Author: tuexen
Date: Sat Nov 1 10:35:45 2014
New Revision: 273925
URL: https://svnweb.freebsd.org/changeset/base/273925
Log:
Don't zero the stats before they are read out.
MFC after: 3 days
Modified:
head/sys/netinet/sctp_sysctl.c
Modified: head/sys/netinet/sctp_sysctl.c
==============================================================================
--- head/sys/netinet/sctp_sysctl.c Sat Nov 1 09:10:21 2014
(r273924)
+++ head/sys/netinet/sctp_sysctl.c Sat Nov 1 10:35:45 2014
(r273925)
@@ -636,26 +636,27 @@ sctp_sysctl_handle_stats(SYSCTL_HANDLER_
int error;
#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
- struct sctpstat sb_temp;
struct sctpstat *sarry;
struct sctpstat sb;
int cpu;
+
#endif
+ struct sctpstat sb_temp;
if ((req->newptr != NULL) &&
(req->newlen != sizeof(struct sctpstat))) {
return (EINVAL);
}
-
-#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
- memset(&sb, 0, sizeof(sb));
- memset(&sb_temp, 0, sizeof(sb_temp));
+ memset(&sb_temp, 0, sizeof(struct sctpstat));
if (req->newptr != NULL) {
- error = SYSCTL_IN(req, &sb_temp, sizeof(sb_temp));
- if (error != 0)
+ error = SYSCTL_IN(req, &sb_temp, sizeof(struct sctpstat));
+ if (error != 0) {
return (error);
+ }
}
+#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
+ memset(&sb, 0, sizeof(sb));
for (cpu = 0; cpu < mp_maxid; cpu++) {
sarry = &SCTP_BASE_STATS[cpu];
if (sarry->sctps_discontinuitytime.tv_sec >
sb.sctps_discontinuitytime.tv_sec) {
@@ -783,15 +784,19 @@ sctp_sysctl_handle_stats(SYSCTL_HANDLER_
sb.sctps_send_burst_avoid += sarry->sctps_send_burst_avoid;
sb.sctps_send_cwnd_avoid += sarry->sctps_send_cwnd_avoid;
sb.sctps_fwdtsn_map_over += sarry->sctps_fwdtsn_map_over;
- if (req->newptr != NULL)
+ if (req->newptr != NULL) {
memcpy(sarry, &sb_temp, sizeof(struct sctpstat));
+ }
}
error = SYSCTL_OUT(req, &sb, sizeof(struct sctpstat));
#else
- error = SYSCTL_IN(req, &SCTP_BASE_STATS, sizeof(struct sctpstat));
- if (error)
- return (error);
error = SYSCTL_OUT(req, &SCTP_BASE_STATS, sizeof(struct sctpstat));
+ if (error != 0) {
+ return (error);
+ }
+ if (req->newptr != NULL) {
+ memcpy(&SCTP_BASE_STATS, &sb_temp, sizeof(struct sctpstat));
+ }
#endif
return (error);
}
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