ipvs: use u64_stats_t for the per-cpu counters

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>

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index e5582c0..a4d4413 100644 (file)
--- 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 fcdaef1..2fcc265 100644 (file)
--- 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->s.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->s.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->s.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 ec6db86..5f9cc2e 100644 (file)
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -2335,11 +2335,11 @@ 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 9a1a7af..f53150d 100644 (file)
--- 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));
                }
        }