From patchwork Tue Mar 12 02:10:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xuan Zhuo X-Patchwork-Id: 13589465 Received: from out30-110.freemail.mail.aliyun.com (out30-110.freemail.mail.aliyun.com [115.124.30.110]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1B9886FA8; Tue, 12 Mar 2024 02:10:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.110 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710209427; cv=none; b=hrPQ0g6XpHmP1uLj3amJcelVdVsset+CefuVql5aaltCLpOwVPrFtaYMHm44jDyB73RMMQGKKiF+tNMt+Ul134E4IM0Ejgbpvd5dgXTiFgibKnalkvqEInFVof172XFoFZKEsT5qH/MEXkzV0UkmgagfDENhPJyjSSI2ymH3B+4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710209427; c=relaxed/simple; bh=VH2NnI3whcbRVOJQYJEwbEmXh5FU+JG4V3KHXD24YYo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=atj7kw83IE0aK72mgTwga7HNNEsyb0/F4SebebUWtZksnU1y9rKi1Fq5zGHnunDSs4+2JsGrJBKx8B9rMsJ2Y/+swc8TsJK9R9EZjXRWYGdz+eqKMlgj0QqHxlA5w14AdDhiOo/2wOeZ/WYFTn6qUERsjahClVH5MauyxjzMDCc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=ki55+5ff; arc=none smtp.client-ip=115.124.30.110 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="ki55+5ff" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1710209422; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=laBHY5qVFBbYCcttAEKZ67DNxV+MUIYNzZWIb9yC5JM=; b=ki55+5ffW8NVvSrcOcBQ+PHuP3k0/tck9CZf2JtbyBsJaOcIXBDqxbH4EkCURAi1f2qbGlI/zsowiDDsi/idu4MSiXar0SWGOt56lQXwmxvSdqcHfuGckW6wVJQk36PqwmCJxvpy1UxtXHWLB7F7zmG7CW3F5JWpmC25a/SmK+w= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R231e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045192;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=25;SR=0;TI=SMTPD_---0W2JwVTi_1710209419; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0W2JwVTi_1710209419) by smtp.aliyun-inc.com; Tue, 12 Mar 2024 10:10:20 +0800 From: Xuan Zhuo To: virtualization@lists.linux.dev Cc: Richard Weinberger , Anton Ivanov , Johannes Berg , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Vadim Pasternak , Bjorn Andersson , Mathieu Poirier , Cornelia Huck , Halil Pasic , Eric Farman , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , linux-um@lists.infradead.org, platform-driver-x86@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org Subject: [PATCH vhost v3 4/4] virtio_ring: simplify the parameters of the funcs related to vring_create/new_virtqueue() Date: Tue, 12 Mar 2024 10:10:13 +0800 Message-Id: <20240312021013.88656-5-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.32.0.3.g01195cf9f In-Reply-To: <20240312021013.88656-1-xuanzhuo@linux.alibaba.com> References: <20240312021013.88656-1-xuanzhuo@linux.alibaba.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Git-Hash: 8d1a4cfe2924 As the refactor of find_vqs()/vring_new_virtqueue()/vring_create_virtqueue the struct cfg/tp_cfg are passed to vring. This patch refactors the vring by these structures. This can simplify the code. Signed-off-by: Xuan Zhuo Reviewed-by: Ilpo J=E4rvinen --- drivers/virtio/virtio_ring.c | 157 +++++++++++------------------------ 1 file changed, 50 insertions(+), 107 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 03687800d8ff..94c442ba844f 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -223,15 +223,11 @@ struct vring_virtqueue { #endif }; -static struct virtqueue *__vring_new_virtqueue(unsigned int index, +static struct virtqueue *__vring_new_virtqueue(struct virtio_device *vdev, + unsigned int index, struct vring_virtqueue_split *vring_split, - struct virtio_device *vdev, - bool weak_barriers, - bool context, - bool (*notify)(struct virtqueue *), - void (*callback)(struct virtqueue *), - const char *name, - struct device *dma_dev); + struct vq_transport_config *tp_cfg, + struct virtio_vq_config *cfg); static struct vring_desc_extra *vring_alloc_desc_extra(unsigned int num); static void vring_free(struct virtqueue *_vq); @@ -240,6 +236,8 @@ static void vring_free(struct virtqueue *_vq); */ #define