From patchwork Tue Dec 4 11:07:56 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 203609 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 9A8E12C0094 for ; Tue, 4 Dec 2012 22:17:13 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752484Ab2LDLQS (ORCPT ); Tue, 4 Dec 2012 06:16:18 -0500 Received: from mx1.redhat.com ([209.132.183.28]:30455 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752422Ab2LDLQN (ORCPT ); Tue, 4 Dec 2012 06:16:13 -0500 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id qB4BG1hM003193 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 4 Dec 2012 06:16:01 -0500 Received: from amd-6168-8-1.englab.nay.redhat.com (amd-6168-8-1.englab.nay.redhat.com [10.66.104.52]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id qB4BFqbu004551; Tue, 4 Dec 2012 06:15:57 -0500 From: Jason Wang To: rusty@rustcorp.com.au, mst@redhat.com, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, davem@davemloft.net Cc: krkumar2@in.ibm.com, kvm@vger.kernel.org, bhutchings@solarflare.com, jwhan@filewood.snu.ac.kr, shiyer@redhat.com, Jason Wang Subject: [PATCH net-next 1/3] virtio-net: separate fields of sending/receiving queue from virtnet_info Date: Tue, 4 Dec 2012 19:07:56 +0800 Message-Id: <1354619278-35702-2-git-send-email-jasowang@redhat.com> In-Reply-To: <1354619278-35702-1-git-send-email-jasowang@redhat.com> References: <1354619278-35702-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org To support multiqueue transmitq/receiveq, the first step is to separate queue related structure from virtnet_info. This patch introduce send_queue and receive_queue structure and use the pointer to them as the parameter in functions handling sending/receiving. Signed-off-by: Krishna Kumar Signed-off-by: Jason Wang --- drivers/net/virtio_net.c | 271 +++++++++++++++++++++++++--------------------- 1 files changed, 149 insertions(+), 122 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 8262232..266f712 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -51,16 +51,40 @@ struct virtnet_stats { u64 rx_packets; }; -struct virtnet_info { - struct virtio_device *vdev; - struct virtqueue *rvq, *svq, *cvq; - struct net_device *dev; +/* Internal representation of a send virtqueue */ +struct send_queue { + /* Virtqueue associated with this send _queue */ + struct virtqueue *vq; + + /* TX: fragments + linear part + virtio header */ + struct scatterlist sg[MAX_SKB_FRAGS + 2]; +}; + +/* Internal representation of a receive virtqueue */ +struct receive_queue { + /* Virtqueue associated with this receive_queue */ + struct virtqueue *vq; + struct napi_struct napi; - unsigned int status; /* Number of input buffers, and max we've ever had. */ unsigned int num, max; + /* Chain pages by the private ptr. */ + struct page *pages; + + /* RX: fragments + linear part + virtio header */ + struct scatterlist sg[MAX_SKB_FRAGS + 2]; +}; + +struct virtnet_info { + struct virtio_device *vdev; + struct virtqueue *cvq; + struct net_device *dev; + struct send_queue sq; + struct receive_queue rq; + unsigned int status; + /* I like... big packets and I cannot lie! */ bool big_packets; @@ -81,13 +105,6 @@ struct virtnet_info { /* Lock for config space updates */ struct mutex config_lock; - - /* Chain pages by the private ptr. */ - struct page *pages; - - /* fragments + linear part + virtio header */ - struct scatterlist rx_sg[MAX_SKB_FRAGS + 2]; - struct scatterlist tx_sg[MAX_SKB_FRAGS + 2]; }; struct skb_vnet_hdr { @@ -117,22 +134,22 @@ static inline struct skb_vnet_hdr *skb_vnet_hdr(struct sk_buff *skb) * private is used to