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bareudp: Handle stats using NETDEV_PCPU_STAT_DSTATS.

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Bareudp uses the TSTATS infrastructure (dev_sw_netstats_*()) for RX
packet counters. It was also recently converted to use the device core
stats (dev_core_stats_*()) for RX and TX drops (see commit 788d5d655b
("bareudp: Use pcpu stats to update rx_dropped counter.")).

Since core stats are to be avoided in drivers, and for consistency with
VXLAN and Geneve, let's convert packet stats handling to DSTATS, which
can handle RX/TX stats and packet drops. Statistics that don't fit
DSTATS are still updated atomically with DEV_STATS_INC().

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://patch.msgid.link/0f4f8448db3ff449ac6e939872b28cf3f8982da7.1733313925.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Guillaume Nault 2024-12-04 13:11:32 +01:00 • committed by Jakub Kicinski
parent 6fa6de3022
commit c77200c074
1 changed files with 8 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
drivers/net/bareudp.c
View file

@ -84,7 +84,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
if (skb_copy_bits(skb, BAREUDP_BASE_HLEN, &ipversion,
sizeof(ipversion))) {
dev_core_stats_rx_dropped_inc(bareudp->dev);
dev_dstats_rx_dropped(bareudp->dev);
goto drop;
}
ipversion >>= 4;
@ -94,7 +94,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
} else if (ipversion == 6 && bareudp->multi_proto_mode) {
proto = htons(ETH_P_IPV6);
} else {
dev_core_stats_rx_dropped_inc(bareudp->dev);
dev_dstats_rx_dropped(bareudp->dev);
goto drop;
}
} else if (bareudp->ethertype == htons(ETH_P_MPLS_UC)) {
@ -108,7 +108,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
ipv4_is_multicast(tunnel_hdr->daddr)) {
proto = htons(ETH_P_MPLS_MC);
} else {
dev_core_stats_rx_dropped_inc(bareudp->dev);
dev_dstats_rx_dropped(bareudp->dev);
goto drop;
}
} else {
@ -124,7 +124,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
(addr_type & IPV6_ADDR_MULTICAST)) {
proto = htons(ETH_P_MPLS_MC);
} else {
dev_core_stats_rx_dropped_inc(bareudp->dev);
dev_dstats_rx_dropped(bareudp->dev);
goto drop;
}
}
@ -136,7 +136,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
proto,
!net_eq(bareudp->net,
dev_net(bareudp->dev)))) {
dev_core_stats_rx_dropped_inc(bareudp->dev);
dev_dstats_rx_dropped(bareudp->dev);
goto drop;
}
@ -144,7 +144,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
tun_dst = udp_tun_rx_dst(skb, family, key, 0, 0);
if (!tun_dst) {
dev_core_stats_rx_dropped_inc(bareudp->dev);
dev_dstats_rx_dropped(bareudp->dev);
goto drop;
}
skb_dst_set(skb, &tun_dst->dst);
@ -194,7 +194,7 @@ static int bareudp_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
len = skb->len;
err = gro_cells_receive(&bareudp->gro_cells, skb);
if (likely(err == NET_RX_SUCCESS))
dev_sw_netstats_rx_add(bareudp->dev, len);
dev_dstats_rx_add(bareudp->dev, len);
return 0;
drop:
@ -589,7 +589,7 @@ static void bareudp_setup(struct net_device *dev)
dev->priv_flags |= IFF_NO_QUEUE;
dev->lltx = true;
dev->flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST;
dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
dev->pcpu_stat_type = NETDEV_PCPU_STAT_DSTATS;
}
static int bareudp_validate(struct nlattr *tb[], struct nlattr *data[],