[PATCH 6.0 0516/1073] ipvs: use u64_stats_t for the per-cpu counters

Greg Kroah-Hartman
2022-12-28T16:02:46Z

From: Julian Anastasov <ja@ssi.bg>

[ Upstream commit 1dbd8d9a82e3f26b9d063292d47ece673f48fce2 ]

Use the provided u64_stats_t type to avoid
load/store tearing.

Fixes: 316580b69d0a ("u64_stats: provide u64_stats_t type")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Cc: yunhong-cgl jiang <xintian1976@gmail.com>
Cc: "dust.li" <dust.li@linux.alibaba.com>
Reviewed-by: Jiri Wiesner <jwiesner@suse.de>
Tested-by: Jiri Wiesner <jwiesner@suse.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/net/ip_vs.h | 10 +++++-----
net/netfilter/ipvs/ip_vs_core.c | 30 +++++++++++++++---------------
net/netfilter/ipvs/ip_vs_ctl.c | 10 +++++-----
net/netfilter/ipvs/ip_vs_est.c | 20 ++++++++++----------
4 files changed, 35 insertions(+), 35 deletions(-)

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index ff1804a0c469..1fca6a88114a 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -351,11 +351,11 @@ struct ip_vs_seq {

/* counters per cpu */
struct ip_vs_counters {
- __u64 conns; /* connections scheduled */
- __u64 inpkts; /* incoming packets */
- __u64 outpkts; /* outgoing packets */
- __u64 inbytes; /* incoming bytes */
- __u64 outbytes; /* outgoing bytes */
+ u64_stats_t conns; /* connections scheduled */
+ u64_stats_t inpkts; /* incoming packets */
+ u64_stats_t outpkts; /* outgoing packets */
+ u64_stats_t inbytes; /* incoming bytes */
+ u64_stats_t outbytes; /* outgoing bytes */
};
/* Stats per cpu */
struct ip_vs_cpu_stats {
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 51ad557a525b..b5ae419661b8 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -132,21 +132,21 @@ ip_vs_in_stats(struct ip_vs_conn *cp, struct sk_buff *skb)

s = this_cpu_ptr(dest->stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.inpkts++;
- s->cnt.inbytes += skb->len;
+ u64_stats_inc(&s->cnt.inpkts);
+ u64_stats_add(&s->cnt.inbytes, skb->len);
u64_stats_update_end(&s->syncp);

svc = rcu_dereference(dest->svc);
s = this_cpu_ptr(svc->stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.inpkts++;
- s->cnt.inbytes += skb->len;
+ u64_stats_inc(&s->cnt.inpkts);
+ u64_stats_add(&s->cnt.inbytes, skb->len);
u64_stats_update_end(&s->syncp);

s = this_cpu_ptr(ipvs->tot_stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.inpkts++;
- s->cnt.inbytes += skb->len;
+ u64_stats_inc(&s->cnt.inpkts);
+ u64_stats_add(&s->cnt.inbytes, skb->len);
u64_stats_update_end(&s->syncp);

local_bh_enable();
@@ -168,21 +168,21 @@ ip_vs_out_stats(struct ip_vs_conn *cp, struct sk_buff *skb)

s = this_cpu_ptr(dest->stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.outpkts++;
- s->cnt.outbytes += skb->len;
+ u64_stats_inc(&s->cnt.outpkts);
+ u64_stats_add(&s->cnt.outbytes, skb->len);
u64_stats_update_end(&s->syncp);

svc = rcu_dereference(dest->svc);
s = this_cpu_ptr(svc->stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.outpkts++;
- s->cnt.outbytes += skb->len;
+ u64_stats_inc(&s->cnt.outpkts);
+ u64_stats_add(&s->cnt.outbytes, skb->len);
u64_stats_update_end(&s->syncp);

