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tipc: Standardize error checking on incoming messages via native API

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This patch re-orders & re-groups the error checks performed on
messages being delivered to native API ports, in order to clarify the
similarities and differences required for the various message types.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Allan Stephens 2008-06-04 17:28:45 -07:00 committed by David S. Miller
parent 84b07c1638
commit 5307e46957
1 changed files with 9 additions and 16 deletions
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25
net/tipc/port.c
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@ -841,14 +841,14 @@ static void port_dispatcher_sigh(void *dummy)
u32 peer_node = port_peernode(p_ptr);
tipc_port_unlock(p_ptr);
if (unlikely(!cb))
goto reject;
if (unlikely(!connected)) {
if (tipc_connect2port(dref, &orig))
goto reject;
} else if ((msg_origport(msg) != peer_port) ||
(msg_orignode(msg) != peer_node))
goto reject;
if (unlikely(!cb))
goto reject;
if (unlikely(++p_ptr->publ.conn_unacked >=
TIPC_FLOW_CONTROL_WIN))
tipc_acknowledge(dref,
@ -862,9 +862,7 @@ static void port_dispatcher_sigh(void *dummy)
tipc_msg_event cb = up_ptr->msg_cb;
tipc_port_unlock(p_ptr);
if (unlikely(connected))
goto reject;
if (unlikely(!cb))
if (unlikely(!cb || connected))
goto reject;
skb_pull(buf, msg_hdr_sz(msg));
cb(usr_handle, dref, &buf, msg_data(msg),
@ -877,11 +875,7 @@ static void port_dispatcher_sigh(void *dummy)
tipc_named_msg_event cb = up_ptr->named_msg_cb;
tipc_port_unlock(p_ptr);
if (unlikely(connected))
goto reject;
if (unlikely(!cb))
goto reject;
if (unlikely(!published))
if (unlikely(!cb || connected || !published))
goto reject;
dseq.type = msg_nametype(msg);
dseq.lower = msg_nameinst(msg);
@ -908,11 +902,10 @@ err:
u32 peer_node = port_peernode(p_ptr);
tipc_port_unlock(p_ptr);
if (!connected || !cb)
if (!cb || !connected)
break;
if (msg_origport(msg) != peer_port)
break;
if (msg_orignode(msg) != peer_node)
if ((msg_origport(msg) != peer_port) ||
(msg_orignode(msg) != peer_node))
break;
tipc_disconnect(dref);
skb_pull(buf, msg_hdr_sz(msg));
@ -924,7 +917,7 @@ err:
tipc_msg_err_event cb = up_ptr->err_cb;
tipc_port_unlock(p_ptr);
if (connected || !cb)
if (!cb || connected)
break;
skb_pull(buf, msg_hdr_sz(msg));
cb(usr_handle, dref, &buf, msg_data(msg),
@ -937,7 +930,7 @@ err:
up_ptr->named_err_cb;
tipc_port_unlock(p_ptr);
if (connected || !cb)
if (!cb || connected)
break;
dseq.type = msg_nametype(msg);
dseq.lower = msg_nameinst(msg);