[PATCH v3 0/2] Add support for new channels on 60GHz band

[PATCH v3 0/2] Add support for new channels on 60GHz band

[Alexei Avshalom Lazar]

The following set of patches add support for new channels on
60GHz band and EDMG channels:
Changelog:
V3:
- Addressed to comments from the community
- Added 60G check for verifying some EDMG cases are relevant
- Used the ieee80211_sta_edmg_cap struct as the edmg channel configuration
- Updated nla_policy to NLA_POLICY_RANGE()
V2
- Addressed to comments from the community
- Align to latest Spec release

Alexei Avshalom Lazar (2):
  nl80211: Add support for EDMG channels
  wil6210: Add EDMG channel support

 drivers/net/wireless/ath/wil6210/cfg80211.c  | 205 +++++++++++++++++++++++++--
 drivers/net/wireless/ath/wil6210/txrx_edma.c |   2 +
 drivers/net/wireless/ath/wil6210/txrx_edma.h |   6 +
 drivers/net/wireless/ath/wil6210/wil6210.h   |   8 +-
 drivers/net/wireless/ath/wil6210/wmi.c       |   5 +-
 drivers/net/wireless/ath/wil6210/wmi.h       |  30 +++-
 include/net/cfg80211.h                       |  36 ++++-
 include/uapi/linux/nl80211.h                 |  22 +++
 net/wireless/chan.c                          | 158 ++++++++++++++++++++-
 net/wireless/nl80211.c                       |  35 +++++
 net/wireless/util.c                          |  42 +++++-
 11 files changed, 529 insertions(+), 20 deletions(-)

-- 
1.9.1

[PATCH v3 1/2] nl80211: Add support for EDMG channels

[Alexei Avshalom Lazar]

802.11ay specification defines Enhanced Directional Multi-Gigabit
(EDMG) STA and AP which allow channel bonding of 2 channels and more.
Introduce NL80211_ATTR_WIPHY_EDMG_CHANNELS,
NL80211_ATTR_WIPHY_EDMG_BW_CONFIG, NL80211_BAND_ATTR_EDMG_CHANNELS,
NL80211_BAND_ATTR_EDMG_BW_CONFIG and RATE_INFO_FLAGS_EDMG
that needed for enabling and configuring EDMG support.
Driver is expected to report its EDMG capabilities: whether EDMG
is supported and the supported EDMG channels.
Bitrate calculation is enhanced to take into account EDMG support
according to the 802.11ay specification.
The kernel uses NL80211_BAND_ATTR_EDMG_CHANNELS and
NL80211_BAND_ATTR_EDMG_BW_CONFIG attributes in order to publish
the EDMG capabilities to the userspace.
NL80211_BAND_ATTR_EDMG_CHANNELS is a bitmap field that indicates
the 2.16 GHz channel(s) that are allowed to be used.
If NL80211_BAND_ATTR_EDMG_CHANNELS is not set then EDMG not
supported. NL80211_BAND_ATTR_EDMG_BW_CONFIG represent the allowed
channel bandwidth configurations.
NL80211_ATTR_WIPHY_EDMG_CHANNELS and NL80211_ATTR_WIPHY_EDMG_BW_CONFIG
will be used by the userspace for AP configuration and connect command.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
---
 drivers/net/wireless/ath/wil6210/cfg80211.c |   2 +-
 include/net/cfg80211.h                      |  36 ++++++-
 include/uapi/linux/nl80211.h                |  22 ++++
 net/wireless/chan.c                         | 158 +++++++++++++++++++++++++++-
 net/wireless/nl80211.c                      |  35 ++++++
 net/wireless/util.c                         |  42 +++++++-
 6 files changed, 288 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index a1e226652..ce68fbc 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
@@ -346,7 +346,7 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
 			BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC) |
 			BIT_ULL(NL80211_STA_INFO_TX_FAILED);
 
-	sinfo->txrate.flags = RATE_INFO_FLAGS_60G;
+	sinfo->txrate.flags = RATE_INFO_FLAGS_DMG;
 	sinfo->txrate.mcs = le16_to_cpu(reply.evt.bf_mcs);
 	sinfo->rxrate.mcs = stats->last_mcs_rx;
 	sinfo->rx_bytes = stats->rx_bytes;
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 117691f..53d172f 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -321,6 +321,24 @@ struct ieee80211_sband_iftype_data {
 };
 
 /**
+ * struct ieee80211_sta_edmg_cap - EDMG capabilities
+ *
+ * This structure describes most essential parameters needed
+ * to describe 802.11ay EDMG capabilities
+ *
+ * @channels: bitmap that indicates the 2.16 GHz channel(s)
+ *	that are allowed to be used for transmissions.
+ *	Bit 0 indicates channel 1, bit 1 indicates channel 2, etc.
+ *	Set to 0 indicate EDMG not supported.
+ * @bw_config: Channel BW Configuration subfield encodes
+ *	the allowed channel bandwidth configurations
+ */
+struct ieee80211_sta_edmg_cap {
+	u8 channels;
+	u8 bw_config;
+};
+
+/**
  * struct ieee80211_supported_band - frequency band definition
  *
  * This structure describes a frequency band a wiphy
@@ -336,6 +354,7 @@ struct ieee80211_sband_iftype_data {
  * @n_bitrates: Number of bitrates in @bitrates
  * @ht_cap: HT capabilities in this band
  * @vht_cap: VHT capabilities in this band
+ * @edmg_cap: EDMG capabilities in this band
  * @n_iftype_data: number of iftype data entries
  * @iftype_data: interface type data entries.  Note that the bits in
  *	@types_mask inside this structure cannot overlap (i.e. only
@@ -350,6 +369,7 @@ struct ieee80211_supported_band {
 	int n_bitrates;
 	struct ieee80211_sta_ht_cap ht_cap;
 	struct ieee80211_sta_vht_cap vht_cap;
+	struct ieee80211_sta_edmg_cap edmg_cap;
 	u16 n_iftype_data;
 	const struct ieee80211_sband_iftype_data *iftype_data;
 };
@@ -503,12 +523,16 @@ struct key_params {
  * @center_freq1: center frequency of first segment
  * @center_freq2: center frequency of second segment
  *	(only with 80+80 MHz)
+ * @edmg: define the EDMG channels configuration.
+ *	If edmg is set, chan will define the primary channel and all other
+ *	parameters are ignored.
  */
 struct cfg80211_chan_def {
 	struct ieee80211_channel *chan;
 	enum nl80211_chan_width width;
 	u32 center_freq1;
 	u32 center_freq2;
+	struct ieee80211_sta_edmg_cap edmg;
 };
 
 /**
@@ -1144,15 +1168,17 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
  * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
  * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
  * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
- * @RATE_INFO_FLAGS_60G: 60GHz MCS
+ * @RATE_INFO_FLAGS_DMG: 60GHz MCS
  * @RATE_INFO_FLAGS_HE_MCS: HE MCS information
+ * @RATE_INFO_FLAGS_EDMG: 60GHz MCS in EDMG mode
  */
 enum rate_info_flags {
 	RATE_INFO_FLAGS_MCS			= BIT(0),
 	RATE_INFO_FLAGS_VHT_MCS			= BIT(1),
 	RATE_INFO_FLAGS_SHORT_GI		= BIT(2),
-	RATE_INFO_FLAGS_60G			= BIT(3),
+	RATE_INFO_FLAGS_DMG			= BIT(3),
 	RATE_INFO_FLAGS_HE_MCS			= BIT(4),
+	RATE_INFO_FLAGS_EDMG			= BIT(5),
 };
 
 /**
@@ -1192,6 +1218,7 @@ enum rate_info_bw {
  * @he_dcm: HE DCM value
  * @he_ru_alloc: HE RU allocation (from &enum nl80211_he_ru_alloc,
  *	only valid if bw is %RATE_INFO_BW_HE_RU)
+ * @n_bonded_ch: In case of EDMG the number of bonded channels (1-4)
  */
 struct rate_info {
 	u8 flags;
@@ -1202,6 +1229,7 @@ struct rate_info {
 	u8 he_gi;
 	u8 he_dcm;
 	u8 he_ru_alloc;
+	u8 n_bonded_ch;
 };
 
 /**
@@ -2403,6 +2431,9 @@ struct cfg80211_bss_selection {
  * @fils_erp_rrk_len: Length of @fils_erp_rrk in octets.
  * @want_1x: indicates user-space supports and wants to use 802.1X driver
  *	offload of 4-way handshake.
+ * @edmg: define the EDMG channels.
+ *	This may specify multiple channels and bonding options for the driver
+ *	to choose from, based on BSS configuration.
  */
 struct cfg80211_connect_params {
 	struct ieee80211_channel *channel;
@@ -2436,6 +2467,7 @@ struct cfg80211_connect_params {
 	const u8 *fils_erp_rrk;
 	size_t fils_erp_rrk_len;
 	bool want_1x;
+	struct ieee80211_sta_edmg_cap edmg;
 };
 
 /**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 25f70dd..0fdee62 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -52,6 +52,9 @@
 #define NL80211_MULTICAST_GROUP_NAN		"nan"
 #define NL80211_MULTICAST_GROUP_TESTMODE	"testmode"
 
+#define NL80211_EDMG_BW_CONFIG_MIN	4
+#define NL80211_EDMG_BW_CONFIG_MAX	15
+
 /**
  * DOC: Station handling
  *
@@ -2324,6 +2327,13 @@ enum nl80211_commands {
  *	should be picking up the lowest tx power, either tx power per-interface
  *	or per-station.
  *
+ * @NL80211_ATTR_WIPHY_EDMG_CHANNELS: bitmap that indicates the 2.16 GHz
+ *	channel(s) that are allowed to be used for EDMG transmissions.
+ *	Defined by IEEE 802.11 section 9.4.2.251.
+ * @NL80211_ATTR_WIPHY_EDMG_BW_CONFIG: Channel BW Configuration subfield encodes
+ *	the allowed channel bandwidth configurations.
+ *	Defined by IEEE 802.11 section 9.4.2.251, Table 13.
+ *
  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2777,6 +2787,9 @@ enum nl80211_attrs {
 	NL80211_ATTR_STA_TX_POWER_SETTING,
 	NL80211_ATTR_STA_TX_POWER,
 
+	NL80211_ATTR_WIPHY_EDMG_CHANNELS,
+	NL80211_ATTR_WIPHY_EDMG_BW_CONFIG,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,
@@ -3385,6 +3398,12 @@ enum nl80211_band_iftype_attr {
  * @NL80211_BAND_ATTR_VHT_CAPA: VHT capabilities, as in the HT information IE
  * @NL80211_BAND_ATTR_IFTYPE_DATA: nested array attribute, with each entry using
  *	attributes from &enum nl80211_band_iftype_attr
+ * @NL80211_BAND_ATTR_EDMG_CHANNELS: bitmap that indicates the 2.16 GHz
+ *	channel(s) that are allowed to be used for EDMG transmissions.
+ *	Defined by IEEE 802.11 section 9.4.2.251.
+ * @NL80211_BAND_ATTR_EDMG_BW_CONFIG: Channel BW Configuration subfield encodes
+ *	the allowed channel bandwidth configurations.
+ *	Defined by IEEE 802.11 section 9.4.2.251, Table 13.
  * @NL80211_BAND_ATTR_MAX: highest band attribute currently defined
  * @__NL80211_BAND_ATTR_AFTER_LAST: internal use
  */
@@ -3402,6 +3421,9 @@ enum nl80211_band_attr {
 	NL80211_BAND_ATTR_VHT_CAPA,
 	NL80211_BAND_ATTR_IFTYPE_DATA,
 
+	NL80211_BAND_ATTR_EDMG_CHANNELS,
+	NL80211_BAND_ATTR_EDMG_BW_CONFIG,
+
 	/* keep last */
 	__NL80211_BAND_ATTR_AFTER_LAST,
 	NL80211_BAND_ATTR_MAX = __NL80211_BAND_ATTR_AFTER_LAST - 1
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 7dc1bbd..bb3b1e7 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -14,6 +14,11 @@
 #include "core.h"
 #include "rdev-ops.h"
 
+static bool cfg80211_valid_60g_freq(u32 freq)
+{
+	return (freq >= 58320 && freq <= 70200);
+}
+
 void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
 			     struct ieee80211_channel *chan,
 			     enum nl80211_channel_type chan_type)
@@ -23,6 +28,8 @@ void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
 
 	chandef->chan = chan;
 	chandef->center_freq2 = 0;
+	chandef->edmg.bw_config = 0;
+	chandef->edmg.channels = 0;
 
 	switch (chan_type) {
 	case NL80211_CHAN_NO_HT:
@@ -47,6 +54,93 @@ void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
 }
 EXPORT_SYMBOL(cfg80211_chandef_create);
 
+static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef)
+{
+	int max_continuous = 0;
+	int num_of_enabled = 0;
+	int contiguous = 0;
+	int i;
+
+	if (!chandef->edmg.channels && !chandef->edmg.bw_config)
+		return true;
+
+	if ((!chandef->edmg.channels && chandef->edmg.bw_config) ||
+	    (chandef->edmg.channels && !chandef->edmg.bw_config) ||
+	    !cfg80211_valid_60g_freq(chandef->chan->center_freq))
+		return false;
+
+	for (i = 0; i < 6; i++) {
+		if (chandef->edmg.channels & BIT(i)) {
+			contiguous++;
+			num_of_enabled++;
+		} else {
+			contiguous = 0;
+		}
+
+		max_continuous = max(contiguous, max_continuous);
+	}
+	/* basic verification of edmg configuration according to
+	 * IEEE802.11 section 9.4.2.251
+	 */
+	/* check bw_config against contiguous edmg channels */
+	switch (chandef->edmg.bw_config) {
+	case 4:
+	case 8:
+	case 12:
+		if (max_continuous < 1)
+			return false;
+		break;
+	case 5:
+	case 9:
+	case 13:
+		if (max_continuous < 2)
+			return false;
+		break;
+	case 6:
+	case 10:
+	case 14:
+		if (max_continuous < 3)
+			return false;
+		break;
+	case 7:
+	case 11:
+	case 15:
+		if (max_continuous < 4)
+			return false;
+		break;
+
+	default:
+		return false;
+	}
+
+	/* check bw_config against aggregated (non contiguous) edmg channels */
+	switch (chandef->edmg.bw_config) {
+	case 4:
+	case 5:
+	case 6:
+	case 7:
+		break;
+	case 8:
+	case 9:
+	case 10:
+	case 11:
+		if (num_of_enabled < 2)
+			return false;
+		break;
+	case 12:
+	case 13:
+	case 14:
+	case 15:
+		if (num_of_enabled < 4 || max_continuous < 2)
+			return false;
+		break;
+	default:
+		return false;
+	}
+
+	return true;
+}
+
 bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
 {
 	u32 control_freq;
@@ -112,7 +206,7 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
 		return false;
 	}
 
