linux-stable.git/net/vmw_vsock, branch v4.9.69

vsock: use new wait API for vsock_stream_sendmsg()

2017-11-30T08:39:01+00:00

commit 499fde662f1957e3cb8d192a94a099ebe19c714b upstream.

As reported by Michal, vsock_stream_sendmsg() could still
sleep at vsock_stream_has_space() after prepare_to_wait():

  vsock_stream_has_space
    vmci_transport_stream_has_space
      vmci_qpair_produce_free_space
        qp_lock
          qp_acquire_queue_mutex
            mutex_lock

Just switch to the new wait API like we did for commit
d9dc8b0f8b4e ("net: fix sleeping for sk_wait_event()").

Reported-by: Michal Kubecek 
Cc: Stefan Hajnoczi 
Cc: Jorgen Hansen 
Cc: "Michael S. Tsirkin" 
Cc: Claudio Imbrenda 
Signed-off-by: Cong Wang 
Reviewed-by: Stefan Hajnoczi 
Signed-off-by: David S. Miller 
Cc: "Jorgen S. Hansen" 
Signed-off-by: Greg Kroah-Hartman

vsock/virtio: fix src/dst cid format

2017-01-09T07:32:23+00:00

commit f83f12d660d11718d3eed9d979ee03e83aa55544 upstream.

These fields are 64 bit, using le32_to_cpu and friends
on these will not do the right thing.
Fix this up.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Greg Kroah-Hartman

VSOCK: Don't dec ack backlog twice for rejected connections

2016-09-27T11:59:25+00:00

If a pending socket is marked as rejected, we will decrease the
sk_ack_backlog twice. So don't decrement it for rejected sockets
in vsock_pending_work().

Testing of the rejected socket path was done through code
modifications.

Reported-by: Stefan Hajnoczi 
Signed-off-by: Jorgen Hansen 
Reviewed-by: Adit Ranadive 
Reviewed-by: Aditya Sarwade 
Signed-off-by: David S. Miller

vhost/vsock: drop space available check for TX vq

2016-08-15T02:05:21+00:00

Remove unnecessary use of enable/disable callback notifications
and the incorrect more space available check.

The virtio_transport_tx_work handles when the TX virtqueue
has more buffers available.

Signed-off-by: Gerard Garcia 
Acked-by: Stefan Hajnoczi 
Signed-off-by: Michael S. Tsirkin

VSOCK: Add Makefile and Kconfig

2016-08-01T23:57:30+00:00

Enable virtio-vsock and vhost-vsock.

Signed-off-by: Asias He 
Signed-off-by: Stefan Hajnoczi 
Signed-off-by: Michael S. Tsirkin

VSOCK: Introduce virtio_transport.ko

2016-08-01T23:57:29+00:00

VM sockets virtio transport implementation.  This driver runs in the
guest.

Signed-off-by: Asias He 
Signed-off-by: Stefan Hajnoczi 
Signed-off-by: Michael S. Tsirkin

VSOCK: Introduce virtio_vsock_common.ko

2016-08-01T23:57:29+00:00

This module contains the common code and header files for the following
virtio_transporto and vhost_vsock kernel modules.

Signed-off-by: Asias He 
Signed-off-by: Claudio Imbrenda 
Signed-off-by: Stefan Hajnoczi 
Signed-off-by: Michael S. Tsirkin

VSOCK: defer sock removal to transports

2016-08-01T23:57:28+00:00

The virtio transport will implement graceful shutdown and the related
SO_LINGER socket option.  This requires orphaning the sock but keeping
it in the table of connections after .release().

This patch adds the vsock_remove_sock() function and leaves it up to the
transport when to remove the sock.

Signed-off-by: Stefan Hajnoczi 
Signed-off-by: Michael S. Tsirkin

VSOCK: transport-specific vsock_transport functions

2016-08-01T23:57:28+00:00

struct vsock_transport contains function pointers called by AF_VSOCK
core code.  The transport may want its own transport-specific function
pointers and they can be added after struct vsock_transport.

Allow the transport to fetch vsock_transport.  It can downcast it to
access transport-specific function pointers.

The virtio transport will use this.

Signed-off-by: Stefan Hajnoczi 
Signed-off-by: Michael S. Tsirkin

vsock: make listener child lock ordering explicit

2016-06-27T14:44:46+00:00

There are several places where the listener and pending or accept queue
child sockets are accessed at the same time.  Lockdep is unhappy that
two locks from the same class are held.

Tell lockdep that it is safe and document the lock ordering.

Originally Claudio Imbrenda  sent a similar
patch asking whether this is safe.  I have audited the code and also
covered the vsock_pending_work() function.

Suggested-by: Claudio Imbrenda 
Signed-off-by: Stefan Hajnoczi 
Signed-off-by: David S. Miller