From df78a0c0b67de58934877aad61e0431a2bd0caf1 Mon Sep 17 00:00:00 2001
From: Thomas Pedersen <thomas@adapt-ip.com>
Date: Mon, 1 Jun 2020 23:22:47 -0700
Subject: [PATCH] nl80211: S1G band and channel definitions
Git-commit: df78a0c0b67de58934877aad61e0431a2bd0caf1
Patch-mainline: v5.9-rc1
References: jsc#SLE-13430
Gives drivers the definitions needed to advertise support
for S1G bands.
Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
Link: https://lore.kernel.org/r/20200602062247.23212-1-thomas@adapt-ip.com
Link: https://lore.kernel.org/r/20200731055636.795173-1-thomas@adapt-ip.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/ath/ath10k/mac.c | 9 ++-------
include/net/cfg80211.h | 17 +++++++++++++++++
include/uapi/linux/nl80211.h | 16 ++++++++++++++++
net/mac80211/chan.c | 7 ++++++-
net/mac80211/scan.c | 1 +
net/mac80211/tx.c | 1 +
net/mac80211/util.c | 5 +++++
net/wireless/chan.c | 35 +++++++++++++++++++++++++++++++++++
net/wireless/core.c | 5 +++--
net/wireless/util.c | 8 ++++++++
10 files changed, 94 insertions(+), 10 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 919d15584d4a..3c0c33a9f30c 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -568,11 +568,7 @@ chan_to_phymode(const struct cfg80211_chan_def *chandef)
case NL80211_CHAN_WIDTH_40:
phymode = MODE_11NG_HT40;
break;
- case NL80211_CHAN_WIDTH_5:
- case NL80211_CHAN_WIDTH_10:
- case NL80211_CHAN_WIDTH_80:
- case NL80211_CHAN_WIDTH_80P80:
- case NL80211_CHAN_WIDTH_160:
+ default:
phymode = MODE_UNKNOWN;
break;
}
@@ -597,8 +593,7 @@ chan_to_phymode(const struct cfg80211_chan_def *chandef)
case NL80211_CHAN_WIDTH_80P80:
phymode = MODE_11AC_VHT80_80;
break;
- case NL80211_CHAN_WIDTH_5:
- case NL80211_CHAN_WIDTH_10:
+ default:
phymode = MODE_UNKNOWN;
break;
}
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index fc7e8807838d..ac6e58193426 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -417,6 +417,22 @@ struct ieee80211_edmg {
enum ieee80211_edmg_bw_config bw_config;
};
+/**
+ * struct ieee80211_sta_s1g_cap - STA's S1G capabilities
+ *
+ * This structure describes most essential parameters needed
+ * to describe 802.11ah S1G capabilities for a STA.
+ *
+ * @s1g_supported: is STA an S1G STA
+ * @cap: S1G capabilities information
+ * @nss_mcs: Supported NSS MCS set
+ */
+struct ieee80211_sta_s1g_cap {
+ bool s1g;
+ u8 cap[10]; /* use S1G_CAPAB_ */
+ u8 nss_mcs[5];
+};
+
/**
* struct ieee80211_supported_band - frequency band definition
*
@@ -448,6 +464,7 @@ struct ieee80211_supported_band {
int n_bitrates;
struct ieee80211_sta_ht_cap ht_cap;
struct ieee80211_sta_vht_cap vht_cap;
+ struct ieee80211_sta_s1g_cap s1g_cap;
struct ieee80211_edmg edmg_cap;
u16 n_iftype_data;
const struct ieee80211_sband_iftype_data *iftype_data;
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 4e6339ab1fce..ad183469f9af 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -4437,6 +4437,11 @@ enum nl80211_key_mode {
* attribute must be provided as well
