This causes checkpoint to fail if an interface actually has a
multicast membership.
Signed-off-by: Dan Smith <danms@xxxxxxxxxx>
---
net/checkpoint_dev.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/net/checkpoint_dev.c b/net/checkpoint_dev.c
index 776931b..11c6544 100644
--- a/net/checkpoint_dev.c
+++ b/net/checkpoint_dev.c
@@ -17,6 +17,7 @@
#include <linux/checkpoint.h>
#include <linux/checkpoint_hdr.h>
#include <linux/deferqueue.h>
+#include <linux/igmp.h>
#include <net/if_inet6.h>
#include <net/ipv6.h>
@@ -177,6 +178,7 @@ static int ckpt_netdev_inet4_addrs(struct in_device *indev,
struct ckpt_netdev_addr *abuf)
{
struct in_ifaddr *addr = indev->ifa_list;
+ struct ip_mc_list *mcaddr;
while (addr) {
abuf[index].type = CKPT_NETDEV_ADDR_IPV4;
@@ -190,6 +192,19 @@ static int ckpt_netdev_inet4_addrs(struct in_device *indev,
return -E2BIG;
}
+ for (mcaddr = indev->mc_list; mcaddr; mcaddr = mcaddr->next) {
+ if ((mcaddr->multiaddr & IGMP_LOCAL_GROUP_MASK) == IGMP_LOCAL_GROUP)
+ continue;
+
+ /* TODO */
+
+ /* Multicast addresses are not supported, so do not
+ * allow checkpoint to continue if one is assigned
+ */
+ ckpt_debug("ipv4 multicast addresses are not supported\n");
+ return -EINVAL;
+ }
+
return index;
}
--
1.6.2.5
_______________________________________________
Containers mailing list
Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx
https://lists.linux-foundation.org/mailman/listinfo/containers
