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| author | Jon Maloy <jon.maloy@ericsson.com> | 2017-10-20 11:21:32 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-22 02:36:35 +0100 |
| commit | 0d5fcebf3c370eb27f9a0e8db454625e73cd1cb4 (patch) | |
| tree | 590c536fadf115aaf7873d3b0ea45b1c199dd7c9 /net/tipc/socket.c | |
| parent | 36341de257a127f3e73fdfb758e017e3a8548fb0 (diff) | |
| download | linux-0d5fcebf3c370eb27f9a0e8db454625e73cd1cb4.tar.gz linux-0d5fcebf3c370eb27f9a0e8db454625e73cd1cb4.tar.bz2 linux-0d5fcebf3c370eb27f9a0e8db454625e73cd1cb4.zip | |
tipc: refactor tipc_sk_timeout() function
The function tipc_sk_timeout() is more complex than necessary, and
even seems to contain an undetected bug. At one of the occurences
where we renew the timer we just order it with (HZ / 20), instead
of (jiffies + HZ / 20);
In this commit we clean up the function.
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/socket.c')
| -rw-r--r-- | net/tipc/socket.c | 49 |
1 files changed, 23 insertions, 26 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 357954ceb25c..b3b72d8e9543 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -48,7 +48,7 @@ #include "group.h" #define CONN_TIMEOUT_DEFAULT 8000 /* default connect timeout = 8s */ -#define CONN_PROBING_INTERVAL msecs_to_jiffies(3600000) /* [ms] => 1 h */ +#define CONN_PROBING_INTV msecs_to_jiffies(3600000) /* [ms] => 1 h */ #define TIPC_FWD_MSG 1 #define TIPC_MAX_PORT 0xffffffff #define TIPC_MIN_PORT 1 @@ -1472,7 +1472,7 @@ static void tipc_sk_finish_conn(struct tipc_sock *tsk, u32 peer_port, msg_set_lookup_scope(msg, 0); msg_set_hdr_sz(msg, SHORT_H_SIZE); - sk_reset_timer(sk, &sk->sk_timer, jiffies + CONN_PROBING_INTERVAL); + sk_reset_timer(sk, &sk->sk_timer, jiffies + CONN_PROBING_INTV); tipc_set_sk_state(sk, TIPC_ESTABLISHED); tipc_node_add_conn(net, peer_node, tsk->portid, peer_port); tsk->max_pkt = tipc_node_get_mtu(net, peer_node, tsk->portid); @@ -2533,43 +2533,40 @@ static int tipc_shutdown(struct socket *sock, int how) static void tipc_sk_timeout(unsigned long data) { struct tipc_sock *tsk = (struct tipc_sock *)data; + u32 peer_port = tsk_peer_port(tsk); + u32 peer_node = tsk_peer_node(tsk); + u32 own_node = tsk_own_node(tsk); + u32 own_port = tsk->portid; struct sock *sk = &tsk->sk; + struct net *net = sock_net(sk); struct sk_buff *skb = NULL; - u32 peer_port, peer_node; - u32 own_node = tsk_own_node(tsk); bh_lock_sock(sk); - if (!tipc_sk_connected(sk)) { - bh_unlock_sock(sk); + if (!tipc_sk_connected(sk)) + goto exit; + + /* Try again later if socket is busy */ + if (sock_owned_by_user(sk)) { + sk_reset_timer(sk, &sk->sk_timer, jiffies + HZ / 20); goto exit; } - peer_port = tsk_peer_port(tsk); - peer_node = tsk_peer_node(tsk); if (tsk->probe_unacked) { - if (!sock_owned_by_user(sk)) { - tipc_set_sk_state(sk, TIPC_DISCONNECTING); - tipc_node_remove_conn(sock_net(sk), tsk_peer_node(tsk), - tsk_peer_port(tsk)); - sk->sk_state_change(sk); - } else { - /* Try again later */ - sk_reset_timer(sk, &sk->sk_timer, (HZ / 20)); - } - - bh_unlock_sock(sk); + tipc_set_sk_state(sk, TIPC_DISCONNECTING); + tipc_node_remove_conn(net, peer_node, peer_port); + sk->sk_state_change(sk); goto exit; } - - skb = tipc_msg_create(CONN_MANAGER, CONN_PROBE, - INT_H_SIZE, 0, peer_node, own_node, - peer_port, tsk->portid, TIPC_OK); + /* Send new probe */ + skb = tipc_msg_create(CONN_MANAGER, CONN_PROBE, INT_H_SIZE, 0, + peer_node, own_node, peer_port, own_port, + TIPC_OK); tsk->probe_unacked = true; - sk_reset_timer(sk, &sk->sk_timer, jiffies + CONN_PROBING_INTERVAL); + sk_reset_timer(sk, &sk->sk_timer, jiffies + CONN_PROBING_INTV); +exit: bh_unlock_sock(sk); if (skb) - tipc_node_xmit_skb(sock_net(sk), skb, peer_node, tsk->portid); -exit: + tipc_node_xmit_skb(net, skb, peer_node, own_port); sock_put(sk); } |