Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 734 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/wcn36xx/txrx.c b/drivers/net/wireless/ath/wcn36xx/txrx.c
new file mode 100644
index 000000000..0802ed728
--- /dev/null
+++ b/drivers/net/wireless/ath/wcn36xx/txrx.c
@@ -0,0 +1,734 @@
+/*
+ * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/random.h>
+#include "txrx.h"
+
+static inline int get_rssi0(struct wcn36xx_rx_bd *bd)
+{
+	return 100 - ((bd->phy_stat0 >> 24) & 0xff);
+}
+
+static inline int get_snr(struct wcn36xx_rx_bd *bd)
+{
+	return ((bd->phy_stat1 >> 24) & 0xff);
+}
+
+struct wcn36xx_rate {
+	u16 bitrate;
+	u16 mcs_or_legacy_index;
+	enum mac80211_rx_encoding encoding;
+	enum mac80211_rx_encoding_flags encoding_flags;
+	enum rate_info_bw bw;
+};
+
+/* Buffer descriptor rx_ch field is limited to 5-bit (4+1), a mapping is used
+ * for 11A Channels.
+ */
+static const u8 ab_rx_ch_map[] = { 36, 40, 44, 48, 52, 56, 60, 64, 100, 104,
+				   108, 112, 116, 120, 124, 128, 132, 136, 140,
+				   149, 153, 157, 161, 165, 144 };
+
+static const struct wcn36xx_rate wcn36xx_rate_table[] = {
+	/* 11b rates */
+	{  10, 0, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{  20, 1, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{  55, 2, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{ 110, 3, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+
+	/* 11b SP (short preamble) */
+	{  10, 0, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
+	{  20, 1, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
+	{  55, 2, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
+	{ 110, 3, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 },
+
+	/* 11ag */
+	{  60, 4, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{  90, 5, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{ 120, 6, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{ 180, 7, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{ 240, 8, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{ 360, 9, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{ 480, 10, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+	{ 540, 11, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 },
+
+	/* 11n */
+	{  65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{ 130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{ 195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{ 260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{ 390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{ 520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{ 585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{ 650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+
+	/* 11n SGI */
+	{  72, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{ 144, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{ 217, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{ 289, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{ 434, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{ 578, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{ 650, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{ 722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+
+	/* 11n GF (greenfield) */
+	{  65, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
+	{ 130, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
+	{ 195, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
+	{ 260, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
+	{ 390, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
+	{ 520, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
+	{ 585, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
+	{ 650, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 },
+
+	/* 11n CB (channel bonding) */
+	{ 135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+
+	/* 11n CB + SGI */
+	{ 150, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 300, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 450, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 600, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 900, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11n GF + CB */
+	{ 135, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
+	{ 270, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
+	{ 405, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
+	{ 540, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
+	{ 810, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
+	{ 1080, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
+	{ 1215, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
+	{ 1350, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 },
+
+	/* 11ac reserved indices */
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 20 MHz 800ns GI MCS 0-8 */
