linux-stable/net/tipc
Jon Paul Maloy 7d33939f47 tipc: delay delete of link when failover is needed
When a bearer is disabled, all its attached links are deleted.
Ideally, we should do link failover to redundant links on other bearers,
if there are any, in such cases. This would be consistent with current
behavior when a link is reset, but not deleted. However, due to the
complexity involved, and the (wrongly) perceived low demand for this
feature, it was never implemented until now.

We mark the doomed link for deletion with a new flag, but wait until the
failover process is finished before we actually delete it. With the
improved link tunnelling/failover code introduced earlier in this commit
series, it is now easy to identify a spot in the code where the failover
is finished and it is safe to delete the marked link. Moreover, the test
for the flag and the deletion can be done synchronously, and outside the
most time critical data path.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-02-13 17:57:07 -05:00
..
addr.c tipc: compress out gratuitous extra carriage returns 2012-04-30 15:53:56 -04:00
addr.h tipc: explicitly include core.h in addr.h 2014-02-13 17:49:13 -05:00
bcast.c tipc: stricter behavior of message reassembly function 2014-02-13 17:57:05 -05:00
bcast.h tipc: cosmetic realignment of function arguments 2013-06-17 15:53:01 -07:00
bearer.c tipc: delay delete of link when failover is needed 2014-02-13 17:57:07 -05:00
bearer.h tipc: remove 'links' list from tipc_bearer struct 2014-02-13 17:57:05 -05:00
config.c tipc: convert config_lock from spinlock to mutex 2013-06-17 15:53:01 -07:00
config.h tipc: Optimize re-initialization of configuration service 2012-04-26 17:19:07 -04:00
core.c tipc: remove 'links' list from tipc_bearer struct 2014-02-13 17:57:05 -05:00
core.h tipc: Use <linux/uaccess.h> instead of <asm/uaccess.h> 2013-12-16 12:48:35 -05:00
discover.c tipc: introduce new spinlock to protect struct link_req 2014-01-07 18:44:25 -05:00
discover.h tipc: rename struct link* to struct tipc_link* 2011-12-29 21:53:30 -05:00
eth_media.c tipc: eliminate code duplication in media layer 2013-12-11 00:17:43 -05:00
handler.c tipc: protect handler_enabled variable with qitem_lock spin lock 2013-12-10 22:35:49 -05:00
ib_media.c tipc: eliminate code duplication in media layer 2013-12-11 00:17:43 -05:00
Kconfig tipc: add InfiniBand media type 2013-04-17 14:18:33 -04:00
link.c tipc: delay delete of link when failover is needed 2014-02-13 17:57:07 -05:00
link.h tipc: delay delete of link when failover is needed 2014-02-13 17:57:07 -05:00
log.c tipc: remove print_buf and deprecated log buffer code 2012-07-13 19:34:43 -04:00
Makefile tipc: introduce new TIPC server infrastructure 2013-06-17 15:53:00 -07:00
msg.c tipc: remove iovec length parameter from all sending functions 2013-10-18 13:20:42 -04:00
msg.h tipc: message reassembly using fragment chain 2013-11-07 18:30:11 -05:00
name_distr.c tipc: eliminate an unnecessary cast of node variable 2012-11-22 14:33:28 -05:00
name_distr.h
name_table.c tipc: remove unnecessary variables and conditions 2013-12-16 12:48:35 -05:00
name_table.h tipc: cosmetic realignment of function arguments 2013-06-17 15:53:01 -07:00
net.c tipc: change tipc_net_start routine return value type 2012-08-20 02:26:30 -07:00
net.h tipc: change tipc_net_start routine return value type 2012-08-20 02:26:30 -07:00
netlink.c genetlink: only pass array to genl_register_family_with_ops() 2013-11-19 16:39:05 -05:00
node.c tipc: delay delete of link when failover is needed 2014-02-13 17:57:07 -05:00
node.h tipc: remove 'has_redundant_link' flag from STATE link protocol messages 2014-01-07 18:44:25 -05:00
node_subscr.c tipc: cosmetic realignment of function arguments 2013-06-17 15:53:01 -07:00
node_subscr.h tipc: compress out gratuitous extra carriage returns 2012-04-30 15:53:56 -04:00
port.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-01-06 17:37:45 -05:00
port.h tipc: fix deadlock during socket release 2013-12-29 22:24:07 -05:00
ref.c tipc: use standard printk shortcut macros (pr_err etc.) 2012-07-13 19:24:44 -04:00
ref.h tipc: cleanup function namespace 2010-10-16 11:13:24 -07:00
server.c tipc: spelling fixes 2014-01-14 18:18:22 -08:00
server.h tipc: introduce new TIPC server infrastructure 2013-06-17 15:53:00 -07:00
socket.c net: add build-time checks for msg->msg_name size 2014-01-18 23:04:16 -08:00
subscr.c tipc: spelling fixes 2014-01-14 18:18:22 -08:00
subscr.h tipc: cosmetic realignment of function arguments 2013-06-17 15:53:01 -07:00
sysctl.c tipc: change socket buffer overflow control to respect sk_rcvbuf 2013-06-17 15:53:00 -07:00