-	return true;
+	return cfg80211_edmg_chandef_valid(chandef);
 }
 EXPORT_SYMBOL(cfg80211_chandef_valid);
 
@@ -721,12 +815,65 @@ static bool cfg80211_secondary_chans_ok(struct wiphy *wiphy,
 	return true;
 }
 
+/* check if the operating channels are valid and supported */
+static bool cfg80211_edmg_usable(struct wiphy *wiphy, u8 edmg_channels,
+				 u8 edmg_bw_config, int primary_channel,
+				 struct ieee80211_sta_edmg_cap *edmg_cap)
+{
+	struct ieee80211_channel *chan;
+	int i, freq;
+	int channels_counter = 0;
+
+	if (!edmg_channels && !edmg_bw_config)
+		return true;
+
+	if ((!edmg_channels && edmg_bw_config) ||
+	    (edmg_channels && !edmg_bw_config))
+		return false;
+
+	if (!(edmg_channels & BIT(primary_channel - 1)))
+		return false;
+
+	/* 60GHz channels 1..6 */
+	for (i = 0; i < 6; i++) {
+		if (!(edmg_channels & BIT(i)))
+			continue;
+
+		if (!(edmg_cap->channels & BIT(i)))
+			return false;
+
+		channels_counter++;
+
+		freq = ieee80211_channel_to_frequency(i + 1,
+						      NL80211_BAND_60GHZ);
+		chan = ieee80211_get_channel(wiphy, freq);
+		if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
+			return false;
+	}
+
+	/* IEEE802.11 allows max 4 channels */
+	if (channels_counter > 4)
+		return false;
+
+	/* check bw_config is a subset of what driver supports
+	 * (see IEEE 802.11 section 9.4.2.251, Table 13)
+	 */
+	if ((edmg_bw_config % 4) > (edmg_cap->bw_config % 4))
+		return false;
+
+	if (edmg_bw_config > edmg_cap->bw_config)
+		return false;
+
+	return true;
+}
+
 bool cfg80211_chandef_usable(struct wiphy *wiphy,
 			     const struct cfg80211_chan_def *chandef,
 			     u32 prohibited_flags)
 {
 	struct ieee80211_sta_ht_cap *ht_cap;
 	struct ieee80211_sta_vht_cap *vht_cap;
+	struct ieee80211_sta_edmg_cap *edmg_cap;
 	u32 width, control_freq, cap;
 
 	if (WARN_ON(!cfg80211_chandef_valid(chandef)))
@@ -734,6 +881,15 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy,
 
 	ht_cap = &wiphy->bands[chandef->chan->band]->ht_cap;
 	vht_cap = &wiphy->bands[chandef->chan->band]->vht_cap;
+	edmg_cap = &wiphy->bands[chandef->chan->band]->edmg_cap;
+
+	if (edmg_cap->channels &&
+	    !cfg80211_edmg_usable(wiphy,
+				  chandef->edmg.channels,
+				  chandef->edmg.bw_config,
+				  chandef->chan->hw_value,
+				  edmg_cap))
+		return false;
 
 	control_freq = chandef->chan->center_freq;
 
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index da3843a..ce6dc73 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -288,6 +288,11 @@ static int validate_ie_attr(const struct nlattr *attr,
 
 	[NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 	[NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
+	[NL80211_ATTR_WIPHY_EDMG_CHANNELS] = { .type = NLA_U8 },
+	[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
+						NL80211_EDMG_BW_CONFIG_MIN,
+						NL80211_EDMG_BW_CONFIG_MAX),
+
 	[NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 	[NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 	[NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
@@ -1501,6 +1506,15 @@ static int nl80211_send_band_rateinfo(struct sk_buff *msg,
 		nla_nest_end(msg, nl_iftype_data);
 	}
 
+	/* add EDMG info */
+	if (sband->edmg_cap.channels &&
+	    (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
+		       sband->edmg_cap.channels) ||
+	    nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
+		       sband->edmg_cap.bw_config)))
+
+		return -ENOBUFS;
+
 	/* add bitrates */
 	nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
 	if (!nl_rates)
@@ -2560,6 +2574,18 @@ int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
 				nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
 	}
 
+	if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
+		chandef->edmg.channels =
+		      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
+
+		if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
+			chandef->edmg.bw_config =
+		     nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
+	} else {
+		chandef->edmg.bw_config = 0;
+		chandef->edmg.channels = 0;
+	}
+
 	if (!cfg80211_chandef_valid(chandef)) {
 		NL_SET_ERR_MSG(extack, "invalid channel definition");
 		return -EINVAL;
@@ -9699,6 +9725,15 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
 			return -EINVAL;
 	}
 
+	if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
+		connect.edmg.channels =
+		      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
+
+		if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
+			connect.edmg.bw_config =
+		     nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
+	}
+
 	if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
 		connkeys = nl80211_parse_connkeys(rdev, info, NULL);
 		if (IS_ERR(connkeys))
diff --git a/net/wireless/util.c b/net/wireless/util.c
index cf63b63..7d06dd6 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1034,7 +1034,7 @@ static u32 cfg80211_calculate_bitrate_ht(struct rate_info *rate)
 	return (bitrate + 50000) / 100000;
 }
 
-static u32 cfg80211_calculate_bitrate_60g(struct rate_info *rate)
+static u32 cfg80211_calculate_bitrate_dmg(struct rate_info *rate)
 {
 	static const u32 __mcs2bitrate[] = {
 		/* control PHY */
@@ -1081,6 +1081,40 @@ static u32 cfg80211_calculate_bitrate_60g(struct rate_info *rate)
 	return __mcs2bitrate[rate->mcs];
 }
 
+static u32 cfg80211_calculate_bitrate_edmg(struct rate_info *rate)
+{
+	static const u32 __mcs2bitrate[] = {
+		/* control PHY */
+		[0] =   275,
+		/* SC PHY */
+		[1] =  3850,
+		[2] =  7700,
+		[3] =  9625,
+		[4] = 11550,
+		[5] = 12512, /* 1251.25 mbps */
+		[6] = 13475,
+		[7] = 15400,
+		[8] = 19250,
+		[9] = 23100,
+		[10] = 25025,
+		[11] = 26950,
+		[12] = 30800,
+		[13] = 38500,
+		[14] = 46200,
+		[15] = 50050,
+		[16] = 53900,
+		[17] = 57750,
+		[18] = 69300,
+		[19] = 75075,
+		[20] = 80850,
+	};
+
+	if (WARN_ON_ONCE(rate->mcs >= ARRAY_SIZE(__mcs2bitrate)))
+		return 0;
+
+	return __mcs2bitrate[rate->mcs] * rate->n_bonded_ch;
+}
+
 static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
 {
 	static const u32 base[4][10] = {
@@ -1253,8 +1287,10 @@ u32 cfg80211_calculate_bitrate(struct rate_info *rate)
 {
 	if (rate->flags & RATE_INFO_FLAGS_MCS)
 		return cfg80211_calculate_bitrate_ht(rate);
-	if (rate->flags & RATE_INFO_FLAGS_60G)
-		return cfg80211_calculate_bitrate_60g(rate);
+	if (rate->flags & RATE_INFO_FLAGS_DMG)
+		return cfg80211_calculate_bitrate_dmg(rate);
+	if (rate->flags & RATE_INFO_FLAGS_EDMG)
+		return cfg80211_calculate_bitrate_edmg(rate);
 	if (rate->flags & RATE_INFO_FLAGS_VHT_MCS)
 		return cfg80211_calculate_bitrate_vht(rate);
 	if (rate->flags & RATE_INFO_FLAGS_HE_MCS)
-- 
1.9.1

[PATCH v3 2/2] wil6210: Add EDMG channel support

[Alexei Avshalom Lazar]

Add support for Enhanced Directional Multi-Gigabit (EDMG) channels 9-11.
wil6210 reports it's EDMG capabilities (that are also based on FW
capability) to cfg80211 by filling
wiphy->bands[NL80211_BAND_60GHZ]->edmg_cap.
wil6210 handles edmg.channels and edmg.bw_config requested in connect
and start_ap operations.

Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
---
 drivers/net/wireless/ath/wil6210/cfg80211.c  | 205 +++++++++++++++++++++++++--
 drivers/net/wireless/ath/wil6210/txrx_edma.c |   2 +
 drivers/net/wireless/ath/wil6210/txrx_edma.h |   6 +
 drivers/net/wireless/ath/wil6210/wil6210.h   |   8 +-
 drivers/net/wireless/ath/wil6210/wmi.c       |   5 +-
 drivers/net/wireless/ath/wil6210/wmi.h       |  30 +++-
 6 files changed, 242 insertions(+), 14 deletions(-)

diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index ce68fbc..a68f148 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
@@ -25,6 +25,22 @@
 
 #define WIL_MAX_ROC_DURATION_MS 5000
 
+#define WIL_EDMG_CHANNEL_9_SUBCHANNELS	(BIT(0) | BIT(1))
+#define WIL_EDMG_CHANNEL_10_SUBCHANNELS	(BIT(1) | BIT(2))
+#define WIL_EDMG_CHANNEL_11_SUBCHANNELS	(BIT(2) | BIT(3))
+
+/* WIL_EDMG_BW_CONFIGURATION define the allowed channel bandwidth
+ * configurations as defined by IEEE 802.11 section 9.4.2.251, Table 13.
+ * The value 5 allowing CB1 and CB2 of adjacent channels.
+ */
+#define WIL_EDMG_BW_CONFIGURATION 5
+
+/* WIL_EDMG_CHANNELS is a bitmap that indicates the 2.16 GHz channel(s) that
+ * are allowed to be used for EDMG transmissions in the BSS as defined by
+ * IEEE 802.11 section 9.4.2.251.
+ */
+#define WIL_EDMG_CHANNELS (BIT(0) | BIT(1) | BIT(2) | BIT(3))
+
 bool disable_ap_sme;
 module_param(disable_ap_sme, bool, 0444);
 MODULE_PARM_DESC(disable_ap_sme, " let user space handle AP mode SME");
@@ -51,6 +67,39 @@
 	CHAN60G(4, 0),
 };
 
+/* Rx channel bonding mode */
+enum wil_rx_cb_mode {
+	WIL_RX_CB_MODE_DMG,
+	WIL_RX_CB_MODE_EDMG,
+	WIL_RX_CB_MODE_WIDE,
+};
+
+static int wil_rx_cb_mode_to_n_bonded(u8 cb_mode)
+{
+	switch (cb_mode) {
+	case WIL_RX_CB_MODE_DMG:
+	case WIL_RX_CB_MODE_EDMG:
+		return 1;
+	case WIL_RX_CB_MODE_WIDE:
+		return 2;
+	default:
+		return 1;
+	}
+}
+
+static int wil_tx_cb_mode_to_n_bonded(u8 cb_mode)
+{
+	switch (cb_mode) {
+	case WMI_TX_MODE_DMG:
+	case WMI_TX_MODE_EDMG_CB1:
+		return 1;
+	case WMI_TX_MODE_EDMG_CB2:
+		return 2;
+	default:
+		return 1;
+	}
+}
+
 static void
 wil_memdup_ie(u8 **pdst, size_t *pdst_len, const u8 *src, size_t src_len)
 {
@@ -82,6 +131,12 @@ void update_supported_bands(struct wil6210_priv *wil)
 
 	wiphy->bands[NL80211_BAND_60GHZ]->n_channels =
 						wil_num_supported_channels(wil);
+
+	if (test_bit(WMI_FW_CAPABILITY_CHANNEL_BONDING, wil->fw_capabilities))
+		wiphy->bands[NL80211_BAND_60GHZ]->edmg_cap.channels =
+							WIL_EDMG_CHANNELS;
+		wiphy->bands[NL80211_BAND_60GHZ]->edmg_cap.bw_config =
+						      WIL_EDMG_BW_CONFIGURATION;
 }
 
 /* Vendor id to be used in vendor specific command and events
@@ -296,6 +351,86 @@ int wil_iftype_nl2wmi(enum nl80211_iftype type)
 	return -EOPNOTSUPP;
 }
 
+int wil_spec2wmi_ch(u8 spec_ch, u8 *wmi_ch)
+{
+	switch (spec_ch) {
+	case 1:
+		*wmi_ch = WMI_CHANNEL_1;
+		break;
+	case 2:
+		*wmi_ch = WMI_CHANNEL_2;
+		break;
+	case 3:
+		*wmi_ch = WMI_CHANNEL_3;
+		break;
+	case 4:
+		*wmi_ch = WMI_CHANNEL_4;
+		break;
+	case 5:
+		*wmi_ch = WMI_CHANNEL_5;
+		break;
+	case 6:
+		*wmi_ch = WMI_CHANNEL_6;
+		break;
+	case 9:
+		*wmi_ch = WMI_CHANNEL_9;
+		break;
+	case 10:
+		*wmi_ch = WMI_CHANNEL_10;
+		break;
+	case 11:
+		*wmi_ch = WMI_CHANNEL_11;
+		break;
+	case 12:
+		*wmi_ch = WMI_CHANNEL_12;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+int wil_wmi2spec_ch(u8 wmi_ch, u8 *spec_ch)
+{
+	switch (wmi_ch) {
+	case WMI_CHANNEL_1:
+		*spec_ch = 1;
+		break;
+	case WMI_CHANNEL_2:
+		*spec_ch = 2;
+		break;
+	case WMI_CHANNEL_3:
+		*spec_ch = 3;
+		break;
+	case WMI_CHANNEL_4:
+		*spec_ch = 4;
+		break;
+	case WMI_CHANNEL_5:
+		*spec_ch = 5;
+		break;
+	case WMI_CHANNEL_6:
+		*spec_ch = 6;
+		break;
+	case WMI_CHANNEL_9:
+		*spec_ch = 9;
+		break;
+	case WMI_CHANNEL_10:
+		*spec_ch = 10;
+		break;
+	case WMI_CHANNEL_11:
+		*spec_ch = 11;
+		break;
+	case WMI_CHANNEL_12:
+		*spec_ch = 12;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
 		       struct station_info *sinfo)
 {
@@ -310,6 +445,7 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
 	} __packed reply;
 	struct wil_net_stats *stats = &wil->sta[cid].stats;
 	int rc;
+	u8 txflag = RATE_INFO_FLAGS_DMG;
 
 	memset(&reply, 0, sizeof(reply));
 
@@ -322,7 +458,8 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
 		    "  MCS %d TSF 0x%016llx\n"
 		    "  BF status 0x%08x RSSI %d SQI %d%%\n"
 		    "  Tx Tpt %d goodput %d Rx goodput %d\n"
-		    "  Sectors(rx:tx) my %d:%d peer %d:%d\n""}\n",
+		    "  Sectors(rx:tx) my %d:%d peer %d:%d\n"
+		    "  Tx mode %d}\n",
 		    cid, vif->mid, le16_to_cpu(reply.evt.bf_mcs),
 		    le64_to_cpu(reply.evt.tsf), reply.evt.status,
 		    reply.evt.rssi,
@@ -333,7 +470,8 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
 		    le16_to_cpu(reply.evt.my_rx_sector),
 		    le16_to_cpu(reply.evt.my_tx_sector),
 		    le16_to_cpu(reply.evt.other_rx_sector),
-		    le16_to_cpu(reply.evt.other_tx_sector));
+		    le16_to_cpu(reply.evt.other_tx_sector),
+		    reply.evt.tx_mode);
 
 	sinfo->generation = wil->sinfo_gen;
 
@@ -346,9 +484,16 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
 			BIT_ULL(NL80211_STA_INFO_RX_DROP_MISC) |
 			BIT_ULL(NL80211_STA_INFO_TX_FAILED);
 
-	sinfo->txrate.flags = RATE_INFO_FLAGS_DMG;
+	if (wil->use_enhanced_dma_hw && reply.evt.tx_mode != WMI_TX_MODE_DMG)
+		txflag = RATE_INFO_FLAGS_EDMG;
+
+	sinfo->txrate.flags = txflag;
 	sinfo->txrate.mcs = le16_to_cpu(reply.evt.bf_mcs);
 	sinfo->rxrate.mcs = stats->last_mcs_rx;
+	sinfo->txrate.n_bonded_ch =
+				  wil_tx_cb_mode_to_n_bonded(reply.evt.tx_mode);
+	sinfo->rxrate.n_bonded_ch =
+			     wil_rx_cb_mode_to_n_bonded(stats->last_cb_mode_rx);
 	sinfo->rx_bytes = stats->rx_bytes;
 	sinfo->rx_packets = stats->rx_packets;
 	sinfo->rx_dropped_misc = stats->rx_dropped;
@@ -1006,6 +1151,33 @@ static int wil_ft_connect(struct wiphy *wiphy,
 	return rc;
 }
 
+static int wil_get_wmi_edmg_channel(struct wil6210_priv *wil, u8 edmg_bw_config,
+				    u8 edmg_channels, u8 *wmi_ch)
+{
+	if (!edmg_bw_config) {
+		*wmi_ch = 0;
+		return 0;
+	} else if (edmg_bw_config == WIL_EDMG_BW_CONFIGURATION) {
+		/* convert from edmg channel bitmap into edmg channel number */
+		switch (edmg_channels) {
+		case WIL_EDMG_CHANNEL_9_SUBCHANNELS:
+			return wil_spec2wmi_ch(9, wmi_ch);
+		case WIL_EDMG_CHANNEL_10_SUBCHANNELS:
+			return wil_spec2wmi_ch(10, wmi_ch);
+		case WIL_EDMG_CHANNEL_11_SUBCHANNELS:
+			return wil_spec2wmi_ch(11, wmi_ch);
+		default:
+			wil_err(wil, "Unsupported edmg channel bitmap 0x%x\n",
+				edmg_channels);
+			return -EINVAL;
+		}
+	} else {
+		wil_err(wil, "Unsupported EDMG BW configuration %d\n",
+			edmg_bw_config);
+		return -EINVAL;
+	}
+}
+
 static int wil_cfg80211_connect(struct wiphy *wiphy,
 				struct net_device *ndev,
 				struct cfg80211_connect_params *sme)
@@ -1151,6 +1323,11 @@ static int wil_cfg80211_connect(struct wiphy *wiphy,
 	memcpy(conn.ssid, ssid_eid+2, conn.ssid_len);
 	conn.channel = ch - 1;
 
+	rc = wil_get_wmi_edmg_channel(wil, sme->edmg.bw_config,
+				      sme->edmg.channels, &conn.edmg_channel);
+	if (rc < 0)
+		return rc;
+
 	ether_addr_copy(conn.bssid, bss->bssid);
 	ether_addr_copy(conn.dst_mac, bss->bssid);
 
@@ -1707,7 +1884,7 @@ static int _wil_cfg80211_set_ies(struct wil6210_vif *vif,
 static int _wil_cfg80211_start_ap(struct wiphy *wiphy,
 				  struct net_device *ndev,
 				  const u8 *ssid, size_t ssid_len, u32 privacy,
-				  int bi, u8 chan,
+				  int bi, u8 chan, u8 wmi_edmg_channel,
 				  struct cfg80211_beacon_data *bcon,
 				  u8 hidden_ssid, u32 pbss)
 {
@@ -1770,6 +1947,7 @@ static int _wil_cfg80211_start_ap(struct wiphy *wiphy,
 
 	vif->privacy = privacy;
 	vif->channel = chan;
+	vif->wmi_edmg_channel = wmi_edmg_channel;
 	vif->hidden_ssid = hidden_ssid;
 	vif->pbss = pbss;
 	vif->bi = bi;
@@ -1780,7 +1958,8 @@ static int _wil_cfg80211_start_ap(struct wiphy *wiphy,
 	if (!wil_has_other_active_ifaces(wil, ndev, false, true))
 		wil6210_bus_request(wil, WIL_MAX_BUS_REQUEST_KBPS);
 
-	rc = wmi_pcp_start(vif, bi, wmi_nettype, chan, hidden_ssid, is_go);
+	rc = wmi_pcp_start(vif, bi, wmi_nettype, chan, wmi_edmg_channel,
+			   hidden_ssid, is_go);
 	if (rc)
 		goto err_pcp_start;
 
@@ -1832,7 +2011,8 @@ void wil_cfg80211_ap_recovery(struct wil6210_priv *wil)
 		rc = _wil_cfg80211_start_ap(wiphy, ndev,
 					    vif->ssid, vif->ssid_len,
 					    vif->privacy, vif->bi,
-					    vif->channel, &bcon,
+					    vif->channel,
+					    vif->wmi_edmg_channel, &bcon,
 					    vif->hidden_ssid, vif->pbss);
 		if (rc) {
 			wil_err(wil, "vif %d recovery failed (%d)\n", i, rc);
@@ -1882,7 +2062,8 @@ static int wil_cfg80211_change_beacon(struct wiphy *wiphy,
 		rc = _wil_cfg80211_start_ap(wiphy, ndev, vif->ssid,
 					    vif->ssid_len, privacy,
 					    wdev->beacon_interval,
-					    vif->channel, bcon,
+					    vif->channel,
+					    vif->wmi_edmg_channel, bcon,
 					    vif->hidden_ssid,
 					    vif->pbss);
 	} else {
@@ -1901,10 +2082,17 @@ static int wil_cfg80211_start_ap(struct wiphy *wiphy,
 	struct ieee80211_channel *channel = info->chandef.chan;
 	struct cfg80211_beacon_data *bcon = &info->beacon;
 	struct cfg80211_crypto_settings *crypto = &info->crypto;
+	u8 wmi_edmg_channel;
 	u8 hidden_ssid;
 
 	wil_dbg_misc(wil, "start_ap\n");
 