* @NL80211_CHAN_WIDTH_5: 5 MHz OFDM channel
* @NL80211_CHAN_WIDTH_10: 10 MHz OFDM channel
+ * @NL80211_CHAN_WIDTH_1: 1 MHz OFDM channel
+ * @NL80211_CHAN_WIDTH_2: 2 MHz OFDM channel
+ * @NL80211_CHAN_WIDTH_4: 4 MHz OFDM channel
+ * @NL80211_CHAN_WIDTH_8: 8 MHz OFDM channel
+ * @NL80211_CHAN_WIDTH_16: 16 MHz OFDM channel
*/
enum nl80211_chan_width {
NL80211_CHAN_WIDTH_20_NOHT,
@@ -4447,6 +4452,11 @@ enum nl80211_chan_width {
NL80211_CHAN_WIDTH_160,
NL80211_CHAN_WIDTH_5,
NL80211_CHAN_WIDTH_10,
+ NL80211_CHAN_WIDTH_1,
+ NL80211_CHAN_WIDTH_2,
+ NL80211_CHAN_WIDTH_4,
+ NL80211_CHAN_WIDTH_8,
+ NL80211_CHAN_WIDTH_16,
};
/**
@@ -4457,11 +4467,15 @@ enum nl80211_chan_width {
* @NL80211_BSS_CHAN_WIDTH_20: control channel is 20 MHz wide or compatible
* @NL80211_BSS_CHAN_WIDTH_10: control channel is 10 MHz wide
* @NL80211_BSS_CHAN_WIDTH_5: control channel is 5 MHz wide
+ * @NL80211_BSS_CHAN_WIDTH_1: control channel is 1 MHz wide
+ * @NL80211_BSS_CHAN_WIDTH_2: control channel is 2 MHz wide
*/
enum nl80211_bss_scan_width {
NL80211_BSS_CHAN_WIDTH_20,
NL80211_BSS_CHAN_WIDTH_10,
NL80211_BSS_CHAN_WIDTH_5,
+ NL80211_BSS_CHAN_WIDTH_1,
+ NL80211_BSS_CHAN_WIDTH_2,
};
/**
@@ -4740,6 +4754,7 @@ enum nl80211_txrate_gi {
* @NL80211_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz)
* @NL80211_BAND_60GHZ: around 60 GHz band (58.32 - 69.12 GHz)
* @NL80211_BAND_6GHZ: around 6 GHz band (5.9 - 7.2 GHz)
+ * @NL80211_BAND_S1GHZ: around 900MHz, supported by S1G PHYs
* @NUM_NL80211_BANDS: number of bands, avoid using this in userspace
* since newer kernel versions may support more bands
*/
@@ -4748,6 +4763,7 @@ enum nl80211_band {
NL80211_BAND_5GHZ,
NL80211_BAND_60GHZ,
NL80211_BAND_6GHZ,
+ NL80211_BAND_S1GHZ,
NUM_NL80211_BANDS,
};
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index e6e192f53e4e..08cf9da9c1e3 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -313,9 +313,14 @@ void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
lockdep_assert_held(&local->chanctx_mtx);
- /* don't optimize 5MHz, 10MHz, and radar_enabled confs */
+ /* don't optimize non-20MHz based and radar_enabled confs */
if (ctx->conf.def.width == NL80211_CHAN_WIDTH_5 ||
ctx->conf.def.width == NL80211_CHAN_WIDTH_10 ||
+ ctx->conf.def.width == NL80211_CHAN_WIDTH_1 ||
+ ctx->conf.def.width == NL80211_CHAN_WIDTH_2 ||
+ ctx->conf.def.width == NL80211_CHAN_WIDTH_4 ||
+ ctx->conf.def.width == NL80211_CHAN_WIDTH_8 ||
+ ctx->conf.def.width == NL80211_CHAN_WIDTH_16 ||
ctx->conf.radar_enabled) {
ctx->conf.min_def = ctx->conf.def;
return;
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index ad90bbe57457..8003be6dae8a 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -913,6 +913,7 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
case NL80211_BSS_CHAN_WIDTH_10:
local->scan_chandef.width = NL80211_CHAN_WIDTH_10;
break;
+ default:
case NL80211_BSS_CHAN_WIDTH_20:
/* If scanning on oper channel, use whatever channel-type
* is currently in use.
