diff options
Diffstat (limited to 'drivers/net/nlmon.c')
| -rw-r--r-- | drivers/net/nlmon.c | 54 |
1 files changed, 7 insertions, 47 deletions
diff --git a/drivers/net/nlmon.c b/drivers/net/nlmon.c index dd0db7534cb3..8bfd4ee5a8c4 100644 --- a/drivers/net/nlmon.c +++ b/drivers/net/nlmon.c @@ -1,3 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include <linux/ethtool.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/netdevice.h> @@ -8,30 +10,13 @@ static netdev_tx_t nlmon_xmit(struct sk_buff *skb, struct net_device *dev) { - int len = skb->len; - struct pcpu_lstats *stats = this_cpu_ptr(dev->lstats); - - u64_stats_update_begin(&stats->syncp); - stats->bytes += len; - stats->packets++; - u64_stats_update_end(&stats->syncp); + dev_lstats_add(dev, skb->len); dev_kfree_skb(skb); return NETDEV_TX_OK; } -static int nlmon_dev_init(struct net_device *dev) -{ - dev->lstats = netdev_alloc_pcpu_stats(struct pcpu_lstats); - return dev->lstats == NULL ? -ENOMEM : 0; -} - -static void nlmon_dev_uninit(struct net_device *dev) -{ - free_percpu(dev->lstats); -} - struct nlmon { struct netlink_tap nt; }; @@ -55,31 +40,7 @@ static int nlmon_close(struct net_device *dev) static void nlmon_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) { - int i; - u64 bytes = 0, packets = 0; - - for_each_possible_cpu(i) { - const struct pcpu_lstats *nl_stats; - u64 tbytes, tpackets; - unsigned int start; - - nl_stats = per_cpu_ptr(dev->lstats, i); - - do { - start = u64_stats_fetch_begin_irq(&nl_stats->syncp); - tbytes = nl_stats->bytes; - tpackets = nl_stats->packets; - } while (u64_stats_fetch_retry_irq(&nl_stats->syncp, start)); - - packets += tpackets; - bytes += tbytes; - } - - stats->rx_packets = packets; - stats->tx_packets = 0; - - stats->rx_bytes = bytes; - stats->tx_bytes = 0; + dev_lstats_read(dev, &stats->rx_packets, &stats->rx_bytes); } static u32 always_on(struct net_device *dev) @@ -92,8 +53,6 @@ static const struct ethtool_ops nlmon_ethtool_ops = { }; static const struct net_device_ops nlmon_ops = { - .ndo_init = nlmon_dev_init, - .ndo_uninit = nlmon_dev_uninit, .ndo_open = nlmon_open, .ndo_stop = nlmon_close, .ndo_start_xmit = nlmon_xmit, @@ -104,14 +63,15 @@ static void nlmon_setup(struct net_device *dev) { dev->type = ARPHRD_NETLINK; dev->priv_flags |= IFF_NO_QUEUE; + dev->lltx = true; dev->netdev_ops = &nlmon_ops; dev->ethtool_ops = &nlmon_ethtool_ops; dev->needs_free_netdev = true; - dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | - NETIF_F_HIGHDMA | NETIF_F_LLTX; + dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA; dev->flags = IFF_NOARP; + dev->pcpu_stat_type = NETDEV_PCPU_STAT_LSTATS; /* That's rather a softlimit here, which, of course, * can be altered. Not a real MTU, but what is to be |