+	rc = wil_get_wmi_edmg_channel(wil, info->chandef.edmg.bw_config,
+				      info->chandef.edmg.channels,
+				      &wmi_edmg_channel);
+	if (rc < 0)
+		return rc;
+
 	if (!channel) {
 		wil_err(wil, "AP: No channel???\n");
 		return -EINVAL;
@@ -1944,7 +2132,8 @@ static int wil_cfg80211_start_ap(struct wiphy *wiphy,
 	rc = _wil_cfg80211_start_ap(wiphy, ndev,
 				    info->ssid, info->ssid_len, info->privacy,
 				    info->beacon_interval, channel->hw_value,
-				    bcon, hidden_ssid, info->pbss);
+				    wmi_edmg_channel, bcon, hidden_ssid,
+				    info->pbss);
 
 	return rc;
 }
diff --git a/drivers/net/wireless/ath/wil6210/txrx_edma.c b/drivers/net/wireless/ath/wil6210/txrx_edma.c
index c387738..0c9bb2c 100644
--- a/drivers/net/wireless/ath/wil6210/txrx_edma.c
+++ b/drivers/net/wireless/ath/wil6210/txrx_edma.c
@@ -1006,6 +1006,8 @@ static struct sk_buff *wil_sring_reap_rx_edma(struct wil6210_priv *wil,
 			stats->rx_per_mcs[stats->last_mcs_rx]++;
 	}
 
+	stats->last_cb_mode_rx  = wil_rx_status_get_cb_mode(msg);
+
 	if (!wil->use_rx_hw_reordering && !wil->use_compressed_rx_status &&
 	    wil_check_bar(wil, msg, cid, skb, stats) == -EAGAIN) {
 		kfree_skb(skb);
diff --git a/drivers/net/wireless/ath/wil6210/txrx_edma.h b/drivers/net/wireless/ath/wil6210/txrx_edma.h
index 343516a..2680ffc 100644
--- a/drivers/net/wireless/ath/wil6210/txrx_edma.h
+++ b/drivers/net/wireless/ath/wil6210/txrx_edma.h
@@ -366,6 +366,12 @@ static inline u8 wil_rx_status_get_mcs(void *msg)
 			    16, 21);
 }
 
+static inline u8 wil_rx_status_get_cb_mode(void *msg)
+{
+	return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d1,
+			    22, 23);
+}
+
 static inline u16 wil_rx_status_get_flow_id(void *msg)
 {
 	return WIL_GET_BITS(((struct wil_rx_status_compressed *)msg)->d0,
diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h
index e1b1039b..d32c0bf 100644
--- a/drivers/net/wireless/ath/wil6210/wil6210.h
+++ b/drivers/net/wireless/ath/wil6210/wil6210.h
@@ -590,6 +590,7 @@ struct wil_net_stats {
 	unsigned long	rx_amsdu_error; /* eDMA specific */
 	unsigned long	rx_csum_err;
 	u16 last_mcs_rx;
+	u8 last_cb_mode_rx;
 	u64 rx_per_mcs[WIL_MCS_MAX + 1];
 	u32 ft_roams; /* relevant in STA mode */
 };
@@ -851,6 +852,7 @@ struct wil6210_vif {
 	DECLARE_BITMAP(status, wil_vif_status_last);
 	u32 privacy; /* secure connection? */
 	u16 channel; /* relevant in AP mode */
+	u8 wmi_edmg_channel; /* relevant in AP mode */
 	u8 hidden_ssid; /* relevant in AP mode */
 	u32 ap_isolate; /* no intra-BSS communication */
 	bool pbss;
@@ -1313,7 +1315,7 @@ int wil_cid_fill_sinfo(struct wil6210_vif *vif, int cid,
 
 int wmi_set_mac_address(struct wil6210_priv *wil, void *addr);
 int wmi_pcp_start(struct wil6210_vif *vif, int bi, u8 wmi_nettype, u8 chan,
-		  u8 hidden_ssid, u8 is_go);
+		  u8 edmg_chan, u8 hidden_ssid, u8 is_go);
 int wmi_pcp_stop(struct wil6210_vif *vif);
 int wmi_led_cfg(struct wil6210_priv *wil, bool enable);
 int wmi_abort_scan(struct wil6210_vif *vif);
@@ -1389,6 +1391,10 @@ int wmi_start_sched_scan(struct wil6210_priv *wil,
 int wmi_mgmt_tx_ext(struct wil6210_vif *vif, const u8 *buf, size_t len,
 		    u8 channel, u16 duration_ms);
 
+int wil_wmi2spec_ch(u8 wmi_ch, u8 *spec_ch);
+int wil_spec2wmi_ch(u8 spec_ch, u8 *wmi_ch);
+void wil_update_supported_bands(struct wil6210_priv *wil);
+
 int reverse_memcmp(const void *cs, const void *ct, size_t count);
 
 /* WMI for enhanced DMA */
diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index bda4a97..fe8530d 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -2123,8 +2123,8 @@ int wmi_led_cfg(struct wil6210_priv *wil, bool enable)
 	return rc;
 }
 
-int wmi_pcp_start(struct wil6210_vif *vif,
-		  int bi, u8 wmi_nettype, u8 chan, u8 hidden_ssid, u8 is_go)
+int wmi_pcp_start(struct wil6210_vif *vif, int bi, u8 wmi_nettype,
+		  u8 chan, u8 wmi_edmg_chan, u8 hidden_ssid, u8 is_go)
 {
 	struct wil6210_priv *wil = vif_to_wil(vif);
 	int rc;
@@ -2134,6 +2134,7 @@ int wmi_pcp_start(struct wil6210_vif *vif,
 		.network_type = wmi_nettype,
 		.disable_sec_offload = 1,
 		.channel = chan - 1,
+		.edmg_channel = wmi_edmg_chan,
 		.pcp_max_assoc_sta = max_assoc_sta,
 		.hidden_ssid = hidden_ssid,
 		.is_go = is_go,
diff --git a/drivers/net/wireless/ath/wil6210/wmi.h b/drivers/net/wireless/ath/wil6210/wmi.h
index b668758..1b39aeb 100644
--- a/drivers/net/wireless/ath/wil6210/wmi.h
+++ b/drivers/net/wireless/ath/wil6210/wmi.h
@@ -95,6 +95,7 @@ enum wmi_fw_capability {
 	WMI_FW_CAPABILITY_SET_SILENT_RSSI_TABLE		= 13,
 	WMI_FW_CAPABILITY_LO_POWER_CALIB_FROM_OTP	= 14,
 	WMI_FW_CAPABILITY_PNO				= 15,
+	WMI_FW_CAPABILITY_CHANNEL_BONDING		= 17,
 	WMI_FW_CAPABILITY_REF_CLOCK_CONTROL		= 18,
 	WMI_FW_CAPABILITY_AP_SME_OFFLOAD_NONE		= 19,
 	WMI_FW_CAPABILITY_MULTI_VIFS			= 20,
@@ -355,6 +356,19 @@ enum wmi_connect_ctrl_flag_bits {
 
 #define WMI_MAX_SSID_LEN	(32)
 
