[PATCH V2 0/9] qtnfmac: more info on current channel from device

[PATCH V2 0/9] qtnfmac: more info on current channel from device

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

This patchset has a goal to start using full current channel information
as reported by wireless device (specifically, center freq 1 and 2 and
operational BW).

It was part of bigger changeset when it was V1.

Changelist V1->V2:
PATCH 2:
  - do not rename "chandef" local variable with no purpose
  - report secondary center frequency in info messages
PATCH 3:
  - report secondary center frequency in info messages 

Igor Mitsyanko (9):
  qtnfmac: qlink: convert channel width from bitfiled to simple enum
  qtnfmac: make "Channel change" event report full channel info
  qtnfmac: retrieve current channel info from EP
  qtnfmac: do not cache channel info from "connect" command
  qtnfmac: let wifi card handle channel switch request to the same chan
  qtnfmac: pass VIF info to SendChannel command
  qtnfmac: do not cache CSA chandef info
  qtnfmac: remove unused mac::status field
  qtnfmac: do not report channel changes until wiphy is registered

 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c  | 69 +++++-----------------
 drivers/net/wireless/quantenna/qtnfmac/commands.c  | 52 +++++++++++++---
 drivers/net/wireless/quantenna/qtnfmac/commands.h  |  3 +-
 drivers/net/wireless/quantenna/qtnfmac/core.h      |  6 --
 drivers/net/wireless/quantenna/qtnfmac/event.c     | 34 ++++-------
 drivers/net/wireless/quantenna/qtnfmac/qlink.h     | 45 ++++++++++----
 .../net/wireless/quantenna/qtnfmac/qlink_util.c    | 68 ++++++++++++++++++---
 .../net/wireless/quantenna/qtnfmac/qlink_util.h    |  4 ++
 8 files changed, 175 insertions(+), 106 deletions(-)

-- 
2.9.5

[PATCH V2 1/9] qtnfmac: qlink: convert channel width from bitfiled to simple enum

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/qlink.h      | 16 ++++++++--------
 drivers/net/wireless/quantenna/qtnfmac/qlink_util.c | 16 ++++++++--------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink.h b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
index a8242f6..a69fd470 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
@@ -108,14 +108,14 @@ enum qlink_sta_flags {
 };
 
 enum qlink_channel_width {
-	QLINK_CHAN_WIDTH_5		= BIT(0),
-	QLINK_CHAN_WIDTH_10		= BIT(1),
-	QLINK_CHAN_WIDTH_20_NOHT	= BIT(2),
-	QLINK_CHAN_WIDTH_20		= BIT(3),
-	QLINK_CHAN_WIDTH_40		= BIT(4),
-	QLINK_CHAN_WIDTH_80		= BIT(5),
-	QLINK_CHAN_WIDTH_80P80		= BIT(6),
-	QLINK_CHAN_WIDTH_160		= BIT(7),
+	QLINK_CHAN_WIDTH_5 = 0,
+	QLINK_CHAN_WIDTH_10,
+	QLINK_CHAN_WIDTH_20_NOHT,
+	QLINK_CHAN_WIDTH_20,
+	QLINK_CHAN_WIDTH_40,
+	QLINK_CHAN_WIDTH_80,
+	QLINK_CHAN_WIDTH_80P80,
+	QLINK_CHAN_WIDTH_160,
 };
 
 /* QLINK Command messages related definitions
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
index cf024c9..369b77d 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
@@ -49,28 +49,28 @@ u8 qlink_chan_width_mask_to_nl(u16 qlink_mask)
 {
 	u8 result = 0;
 
-	if (qlink_mask & QLINK_CHAN_WIDTH_5)
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_5))
 		result |= BIT(NL80211_CHAN_WIDTH_5);
 
-	if (qlink_mask & QLINK_CHAN_WIDTH_10)
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_10))
 		result |= BIT(NL80211_CHAN_WIDTH_10);
 
-	if (qlink_mask & QLINK_CHAN_WIDTH_20_NOHT)
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_20_NOHT))
 		result |= BIT(NL80211_CHAN_WIDTH_20_NOHT);
 
-	if (qlink_mask & QLINK_CHAN_WIDTH_20)
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_20))
 		result |= BIT(NL80211_CHAN_WIDTH_20);
 
-	if (qlink_mask & QLINK_CHAN_WIDTH_40)
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_40))
 		result |= BIT(NL80211_CHAN_WIDTH_40);
 
-	if (qlink_mask & QLINK_CHAN_WIDTH_80)
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_80))
 		result |= BIT(NL80211_CHAN_WIDTH_80);
 
-	if (qlink_mask & QLINK_CHAN_WIDTH_80P80)
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_80P80))
 		result |= BIT(NL80211_CHAN_WIDTH_80P80);
 
-	if (qlink_mask & QLINK_CHAN_WIDTH_160)
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_160))
 		result |= BIT(NL80211_CHAN_WIDTH_160);
 
 	return result;
-- 
2.9.5

[PATCH V2 2/9] qtnfmac: make "Channel change" event report full channel info

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

Specifically, it has to report center frequency, secondary center
frequency (for 80+80) and BW.
Introduce channel definition structure to qlink and modify channel
change event processing function accordingly.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/event.c     | 29 ++++++------
 drivers/net/wireless/quantenna/qtnfmac/qlink.h     | 18 +++++++-
 .../net/wireless/quantenna/qtnfmac/qlink_util.c    | 52 ++++++++++++++++++++++
 .../net/wireless/quantenna/qtnfmac/qlink_util.h    |  4 ++
 4 files changed, 85 insertions(+), 18 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/event.c b/drivers/net/wireless/quantenna/qtnfmac/event.c
index 0fc2814..df58e83 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/event.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/event.c
@@ -25,6 +25,7 @@
 #include "trans.h"
 #include "util.h"
 #include "event.h"
+#include "qlink_util.h"
 
 static int
 qtnf_event_handle_sta_assoc(struct qtnf_wmac *mac, struct qtnf_vif *vif,
@@ -359,39 +360,35 @@ qtnf_event_handle_freq_change(struct qtnf_wmac *mac,
 {
 	struct wiphy *wiphy = priv_to_wiphy(mac);
 	struct cfg80211_chan_def chandef;
-	struct ieee80211_channel *chan;
 	struct qtnf_vif *vif;
-	int freq;
 	int i;
 
 	if (len < sizeof(*data)) {
-		pr_err("payload is too short\n");
+		pr_err("MAC%u: payload is too short\n", mac->macid);
 		return -EINVAL;
 	}
 
-	freq = le32_to_cpu(data->freq);
-	chan = ieee80211_get_channel(wiphy, freq);
-	if (!chan) {
-		pr_err("channel at %d MHz not found\n", freq);
+	qlink_chandef_q2cfg(wiphy, &data->chan, &chandef);
+
+	if (!cfg80211_chandef_valid(&chandef)) {
+		pr_err("MAC%u: bad channel f1=%u f2=%u bw=%u\n", mac->macid,
+		       chandef.center_freq1, chandef.center_freq2,
+		       chandef.width);
 		return -EINVAL;
 	}
 
-	pr_debug("MAC%d switch to new channel %u MHz\n", mac->macid, freq);
+	pr_debug("MAC%d: new channel ieee=%u freq1=%u freq2=%u bw=%u\n",
+		 mac->macid, chandef.chan->hw_value, chandef.center_freq1,
+		 chandef.center_freq2, chandef.width);
 
 	if (mac->status & QTNF_MAC_CSA_ACTIVE) {
 		mac->status &= ~QTNF_MAC_CSA_ACTIVE;
-		if (chan->hw_value != mac->csa_chandef.chan->hw_value)
+		if (chandef.chan->hw_value != mac->csa_chandef.chan->hw_value)
 			pr_warn("unexpected switch to %u during CSA to %u\n",
-				chan->hw_value,
+				chandef.chan->hw_value,
 				mac->csa_chandef.chan->hw_value);
 	}
 
-	/* FIXME: need to figure out proper nl80211_channel_type value */
-	cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_HT20);
-	/* fall-back to minimal safe chandef description */
-	if (!cfg80211_chandef_valid(&chandef))
-		cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_HT20);
-
 	memcpy(&mac->chandef, &chandef, sizeof(mac->chandef));
 
 	for (i = 0; i < QTNF_MAX_INTF; i++) {
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink.h b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
index a69fd470..5936854 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
@@ -118,6 +118,20 @@ enum qlink_channel_width {
 	QLINK_CHAN_WIDTH_160,
 };
 
