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Date: Tue, 15 Nov 2022 08:53:58 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org, eric.dumazet@...il.com,
Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 4/4] 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@...gle.com>
---
net/ipv4/ip_gre.c | 10 +++++-----
net/ipv4/ip_tunnel.c | 32 ++++++++++++++++----------------
net/ipv4/ip_vti.c | 20 ++++++++++----------
net/ipv4/ipip.c | 2 +-
net/ipv4/ipmr.c | 12 ++++++------
5 files changed, 38 insertions(+), 38 deletions(-)
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index d8ee5238c3954386263598fff7c7b565de348d64..a4ccef3e6935b5c1fd1885920becccba6b8a6d3f 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -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;
}
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 019f3b0839c5225c7055f97cf15c96533fe32a2f..de90b09dfe78fc4510985dd436c017d3c46f054c 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -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 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
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);
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index 8c2bd1d9ddce3891998ce82417bd8c535ee20246..53bfd8af69203619cd775171c2e8b43cca3449b1 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -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 @@ static netdev_tx_t vti_xmit(struct sk_buff *skb, struct net_device *dev,
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;
}
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 180f9daf5bec577b8f6062185ea13f7af9e5fe33..abea77759b7e4a6b2736d936db387abbf9db1515 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -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;
}
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index e04544ac4b4545f5beb1fc7c5dc864aefc1b7324..b58df3c1bf7dcf0d68585ef984a7327930273fa8 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -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;
--
2.38.1.431.g37b22c650d-goog
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