linux_dsm_epyc7002/net/tipc
Jon Maloy fa36882682 tipc: eliminate unnecessary probing
The neighbor monitor employs a threshold, default set to 32 peer nodes,
where it activates the "Overlapping Neighbor Monitoring" algorithm.
Below that threshold, monitoring is full-mesh, and no "domain records"
are passed between the nodes.

Because of this, a node never received a peer's ack that it has received
the most recent update of the own domain. Hence, the field 'acked_gen'
in struct tipc_monitor_state remains permamently at zero, whereas the
own domain generation is incremented for each added or removed peer.

This has the effect that the function tipc_mon_get_state() always sets
the field 'probing' in struct tipc_monitor_state true, again leading the
tipc_link_timeout() of the link in question to always send out a probe,
even when link->silent_intv_count is zero.

This is functionally harmless, but leads to some unncessary probing,
which can easily be eliminated by setting the 'probing' field of the
said struct correctly in such cases.

At the same time, we explictly invalidate the sent domain records when
the algorithm is not activated. This will eliminate any risk that an
invalid domain record might be inadverently accepted by the peer.

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-03 15:48:46 +09:00
..
addr.c tipc: simplify include dependencies 2015-05-14 12:24:45 -04:00
addr.h tipc: introduce constants for tipc address validation 2016-07-26 14:26:42 -07:00
bcast.c tipc: improve destination linked list 2017-10-13 08:46:00 -07:00
bcast.h tipc: make replicast a user selectable option 2017-01-20 12:10:17 -05:00
bearer.c tipc: remove unnecessary call to dev_net() 2017-09-06 21:25:52 -07:00
bearer.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
core.c netns: make struct pernet_operations::id unsigned int 2016-11-18 10:59:15 -05:00
core.h tipc: add ability to order and receive topology events in driver 2017-10-13 08:46:00 -07:00
discover.c net: tipc: Convert timers to use timer_setup() 2017-11-01 12:38:45 +09:00
discover.h tipc: eliminate buffer leak in bearer layer 2016-04-07 17:00:13 -04:00
eth_media.c tipc: make media address offset a common define 2015-02-27 18:18:48 -05:00
group.c tipc: add multipoint-to-point flow control 2017-10-13 08:46:01 -07:00
group.h tipc: guarantee that group broadcast doesn't bypass group unicast 2017-10-13 08:46:01 -07:00
ib_media.c tipc: rename media/msg related definitions 2015-02-27 18:18:48 -05:00
Kconfig tipc: add ip/udp media type 2015-03-05 22:08:42 -05:00
link.c tipc: fix rebasing error 2017-10-16 21:28:36 +01:00
link.h tipc: transfer broadcast nacks in link state messages 2016-09-02 17:10:24 -07:00
Makefile tipc: introduce communication groups 2017-10-13 08:46:00 -07:00
monitor.c tipc: eliminate unnecessary probing 2017-11-03 15:48:46 +09:00
monitor.h tipc: dump monitor attributes 2016-07-26 14:26:42 -07:00
msg.c tipc: refactor function filter_rcv() 2017-10-13 08:46:00 -07:00
msg.h tipc: add multipoint-to-point flow control 2017-10-13 08:46:01 -07:00
name_distr.c tipc: allocate user memory with GFP_KERNEL flag 2017-01-16 13:31:53 -05:00
name_distr.h tipc: reduce code dependency between binding table and node layer 2015-11-20 14:06:10 -05:00
name_table.c tipc: eliminate KASAN warning 2017-10-26 09:38:34 +09:00
name_table.h tipc: introduce group anycast messaging 2017-10-13 08:46:00 -07:00
net.c netlink: pass extended ACK struct where available 2017-04-13 13:58:22 -04:00
net.h tipc: add peer removal functionality 2016-08-18 23:36:07 -07:00
netlink_compat.c net: tipc: constify genl_ops 2017-08-23 22:31:38 -07:00
netlink.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
netlink.h tipc: make cluster size threshold for monitoring configurable 2016-07-26 14:26:42 -07:00
node.c net: tipc: Convert timers to use timer_setup() 2017-11-01 12:38:45 +09:00
node.h tipc: introduce communication groups 2017-10-13 08:46:00 -07:00
server.c tipc: checking for NULL instead of IS_ERR() 2017-10-20 08:34:00 +01:00
server.h tipc: add ability to order and receive topology events in driver 2017-10-13 08:46:00 -07:00
socket.c net: tipc: Convert timers to use timer_setup() 2017-11-01 12:38:45 +09:00
socket.h tipc: redesign connection-level flow control 2016-05-03 15:51:16 -04:00
subscr.c net: tipc: Convert timers to use timer_setup() 2017-11-01 12:38:45 +09:00
subscr.h tipc: adjust the policy of holding subscription kref 2017-03-28 18:03:33 -07:00
sysctl.c tipc: add name distributor resiliency queue 2014-09-01 17:51:48 -07:00
udp_media.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
udp_media.h tipc: add UDP remoteip dump to netlink API 2016-08-26 21:38:41 -07:00