+/**
+ * struct qlink_chandef - qlink channel definition
+ *
+ * @center_freq1: center frequency of first segment
+ * @center_freq2: center frequency of second segment (80+80 only)
+ * @width: channel width, one of @enum qlink_channel_width
+ */
+struct qlink_chandef {
+	__le16 center_freq1;
+	__le16 center_freq2;
+	u8 width;
+	u8 rsvd[3];
+} __packed;
+
 /* QLINK Command messages related definitions
  */
 
@@ -764,11 +778,11 @@ struct qlink_event_bss_leave {
 /**
  * struct qlink_event_freq_change - data for QLINK_EVENT_FREQ_CHANGE event
  *
- * @freq: new operating frequency in MHz
+ * @chan: new operating channel definition
  */
 struct qlink_event_freq_change {
 	struct qlink_event ehdr;
-	__le32 freq;
+	struct qlink_chandef chan;
 } __packed;
 
 enum qlink_rxmgmt_flags {
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
index 369b77d..3c1db5b 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c
@@ -75,3 +75,55 @@ u8 qlink_chan_width_mask_to_nl(u16 qlink_mask)
 
 	return result;
 }
+
+static enum nl80211_chan_width qlink_chanwidth_to_nl(u8 qlw)
+{
+	switch (qlw) {
+	case QLINK_CHAN_WIDTH_20_NOHT:
+		return NL80211_CHAN_WIDTH_20_NOHT;
+	case QLINK_CHAN_WIDTH_20:
+		return NL80211_CHAN_WIDTH_20;
+	case QLINK_CHAN_WIDTH_40:
+		return NL80211_CHAN_WIDTH_40;
+	case QLINK_CHAN_WIDTH_80:
+		return NL80211_CHAN_WIDTH_80;
+	case QLINK_CHAN_WIDTH_80P80:
+		return NL80211_CHAN_WIDTH_80P80;
+	case QLINK_CHAN_WIDTH_160:
+		return NL80211_CHAN_WIDTH_160;
+	case QLINK_CHAN_WIDTH_5:
+		return NL80211_CHAN_WIDTH_5;
+	case QLINK_CHAN_WIDTH_10:
+		return NL80211_CHAN_WIDTH_10;
+	default:
+		return -1;
+	}
+}
+
+void qlink_chandef_q2cfg(struct wiphy *wiphy,
+			 const struct qlink_chandef *qch,
+			 struct cfg80211_chan_def *chdef)
+{
+	chdef->center_freq1 = le16_to_cpu(qch->center_freq1);
+	chdef->center_freq2 = le16_to_cpu(qch->center_freq2);
+	chdef->width = qlink_chanwidth_to_nl(qch->width);
+
+	switch (chdef->width) {
+	case NL80211_CHAN_WIDTH_20_NOHT:
+	case NL80211_CHAN_WIDTH_20:
+	case NL80211_CHAN_WIDTH_5:
+	case NL80211_CHAN_WIDTH_10:
+		chdef->chan = ieee80211_get_channel(wiphy, chdef->center_freq1);
+		break;
+	case NL80211_CHAN_WIDTH_40:
+	case NL80211_CHAN_WIDTH_80:
+	case NL80211_CHAN_WIDTH_80P80:
+	case NL80211_CHAN_WIDTH_160:
+		chdef->chan = ieee80211_get_channel(wiphy,
+						    chdef->center_freq1 - 10);
+		break;
+	default:
+		chdef->chan = NULL;
+		break;
+	}
+}
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h
index de06c1e..5e49a8a 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h
@@ -19,6 +19,7 @@
 
 #include <linux/types.h>
 #include <linux/skbuff.h>
+#include <net/cfg80211.h>
 
 #include "qlink.h"
 
@@ -62,5 +63,8 @@ static inline void qtnf_cmd_skb_put_tlv_u16(struct sk_buff *skb,
 
 u16 qlink_iface_type_to_nl_mask(u16 qlink_type);
 u8 qlink_chan_width_mask_to_nl(u16 qlink_mask);
+void qlink_chandef_q2cfg(struct wiphy *wiphy,
+			 const struct qlink_chandef *qch,
+			 struct cfg80211_chan_def *chdef);
 
 #endif /* _QTN_FMAC_QLINK_UTIL_H_ */
-- 
2.9.5

[PATCH V2 3/9] qtnfmac: retrieve current channel info from EP

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

Do not try to cache current operational channel info in driver, this
is a potential source of synchronization issues + driver does not
really need that info.

