From: Paul Gortmaker <paul.gortmaker@windriver.com>
To: <davem@davemloft.net>
Cc: <netdev@vger.kernel.org>, <allan.stephens@windriver.com>,
<ying.xue@windriver.com>
Subject: [PATCH net-next 12/16] tipc: take lock while updating node network address
Date: Fri, 20 Apr 2012 17:05:20 -0400 [thread overview]
Message-ID: <1334955924-907-13-git-send-email-paul.gortmaker@windriver.com> (raw)
In-Reply-To: <1334955924-907-1-git-send-email-paul.gortmaker@windriver.com>
From: Allan Stephens <allan.stephens@windriver.com>
The routine that changes the node's network address now takes TIPC's
network lock in write mode while the main address variable and associated
data structures are being changed; this is needed to ensure that the
link subsystem won't attempt to send a message off-node until the sending
port's message header template has been updated with the node's new
network address.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
net/tipc/net.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/tipc/net.c b/net/tipc/net.c
index d4531b0..5fab4ff 100644
--- a/net/tipc/net.c
+++ b/net/tipc/net.c
@@ -178,11 +178,12 @@ int tipc_net_start(u32 addr)
tipc_subscr_stop();
tipc_cfg_stop();
+ write_lock_bh(&tipc_net_lock);
tipc_own_addr = addr;
tipc_named_reinit();
tipc_port_reinit();
-
tipc_bclink_init();
+ write_unlock_bh(&tipc_net_lock);
tipc_k_signal((Handler)tipc_subscr_start, 0);
tipc_k_signal((Handler)tipc_cfg_init, 0);
--
1.7.9.3
next prev parent reply other threads:[~2012-04-20 21:05 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-20 21:05 [PATCH net-next 00/16] tipc: publication lists and zero node handling Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 01/16] tipc: introduce publication lists struct Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 02/16] tipc: Factor out name publication code to a separate function Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 03/16] tipc: Separate cluster-scope and zone-scope names into distinct lists Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 04/16] tipc: Update node-scope publications when network address is assigned Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 05/16] tipc: Don't record failed publication attempt as a success Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 06/16] tipc: Add routines for safe checking of node's network address Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 07/16] tipc: Ensure network address change doesn't impact name table updates Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 08/16] tipc: Optimize re-initialization of port message header templates Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 09/16] tipc: Ensure network address change doesn't impact new port Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 10/16] tipc: delete duplicate peerport/peernode helper functions Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 11/16] tipc: Ensure network address change doesn't impact local connections Paul Gortmaker
2012-04-20 21:05 ` Paul Gortmaker [this message]
2012-04-20 21:05 ` [PATCH net-next 13/16] tipc: properly handle off-node send requests with invalid addr Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 14/16] tipc: handle <0.0.0> as an alias for this node on outgoing msgs Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 15/16] tipc: Ensure network address change doesn't impact rejected message Paul Gortmaker
2012-04-20 21:05 ` [PATCH net-next 16/16] tipc: Ensure network address change doesn't impact configuration service Paul Gortmaker
2012-04-21 0:45 ` [PATCH net-next 00/16] tipc: publication lists and zero node handling David Miller
2012-04-23 14:49 ` [PATCH net-next] tipc: remove inline instances from C source files Paul Gortmaker
2012-04-24 4:41 ` David Miller
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