Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/kernel/net/mac80211/rc80211_minstrel_ht.h b/kernel/net/mac80211/rc80211_minstrel_ht.h
new file mode 100644
index 000000000..e8b52a94d
--- /dev/null
+++ b/kernel/net/mac80211/rc80211_minstrel_ht.h
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __RC_MINSTREL_HT_H
+#define __RC_MINSTREL_HT_H
+
+/*
+ * The number of streams can be changed to 2 to reduce code
+ * size and memory footprint.
+ */
+#define MINSTREL_MAX_STREAMS		3
+#define MINSTREL_HT_STREAM_GROUPS	4 /* BW(=2) * SGI(=2) */
+#ifdef CONFIG_MAC80211_RC_MINSTREL_VHT
+#define MINSTREL_VHT_STREAM_GROUPS	6 /* BW(=3) * SGI(=2) */
+#else
+#define MINSTREL_VHT_STREAM_GROUPS	0
+#endif
+
+#define MINSTREL_HT_GROUPS_NB	(MINSTREL_MAX_STREAMS *		\
+				 MINSTREL_HT_STREAM_GROUPS)
+#define MINSTREL_VHT_GROUPS_NB	(MINSTREL_MAX_STREAMS *		\
+				 MINSTREL_VHT_STREAM_GROUPS)
+#define MINSTREL_CCK_GROUPS_NB	1
+#define MINSTREL_GROUPS_NB	(MINSTREL_HT_GROUPS_NB +	\
+				 MINSTREL_VHT_GROUPS_NB +	\
+				 MINSTREL_CCK_GROUPS_NB)
+
+#define MINSTREL_HT_GROUP_0	0
+#define MINSTREL_CCK_GROUP	(MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB)
+#define MINSTREL_VHT_GROUP_0	(MINSTREL_CCK_GROUP + 1)
+
+#ifdef CONFIG_MAC80211_RC_MINSTREL_VHT
+#define MCS_GROUP_RATES		10
+#else
+#define MCS_GROUP_RATES		8
+#endif
+
+struct mcs_group {
+	u32 flags;
+	unsigned int streams;
+	unsigned int duration[MCS_GROUP_RATES];
+};
+
+extern const struct mcs_group minstrel_mcs_groups[];
+
+struct minstrel_mcs_group_data {
+	u8 index;
+	u8 column;
+
+	/* bitfield of supported MCS rates of this group */
+	u16 supported;
+
+	/* sorted rate set within a MCS group*/
+	u16 max_group_tp_rate[MAX_THR_RATES];
+	u16 max_group_prob_rate;
+
+	/* MCS rate statistics */
+	struct minstrel_rate_stats rates[MCS_GROUP_RATES];
+};
+
+struct minstrel_ht_sta {
+	struct ieee80211_sta *sta;
+
+	/* ampdu length (average, per sampling interval) */
+	unsigned int ampdu_len;
+	unsigned int ampdu_packets;
+
+	/* ampdu length (EWMA) */
+	unsigned int avg_ampdu_len;
+
+	/* overall sorted rate set */
+	u16 max_tp_rate[MAX_THR_RATES];
+	u16 max_prob_rate;
+
+	/* time of last status update */
+	unsigned long last_stats_update;
+
+	/* overhead time in usec for each frame */
+	unsigned int overhead;
+	unsigned int overhead_rtscts;
+
+	unsigned int total_packets;
+	unsigned int sample_packets;
+
+	/* tx flags to add for frames for this sta */
+	u32 tx_flags;
+
+	u8 sample_wait;
+	u8 sample_tries;
+	u8 sample_count;
+	u8 sample_slow;
+
+	/* current MCS group to be sampled */
+	u8 sample_group;
+
+	u8 cck_supported;
+	u8 cck_supported_short;
+
+	/* MCS rate group info and statistics */
+	struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB];
+};
+
+struct minstrel_ht_sta_priv {
+	union {
+		struct minstrel_ht_sta ht;
+		struct minstrel_sta_info legacy;
+	};
+#ifdef CONFIG_MAC80211_DEBUGFS
+	struct dentry *dbg_stats;
+	struct dentry *dbg_stats_csv;
+#endif
+	void *ratelist;
+	void *sample_table;
+	bool is_ht;
+};
+
+void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
+void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta);
+int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
+			   int prob_ewma);
+
+#endif