+	{   65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{  130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{  195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{  260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{  390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{  520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{  585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{  650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+	{  780, 8, RX_ENC_HT, 0, RATE_INFO_BW_20 },
+
+	/* 11ac reserved indices */
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 20 MHz 400ns SGI MCS 6-8 */
+	{  655, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{  722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+	{  866, 8, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 },
+
+	/* 11ac reserved indices */
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 40 MHz 800ns GI MCS 0-9 */
+	{  135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{  270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{  405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{  540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{  810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1620, 8, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+	{ 1800, 9, RX_ENC_HT, 0, RATE_INFO_BW_40 },
+
+	/* 11ac reserved indices */
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 40 MHz 400ns SGI MCS 5-7 */
+	{ 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac reserved index */
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 40 MHz 400ns SGI MCS 5-7 */
+	{ 1800, 8, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 2000, 9, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac reserved index */
+	{ 1350, 6, RX_ENC_HT,  RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 80 MHz 800ns GI MCS 0-7 */
+	{  292, 0, RX_ENC_HT, 0, RATE_INFO_BW_80},
+	{  585, 1, RX_ENC_HT, 0, RATE_INFO_BW_80},
+	{  877, 2, RX_ENC_HT, 0, RATE_INFO_BW_80},
+	{ 1170, 3, RX_ENC_HT, 0, RATE_INFO_BW_80},
+	{ 1755, 4, RX_ENC_HT, 0, RATE_INFO_BW_80},
+	{ 2340, 5, RX_ENC_HT, 0, RATE_INFO_BW_80},
+	{ 2632, 6, RX_ENC_HT, 0, RATE_INFO_BW_80},
+	{ 2925, 7, RX_ENC_HT, 0, RATE_INFO_BW_80},
+
+	/* 11 ac reserved index */
+	{ 1350, 6, RX_ENC_HT,  RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 80 MHz 800 ns GI MCS 8-9 */
+	{ 3510, 8, RX_ENC_HT, 0, RATE_INFO_BW_80},
+	{ 3900, 9, RX_ENC_HT, 0, RATE_INFO_BW_80},
+
+	/* 11 ac reserved indices */
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+	{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 80 MHz 400 ns SGI MCS 6-7 */
+	{ 2925, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 },
+	{ 3250, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 },
+
+	/* 11ac reserved index */
+	{ 1350, 6, RX_ENC_HT,  RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 },
+
+	/* 11ac 80 MHz 400ns SGI MCS 8-9 */
+	{ 3900, 8, RX_ENC_VHT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 },
+	{ 4333, 9, RX_ENC_VHT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 },
+};
+
+static struct sk_buff *wcn36xx_unchain_msdu(struct sk_buff_head *amsdu)
+{
+	struct sk_buff *skb, *first;
+	int total_len = 0;
+	int space;
+
+	first = __skb_dequeue(amsdu);
+
+	skb_queue_walk(amsdu, skb)
+		total_len += skb->len;
+
+	space = total_len - skb_tailroom(first);
+	if (space > 0 && pskb_expand_head(first, 0, space, GFP_ATOMIC) < 0) {
+		__skb_queue_head(amsdu, first);
+		return NULL;
+	}
+
+	/* Walk list again, copying contents into msdu_head */
+	while ((skb = __skb_dequeue(amsdu))) {
+		skb_copy_from_linear_data(skb, skb_put(first, skb->len),
+					  skb->len);
+		dev_kfree_skb_irq(skb);
+	}
+
+	return first;
+}
+
+static void __skb_queue_purge_irq(struct sk_buff_head *list)
+{
+	struct sk_buff *skb;
+
+	while ((skb = __skb_dequeue(list)) != NULL)
+		dev_kfree_skb_irq(skb);
+}
+
+static void wcn36xx_update_survey(struct wcn36xx *wcn, int rssi, int snr,
+				  int band, int freq)
+{
+	static struct ieee80211_channel *channel;
+	struct ieee80211_supported_band *sband;
+	int idx;
+	int i;
+	u8 snr_sample = snr & 0xff;
+
+	idx = 0;
+	if (band == NL80211_BAND_5GHZ)
+		idx = wcn->hw->wiphy->bands[NL80211_BAND_2GHZ]->n_channels;
+
+	sband = wcn->hw->wiphy->bands[band];
+	channel = sband->channels;
+
+	for (i = 0; i < sband->n_channels; i++, channel++) {
+		if (channel->center_freq == freq) {
+			idx += i;
+			break;
+		}
+	}
+
+	spin_lock(&wcn->survey_lock);
+	wcn->chan_survey[idx].rssi = rssi;
+	wcn->chan_survey[idx].snr = snr;
+	spin_unlock(&wcn->survey_lock);
+
+	add_device_randomness(&snr_sample, sizeof(snr_sample));
+}
+
+int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
+{
+	struct ieee80211_rx_status status;
+	const struct wcn36xx_rate *rate;
+	struct ieee80211_hdr *hdr;
+	struct wcn36xx_rx_bd *bd;
+	u16 fc, sn;
+
+	/*
+	 * All fields must be 0, otherwise it can lead to
+	 * unexpected consequences.
