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Phonet: 'connect' socket implementation for Pipe controller

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Based on suggestion by Rémi Denis-Courmont to implement 'connect'
for Pipe controller logic,  this patch implements 'connect' socket
call for the Pipe controller logic.
The patch does following:-
- Removes setsockopts for PNPIPE_CREATE and PNPIPE_DESTROY
- Adds setsockopt for setting the Pipe handle value
- Implements connect socket call
- Updates the Pipe controller logic

User-space should now follow below sequence with Pipe controller:-
-socket
-bind
-setsockopt for PNPIPE_PIPE_HANDLE
-connect
-setsockopt for PNPIPE_ENCAP_IP
-setsockopt for PNPIPE_ENABLE

GPRS/3G data has been tested working fine with this.

Signed-off-by: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kumar Sanghvi
2010-10-12 20:14:43 +00:00
committed by David S. Miller
parent 7368ddf144
commit b3d6255388
4 changed files with 215 additions and 191 deletions
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99
net/phonet/socket.c
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@@ -225,6 +225,101 @@ static int pn_socket_autobind(struct socket *sock)
return 0; /* socket was already bound */
}
#ifdef CONFIG_PHONET_PIPECTRLR
static int pn_socket_connect(struct socket *sock, struct sockaddr *addr,
int len, int flags)
{
struct sock *sk = sock->sk;
struct sockaddr_pn *spn = (struct sockaddr_pn *)addr;
long timeo;
int err;
if (len < sizeof(struct sockaddr_pn))
return -EINVAL;
if (spn->spn_family != AF_PHONET)
return -EAFNOSUPPORT;
lock_sock(sk);
switch (sock->state) {
case SS_UNCONNECTED:
sk->sk_state = TCP_CLOSE;
break;
case SS_CONNECTING:
switch (sk->sk_state) {
case TCP_SYN_RECV:
sock->state = SS_CONNECTED;
err = -EISCONN;
goto out;
case TCP_CLOSE:
err = -EALREADY;
if (flags & O_NONBLOCK)
goto out;
goto wait_connect;
}
break;
case SS_CONNECTED:
switch (sk->sk_state) {
case TCP_SYN_RECV:
err = -EISCONN;
goto out;
case TCP_CLOSE:
sock->state = SS_UNCONNECTED;
break;
}
break;
case SS_DISCONNECTING:
case SS_FREE:
break;
}
sk->sk_state = TCP_CLOSE;
sk_stream_kill_queues(sk);
sock->state = SS_CONNECTING;
err = sk->sk_prot->connect(sk, addr, len);
if (err < 0) {
sock->state = SS_UNCONNECTED;
sk->sk_state = TCP_CLOSE;
goto out;
}
err = -EINPROGRESS;
wait_connect:
if (sk->sk_state != TCP_SYN_RECV && (flags & O_NONBLOCK))
goto out;
timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
release_sock(sk);
err = -ERESTARTSYS;
timeo = wait_event_interruptible_timeout(*sk_sleep(sk),
sk->sk_state != TCP_CLOSE,
timeo);
lock_sock(sk);
if (timeo < 0)
goto out; /* -ERESTARTSYS */
err = -ETIMEDOUT;
if (timeo == 0 && sk->sk_state != TCP_SYN_RECV)
goto out;
if (sk->sk_state != TCP_SYN_RECV) {
sock->state = SS_UNCONNECTED;
err = sock_error(sk);
if (!err)
err = -ECONNREFUSED;
goto out;
}
sock->state = SS_CONNECTED;
err = 0;
out:
release_sock(sk);
return err;
}
#endif
static int pn_socket_accept(struct socket *sock, struct socket *newsock,
int flags)
{
@@ -393,7 +488,11 @@ const struct proto_ops phonet_stream_ops = {
.owner = THIS_MODULE,
.release = pn_socket_release,
.bind = pn_socket_bind,
#ifdef CONFIG_PHONET_PIPECTRLR
.connect = pn_socket_connect,
#else
.connect = sock_no_connect,
#endif
.socketpair = sock_no_socketpair,
.accept = pn_socket_accept,
.getname = pn_socket_getname,