Introduce GET_CHANNEL command and process it appropriately.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 35 +++++++++------------
 drivers/net/wireless/quantenna/qtnfmac/commands.c | 38 +++++++++++++++++++++++
 drivers/net/wireless/quantenna/qtnfmac/commands.h |  1 +
 drivers/net/wireless/quantenna/qtnfmac/qlink.h    | 11 +++++++
 4 files changed, 64 insertions(+), 21 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 856fa6e..0ef1285 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -793,37 +793,30 @@ qtnf_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
 	struct qtnf_wmac *mac = wiphy_priv(wiphy);
 	struct net_device *ndev = wdev->netdev;
 	struct qtnf_vif *vif;
+	int ret;
 
 	if (!ndev)
 		return -ENODEV;
 
 	vif = qtnf_netdev_get_priv(wdev->netdev);
 
-	switch (vif->wdev.iftype) {
-	case NL80211_IFTYPE_STATION:
-		if (vif->sta_state == QTNF_STA_DISCONNECTED) {
-			pr_warn("%s: STA disconnected\n", ndev->name);
-			return -ENODATA;
-		}
-		break;
-	case NL80211_IFTYPE_AP:
-		if (!(vif->bss_status & QTNF_STATE_AP_START)) {
-			pr_warn("%s: AP not started\n", ndev->name);
-			return -ENODATA;
-		}
-		break;
-	default:
-		pr_err("unsupported vif type (%d)\n", vif->wdev.iftype);
-		return -ENODATA;
+	ret = qtnf_cmd_get_channel(vif, chandef);
+	if (ret) {
+		pr_err("%s: failed to get channel: %d\n", ndev->name, ret);
+		goto out;
 	}
 
-	if (!cfg80211_chandef_valid(&mac->chandef)) {
-		pr_err("invalid channel settings on %s\n", ndev->name);
-		return -ENODATA;
+	if (!cfg80211_chandef_valid(chandef)) {
+		pr_err("%s: bad chan freq1=%u freq2=%u bw=%u\n", ndev->name,
+		       chandef->center_freq1, chandef->center_freq2,
+		       chandef->width);
+		ret = -ENODATA;
 	}
 
-	memcpy(chandef, &mac->chandef, sizeof(*chandef));
-	return 0;
+	memcpy(&mac->chandef, chandef, sizeof(mac->chandef));
+
+out:
+	return ret;
 }
 
 static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c b/drivers/net/wireless/quantenna/qtnfmac/commands.c
index 4206886..806b88b 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
@@ -2358,3 +2358,41 @@ int qtnf_cmd_send_chan_switch(struct qtnf_wmac *mac,
 	qtnf_bus_unlock(mac->bus);
 	return ret;
 }
+
+int qtnf_cmd_get_channel(struct qtnf_vif *vif, struct cfg80211_chan_def *chdef)
+{
+	struct qtnf_bus *bus = vif->mac->bus;
+	const struct qlink_resp_channel_get *resp;
+	struct sk_buff *cmd_skb;
+	struct sk_buff *resp_skb = NULL;
+	u16 res_code = QLINK_CMD_RESULT_OK;
+	int ret;
+
+	cmd_skb = qtnf_cmd_alloc_new_cmdskb(vif->mac->macid, vif->vifid,
+					    QLINK_CMD_CHAN_GET,
+					    sizeof(struct qlink_cmd));
+	if (unlikely(!cmd_skb))
+		return -ENOMEM;
+
+	qtnf_bus_lock(bus);
+
+	ret = qtnf_cmd_send_with_reply(bus, cmd_skb, &resp_skb, &res_code,
+				       sizeof(*resp), NULL);
+
+	qtnf_bus_unlock(bus);
+
+	if (unlikely(ret))
+		goto out;
+
+	if (unlikely(res_code != QLINK_CMD_RESULT_OK)) {
+		ret = -ENODATA;
+		goto out;
+	}
+
+	resp = (const struct qlink_resp_channel_get *)resp_skb->data;
+	qlink_chandef_q2cfg(priv_to_wiphy(vif->mac), &resp->chan, chdef);
+
+out:
+	consume_skb(resp_skb);
+	return ret;
+}
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.h b/drivers/net/wireless/quantenna/qtnfmac/commands.h
index 783b203..e1bcb83 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.h
@@ -75,5 +75,6 @@ int qtnf_cmd_get_chan_stats(struct qtnf_wmac *mac, u16 channel,
 			    struct qtnf_chan_stats *stats);
 int qtnf_cmd_send_chan_switch(struct qtnf_wmac *mac,
 			      struct cfg80211_csa_settings *params);
+int qtnf_cmd_get_channel(struct qtnf_vif *vif, struct cfg80211_chan_def *chdef);
 
