linux-stable.git/net/smc, branch v5.3.2

net/smc: make sure EPOLLOUT is raised

2019-08-20T19:25:14+00:00

Currently, we are only explicitly setting SOCK_NOSPACE on a write timeout
for non-blocking sockets. Epoll() edge-trigger mode relies on SOCK_NOSPACE
being set when -EAGAIN is returned to ensure that EPOLLOUT is raised.
Expand the setting of SOCK_NOSPACE to non-blocking sockets as well that can
use SO_SNDTIMEO to adjust their write timeout. This mirrors the behavior
that Eric Dumazet introduced for tcp sockets.

Signed-off-by: Jason Baron 
Cc: Eric Dumazet 
Cc: Ursula Braun 
Cc: Karsten Graul 
Signed-off-by: David S. Miller

net/smc: avoid fallback in case of non-blocking connect

2019-08-05T20:24:37+00:00

FASTOPEN is not possible with SMC. sendmsg() with msg_flag MSG_FASTOPEN
triggers a fallback to TCP if the socket is in state SMC_INIT.
But if a nonblocking connect is already started, fallback to TCP
is no longer possible, even though the socket may still be in state
SMC_INIT.
And if a nonblocking connect is already started, a listen() call
does not make sense.

Reported-by: syzbot+bd8cc73d665590a1fcad@syzkaller.appspotmail.com
Fixes: 50717a37db032 ("net/smc: nonblocking connect rework")
Signed-off-by: Ursula Braun 
Signed-off-by: Karsten Graul 
Signed-off-by: David S. Miller

net/smc: do not schedule tx_work in SMC_CLOSED state

2019-08-05T20:23:05+00:00

The setsockopts options TCP_NODELAY and TCP_CORK may schedule the
tx worker. Make sure the socket is not yet moved into SMC_CLOSED
state (for instance by a shutdown SHUT_RDWR call).

Reported-by: syzbot+92209502e7aab127c75f@syzkaller.appspotmail.com
Reported-by: syzbot+b972214bb803a343f4fe@syzkaller.appspotmail.com
Fixes: 01d2f7e2cdd31 ("net/smc: sockopts TCP_NODELAY and TCP_CORK")
Signed-off-by: Ursula Braun 
Signed-off-by: Karsten Graul 
Signed-off-by: David S. Miller

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

2019-06-28T04:06:39+00:00

The new route handling in ip_mc_finish_output() from 'net' overlapped
with the new support for returning congestion notifications from BPF
programs.

In order to handle this I had to take the dev_loopback_xmit() calls
out of the switch statement.

The aquantia driver conflicts were simple overlapping changes.

Signed-off-by: David S. Miller

net/smc: common release code for non-accepted sockets

2019-06-27T16:58:49+00:00

There are common steps when releasing an accepted or unaccepted socket.
Move this code into a common routine.

Signed-off-by: Ursula Braun 
Signed-off-by: Karsten Graul 
Signed-off-by: David S. Miller

net/smc: Fix error path in smc_init

2019-06-26T17:10:16+00:00

If register_pernet_subsys success in smc_init,
we should cleanup it in case any other error.

Fixes: 64e28b52c7a6 (net/smc: add pnet table namespace support")
Signed-off-by: YueHaibing 
Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

net/smc: hold conns_lock before calling smc_lgr_register_conn()

2019-06-26T17:10:16+00:00

After smc_lgr_create(), the newly created link group is added
to smc_lgr_list, thus is accessible from other context.
Although link group creation is serialized by
smc_create_lgr_pending, the new link group may still be accessed
concurrently. For example, if ib_device is no longer active,
smc_ib_port_event_work() will call smc_port_terminate(), which
in turn will call __smc_lgr_terminate() on every link group of
this device. So conns_lock is required here.

Signed-off-by: Huaping Zhou 
Signed-off-by: Ursula Braun 
Signed-off-by: David S. Miller

net: use new in_dev_ifa iterators

2019-06-03T01:06:26+00:00

Use in_dev_for_each_ifa_rcu/rtnl instead.
This prevents sparse warnings once proper __rcu annotations are added.

Signed-off-by: Florian Westphal 

t di# Last commands done (6 commands done):

Signed-off-by: David S. Miller

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

treewide: Add SPDX license identifier for more missed files

2019-05-21T08:50:45+00:00

Add SPDX license identifiers to all files which:

 - Have no license information of any form

 - Have MODULE_LICENCE("GPL*") inside which was used in the initial
   scan/conversion to ignore the file

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman