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Message-ID: <1379416743.29845.15.camel@edumazet-glaptop>
Date: Tue, 17 Sep 2013 04:19:03 -0700
From: Eric Dumazet <eric.dumazet@...il.com>
To: Stephen Hemminger <stephen@...workplumber.org>
Cc: netdev <netdev@...r.kernel.org>
Subject: [PATCH iproute2] tc: support TCA_STATS_RATE_EST64
From: Eric Dumazet <edumazet@...gle.com>
Since linux-3.11, rate estimator can provide TCA_STATS_RATE_EST64
when rate (bytes per second) is above 2^32 (~34 Mbits)
Change tc to use this attribute for high rates.
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
tc/tc_util.c | 26 ++++++++++++++++++++------
tc/tc_util.h | 4 ++--
2 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/tc/tc_util.c b/tc/tc_util.c
index 8114c97..be3ed07 100644
--- a/tc/tc_util.c
+++ b/tc/tc_util.c
@@ -171,20 +171,24 @@ int get_rate(unsigned *rate, const char *str)
return 0;
}
-void print_rate(char *buf, int len, __u32 rate)
+void print_rate(char *buf, int len, __u64 rate)
{
double tmp = (double)rate*8;
extern int use_iec;
if (use_iec) {
- if (tmp >= 1000.0*1024.0*1024.0)
+ if (tmp >= 1000.0*1024.0*1024.0*1024.0)
+ snprintf(buf, len, "%.0fGibit", tmp/(1024.0*1024.0*1024.0));
+ else if (tmp >= 1000.0*1024.0*1024.0)
snprintf(buf, len, "%.0fMibit", tmp/(1024.0*1024.0));
else if (tmp >= 1000.0*1024)
snprintf(buf, len, "%.0fKibit", tmp/1024);
else
snprintf(buf, len, "%.0fbit", tmp);
} else {
- if (tmp >= 1000.0*1000000.0)
+ if (tmp >= 1000.0*1000000000.0)
+ snprintf(buf, len, "%.0fGbit", tmp/1000000000.0);
+ else if (tmp >= 1000.0*1000000.0)
snprintf(buf, len, "%.0fMbit", tmp/1000000.0);
else if (tmp >= 1000.0 * 1000.0)
snprintf(buf, len, "%.0fKbit", tmp/1000.0);
@@ -193,7 +197,7 @@ void print_rate(char *buf, int len, __u32 rate)
}
}
-char * sprint_rate(__u32 rate, char *buf)
+char * sprint_rate(__u64 rate, char *buf)
{
print_rate(buf, SPRINT_BSIZE-1, rate);
return buf;
@@ -460,9 +464,19 @@ void print_tcstats2_attr(FILE *fp, struct rtattr *rta, char *prefix, struct rtat
q.drops, q.overlimits, q.requeues);
}
- if (tbs[TCA_STATS_RATE_EST]) {
+ if (tbs[TCA_STATS_RATE_EST64]) {
+ struct gnet_stats_rate_est64 re = {0};
+
+ memcpy(&re, RTA_DATA(tbs[TCA_STATS_RATE_EST64]),
+ MIN(RTA_PAYLOAD(tbs[TCA_STATS_RATE_EST64]),
+ sizeof(re)));
+ fprintf(fp, "\n%srate %s %llupps ",
+ prefix, sprint_rate(re.bps, b1), re.pps);
+ } else if (tbs[TCA_STATS_RATE_EST]) {
struct gnet_stats_rate_est re = {0};
- memcpy(&re, RTA_DATA(tbs[TCA_STATS_RATE_EST]), MIN(RTA_PAYLOAD(tbs[TCA_STATS_RATE_EST]), sizeof(re)));
+
+ memcpy(&re, RTA_DATA(tbs[TCA_STATS_RATE_EST]),
+ MIN(RTA_PAYLOAD(tbs[TCA_STATS_RATE_EST]), sizeof(re)));
fprintf(fp, "\n%srate %s %upps ",
prefix, sprint_rate(re.bps, b1), re.pps);
}
diff --git a/tc/tc_util.h b/tc/tc_util.h
index 4f54436..7c3709f 100644
--- a/tc/tc_util.h
+++ b/tc/tc_util.h
@@ -63,12 +63,12 @@ extern int get_size_and_cell(unsigned *size, int *cell_log, char *str);
extern int get_time(unsigned *time, const char *str);
extern int get_linklayer(unsigned *val, const char *arg);
-extern void print_rate(char *buf, int len, __u32 rate);
+extern void print_rate(char *buf, int len, __u64 rate);
extern void print_size(char *buf, int len, __u32 size);
extern void print_qdisc_handle(char *buf, int len, __u32 h);
extern void print_time(char *buf, int len, __u32 time);
extern void print_linklayer(char *buf, int len, unsigned linklayer);
-extern char * sprint_rate(__u32 rate, char *buf);
+extern char * sprint_rate(__u64 rate, char *buf);
extern char * sprint_size(__u32 size, char *buf);
extern char * sprint_qdisc_handle(__u32 h, char *buf);
extern char * sprint_tc_classid(__u32 h, char *buf);
--
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