+	 */
+	memset(&status, 0, sizeof(status));
+
+	bd = (struct wcn36xx_rx_bd *)skb->data;
+	buff_to_be((u32 *)bd, sizeof(*bd)/sizeof(u32));
+	wcn36xx_dbg_dump(WCN36XX_DBG_RX_DUMP,
+			 "BD   <<< ", (char *)bd,
+			 sizeof(struct wcn36xx_rx_bd));
+
+	if (bd->pdu.mpdu_data_off <= bd->pdu.mpdu_header_off ||
+	    bd->pdu.mpdu_len < bd->pdu.mpdu_header_len)
+		goto drop;
+
+	if (bd->asf && !bd->esf) { /* chained A-MSDU chunks */
+		/* Sanity check */
+		if (bd->pdu.mpdu_data_off + bd->pdu.mpdu_len > WCN36XX_PKT_SIZE)
+			goto drop;
+
+		skb_put(skb, bd->pdu.mpdu_data_off + bd->pdu.mpdu_len);
+		skb_pull(skb, bd->pdu.mpdu_data_off);
+
+		/* Only set status for first chained BD (with mac header) */
+		goto done;
+	}
+
+	if (bd->pdu.mpdu_header_off < sizeof(*bd) ||
+	    bd->pdu.mpdu_header_off + bd->pdu.mpdu_len > WCN36XX_PKT_SIZE)
+		goto drop;
+
+	skb_put(skb, bd->pdu.mpdu_header_off + bd->pdu.mpdu_len);
+	skb_pull(skb, bd->pdu.mpdu_header_off);
+
+	hdr = (struct ieee80211_hdr *) skb->data;
+	fc = __le16_to_cpu(hdr->frame_control);
+	sn = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl));
+
+	status.mactime = 10;
+	status.signal = -get_rssi0(bd);
+	status.antenna = 1;
+	status.flag = 0;
+	status.rx_flags = 0;
+	status.flag |= RX_FLAG_IV_STRIPPED |
+		       RX_FLAG_MMIC_STRIPPED |
+		       RX_FLAG_DECRYPTED;
+
+	wcn36xx_dbg(WCN36XX_DBG_RX, "status.flags=%x\n", status.flag);
+
+	if (bd->scan_learn) {
+		/* If packet originate from hardware scanning, extract the
+		 * band/channel from bd descriptor.
+		 */
+		u8 hwch = (bd->reserved0 << 4) + bd->rx_ch;
+
+		if (bd->rf_band != 1 && hwch <= sizeof(ab_rx_ch_map) && hwch >= 1) {
+			status.band = NL80211_BAND_5GHZ;
+			status.freq = ieee80211_channel_to_frequency(ab_rx_ch_map[hwch - 1],
+								     status.band);
+		} else {
+			status.band = NL80211_BAND_2GHZ;
+			status.freq = ieee80211_channel_to_frequency(hwch, status.band);
+		}
+	} else {
+		status.band = WCN36XX_BAND(wcn);
+		status.freq = WCN36XX_CENTER_FREQ(wcn);
+	}
+
+	wcn36xx_update_survey(wcn, status.signal, get_snr(bd),
+			      status.band, status.freq);
+
+	if (bd->rate_id < ARRAY_SIZE(wcn36xx_rate_table)) {
+		rate = &wcn36xx_rate_table[bd->rate_id];
+		status.encoding = rate->encoding;
+		status.enc_flags = rate->encoding_flags;
+		status.bw = rate->bw;
+		status.rate_idx = rate->mcs_or_legacy_index;
+		status.nss = 1;
+
+		if (status.band == NL80211_BAND_5GHZ &&
+		    status.encoding == RX_ENC_LEGACY &&
+		    status.rate_idx >= 4) {
+			/* no dsss rates in 5Ghz rates table */
+			status.rate_idx -= 4;
+		}
+	} else {
+		status.encoding = 0;
+		status.bw = 0;
+		status.enc_flags = 0;
+		status.rate_idx = 0;
+	}
+
+	if (ieee80211_is_beacon(hdr->frame_control) ||
+	    ieee80211_is_probe_resp(hdr->frame_control))
+		status.boottime_ns = ktime_get_boottime_ns();
+
+	memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
+
+	if (ieee80211_is_beacon(hdr->frame_control)) {
+		wcn36xx_dbg(WCN36XX_DBG_BEACON, "beacon skb %p len %d fc %04x sn %d\n",
+			    skb, skb->len, fc, sn);
+		wcn36xx_dbg_dump(WCN36XX_DBG_BEACON_DUMP, "SKB <<< ",
+				 (char *)skb->data, skb->len);
+	} else {
+		wcn36xx_dbg(WCN36XX_DBG_RX, "rx skb %p len %d fc %04x sn %d\n",
