:04 -07:00
@@ -44,6 +44,9 @@
 extern struct ip_nat_helper *
 ip_nat_find_helper(const struct ip_conntrack_tuple *tuple);
 
+extern struct ip_nat_helper *
+__ip_nat_find_helper(const struct ip_conntrack_tuple *tuple);
+
 /* These return true or false. */
 extern int ip_nat_mangle_tcp_packet(struct sk_buff **skb,
 				struct ip_conntrack *ct,
diff -Nru a/net/ipv4/netfilter/ip_nat_core.c b/net/ipv4/netfilter/ip_nat_core.c
--- a/net/ipv4/netfilter/ip_nat_core.c	2004-08-25 23:15:04 -07:00
+++ b/net/ipv4/netfilter/ip_nat_core.c	2004-08-25 23:15:04 -07:00
@@ -635,7 +635,7 @@
 
 	/* If there's a helper, assign it; based on new tuple. */
 	if (!conntrack->master)
-		info->helper = ip_nat_find_helper(&reply);
+		info->helper = __ip_nat_find_helper(&reply);
 
 	/* It's done. */
 	info->initialized |= (1 << HOOK2MANIP(hooknum));
diff -Nru a/net/ipv4/netfilter/ip_nat_helper.c b/net/ipv4/netfilter/ip_nat_helper.c
--- a/net/ipv4/netfilter/ip_nat_helper.c	2004-08-25 23:15:04 -07:00
+++ b/net/ipv4/netfilter/ip_nat_helper.c	2004-08-25 23:15:04 -07:00
@@ -421,12 +421,18 @@
 }
 
 struct ip_nat_helper *
+__ip_nat_find_helper(const struct ip_conntrack_tuple *tuple)
+{
+	return LIST_FIND(&helpers, helper_cmp, struct ip_nat_helper *, tuple);
+}
+
+struct ip_nat_helper *
 ip_nat_find_helper(const struct ip_conntrack_tuple *tuple)
 {
 	struct ip_nat_helper *h;
 
 	READ_LOCK(&ip_nat_lock);
-	h = LIST_FIND(&helpers, helper_cmp, struct ip_nat_helper *, tuple);
+	h = __ip_nat_find_helper(tuple);
 	READ_UNLOCK(&ip_nat_lock);
 
 	return h;
diff -Nru a/net/ipv4/netfilter/ip_nat_standalone.c b/net/ipv4/netfilter/ip_nat_standalone.c
--- a/net/ipv4/netfilter/ip_nat_standalone.c	2004-08-25 23:15:04 -07:00
+++ b/net/ipv4/netfilter/ip_nat_standalone.c	2004-08-25 23:15:04 -07:00
@@ -394,4 +394,6 @@
 EXPORT_SYMBOL(ip_nat_mangle_tcp_packet);
 EXPORT_SYMBOL(ip_nat_mangle_udp_packet);
 EXPORT_SYMBOL(ip_nat_used_tuple);
+EXPORT_SYMBOL(ip_nat_find_helper);
+EXPORT_SYMBOL(__ip_nat_find_helper);
 MODULE_LICENSE("GPL");
-
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