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

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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>
This commit is contained in:
YOSHIFUJI Hideaki
2005-09-08 10:19:03 +09:00
parent 333fad5364
commit 41a1f8ea4f
11 changed files with 104 additions and 24 deletions
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16
net/ipv6/udp.c
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@@ -637,6 +637,7 @@ static int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
int addr_len = msg->msg_namelen;
int ulen = len;
int hlimit = -1;
int tclass = -1;
int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
int err;
@@ -758,7 +759,7 @@ do_udp_sendmsg:
memset(opt, 0, sizeof(struct ipv6_txoptions));
opt->tot_len = sizeof(*opt);
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;
@@ -814,6 +815,12 @@ do_udp_sendmsg:
hlimit = ipv6_get_hoplimit(dst->dev);
}
if (tclass < 0) {
tclass = np->tclass;
if (tclass < 0)
tclass = 0;
}
if (msg->msg_flags&MSG_CONFIRM)
goto do_confirm;
back_from_confirm:
@@ -833,9 +840,10 @@ back_from_confirm:
do_append_data:
up->len += ulen;
err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov, ulen, sizeof(struct udphdr),
hlimit, opt, fl, (struct rt6_info*)dst,
corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags);
err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov, ulen,
sizeof(struct udphdr), hlimit, tclass, opt, fl,
(struct rt6_info*)dst,
corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags);
if (err)
udp_v6_flush_pending_frames(sk);
else if (!corkreq)