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Subject[RFC PATCH v2 1/2] mwifiex: refactor mwifiex_parse_htinfo() for reuse
Date
This function converts some firmware-specific parameters into cfg80211
'rate_info' structures. It currently assumes it's dealing only with TX
bitrate, but the RX bitrate looks to be the same, so refactor this
function to be reusable.

Signed-off-by: Brian Norris <briannorris@chromium.org>
---
v2:
* no change - just split unrelated (debugfs) patch to its own series
---
.../net/wireless/marvell/mwifiex/cfg80211.c | 36 ++++++++++---------
1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index adc88433faa8..02b80ea232a7 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -1275,27 +1275,27 @@ mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
}

static void
-mwifiex_parse_htinfo(struct mwifiex_private *priv, u8 tx_htinfo,
+mwifiex_parse_htinfo(struct mwifiex_private *priv, u8 rateinfo, u8 htinfo,
struct rate_info *rate)
{
struct mwifiex_adapter *adapter = priv->adapter;

if (adapter->is_hw_11ac_capable) {
/* bit[1-0]: 00=LG 01=HT 10=VHT */
- if (tx_htinfo & BIT(0)) {
+ if (htinfo & BIT(0)) {
/* HT */
- rate->mcs = priv->tx_rate;
+ rate->mcs = rateinfo;
rate->flags |= RATE_INFO_FLAGS_MCS;
}
- if (tx_htinfo & BIT(1)) {
+ if (htinfo & BIT(1)) {
/* VHT */
- rate->mcs = priv->tx_rate & 0x0F;
+ rate->mcs = rateinfo & 0x0F;
rate->flags |= RATE_INFO_FLAGS_VHT_MCS;
}

- if (tx_htinfo & (BIT(1) | BIT(0))) {
+ if (htinfo & (BIT(1) | BIT(0))) {
/* HT or VHT */
- switch (tx_htinfo & (BIT(3) | BIT(2))) {
+ switch (htinfo & (BIT(3) | BIT(2))) {
case 0:
rate->bw = RATE_INFO_BW_20;
break;
@@ -1310,26 +1310,26 @@ mwifiex_parse_htinfo(struct mwifiex_private *priv, u8 tx_htinfo,
break;
}

- if (tx_htinfo & BIT(4))
+ if (htinfo & BIT(4))
rate->flags |= RATE_INFO_FLAGS_SHORT_GI;

- if ((priv->tx_rate >> 4) == 1)
+ if ((rateinfo >> 4) == 1)
rate->nss = 2;
else
rate->nss = 1;
}
} else {
/*
- * Bit 0 in tx_htinfo indicates that current Tx rate
- * is 11n rate. Valid MCS index values for us are 0 to 15.
+ * Bit 0 in htinfo indicates that current rate is 11n. Valid
+ * MCS index values for us are 0 to 15.
*/
- if ((tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
- rate->mcs = priv->tx_rate;
+ if ((htinfo & BIT(0)) && (rateinfo < 16)) {
+ rate->mcs = rateinfo;
rate->flags |= RATE_INFO_FLAGS_MCS;
rate->bw = RATE_INFO_BW_20;
- if (tx_htinfo & BIT(1))
+ if (htinfo & BIT(1))
rate->bw = RATE_INFO_BW_40;
- if (tx_htinfo & BIT(2))
+ if (htinfo & BIT(2))
rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
}
}
@@ -1375,7 +1375,8 @@ mwifiex_dump_station_info(struct mwifiex_private *priv,
sinfo->tx_packets = node->stats.tx_packets;
sinfo->tx_failed = node->stats.tx_failed;

- mwifiex_parse_htinfo(priv, node->stats.last_tx_htinfo,
+ mwifiex_parse_htinfo(priv, priv->tx_rate,
+ node->stats.last_tx_htinfo,
&sinfo->txrate);
sinfo->txrate.legacy = node->stats.last_tx_rate * 5;

@@ -1401,7 +1402,8 @@ mwifiex_dump_station_info(struct mwifiex_private *priv,
HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
&priv->dtim_period, true);

- mwifiex_parse_htinfo(priv, priv->tx_htinfo, &sinfo->txrate);
+ mwifiex_parse_htinfo(priv, priv->tx_rate, priv->tx_htinfo,
+ &sinfo->txrate);

sinfo->signal_avg = priv->bcn_rssi_avg;
sinfo->rx_bytes = priv->stats.rx_bytes;
--
2.20.0.rc2.403.gdbc3b29805-goog
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