s = this_cpu_ptr(ipvs->tot_stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.outpkts++;
- s->cnt.outbytes += skb->len;
+ u64_stats_inc(&s->cnt.outpkts);
+ u64_stats_add(&s->cnt.outbytes, skb->len);
u64_stats_update_end(&s->syncp);

local_bh_enable();
@@ -200,17 +200,17 @@ ip_vs_conn_stats(struct ip_vs_conn *cp, struct ip_vs_service *svc)

s = this_cpu_ptr(cp->dest->stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.conns++;
+ u64_stats_inc(&s->cnt.conns);
u64_stats_update_end(&s->syncp);

s = this_cpu_ptr(svc->stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.conns++;
+ u64_stats_inc(&s->cnt.conns);
u64_stats_update_end(&s->syncp);

s = this_cpu_ptr(ipvs->tot_stats.cpustats);
u64_stats_update_begin(&s->syncp);
- s->cnt.conns++;
+ u64_stats_inc(&s->cnt.conns);
u64_stats_update_end(&s->syncp);

local_bh_enable();
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 5a7349002508..65bda976845d 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -2297,11 +2297,11 @@ static int ip_vs_stats_percpu_show(struct seq_file *seq, void *v)

do {
start = u64_stats_fetch_begin(&u->syncp);
- conns = u->cnt.conns;
- inpkts = u->cnt.inpkts;
- outpkts = u->cnt.outpkts;
- inbytes = u->cnt.inbytes;
- outbytes = u->cnt.outbytes;
+ conns = u64_stats_read(&u->cnt.conns);
+ inpkts = u64_stats_read(&u->cnt.inpkts);
+ outpkts = u64_stats_read(&u->cnt.outpkts);
+ inbytes = u64_stats_read(&u->cnt.inbytes);
+ outbytes = u64_stats_read(&u->cnt.outbytes);
} while (u64_stats_fetch_retry(&u->syncp, start));

seq_printf(seq, "%3X %8LX %8LX %8LX %16LX %16LX\n",
diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c
index 9a1a7af6a186..f53150d82a92 100644
--- a/net/netfilter/ipvs/ip_vs_est.c
+++ b/net/netfilter/ipvs/ip_vs_est.c
@@ -67,11 +67,11 @@ static void ip_vs_read_cpu_stats(struct ip_vs_kstats *sum,
if (add) {
do {
start = u64_stats_fetch_begin(&s->syncp);
- conns = s->cnt.conns;
- inpkts = s->cnt.inpkts;
- outpkts = s->cnt.outpkts;
- inbytes = s->cnt.inbytes;
- outbytes = s->cnt.outbytes;
+ conns = u64_stats_read(&s->cnt.conns);
+ inpkts = u64_stats_read(&s->cnt.inpkts);
+ outpkts = u64_stats_read(&s->cnt.outpkts);
+ inbytes = u64_stats_read(&s->cnt.inbytes);
+ outbytes = u64_stats_read(&s->cnt.outbytes);
} while (u64_stats_fetch_retry(&s->syncp, start));
sum->conns += conns;
sum->inpkts += inpkts;
@@ -82,11 +82,11 @@ static void ip_vs_read_cpu_stats(struct ip_vs_kstats *sum,
add = true;
do {
start = u64_stats_fetch_begin(&s->syncp);
- sum->conns = s->cnt.conns;
- sum->inpkts = s->cnt.inpkts;
- sum->outpkts = s->cnt.outpkts;
- sum->inbytes = s->cnt.inbytes;
- sum->outbytes = s->cnt.outbytes;
+ sum->conns = u64_stats_read(&s->cnt.conns);
+ sum->inpkts = u64_stats_read(&s->cnt.inpkts);
+ sum->outpkts = u64_stats_read(&s->cnt.outpkts);
+ sum->inbytes = u64_stats_read(&s->cnt.inbytes);
+ sum->outbytes = u64_stats_read(&s->cnt.outbytes);
} while (u64_stats_fetch_retry(&s->syncp, start));
}
}
--
2.35.1