mirror of https://gitee.com/openkylin/linux.git
Merge branch 'virtio_net-Add-ethtool-stat-items'
Toshiaki Makita says: ==================== virtio_net: Add ethtool stat items Add some ethtool stat items useful for performance analysis. ==================== Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
commit
7e50b2a51d
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@ -82,25 +82,55 @@ struct virtnet_sq_stats {
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struct u64_stats_sync syncp;
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u64 packets;
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u64 bytes;
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u64 xdp_tx;
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u64 xdp_tx_drops;
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u64 kicks;
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};
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struct virtnet_rq_stat_items {
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u64 packets;
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u64 bytes;
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u64 drops;
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u64 xdp_packets;
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u64 xdp_tx;
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u64 xdp_redirects;
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u64 xdp_drops;
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u64 kicks;
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};
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struct virtnet_rq_stats {
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struct u64_stats_sync syncp;
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u64 packets;
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u64 bytes;
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struct virtnet_rq_stat_items items;
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};
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struct virtnet_rx_stats {
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struct virtnet_rq_stat_items rx;
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struct {
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unsigned int xdp_tx;
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unsigned int xdp_tx_drops;
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} tx;
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};
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#define VIRTNET_SQ_STAT(m) offsetof(struct virtnet_sq_stats, m)
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#define VIRTNET_RQ_STAT(m) offsetof(struct virtnet_rq_stats, m)
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#define VIRTNET_RQ_STAT(m) offsetof(struct virtnet_rq_stat_items, m)
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static const struct virtnet_stat_desc virtnet_sq_stats_desc[] = {
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{ "packets", VIRTNET_SQ_STAT(packets) },
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{ "bytes", VIRTNET_SQ_STAT(bytes) },
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{ "xdp_tx", VIRTNET_SQ_STAT(xdp_tx) },
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{ "xdp_tx_drops", VIRTNET_SQ_STAT(xdp_tx_drops) },
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{ "kicks", VIRTNET_SQ_STAT(kicks) },
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};
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static const struct virtnet_stat_desc virtnet_rq_stats_desc[] = {
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{ "packets", VIRTNET_RQ_STAT(packets) },
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{ "bytes", VIRTNET_RQ_STAT(bytes) },
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{ "drops", VIRTNET_RQ_STAT(drops) },
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{ "xdp_packets", VIRTNET_RQ_STAT(xdp_packets) },
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{ "xdp_tx", VIRTNET_RQ_STAT(xdp_tx) },
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{ "xdp_redirects", VIRTNET_RQ_STAT(xdp_redirects) },
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{ "xdp_drops", VIRTNET_RQ_STAT(xdp_drops) },
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{ "kicks", VIRTNET_RQ_STAT(kicks) },
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};
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#define VIRTNET_SQ_STATS_LEN ARRAY_SIZE(virtnet_sq_stats_desc)
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@ -447,16 +477,22 @@ static int __virtnet_xdp_xmit_one(struct virtnet_info *vi,
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return 0;
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}
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static struct send_queue *virtnet_xdp_sq(struct virtnet_info *vi)
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{
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unsigned int qp;
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qp = vi->curr_queue_pairs - vi->xdp_queue_pairs + smp_processor_id();
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return &vi->sq[qp];
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}
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static int __virtnet_xdp_tx_xmit(struct virtnet_info *vi,
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struct xdp_frame *xdpf)
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{
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struct xdp_frame *xdpf_sent;
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struct send_queue *sq;
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unsigned int len;
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unsigned int qp;
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qp = vi->curr_queue_pairs - vi->xdp_queue_pairs + smp_processor_id();
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sq = &vi->sq[qp];
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sq = virtnet_xdp_sq(vi);
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/* Free up any pending old buffers before queueing new ones. */
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while ((xdpf_sent = virtqueue_get_buf(sq->vq, &len)) != NULL)
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@ -474,23 +510,28 @@ static int virtnet_xdp_xmit(struct net_device *dev,
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struct bpf_prog *xdp_prog;
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struct send_queue *sq;
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unsigned int len;
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unsigned int qp;
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int drops = 0;
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int err;
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int kicks = 0;
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int ret, err;
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int i;
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if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
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return -EINVAL;
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sq = virtnet_xdp_sq(vi);
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qp = vi->curr_queue_pairs - vi->xdp_queue_pairs + smp_processor_id();
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sq = &vi->sq[qp];
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if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) {
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ret = -EINVAL;
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drops = n;
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goto out;
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}
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/* Only allow ndo_xdp_xmit if XDP is loaded on dev, as this
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* indicate XDP resources have been successfully allocated.
