[patch 06/38][IPV6] inet6_addr - ipv6_chk_same_addr namespace aware

Daniel Lezcano dlezcano at fr.ibm.com
Mon Dec 3 08:16:42 PST 2007


This patch makes ipv6_chk_same_addr function to be aware of the network
namespace. The addresses not belonging to the network namespace are 
discarded.

Signed-off-by: Daniel Lezcano <dlezcano at fr.ibm.com>
Signed-off-by: Benjamin Thery <benjamin.thery at bull.net>
---
 net/ipv6/addrconf.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

Index: linux-2.6-netns/net/ipv6/addrconf.c
===================================================================
--- linux-2.6-netns.orig/net/ipv6/addrconf.c
+++ linux-2.6-netns/net/ipv6/addrconf.c
@@ -141,7 +141,8 @@ static void ipv6_ifa_notify(int event, s
 
 static void inet6_prefix_notify(int event, struct inet6_dev *idev,
 				struct prefix_info *pinfo);
-static int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev);
+static int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
+			      struct net_device *dev);
 
 static ATOMIC_NOTIFIER_HEAD(inet6addr_chain);
 
@@ -535,7 +536,7 @@ ipv6_add_addr(struct inet6_dev *idev, co
 	write_lock(&addrconf_hash_lock);
 
 	/* Ignore adding duplicate addresses on an interface */
-	if (ipv6_chk_same_addr(addr, idev->dev)) {
+	if (ipv6_chk_same_addr(idev->dev->nd_net, addr, idev->dev)) {
 		ADBG(("ipv6_add_addr: already assigned\n"));
 		err = -EEXIST;
 		goto out;
@@ -1205,12 +1206,15 @@ int ipv6_chk_addr(struct net *net, struc
 EXPORT_SYMBOL(ipv6_chk_addr);
 
 static
-int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev)
+int ipv6_chk_same_addr(struct net *net, const struct in6_addr *addr,
+		       struct net_device *dev)
 {
 	struct inet6_ifaddr * ifp;
 	u8 hash = ipv6_addr_hash(addr);
 
 	for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
+		if (ifp->idev->dev->nd_net != net)
+			continue;
 		if (ipv6_addr_equal(&ifp->addr, addr)) {
 			if (dev == NULL || ifp->idev->dev == dev)
 				break;

-- 


More information about the Containers mailing list