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Message-ID: <5440aa51-8a6c-ac9f-9578-5bf9d66217a5@sberdevices.ru>
Date:   Sun, 2 Apr 2023 21:14:37 +0300
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To:     Stefan Hajnoczi <stefanha@redhat.com>,
        Stefano Garzarella <sgarzare@redhat.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Bobby Eshleman <bobby.eshleman@bytedance.com>,
        Bryan Tan <bryantan@vmware.com>, Vishnu Dasa <vdasa@vmware.com>
CC:     <kvm@vger.kernel.org>, <virtualization@lists.linux-foundation.org>,
        <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <kernel@sberdevices.ru>, <oxffffaa@gmail.com>,
        <avkrasnov@sberdevices.ru>, <pv-drivers@vmware.com>
From:   Arseniy Krasnov <avkrasnov@sberdevices.ru>
Subject: [RFC PATCH v4 0/3] vsock: return errors other than -ENOMEM to socket
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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/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/

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(-)

-- 
2.25.1