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| author | Allan Stephens <allan.stephens@windriver.com> | 2008-06-04 17:28:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-06-04 17:28:45 -0700 |
| commit | 5307e46957e76d71f02d2d736030ad92cdb3dd8c (patch) | |
| tree | d6eeeaff687f2c15f4d07441a8c79d951407707e | |
| parent | 84b07c1638c36ae937d4930b467001a0d22904e5 (diff) | |
| download | linux-stable-5307e46957e76d71f02d2d736030ad92cdb3dd8c.tar.gz linux-stable-5307e46957e76d71f02d2d736030ad92cdb3dd8c.tar.bz2 linux-stable-5307e46957e76d71f02d2d736030ad92cdb3dd8c.zip | |
tipc: Standardize error checking on incoming messages via native API
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>
| -rw-r--r-- | net/tipc/port.c | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/net/tipc/port.c b/net/tipc/port.c index 0bd3e6192c43..4dfef9e798e3 100644 --- a/net/tipc/port.c +++ b/net/tipc/port.c @@ -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) - break; - if (msg_origport(msg) != peer_port) + if (!cb || !connected) 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); |