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 1a2941e5244f..ee30ef441f4a 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -166,6 +166,7 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
if (r->flags & IEEE80211_RATE_MANDATORY_A)
mrate = r->bitrate;
break;
+ case NL80211_BAND_S1GHZ:
case NL80211_BAND_60GHZ:
/* TODO, for now fall through */
case NUM_NL80211_BANDS:
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 21c94094a699..64a83ecd0a73 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3730,6 +3730,11 @@ u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
c->width = NL80211_CHAN_WIDTH_20_NOHT;
ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_VHT;
break;
+ case NL80211_CHAN_WIDTH_1:
+ case NL80211_CHAN_WIDTH_2:
+ case NL80211_CHAN_WIDTH_4:
+ case NL80211_CHAN_WIDTH_8:
+ case NL80211_CHAN_WIDTH_16:
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
WARN_ON_ONCE(1);
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index cddf92c5d09e..90f0f82cd9ca 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -153,6 +153,11 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
control_freq = chandef->chan->center_freq;
switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_1:
+ case NL80211_CHAN_WIDTH_2:
+ case NL80211_CHAN_WIDTH_4:
+ case NL80211_CHAN_WIDTH_8:
+ case NL80211_CHAN_WIDTH_16:
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
case NL80211_CHAN_WIDTH_20:
@@ -263,6 +268,21 @@ static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
int width;
switch (c->width) {
+ case NL80211_CHAN_WIDTH_1:
+ width = 1;
+ break;
+ case NL80211_CHAN_WIDTH_2:
+ width = 2;
+ break;
+ case NL80211_CHAN_WIDTH_4:
+ width = 4;
+ break;
+ case NL80211_CHAN_WIDTH_8:
+ width = 8;
+ break;
+ case NL80211_CHAN_WIDTH_16:
+ width = 16;
+ break;
case NL80211_CHAN_WIDTH_5:
width = 5;
break;
@@ -911,6 +931,21 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
control_freq = chandef->chan->center_freq;
switch (chandef->width) {
+ case NL80211_CHAN_WIDTH_1:
+ width = 1;
+ break;
+ case NL80211_CHAN_WIDTH_2:
+ width = 2;
+ break;
+ case NL80211_CHAN_WIDTH_4:
+ width = 4;
+ break;
+ case NL80211_CHAN_WIDTH_8:
+ width = 8;
+ break;
+ case NL80211_CHAN_WIDTH_16:
+ width = 16;
+ break;
case NL80211_CHAN_WIDTH_5:
width = 5;
break;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index c623d9bf5096..1971d7e6eb55 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -803,10 +803,11 @@ int wiphy_register(struct wiphy *wiphy)
if (WARN_ON(!sband->n_channels))
return -EINVAL;
/*
- * on 60GHz band, there are no legacy rates, so
+ * on 60GHz or sub-1Ghz band, there are no legacy rates, so
* n_bitrates is 0
*/
- if (WARN_ON(band != NL80211_BAND_60GHZ &&
+ if (WARN_ON((band != NL80211_BAND_60GHZ &&
+ band != NL80211_BAND_S1GHZ) &&
!sband->n_bitrates))
return -EINVAL;
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 4d3b76f94f55..26a977343c3b 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -102,6 +102,8 @@ u32 ieee80211_channel_to_freq_khz(int chan, enum nl80211_band band)
if (chan < 7)
return MHZ_TO_KHZ(56160 + chan * 2160);
break;
+ case NL80211_BAND_S1GHZ:
+ return 902000 + chan * 500;
default:
;
}
@@ -210,6 +212,12 @@ static void set_mandatory_flags_band(struct ieee80211_supported_band *sband)
WARN_ON(!sband->ht_cap.ht_supported);
WARN_ON((sband->ht_cap.mcs.rx_mask[0] & 0x1e) != 0x1e);
break;
+ case NL80211_BAND_S1GHZ:
+ /* Figure 9-589bd: 3 means unsupported, so != 3 means at least
+ * mandatory is ok.
+ */
+ WARN_ON((sband->s1g_cap.nss_mcs[0] & 0x3) == 0x3);
+ break;
case NUM_NL80211_BANDS:
default:
WARN_ON(1);
--
2.16.4