From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E1D6C432BE for ; Mon, 2 Aug 2021 18:35:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5183860F36 for ; Mon, 2 Aug 2021 18:35:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231881AbhHBSfO (ORCPT ); Mon, 2 Aug 2021 14:35:14 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:59926 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232124AbhHBSfL (ORCPT ); Mon, 2 Aug 2021 14:35:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1627929301; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=wminINGDgWcNHoLPUasL8rgS7uCgoeCj4rIW6d1gFd0=; b=YvBg4D6Ok09eOJC7TpSEwFAEQ2FIpkAD3RnFGXJllgtpEvvvY32RT1vEPaP+v9hID1svZ8 IadKbOyRJWI8L53OId502PzHZFsdKqe9b3ZT219OP8kpZrOG124J/W9kmYAeKeXtHkZ1v6 kb346tGfSInQ8X5ngvqAx7EFrrPb2rg= Received: from mail-ej1-f70.google.com (mail-ej1-f70.google.com [209.85.218.70]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-388-sa-sHLhyNgeUZagA4kstnw-1; Mon, 02 Aug 2021 14:35:00 -0400 X-MC-Unique: sa-sHLhyNgeUZagA4kstnw-1 Received: by mail-ej1-f70.google.com with SMTP id rv22-20020a17090710d6b029058c69e3adbbso4989409ejb.6 for ; Mon, 02 Aug 2021 11:35:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=wminINGDgWcNHoLPUasL8rgS7uCgoeCj4rIW6d1gFd0=; b=GJ6WoOKJwNV/SMAoOzXyugFHkAfqEAuL8yJULgPuBU5KfDL0uGo/MRR8+yWXkFLH8g TUm4ODCw8of0SEHq6q5wgWPTgbt2dOsbv+QY7XXNRHfxKXOqplnYIHqjvYD0Yta2lNh4 2Ft/+j0EskkbrLa7fYc8VLfSEhpRK4tYd9H7KSprk0cFreiwOcxBEULF6MUOmA11BYRW Fgani+xjQLKS4mj24600f3KHEPYpEe4Dr1EIcITT9Nle/L50srmTvBhfarqLUUBqTP8V mUAGqFkXgbLRDQrtQQgYs41cqYyYPmUdsuUe5EcBQbQqjs/o7xgdrtYpSOCYVO3nK4Ds MDzQ== X-Gm-Message-State: AOAM531L438dqnftmGmN66y3yEqk2/7yEGrwO61AQdk8n7aiK7ZapMDX LkZaMobw9qEiXmM8lk6SCWtNkSUSb0Oa5uFQdswGCi0CRk9TsIlYGIeWmHJON/OTD1nLfNb/ycl aw+pznzEBVi68T+Julyh/LsJ3 X-Received: by 2002:a50:fb18:: with SMTP id d24mr20985347edq.225.1627929299327; Mon, 02 Aug 2021 11:34:59 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwoCyMdXrDgg3jX2cUmgPnbyHqQZI1zsIxFF27gl9okbIV2OgI+ba2TaS/45evhjSuB8kSK5g== X-Received: by 2002:a50:fb18:: with SMTP id d24mr20985334edq.225.1627929299147; Mon, 02 Aug 2021 11:34:59 -0700 (PDT) Received: from steredhat (host-79-18-148-79.retail.telecomitalia.it. [79.18.148.79]) by smtp.gmail.com with ESMTPSA id n13sm6705376eda.36.2021.08.02.11.34.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Aug 2021 11:34:58 -0700 (PDT) Date: Mon, 2 Aug 2021 20:34:56 +0200 From: Stefano Garzarella To: Harshavardhan Unnibhavi Cc: stefanha@redhat.com, davem@davemloft.net, kuba@kernel.org, asias@redhat.com, mst@redhat.com, imbrenda@linux.vnet.ibm.com, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net] VSOCK: handle VIRTIO_VSOCK_OP_CREDIT_REQUEST Message-ID: <20210802183456.zvr6raqtgwrm3s52@steredhat> References: <20210802173506.2383-1-harshanavkis@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20210802173506.2383-1-harshanavkis@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 02, 2021 at 07:35:06PM +0200, Harshavardhan Unnibhavi wrote: >The original implementation of the virtio-vsock driver does not >handle a VIRTIO_VSOCK_OP_CREDIT_REQUEST as required by the >virtio-vsock specification. The vsock device emulated by >vhost-vsock and the virtio-vsock driver never uses this request, >which was probably why nobody noticed it. However, another >implementation of the device may use this request type. > >Hence, this commit introduces a way to handle an explicit credit >request by responding with a corresponding credit update as >required by the virtio-vsock specification. > >Fixes: 06a8fc78367d ("VSOCK: Introduce virtio_vsock_common.ko") > >Signed-off-by: Harshavardhan Unnibhavi >--- > net/vmw_vsock/virtio_transport_common.c | 3 +++ > 1 file changed, 3 insertions(+) > >diff --git a/net/vmw_vsock/virtio_transport_common.c >b/net/vmw_vsock/virtio_transport_common.c >index 169ba8b72a63..081e7ae93cb1 100644 >--- a/net/vmw_vsock/virtio_transport_common.c >+++ b/net/vmw_vsock/virtio_transport_common.c >@@ -1079,6 +1079,9 @@ virtio_transport_recv_connected(struct sock *sk, > virtio_transport_recv_enqueue(vsk, pkt); > sk->sk_data_ready(sk); > return err; >+ case VIRTIO_VSOCK_OP_CREDIT_REQUEST: >+ virtio_transport_send_credit_update(vsk); >+ break; > case VIRTIO_VSOCK_OP_CREDIT_UPDATE: > sk->sk_write_space(sk); > break; >-- 2.17.1 > The patch LGTM, thanks for fixing this long-time issue! Reviewed-by: Stefano Garzarella