mac80211: minstrel_ht: add basic support for VHT rates <= 3SS@80MHz
When the new CONFIG_MAC80211_RC_MINSTREL_VHT is not set (default 'N'),
there is no behavioral change including in sampling and MCS_GROUP_RATES
remains 8.
Otherwise MCS_GROUP_RATES is 10, and a module parameter *vht_only*
(default 'true'), restricts the rates selection to VHT when VHT is
supported.
Regarding the debugfs stats buffer:
It is explicitly increased from 8k to 32k to fit every rates incl. when
both HT and VHT rates are enabled, as for the format, before:
type rate tpt eprob *prob ret *ok(*cum) ok( cum)
HT20/LGI ABCDP MCS0 0.0 0.0 0.0 1 0( 0) 0( 0)
after:
type rate tpt eprob *prob ret *ok(*cum) ok( cum)
HT20/LGI ABCDP MCS0 0.0 0.0 0.0 1 0( 0) 0( 0)
VHT40/LGI MCS5/2 0.0 0.0 0.0 0 0( 0) 0( 0)
Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Cc: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/rc80211_minstrel_ht_debugfs.c b/net/mac80211/rc80211_minstrel_ht_debugfs.c
index d2f53b8..52bb6ef 100644
--- a/net/mac80211/rc80211_minstrel_ht_debugfs.c
+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
@@ -29,6 +29,8 @@
mg = &minstrel_mcs_groups[i];
if (mg->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
htmode = '4';
+ else if (mg->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
+ htmode = '8';
if (mg->flags & IEEE80211_TX_RC_SHORT_GI)
gimode = 'S';
@@ -41,9 +43,11 @@
continue;
if (i == MINSTREL_CCK_GROUP)
- p += sprintf(p, "CCK/%cP ", j < 4 ? 'L' : 'S');
+ p += sprintf(p, " CCK/%cP ", j < 4 ? 'L' : 'S');
+ else if (i >= MINSTREL_VHT_GROUP_0)
+ p += sprintf(p, "VHT%c0/%cGI ", htmode, gimode);
else
- p += sprintf(p, "HT%c0/%cGI ", htmode, gimode);
+ p += sprintf(p, " HT%c0/%cGI ", htmode, gimode);
*(p++) = (idx == mi->max_tp_rate[0]) ? 'A' : ' ';
*(p++) = (idx == mi->max_tp_rate[1]) ? 'B' : ' ';
@@ -53,9 +57,11 @@
if (i == MINSTREL_CCK_GROUP) {
int r = bitrates[j % 4];
- p += sprintf(p, " %2u.%1uM", r / 10, r % 10);
+ p += sprintf(p, " %2u.%1uM ", r / 10, r % 10);
+ } else if (i >= MINSTREL_VHT_GROUP_0) {
+ p += sprintf(p, " MCS%-1u/%1u", j, mg->streams);
} else {
- p += sprintf(p, " MCS%-2u", (mg->streams - 1) * 8 + j);
+ p += sprintf(p, " MCS%-2u ", (mg->streams - 1) * 8 + j);
}
tp = mr->cur_tp / 10;
@@ -94,19 +100,20 @@
return ret;
}
- ms = kmalloc(8192, GFP_KERNEL);
+ ms = kmalloc(32768, GFP_KERNEL);
if (!ms)
return -ENOMEM;
file->private_data = ms;
p = ms->buf;
- p += sprintf(p, "type rate tpt eprob *prob "
+ p += sprintf(p, " type rate tpt eprob *prob "
"ret *ok(*cum) ok( cum)\n");
-
p = minstrel_ht_stats_dump(mi, MINSTREL_CCK_GROUP, p);
for (i = 0; i < MINSTREL_CCK_GROUP; i++)
p = minstrel_ht_stats_dump(mi, i, p);
+ for (i++; i < ARRAY_SIZE(mi->groups); i++)
+ p = minstrel_ht_stats_dump(mi, i, p);
p += sprintf(p, "\nTotal packet count:: ideal %d "
"lookaround %d\n",
@@ -117,7 +124,7 @@
MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
ms->len = p - ms->buf;
- WARN_ON(ms->len + sizeof(*ms) > 8192);
+ WARN_ON(ms->len + sizeof(*ms) > 32768);
return nonseekable_open(inode, file);
}