chain pages for big packets, put the whole * most recent used list in the beginning for reuse */ -static void give_pages(struct virtnet_info *vi, struct page *page) +static void give_pages(struct receive_queue *rq, struct page *page) { struct page *end; - /* Find end of list, sew whole thing into vi->pages. */ + /* Find end of list, sew whole thing into vi->rq.pages. */ for (end = page; end->private; end = (struct page *)end->private); - end->private = (unsigned long)vi->pages; - vi->pages = page; + end->private = (unsigned long)rq->pages; + rq->pages = page; } -static struct page *get_a_page(struct virtnet_info *vi, gfp_t gfp_mask) +static struct page *get_a_page(struct receive_queue *rq, gfp_t gfp_mask) { - struct page *p = vi->pages; + struct page *p = rq->pages; if (p) { - vi->pages = (struct page *)p->private; + rq->pages = (struct page *)p->private; /* clear private here, it is used to chain pages */ p->private = 0; } else @@ -140,12 +157,12 @@ static struct page *get_a_page(struct virtnet_info *vi, gfp_t gfp_mask) return p; } -static void skb_xmit_done(struct virtqueue *svq) +static void skb_xmit_done(struct virtqueue *vq) { - struct virtnet_info *vi = svq->vdev->priv; + struct virtnet_info *vi = vq->vdev->priv; /* Suppress further interrupts. */ - virtqueue_disable_cb(svq); + virtqueue_disable_cb(vq); /* We were probably waiting for more output buffers. */ netif_wake_queue(vi->dev); @@ -167,9 +184,10 @@ static void set_skb_frag(struct sk_buff *skb, struct page *page, } /* Called from bottom half context */ -static struct sk_buff *page_to_skb(struct virtnet_info *vi, +static struct sk_buff *page_to_skb(struct receive_queue *rq, struct page *page, unsigned int len) { + struct virtnet_info *vi = rq->vq->vdev->priv; struct sk_buff *skb; struct skb_vnet_hdr *hdr; unsigned int copy, hdr_len, offset; @@ -224,12 +242,12 @@ static struct sk_buff *page_to_skb(struct virtnet_info *vi, } if (page) - give_pages(vi, page); + give_pages(rq, page); return skb; } -static int receive_mergeable(struct virtnet_info *vi, struct sk_buff *skb) +static int receive_mergeable(struct receive_queue *rq, struct sk_buff *skb) { struct skb_vnet_hdr *hdr = skb_vnet_hdr(skb); struct page *page; @@ -243,7 +261,7 @@ static int receive_mergeable(struct virtnet_info *vi, struct sk_buff *skb) skb->dev->stats.rx_length_errors++; return -EINVAL; } - page = virtqueue_get_buf(vi->rvq, &len); + page = virtqueue_get_buf(rq->vq, &len); if (!page) { pr_debug("%s: rx error: %d buffers missing\n", skb->dev->name, hdr->mhdr.num_buffers); @@ -256,14 +274,15 @@ static int receive_mergeable(struct virtnet_info *vi, struct sk_buff *skb) set_skb_frag(skb, page, 0, &len); - --vi->num; + --rq->num; } return 0; } -static void receive_buf(struct net_device *dev, void *buf, unsigned int len) +static void receive_buf(struct receive_queue *rq, void *buf, unsigned int len) { - struct virtnet_info *vi = netdev_priv(dev); + struct virtnet_info *vi = rq->vq->vdev->priv; + struct net_device *dev = vi->dev; struct virtnet_stats *stats = this_cpu_ptr(vi->stats); struct sk_buff *skb; struct page *page; @@ -273,7 +292,7 @@ static void receive_buf(struct net_device *dev, void *buf, unsigned int len) pr_debug("%s: short packet %i\n", dev->name, len); dev->stats.rx_length_errors++; if (vi->mergeable_rx_bufs || vi->big_packets) - give_pages(vi, buf); + give_pages(rq, buf); else dev_kfree_skb(buf); return; @@ -285,14 +304,14 @@ static void receive_buf(struct net_device *dev, void *buf, unsigned int len) skb_trim(skb, len); } else { page = buf; - skb = page_to_skb(vi, page, len); + skb = page_to_skb(rq, page, len); if (unlikely(!skb)) { dev->stats.rx_dropped++; - give_pages(vi, page); + give_pages(rq, page); return; } if (vi->mergeable_rx_bufs) - if (receive_mergeable(vi, skb)) { + if (receive_mergeable(rq, skb)) { dev_kfree_skb(skb); return; } @@ -359,8 +378,9 @@ frame_err: dev_kfree_skb(skb); } -static int add_recvbuf_small(struct virtnet_info *vi, gfp_t gfp) +static int add_recvbuf_small(struct receive_queue *rq, gfp_t gfp) { + struct virtnet_info *vi = rq->vq->vdev->priv; struct sk_buff *skb; struct skb_vnet_hdr *hdr; int err; @@ -372,77 +392,77 @@ static int add_recvbuf_small(struct virtnet_info *vi, gfp_t gfp) skb_put(skb, MAX_PACKET_LEN); hdr = skb_vnet_hdr(skb); - sg_set_buf(vi->rx_sg, &hdr->hdr, sizeof hdr->hdr); + sg_set_buf(rq->sg, &hdr->hdr, sizeof hdr->hdr); - skb_to_sgvec(skb, vi->rx_sg + 1, 0, skb->len); + skb_to_sgvec(skb, rq->sg + 1, 0, skb->len); - err = virtqueue_add_buf(vi->rvq, vi->rx_sg, 0, 2, skb, gfp); + err = virtqueue_add_buf(rq->vq, rq->sg, 0, 2, skb, gfp); if (err < 0) dev_kfree_skb(skb); return err; } -static int add_recvbuf_big(struct virtnet_info *vi, gfp_t gfp) +static int add_recvbuf_big(struct receive_queue *rq, gfp_t gfp) { struct page *first, *list = NULL; char *p; int i, err, offset; - /* page in vi->rx_sg[MAX_SKB_FRAGS + 1] is list tail */ + /* page in rq->sg[MAX_SKB_FRAGS + 1] is list tail */ for (i = MAX_SKB_FRAGS + 1; i > 1; --i) { - first = get_a_page(vi, gfp); + first = get_a_page(rq, gfp); if (!first) { if (list) - give_pages(vi, list); + give_pages(rq, list); return -ENOMEM; } - sg_set_buf(&vi->rx_sg[i], page_address(first), PAGE_SIZE); + sg_set_buf(&rq->sg[i], page_address(first), PAGE_SIZE); /* chain new page in list head to match sg */ first->private = (unsigned long)list; list = first; } - first = get_a_page(vi, gfp); + first = get_a_page(rq, gfp); if (!first) { - give_pages(vi, list); + give_pages(rq, list); return -ENOMEM; } p = page_address(first); - /* vi->rx_sg[0], vi->rx_sg[1] share the same page */ - /* a separated vi->rx_sg[0] for virtio_net_hdr only due to QEMU bug */ - sg_set_buf(&vi->rx_sg[0], p, sizeof(struct virtio_net_hdr)); + /* rq->sg[0], rq->sg[1] share the same page */ + /* a separated rq->sg[0] for virtio_net_hdr only due to QEMU bug */ + sg_set_buf(&rq->sg[0], p, sizeof(struct virtio_net_hdr)); - /* vi->rx_sg[1] for data packet, from offset */ + /* rq->sg[1] for data packet, from offset */ offset = sizeof(struct padded_vnet_hdr); - sg_set_buf(&vi->rx_sg[1], p + offset, PAGE_SIZE - offset); + sg_set_buf(&rq->sg[1], p + offset, PAGE_SIZE - offset); /* chain first in list head */ first->private = (unsigned long)list; - err = virtqueue_add_buf(vi->rvq, vi->rx_sg, 0, MAX_SKB_FRAGS + 2, + err = virtqueue_add_buf(rq->vq, rq->sg, 0, MAX_SKB_FRAGS + 2, first, gfp); if (err < 0) - give_pages(vi, first); + give_pages(rq, first); return err; } -static int add_recvbuf_mergeable(struct virtnet_info *vi, gfp_t gfp) +static int add_recvbuf_mergeable(struct receive_queue *rq, gfp_t gfp) { struct page *page; int err; - page = get_a_page(vi, gfp); + page = get_a_page(rq, gfp); if (!page) return -ENOMEM; - sg_init_one(vi->rx_sg, page_address(page), PAGE_SIZE); + sg_init_one(rq->sg, page_address(page), PAGE_SIZE); - err = virtqueue_add_buf(vi->rvq, vi->rx_sg, 0, 1, page, gfp); + err = virtqueue_add_buf(rq->vq, rq->sg, 0, 1, page, gfp); if (err < 0) - give_pages(vi, page); + give_pages(rq, page); return err; } @@ -454,65 +474,68 @@ static int add_recvbuf_mergeable(struct virtnet_info *vi, gfp_t gfp) * before we're receiving packets, or