openvswitch: Remove vport stats.
Since all vport types are now backed by netdev, we can directly use netdev stats. Following patch removes redundant stat from vport. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar
David S. Miller
parent
3eedb41fb4
commit
8c876639c9
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@ -43,35 +43,26 @@ static struct internal_dev *internal_dev_priv(struct net_device *netdev)
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return netdev_priv(netdev);
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}
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/* This function is only called by the kernel network layer.*/
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static struct rtnl_link_stats64 *internal_dev_get_stats(struct net_device *netdev,
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struct rtnl_link_stats64 *stats)
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{
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struct vport *vport = ovs_internal_dev_get_vport(netdev);
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struct ovs_vport_stats vport_stats;
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ovs_vport_get_stats(vport, &vport_stats);
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/* The tx and rx stats need to be swapped because the
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* switch and host OS have opposite perspectives. */
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stats->rx_packets = vport_stats.tx_packets;
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stats->tx_packets = vport_stats.rx_packets;
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stats->rx_bytes = vport_stats.tx_bytes;
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stats->tx_bytes = vport_stats.rx_bytes;
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stats->rx_errors = vport_stats.tx_errors;
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stats->tx_errors = vport_stats.rx_errors;
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stats->rx_dropped = vport_stats.tx_dropped;
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stats->tx_dropped = vport_stats.rx_dropped;
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return stats;
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}
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/* Called with rcu_read_lock_bh. */
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static int internal_dev_xmit(struct sk_buff *skb, struct net_device *netdev)
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{
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int len, err;
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len = skb->len;
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rcu_read_lock();
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ovs_vport_receive(internal_dev_priv(netdev)->vport, skb, NULL);
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err = ovs_vport_receive(internal_dev_priv(netdev)->vport, skb, NULL);
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rcu_read_unlock();
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if (likely(!err)) {
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struct pcpu_sw_netstats *tstats = this_cpu_ptr(netdev->tstats);
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u64_stats_update_begin(&tstats->syncp);
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tstats->tx_bytes += len;
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tstats->tx_packets++;
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u64_stats_update_end(&tstats->syncp);
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} else {
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netdev->stats.tx_errors++;
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}
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return 0;
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}
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@ -121,7 +112,6 @@ static const struct net_device_ops internal_dev_netdev_ops = {
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.ndo_start_xmit = internal_dev_xmit,
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.ndo_set_mac_address = eth_mac_addr,
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.ndo_change_mtu = internal_dev_change_mtu,
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.ndo_get_stats64 = internal_dev_get_stats,
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};
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static struct rtnl_link_ops internal_dev_link_ops __read_mostly = {
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@ -212,18 +202,17 @@ static void internal_dev_destroy(struct vport *vport)
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rtnl_unlock();
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}
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static int internal_dev_recv(struct vport *vport, struct sk_buff *skb)
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static void internal_dev_recv(struct vport *vport, struct sk_buff *skb)
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{
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struct net_device *netdev = vport->dev;
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int len;
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struct pcpu_sw_netstats *stats;
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if (unlikely(!(netdev->flags & IFF_UP))) {
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kfree_skb(skb);
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return 0;
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netdev->stats.rx_dropped++;
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return;
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}
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len = skb->len;
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skb_dst_drop(skb);
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nf_reset(skb);
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secpath_reset(skb);
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@ -233,9 +222,13 @@ static int internal_dev_recv(struct vport *vport, struct sk_buff *skb)
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skb->protocol = eth_type_trans(skb, netdev);
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skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
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netif_rx(skb);
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stats = this_cpu_ptr(netdev->tstats);
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u64_stats_update_begin(&stats->syncp);
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stats->rx_packets++;
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stats->rx_bytes += skb->len;
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u64_stats_update_end(&stats->syncp);
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return len;
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netif_rx(skb);
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}
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static struct vport_ops ovs_internal_vport_ops = {
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@ -39,8 +39,11 @@
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static struct vport_ops ovs_netdev_vport_ops;
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/* Must be called with rcu_read_lock. */
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static void netdev_port_receive(struct vport *vport, struct sk_buff *skb)
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static void netdev_port_receive(struct sk_buff *skb)
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{
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struct vport *vport;
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vport = ovs_netdev_get_vport(skb->dev);
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if (unlikely(!vport))
