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wcn36xx: Add ieee80211 rx status rate information

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Packet encoding, bandwidth and bitrate can be derived from the
wcn36xx rate_idx, part of the buffer descriptor.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1591961254-10243-1-git-send-email-loic.poulain@linaro.org
This commit is contained in:
Loic Poulain
2020-06-15 20:29:06 +03:00
committed by Kalle Valo
parent 720e5c03e5
commit 0aa90483f2
1 changed files with 108 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

109
drivers/net/wireless/ath/wcn36xx/txrx.c
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@@ -23,9 +23,104 @@ static inline int get_rssi0(struct wcn36xx_rx_bd *bd)
return 100 - ((bd->phy_stat0 >> 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;
};
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 },
/* TODO: AC rates */
};
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;
@@ -61,7 +156,6 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
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 +164,19 @@ int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb)
wcn36xx_dbg(WCN36XX_DBG_RX, "status.flags=%x\n", status.flag);
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;
} else {
status.encoding = 0;
status.bw = 0;
status.enc_flags = 0;
status.rate_idx = 0;
}
memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
if (ieee80211_is_beacon(hdr->frame_control)) {