From 24f7580e852b5472b51eea322bb78454df0054b8 Mon Sep 17 00:00:00 2001 From: Zefir Kurtisi Date: Fri, 20 May 2011 20:29:17 +0200 Subject: [PATCH] minstrel_ht: fixed rate mode through debugfs Found several threads about fixed rate mode in minstrel_ht for test environments, but no patches for it. This patch provides such a mode through debugfs. Signed-off-by: John W. Linville --- net/mac80211/rc80211_minstrel.c | 9 +++++++++ net/mac80211/rc80211_minstrel.h | 12 ++++++++++++ net/mac80211/rc80211_minstrel_ht.c | 7 +++++++ 3 files changed, 28 insertions(+) diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c index 8adac67395f7..58a89554b788 100644 --- a/net/mac80211/rc80211_minstrel.c +++ b/net/mac80211/rc80211_minstrel.c @@ -532,12 +532,21 @@ minstrel_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) mp->hw = hw; mp->update_interval = 100; +#ifdef CONFIG_MAC80211_DEBUGFS + mp->fixed_rate_idx = (u32) -1; + mp->dbg_fixed_rate = debugfs_create_u32("fixed_rate_idx", + S_IRUGO | S_IWUGO, debugfsdir, &mp->fixed_rate_idx); +#endif + return mp; } static void minstrel_free(void *priv) { +#ifdef CONFIG_MAC80211_DEBUGFS + debugfs_remove(((struct minstrel_priv *)priv)->dbg_fixed_rate); +#endif kfree(priv); } diff --git a/net/mac80211/rc80211_minstrel.h b/net/mac80211/rc80211_minstrel.h index 0f5a83370aa6..5d278eccaef0 100644 --- a/net/mac80211/rc80211_minstrel.h +++ b/net/mac80211/rc80211_minstrel.h @@ -78,6 +78,18 @@ struct minstrel_priv { unsigned int update_interval; unsigned int lookaround_rate; unsigned int lookaround_rate_mrr; + +#ifdef CONFIG_MAC80211_DEBUGFS + /* + * enable fixed rate processing per RC + * - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx + * - write -1 to enable RC processing again + * - setting will be applied on next update + */ + u32 fixed_rate_idx; + struct dentry *dbg_fixed_rate; +#endif + }; struct minstrel_debugfs_info { diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index 333b5118be6d..66a1eeb279c6 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -609,6 +609,13 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta, info->flags |= mi->tx_flags; sample_idx = minstrel_get_sample_rate(mp, mi); + +#ifdef CONFIG_MAC80211_DEBUGFS + /* use fixed index if set */ + if (mp->fixed_rate_idx != -1) + sample_idx = mp->fixed_rate_idx; +#endif + if (sample_idx >= 0) { sample = true; minstrel_ht_set_rate(mp, mi, &ar[0], sample_idx, -- 2.30.2