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authorThomas Huehn <thomas@net.t-labs.tu-berlin.de>2015-03-24 21:09:41 +0100
committerJohannes Berg <johannes.berg@intel.com>2015-04-01 20:44:32 +0200
commit50e55a8ea76fb593403cc09767b6371c17364ba8 (patch)
tree54362ad0fe0bf1506ee1a3cedf213108b60f4e86 /net/mac80211/rc80211_minstrel_ht_debugfs.c
parent6a27b2c40b4829e625bc1dfdd0705c5ece720ab4 (diff)
mac80211: add max lossless throughput per rate
This patch adds the new statistic "maximum possible lossless throughput" to Minstrels and Minstrel-HTs rc_stats (in debugfs). This enables comprehensive comparison between current per-rate throughput and max. achievable per-rate throughput. Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de> Acked-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rc80211_minstrel_ht_debugfs.c')
-rw-r--r--net/mac80211/rc80211_minstrel_ht_debugfs.c24
1 files changed, 14 insertions, 10 deletions
diff --git a/net/mac80211/rc80211_minstrel_ht_debugfs.c b/net/mac80211/rc80211_minstrel_ht_debugfs.c
index 721cf74ea9a6..135ed39790c0 100644
--- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
@@ -19,7 +19,7 @@ static char *
minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
{
const struct mcs_group *mg;
- unsigned int j, tp_avg, prob, eprob, tx_time;
+ unsigned int j, tp_max, tp_avg, prob, eprob, tx_time;
char htmode = '2';
char gimode = 'L';
u32 gflags;
@@ -79,14 +79,16 @@ minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
/* tx_time[rate(i)] in usec */
tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
- p += sprintf(p, "%6u ", tx_time);
+ p += sprintf(p, "%6u ", tx_time);
- tp_avg = minstrel_ht_get_tp_avg(mi, i, j);
+ tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
+ tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma);
prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
- p += sprintf(p, "%4u.%1u %3u.%1u %3u.%1u "
+ p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u %3u.%1u "
"%3u %3u %-3u %9llu %-9llu\n",
+ tp_max / 10, tp_max % 10,
tp_avg / 10, tp_avg % 10,
eprob / 10, eprob % 10,
prob / 10, prob % 10,
@@ -125,11 +127,11 @@ minstrel_ht_stats_open(struct inode *inode, struct file *file)
p = ms->buf;
p += sprintf(p, "\n");
- p += sprintf(p, " best ________rate______ "
+ p += sprintf(p, " best ____________rate__________ "
"__statistics__ ________last_______ "
"______sum-of________\n");
- p += sprintf(p, "mode guard # rate [name idx airtime] [ ø(tp) "
- "ø(prob)] [prob.|retry|suc|att] [#success | "
+ p += sprintf(p, "mode guard # rate [name idx airtime max_tp] "
+ "[ ø(tp) ø(prob)] [prob.|retry|suc|att] [#success | "
"#attempts]\n");
p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p);
@@ -163,7 +165,7 @@ static char *
minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
{
const struct mcs_group *mg;
- unsigned int j, tp_avg, prob, eprob, tx_time;
+ unsigned int j, tp_max, tp_avg, prob, eprob, tx_time;
char htmode = '2';
char gimode = 'L';
u32 gflags;
@@ -222,11 +224,13 @@ minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
tx_time = DIV_ROUND_CLOSEST(mg->duration[j], 1000);
p += sprintf(p, "%u,", tx_time);
- tp_avg = minstrel_ht_get_tp_avg(mi, i, j);
+ tp_max = minstrel_ht_get_tp_avg(mi, i, j, MINSTREL_FRAC(100, 100));
+ tp_avg = minstrel_ht_get_tp_avg(mi, i, j, mrs->prob_ewma);
prob = MINSTREL_TRUNC(mrs->cur_prob * 1000);
eprob = MINSTREL_TRUNC(mrs->prob_ewma * 1000);
- p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u,%u,%u,%llu,%llu,",
+ p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u.%u,%u,%u,%u,%llu,%llu,",
+ tp_max / 10, tp_max % 10,
tp_avg / 10, tp_avg % 10,
eprob / 10, eprob % 10,
prob / 10, prob % 10,