 #endif /* QLINK_COMMANDS_H_ */
diff --git a/drivers/net/wireless/quantenna/qtnfmac/qlink.h b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
index 5936854..fb88f3e 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/qlink.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/qlink.h
@@ -169,6 +169,7 @@ enum qlink_cmd_type {
 	QLINK_CMD_REG_NOTIFY		= 0x0019,
 	QLINK_CMD_CHANS_INFO_GET	= 0x001A,
 	QLINK_CMD_CHAN_SWITCH		= 0x001B,
+	QLINK_CMD_CHAN_GET		= 0x001C,
 	QLINK_CMD_CONFIG_AP		= 0x0020,
 	QLINK_CMD_START_AP		= 0x0021,
 	QLINK_CMD_STOP_AP		= 0x0022,
@@ -694,6 +695,16 @@ struct qlink_resp_get_chan_stats {
 	u8 info[0];
 } __packed;
 
+/**
+ * struct qlink_resp_channel_get - response for QLINK_CMD_CHAN_GET command
+ *
+ * @chan: definition of current operating channel.
+ */
+struct qlink_resp_channel_get {
+	struct qlink_resp rhdr;
+	struct qlink_chandef chan;
+} __packed;
+
 /* QLINK Events messages related definitions
  */
 
-- 
2.9.5

[PATCH V2 4/9] qtnfmac: do not cache channel info from "connect" command

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

This makes no sense because real operational channel is choosen based
on AP operation, not on what STA is configured to.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 15 +--------------
 drivers/net/wireless/quantenna/qtnfmac/commands.c |  6 ++++--
 2 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 0ef1285..17b323e 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -613,8 +613,6 @@ qtnf_connect(struct wiphy *wiphy, struct net_device *dev,
 	     struct cfg80211_connect_params *sme)
 {
 	struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
-	struct qtnf_wmac *mac = wiphy_priv(wiphy);
-	struct cfg80211_chan_def chandef;
 	struct qtnf_bss_config *bss_cfg;
 	int ret;
 
@@ -627,18 +625,6 @@ qtnf_connect(struct wiphy *wiphy, struct net_device *dev,
 	bss_cfg = &vif->bss_cfg;
 	memset(bss_cfg, 0, sizeof(*bss_cfg));
 
-	if (sme->channel) {
-		/* FIXME: need to set proper nl80211_channel_type value */
-		cfg80211_chandef_create(&chandef, sme->channel,
-					NL80211_CHAN_HT20);
-		/* fall-back to minimal safe chandef description */
-		if (!cfg80211_chandef_valid(&chandef))
-			cfg80211_chandef_create(&chandef, sme->channel,
-						NL80211_CHAN_HT20);
-
-		memcpy(&mac->chandef, &chandef, sizeof(mac->chandef));
-	}
-
 	bss_cfg->ssid_len = sme->ssid_len;
 	memcpy(&bss_cfg->ssid, sme->ssid, bss_cfg->ssid_len);
 	bss_cfg->auth_type = sme->auth_type;
@@ -663,6 +649,7 @@ qtnf_connect(struct wiphy *wiphy, struct net_device *dev,
 		bss_cfg->connect_flags |= QLINK_STA_CONNECT_USE_RRM;
 
 	memcpy(&bss_cfg->crypto, &sme->crypto, sizeof(bss_cfg->crypto));
+
 	if (sme->bssid)
 		ether_addr_copy(bss_cfg->bssid, sme->bssid);
 	else
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c b/drivers/net/wireless/quantenna/qtnfmac/commands.c
index 806b88b..c55bae1 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
@@ -2055,8 +2055,10 @@ int qtnf_cmd_send_connect(struct qtnf_vif *vif,
 
 	ether_addr_copy(cmd->bssid, bss_cfg->bssid);
 
-	if (vif->mac->chandef.chan)
-		cmd->channel = cpu_to_le16(vif->mac->chandef.chan->hw_value);
+	if (sme->channel)
+		cmd->channel = cpu_to_le16(sme->channel->hw_value);
+	else
+		cmd->channel = 0;
 
 	cmd->bg_scan_period = cpu_to_le16(bss_cfg->bg_scan_period);
 
-- 
2.9.5

[PATCH V2 5/9] qtnfmac: let wifi card handle channel switch request to the same chan