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*/
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xdp_prog = rcu_dereference(rq->xdp_prog);
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if (!xdp_prog)
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return -ENXIO;
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if (!xdp_prog) {
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ret = -ENXIO;
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drops = n;
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goto out;
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}
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/* Free up any pending old buffers before queueing new ones. */
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while ((xdpf_sent = virtqueue_get_buf(sq->vq, &len)) != NULL)
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@ -505,11 +546,20 @@ static int virtnet_xdp_xmit(struct net_device *dev,
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drops++;
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}
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}
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ret = n - drops;
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if (flags & XDP_XMIT_FLUSH)
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virtqueue_kick(sq->vq);
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if (flags & XDP_XMIT_FLUSH) {
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if (virtqueue_kick_prepare(sq->vq) && virtqueue_notify(sq->vq))
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kicks = 1;
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}
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out:
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u64_stats_update_begin(&sq->stats.syncp);
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sq->stats.xdp_tx += n;
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sq->stats.xdp_tx_drops += drops;
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sq->stats.kicks += kicks;
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u64_stats_update_end(&sq->stats.syncp);
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return n - drops;
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return ret;
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}
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static unsigned int virtnet_get_headroom(struct virtnet_info *vi)
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@ -586,7 +636,8 @@ static struct sk_buff *receive_small(struct net_device *dev,
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struct receive_queue *rq,
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void *buf, void *ctx,
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unsigned int len,
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unsigned int *xdp_xmit)
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unsigned int *xdp_xmit,
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struct virtnet_rx_stats *stats)
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{
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struct sk_buff *skb;
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struct bpf_prog *xdp_prog;
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@ -601,6 +652,7 @@ static struct sk_buff *receive_small(struct net_device *dev,
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int err;
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len -= vi->hdr_len;
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stats->rx.bytes += len;
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rcu_read_lock();
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xdp_prog = rcu_dereference(rq->xdp_prog);
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@ -642,6 +694,7 @@ static struct sk_buff *receive_small(struct net_device *dev,
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xdp.rxq = &rq->xdp_rxq;
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orig_data = xdp.data;
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act = bpf_prog_run_xdp(xdp_prog, &xdp);
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stats->rx.xdp_packets++;
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switch (act) {
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case XDP_PASS:
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@ -650,11 +703,14 @@ static struct sk_buff *receive_small(struct net_device *dev,
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len = xdp.data_end - xdp.data;
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break;
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case XDP_TX:
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stats->rx.xdp_tx++;
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xdpf = convert_to_xdp_frame(&xdp);
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if (unlikely(!xdpf))
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goto err_xdp;
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stats->tx.xdp_tx++;
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err = __virtnet_xdp_tx_xmit(vi, xdpf);
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if (unlikely(err)) {
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stats->tx.xdp_tx_drops++;
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trace_xdp_exception(vi->dev, xdp_prog, act);
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goto err_xdp;
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}
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@ -662,6 +718,7 @@ static struct sk_buff *receive_small(struct net_device *dev,
