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tipc: create TIPC_CONNECTING as a new sk_state

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In this commit, we create a new tipc socket state TIPC_CONNECTING
by primarily replacing the SS_CONNECTING with TIPC_CONNECTING.

There is no functional change in this commit.

Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Parthasarathy Bhuvaragan 2016-11-01 14:02:48 +01:00 committed by David S. Miller
parent 6f00089c73
commit 99a2088981
1 changed files with 29 additions and 33 deletions
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62
net/tipc/socket.c
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@ -55,6 +55,7 @@ enum {
TIPC_ESTABLISHED = TCP_ESTABLISHED,
TIPC_OPEN = TCP_CLOSE,
TIPC_DISCONNECTING = TCP_CLOSE_WAIT,
TIPC_CONNECTING = TCP_SYN_SENT,
};
/**
@ -349,7 +350,6 @@ static bool tsk_peer_msg(struct tipc_sock *tsk, struct tipc_msg *msg)
*/
static int tipc_set_sk_state(struct sock *sk, int state)
{
int oldstate = sk->sk_socket->state;
int oldsk_state = sk->sk_state;
int res = -EINVAL;
@ -358,16 +358,17 @@ static int tipc_set_sk_state(struct sock *sk, int state)
res = 0;
break;
case TIPC_LISTEN:
case TIPC_CONNECTING:
if (oldsk_state == TIPC_OPEN)
res = 0;
break;
case TIPC_ESTABLISHED:
if (oldstate == SS_CONNECTING ||
if (oldsk_state == TIPC_CONNECTING ||
oldsk_state == TIPC_OPEN)
res = 0;
break;
case TIPC_DISCONNECTING:
if (oldstate == SS_CONNECTING ||
if (oldsk_state == TIPC_CONNECTING ||
oldsk_state == TIPC_ESTABLISHED)
res = 0;
break;
@ -689,16 +690,12 @@ static unsigned int tipc_poll(struct file *file, struct socket *sock,
if (sk->sk_shutdown == SHUTDOWN_MASK)
mask |= POLLHUP;
switch ((int)sock->state) {
case SS_CONNECTED:
if ((int)sock->state == SS_CONNECTED) {
if (!tsk->link_cong && !tsk_conn_cong(tsk))
mask |= POLLOUT;
/* fall thru' */
case SS_CONNECTING:
if (!skb_queue_empty(&sk->sk_receive_queue))
mask |= (POLLIN | POLLRDNORM);
break;
default:
} else {
switch (sk->sk_state) {
case TIPC_OPEN:
if (!tsk->link_cong)
@ -711,6 +708,7 @@ static unsigned int tipc_poll(struct file *file, struct socket *sock,
mask = (POLLIN | POLLRDNORM | POLLHUP);
break;
case TIPC_LISTEN:
case TIPC_CONNECTING:
if (!skb_queue_empty(&sk->sk_receive_queue))
mask |= (POLLIN | POLLRDNORM);
break;
@ -1014,7 +1012,7 @@ new_mtu:
rc = tipc_node_xmit(net, &pktchain, dnode, tsk->portid);
if (likely(!rc)) {
if (!is_connectionless)
sock->state = SS_CONNECTING;
tipc_set_sk_state(sk, TIPC_CONNECTING);
return dsz;
}
if (rc == -ELINKCONG) {
@ -1650,9 +1648,10 @@ static bool filter_connect(struct tipc_sock *tsk, struct sk_buff *skb)
sk->sk_state_change(sk);
}
return true;
}
case SS_CONNECTING:
switch (sk->sk_state) {
case TIPC_CONNECTING:
/* Accept only ACK or NACK message */
if (unlikely(!msg_connected(hdr)))
return false;
@ -1684,9 +1683,7 @@ static bool filter_connect(struct tipc_sock *tsk, struct sk_buff *skb)
/* 'ACK-' message is neither accepted nor rejected: */
msg_set_dest_droppable(hdr, 1);
return false;
}
switch (sk->sk_state) {
case TIPC_OPEN:
case TIPC_DISCONNECTING:
break;
@ -1955,7 +1952,8 @@ static int tipc_wait_for_connect(struct socket *sock, long *timeo_p)
return sock_intr_errno(*timeo_p);
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
done = sk_wait_event(sk, timeo_p, sock->state != SS_CONNECTING);
done = sk_wait_event(sk, timeo_p,
sk->sk_state != TIPC_CONNECTING);
finish_wait(sk_sleep(sk), &wait);
} while (!done);
return 0;
@ -1978,7 +1976,7 @@ static int tipc_connect(struct socket *sock, struct sockaddr *dest,
struct sockaddr_tipc *dst = (struct sockaddr_tipc *)dest;
struct msghdr m = {NULL,};
long timeout = (flags & O_NONBLOCK) ? 0 : tsk->conn_timeout;
socket_state previous;
int previous;
int res = 0;
lock_sock(sk);
@ -2006,7 +2004,7 @@ static int tipc_connect(struct socket *sock, struct sockaddr *dest,
goto exit;
}
previous = sock->state;
previous = sk->sk_state;
switch (sk->sk_state) {
case TIPC_OPEN:
@ -2024,31 +2022,29 @@ static int tipc_connect(struct socket *sock, struct sockaddr *dest,
if ((res < 0) && (res != -EWOULDBLOCK))
goto exit;
/* Just entered SS_CONNECTING state; the only
/* Just entered TIPC_CONNECTING state; the only
* difference is that return value in non-blocking
* case is EINPROGRESS, rather than EALREADY.
*/
res = -EINPROGRESS;
break;
}
switch (sock->state) {
case SS_CONNECTING:
if (previous == SS_CONNECTING)
res = -EALREADY;
if (!timeout)
/* fall thru' */
case TIPC_CONNECTING:
if (!timeout) {
if (previous == TIPC_CONNECTING)
res = -EALREADY;
goto exit;
}
timeout = msecs_to_jiffies(timeout);
/* Wait until an 'ACK' or 'RST' arrives, or a timeout occurs */
res = tipc_wait_for_connect(sock, &timeout);
break;
case SS_CONNECTED:
res = -EISCONN;
break;
default:
res = -EINVAL;
break;
goto exit;
}
if (sock->state == SS_CONNECTED)
res = -EISCONN;
else
res = -EINVAL;
exit:
release_sock(sk);
return res;