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authorHannes Frederic Sowa <hannes@stressinduktion.org>2014-01-20 03:43:08 +0100
committerDavid S. Miller <davem@davemloft.net>2014-01-19 19:53:18 -0800
commit4b261c75a99f29c93a0b6babfc180cdf566bd654 (patch)
tree2c1fcebd79d2fcb1625f89ef5067605151953010 /include/net/ip.h
parenta6e2fe17eba47681e82cdb9cfed5a67b57802a78 (diff)
downloadlinux-4b261c75a99f29c93a0b6babfc180cdf566bd654.tar.bz2
ipv6: make IPV6_RECVPKTINFO work for ipv4 datagrams
We currently don't report IPV6_RECVPKTINFO in cmsg access ancillary data for IPv4 datagrams on IPv6 sockets. This patch splits the ip6_datagram_recv_ctl into two functions, one which handles both protocol families, AF_INET and AF_INET6, while the ip6_datagram_recv_specific_ctl only handles IPv6 cmsg data. ip6_datagram_recv_*_ctl never reported back any errors, so we can make them return void. Also provide a helper for protocols which don't offer dual personality to further use ip6_datagram_recv_ctl, which is exported to modules. I needed to shuffle the code for ping around a bit to make it easier to implement dual personality for ping ipv6 sockets in future. Reported-by: Gert Doering <gert@space.net> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/ip.h')
-rw-r--r--include/net/ip.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/ip.h b/include/net/ip.h
index 7876e3b96ce3..23be0fd37937 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -63,6 +63,7 @@ struct ipcm_cookie {
};
#define IPCB(skb) ((struct inet_skb_parm*)((skb)->cb))
+#define PKTINFO_SKB_CB(skb) ((struct in_pktinfo *)((skb)->cb))
struct ip_ra_chain {
struct ip_ra_chain __rcu *next;