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 17b323e..4590f30 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -846,11 +846,6 @@ static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 		return -EINVAL;
 	}
 
-	if (cfg80211_chandef_identical(&params->chandef, &mac->chandef)) {
-		pr_err("%s: switch request to the same channel\n", dev->name);
-		return -EALREADY;
-	}
-
 	ret = qtnf_cmd_send_chan_switch(mac, params);
 	if (ret)
 		pr_warn("%s: failed to switch to channel (%u)\n",
-- 
2.9.5

[PATCH V2 6/9] qtnfmac: pass VIF info to SendChannel command

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 2 +-
 drivers/net/wireless/quantenna/qtnfmac/commands.c | 5 +++--
 drivers/net/wireless/quantenna/qtnfmac/commands.h | 2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 4590f30..30f8be5 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -846,7 +846,7 @@ static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 		return -EINVAL;
 	}
 
-	ret = qtnf_cmd_send_chan_switch(mac, params);
+	ret = qtnf_cmd_send_chan_switch(vif, params);
 	if (ret)
 		pr_warn("%s: failed to switch to channel (%u)\n",
 			dev->name, params->chandef.chan->hw_value);
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c b/drivers/net/wireless/quantenna/qtnfmac/commands.c
index c55bae1..0138dad 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
@@ -2306,15 +2306,16 @@ int qtnf_cmd_get_chan_stats(struct qtnf_wmac *mac, u16 channel,
 	return ret;
 }
 
-int qtnf_cmd_send_chan_switch(struct qtnf_wmac *mac,
+int qtnf_cmd_send_chan_switch(struct qtnf_vif *vif,
 			      struct cfg80211_csa_settings *params)
 {
+	struct qtnf_wmac *mac = vif->mac;
 	struct qlink_cmd_chan_switch *cmd;
 	struct sk_buff *cmd_skb;
 	u16 res_code = QLINK_CMD_RESULT_OK;
 	int ret;
 
-	cmd_skb = qtnf_cmd_alloc_new_cmdskb(mac->macid, 0x0,
+	cmd_skb = qtnf_cmd_alloc_new_cmdskb(mac->macid, vif->vifid,
 					    QLINK_CMD_CHAN_SWITCH,
 					    sizeof(*cmd));
 
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.h b/drivers/net/wireless/quantenna/qtnfmac/commands.h
index e1bcb83..8a5a82c 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.h
@@ -73,7 +73,7 @@ int qtnf_cmd_send_updown_intf(struct qtnf_vif *vif,
 int qtnf_cmd_reg_notify(struct qtnf_bus *bus, struct regulatory_request *req);
 int qtnf_cmd_get_chan_stats(struct qtnf_wmac *mac, u16 channel,
 			    struct qtnf_chan_stats *stats);
-int qtnf_cmd_send_chan_switch(struct qtnf_wmac *mac,
+int qtnf_cmd_send_chan_switch(struct qtnf_vif *vif,
 			      struct cfg80211_csa_settings *params);
 int qtnf_cmd_get_channel(struct qtnf_vif *vif, struct cfg80211_chan_def *chdef);
 
-- 
2.9.5

[PATCH V2 7/9] qtnfmac: do not cache CSA chandef info

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

It is never used for anything useful, and all logic is handled by
either WiFi card or higher layers.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/cfg80211.c | 12 ------------
 drivers/net/wireless/quantenna/qtnfmac/commands.c |  2 --
 drivers/net/wireless/quantenna/qtnfmac/core.h     |  1 -
 drivers/net/wireless/quantenna/qtnfmac/event.c    |  8 +-------
 4 files changed, 1 insertion(+), 22 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index 30f8be5..262e8cf 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -809,7 +809,6 @@ qtnf_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
 static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 			       struct cfg80211_csa_settings *params)
 {
-	struct qtnf_wmac *mac = wiphy_priv(wiphy);
 	struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 	int ret;
 
@@ -830,17 +829,6 @@ static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 		return -EOPNOTSUPP;
 	}
 
