[IPV6]: Support IPV6_{RECV,}TCLASS socket options / ancillary data.

Based on patch from David L Stevens <dlstevens@us.ibm.com>

Signed-off-by: David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

1 files changed, 21 insertions, 1 deletions

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index dc1d9914bf7d..8567873d0dd8 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -264,6 +264,18 @@ int ipv6_setsockopt(struct sock *sk, int level, int optname,
                 retv = 0;
                 break;
 
+        case IPV6_TCLASS:
+                if (val < 0 || val > 0xff)
+                        goto e_inval;
+                np->tclass = val;
+                retv = 0;
+                break;
+                
+        case IPV6_RECVTCLASS:
+                np->rxopt.bits.rxtclass = valbool;
+                retv = 0;
+                break;
+
         case IPV6_FLOWINFO:
                 np->rxopt.bits.rxflow = valbool;
                 retv = 0;
@@ -364,7 +376,7 @@ sticky_done:
                 msg.msg_controllen = optlen;
                 msg.msg_control = (void*)(opt+1);
 
-                retv = datagram_send_ctl(&msg, &fl, opt, &junk);
+                retv = datagram_send_ctl(&msg, &fl, opt, &junk, &junk);
                 if (retv)
                         goto done;
 update:
@@ -787,6 +799,14 @@ int ipv6_getsockopt(struct sock *sk, int level, int optname,
                 val = np->rxopt.bits.odstopts;
                 break;
 
+        case IPV6_TCLASS:
+                val = np->tclass;
+                break;
+
+        case IPV6_RECVTCLASS:
+                val = np->rxopt.bits.rxtclass;
+                break;
+
         case IPV6_FLOWINFO:
                 val = np->rxopt.bits.rxflow;
                 break;