diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-11-19 13:26:11 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-11-19 16:09:08 (GMT) |
| commit | 64491f0ec8b653560a030022dccfce67ad353d81 (patch) | |
| tree | cae81fcb3ee62062eb6f327827c8da90cef853c5 | |
| parent | a58ce43f2fb17b728395ff530f019ca53c80145f (diff) | |
| download | linux-64491f0ec8b653560a030022dccfce67ad353d81.tar.xz | |
mac80211: add per-station HT capability file
This is sometimes useful to debug HT issues
as it shows what exactly the stack thinks
the peer supports.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | net/mac80211/debugfs_sta.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c index f043c290..3f41608 100644 --- a/net/mac80211/debugfs_sta.c +++ b/net/mac80211/debugfs_sta.c @@ -157,6 +157,34 @@ static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, } STA_OPS(agg_status); +static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf, + size_t count, loff_t *ppos) +{ + char buf[200], *p = buf; + int i; + struct sta_info *sta = file->private_data; + struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap; + + p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n", + htc->ht_supported ? "" : "not "); + if (htc->ht_supported) { + p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.2x\n", htc->cap); + p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n", + htc->ampdu_factor, htc->ampdu_density); + p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:"); + for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) + p += scnprintf(p, sizeof(buf)+buf-p, " %.2x", + htc->mcs.rx_mask[i]); + p += scnprintf(p, sizeof(buf)+buf-p, "\nMCS rx highest: %d\n", + le16_to_cpu(htc->mcs.rx_highest)); + p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n", + htc->mcs.tx_params); + } + + return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); +} +STA_OPS(ht_capa); + #define DEBUGFS_ADD(name) \ debugfs_create_file(#name, 0400, \ sta->debugfs.dir, sta, &sta_ ##name## _ops); @@ -207,6 +235,7 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta) DEBUGFS_ADD(last_signal); DEBUGFS_ADD(last_noise); DEBUGFS_ADD(wep_weak_iv_count); + DEBUGFS_ADD(ht_capa); } void ieee80211_sta_debugfs_remove(struct sta_info *sta) |