-	if (vif->vifid != 0) {
-		if (!(mac->status & QTNF_MAC_CSA_ACTIVE))
-			return -EOPNOTSUPP;
-
-		if (!cfg80211_chandef_identical(&params->chandef,
-						&mac->csa_chandef))
-			return -EINVAL;
-
-		return 0;
-	}
-
 	if (!cfg80211_chandef_valid(&params->chandef)) {
 		pr_err("%s: invalid channel\n", dev->name);
 		return -EINVAL;
diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c b/drivers/net/wireless/quantenna/qtnfmac/commands.c
index 0138dad..42f7e1d 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
@@ -2337,8 +2337,6 @@ int qtnf_cmd_send_chan_switch(struct qtnf_vif *vif,
 
 	switch (res_code) {
 	case QLINK_CMD_RESULT_OK:
-		memcpy(&mac->csa_chandef, &params->chandef,
-		       sizeof(mac->csa_chandef));
 		mac->status |= QTNF_MAC_CSA_ACTIVE;
 		ret = 0;
 		break;
diff --git a/drivers/net/wireless/quantenna/qtnfmac/core.h b/drivers/net/wireless/quantenna/qtnfmac/core.h
index 066fcd1..521ce09 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/core.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/core.h
@@ -147,7 +147,6 @@ struct qtnf_wmac {
 	struct qtnf_vif iflist[QTNF_MAX_INTF];
 	struct cfg80211_scan_request *scan_req;
 	struct cfg80211_chan_def chandef;
-	struct cfg80211_chan_def csa_chandef;
 	struct mutex mac_lock;	/* lock during wmac speicific ops */
 	struct timer_list scan_timeout;
 };
diff --git a/drivers/net/wireless/quantenna/qtnfmac/event.c b/drivers/net/wireless/quantenna/qtnfmac/event.c
index df58e83..77563b0 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/event.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/event.c
@@ -381,13 +381,7 @@ qtnf_event_handle_freq_change(struct qtnf_wmac *mac,
 		 mac->macid, chandef.chan->hw_value, chandef.center_freq1,
 		 chandef.center_freq2, chandef.width);
 
-	if (mac->status & QTNF_MAC_CSA_ACTIVE) {
-		mac->status &= ~QTNF_MAC_CSA_ACTIVE;
-		if (chandef.chan->hw_value != mac->csa_chandef.chan->hw_value)
-			pr_warn("unexpected switch to %u during CSA to %u\n",
-				chandef.chan->hw_value,
-				mac->csa_chandef.chan->hw_value);
-	}
+	mac->status &= ~QTNF_MAC_CSA_ACTIVE;
 
 	memcpy(&mac->chandef, &chandef, sizeof(mac->chandef));
 
-- 
2.9.5

[PATCH V2 8/9] qtnfmac: remove unused mac::status field

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

It is no longer used.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/commands.c | 1 -
 drivers/net/wireless/quantenna/qtnfmac/core.h     | 5 -----
 drivers/net/wireless/quantenna/qtnfmac/event.c    | 2 --
 3 files changed, 8 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c b/drivers/net/wireless/quantenna/qtnfmac/commands.c
index 42f7e1d..8f95f98 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/commands.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c
@@ -2337,7 +2337,6 @@ int qtnf_cmd_send_chan_switch(struct qtnf_vif *vif,
 
 	switch (res_code) {
 	case QLINK_CMD_RESULT_OK:
-		mac->status |= QTNF_MAC_CSA_ACTIVE;
 		ret = 0;
 		break;
 	case QLINK_CMD_RESULT_ENOTFOUND:
diff --git a/drivers/net/wireless/quantenna/qtnfmac/core.h b/drivers/net/wireless/quantenna/qtnfmac/core.h
index 521ce09..2cd0150 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/core.h
+++ b/drivers/net/wireless/quantenna/qtnfmac/core.h
@@ -89,10 +89,6 @@ enum qtnf_sta_state {
 	QTNF_STA_CONNECTED
 };
 
-enum qtnf_mac_status {
-	QTNF_MAC_CSA_ACTIVE	= BIT(0)
-};
-
 struct qtnf_vif {
 	struct wireless_dev wdev;
 	u8 vifid;
@@ -141,7 +137,6 @@ struct qtnf_wmac {
 	u8 macid;
 	u8 wiphy_registered;
 	u8 macaddr[ETH_ALEN];
-	u32 status;
 	struct qtnf_bus *bus;
 	struct qtnf_mac_info macinfo;
 	struct qtnf_vif iflist[QTNF_MAX_INTF];
diff --git a/drivers/net/wireless/quantenna/qtnfmac/event.c b/drivers/net/wireless/quantenna/qtnfmac/event.c
index 77563b0..b1acc24 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/event.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/event.c
@@ -381,8 +381,6 @@ qtnf_event_handle_freq_change(struct qtnf_wmac *mac,
 		 mac->macid, chandef.chan->hw_value, chandef.center_freq1,
 		 chandef.center_freq2, chandef.width);
 
