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vlan: 64 bit rx counters 

Use u64_stats_sync infrastructure to implement 64bit rx stats.

(tx stats are addressed later)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-06-24 00:55:06 +00:00 committed by David S. Miller
parent bc66154efe
commit 9618e2ffd7
3 changed files with 41 additions and 25 deletions
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13
net/8021q/vlan.h
View File

@ -2,6 +2,7 @@
#define __BEN_VLAN_802_1Q_INC__
#include <linux/if_vlan.h>
#include <linux/u64_stats_sync.h>
/**
@ -21,14 +22,16 @@ struct vlan_priority_tci_mapping {
* struct vlan_rx_stats - VLAN percpu rx stats
* @rx_packets: number of received packets
* @rx_bytes: number of received bytes
* @multicast: number of received multicast packets
* @rx_multicast: number of received multicast packets
* @syncp: synchronization point for 64bit counters
* @rx_errors: number of errors
*/
struct vlan_rx_stats {
unsigned long rx_packets;
unsigned long rx_bytes;
unsigned long multicast;
unsigned long rx_errors;
u64 rx_packets;
u64 rx_bytes;
u64 rx_multicast;
struct u64_stats_sync syncp;
unsigned long rx_errors;
};
/**

7
net/8021q/vlan_core.c
View File

@ -41,9 +41,9 @@ int vlan_hwaccel_do_receive(struct sk_buff *skb)
skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci);
skb->vlan_tci = 0;
rx_stats = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats,
smp_processor_id());
rx_stats = this_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats);
u64_stats_update_begin(&rx_stats->syncp);
rx_stats->rx_packets++;
rx_stats->rx_bytes += skb->len;
@ -51,7 +51,7 @@ int vlan_hwaccel_do_receive(struct sk_buff *skb)
case PACKET_BROADCAST:
break;
case PACKET_MULTICAST:
rx_stats->multicast++;
rx_stats->rx_multicast++;
break;
case PACKET_OTHERHOST:
/* Our lower layer thinks this is not local, let's make sure.
@ -62,6 +62,7 @@ int vlan_hwaccel_do_receive(struct sk_buff *skb)
skb->pkt_type = PACKET_HOST;
break;
}
u64_stats_update_end(&rx_stats->syncp);
return 0;
}

46
net/8021q/vlan_dev.c
View File

@ -166,6 +166,7 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
rx_stats = per_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats,
smp_processor_id());
u64_stats_update_begin(&rx_stats->syncp);
rx_stats->rx_packets++;
rx_stats->rx_bytes += skb->len;
@ -182,7 +183,7 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
break;
case PACKET_MULTICAST:
rx_stats->multicast++;
rx_stats->rx_multicast++;
break;
case PACKET_OTHERHOST:
@ -197,6 +198,7 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
default:
break;
}
u64_stats_update_end(&rx_stats->syncp);
vlan_set_encap_proto(skb, vhdr);
@ -801,27 +803,37 @@ static u32 vlan_ethtool_get_flags(struct net_device *dev)
return dev_ethtool_get_flags(vlan->real_dev);
}
static struct net_device_stats *vlan_dev_get_stats(struct net_device *dev)
static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev)
{
struct net_device_stats *stats = &dev->stats;
struct rtnl_link_stats64 *stats = &dev->stats64;
dev_txq_stats_fold(dev, stats);
dev_txq_stats_fold(dev, &dev->stats);
if (vlan_dev_info(dev)->vlan_rx_stats) {
struct vlan_rx_stats *p, rx = {0};
struct vlan_rx_stats *p, accum = {0};
int i;
for_each_possible_cpu(i) {
u64 rxpackets, rxbytes, rxmulticast;
unsigned int start;
p = per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats, i);
rx.rx_packets += p->rx_packets;
rx.rx_bytes += p->rx_bytes;
rx.rx_errors += p->rx_errors;
rx.multicast += p->multicast;
do {
start = u64_stats_fetch_begin_bh(&p->syncp);
rxpackets = p->rx_packets;
rxbytes = p->rx_bytes;
rxmulticast = p->rx_multicast;
} while (u64_stats_fetch_retry_bh(&p->syncp, start));
accum.rx_packets += rxpackets;
accum.rx_bytes += rxbytes;
accum.rx_multicast += rxmulticast;
/* rx_errors is an ulong, not protected by syncp */
accum.rx_errors += p->rx_errors;
}
stats->rx_packets = rx.rx_packets;
stats->rx_bytes = rx.rx_bytes;
stats->rx_errors = rx.rx_errors;
stats->multicast = rx.multicast;
stats->rx_packets = accum.rx_packets;
stats->rx_bytes = accum.rx_bytes;
stats->rx_errors = accum.rx_errors;
stats->multicast = accum.rx_multicast;
}
return stats;
}
@ -848,7 +860,7 @@ static const struct net_device_ops vlan_netdev_ops = {
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
.ndo_do_ioctl = vlan_dev_ioctl,
.ndo_neigh_setup = vlan_dev_neigh_setup,
.ndo_get_stats = vlan_dev_get_stats,
.ndo_get_stats64 = vlan_dev_get_stats64,
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
@ -872,7 +884,7 @@ static const struct net_device_ops vlan_netdev_accel_ops = {
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
.ndo_do_ioctl = vlan_dev_ioctl,
.ndo_neigh_setup = vlan_dev_neigh_setup,
.ndo_get_stats = vlan_dev_get_stats,
.ndo_get_stats64 = vlan_dev_get_stats64,
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
@ -897,7 +909,7 @@ static const struct net_device_ops vlan_netdev_ops_sq = {
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
.ndo_do_ioctl = vlan_dev_ioctl,
.ndo_neigh_setup = vlan_dev_neigh_setup,
.ndo_get_stats = vlan_dev_get_stats,
.ndo_get_stats64 = vlan_dev_get_stats64,
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,
@ -922,7 +934,7 @@ static const struct net_device_ops vlan_netdev_accel_ops_sq = {
.ndo_change_rx_flags = vlan_dev_change_rx_flags,
.ndo_do_ioctl = vlan_dev_ioctl,
.ndo_neigh_setup = vlan_dev_neigh_setup,
.ndo_get_stats = vlan_dev_get_stats,
.ndo_get_stats64 = vlan_dev_get_stats64,
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
.ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup,
.ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done,