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Commit 64491f0e authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
Browse files

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: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent a58ce43f

net/mac80211/debugfs_sta.c

+29 −0
Original line number Diff line number Diff line
@@ -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)