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goto error;
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@ -56,10 +59,8 @@ static void netdev_port_receive(struct vport *vport, struct sk_buff *skb)
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skb_push(skb, ETH_HLEN);
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ovs_skb_postpush_rcsum(skb, skb->data, ETH_HLEN);
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ovs_vport_receive(vport, skb, skb_tunnel_info(skb));
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return;
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error:
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kfree_skb(skb);
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}
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@ -68,15 +69,11 @@ error:
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static rx_handler_result_t netdev_frame_hook(struct sk_buff **pskb)
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{
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struct sk_buff *skb = *pskb;
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struct vport *vport;
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if (unlikely(skb->pkt_type == PACKET_LOOPBACK))
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return RX_HANDLER_PASS;
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vport = ovs_netdev_get_vport(skb->dev);
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netdev_port_receive(vport, skb);
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netdev_port_receive(skb);
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return RX_HANDLER_CONSUMED;
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}
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@ -203,27 +200,24 @@ static unsigned int packet_length(const struct sk_buff *skb)
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return length;
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}
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int ovs_netdev_send(struct vport *vport, struct sk_buff *skb)
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void ovs_netdev_send(struct vport *vport, struct sk_buff *skb)
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{
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int mtu = vport->dev->mtu;
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int len;
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if (unlikely(packet_length(skb) > mtu && !skb_is_gso(skb))) {
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net_warn_ratelimited("%s: dropped over-mtu packet: %d > %d\n",
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vport->dev->name,
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packet_length(skb), mtu);
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vport->dev->stats.tx_errors++;
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goto drop;
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}
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skb->dev = vport->dev;
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len = skb->len;
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dev_queue_xmit(skb);
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return len;
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return;
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drop:
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(ovs_netdev_send);
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@ -27,7 +27,7 @@
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struct vport *ovs_netdev_get_vport(struct net_device *dev);
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struct vport *ovs_netdev_link(struct vport *vport, const char *name);
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int ovs_netdev_send(struct vport *vport, struct sk_buff *skb);
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void ovs_netdev_send(struct vport *vport, struct sk_buff *skb);
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void ovs_netdev_detach_dev(struct vport *);
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int __init ovs_netdev_init(void);
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@ -34,9 +34,6 @@
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#include "vport.h"
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#include "vport-internal_dev.h"
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static void ovs_vport_record_error(struct vport *,
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enum vport_err_type err_type);
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static LIST_HEAD(vport_ops_list);
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/* Protected by RCU read lock for reading, ovs_mutex for writing. */
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@ -157,12 +154,6 @@ struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops,
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return ERR_PTR(-EINVAL);
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}
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vport->percpu_stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
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if (!vport->percpu_stats) {
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kfree(vport);
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return ERR_PTR(-ENOMEM);
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}
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return vport;
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}
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EXPORT_SYMBOL_GPL(ovs_vport_alloc);
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@ -183,7 +174,6 @@ void ovs_vport_free(struct vport *vport)
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* it is safe to use raw dereference.
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*/
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kfree(rcu_dereference_raw(vport->upcall_portids));
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free_percpu(vport->percpu_stats);
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kfree(vport);
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}
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EXPORT_SYMBOL_GPL(ovs_vport_free);
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@ -290,30 +280,24 @@ void ovs_vport_del(struct vport *vport)
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*/
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void ovs_vport_get_stats(struct vport *vport, struct ovs_vport_stats *stats)
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{
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struct net_device *dev = vport->dev;
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int i;
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memset(stats, 0, sizeof(*stats));
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stats->rx_errors = dev->stats.rx_errors;
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stats->tx_errors = dev->stats.tx_errors;
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stats->tx_dropped = dev->stats.tx_dropped;
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stats->rx_dropped = dev->stats.rx_dropped;
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/* We potentially have 2 sources of stats that need to be combined:
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* those we have collected (split into err_stats and percpu_stats) from
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* set_stats() and device error stats from netdev->get_stats() (for
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* errors that happen downstream and therefore aren't reported through
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* our vport_record_error() function).
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* Stats from first source are reported by ovs (OVS_VPORT_ATTR_STATS).
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* netdev-stats can be directly read over netlink-ioctl.
