[RFC,v4,0/3] vsock: return errors other than -ENOMEM to socket

Message

Arseniy Krasnov April 2, 2023, 6:14 p.m. UTC

Hello,

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 c43170b7e157 ("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/[e-mail]/
Link to v2:
https://lore.kernel.org/netdev/[e-mail]/
Link to v3:
https://lore.kernel.org/netdev/[e-mail]/

Changelog:

v1 -> v2:
 - Add patch for VMCI as Vishnu Dasa suggested.
v2 -> v3:
 - Change type of 'err' var in VMCI patches from 'int' to 'ssize_t'.
 - Split VMCI patch to two patches: for send and for receive cases.
 - Reorder patches: move VMCI before af_vsock.c.
v3 -> v4:
 - Exclude VMCI patch for send from patchset (merged to 'net').
 - Update commit message of VMCI patch for receive.

Arseniy Krasnov (3):
  vsock/vmci: convert VMCI error code to -ENOMEM on receive
  vsock: return errors other than -ENOMEM to socket
  vsock/test: update expected return values

 net/vmw_vsock/af_vsock.c         |  4 ++--
 net/vmw_vsock/vmci_transport.c   | 11 +++++++++--
 tools/testing/vsock/vsock_test.c |  4 ++--
 3 files changed, 13 insertions(+), 6 deletions(-)