Merge branch 'vsock-return-errors-other-than-enomem-to-socket'

Arseniy Krasnov says:

====================
vsock: return errors other than -ENOMEM to socket

this patchset removes behaviour, where error code returned from any
transport was always switched to ENOMEM. This works in the same way as
patch from Bobby Eshleman:
commit c43170b7 ("vsock: return errors other than -ENOMEM to socket"),
but for receive calls. VMCI transport is also updated (both tx and rx
SOCK_STREAM callbacks), because it returns VMCI specific error code to
af_vsock.c (like VMCI_ERROR_*). Tx path is already merged to net, so it
was excluded from patchset in v4. At the same time, virtio and Hyper-V
transports are using general error codes, so there is no need to update
them.

vsock_test suite is also updated.

Link to v1:
https://lore.kernel.org/netdev/97f19214-ba04-c47e-7486-72e8aa16c690@sberdevices.ru/
Link to v2:
https://lore.kernel.org/netdev/60abc0da-0412-6e25-eeb0-8e32e3ec21e7@sberdevices.ru/
Link to v3:
https://lore.kernel.org/netdev/dead4842-333a-015e-028b-302151336ff9@sberdevices.ru/
====================

Link: https://lore.kernel.org/r/0d20e25a-640c-72c1-2dcb-7a53a05e3132@sberdevices.ru


Signed-off-by: Paolo Abeni <pabeni@redhat.com>