from refill_work which is * careful to disable receiving (using napi_disable). */ -static bool try_fill_recv(struct virtnet_info *vi, gfp_t gfp) +static bool try_fill_recv(struct receive_queue *rq, gfp_t gfp) { + struct virtnet_info *vi = rq->vq->vdev->priv; int err; bool oom; do { if (vi->mergeable_rx_bufs) - err = add_recvbuf_mergeable(vi, gfp); + err = add_recvbuf_mergeable(rq, gfp); else if (vi->big_packets) - err = add_recvbuf_big(vi, gfp); + err = add_recvbuf_big(rq, gfp); else - err = add_recvbuf_small(vi, gfp); + err = add_recvbuf_small(rq, gfp); oom = err == -ENOMEM; if (err < 0) break; - ++vi->num; + ++rq->num; } while (err > 0); - if (unlikely(vi->num > vi->max)) - vi->max = vi->num; - virtqueue_kick(vi->rvq); + if (unlikely(rq->num > rq->max)) + rq->max = rq->num; + virtqueue_kick(rq->vq); return !oom; } static void skb_recv_done(struct virtqueue *rvq) { struct virtnet_info *vi = rvq->vdev->priv; + struct receive_queue *rq = &vi->rq; + /* Schedule NAPI, Suppress further interrupts if successful. */ - if (napi_schedule_prep(&vi->napi)) { + if (napi_schedule_prep(&rq->napi)) { virtqueue_disable_cb(rvq); - __napi_schedule(&vi->napi); + __napi_schedule(&rq->napi); } } -static void virtnet_napi_enable(struct virtnet_info *vi) +static void virtnet_napi_enable(struct receive_queue *rq) { - napi_enable(&vi->napi); + napi_enable(&rq->napi); /* If all buffers were filled by other side before we napi_enabled, we * won't get another interrupt, so process any outstanding packets * now. virtnet_poll wants re-enable the queue, so we disable here. * We synchronize against interrupts via NAPI_STATE_SCHED */ - if (napi_schedule_prep(&vi->napi)) { - virtqueue_disable_cb(vi->rvq); + if (napi_schedule_prep(&rq->napi)) { + virtqueue_disable_cb(rq->vq); local_bh_disable(); - __napi_schedule(&vi->napi); + __napi_schedule(&rq->napi); local_bh_enable(); } } static void refill_work(struct work_struct *work) { - struct virtnet_info *vi; + struct virtnet_info *vi = + container_of(work, struct virtnet_info, refill.work); bool still_empty; - vi = container_of(work, struct virtnet_info, refill.work); - napi_disable(&vi->napi); - still_empty = !try_fill_recv(vi, GFP_KERNEL); - virtnet_napi_enable(vi); + napi_disable(&vi->rq.napi); + still_empty = !try_fill_recv(&vi->rq, GFP_KERNEL); + virtnet_napi_enable(&vi->rq); /* In theory, this can happen: if we don't get any buffers in * we will *never* try to fill again. */ @@ -522,29 +545,31 @@ static void refill_work(struct work_struct *work) static int virtnet_poll(struct napi_struct *napi, int budget) { - struct virtnet_info *vi = container_of(napi, struct virtnet_info, napi); + struct receive_queue *rq = + container_of(napi, struct receive_queue, napi); + struct virtnet_info *vi = rq->vq->vdev->priv; void *buf; unsigned int len, received = 0; again: while (received < budget && - (buf = virtqueue_get_buf(vi->rvq, &len)) != NULL) { - receive_buf(vi->dev, buf, len); - --vi->num; + (buf = virtqueue_get_buf(rq->vq, &len)) != NULL) { + receive_buf(rq, buf, len); + --rq->num; received++; } - if (vi->num < vi->max / 2) { - if (!try_fill_recv(vi, GFP_ATOMIC)) + if (rq->num < rq->max / 2) { + if (!try_fill_recv(rq, GFP_ATOMIC)) schedule_delayed_work(&vi->refill, 0); } /* Out of packets? */ if (received < budget) { napi_complete(napi); - if (unlikely(!virtqueue_enable_cb(vi->rvq)) && + if (unlikely(!virtqueue_enable_cb(rq->vq)) && napi_schedule_prep(napi)) { - virtqueue_disable_cb(vi->rvq); + virtqueue_disable_cb(rq->vq); __napi_schedule(napi); goto again; } @@ -553,13 +578,14 @@ again: return