netlink: add support for multi-part netlink messages.

Such messages do not have NLMSG_ERROR or NLMSG_DONE type
but they are valid responses. We test 'multi-partness'
by looking for NLM_F_MULTI flag.

diff --git a/src/util/virnetlink.c b/src/util/virnetlink.c
index 0276522a2cafa3245bc066802cca01bd7ed2c3fe..679b48e77b7b892c92003065f210a111a45b6401 100644 (file)
--- a/src/util/virnetlink.c
+++ b/src/util/virnetlink.c
@@ -394,7 +394,9 @@ virNetlinkGetErrorCode(struct nlmsghdr *resp, unsigned int recvbuflen)
         break;
 
     default:
-        goto malformed_resp;
+        /* We allow multipart messages. */
+        if (!(resp->nlmsg_flags & NLM_F_MULTI))
+            goto malformed_resp;
     }
 
     return result;