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rcu_read_unlock();
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goto xdp_xmit;
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case XDP_REDIRECT:
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stats->rx.xdp_redirects++;
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err = xdp_do_redirect(dev, &xdp, xdp_prog);
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if (err)
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goto err_xdp;
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@ -695,7 +752,8 @@ static struct sk_buff *receive_small(struct net_device *dev,
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err_xdp:
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rcu_read_unlock();
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dev->stats.rx_dropped++;
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stats->rx.xdp_drops++;
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stats->rx.drops++;
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put_page(page);
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xdp_xmit:
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return NULL;
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@ -705,18 +763,20 @@ static struct sk_buff *receive_big(struct net_device *dev,
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struct virtnet_info *vi,
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struct receive_queue *rq,
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void *buf,
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unsigned int len)
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unsigned int len,
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struct virtnet_rx_stats *stats)
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{
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struct page *page = buf;
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struct sk_buff *skb = page_to_skb(vi, rq, page, 0, len, PAGE_SIZE);
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stats->rx.bytes += len - vi->hdr_len;
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if (unlikely(!skb))
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goto err;
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return skb;
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err:
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dev->stats.rx_dropped++;
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stats->rx.drops++;
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give_pages(rq, page);
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return NULL;
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}
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@ -727,7 +787,8 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
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void *buf,
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void *ctx,
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unsigned int len,
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unsigned int *xdp_xmit)
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unsigned int *xdp_xmit,
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struct virtnet_rx_stats *stats)
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{
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struct virtio_net_hdr_mrg_rxbuf *hdr = buf;
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u16 num_buf = virtio16_to_cpu(vi->vdev, hdr->num_buffers);
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@ -740,6 +801,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
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int err;
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head_skb = NULL;
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stats->rx.bytes += len - vi->hdr_len;
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rcu_read_lock();
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xdp_prog = rcu_dereference(rq->xdp_prog);
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@ -788,6 +850,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
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xdp.rxq = &rq->xdp_rxq;
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act = bpf_prog_run_xdp(xdp_prog, &xdp);
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stats->rx.xdp_packets++;
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switch (act) {
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case XDP_PASS:
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@ -812,11 +875,14 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
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}
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break;
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case XDP_TX:
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stats->rx.xdp_tx++;
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xdpf = convert_to_xdp_frame(&xdp);
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if (unlikely(!xdpf))
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goto err_xdp;
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stats->tx.xdp_tx++;
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err = __virtnet_xdp_tx_xmit(vi, xdpf);
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if (unlikely(err)) {
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stats->tx.xdp_tx_drops++;
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trace_xdp_exception(vi->dev, xdp_prog, act);
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if (unlikely(xdp_page != page))
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put_page(xdp_page);
