[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>
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index e527a16..2ad3789 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -655,6 +655,7 @@
struct flowi fl;
int addr_len = msg->msg_namelen;
int hlimit = -1;
+ int tclass = -1;
u16 proto;
int err;
@@ -740,7 +741,7 @@
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(struct ipv6_txoptions);
- err = datagram_send_ctl(msg, &fl, opt, &hlimit);
+ err = datagram_send_ctl(msg, &fl, opt, &hlimit, &tclass);
if (err < 0) {
fl6_sock_release(flowlabel);
return err;
@@ -797,6 +798,12 @@
hlimit = ipv6_get_hoplimit(dst->dev);
}
+ if (tclass < 0) {
+ tclass = np->cork.tclass;
+ if (tclass < 0)
+ tclass = 0;
+ }
+
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
@@ -805,8 +812,9 @@
err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
} else {
lock_sock(sk);
- err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov, len, 0,
- hlimit, opt, &fl, (struct rt6_info*)dst, msg->msg_flags);
+ err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
+ len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
+ msg->msg_flags);
if (err)
ip6_flush_pending_frames(sk);