From c8e6ad0829a723a74cd2fea9996a3392d2579a18 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Tue, 18 Feb 2014 21:38:08 +0100 Subject: ipv6: honor IPV6_PKTINFO with v4 mapped addresses on sendmsg In case we decide in udp6_sendmsg to send the packet down the ipv4 udp_sendmsg path because the destination is either of family AF_INET or the destination is an ipv4 mapped ipv6 address, we don't honor the maybe specified ipv4 mapped ipv6 address in IPV6_PKTINFO. We simply can check for this option in ip_cmsg_send because no calls to ipv6 module functions are needed to do so. Reported-by: Gert Doering Cc: Tore Anderson Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- include/net/ip.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/net') diff --git a/include/net/ip.h b/include/net/ip.h index 23be0fd37937..4aa781b7f609 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -489,7 +489,8 @@ int ip_options_rcv_srr(struct sk_buff *skb); void ipv4_pktinfo_prepare(const struct sock *sk, struct sk_buff *skb); void ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb); -int ip_cmsg_send(struct net *net, struct msghdr *msg, struct ipcm_cookie *ipc); +int ip_cmsg_send(struct net *net, struct msghdr *msg, + struct ipcm_cookie *ipc, bool allow_ipv6); int ip_setsockopt(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen); int ip_getsockopt(struct sock *sk, int level, int optname, char __user *optval, -- cgit v1.2.3