to_vvq(_vq) container_of_const(_vq, struct vring_virtqueue, vq) +#define cfg_vq_val(cfg, key) (cfg->key[cfg->cfg_idx]) +#define cfg_vq_get(cfg, key) (cfg->key ? cfg_vq_val(cfg, key) : false) static bool virtqueue_use_indirect(const struct vring_virtqueue *vq, unsigned int total_sg) @@ -1138,32 +1136,28 @@ static int vring_alloc_queue_split(struct vring_virtqueue_split *vring_split, return 0; } -static struct virtqueue *vring_create_virtqueue_split( - unsigned int index, - unsigned int num, - unsigned int vring_align, - struct virtio_device *vdev, - bool weak_barriers, - bool may_reduce_num, - bool context, - bool (*notify)(struct virtqueue *), - void (*callback)(struct virtqueue *), - const char *name, - struct device *dma_dev) +static struct virtqueue *vring_create_virtqueue_split(struct virtio_device *vdev, + unsigned int index, + struct vq_transport_config *tp_cfg, + struct virtio_vq_config *cfg) { struct vring_virtqueue_split vring_split = {}; struct virtqueue *vq; int err; - err = vring_alloc_queue_split(&vring_split, vdev, num, vring_align, - may_reduce_num, dma_dev); + tp_cfg->dma_dev = tp_cfg->dma_dev ? : vdev->dev.parent; + + err = vring_alloc_queue_split(&vring_split, vdev, + tp_cfg->num, + tp_cfg->vring_align, + tp_cfg->may_reduce_num, + tp_cfg->dma_dev); if (err) return NULL; - vq = __vring_new_virtqueue(index, &vring_split, vdev, weak_barriers, - context, notify, callback, name, dma_dev); + vq = __vring_new_virtqueue(vdev, index, &vring_split, tp_cfg, cfg); if (!vq) { - vring_free_split(&vring_split, vdev, dma_dev); + vring_free_split(&vring_split, vdev, tp_cfg->dma_dev); return NULL; } @@ -2050,38 +2044,33 @@ static void virtqueue_reinit_packed(struct vring_virtqueue *vq) virtqueue_vring_init_packed(&vq->packed, !!vq->vq.callback); } -static struct virtqueue *vring_create_virtqueue_packed( - unsigned int index, - unsigned int num, - unsigned int vring_align, - struct virtio_device *vdev, - bool weak_barriers, - bool may_reduce_num, - bool context, - bool (*notify)(struct virtqueue *), - void (*callback)(struct virtqueue *), - const char *name, - struct device *dma_dev) +static struct virtqueue *vring_create_virtqueue_packed(struct virtio_device *vdev, + unsigned int index, + struct vq_transport_config *tp_cfg, + struct virtio_vq_config *cfg) { struct vring_virtqueue_packed vring_packed = {}; struct vring_virtqueue *vq; + struct device *dma_dev; int err; - if (vring_alloc_queue_packed(&vring_packed, vdev, num, dma_dev)) + dma_dev = tp_cfg->dma_dev ? : vdev->dev.parent; + + if (vring_alloc_queue_packed(&vring_packed, vdev, tp_cfg->num, dma_dev)) goto err_ring; vq = kmalloc(sizeof(*vq), GFP_KERNEL); if (!vq) goto err_vq; - vq->vq.callback = callback; + vq->vq.callback = cfg_vq_val(cfg, callbacks); vq->vq.vdev = vdev; - vq->vq.name = name; + vq->vq.name = cfg_vq_val(cfg, names); vq->vq.index = index; vq->vq.reset = false; vq->we_own_ring = true; - vq->notify = notify; - vq->weak_barriers = weak_barriers; + vq->notify = tp_cfg->notify; + vq->weak_barriers = tp_cfg->weak_barriers; #ifdef CONFIG_VIRTIO_HARDEN_NOTIFICATION vq->broken = true; #else @@ -2094,7 +2083,7 @@ static struct virtqueue *vring_create_virtqueue_packed( vq->do_unmap = vq->use_dma_api; vq->indirect = virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC) && - !context; + !cfg_vq_get(cfg, ctx); vq->event = virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX); if (virtio_has_feature(vdev, VIRTIO_F_ORDER_PLATFORM)) @@ -2104,9 +2093,9 @@ static struct virtqueue *vring_create_virtqueue_packed( if (err) goto err_state_extra; - virtqueue_vring_init_packed(&vring_packed, !!callback); + virtqueue_vring_init_packed(&vring_packed, !!cfg_vq_val(cfg, callbacks)); - virtqueue_init(vq, num); + virtqueue_init(vq, tp_cfg->num); virtqueue_vring_attach_packed(vq, &vring_packed); spin_lock(&vdev->vqs_list_lock); @@ -2599,15 +2588,11 @@ irqreturn_t vring_interrupt(int irq, void *_vq) EXPORT_SYMBOL_GPL(vring_interrupt); /* Only