+			    skb, skb->len, fc, sn);
+		wcn36xx_dbg_dump(WCN36XX_DBG_RX_DUMP, "SKB <<< ",
+				 (char *)skb->data, skb->len);
+	}
+
+done:
+	/*  Chained AMSDU ? slow path */
+	if (unlikely(bd->asf && !(bd->lsf && bd->esf))) {
+		if (bd->esf && !skb_queue_empty(&wcn->amsdu)) {
+			wcn36xx_err("Discarding non complete chain");
+			__skb_queue_purge_irq(&wcn->amsdu);
+		}
+
+		__skb_queue_tail(&wcn->amsdu, skb);
+
+		if (!bd->lsf)
+			return 0; /* Not the last AMSDU, wait for more */
+
+		skb = wcn36xx_unchain_msdu(&wcn->amsdu);
+		if (!skb)
+			goto drop;
+	}
+
+	ieee80211_rx_irqsafe(wcn->hw, skb);
+
+	return 0;
+
+drop: /* drop everything */
+	wcn36xx_err("Drop frame! skb:%p len:%u hoff:%u doff:%u asf=%u esf=%u lsf=%u\n",
+		    skb, bd->pdu.mpdu_len, bd->pdu.mpdu_header_off,
+		    bd->pdu.mpdu_data_off, bd->asf, bd->esf, bd->lsf);
+
+	dev_kfree_skb_irq(skb);
+	__skb_queue_purge_irq(&wcn->amsdu);
+
+	return -EINVAL;
+}
+
+static void wcn36xx_set_tx_pdu(struct wcn36xx_tx_bd *bd,
+			       u32 mpdu_header_len,
+			       u32 len,
+			       u16 tid)
+{
+	bd->pdu.mpdu_header_len = mpdu_header_len;
+	bd->pdu.mpdu_header_off = sizeof(*bd);
+	bd->pdu.mpdu_data_off = bd->pdu.mpdu_header_len +
+		bd->pdu.mpdu_header_off;
+	bd->pdu.mpdu_len = len;
+	bd->pdu.tid = tid;
+}
+
+static inline struct wcn36xx_vif *get_vif_by_addr(struct wcn36xx *wcn,
+						  u8 *addr)
+{
+	struct wcn36xx_vif *vif_priv = NULL;
+	struct ieee80211_vif *vif = NULL;
+	list_for_each_entry(vif_priv, &wcn->vif_list, list) {
+			vif = wcn36xx_priv_to_vif(vif_priv);
+			if (memcmp(vif->addr, addr, ETH_ALEN) == 0)
+				return vif_priv;
+	}
+	wcn36xx_warn("vif %pM not found\n", addr);
+	return NULL;
+}
+
+static void wcn36xx_tx_start_ampdu(struct wcn36xx *wcn,
+				   struct wcn36xx_sta *sta_priv,
+				   struct sk_buff *skb)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+	struct ieee80211_sta *sta;
+	u8 *qc, tid;
+
+	if (!conf_is_ht(&wcn->hw->conf))
+		return;
+
+	sta = wcn36xx_priv_to_sta(sta_priv);
+
+	if (WARN_ON(!ieee80211_is_data_qos(hdr->frame_control)))
+		return;
+
+	if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
+		return;
+
+	qc = ieee80211_get_qos_ctl(hdr);
+	tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
+
+	spin_lock(&sta_priv->ampdu_lock);
+	if (sta_priv->ampdu_state[tid] != WCN36XX_AMPDU_NONE)
+		goto out_unlock;
+
+	if (sta_priv->non_agg_frame_ct++ >= WCN36XX_AMPDU_START_THRESH) {
+		sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START;
+		sta_priv->non_agg_frame_ct = 0;
+		ieee80211_start_tx_ba_session(sta, tid, 0);
+	}
+out_unlock:
+	spin_unlock(&sta_priv->ampdu_lock);
+}
+
+static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd,
+				struct wcn36xx *wcn,
+				struct wcn36xx_vif **vif_priv,
+				struct wcn36xx_sta *sta_priv,
+				struct sk_buff *skb,
+				bool bcast)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct ieee80211_vif *vif = NULL;
+	struct wcn36xx_vif *__vif_priv = NULL;
+	bool is_data_qos = ieee80211_is_data_qos(hdr->frame_control);
+	u16 tid = 0;
+
+	bd->bd_rate = WCN36XX_BD_RATE_DATA;
+
+	/*
+	 * For not unicast frames mac80211 will not set sta pointer so use
+	 * self_sta_index instead.
