diff options
| author | Hannes Frederic Sowa <hannes@stressinduktion.org> | 2014-01-20 02:43:08 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-01-20 03:53:18 (GMT) |
| commit | 4b261c75a99f29c93a0b6babfc180cdf566bd654 (patch) | |
| tree | 2c1fcebd79d2fcb1625f89ef5067605151953010 /net/ipv4/ping.c | |
| parent | a6e2fe17eba47681e82cdb9cfed5a67b57802a78 (diff) | |
| download | linux-4b261c75a99f29c93a0b6babfc180cdf566bd654.tar.xz | |
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 'net/ipv4/ping.c')
| -rw-r--r-- | net/ipv4/ping.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index e09e883..4a9e426 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -906,7 +906,12 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, } if (inet6_sk(sk)->rxopt.all) - pingv6_ops.ip6_datagram_recv_ctl(sk, msg, skb); + pingv6_ops.ip6_datagram_recv_common_ctl(sk, msg, skb); + if (skb->protocol == htons(ETH_P_IPV6) && + inet6_sk(sk)->rxopt.all) + pingv6_ops.ip6_datagram_recv_specific_ctl(sk, msg, skb); + else if (skb->protocol == htons(ETH_P_IP) && isk->cmsg_flags) + ip_cmsg_recv(msg, skb); #endif } else { BUG(); |