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-rw-r--r--net/ipv6/sit.c70
1 files changed, 43 insertions, 27 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index c4ffd174352..60415711563 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -17,6 +17,8 @@
* Fred Templin <fred.l.templin@boeing.com>: isatap support
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/capability.h>
#include <linux/errno.h>
@@ -87,35 +89,51 @@ struct sit_net {
/* often modified stats are per cpu, other are shared (netdev->stats) */
struct pcpu_tstats {
- unsigned long rx_packets;
- unsigned long rx_bytes;
- unsigned long tx_packets;
- unsigned long tx_bytes;
-} __attribute__((aligned(4*sizeof(unsigned long))));
+ u64 rx_packets;
+ u64 rx_bytes;
+ u64 tx_packets;
+ u64 tx_bytes;
+ struct u64_stats_sync syncp;
+};
-static struct net_device_stats *ipip6_get_stats(struct net_device *dev)
+static struct rtnl_link_stats64 *ipip6_get_stats64(struct net_device *dev,
+ struct rtnl_link_stats64 *tot)
{
- struct pcpu_tstats sum = { 0 };
int i;
for_each_possible_cpu(i) {
const struct pcpu_tstats *tstats = per_cpu_ptr(dev->tstats, i);
-
- sum.rx_packets += tstats->rx_packets;
- sum.rx_bytes += tstats->rx_bytes;
- sum.tx_packets += tstats->tx_packets;
- sum.tx_bytes += tstats->tx_bytes;
+ u64 rx_packets, rx_bytes, tx_packets, tx_bytes;
+ unsigned int start;
+
+ do {
+ start = u64_stats_fetch_begin_bh(&tstats->syncp);
+ rx_packets = tstats->rx_packets;
+ tx_packets = tstats->tx_packets;
+ rx_bytes = tstats->rx_bytes;
+ tx_bytes = tstats->tx_bytes;
+ } while (u64_stats_fetch_retry_bh(&tstats->syncp, start));
+
+ tot->rx_packets += rx_packets;
+ tot->tx_packets += tx_packets;
+ tot->rx_bytes += rx_bytes;
+ tot->tx_bytes += tx_bytes;
}
- dev->stats.rx_packets = sum.rx_packets;
- dev->stats.rx_bytes = sum.rx_bytes;
- dev->stats.tx_packets = sum.tx_packets;
- dev->stats.tx_bytes = sum.tx_bytes;
- return &dev->stats;
+
+ tot->rx_errors = dev->stats.rx_errors;
+ tot->tx_fifo_errors = dev->stats.tx_fifo_errors;
+ tot->tx_carrier_errors = dev->stats.tx_carrier_errors;
+ tot->tx_dropped = dev->stats.tx_dropped;
+ tot->tx_aborted_errors = dev->stats.tx_aborted_errors;
+ tot->tx_errors = dev->stats.tx_errors;
+
+ return tot;
}
+
/*
* Must be invoked with rcu_read_lock
*/
-static struct ip_tunnel * ipip6_tunnel_lookup(struct net *net,
+static struct ip_tunnel *ipip6_tunnel_lookup(struct net *net,
struct net_device *dev, __be32 remote, __be32 local)
{
unsigned int h0 = HASH(remote);
@@ -686,12 +704,11 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
neigh = dst_neigh_lookup(skb_dst(skb), &iph6->daddr);
if (neigh == NULL) {
- if (net_ratelimit())
- printk(KERN_DEBUG "sit: nexthop == NULL\n");
+ net_dbg_ratelimited("sit: nexthop == NULL\n");
goto tx_error;
}
- addr6 = (const struct in6_addr*)&neigh->primary_key;
+ addr6 = (const struct in6_addr *)&neigh->primary_key;
addr_type = ipv6_addr_type(addr6);
if ((addr_type & IPV6_ADDR_UNICAST) &&
@@ -716,12 +733,11 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
neigh = dst_neigh_lookup(skb_dst(skb), &iph6->daddr);
if (neigh == NULL) {
- if (net_ratelimit())
- printk(KERN_DEBUG "sit: nexthop == NULL\n");
+ net_dbg_ratelimited("sit: nexthop == NULL\n");
goto tx_error;
}
- addr6 = (const struct in6_addr*)&neigh->primary_key;
+ addr6 = (const struct in6_addr *)&neigh->primary_key;
addr_type = ipv6_addr_type(addr6);
if (addr_type == IPV6_ADDR_ANY) {
@@ -1126,7 +1142,7 @@ static const struct net_device_ops ipip6_netdev_ops = {
.ndo_start_xmit = ipip6_tunnel_xmit,
.ndo_do_ioctl = ipip6_tunnel_ioctl,
.ndo_change_mtu = ipip6_tunnel_change_mtu,
- .ndo_get_stats = ipip6_get_stats,
+ .ndo_get_stats64= ipip6_get_stats64,
};
static void ipip6_dev_free(struct net_device *dev)
@@ -1287,7 +1303,7 @@ static int __init sit_init(void)
{
int err;
- printk(KERN_INFO "IPv6 over IPv4 tunneling driver\n");
+ pr_info("IPv6 over IPv4 tunneling driver\n");
err = register_pernet_device(&sit_net_ops);
if (err < 0)
@@ -1295,7 +1311,7 @@ static int __init sit_init(void)
err = xfrm4_tunnel_register(&sit_handler, AF_INET6);
if (err < 0) {
unregister_pernet_device(&sit_net_ops);
- printk(KERN_INFO "sit init: Can't add protocol\n");
+ pr_info("%s: can't add protocol\n", __func__);
}
return err;
}