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@ -828,6 +894,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
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rcu_read_unlock();
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goto xdp_xmit;
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case XDP_REDIRECT:
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stats->rx.xdp_redirects++;
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err = xdp_do_redirect(dev, &xdp, xdp_prog);
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if (err) {
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if (unlikely(xdp_page != page))
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@ -877,6 +944,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
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goto err_buf;
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}
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stats->rx.bytes += len;
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page = virt_to_head_page(buf);
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truesize = mergeable_ctx_to_truesize(ctx);
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@ -922,6 +990,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
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err_xdp:
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rcu_read_unlock();
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stats->rx.xdp_drops++;
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err_skb:
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put_page(page);
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while (num_buf-- > 1) {
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@ -932,24 +1001,25 @@ static struct sk_buff *receive_mergeable(struct net_device *dev,
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dev->stats.rx_length_errors++;
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break;
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}
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stats->rx.bytes += len;
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page = virt_to_head_page(buf);
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put_page(page);
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}
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err_buf:
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dev->stats.rx_dropped++;
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stats->rx.drops++;
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dev_kfree_skb(head_skb);
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xdp_xmit:
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return NULL;
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}
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static int receive_buf(struct virtnet_info *vi, struct receive_queue *rq,
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static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq,
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void *buf, unsigned int len, void **ctx,
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unsigned int *xdp_xmit)
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unsigned int *xdp_xmit,
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struct virtnet_rx_stats *stats)
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{
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struct net_device *dev = vi->dev;
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struct sk_buff *skb;
|
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struct virtio_net_hdr_mrg_rxbuf *hdr;
|
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int ret;
|
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|
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if (unlikely(len < vi->hdr_len + ETH_HLEN)) {
|
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pr_debug("%s: short packet %i\n", dev->name, len);
|
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|
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@ -961,23 +1031,22 @@ static int receive_buf(struct virtnet_info *vi, struct receive_queue *rq,
|
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} else {
|
||||
put_page(virt_to_head_page(buf));
|
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}
|
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return 0;
|
||||
return;
|
||||
}
|
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|
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if (vi->mergeable_rx_bufs)
|
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skb = receive_mergeable(dev, vi, rq, buf, ctx, len, xdp_xmit);
|
||||
skb = receive_mergeable(dev, vi, rq, buf, ctx, len, xdp_xmit,
|
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stats);
|
||||
else if (vi->big_packets)
|
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skb = receive_big(dev, vi, rq, buf, len);
|
||||
skb = receive_big(dev, vi, rq, buf, len, stats);
|
||||
else
|
||||
skb = receive_small(dev, vi, rq, buf, ctx, len, xdp_xmit);
|
||||
skb = receive_small(dev, vi, rq, buf, ctx, len, xdp_xmit, stats);
|
||||
|
||||
if (unlikely(!skb))
|
||||
return 0;
|
||||
return;
|
||||
|
||||
hdr = skb_vnet_hdr(skb);
|
||||
|
||||
ret = skb->len;
|
||||
|
||||
if (hdr->hdr.flags & VIRTIO_NET_HDR_F_DATA_VALID)
|
||||
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
||||
|
||||
|
|
@ -994,12 +1063,11 @@ static int receive_buf(struct virtnet_info *vi, struct receive_queue *rq,
|
|||
ntohs(skb->protocol), skb->len, skb->pkt_type);
|
||||
|
||||
napi_gro_receive(&rq->napi, skb);
|
||||
return ret;
|
||||
return;
|
||||
|
||||
frame_err:
|
||||
dev->stats.rx_frame_errors++;
|
