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Date: Thu, 27 Oct 2016 16:22:36 +0200
From: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@...csson.com>
To: <netdev@...r.kernel.org>
CC: <tipc-discussion@...ts.sourceforge.net>, <jon.maloy@...csson.com>,
<maloy@...jonn.com>, <ying.xue@...driver.com>
Subject: [PATCH net-next v1 15/16] tipc: create TIPC_CONNECTING as a new sk_state
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.
Acked-by: Ying Xue <ying.xue@...driver.com>
Acked-by: Jon Maloy <jon.maloy@...csson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@...csson.com>
---
include/uapi/linux/tipc.h | 1 +
net/tipc/socket.c | 61 ++++++++++++++++++++++-------------------------
2 files changed, 29 insertions(+), 33 deletions(-)
diff --git a/include/uapi/linux/tipc.h b/include/uapi/linux/tipc.h
index a45ebf273e76..f2d9294d0920 100644
--- a/include/uapi/linux/tipc.h
+++ b/include/uapi/linux/tipc.h
@@ -186,6 +186,7 @@ enum {
TIPC_OPEN,
TIPC_DISCONNECTING,
TIPC_CLOSING,
+ TIPC_CONNECTING,
};
/*
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index cddf9bca9a90..7702acf0bfab 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -342,7 +342,6 @@ 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;
@@ -352,6 +351,7 @@ 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;
@@ -366,7 +366,7 @@ static int tipc_set_sk_state(struct sock *sk, int state)
case TIPC_DISCONNECTING:
if (oldsk_state == TIPC_PROBING ||
oldsk_state == TIPC_ESTABLISHED ||
- oldstate == SS_CONNECTING)
+ oldsk_state == TIPC_CONNECTING)
res = 0;
break;
}
@@ -516,7 +516,7 @@ static int tipc_release(struct socket *sock)
if (TIPC_SKB_CB(skb)->bytes_read)
kfree_skb(skb);
else {
- if ((sock->state == SS_CONNECTING) ||
+ if ((sk->sk_state == TIPC_CONNECTING) ||
(sock->state == SS_CONNECTED)) {
tipc_set_sk_state(sk, TIPC_CLOSING);
tipc_node_remove_conn(net, dnode, tsk->portid);
@@ -677,16 +677,12 @@ static unsigned int tipc_poll(struct file *file, struct socket *sock,
sock_poll_wait(file, sk_sleep(sk), wait);
- 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)
@@ -700,6 +696,7 @@ 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;
@@ -1004,7 +1001,7 @@ static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dsz)
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) {
@@ -1640,9 +1637,10 @@ 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;
@@ -1674,9 +1672,7 @@ 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_CLOSING:
case TIPC_DISCONNECTING:
@@ -1946,7 +1942,8 @@ 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;
@@ -1969,7 +1966,7 @@ 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);
@@ -1997,7 +1994,7 @@ 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:
@@ -2015,31 +2012,29 @@ 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:
+ goto exit;
+ }
+
+ if (sock->state == SS_CONNECTED)
res = -EISCONN;
- break;
- default:
+ else
res = -EINVAL;
- break;
- }
+
exit:
release_sock(sk);
return res;
@@ -2201,7 +2196,7 @@ static int tipc_shutdown(struct socket *sock, int how)
lock_sock(sk);
- if (sock->state == SS_CONNECTING || sock->state == SS_CONNECTED) {
+ if (sock->state == SS_CONNECTED || sk->sk_state == TIPC_CONNECTING) {
restart:
dnode = tsk_peer_node(tsk);
--
2.1.4
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