From 121d1e0941e05c64ee4223064dd83eb24e871739 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Tue, 30 Oct 2012 01:08:49 +0000 Subject: netfilter: ipv6: add getsockopt to retrieve origdst userspace can query the original ipv4 destination address of a REDIRECTed connection via getsockopt(m_sock, SOL_IP, SO_ORIGINAL_DST, &m_server_addr, &addrsize) but for ipv6 no such option existed. This adds getsockopt(..., IPPROTO_IPV6, IP6T_SO_ORIGINAL_DST, ...). Without this, userspace needs to parse /proc or use ctnetlink, which appears to be overkill. This uses option number 80 for IP6T_SO_ORIGINAL_DST, which is spare, to use the same number we use in the IPv4 socket option SO_ORIGINAL_DST. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/in6.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/uapi/linux/in6.h') diff --git a/include/uapi/linux/in6.h b/include/uapi/linux/in6.h index 1e3159989958..f79c3721da6e 100644 --- a/include/uapi/linux/in6.h +++ b/include/uapi/linux/in6.h @@ -240,6 +240,7 @@ struct in6_flowlabel_req { * * IP6T_SO_GET_REVISION_MATCH 68 * IP6T_SO_GET_REVISION_TARGET 69 + * IP6T_SO_ORIGINAL_DST 80 */ /* RFC5014: Source address selection */ -- cgit v1.2.3