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Message-ID: <20221201092330.ia5addl4sgw7fhk2@sgarzare-redhat>
Date: Thu, 1 Dec 2022 10:23:30 +0100
From: Stefano Garzarella <sgarzare@...hat.com>
To: Arseniy Krasnov <AVKrasnov@...rdevices.ru>,
Dexuan Cui <decui@...rosoft.com>
Cc: "David S. Miller" <davem@...emloft.net>,
"edumazet@...gle.com" <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
"kys@...rosoft.com" <kys@...rosoft.com>,
"haiyangz@...rosoft.com" <haiyangz@...rosoft.com>,
"wei.liu@...nel.org" <wei.liu@...nel.org>,
Bryan Tan <bryantan@...are.com>,
Vishnu Dasa <vdasa@...are.com>,
Krasnov Arseniy <oxffffaa@...il.com>,
Bobby Eshleman <bobby.eshleman@...il.com>,
Bobby Eshleman <bobby.eshleman@...edance.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"virtualization@...ts.linux-foundation.org"
<virtualization@...ts.linux-foundation.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
kernel <kernel@...rdevices.ru>
Subject: Re: [RFC PATCH v2 2/6] hv_sock: always return ENOMEM in case of error
On Fri, Nov 25, 2022 at 05:05:53PM +0000, Arseniy Krasnov wrote:
>From: Bobby Eshleman <bobby.eshleman@...edance.com>
>
>This saves original behaviour from af_vsock.c - switch any error
>code returned from transport layer to ENOMEM.
>
>Signed-off-by: Bobby Eshleman <bobby.eshleman@...edance.com>
>Signed-off-by: Arseniy Krasnov <AVKrasnov@...rdevices.ru>
>---
> net/vmw_vsock/hyperv_transport.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transport.c
>index 59c3e2697069..fbbe55133da2 100644
>--- a/net/vmw_vsock/hyperv_transport.c
>+++ b/net/vmw_vsock/hyperv_transport.c
>@@ -687,7 +687,7 @@ static ssize_t hvs_stream_enqueue(struct vsock_sock *vsk, struct msghdr *msg,
> if (bytes_written)
> ret = bytes_written;
> kfree(send_buf);
>- return ret;
>+ return ret < 0 ? -ENOMEM : ret;
I'm not sure for hyperv we want to preserve -ENOMEM. This transport was
added after virtio-vsock, so I think we can return the error directly.
@Dexuan what do you think?
Thanks,
Stefano
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