lwn.git/net/smc, branch docs-5.0-fix

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-12-20T19:53:36+00:00

Lots of conflicts, by happily all cases of overlapping changes, parallel adds, things of that nature. Thanks to Stephen Rothwell, Saeed Mahameed, and others for their guidance in these resolutions. Signed-off-by: David S. Miller

net/smc: fix TCP fallback socket release

2018-12-19T06:02:51+00:00

clcsock can be released while kernel_accept() references it in TCP listen worker. Also, clcsock needs to wake up before released if TCP fallback is used and the clcsock is blocked by accept. Add a lock to safely release clcsock and call kernel_sock_shutdown() to wake up clcsock from accept in smc_release(). Reported-by: syzbot+0bf2e01269f1274b4b03@syzkaller.appspotmail.com Reported-by: syzbot+e3132895630f957306bc@syzkaller.appspotmail.com Signed-off-by: Myungho Jung Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-11-25T01:01:43+00:00

net/smc: unregister rkeys of unused buffer

2018-11-24T01:20:33+00:00

When an rmb is no longer in use by a connection, unregister its rkey at the remote peer with an LLC DELETE RKEY message. With this change, unused buffers held in the buffer pool are no longer registered at the remote peer. They are registered before the buffer is actually used and unregistered when they are no longer used by a connection. Signed-off-by: Karsten Graul Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

net/smc: add infrastructure to send delete rkey messages

2018-11-24T01:20:32+00:00

Add the infrastructure to send LLC messages of type DELETE RKEY to unregister a shared memory region at the peer. Signed-off-by: Karsten Graul Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

net/smc: avoid a delay by waiting for nothing

2018-11-24T01:20:32+00:00

When a send failed then don't start to wait for a response in smc_llc_do_confirm_rkey. Signed-off-by: Karsten Graul Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

net/smc: cleanup listen worker mutex unlocking

2018-11-24T01:20:32+00:00

For easier reading move the unlock of mutex smc_create_lgr_pending into smc_listen_work(), i.e. into the function the mutex has been locked. No functional change. Reported-by: Dan Carpenter Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

net/smc: short wait for late smc_clc_wait_msg

2018-11-24T01:20:32+00:00

After sending one of the initial LLC messages CONFIRM LINK or ADD LINK, there is already a wait for the LLC response. It does not make sense to wait another long time for a CLC DECLINE. Thus this patch introduces a shorter wait time for these cases. Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

net/smc: no link delete for a never active link

2018-11-24T01:20:32+00:00

If a link is terminated that has never reached the active state, there is no need to trigger an LLC DELETE LINK. Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

net/smc: allow fallback after clc timeouts

2018-11-24T01:20:32+00:00

If connection initialization fails for the LLC CONFIRM LINK or the LLC ADD LINK step, fallback to TCP should be enabled. Thus the negative return code -EAGAIN should switch to a positive timeout reason code in these cases, and the internal CLC socket should not have a set sk_err. Signed-off-by: Ursula Braun Signed-off-by: David S. Miller