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WSL2-Linux-Kernel
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ipv4: tunnels: use DEV_STATS_INC() 

Most of code paths in tunnels are lockless (eg NETIF_F_LLTX in tx).

Adopt SMP safe DEV_STATS_INC() to update dev->stats fields.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2022-11-15 08:53:58 +00:00 коммит произвёл David S. Miller
Родитель 2fad1ba354
Коммит c4794d2225
5 изменённых файлов: 38 добавлений и 38 удалений
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10
net/ipv4/ip_gre.c
Просмотреть файл

@ -510,7 +510,7 @@ static void gre_fb_xmit(struct sk_buff *skb, struct net_device *dev,
err_free_skb:
kfree_skb(skb);
dev->stats.tx_dropped++;
DEV_STATS_INC(dev, tx_dropped);
}
static void erspan_fb_xmit(struct sk_buff *skb, struct net_device *dev)
@ -592,7 +592,7 @@ static void erspan_fb_xmit(struct sk_buff *skb, struct net_device *dev)
err_free_skb:
kfree_skb(skb);
dev->stats.tx_dropped++;
DEV_STATS_INC(dev, tx_dropped);
}
static int gre_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb)
@ -663,7 +663,7 @@ static netdev_tx_t ipgre_xmit(struct sk_buff *skb,
free_skb:
kfree_skb(skb);
dev->stats.tx_dropped++;
DEV_STATS_INC(dev, tx_dropped);
return NETDEV_TX_OK;
}
@ -717,7 +717,7 @@ static netdev_tx_t erspan_xmit(struct sk_buff *skb,
free_skb:
kfree_skb(skb);
dev->stats.tx_dropped++;
DEV_STATS_INC(dev, tx_dropped);
return NETDEV_TX_OK;
}
@ -745,7 +745,7 @@ static netdev_tx_t gre_tap_xmit(struct sk_buff *skb,
free_skb:
kfree_skb(skb);
dev->stats.tx_dropped++;
DEV_STATS_INC(dev, tx_dropped);
return NETDEV_TX_OK;
}

32
net/ipv4/ip_tunnel.c
Просмотреть файл

@ -368,23 +368,23 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
#ifdef CONFIG_NET_IPGRE_BROADCAST
if (ipv4_is_multicast(iph->daddr)) {
tunnel->dev->stats.multicast++;
DEV_STATS_INC(tunnel->dev, multicast);
skb->pkt_type = PACKET_BROADCAST;
}
#endif
if ((!(tpi->flags&TUNNEL_CSUM) && (tunnel->parms.i_flags&TUNNEL_CSUM)) ||
((tpi->flags&TUNNEL_CSUM) && !(tunnel->parms.i_flags&TUNNEL_CSUM))) {
tunnel->dev->stats.rx_crc_errors++;
tunnel->dev->stats.rx_errors++;
DEV_STATS_INC(tunnel->dev, rx_crc_errors);
DEV_STATS_INC(tunnel->dev, rx_errors);
goto drop;
}
if (tunnel->parms.i_flags&TUNNEL_SEQ) {
if (!(tpi->flags&TUNNEL_SEQ) ||
(tunnel->i_seqno && (s32)(ntohl(tpi->seq) - tunnel->i_seqno) < 0)) {
tunnel->dev->stats.rx_fifo_errors++;
tunnel->dev->stats.rx_errors++;
DEV_STATS_INC(tunnel->dev, rx_fifo_errors);
DEV_STATS_INC(tunnel->dev, rx_errors);
goto drop;
}
tunnel->i_seqno = ntohl(tpi->seq) + 1;
@ -398,8 +398,8 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
net_info_ratelimited("non-ECT from %pI4 with TOS=%#x\n",
&iph->saddr, iph->tos);
if (err > 1) {
++tunnel->dev->stats.rx_frame_errors;
++tunnel->dev->stats.rx_errors;
DEV_STATS_INC(tunnel->dev, rx_frame_errors);
DEV_STATS_INC(tunnel->dev, rx_errors);
goto drop;
}
}
@ -581,7 +581,7 @@ void ip_md_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
if (!rt) {
rt = ip_route_output_key(tunnel->net, &fl4);
if (IS_ERR(rt)) {
dev->stats.tx_carrier_errors++;
DEV_STATS_INC(dev, tx_carrier_errors);
goto tx_error;
}
if (use_cache)
@ -590,7 +590,7 @@ void ip_md_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
}
if (rt->dst.dev == dev) {
ip_rt_put(rt);
dev->stats.collisions++;
DEV_STATS_INC(dev, collisions);
goto tx_error;
}
@ -625,10 +625,10 @@ void ip_md_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
df, !net_eq(tunnel->net, dev_net(dev)));
return;
tx_error:
dev->stats.tx_errors++;
DEV_STATS_INC(dev, tx_errors);
goto kfree;
tx_dropped:
dev->stats.tx_dropped++;
DEV_STATS_INC(dev, tx_dropped);
kfree:
kfree_skb(skb);
}
@ -662,7 +662,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
/* NBMA tunnel */
if (!skb_dst(skb)) {
dev->stats.tx_fifo_errors++;
DEV_STATS_INC(dev, tx_fifo_errors);
goto tx_error;
}
@ -749,7 +749,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
rt = ip_route_output_key(tunnel->net, &fl4);
if (IS_ERR(rt)) {
dev->stats.tx_carrier_errors++;
DEV_STATS_INC(dev, tx_carrier_errors);
goto tx_error;
}
if (use_cache)
@ -762,7 +762,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
if (rt->dst.dev == dev) {
ip_rt_put(rt);
dev->stats.collisions++;
DEV_STATS_INC(dev, collisions);
goto tx_error;
}
@ -805,7 +805,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
if (skb_cow_head(skb, dev->needed_headroom)) {
ip_rt_put(rt);
dev->stats.tx_dropped++;
DEV_STATS_INC(dev, tx_dropped);
kfree_skb(skb);
return;
}
@ -819,7 +819,7 @@ tx_error_icmp:
dst_link_failure(skb);
#endif
tx_error:
dev->stats.tx_errors++;
DEV_STATS_INC(dev, tx_errors);
kfree_skb(skb);
}
EXPORT_SYMBOL_GPL(ip_tunnel_xmit);