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*/
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stats->rx_errors = atomic_long_read(&vport->err_stats.rx_errors);
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stats->tx_errors = atomic_long_read(&vport->err_stats.tx_errors);
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stats->tx_dropped = atomic_long_read(&vport->err_stats.tx_dropped);
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stats->rx_dropped = atomic_long_read(&vport->err_stats.rx_dropped);
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stats->rx_dropped += atomic_long_read(&dev->rx_dropped);
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stats->tx_dropped += atomic_long_read(&dev->tx_dropped);
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for_each_possible_cpu(i) {
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const struct pcpu_sw_netstats *percpu_stats;
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struct pcpu_sw_netstats local_stats;
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unsigned int start;
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percpu_stats = per_cpu_ptr(vport->percpu_stats, i);
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percpu_stats = per_cpu_ptr(dev->tstats, i);
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do {
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start = u64_stats_fetch_begin_irq(&percpu_stats->syncp);
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@ -468,94 +452,25 @@ u32 ovs_vport_find_upcall_portid(const struct vport *vport, struct sk_buff *skb)
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* Must be called with rcu_read_lock. The packet cannot be shared and
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* skb->data should point to the Ethernet header.
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*/
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void ovs_vport_receive(struct vport *vport, struct sk_buff *skb,
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const struct ip_tunnel_info *tun_info)
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int ovs_vport_receive(struct vport *vport, struct sk_buff *skb,
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const struct ip_tunnel_info *tun_info)
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{
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struct pcpu_sw_netstats *stats;
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struct sw_flow_key key;
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int error;
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stats = this_cpu_ptr(vport->percpu_stats);
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u64_stats_update_begin(&stats->syncp);
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stats->rx_packets++;
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stats->rx_bytes += skb->len +
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(skb_vlan_tag_present(skb) ? VLAN_HLEN : 0);
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u64_stats_update_end(&stats->syncp);
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OVS_CB(skb)->input_vport = vport;
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OVS_CB(skb)->mru = 0;
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/* Extract flow from 'skb' into 'key'. */
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error = ovs_flow_key_extract(tun_info, skb, &key);
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if (unlikely(error)) {
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kfree_skb(skb);
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return;
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return error;
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}
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ovs_dp_process_packet(skb, &key);
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return 0;
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}
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EXPORT_SYMBOL_GPL(ovs_vport_receive);
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/**
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* ovs_vport_send - send a packet on a device
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*
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* @vport: vport on which to send the packet
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* @skb: skb to send
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*
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* Sends the given packet and returns the length of data sent. Either ovs
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* lock or rcu_read_lock must be held.
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*/
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int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
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{
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int sent = vport->ops->send(vport, skb);
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if (likely(sent > 0)) {
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struct pcpu_sw_netstats *stats;
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stats = this_cpu_ptr(vport->percpu_stats);
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u64_stats_update_begin(&stats->syncp);
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stats->tx_packets++;
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stats->tx_bytes += sent;
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u64_stats_update_end(&stats->syncp);
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} else if (sent < 0) {
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ovs_vport_record_error(vport, VPORT_E_TX_ERROR);
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} else {
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ovs_vport_record_error(vport, VPORT_E_TX_DROPPED);
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}
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return sent;
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}
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/**
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* ovs_vport_record_error - indicate device error to generic stats layer
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*
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* @vport: vport that encountered the error
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* @err_type: one of enum vport_err_type types to indicate the error type
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*
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* If using the vport generic stats layer indicate that an error of the given
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* type has occurred.
