[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, 32 insertions, 6 deletions

diff --git a/include/linux/in6.h b/include/linux/in6.h
index dcf5720ffcbb..c11022f2f2ac 100644
--- a/include/linux/in6.h
+++ b/include/linux/in6.h
@@ -148,13 +148,13 @@ struct in6_flowlabel_req
  */
 
 #define IPV6_ADDRFORM           1
-#define IPV6_PKTINFO            2
-#define IPV6_HOPOPTS            3
-#define IPV6_DSTOPTS            4
-#define IPV6_RTHDR              5
-#define IPV6_PKTOPTIONS         6
+#define IPV6_2292PKTINFO        2
+#define IPV6_2292HOPOPTS        3
+#define IPV6_2292DSTOPTS        4
+#define IPV6_2292RTHDR          5
+#define IPV6_2292PKTOPTIONS     6
 #define IPV6_CHECKSUM           7
-#define IPV6_HOPLIMIT           8
+#define IPV6_2292HOPLIMIT       8
 #define IPV6_NEXTHOP            9
 #define IPV6_AUTHHDR            10      /* obsolete */
 #define IPV6_FLOWINFO           11
@@ -198,4 +198,30 @@ struct in6_flowlabel_req
  * MCAST_MSFILTER               48
  */
 
+/* RFC3542 advanced socket options (50-67) */
+#define IPV6_RECVPKTINFO        50
+#define IPV6_PKTINFO            51
+#if 0
+#define IPV6_RECVPATHMTU        52
+#define IPV6_PATHMTU            53
+#define IPV6_DONTFRAG           54
+#define IPV6_USE_MIN_MTU        55
+#endif
+#define IPV6_RECVHOPOPTS        56
+#define IPV6_HOPOPTS            57
+#if 0
+#define IPV6_RECVRTHDRDSTOPTS   58      /* Unused, see net/ipv6/datagram.c */
+#endif
+#define IPV6_RTHDRDSTOPTS       59
+#define IPV6_RECVRTHDR          60
+#define IPV6_RTHDR              61
+#define IPV6_RECVDSTOPTS        62
+#define IPV6_DSTOPTS            63
+#define IPV6_RECVHOPLIMIT       64
+#define IPV6_HOPLIMIT           65
+#if 0
+#define IPV6_RECVTCLASS         66
+#define IPV6_TCLASS             67
+#endif
+
 #endif