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=-18.2 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,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 73EC3C47093 for ; Wed, 2 Jun 2021 02:11:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 588576128A for ; Wed, 2 Jun 2021 02:11:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230384AbhFBCNe (ORCPT ); Tue, 1 Jun 2021 22:13:34 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:39203 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230352AbhFBCNb (ORCPT ); Tue, 1 Jun 2021 22:13:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1622599909; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=lZVFPtcnihzw6Crkb+n7RJjTscY9buzOxvek+kEcgCo=; b=WHfOtdN6xEXu+NkhOZCDMzaKDh50qinjMwWZGhUNolvWVtlWTb+Ax5t4TTBQzZQWgDTsnT OcjwOj3KjjrfYcLJ5yBncR1ica5ZxcS0UL/mLVkPzErLQz4IbHvpJ4OaQwuHNI4CmOiySZ PJhyJSsNyGOPJuXe7dwo/ExXTlwLfwc= Received: from mail-pl1-f198.google.com (mail-pl1-f198.google.com [209.85.214.198]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-343-EXXoaEwUMzuconGWLxW2cg-1; Tue, 01 Jun 2021 22:11:46 -0400 X-MC-Unique: EXXoaEwUMzuconGWLxW2cg-1 Received: by mail-pl1-f198.google.com with SMTP id q18-20020a170902dad2b0290106a6168b68so300297plx.20 for ; Tue, 01 Jun 2021 19:11:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=lZVFPtcnihzw6Crkb+n7RJjTscY9buzOxvek+kEcgCo=; b=coenJFg4F+OjUzMG7LZR35EtyDHJo1V+5sJmOj5dZfXj2Zj9n63sTi9xJomZ70Ez7f hSgwjaTZyyFgLR1fVI/S/bbctqqnS8HACykAisx2Iy/MNf9E4h3fXxUVrdgKiRh9bwGa 0/1YY87hm9yu9KjG5F1tIysuC+Evpw+xkch/4EKVdxR0c4yCRXCYP3NaVdv/yFJFNF0J fib5qBIXZOFSqPa7L9MPqTjG6suv7tt+P1e9ft5WzunqLkqvFjP5lzeQSmpPJozk6j2W +orxepcpUNNCtp7WjFOtI7ZrNXg9RDw+S/HTRCpQEwZlAmSUp/J9XD0sOLD2kfWXgAib exEg== X-Gm-Message-State: AOAM533IC/s7EjjEx5+awHxTJ1kQgRDd6A3jWhUgwTB3C07mbC3QfhM6 RHhiOxFa+xb9ThmWEmS3VhUZ3rgSNRAcXIDwvWeOhnIz7bp7YufW4kT5XdeFqc3vMy4IHAqBUNF hHPTcejfgXuNGs7Jv X-Received: by 2002:a17:90a:9411:: with SMTP id r17mr27751152pjo.49.1622599904795; Tue, 01 Jun 2021 19:11:44 -0700 (PDT) X-Google-Smtp-Source: ABdhPJx7jaPg4i0ubXcEyXL3E/szYzG3vyar8Ms/jhzMDyREusEWUIsRPjx8+473wjnPnqHfhg3W0Q== X-Received: by 2002:a17:90a:9411:: with SMTP id r17mr27751135pjo.49.1622599904510; Tue, 01 Jun 2021 19:11:44 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id w2sm14759633pjq.5.2021.06.01.19.11.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 01 Jun 2021 19:11:43 -0700 (PDT) Subject: Re: [PATCH 1/4] vdpa: support packed virtqueue for set/get_vq_state() To: Eli Cohen Cc: mst@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, netdev@vger.kernel.org, eli@mellanox.com References: <20210601084503.34724-1-jasowang@redhat.com> <20210601084503.34724-2-jasowang@redhat.com> <20210601104711.GD215954@mtl-vdi-166.wap.labs.mlnx> From: Jason Wang Message-ID: Date: Wed, 2 Jun 2021 10:11:36 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: <20210601104711.GD215954@mtl-vdi-166.wap.labs.mlnx> Content-Type: text/plain; charset=gbk; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org ÔÚ 2021/6/1 ÏÂÎç6:47, Eli Cohen дµÀ: > On Tue, Jun 01, 2021 at 04:45:00PM +0800, Jason Wang wrote: >> This patch extends the vdpa_vq_state to support packed virtqueue >> state which is basically the device/driver ring wrap counters and the >> avail and used index. This will be used for the virito-vdpa support >> for the packed virtqueue and the future vhost/vhost-vdpa support for >> the packed virtqueue. >> >> Signed-off-by: Jason Wang > You changed interface but did not modify mlx5. Does this compile on your > system? Yes but I'm using a minimal config without mlx5 enabled :( V2 is posted. Thanks > >> --- >> drivers/vdpa/ifcvf/ifcvf_main.c | 4 ++-- >> drivers/vdpa/vdpa_sim/vdpa_sim.c | 4 ++-- >> drivers/vhost/vdpa.c | 4 ++-- >> include/linux/vdpa.h | 25 +++++++++++++++++++++++-- >> 4 files changed, 29 insertions(+), 8 deletions(-) >> >> diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c >> index ab0ab5cf0f6e..5d3891b1ca28 100644 >> --- a/drivers/vdpa/ifcvf/ifcvf_main.c >> +++ b/drivers/vdpa/ifcvf/ifcvf_main.c >> @@ -264,7 +264,7 @@ static int ifcvf_vdpa_get_vq_state(struct vdpa_device *vdpa_dev, u16 qid, >> { >> struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev); >> >> - state->avail_index = ifcvf_get_vq_state(vf, qid); >> + state->split.avail_index = ifcvf_get_vq_state(vf, qid); >> return 0; >> } >> >> @@ -273,7 +273,7 @@ static int ifcvf_vdpa_set_vq_state(struct vdpa_device *vdpa_dev, u16 qid, >> { >> struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev); >> >> - return ifcvf_set_vq_state(vf, qid, state->avail_index); >> + return ifcvf_set_vq_state(vf, qid, state->split.avail_index); >> } >> >> static void ifcvf_vdpa_set_vq_cb(struct vdpa_device *vdpa_dev, u16 qid, >> diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c >> index 98f793bc9376..14e024de5cbf 100644 >> --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c >> +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c >> @@ -374,7 +374,7 @@ static int vdpasim_set_vq_state(struct vdpa_device *vdpa, u16 idx, >> struct vringh *vrh = &vq->vring; >> >> spin_lock(&vdpasim->lock); >> - vrh->last_avail_idx = state->avail_index; >> + vrh->last_avail_idx = state->split.avail_index; >> spin_unlock(&vdpasim->lock); >> >> return 0; >> @@ -387,7 +387,7 @@ static int vdpasim_get_vq_state(struct vdpa_device *vdpa, u16 idx, >> struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx]; >> struct vringh *vrh = &vq->vring; >> >> - state->avail_index = vrh->last_avail_idx; >> + state->split.avail_index = vrh->last_avail_idx; >> return 0; >> } >> >> diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c >> index fb41db3da611..210ab35a7ebf 100644 >> --- a/drivers/vhost/vdpa.c >> +++ b/drivers/vhost/vdpa.c >> @@ -383,7 +383,7 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd, >> if (r) >> return r; >> >> - vq->last_avail_idx = vq_state.avail_index; >> + vq->last_avail_idx = vq_state.split.avail_index; >> break; >> } >> >> @@ -401,7 +401,7 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd, >> break; >> >> case VHOST_SET_VRING_BASE: >> - vq_state.avail_index = vq->last_avail_idx; >> + vq_state.split.avail_index = vq->last_avail_idx; >> if (ops->set_vq_state(vdpa, idx, &vq_state)) >> r = -EINVAL; >> break; >> diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h >> index f311d227aa1b..3357ac98878d 100644 >> --- a/include/linux/vdpa.h >> +++ b/include/linux/vdpa.h >> @@ -28,13 +28,34 @@ struct vdpa_notification_area { >> }; >> >> /** >> - * struct vdpa_vq_state - vDPA vq_state definition >> + * struct vdpa_vq_state_split - vDPA split virtqueue state >> * @avail_index: available index >> */ >> -struct vdpa_vq_state { >> +struct vdpa_vq_state_split { >> u16 avail_index; >> }; >> >> +/** >> + * struct vdpa_vq_state_packed - vDPA packed virtqueue state >> + * @last_avail_counter: last driver ring wrap counter observed by device >> + * @last_avail_idx: device available index >> + * @last_used_counter: device ring wrap counter >> + * @last_used_idx: used index >> + */ >> +struct vdpa_vq_state_packed { >> + u16 last_avail_counter:1; >> + u16 last_avail_idx:15; >> + u16 last_used_counter:1; >> + u16 last_used_idx:15; >> +}; >> + >> +struct vdpa_vq_state { >> + union { >> + struct vdpa_vq_state_split split; >> + struct vdpa_vq_state_packed packed; >> + }; >> +}; >> + >> struct vdpa_mgmt_dev; >> >> /** >> -- >> 2.25.1 >>