+	 */
+	if (sta_priv) {
+		__vif_priv = sta_priv->vif;
+		vif = wcn36xx_priv_to_vif(__vif_priv);
+
+		bd->dpu_sign = sta_priv->ucast_dpu_sign;
+		if (vif->type == NL80211_IFTYPE_STATION) {
+			bd->sta_index = sta_priv->bss_sta_index;
+			bd->dpu_desc_idx = sta_priv->bss_dpu_desc_index;
+		} else if (vif->type == NL80211_IFTYPE_AP ||
+			   vif->type == NL80211_IFTYPE_ADHOC ||
+			   vif->type == NL80211_IFTYPE_MESH_POINT) {
+			bd->sta_index = sta_priv->sta_index;
+			bd->dpu_desc_idx = sta_priv->dpu_desc_index;
+		}
+	} else {
+		__vif_priv = get_vif_by_addr(wcn, hdr->addr2);
+		bd->sta_index = __vif_priv->self_sta_index;
+		bd->dpu_desc_idx = __vif_priv->self_dpu_desc_index;
+		bd->dpu_sign = __vif_priv->self_ucast_dpu_sign;
+	}
+
+	if (is_data_qos) {
+		tid = ieee80211_get_tid(hdr);
+		/* TID->QID is one-to-one mapping */
+		bd->queue_id = tid;
+		bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_QOS;
+	} else {
+		bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_NON_QOS;
+	}
+
+	if (info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT ||
+	    (sta_priv && !sta_priv->is_data_encrypted)) {
+		bd->dpu_ne = 1;
+	}
+
+	if (ieee80211_is_any_nullfunc(hdr->frame_control)) {
+		/* Don't use a regular queue for null packet (no ampdu) */
+		bd->queue_id = WCN36XX_TX_U_WQ_ID;
+		bd->bd_rate = WCN36XX_BD_RATE_CTRL;
+		if (ieee80211_is_qos_nullfunc(hdr->frame_control))
+			bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_HOST;
+	}
+
+	if (bcast) {
+		bd->ub = 1;
+		bd->ack_policy = 1;
+	}
+	*vif_priv = __vif_priv;
+
+	wcn36xx_set_tx_pdu(bd,
+			   is_data_qos ?
+			   sizeof(struct ieee80211_qos_hdr) :
+			   sizeof(struct ieee80211_hdr_3addr),
+			   skb->len, tid);
+
+	if (sta_priv && is_data_qos)
+		wcn36xx_tx_start_ampdu(wcn, sta_priv, skb);
+}
+
+static void wcn36xx_set_tx_mgmt(struct wcn36xx_tx_bd *bd,
+				struct wcn36xx *wcn,
+				struct wcn36xx_vif **vif_priv,
+				struct sk_buff *skb,
+				bool bcast)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+	struct wcn36xx_vif *__vif_priv =
+		get_vif_by_addr(wcn, hdr->addr2);
+	bd->sta_index = __vif_priv->self_sta_index;
+	bd->dpu_desc_idx = __vif_priv->self_dpu_desc_index;
+	bd->dpu_ne = 1;
+
+	/* default rate for unicast */
+	if (ieee80211_is_mgmt(hdr->frame_control))
+		bd->bd_rate = (WCN36XX_BAND(wcn) == NL80211_BAND_5GHZ) ?
+			WCN36XX_BD_RATE_CTRL :
+			WCN36XX_BD_RATE_MGMT;
+	else if (ieee80211_is_ctl(hdr->frame_control))
+		bd->bd_rate = WCN36XX_BD_RATE_CTRL;
+	else
+		wcn36xx_warn("frame control type unknown\n");
+
+	/*
+	 * In joining state trick hardware that probe is sent as
+	 * unicast even if address is broadcast.
+	 */
+	if (__vif_priv->is_joining &&
+	    ieee80211_is_probe_req(hdr->frame_control))
+		bcast = false;
+
+	if (bcast) {
+		/* broadcast */
+		bd->ub = 1;
+		/* No ack needed not unicast */
+		bd->ack_policy = 1;
+		bd->queue_id = WCN36XX_TX_B_WQ_ID;
+	} else
+		bd->queue_id = WCN36XX_TX_U_WQ_ID;
+	*vif_priv = __vif_priv;
+
+	bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_NON_QOS;
+
+	wcn36xx_set_tx_pdu(bd,
+			   ieee80211_is_data_qos(hdr->frame_control) ?
