[TIPC] Improved tolerance to promiscuous mode interface

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 9 deletions

diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c
index 7a252785f727..b64661904e0d 100644
--- a/net/tipc/eth_media.c
+++ b/net/tipc/eth_media.c
@@ -98,17 +98,19 @@ static int recv_msg(struct sk_buff *buf, struct net_device *dev,
         u32 size;
 
         if (likely(eb_ptr->bearer)) {
-                size = msg_size((struct tipc_msg *)buf->data);
-                skb_trim(buf, size);
-                if (likely(buf->len == size)) {
-                        buf->next = NULL;
-                        tipc_recv_msg(buf, eb_ptr->bearer);
-                } else {
-                        kfree_skb(buf);
+               if (likely(!dev->promiscuity) ||
+                   !memcmp(buf->mac.raw,dev->dev_addr,ETH_ALEN) ||
+                   !memcmp(buf->mac.raw,dev->broadcast,ETH_ALEN)) {
+                        size = msg_size((struct tipc_msg *)buf->data);
+                        skb_trim(buf, size);
+                        if (likely(buf->len == size)) {
+                                buf->next = NULL;
+                                tipc_recv_msg(buf, eb_ptr->bearer);
+                                return TIPC_OK;
+                        }
                 }
-        } else {
-                kfree_skb(buf);
         }
+        kfree_skb(buf);
         return TIPC_OK;
 }