available for split ring */ -static struct virtqueue *__vring_new_virtqueue(unsigned int index, +static struct virtqueue *__vring_new_virtqueue(struct virtio_device *vdev, + unsigned int index, struct vring_virtqueue_split *vring_split, - struct virtio_device *vdev, - bool weak_barriers, - bool context, - bool (*notify)(struct virtqueue *), - void (*callback)(struct virtqueue *), - const char *name, - struct device *dma_dev) + struct vq_transport_config *tp_cfg, + struct virtio_vq_config *cfg) { struct vring_virtqueue *vq; int err; @@ -2620,26 +2605,26 @@ static struct virtqueue *__vring_new_virtqueue(unsigned int index, return NULL; vq->packed_ring = false; - vq->vq.callback = callback; + vq->vq.callback = cfg_vq_val(cfg, callbacks); vq->vq.vdev = vdev; - vq->vq.name = name; + vq->vq.name = cfg_vq_val(cfg, names); vq->vq.index = index; vq->vq.reset = false; vq->we_own_ring = false; - vq->notify = notify; - vq->weak_barriers = weak_barriers; + vq->notify = tp_cfg->notify; + vq->weak_barriers = tp_cfg->weak_barriers; #ifdef CONFIG_VIRTIO_HARDEN_NOTIFICATION vq->broken = true; #else vq->broken = false; #endif - vq->dma_dev = dma_dev; + vq->dma_dev = tp_cfg->dma_dev; vq->use_dma_api = vring_use_dma_api(vdev); vq->premapped = false; vq->do_unmap = vq->use_dma_api; vq->indirect = virtio_has_feature(vdev, VIRTIO_RING_F_INDIRECT_DESC) && - !context; + !cfg_vq_get(cfg, ctx); vq->event = virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX); if (virtio_has_feature(vdev, VIRTIO_F_ORDER_PLATFORM)) @@ -2667,36 +2652,10 @@ struct virtqueue *vring_create_virtqueue(struct virtio_device *vdev, struct vq_transport_config *tp_cfg, struct virtio_vq_config *cfg) { - struct device *dma_dev; - unsigned int num; - unsigned int vring_align; - bool weak_barriers; - bool may_reduce_num; - bool context; - bool (*notify)(struct virtqueue *_); - void (*callback)(struct virtqueue *_); - const char *name; - - dma_dev = tp_cfg->dma_dev ? : vdev->dev.parent; - - num = tp_cfg->num; - vring_align = tp_cfg->vring_align; - weak_barriers = tp_cfg->weak_barriers; - may_reduce_num = tp_cfg->may_reduce_num; - notify = tp_cfg->notify; - - name = cfg->names[cfg->cfg_idx]; - callback = cfg->callbacks[cfg->cfg_idx]; - context = cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false; - if (virtio_has_feature(vdev, VIRTIO_F_RING_PACKED)) - return vring_create_virtqueue_packed(index, num, vring_align, - vdev, weak_barriers, may_reduce_num, - context, notify, callback, name, dma_dev); + return vring_create_virtqueue_packed(vdev, index, tp_cfg, cfg); - return vring_create_virtqueue_split(index, num, vring_align, - vdev, weak_barriers, may_reduce_num, - context, notify, callback, name, dma_dev); + return vring_create_virtqueue_split(vdev, index, tp_cfg, cfg); } EXPORT_SYMBOL_GPL(vring_create_virtqueue); @@ -2842,30 +2801,14 @@ struct virtqueue *vring_new_virtqueue(struct virtio_device *vdev, struct virtio_vq_config *cfg) { struct vring_virtqueue_split vring_split = {}; - unsigned int num; - unsigned int vring_align; - bool weak_barriers; - bool context; - bool (*notify)(struct virtqueue *_); - void (*callback)(struct virtqueue *_); - const char *name; - - num = tp_cfg->num; - vring_align = tp_cfg->vring_align; - weak_barriers = tp_cfg->weak_barriers; - notify = tp_cfg->notify; - - name = cfg->names[cfg->cfg_idx]; - callback = cfg->callbacks[cfg->cfg_idx]; - context = cfg->ctx ? cfg->ctx[cfg->cfg_idx] : false; if (virtio_has_feature(vdev, VIRTIO_F_RING_PACKED)) return NULL; - vring_init(&vring_split.vring, num, pages, vring_align); - return __vring_new_virtqueue(index, &vring_split, vdev, weak_barriers, - context, notify, callback, name, - vdev->dev.parent); + tp_cfg->dma_dev = vdev->dev.parent; + + vring_init(&vring_split.vring, tp_cfg->num, pages, tp_cfg->vring_align); + return __vring_new_virtqueue(vdev, index, &vring_split, tp_cfg, cfg); } EXPORT_SYMBOL_GPL(vring_new_virtqueue);