+			   sizeof(struct ieee80211_qos_hdr) :
+			   sizeof(struct ieee80211_hdr_3addr),
+			   skb->len, WCN36XX_TID);
+}
+
+int wcn36xx_start_tx(struct wcn36xx *wcn,
+		     struct wcn36xx_sta *sta_priv,
+		     struct sk_buff *skb)
+{
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+	struct wcn36xx_vif *vif_priv = NULL;
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	bool is_low = ieee80211_is_data(hdr->frame_control);
+	bool bcast = is_broadcast_ether_addr(hdr->addr1) ||
+		is_multicast_ether_addr(hdr->addr1);
+	bool ack_ind = (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) &&
+					!(info->flags & IEEE80211_TX_CTL_NO_ACK);
+	struct wcn36xx_tx_bd bd;
+	int ret;
+
+	memset(&bd, 0, sizeof(bd));
+
+	wcn36xx_dbg(WCN36XX_DBG_TX,
+		    "tx skb %p len %d fc %04x sn %d %s %s\n",
+		    skb, skb->len, __le16_to_cpu(hdr->frame_control),
+		    IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)),
+		    is_low ? "low" : "high", bcast ? "bcast" : "ucast");
+
+	wcn36xx_dbg_dump(WCN36XX_DBG_TX_DUMP, "", skb->data, skb->len);
+
+	bd.dpu_rf = WCN36XX_BMU_WQ_TX;
+
+	if (unlikely(ack_ind)) {
+		wcn36xx_dbg(WCN36XX_DBG_DXE, "TX_ACK status requested\n");
+
+		/* Only one at a time is supported by fw. Stop the TX queues
+		 * until the ack status gets back.
+		 */
+		ieee80211_stop_queues(wcn->hw);
+
+		/* Request ack indication from the firmware */
+		bd.tx_comp = 1;
+	}
+
+	/* Data frames served first*/
+	if (is_low)
+		wcn36xx_set_tx_data(&bd, wcn, &vif_priv, sta_priv, skb, bcast);
+	else
+		/* MGMT and CTRL frames are handeld here*/
+		wcn36xx_set_tx_mgmt(&bd, wcn, &vif_priv, skb, bcast);
+
+	buff_to_be((u32 *)&bd, sizeof(bd)/sizeof(u32));
+	bd.tx_bd_sign = 0xbdbdbdbd;
+
+	ret = wcn36xx_dxe_tx_frame(wcn, vif_priv, &bd, skb, is_low);
+	if (unlikely(ret && ack_ind)) {
+		/* If the skb has not been transmitted, resume TX queue */
+		ieee80211_wake_queues(wcn->hw);
+	}
+
+	return ret;
+}
+
+void wcn36xx_process_tx_rate(struct ani_global_class_a_stats_info *stats, struct rate_info *info)
+{
+	/* tx_rate is in units of 500kbps; mac80211 wants them in 100kbps */
+	if (stats->tx_rate_flags & HAL_TX_RATE_LEGACY)
+		info->legacy = stats->tx_rate * 5;
+
+	info->flags = 0;
+	info->mcs = stats->mcs_index;
+	info->nss = 1;
+
+	if (stats->tx_rate_flags & (HAL_TX_RATE_HT20 | HAL_TX_RATE_HT40))
+		info->flags |= RATE_INFO_FLAGS_MCS;
+
+	if (stats->tx_rate_flags & (HAL_TX_RATE_VHT20 | HAL_TX_RATE_VHT40 | HAL_TX_RATE_VHT80))
+		info->flags |= RATE_INFO_FLAGS_VHT_MCS;
+
+	if (stats->tx_rate_flags & HAL_TX_RATE_SGI)
+		info->flags |= RATE_INFO_FLAGS_SHORT_GI;
+
+	if (stats->tx_rate_flags & (HAL_TX_RATE_HT20 | HAL_TX_RATE_VHT20))
+		info->bw = RATE_INFO_BW_20;
+
+	if (stats->tx_rate_flags & (HAL_TX_RATE_HT40 | HAL_TX_RATE_VHT40))
+		info->bw = RATE_INFO_BW_40;
+
+	if (stats->tx_rate_flags & HAL_TX_RATE_VHT80)
+		info->bw = RATE_INFO_BW_80;
+}