-	mac->status &= ~QTNF_MAC_CSA_ACTIVE;
-
 	memcpy(&mac->chandef, &chandef, sizeof(mac->chandef));
 
 	for (i = 0; i < QTNF_MAX_INTF; i++) {
-- 
2.9.5

[PATCH V2 9/9] qtnfmac: do not report channel changes until wiphy is registered

[igor.mitsyanko.os]

From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/event.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/event.c b/drivers/net/wireless/quantenna/qtnfmac/event.c
index b1acc24..7481d5b 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/event.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/event.c
@@ -368,6 +368,9 @@ qtnf_event_handle_freq_change(struct qtnf_wmac *mac,
 		return -EINVAL;
 	}
 
+	if (!wiphy->registered)
+		return 0;
+
 	qlink_chandef_q2cfg(wiphy, &data->chan, &chandef);
 
 	if (!cfg80211_chandef_valid(&chandef)) {
-- 
2.9.5

Re: [PATCH V2 1/9] qtnfmac: qlink: convert channel width from bitfiled to simple enum

[Sergey Matyukevich]

For the whole patch set:
Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>

Re: [V2, 1/9] qtnfmac: qlink: convert channel width from bitfiled to simple enum

[Kalle Valo]

Igor Mitsyanko <igor.mitsyanko.os@quantenna.com> wrote:

> From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
> 
> Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
> Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>

No empty commit logs, please. After the first patch I was about to write
one myself but after seeing multiple of them I'm not going to do that.

9 patches set to Changes Requested.

9935431 [V2,1/9] qtnfmac: qlink: convert channel width from bitfiled to simple enum
9935437 [V2,2/9] qtnfmac: make "Channel change" event report full channel info
9935443 [V2,3/9] qtnfmac: retrieve current channel info from EP
9935445 [V2,4/9] qtnfmac: do not cache channel info from "connect" command
9935429 [V2,5/9] qtnfmac: let wifi card handle channel switch request to the same chan
9935441 [V2,6/9] qtnfmac: pass VIF info to SendChannel command
9935433 [V2,7/9] qtnfmac: do not cache CSA chandef info
9935439 [V2,8/9] qtnfmac: remove unused mac::status field
9935435 [V2,9/9] qtnfmac: do not report channel changes until wiphy is registered

-- 
https://patchwork.kernel.org/patch/9935431/

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

Re: [V2, 1/9] qtnfmac: qlink: convert channel width from bitfiled to simple enum

[Kalle Valo]

Kalle Valo <kvalo@codeaurora.org> writes:

> Igor Mitsyanko <igor.mitsyanko.os@quantenna.com> wrote:
>
>> From: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
>> 
>> Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
>> Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
>
> No empty commit logs, please. After the first patch I was about to write
> one myself but after seeing multiple of them I'm not going to do that.
>
> 9 patches set to Changes Requested.

BTW, I got a mail undelivered message. Not sure why smtp.codeaurora.org
could not find the host but reporting it here just in case:

<avinashp@quantenna.com>: unable to look up host
    quantenna-com.mail.protection.outlook.com: Name or service not known

<igor.mitsyanko.os@quantenna.com>: unable to look up host
    quantenna-com.mail.protection.outlook.com: Name or service not known

<sergey.matyukevich.os@quantenna.com>: unable to look up host
    quantenna-com.mail.protection.outlook.com: Name or service not known

-- 
Kalle Valo

Re: [V2, 1/9] qtnfmac: qlink: convert channel width from bitfiled to simple enum

[Sergey Matyukevich]

Hello Kalle,

> BTW, I got a mail undelivered message. Not sure why smtp.codeaurora.org
> could not find the host but reporting it here just in case:
> 
> <avinashp@quantenna.com>: unable to look up host
>     quantenna-com.mail.protection.outlook.com: Name or service not known
> 
> <igor.mitsyanko.os@quantenna.com>: unable to look up host
>     quantenna-com.mail.protection.outlook.com: Name or service not known
> 
> <sergey.matyukevich.os@quantenna.com>: unable to look up host
>     quantenna-com.mail.protection.outlook.com: Name or service not known

Thanks for letting us know. I see those emails im my box, but probably
because of mailing list subscription. I will check with colleagues
if they see your replies as well.

Regards,
Sergey