From: Eric Dumazet Date: Tue, 15 Nov 2022 08:53:57 +0000 (+0000) Subject: ipv6: tunnels: use DEV_STATS_INC() X-Git-Tag: v6.6.17~5932^2~204^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2fad1ba354d4a82b1b635a78f25d9682d4febb5e;p=platform%2Fkernel%2Flinux-rpi.git ipv6: 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|ADD}() to update dev->stats fields. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 7673e1d..89f5f0f 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -895,7 +895,6 @@ static netdev_tx_t ip6gre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); - struct net_device_stats *stats = &t->dev->stats; __be16 payload_protocol; int ret; @@ -925,8 +924,8 @@ static netdev_tx_t ip6gre_tunnel_xmit(struct sk_buff *skb, tx_err: if (!t->parms.collect_md || !IS_ERR(skb_tunnel_info_txcheck(skb))) - stats->tx_errors++; - stats->tx_dropped++; + DEV_STATS_INC(dev, tx_errors); + DEV_STATS_INC(dev, tx_dropped); kfree_skb(skb); return NETDEV_TX_OK; } @@ -937,7 +936,6 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb, struct ip_tunnel_info *tun_info = NULL; struct ip6_tnl *t = netdev_priv(dev); struct dst_entry *dst = skb_dst(skb); - struct net_device_stats *stats; bool truncate = false; int encap_limit = -1; __u8 dsfield = false; @@ -1086,10 +1084,9 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb, return NETDEV_TX_OK; tx_err: - stats = &t->dev->stats; if (!IS_ERR(tun_info)) - stats->tx_errors++; - stats->tx_dropped++; + DEV_STATS_INC(dev, tx_errors); + DEV_STATS_INC(dev, tx_dropped); kfree_skb(skb); return NETDEV_TX_OK; } diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 2fb4c6a..47b6607 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -803,8 +803,8 @@ static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb, (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; } @@ -812,8 +812,8 @@ static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb, 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; @@ -824,8 +824,8 @@ static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb, /* Warning: All skb pointers will be invalidated! */ if (tunnel->dev->type == ARPHRD_ETHER) { if (!pskb_may_pull(skb, ETH_HLEN)) { - tunnel->dev->stats.rx_length_errors++; - tunnel->dev->stats.rx_errors++; + DEV_STATS_INC(tunnel->dev, rx_length_errors); + DEV_STATS_INC(tunnel->dev, rx_errors); goto drop; } @@ -849,8 +849,8 @@ static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb, &ipv6h->saddr, ipv6_get_dsfield(ipv6h)); 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; } } @@ -1071,7 +1071,6 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield, { struct ip6_tnl *t = netdev_priv(dev); struct net *net = t->net; - struct net_device_stats *stats = &t->dev->stats; struct ipv6hdr *ipv6h; struct ipv6_tel_txoption opt; struct dst_entry *dst = NULL, *ndst = NULL; @@ -1166,7 +1165,7 @@ route_lookup: tdev = dst->dev; if (tdev == dev) { - stats->collisions++; + DEV_STATS_INC(dev, collisions); net_warn_ratelimited("%s: Local routing loop detected!\n", t->parms.name); goto tx_err_dst_release; @@ -1265,7 +1264,7 @@ route_lookup: ip6tunnel_xmit(NULL, skb, dev); return 0; tx_err_link_failure: - stats->tx_carrier_errors++; + DEV_STATS_INC(dev, tx_carrier_errors); dst_link_failure(skb); tx_err_dst_release: dst_release(dst); @@ -1408,7 +1407,6 @@ static netdev_tx_t ip6_tnl_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); - struct net_device_stats *stats = &t->dev->stats; u8 ipproto; int ret; @@ -1438,8 +1436,8 @@ ip6_tnl_start_xmit(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_OK; tx_err: - stats->tx_errors++; - stats->tx_dropped++; + DEV_STATS_INC(dev, tx_errors); + DEV_STATS_INC(dev, tx_dropped); kfree_skb(skb); return NETDEV_TX_OK; } diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c index 151337d..10b2228 100644 --- a/net/ipv6/ip6_vti.c +++ b/net/ipv6/ip6_vti.c @@ -317,7 +317,7 @@ static int vti6_input_proto(struct sk_buff *skb, int nexthdr, __be32 spi, ipv6h = ipv6_hdr(skb); if (!ip6_tnl_rcv_ctl(t, &ipv6h->daddr, &ipv6h->saddr)) { - t->dev->stats.rx_dropped++; + DEV_STATS_INC(t->dev, rx_dropped); rcu_read_unlock(); goto discard; } @@ -359,8 +359,8 @@ static int vti6_rcv_cb(struct sk_buff *skb, int err) dev = t->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; } @@ -446,7 +446,6 @@ static int vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) { struct ip6_tnl *t = netdev_priv(dev); - struct net_device_stats *stats = &t->dev->stats; struct dst_entry *dst = skb_dst(skb); struct net_device *tdev; struct xfrm_state *x; @@ -506,7 +505,7 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl) tdev = dst->dev; if (tdev == dev) { - stats->collisions++; + DEV_STATS_INC(dev, collisions); net_warn_ratelimited("%s: Local routing loop detected!\n", t->parms.name); goto tx_err_dst_release; @@ -544,7 +543,7 @@ xmit: return 0; tx_err_link_failure: - stats->tx_carrier_errors++; + DEV_STATS_INC(dev, tx_carrier_errors); dst_link_failure(skb); tx_err_dst_release: dst_release(dst); @@ -555,7 +554,6 @@ static netdev_tx_t vti6_tnl_xmit(struct sk_buff *skb, struct net_device *dev) { struct ip6_tnl *t = netdev_priv(dev); - struct net_device_stats *stats = &t->dev->stats; struct flowi fl; int ret; @@ -591,8 +589,8 @@ vti6_tnl_xmit(struct sk_buff *skb, struct net_device *dev) return NETDEV_TX_OK; tx_err: - stats->tx_errors++; - stats->tx_dropped++; + DEV_STATS_INC(dev, tx_errors); + DEV_STATS_INC(dev, tx_dropped); kfree_skb(skb); return NETDEV_TX_OK; } diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index facdc78..23e7665 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -608,8 +608,8 @@ static netdev_tx_t reg_vif_xmit(struct sk_buff *skb, if (ip6mr_fib_lookup(net, &fl6, &mrt) < 0) goto tx_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(); ip6mr_cache_report(mrt, skb, READ_ONCE(mrt->mroute_reg_vif_num), MRT6MSG_WHOLEPKT); @@ -618,7 +618,7 @@ static netdev_tx_t reg_vif_xmit(struct sk_buff *skb, return NETDEV_TX_OK; tx_err: - dev->stats.tx_errors++; + DEV_STATS_INC(dev, tx_errors); kfree_skb(skb); return NETDEV_TX_OK; } @@ -2044,8 +2044,8 @@ static int ip6mr_forward2(struct net *net, struct mr_table *mrt, if (vif->flags & MIFF_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); ip6mr_cache_report(mrt, skb, vifi, MRT6MSG_WHOLEPKT); goto out_free; }