> On Mar 30, 2023, at 1:19 AM, Stefano Garzarella wrote:
>
> !! External Email
>
> On Thu, Mar 30, 2023 at 10:07:36AM +0300, Arseniy Krasnov wrote:
>> This adds conversion of VMCI specific error code to general -ENOMEM. It
>> is needed, because af_vsock.c passes error value returned from transport
>> to the user.
>>
>> Signed-off-by: Arseniy Krasnov
>> ---
>> net/vmw_vsock/vmci_transport.c | 19 ---
>> 1 file changed, 16 insertions(+), 3 deletions(-)
>>
>> diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
>> index 36eb16a40745..45de3e75597f 100644
>> --- a/net/vmw_vsock/vmci_transport.c
>> +++ b/net/vmw_vsock/vmci_transport.c
>> @@ -1831,10 +1831,17 @@ static ssize_t vmci_transport_stream_dequeue(
>> size_t len,
>> int flags)
>> {
>> + int err;
>
> Please, use the same type returned by the function.
>
>> +
>> if (flags & MSG_PEEK)
>> - return vmci_qpair_peekv(vmci_trans(vsk)->qpair, msg, len, 0);
>> + err = vmci_qpair_peekv(vmci_trans(vsk)->qpair, msg, len, 0);
>> else
>> - return vmci_qpair_dequev(vmci_trans(vsk)->qpair, msg, len, 0);
>> + err = vmci_qpair_dequev(vmci_trans(vsk)->qpair, msg, len, 0);
>> +
>> + if (err < 0)
>> + err = -ENOMEM;
>> +
>> + return err;
>> }
>>
>> static ssize_t vmci_transport_stream_enqueue(
>> @@ -1842,7 +1849,13 @@ static ssize_t vmci_transport_stream_enqueue(
>> struct msghdr *msg,
>> size_t len)
>> {
>> - return vmci_qpair_enquev(vmci_trans(vsk)->qpair, msg, len, 0);
>> + int err;
>
> Ditto.
>
>> +
>> + err = vmci_qpair_enquev(vmci_trans(vsk)->qpair, msg, len, 0);
>> + if (err < 0)
>> + err = -ENOMEM;
>> +
>> + return err;
>> }
>
> @Vishnu: should we backport the change for
> vmci_transport_stream_enqueue() to stable branches?
>
> In this case I would split this patch and I would send the
> vmci_transport_stream_enqueue() change to the net branch including:
>
> Fixes: c43170b7e157 ("vsock: return errors other than -ENOMEM to socket")
Yes, good point. It would be better to do it this way for correctness.
Thanks,
Vishnu
>
> Thanks,
> Stefano
>
>
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