20
net/ipv4/ip_vti.c
Просмотреть файл

@ -107,8 +107,8 @@ static int vti_rcv_cb(struct sk_buff *skb, int err)
dev = tunnel->dev;
if (err) {
dev->stats.rx_errors++;
dev->stats.rx_dropped++;
DEV_STATS_INC(dev, rx_errors);
DEV_STATS_INC(dev, rx_dropped);
return 0;
}
@ -183,7 +183,7 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
fl->u.ip4.flowi4_flags |= FLOWI_FLAG_ANYSRC;
rt = __ip_route_output_key(dev_net(dev), &fl->u.ip4);
if (IS_ERR(rt)) {
dev->stats.tx_carrier_errors++;
DEV_STATS_INC(dev, tx_carrier_errors);
goto tx_error_icmp;
}
dst = &rt->dst;
@ -198,14 +198,14 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
if (dst->error) {
dst_release(dst);
dst = NULL;
dev->stats.tx_carrier_errors++;
DEV_STATS_INC(dev, tx_carrier_errors);
goto tx_error_icmp;
}
skb_dst_set(skb, dst);
break;
#endif
default:
dev->stats.tx_carrier_errors++;
DEV_STATS_INC(dev, tx_carrier_errors);
goto tx_error_icmp;
}
}
@ -213,7 +213,7 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
dst_hold(dst);
dst = xfrm_lookup_route(tunnel->net, dst, fl, NULL, 0);
if (IS_ERR(dst)) {
dev->stats.tx_carrier_errors++;
DEV_STATS_INC(dev, tx_carrier_errors);
goto tx_error_icmp;
}
@ -221,7 +221,7 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
goto xmit;
if (!vti_state_check(dst->xfrm, parms->iph.daddr, parms->iph.saddr)) {
dev->stats.tx_carrier_errors++;
DEV_STATS_INC(dev, tx_carrier_errors);
dst_release(dst);
goto tx_error_icmp;
}
@ -230,7 +230,7 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
if (tdev == dev) {
dst_release(dst);
dev->stats.collisions++;
DEV_STATS_INC(dev, collisions);
goto tx_error;
}
@ -267,7 +267,7 @@ xmit:
tx_error_icmp:
dst_link_failure(skb);
tx_error:
dev->stats.tx_errors++;
DEV_STATS_INC(dev, tx_errors);
kfree_skb(skb);
return NETDEV_TX_OK;
}
@ -304,7 +304,7 @@ static netdev_tx_t vti_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
return vti_xmit(skb, dev, &fl);
tx_err:
dev->stats.tx_errors++;
DEV_STATS_INC(dev, tx_errors);
kfree_skb(skb);
return NETDEV_TX_OK;
}

2
net/ipv4/ipip.c
Просмотреть файл

@ -310,7 +310,7 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb,
tx_error:
kfree_skb(skb);
dev->stats.tx_errors++;
DEV_STATS_INC(dev, tx_errors);
return NETDEV_TX_OK;
}

12
net/ipv4/ipmr.c
Просмотреть файл

@ -506,8 +506,8 @@ static netdev_tx_t reg_vif_xmit(struct sk_buff *skb, struct net_device *dev)
return err;
}
dev->stats.tx_bytes += skb->len;
dev->stats.tx_packets++;
DEV_STATS_ADD(dev, tx_bytes, skb->len);
DEV_STATS_INC(dev, tx_packets);
rcu_read_lock();
/* Pairs with WRITE_ONCE() in vif_add() and vif_delete() */
@ -1839,8 +1839,8 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
if (vif->flags & VIFF_REGISTER) {
WRITE_ONCE(vif->pkt_out, vif->pkt_out + 1);
WRITE_ONCE(vif->bytes_out, vif->bytes_out + skb->len);
vif_dev->stats.tx_bytes += skb->len;
vif_dev->stats.tx_packets++;
DEV_STATS_ADD(vif_dev, tx_bytes, skb->len);
DEV_STATS_INC(vif_dev, tx_packets);
ipmr_cache_report(mrt, skb, vifi, IGMPMSG_WHOLEPKT);
goto out_free;
}
@ -1898,8 +1898,8 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
if (vif->flags & VIFF_TUNNEL) {
ip_encap(net, skb, vif->local, vif->remote);
/* FIXME: extra output firewall step used to be here. --RR */
vif_dev->stats.tx_packets++;
vif_dev->stats.tx_bytes += skb->len;
DEV_STATS_INC(vif_dev, tx_packets);
DEV_STATS_ADD(vif_dev, tx_bytes, skb->len);
}
IPCB(skb)->flags |= IPSKB_FORWARDED;