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| author | Jon Paul Maloy <jon.maloy@ericsson.com> | 2014-08-23 02:09:15 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-08-23 22:18:34 +0400 |
| commit | 9b50fd087a9f1454d6a8b613fff376dfb6d6ea93 (patch) | |
| tree | aa33132baefa002ee81a2cd2603ed7891ee0eecd /net/tipc | |
| parent | 5a9ee0be3371eb77d671a77e26261931c5c3fb31 (diff) | |
| download | linux-9b50fd087a9f1454d6a8b613fff376dfb6d6ea93.tar.xz | |
tipc: replace port pointer with socket pointer in registry
In order to make tipc_sock the only entity referencable from other
parts of the stack, we add a tipc_sock pointer instead of a tipc_port
pointer to the registry. As a consequence, we also let the function
tipc_port_lock() return a pointer to a tipc_sock instead of a tipc_port.
We keep the function's name for now, since the lock still is owned by
the port.
This is another step in the direction of eliminating port_lock, replacing
its usage with lock_sock() and bh_lock_sock().
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/port.h | 4 | ||||
| -rw-r--r-- | net/tipc/socket.c | 23 |
2 files changed, 11 insertions, 16 deletions
diff --git a/net/tipc/port.h b/net/tipc/port.h index 4a3c54e5d69c..33e52fe50e10 100644 --- a/net/tipc/port.h +++ b/net/tipc/port.h @@ -101,9 +101,9 @@ void tipc_port_reinit(void); /** * tipc_port_lock - lock port instance referred to and return its pointer */ -static inline struct tipc_port *tipc_port_lock(u32 ref) +static inline struct tipc_sock *tipc_port_lock(u32 ref) { - return (struct tipc_port *)tipc_ref_lock(ref); + return (struct tipc_sock *)tipc_ref_lock(ref); } /** diff --git a/net/tipc/socket.c b/net/tipc/socket.c index ddc2f8c6fced..247f245ff596 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -115,11 +115,7 @@ static struct proto tipc_proto_kern; */ static struct tipc_sock *tipc_sk_lock_next(u32 *ref) { - struct tipc_port *port = (struct tipc_port *)tipc_ref_lock_next(ref); - - if (!port) - return NULL; - return tipc_port_to_sock(port); + return (struct tipc_sock *)tipc_ref_lock_next(ref); } /** @@ -204,7 +200,7 @@ static int tipc_sk_create(struct net *net, struct socket *sock, tsk = tipc_sk(sk); port = &tsk->port; - ref = tipc_ref_acquire(port, &port->lock); + ref = tipc_ref_acquire(tsk, &port->lock); if (!ref) { pr_warn("Socket create failed; reference table exhausted\n"); return -ENOMEM; @@ -1655,13 +1651,12 @@ int tipc_sk_rcv(struct sk_buff *buf) u32 dnode; /* Validate destination and message */ - port = tipc_port_lock(dport); - if (unlikely(!port)) { + tsk = tipc_port_lock(dport); + if (unlikely(!tsk)) { rc = tipc_msg_eval(buf, &dnode); goto exit; } - - tsk = tipc_port_to_sock(port); + port = &tsk->port; sk = &tsk->sk; /* Queue message */ @@ -2002,21 +1997,21 @@ restart: static void tipc_sk_timeout(unsigned long ref) { - struct tipc_port *port = tipc_port_lock(ref); - struct tipc_sock *tsk; + struct tipc_sock *tsk = tipc_port_lock(ref); + struct tipc_port *port; struct sock *sk; struct sk_buff *buf = NULL; struct tipc_msg *msg = NULL; u32 peer_port, peer_node; - if (!port) + if (!tsk) return; + port = &tsk->port; if (!port->connected) { tipc_port_unlock(port); return; } - tsk = tipc_port_to_sock(port); sk = &tsk->sk; bh_lock_sock(sk); peer_port = tipc_port_peerport(port); |