||||
dev_kfree_skb(skb);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Unlike mergeable buffers, all buffers are allocated to the
|
||||
|
|
@ -1166,7 +1234,12 @@ static bool try_fill_recv(struct virtnet_info *vi, struct receive_queue *rq,
|
|||
if (err)
|
||||
break;
|
||||
} while (rq->vq->num_free);
|
||||
virtqueue_kick(rq->vq);
|
||||
if (virtqueue_kick_prepare(rq->vq) && virtqueue_notify(rq->vq)) {
|
||||
u64_stats_update_begin(&rq->stats.syncp);
|
||||
rq->stats.items.kicks++;
|
||||
u64_stats_update_end(&rq->stats.syncp);
|
||||
}
|
||||
|
||||
return !oom;
|
||||
}
|
||||
|
||||
|
|
@ -1241,22 +1314,25 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
|
|||
unsigned int *xdp_xmit)
|
||||
{
|
||||
struct virtnet_info *vi = rq->vq->vdev->priv;
|
||||
unsigned int len, received = 0, bytes = 0;
|
||||
struct virtnet_rx_stats stats = {};
|
||||
struct send_queue *sq;
|
||||
unsigned int len;
|
||||
void *buf;
|
||||
int i;
|
||||
|
||||
if (!vi->big_packets || vi->mergeable_rx_bufs) {
|
||||
void *ctx;
|
||||
|
||||
while (received < budget &&
|
||||
while (stats.rx.packets < budget &&
|
||||
(buf = virtqueue_get_buf_ctx(rq->vq, &len, &ctx))) {
|
||||
bytes += receive_buf(vi, rq, buf, len, ctx, xdp_xmit);
|
||||
received++;
|
||||
receive_buf(vi, rq, buf, len, ctx, xdp_xmit, &stats);
|
||||
stats.rx.packets++;
|
||||
}
|
||||
} else {
|
||||
while (received < budget &&
|
||||
while (stats.rx.packets < budget &&
|
||||
(buf = virtqueue_get_buf(rq->vq, &len)) != NULL) {
|
||||
bytes += receive_buf(vi, rq, buf, len, NULL, xdp_xmit);
|
||||
received++;
|
||||
receive_buf(vi, rq, buf, len, NULL, xdp_xmit, &stats);
|
||||
stats.rx.packets++;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1266,11 +1342,22 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
|
|||
}
|
||||
|
||||
u64_stats_update_begin(&rq->stats.syncp);
|
||||
rq->stats.bytes += bytes;
|
||||
rq->stats.packets += received;
|
||||
for (i = 0; i < VIRTNET_RQ_STATS_LEN; i++) {
|
||||
size_t offset = virtnet_rq_stats_desc[i].offset;
|
||||
u64 *item;
|
||||
|
||||
item = (u64 *)((u8 *)&rq->stats.items + offset);
|
||||
*item += *(u64 *)((u8 *)&stats.rx + offset);
|
||||
}
|
||||
u64_stats_update_end(&rq->stats.syncp);
|
||||
|
||||
return received;
|
||||
sq = virtnet_xdp_sq(vi);
|
||||
u64_stats_update_begin(&sq->stats.syncp);
|
||||
sq->stats.xdp_tx += stats.tx.xdp_tx;
|
||||
sq->stats.xdp_tx_drops += stats.tx.xdp_tx_drops;
|
||||
u64_stats_update_end(&sq->stats.syncp);
|
||||
|
||||
return stats.rx.packets;
|
||||
}
|
||||
|
||||
static void free_old_xmit_skbs(struct send_queue *sq)
|
||||
|
|
@ -1326,7 +1413,7 @@ static int virtnet_poll(struct napi_struct *napi, int budget)
|
|||
container_of(napi, struct receive_queue, napi);
|
||||
struct virtnet_info *vi = rq->vq->vdev->priv;
|
||||
struct send_queue *sq;
|
||||
unsigned int received, qp;
|
||||
unsigned int received;
|
||||
unsigned int xdp_xmit = 0;
|
||||
|
||||
virtnet_poll_cleantx(rq);
|
||||
|
|
@ -1341,10 +1428,12 @@ static int virtnet_poll(struct napi_struct *napi, int budget)
|
|||
xdp_do_flush_map();
|
||||
|
||||
if (xdp_xmit & VIRTIO_XDP_TX) {
|
||||
qp = vi->curr_queue_pairs - vi->xdp_queue_pairs +
|
||||
smp_processor_id();
|
||||
sq = &vi->sq[qp];
|
||||
virtqueue_kick(sq->vq);
|
||||
sq = virtnet_xdp_sq(vi);
|
||||
if (virtqueue_kick_prepare(sq->vq) && virtqueue_notify(sq->vq)) {
|
||||
u64_stats_update_begin(&sq->stats.syncp);
|
||||
sq->stats.kicks++;
|
||||
u64_stats_update_end(&sq->stats.syncp);
|
||||
}
|
||||
}
|
||||
|
||||
return received;
|
||||
|
|
@ -1506,8 +1595,13 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|||
}
|
||||
}
|
||||
|
||||
if (kick || netif_xmit_stopped(txq))
|
||||
virtqueue_kick(sq->vq);
|
||||
if (kick || netif_xmit_stopped(txq)) {
|
||||
if (virtqueue_kick_prepare(sq->vq) && virtqueue_notify(sq->vq)) {
|
||||
u64_stats_update_begin(&sq->stats.syncp);
|
||||
sq->stats.kicks++;
|
||||
u64_stats_update_end(&sq->stats.syncp);
|
||||
}
|
||||
}
|
||||
|
||||
return NETDEV_TX_OK;
|
||||
}
|
||||
|
|
@ -1611,7 +1705,7 @@ static void virtnet_stats(struct net_device *dev,
|
|||
int i;
|
||||
|
||||
for (i = 0; i < vi->max_queue_pairs; i++) {
|
||||
u64 tpackets, tbytes, rpackets, rbytes;
|
||||
u64 tpackets, tbytes, rpackets, rbytes, rdrops;
|
||||
struct receive_queue *rq = &vi->rq[i];
|
||||
struct send_queue *sq = &vi->sq[i];
|
||||
|
||||
|
|
@ -1623,19 +1717,20 @@ static void virtnet_stats(struct net_device *dev,
|
|||
|
||||
do {
|
||||
start = u64_stats_fetch_begin_irq(&rq->stats.syncp);
|
||||
rpackets = rq->stats.packets;
|
||||
rbytes = rq->stats.bytes;
|
||||
rpackets = rq->stats.items.packets;
|
||||
rbytes = rq->stats.items.bytes;
|
||||
rdrops = rq->stats.items.drops;
|
||||
} while (u64_stats_fetch_retry_irq(&rq->stats.syncp, start));
|
||||
|
||||
tot->rx_packets += rpackets;
|
||||
tot->tx_packets += tpackets;
|
||||
tot->rx_bytes += rbytes;
|
||||
tot->tx_bytes += tbytes;
|
||||
tot->rx_dropped += rdrops;
|
||||
}
|
||||
|
||||
tot->tx_dropped = dev->stats.tx_dropped;
|
||||
tot->tx_fifo_errors = dev->stats.tx_fifo_errors;
|
||||
tot->rx_dropped = dev->stats.rx_dropped;
|
||||
tot->rx_length_errors = dev->stats.rx_length_errors;
|
||||
tot->rx_frame_errors = dev->stats.rx_frame_errors;
|
||||
}
|
||||
|
|
@ -2014,7 +2109,7 @@ static void virtnet_get_ethtool_stats(struct net_device *dev,
|
|||
for (i = 0; i < vi->curr_queue_pairs; i++) {
|
||||
struct receive_queue *rq = &vi->rq[i];
|
||||
|
||||
stats_base = (u8 *)&rq->stats;
|
||||
stats_base = (u8 *)&rq->stats.items;
|
||||
do {
|
||||
start = u64_stats_fetch_begin_irq(&rq->stats.syncp);
|
||||
for (j = 0; j < VIRTNET_RQ_STATS_LEN; j++) {
|
||||
|
|
|
|||
Loading…
Reference in New Issue