received; } -static unsigned int free_old_xmit_skbs(struct virtnet_info *vi) +static unsigned int free_old_xmit_skbs(struct send_queue *sq) { struct sk_buff *skb; unsigned int len, tot_sgs = 0; + struct virtnet_info *vi = sq->vq->vdev->priv; struct virtnet_stats *stats = this_cpu_ptr(vi->stats); - while ((skb = virtqueue_get_buf(vi->svq, &len)) != NULL) { + while ((skb = virtqueue_get_buf(sq->vq, &len)) != NULL) { pr_debug("Sent skb %p\n", skb); u64_stats_update_begin(&stats->tx_syncp); @@ -573,10 +599,11 @@ static unsigned int free_old_xmit_skbs(struct virtnet_info *vi) return tot_sgs; } -static int xmit_skb(struct virtnet_info *vi, struct sk_buff *skb) +static int xmit_skb(struct send_queue *sq, struct sk_buff *skb) { struct skb_vnet_hdr *hdr = skb_vnet_hdr(skb); const unsigned char *dest = ((struct ethhdr *)skb->data)->h_dest; + struct virtnet_info *vi = sq->vq->vdev->priv; pr_debug("%s: xmit %p %pM\n", vi->dev->name, skb, dest); @@ -611,25 +638,26 @@ static int xmit_skb(struct virtnet_info *vi, struct sk_buff *skb) /* Encode metadata header at front. */ if (vi->mergeable_rx_bufs) - sg_set_buf(vi->tx_sg, &hdr->mhdr, sizeof hdr->mhdr); + sg_set_buf(sq->sg, &hdr->mhdr, sizeof hdr->mhdr); else - sg_set_buf(vi->tx_sg, &hdr->hdr, sizeof hdr->hdr); + sg_set_buf(sq->sg, &hdr->hdr, sizeof hdr->hdr); - hdr->num_sg = skb_to_sgvec(skb, vi->tx_sg + 1, 0, skb->len) + 1; - return virtqueue_add_buf(vi->svq, vi->tx_sg, hdr->num_sg, + hdr->num_sg = skb_to_sgvec(skb, sq->sg + 1, 0, skb->len) + 1; + return virtqueue_add_buf(sq->vq, sq->sg, hdr->num_sg, 0, skb, GFP_ATOMIC); } static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev) { struct virtnet_info *vi = netdev_priv(dev); + struct send_queue *sq = &vi->sq; int capacity; /* Free up any pending old buffers before queueing new ones. */ - free_old_xmit_skbs(vi); + free_old_xmit_skbs(sq); /* Try to transmit */ - capacity = xmit_skb(vi, skb); + capacity = xmit_skb(sq, skb); /* This can happen with OOM and indirect buffers. */ if (unlikely(capacity < 0)) { @@ -648,7 +676,7 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev) kfree_skb(skb); return NETDEV_TX_OK; } - virtqueue_kick(vi->svq); + virtqueue_kick(sq->vq); /* Don't wait up for transmitted skbs to be freed. */ skb_orphan(skb); @@ -658,12 +686,12 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev) * before it gets out of hand. Naturally, this wastes entries. */ if (capacity < 2+MAX_SKB_FRAGS) { netif_stop_queue(dev); - if (unlikely(!virtqueue_enable_cb_delayed(vi->svq))) { + if (unlikely(!virtqueue_enable_cb_delayed(sq->vq))) { /* More just got used, free them then recheck. */ - capacity += free_old_xmit_skbs(vi); + capacity += free_old_xmit_skbs(sq); if (capacity >= 2+MAX_SKB_FRAGS) { netif_start_queue(dev); - virtqueue_disable_cb(vi->svq); + virtqueue_disable_cb(sq->vq); } } } @@ -731,7 +759,7 @@ static void virtnet_netpoll(struct net_device *dev) { struct virtnet_info *vi = netdev_priv(dev); - napi_schedule(&vi->napi); + napi_schedule(&vi->rq.napi); } #endif @@ -740,10 +768,10 @@ static int virtnet_open(struct net_device *dev) struct virtnet_info *vi = netdev_priv(dev); /* Make sure we have some buffers: if oom use wq. */ - if (!try_fill_recv(vi, GFP_KERNEL)) + if (!try_fill_recv(&vi->rq, GFP_KERNEL)) schedule_delayed_work(&vi->refill, 0); - virtnet_napi_enable(vi); + virtnet_napi_enable(&vi->rq); return 0; } @@ -808,7 +836,7 @@ static int virtnet_close(struct net_device *dev) /* Make sure refill_work doesn't re-enable napi! */ cancel_delayed_work_sync(&vi->refill); - napi_disable(&vi->napi); + napi_disable(&vi->rq.napi); return 