linux/drivers/infiniband/core
Sean Hefty ead595aeb0 RDMA/cma: Do not issue MRA if user rejects connection request
There's an undesirable interaction with issuing MRA requests to
increase connection timeouts and the listen backlog.

When the rdma_cm receives a connection request, it queues an MRA with
the ib_cm.  (The ib_cm will send an MRA if it receives a duplicate
REQ.)  The rdma_cm will then create a new rdma_cm_id and give that to
the user, which in this case is the rdma_user_cm.

If the listen backlog maintained in the rdma_user_cm is full, it
destroys the rdma_cm_id, which in turns destroys the ib_cm_id.  The
ib_cm_id generates a REJ because the state of the ib_cm_id has changed
to MRA sent, versus REQ received.  When the backlog is full, we just
want to drop the REQ so that it is retried later.

Fix this by deferring queuing the MRA until after the user of the
rdma_cm has examined the connection request.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-02-14 15:30:41 -08:00
..
addr.c [NETNS]: Add namespace parameter to ip_route_output_key. 2008-01-28 15:11:07 -08:00
agent.c
agent.h
cache.c
cm.c IB/cm: Fix infiniband_cm class kobject ref counting 2008-02-12 14:38:27 -08:00
cm_msgs.h
cma.c RDMA/cma: Do not issue MRA if user rejects connection request 2008-02-14 15:30:41 -08:00
core_priv.h
device.c
fmr_pool.c IB/fmr_pool: Allocate page list for pool FMRs only when caching enabled 2008-02-04 20:20:44 -08:00
iwcm.c
iwcm.h
mad.c IB/mad: Fix incorrect access to items on local_list 2008-01-25 14:15:31 -08:00
mad_priv.h IB/mad: Report number of times a mad was retried 2008-01-25 14:15:30 -08:00
mad_rmpp.c IB/mad: Report number of times a mad was retried 2008-01-25 14:15:30 -08:00
mad_rmpp.h
Makefile
multicast.c IB/multicast: Report errors on multicast groups if P_key changes 2008-01-25 14:15:29 -08:00
packer.c
sa.h
sa_query.c
smi.c
smi.h IB/mad: Enable loopback of DR SMP responses from userspace 2008-01-25 14:15:25 -08:00
sysfs.c Kobject: convert drivers/* from kobject_unregister() to kobject_put() 2008-01-24 20:40:40 -08:00
ucm.c IB/cm: Add basic performance counters 2008-01-25 14:15:30 -08:00
ucma.c RDMA/cma: add support for rdma_migrate_id() 2008-01-25 14:15:32 -08:00
ud_header.c
umem.c SG: Change sg_set_page() to take length and offset argument 2007-10-24 11:20:47 +02:00
user_mad.c IB/umad: Simplify and fix locking 2008-01-25 14:15:42 -08:00
uverbs.h
uverbs_cmd.c
uverbs_main.c
uverbs_marshall.c
verbs.c