+enum wmi_channel {
+	WMI_CHANNEL_1	= 0x00,
+	WMI_CHANNEL_2	= 0x01,
+	WMI_CHANNEL_3	= 0x02,
+	WMI_CHANNEL_4	= 0x03,
+	WMI_CHANNEL_5	= 0x04,
+	WMI_CHANNEL_6	= 0x05,
+	WMI_CHANNEL_9	= 0x06,
+	WMI_CHANNEL_10	= 0x07,
+	WMI_CHANNEL_11	= 0x08,
+	WMI_CHANNEL_12	= 0x09,
+};
+
 /* WMI_CONNECT_CMDID */
 struct wmi_connect_cmd {
 	u8 network_type;
@@ -366,8 +380,12 @@ struct wmi_connect_cmd {
 	u8 group_crypto_len;
 	u8 ssid_len;
 	u8 ssid[WMI_MAX_SSID_LEN];
+	/* enum wmi_channel WMI_CHANNEL_1..WMI_CHANNEL_6; for EDMG this is
+	 * the primary channel number
+	 */
 	u8 channel;
-	u8 reserved0;
+	/* enum wmi_channel WMI_CHANNEL_9..WMI_CHANNEL_12 */
+	u8 edmg_channel;
 	u8 bssid[WMI_MAC_LEN];
 	__le32 ctrl_flags;
 	u8 dst_mac[WMI_MAC_LEN];
@@ -2267,7 +2285,9 @@ struct wmi_notify_req_done_event {
 	__le32 status;
 	__le64 tsf;
 	s8 rssi;
-	u8 reserved0[3];
+	/* enum wmi_edmg_tx_mode */
+	u8 tx_mode;
+	u8 reserved0[2];
 	__le32 tx_tpt;
 	__le32 tx_goodput;
 	__le32 rx_goodput;
@@ -2283,8 +2303,12 @@ struct wmi_notify_req_done_event {
 
 /* WMI_CONNECT_EVENTID */
 struct wmi_connect_event {
+	/* enum wmi_channel WMI_CHANNEL_1..WMI_CHANNEL_6; for EDMG this is
+	 * the primary channel number
+	 */
 	u8 channel;
-	u8 reserved0;
+	/* enum wmi_channel WMI_CHANNEL_9..WMI_CHANNEL_12 */
+	u8 edmg_channel;
 	u8 bssid[WMI_MAC_LEN];
 	__le16 listen_interval;
 	__le16 beacon_interval;
-- 
1.9.1

Re: [PATCH v3 1/2] nl80211: Add support for EDMG channels

[Johannes Berg]

On Tue, 2019-06-25 at 13:29 +0300, Alexei Avshalom Lazar wrote:
> 
>  /**
> + * struct ieee80211_sta_edmg_cap - EDMG capabilities
> + *
> + * This structure describes most essential parameters needed
> + * to describe 802.11ay EDMG capabilities
> + *
> + * @channels: bitmap that indicates the 2.16 GHz channel(s)
> + *	that are allowed to be used for transmissions.
> + *	Bit 0 indicates channel 1, bit 1 indicates channel 2, etc.
> + *	Set to 0 indicate EDMG not supported.
> + * @bw_config: Channel BW Configuration subfield encodes
> + *	the allowed channel bandwidth configurations
> + */
> +struct ieee80211_sta_edmg_cap {
> +	u8 channels;
> +	u8 bw_config;
> +};

[...]

> + * @edmg: define the EDMG channels configuration.
> + *	If edmg is set, chan will define the primary channel and all other
> + *	parameters are ignored.
>   
>  struct cfg80211_chan_def {

Thinking out loud, maybe this should say "If edmg is requested (i.e. the
.channels member is non-zero) [...]" or so?

> @@ -1192,6 +1218,7 @@ enum rate_info_bw {
>   * @he_dcm: HE DCM value
>   * @he_ru_alloc: HE RU allocation (from &enum nl80211_he_ru_alloc,
>   *	only valid if bw is %RATE_INFO_BW_HE_RU)
> + * @n_bonded_ch: In case of EDMG the number of bonded channels (1-4)

So, just for the stupid me because I didn't really read the spec.

You have N channels (can only be 8 since you use a u8, looking at the
code further it looks like there are only 7) and edmg_cap::channels
indicates which are supported/requested, and then edmg_cap::bw_config
indicates how the channels are used?

I'm not sure I understand this part, because if you, say, request
channels 1 and 2 (channels=0x3) then what configurations could be
possible below that?

Oh, something about the primary channel maybe?


I guess I would've expected something like a list of bitmaps that the
device supports, and then at runtime you select only one bitmap.

If I have channels 1 and 2 enabled, how do the configurations differ?

Clearly they don't differ enough to make capturing them in the rate
worthwhile, here n_bonded_ch would presumably only be 2, and that's
enough to tell the rate. What then does the configuration mean?


It seems to me that you should, however, expose n_bonded_ch to
userspace? We do expose all the details about the bitrate normally, see
nl80211_put_sta_rate(). We do calculate the bitrate to expose that too,
but do expose all the details too.

Hmm. Looking at that, it looks like DMG doesn't actually do that. So
perhaps not, though it seems to me that it ought to be possible?

> @@ -2436,6 +2467,7 @@ struct cfg80211_connect_params {
>  	const u8 *fils_erp_rrk;
>  	size_t fils_erp_rrk_len;
>  	bool want_1x;
> +	struct ieee80211_sta_edmg_cap edmg;

Maybe we really should rename this struct type? It's not a "capability"
here.

> +static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef)
> +{
> +	int max_continuous = 0;
> +	int num_of_enabled = 0;
> +	int contiguous = 0;

max_continuous vs. contiguous is even more confusing now :-)


> +		max_continuous = max(contiguous, max_continuous);

See? :)

> +	/* basic verification of edmg configuration according to
> +	 * IEEE802.11 section 9.4.2.251

All the IEEE 802.11 references (more than just this one) ... please
qualify them with a version. I'm thinking these are not in -2016, so
probably 802.11ay (perhaps even draft?)

> +	 */
> +	/* check bw_config against contiguous edmg channels */
> +	switch (chandef->edmg.bw_config) {
> +	case 4:
> +	case 8:
> +	case 12:
> +		if (max_continuous < 1)
> +			return false;
> +		break;

I guess I really should try to find a copy of the appropriate spec ...

johannes

Re: [PATCH v3 1/2] nl80211: Add support for EDMG channels

[Alexei Lazar]

On 2019-06-28 16:21, Johannes Berg wrote:
> On Tue, 2019-06-25 at 13:29 +0300, Alexei Avshalom Lazar wrote:

Hi Johannes,

Again, Thank you for the review, comments inline.

Thanks,
Alex.

>> 
>>  /**
>> + * struct ieee80211_sta_edmg_cap - EDMG capabilities
>> + *
>> + * This structure describes most essential parameters needed
>> + * to describe 802.11ay EDMG capabilities
>> + *
>> + * @channels: bitmap that indicates the 2.16 GHz channel(s)
>> + *	that are allowed to be used for transmissions.
>> + *	Bit 0 indicates channel 1, bit 1 indicates channel 2, etc.
>> + *	Set to 0 indicate EDMG not supported.
>> + * @bw_config: Channel BW Configuration subfield encodes
>> + *	the allowed channel bandwidth configurations
>> + */
>> +struct ieee80211_sta_edmg_cap {
>> +	u8 channels;
>> +	u8 bw_config;
>> +};
> 
> [...]
> 
>> + * @edmg: define the EDMG channels configuration.
>> + *	If edmg is set, chan will define the primary channel and all other
>> + *	parameters are ignored.
>> 
>>  struct cfg80211_chan_def {
> 
> Thinking out loud, maybe this should say "If edmg is requested (i.e. 
> the
> .channels member is non-zero) [...]" or so?

Done.