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*/
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static void ovs_vport_record_error(struct vport *vport,
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enum vport_err_type err_type)
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{
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switch (err_type) {
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case VPORT_E_RX_DROPPED:
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atomic_long_inc(&vport->err_stats.rx_dropped);
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break;
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case VPORT_E_RX_ERROR:
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atomic_long_inc(&vport->err_stats.rx_errors);
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break;
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case VPORT_E_TX_DROPPED:
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atomic_long_inc(&vport->err_stats.tx_dropped);
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break;
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case VPORT_E_TX_ERROR:
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atomic_long_inc(&vport->err_stats.tx_errors);
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break;
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}
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}
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static void free_vport_rcu(struct rcu_head *rcu)
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{
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struct vport *vport = container_of(rcu, struct vport, rcu);
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@ -57,8 +57,6 @@ int ovs_vport_set_upcall_portids(struct vport *, const struct nlattr *pids);
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int ovs_vport_get_upcall_portids(const struct vport *, struct sk_buff *);
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u32 ovs_vport_find_upcall_portid(const struct vport *, struct sk_buff *);
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int ovs_vport_send(struct vport *, struct sk_buff *);
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int ovs_tunnel_get_egress_info(struct ip_tunnel_info *egress_tun_info,
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struct net *net,
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struct sk_buff *,
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@ -68,14 +66,6 @@ int ovs_tunnel_get_egress_info(struct ip_tunnel_info *egress_tun_info,
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int ovs_vport_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
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struct ip_tunnel_info *info);
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/* The following definitions are for implementers of vport devices: */
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struct vport_err_stats {
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atomic_long_t rx_dropped;
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atomic_long_t rx_errors;
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atomic_long_t tx_dropped;
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atomic_long_t tx_errors;
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};
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/**
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* struct vport_portids - array of netlink portids of a vport.
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* must be protected by rcu.
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@ -101,8 +91,6 @@ struct vport_portids {
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* @hash_node: Element in @dev_table hash table in vport.c.
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* @dp_hash_node: Element in @datapath->ports hash table in datapath.c.
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* @ops: Class structure.
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* @percpu_stats: Points to per-CPU statistics used and maintained by vport
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* @err_stats: Points to error statistics used and maintained by vport
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* @detach_list: list used for detaching vport in net-exit call.
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*/
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struct vport {
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@ -115,9 +103,6 @@ struct vport {
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struct hlist_node dp_hash_node;
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const struct vport_ops *ops;
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struct pcpu_sw_netstats __percpu *percpu_stats;
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struct vport_err_stats err_stats;
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struct list_head detach_list;
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struct rcu_head rcu;
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};
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@ -156,7 +141,7 @@ struct vport_parms {
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* @get_options: Appends vport-specific attributes for the configuration of an
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* existing vport to a &struct sk_buff. May be %NULL for a vport that does not
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* have any configuration.
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* @send: Send a packet on the device. Returns the length of the packet sent,
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* @send: Send a packet on the device.
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* zero for dropped packets or negative for error.
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* @get_egress_tun_info: Get the egress tunnel 5-tuple and other info for
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* a packet.
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@ -171,7 +156,7 @@ struct vport_ops {
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int (*set_options)(struct vport *, struct nlattr *);
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int (*get_options)(const struct vport *, struct sk_buff *);
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int (*send)(struct vport *, struct sk_buff *);
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void (*send)(struct vport *, struct sk_buff *);
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int (*get_egress_tun_info)(struct vport *, struct sk_buff *,
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struct ip_tunnel_info *);
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@ -179,13 +164,6 @@ struct vport_ops {
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struct list_head list;
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};
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enum vport_err_type {
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VPORT_E_RX_DROPPED,
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VPORT_E_RX_ERROR,
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VPORT_E_TX_DROPPED,
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VPORT_E_TX_ERROR,
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};
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struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *,
|
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const struct vport_parms *);
|
||||
void ovs_vport_free(struct vport *);
|
||||
|
|
@ -222,8 +200,8 @@ static inline struct vport *vport_from_priv(void *priv)
|
|||
return (struct vport *)((u8 *)priv - ALIGN(sizeof(struct vport), VPORT_ALIGN));
|
||||
}
|
||||
|
||||
void ovs_vport_receive(struct vport *, struct sk_buff *,
|
||||
const struct ip_tunnel_info *);
|
||||
int ovs_vport_receive(struct vport *, struct sk_buff *,
|
||||
const struct ip_tunnel_info *);
|
||||
|
||||
static inline void ovs_skb_postpush_rcsum(struct sk_buff *skb,
|
||||
const void *start, unsigned int len)
|
||||
|
|
@ -258,4 +236,10 @@ static inline struct rtable *ovs_tunnel_route_lookup(struct net *net,
|
|||
rt = ip_route_output_key(net, fl);
|
||||
return rt;
|
||||
}
|
||||
|
||||
static inline void ovs_vport_send(struct vport *vport, struct sk_buff *skb)
|
||||
{
|
||||
vport->ops->send(vport, skb);
|
||||
}
|
||||
|
||||
#endif /* vport.h */
|
||||
|
|
|
|||
Loading…
Reference in New Issue