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path: root/drivers/net/wireless/ath/wcn36xx/txrx.c
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Diffstat (limited to 'drivers/net/wireless/ath/wcn36xx/txrx.c')
-rw-r--r--drivers/net/wireless/ath/wcn36xx/txrx.c482
1 files changed, 441 insertions, 41 deletions
diff --git a/drivers/net/wireless/ath/wcn36xx/txrx.c b/drivers/net/wireless/ath/wcn36xx/txrx.c
index a6902371e89c..8826998797d6 100644
--- a/drivers/net/wireless/ath/wcn36xx/txrx.c
+++ b/drivers/net/wireless/ath/wcn36xx/txrx.c
@@ -16,6 +16,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/random.h>
#include "txrx.h"
static inline int get_rssi0(struct wcn36xx_rx_bd *bd)
@@ -23,9 +24,289 @@ 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;
@@ -37,11 +318,31 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
memset(&status, 0, sizeof(status));
bd = (struct wcn36xx_rx_bd *)skb->data;
- buff_to_be((u32 *)bd, sizeof(*bd)/sizeof(u32));
+ buff_to_be(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);
@@ -49,19 +350,9 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
fc = __le16_to_cpu(hdr->frame_control);
sn = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl));
- /* When scanning associate beacons to this */
- if (ieee80211_is_beacon(hdr->frame_control) && wcn->scan_freq) {
- status.freq = wcn->scan_freq;
- status.band = wcn->scan_band;
- } else {
- status.freq = WCN36XX_CENTER_FREQ(wcn);
- status.band = WCN36XX_BAND(wcn);
- }
-
status.mactime = 10;
status.signal = -get_rssi0(bd);
status.antenna = 1;
- status.rate_idx = 1;
status.flag = 0;
status.rx_flags = 0;
status.flag |= RX_FLAG_IV_STRIPPED |
@@ -70,6 +361,53 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
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)) {
@@ -84,9 +422,37 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *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,
@@ -100,7 +466,6 @@ static void wcn36xx_set_tx_pdu(struct wcn36xx_tx_bd *bd,
bd->pdu.mpdu_header_off;
bd->pdu.mpdu_len = len;
bd->pdu.tid = tid;
- bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_DPU_QOS;
}
static inline struct wcn36xx_vif *get_vif_by_addr(struct wcn36xx *wcn,
@@ -160,9 +525,11 @@ static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd,
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;
+ bool is_data_qos = ieee80211_is_data_qos(hdr->frame_control);
+ u16 tid = 0;
bd->bd_rate = WCN36XX_BD_RATE_DATA;
@@ -191,9 +558,27 @@ static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd,
bd->dpu_sign = __vif_priv->self_ucast_dpu_sign;
}
- if (ieee80211_is_nullfunc(hdr->frame_control) ||
- (sta_priv && !sta_priv->is_data_encrypted))
+ 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;
@@ -201,13 +586,11 @@ static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd,
}
*vif_priv = __vif_priv;
- is_data_qos = ieee80211_is_data_qos(hdr->frame_control);
-
wcn36xx_set_tx_pdu(bd,
is_data_qos ?
sizeof(struct ieee80211_qos_hdr) :
sizeof(struct ieee80211_hdr_3addr),
- skb->len, sta_priv ? sta_priv->tid : 0);
+ skb->len, tid);
if (sta_priv && is_data_qos)
wcn36xx_tx_start_ampdu(wcn, sta_priv, skb);
@@ -254,6 +637,8 @@ static void wcn36xx_set_tx_mgmt(struct wcn36xx_tx_bd *bd,
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) :
@@ -268,10 +653,11 @@ int wcn36xx_start_tx(struct wcn36xx *wcn,
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct wcn36xx_vif *vif_priv = NULL;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- unsigned long flags;
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;
@@ -287,25 +673,16 @@ int wcn36xx_start_tx(struct wcn36xx *wcn,
bd.dpu_rf = WCN36XX_BMU_WQ_TX;
- bd.tx_comp = !!(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS);
- if (bd.tx_comp) {
+ if (unlikely(ack_ind)) {
wcn36xx_dbg(WCN36XX_DBG_DXE, "TX_ACK status requested\n");
- spin_lock_irqsave(&wcn->dxe_lock, flags);
- if (wcn->tx_ack_skb) {
- spin_unlock_irqrestore(&wcn->dxe_lock, flags);
- wcn36xx_warn("tx_ack_skb already set\n");
- return -EINVAL;
- }
-
- wcn->tx_ack_skb = skb;
- spin_unlock_irqrestore(&wcn->dxe_lock, flags);
/* Only one at a time is supported by fw. Stop the TX queues
* until the ack status gets back.
- *
- * TODO: Add watchdog in case FW does not answer
*/
ieee80211_stop_queues(wcn->hw);
+
+ /* Request ack indication from the firmware */
+ bd.tx_comp = 1;
}
/* Data frames served first*/
@@ -315,20 +692,43 @@ int wcn36xx_start_tx(struct wcn36xx *wcn,
/* 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));
+ buff_to_be(&bd, sizeof(bd)/sizeof(u32));
bd.tx_bd_sign = 0xbdbdbdbd;
ret = wcn36xx_dxe_tx_frame(wcn, vif_priv, &bd, skb, is_low);
- if (ret && bd.tx_comp) {
- /* If the skb has not been transmitted,
- * don't keep a reference to it.
- */
- spin_lock_irqsave(&wcn->dxe_lock, flags);
- wcn->tx_ack_skb = NULL;
- spin_unlock_irqrestore(&wcn->dxe_lock, flags);
-
+ 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;
+}
generated by cgit (git 2.34.1) at 2025-12-28 08:07:29 +0000