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| author | Balazs Scheidler <bazsi@balabit.hu> | 2010-10-21 16:08:28 +0200 |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2010-10-21 16:08:28 +0200 |
| commit | 6c46862280c5f55eda7750391bc65cd7e08c7535 (patch) | |
| tree | 51d670eebe49ff8f6c3f903f77d44230849f7583 /net/ipv6/datagram.c | |
| parent | aa976fc011efa1f0e3290c6c9addf7c20757f885 (diff) | |
| download | blackbird-obmc-linux-6c46862280c5f55eda7750391bc65cd7e08c7535.tar.gz blackbird-obmc-linux-6c46862280c5f55eda7750391bc65cd7e08c7535.zip | |
tproxy: added tproxy sockopt interface in the IPV6 layer
Support for IPV6_RECVORIGDSTADDR sockopt for UDP sockets were contributed by
Harry Mason.
Signed-off-by: Balazs Scheidler <bazsi@balabit.hu>
Signed-off-by: KOVACS Krisztian <hidden@balabit.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/ipv6/datagram.c')
| -rw-r--r-- | net/ipv6/datagram.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c index ef371aa01ac5..320bdb877eed 100644 --- a/net/ipv6/datagram.c +++ b/net/ipv6/datagram.c @@ -577,6 +577,25 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) u8 *ptr = nh + opt->dst1; put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr); } + if (np->rxopt.bits.rxorigdstaddr) { + struct sockaddr_in6 sin6; + u16 *ports = (u16 *) skb_transport_header(skb); + + if (skb_transport_offset(skb) + 4 <= skb->len) { + /* All current transport protocols have the port numbers in the + * first four bytes of the transport header and this function is + * written with this assumption in mind. + */ + + sin6.sin6_family = AF_INET6; + ipv6_addr_copy(&sin6.sin6_addr, &ipv6_hdr(skb)->daddr); + sin6.sin6_port = ports[1]; + sin6.sin6_flowinfo = 0; + sin6.sin6_scope_id = 0; + + put_cmsg(msg, SOL_IPV6, IPV6_ORIGDSTADDR, sizeof(sin6), &sin6); + } + } return 0; } |
