[IPV6]: Support several new sockopt / ancillary data in Advanced API (RFC3542).

Support several new socket options / ancillary data:
  IPV6_RECVPKTINFO, IPV6_PKTINFO,
  IPV6_RECVHOPOPTS, IPV6_HOPOPTS,
  IPV6_RECVDSTOPTS, IPV6_DSTOPTS, IPV6_RTHDRDSTOPTS,
  IPV6_RECVRTHDR, IPV6_RTHDR,
  IPV6_RECVHOPOPTS, IPV6_HOPOPTS

Old semantics are preserved as IPV6_2292xxxx so that
we can maintain backward compatibility.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 3203eaff4bd4..8a9fe9434e94 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -233,6 +233,10 @@ extern int 			ip6_ra_control(struct sock *sk, int sel,
 extern int                      ipv6_parse_hopopts(struct sk_buff *skb, int);
 
 extern struct ipv6_txoptions *  ipv6_dup_options(struct sock *sk, struct ipv6_txoptions *opt);
+extern struct ipv6_txoptions *  ipv6_renew_options(struct sock *sk, struct ipv6_txoptions *opt,
+                                                   int newtype,
+                                                   struct ipv6_opt_hdr __user *newopt,
+                                                   int newoptlen);
 
 extern int ip6_frag_nqueues;
 extern atomic_t ip6_frag_mem;