> 
>> @@ -1192,6 +1218,7 @@ enum rate_info_bw {
>>   * @he_dcm: HE DCM value
>>   * @he_ru_alloc: HE RU allocation (from &enum nl80211_he_ru_alloc,
>>   *	only valid if bw is %RATE_INFO_BW_HE_RU)
>> + * @n_bonded_ch: In case of EDMG the number of bonded channels (1-4)
> 
> So, just for the stupid me because I didn't really read the spec.
> 
> You have N channels (can only be 8 since you use a u8, looking at the
> code further it looks like there are only 7) and edmg_cap::channels
> indicates which are supported/requested, and then edmg_cap::bw_config
> indicates how the channels are used?
> 
> I'm not sure I understand this part, because if you, say, request
> channels 1 and 2 (channels=0x3) then what configurations could be
> possible below that?
> 
> Oh, something about the primary channel maybe?
> 
> 
> I guess I would've expected something like a list of bitmaps that the
> device supports, and then at runtime you select only one bitmap.
> 
> If I have channels 1 and 2 enabled, how do the configurations differ?
> 
> Clearly they don't differ enough to make capturing them in the rate
> worthwhile, here n_bonded_ch would presumably only be 2, and that's
> enough to tell the rate. What then does the configuration mean?

Channels is a bitmap of 2.16GHz (normal) channels 1..6
bw_config defines the allowed combinations (bonding) of these "normal"
channels.
Let's say driver reports support for channels number 1,2,3 
(channels=0x7).
Example #1: driver reports bw_config=5
bw_config=5 allows combinations of 1 or 2 channels.
It means driver can operate in one of these combinations:
Channel 1 only
Channel 2 only
Channel 3 only
Channels 1+2 (cb2)
Channels 2+3 (cb2)

Example #2: driver reports bw_config=10
bw_config=10 allows combinations of 1,2 or 3 channels.
It means driver can operate in one of these combinations:
Channel 1 only
Channel 2 only
Channel 3 only
Channels 1+2 (cb2)
Channels 2+3 (cb2)
Channels 1+3 (cb2) - note 1 & 3 are non-contiguous channels, This 
combination
is not allow in bw_config=5
Channels 1+2+3 (cb3)

The primary channel BTW must be one of the operational channels so if
driver choose channels 1+3 then primary channel cannot be 2.

> 
> 
> It seems to me that you should, however, expose n_bonded_ch to
> userspace? We do expose all the details about the bitrate normally, see
> nl80211_put_sta_rate(). We do calculate the bitrate to expose that too,
> but do expose all the details too.
> 
> Hmm. Looking at that, it looks like DMG doesn't actually do that. So
> perhaps not, though it seems to me that it ought to be possible?

We will look into that and address in separate patch.

> 
>> @@ -2436,6 +2467,7 @@ struct cfg80211_connect_params {
>>  	const u8 *fils_erp_rrk;
>>  	size_t fils_erp_rrk_len;
>>  	bool want_1x;
>> +	struct ieee80211_sta_edmg_cap edmg;
> 
> Maybe we really should rename this struct type? It's not a "capability"
> here.

Done.

> 
>> +static bool cfg80211_edmg_chandef_valid(const struct 
>> cfg80211_chan_def *chandef)
>> +{
>> +	int max_continuous = 0;
>> +	int num_of_enabled = 0;
>> +	int contiguous = 0;
> 
> max_continuous vs. contiguous is even more confusing now :-)
> 
> 
>> +		max_continuous = max(contiguous, max_continuous);
> 
> See? :)

Done.

> 
>> +	/* basic verification of edmg configuration according to
>> +	 * IEEE802.11 section 9.4.2.251
> 
> All the IEEE 802.11 references (more than just this one) ... please
> qualify them with a version. I'm thinking these are not in -2016, so
> probably 802.11ay (perhaps even draft?)

Done.

> 
>> +	 */
>> +	/* check bw_config against contiguous edmg channels */
>> +	switch (chandef->edmg.bw_config) {
>> +	case 4:
>> +	case 8:
>> +	case 12:
>> +		if (max_continuous < 1)
>> +			return false;
>> +		break;
> 
> I guess I really should try to find a copy of the appropriate spec ...
> 
> johannes

-- 
Alexei Lazar
Qualcomm Israel, on behalf of Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum a
Linux Foundation Collaborative Project

Re: [PATCH v3 1/2] nl80211: Add support for EDMG channels

[Johannes Berg]

Hi Alexei,

> Channels is a bitmap of 2.16GHz (normal) channels 1..6
> bw_config defines the allowed combinations (bonding) of these "normal"
> channels.

But bw_config is not itself some sort of bitmap, it's just a kind of
enum value, right? Maybe we should actually use an enum for it rather
than having the hardcoded values?

> Let's say driver reports support for channels number 1,2,3 
> (channels=0x7).
> Example #1: driver reports bw_config=5
> bw_config=5 allows combinations of 1 or 2 channels.
> It means driver can operate in one of these combinations:
> Channel 1 only
> Channel 2 only
> Channel 3 only
> Channels 1+2 (cb2)
> Channels 2+3 (cb2)

OK.

> The primary channel BTW must be one of the operational channels so if
> driver choose channels 1+3 then primary channel cannot be 2.

Makes sense.

> > It seems to me that you should, however, expose n_bonded_ch to
> > userspace? We do expose all the details about the bitrate normally, see
> > nl80211_put_sta_rate(). We do calculate the bitrate to expose that too,
> > but do expose all the details too.
> > 
> > Hmm. Looking at that, it looks like DMG doesn't actually do that. So
> > perhaps not, though it seems to me that it ought to be possible?
> 
> We will look into that and address in separate patch.

Right, separate patch definitely makes sense. Thanks!

> > > +	/* check bw_config against contiguous edmg channels */
> > > +	switch (chandef->edmg.bw_config) {
> > > +	case 4:
> > > +	case 8:
> > > +	case 12:
> > > +		if (max_continuous < 1)
> > > +			return false;
> > > +		break;

I think that indeed this could be clearer if you have an enum.

johannes

Re: [PATCH v3 0/2] Add support for new channels on 60GHz band

[Kalle Valo]

Alexei Avshalom Lazar <ailizaro@codeaurora.org> writes:

> The following set of patches add support for new channels on
> 60GHz band and EDMG channels:
> -Nl80211 support for EDMG channels
> -Wil6210 support for EDMG channels
>
> Alexei Avshalom Lazar (2):
>   nl80211: Add support for EDMG channels
>   wil6210: Add EDMG channel support

Please always add a changelog to help the reviewers:

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches#changelog_missing

-- 
Kalle Valo

[PATCH v3 0/2] Add support for new channels on 60GHz band

[Alexei Avshalom Lazar]

The following set of patches add support for new channels on
60GHz band and EDMG channels:
-Nl80211 support for EDMG channels
-Wil6210 support for EDMG channels

Alexei Avshalom Lazar (2):
  nl80211: Add support for EDMG channels
  wil6210: Add EDMG channel support

 drivers/net/wireless/ath/wil6210/cfg80211.c  | 205 +++++++++++++++++++++++++--
 drivers/net/wireless/ath/wil6210/txrx_edma.c |   2 +
 drivers/net/wireless/ath/wil6210/txrx_edma.h |   6 +
 drivers/net/wireless/ath/wil6210/wil6210.h   |   8 +-
 drivers/net/wireless/ath/wil6210/wmi.c       |   5 +-
 drivers/net/wireless/ath/wil6210/wmi.h       |  30 +++-
 include/net/cfg80211.h                       |  39 ++++-
 include/uapi/linux/nl80211.h                 |  19 +++
 net/wireless/chan.c                          | 152 +++++++++++++++++++-
 net/wireless/nl80211.c                       |  33 +++++
 net/wireless/util.c                          |  42 +++++-
 11 files changed, 521 insertions(+), 20 deletions(-)

-- 
1.9.1