0; } @@ -920,11 +948,10 @@ static void virtnet_get_ringparam(struct net_device *dev, { struct virtnet_info *vi = netdev_priv(dev); - ring->rx_max_pending = virtqueue_get_vring_size(vi->rvq); - ring->tx_max_pending = virtqueue_get_vring_size(vi->svq); + ring->rx_max_pending = virtqueue_get_vring_size(vi->rq.vq); + ring->tx_max_pending = virtqueue_get_vring_size(vi->sq.vq); ring->rx_pending = ring->rx_max_pending; ring->tx_pending = ring->tx_max_pending; - } @@ -1034,8 +1061,8 @@ static int init_vqs(struct virtnet_info *vi) if (err) return err; - vi->rvq = vqs[0]; - vi->svq = vqs[1]; + vi->rq.vq = vqs[0]; + vi->sq.vq = vqs[1]; if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ)) { vi->cvq = vqs[2]; @@ -1100,11 +1127,11 @@ static int virtnet_probe(struct virtio_device *vdev) /* Set up our device-specific information */ vi = netdev_priv(dev); - netif_napi_add(dev, &vi->napi, virtnet_poll, napi_weight); + netif_napi_add(dev, &vi->rq.napi, virtnet_poll, napi_weight); vi->dev = dev; vi->vdev = vdev; vdev->priv = vi; - vi->pages = NULL; + vi->rq.pages = NULL; vi->stats = alloc_percpu(struct virtnet_stats); err = -ENOMEM; if (vi->stats == NULL) @@ -1114,8 +1141,8 @@ static int virtnet_probe(struct virtio_device *vdev) mutex_init(&vi->config_lock); vi->config_enable = true; INIT_WORK(&vi->config_work, virtnet_config_changed_work); - sg_init_table(vi->rx_sg, ARRAY_SIZE(vi->rx_sg)); - sg_init_table(vi->tx_sg, ARRAY_SIZE(vi->tx_sg)); + sg_init_table(vi->rq.sg, ARRAY_SIZE(vi->rq.sg)); + sg_init_table(vi->sq.sg, ARRAY_SIZE(vi->sq.sg)); /* If we can receive ANY GSO packets, we must allocate large ones. */ if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO4) || @@ -1137,10 +1164,10 @@ static int virtnet_probe(struct virtio_device *vdev) } /* Last of all, set up some receive buffers. */ - try_fill_recv(vi, GFP_KERNEL); + try_fill_recv(&vi->rq, GFP_KERNEL); /* If we didn't even get one input buffer, we're useless. */ - if (vi->num == 0) { + if (vi->rq.num == 0) { err = -ENOMEM; goto unregister; } @@ -1173,22 +1200,22 @@ static void free_unused_bufs(struct virtnet_info *vi) { void *buf; while (1) { - buf = virtqueue_detach_unused_buf(vi->svq); + buf = virtqueue_detach_unused_buf(vi->sq.vq); if (!buf) break; dev_kfree_skb(buf); } while (1) { - buf = virtqueue_detach_unused_buf(vi->rvq); + buf = virtqueue_detach_unused_buf(vi->rq.vq); if (!buf) break; if (vi->mergeable_rx_bufs || vi->big_packets) - give_pages(vi, buf); + give_pages(&vi->rq, buf); else dev_kfree_skb(buf); - --vi->num; + --vi->rq.num; } - BUG_ON(vi->num != 0); + BUG_ON(vi->rq.num != 0); } static void remove_vq_common(struct virtnet_info *vi) @@ -1200,8 +1227,8 @@ static void remove_vq_common(struct virtnet_info *vi) vi->vdev->config->del_vqs(vi->vdev); - while (vi->pages) - __free_pages(get_a_page(vi, GFP_KERNEL), 0); + while (vi->rq.pages) + __free_pages(get_a_page(&vi->rq, GFP_KERNEL), 0); } static void __devexit virtnet_remove(struct virtio_device *vdev) @@ -1237,7 +1264,7 @@ static int virtnet_freeze(struct virtio_device *vdev) cancel_delayed_work_sync(&vi->refill); if (netif_running(vi->dev)) - napi_disable(&vi->napi); + napi_disable(&vi->rq.napi); remove_vq_common(vi); @@ -1256,11 +1283,11 @@ static int virtnet_restore(struct virtio_device *vdev) return err; if (netif_running(vi->dev)) - virtnet_napi_enable(vi); + virtnet_napi_enable(&vi->rq); netif_device_attach(vi->dev); - if (!try_fill_recv(vi, GFP_KERNEL)) + if (!try_fill_recv(&vi->rq, GFP_KERNEL)) schedule_delayed_work(&vi->refill, 0); mutex_lock(&vi->config_lock);