net-timestamp: no-payload option

[cascardo/linux.git] / net / ipv6 / datagram.c

diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 100c589..c215be7 100644 (file)
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -369,7 +369,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
 
        serr = SKB_EXT_ERR(skb);
 
-       if (sin) {
+       if (sin && skb->len) {
                const unsigned char *nh = skb_network_header(skb);
                sin->sin6_family = AF_INET6;
                sin->sin6_flowinfo = 0;
@@ -393,11 +393,9 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
 
        memcpy(&errhdr.ee, &serr->ee, sizeof(struct sock_extended_err));
        sin = &errhdr.offender;
-       sin->sin6_family = AF_UNSPEC;
-       if (serr->ee.ee_origin != SO_EE_ORIGIN_LOCAL) {
+       memset(sin, 0, sizeof(*sin));
+       if (serr->ee.ee_origin != SO_EE_ORIGIN_LOCAL && skb->len) {
                sin->sin6_family = AF_INET6;
-               sin->sin6_flowinfo = 0;
-               sin->sin6_port = 0;
                if (np->rxopt.all) {
                        if (serr->ee.ee_origin != SO_EE_ORIGIN_ICMP &&
                            serr->ee.ee_origin != SO_EE_ORIGIN_ICMP6)
@@ -412,12 +410,9 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
                                ipv6_iface_scope_id(&sin->sin6_addr,
                                                    IP6CB(skb)->iif);
                } else {
-                       struct inet_sock *inet = inet_sk(sk);
-
                        ipv6_addr_set_v4mapped(ip_hdr(skb)->saddr,
                                               &sin->sin6_addr);
-                       sin->sin6_scope_id = 0;
-                       if (inet->cmsg_flags)
+                       if (inet_sk(sk)->cmsg_flags)
                                ip_cmsg_recv(msg, skb);
                }
        }