linux/net/tipc
Jon Paul Maloy 5b7066c3dd tipc: stricter filtering of packets in bearer layer
Resetting a bearer/interface, with the consequence of resetting all its
pertaining links, is not an atomic action. This becomes particularly
evident in very large clusters, where a lot of traffic may happen on the
remaining links while we are busy shutting them down. In extreme cases,
we may even see links being re-created and re-established before we are
finished with the job.

To solve this, we now introduce a solution where we temporarily detach
the bearer from the interface when the bearer is reset. This inhibits
all packet reception, while sending still is possible. For the latter,
we use the fact that the device's user pointer now is zero to filter out
which packets can be sent during this situation; i.e., outgoing RESET
messages only.  This filtering serves to speed up the neighbors'
detection of the loss event, and saves us from unnecessary probing.

Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-07 17:00:13 -04:00
..
addr.c tipc: simplify include dependencies 2015-05-14 12:24:45 -04:00
addr.h tipc: simplify include dependencies 2015-05-14 12:24:45 -04:00
bcast.c tipc: remove pre-allocated message header in link struct 2016-03-06 23:01:20 -05:00
bcast.h tipc: remove pre-allocated message header in link struct 2016-03-06 23:01:20 -05:00
bearer.c tipc: stricter filtering of packets in bearer layer 2016-04-07 17:00:13 -04:00
bearer.h tipc: eliminate remnants of hungarian notation 2015-11-20 14:06:10 -05:00
core.c tipc: create broadcast transmission link at namespace init 2015-10-24 06:56:27 -07:00
core.h tipc: reduce code dependency between binding table and node layer 2015-11-20 14:06:10 -05:00
discover.c tipc: eliminate buffer leak in bearer layer 2016-04-07 17:00:13 -04:00
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
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: move netlink policies to netlink.c 2016-03-07 14:56:41 -05:00
link.h tipc: remove pre-allocated message header in link struct 2016-03-06 23:01:20 -05:00
Makefile tipc: add ip/udp media type 2015-03-05 22:08:42 -05:00
msg.c tipc: let broadcast packet reception use new link receive function 2015-10-24 06:56:37 -07:00
msg.h tipc: stricter filtering of packets in bearer layer 2016-04-07 17:00:13 -04:00
name_distr.c tipc: reduce code dependency between binding table and node layer 2015-11-20 14:06:10 -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: move netlink policies to netlink.c 2016-03-07 14:56:41 -05:00
name_table.h
net.c tipc: move netlink policies to netlink.c 2016-03-07 14:56:41 -05:00
net.h
netlink_compat.c tipc: fix null deref crash in compat config path 2016-02-25 17:04:48 -05:00
netlink.c tipc: move netlink policies to netlink.c 2016-03-07 14:56:41 -05:00
netlink.h tipc: move netlink policies to netlink.c 2016-03-07 14:56:41 -05:00
node.c tipc: move netlink policies to netlink.c 2016-03-07 14:56:41 -05:00
node.h tipc: narrow down interface towards struct tipc_link 2015-11-20 14:06:10 -05:00
server.c tipc: use alloc_ordered_workqueue() instead of WQ_UNBOUND w/ max_active = 1 2016-02-06 03:41:58 -05:00
server.h
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
socket.h tipc: clean up socket layer message reception 2015-07-26 16:31:50 -07:00
subscr.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
subscr.h tipc: remove struct tipc_name_seq from struct tipc_subscription 2016-02-06 03:40:43 -05:00
sysctl.c
udp_media.c tipc: make sure IPv6 header fits in skb headroom 2016-03-14 12:23:12 -04:00