[PATCH v3 00/22] add support for S1G association

[PATCH v3 00/22] add support for S1G association

[Thomas Pedersen]

This is the initial S1G patchset which adds support for:

- defining the S1G 900MHz bands in a custom regulatory database
- setting and receiving S1G beacons (sending short beacons will be
  supported in a future patch)
- configuring S1G capabilities in Association Request (setting
  capabilities along with NL80211_CMD_SET_STATION will be added later).
- scanning on S1G bands
- handling S1G Association Response format
- correctly encoding Listen Interval for S1G
- associating in mac80211
- testing S1G in mac80211_hwsim

Rate control is still TBD, this patchset simply lops off the rate
control hooks for S1G so eg. missing sband->bitrates and S1G Basic Rate
set can't do too much damage.

Note the mac80211_hwsim S1G support introduces a regression in a few
hostap hwsim tests. This is because when processing the reported bands,
hostap assumes freq < 4000 is 11b, and the actual 11b/g band is
overwritten by the S1G band info. Though it does count as a userspace
regression, I'm not sure there is much to do about it besides apply a
small patch to hostapd which treats freq < 2000 as an unknown band.

After the hostap workaround
(https://lists.infradead.org/pipermail/hostap/2020-August/038748.html),
these patches continue to pass the hwsim tests as well as HEAD.

Thomas Pedersen (22):
  ieee80211: redefine S1G bits with GENMASK
  nl80211: advertise supported channel width in S1G
  cfg80211: regulatory: handle S1G channels
  nl80211: correctly validate S1G beacon head
  nl80211: support setting S1G channels
  {cfg,mac}80211: get correct default channel width for S1G
  mac80211: s1g: choose scanning width based on frequency
  nl80211: support S1G capabilities
  mac80211: support S1G STA capabilities
  cfg80211: convert S1G beacon to scan results
  cfg80211: parse S1G Operation element for BSS channel
  mac80211: convert S1G beacon to scan results
  cfg80211: handle Association Response from S1G STA
  mac80211: encode listen interval for S1G
  mac80211: don't calculate duration for S1G
  mac80211: handle S1G low rates
  mac80211: avoid rate init for S1G band
  mac80211: receive and process S1G beacons
  mac80211: support S1G association
  nl80211: include frequency offset in survey info
  mac80211_hwsim: fix TSF timestamp write to S1G beacon
  mac80211_hwsim: indicate support for S1G

 drivers/net/wireless/mac80211_hwsim.c |  93 +++++++++--
 include/linux/ieee80211.h             | 223 +++++++++++++++++---------
 include/net/cfg80211.h                |  28 ++++
 include/net/mac80211.h                |   3 +
 include/uapi/linux/nl80211.h          |  26 +++
 net/mac80211/cfg.c                    |   2 +
 net/mac80211/chan.c                   |   9 +-
 net/mac80211/ibss.c                   |   3 +-
 net/mac80211/ieee80211_i.h            |  20 +++
 net/mac80211/iface.c                  |   5 +
 net/mac80211/mlme.c                   | 184 +++++++++++++++++----
 net/mac80211/rate.c                   |  39 ++++-
 net/mac80211/rx.c                     |  87 +++++-----
 net/mac80211/scan.c                   |  37 ++++-
 net/mac80211/tx.c                     |   4 +
 net/mac80211/util.c                   | 200 +++++++++++++++++++++++
 net/wireless/chan.c                   | 140 ++++++++++------
 net/wireless/mlme.c                   |  20 +++
 net/wireless/nl80211.c                |  52 +++++-
 net/wireless/reg.c                    |  70 ++++++--
 net/wireless/scan.c                   |  80 +++++++--
 net/wireless/util.c                   |  32 ++++
 22 files changed, 1091 insertions(+), 266 deletions(-)

-- 
2.20.1

[PATCH v3 01/22] ieee80211: redefine S1G bits with GENMASK

[Thomas Pedersen]

The S1G capability fields were defined by ORing BITS()
together, and expecting a custom macro to use the _SHIFT
definitions. Use the Linux kernel GENMASK for the
definitions now, and FIELD_{GET,PREP} to access the fields
in the future.

Take the chance to rename eg. S1G_CAPAB_B0 to the more
compact S1G_CAP0.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/linux/ieee80211.h | 156 +++++++++++++++++++-------------------
 1 file changed, 78 insertions(+), 78 deletions(-)

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index c47f43e65a2f..53fba39d4ba6 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -2330,84 +2330,84 @@ ieee80211_he_spr_size(const u8 *he_spr_ie)
 }
 
 /* S1G Capabilities Information field */
-#define S1G_CAPAB_B0_S1G_LONG BIT(0)
-#define S1G_CAPAB_B0_SGI_1MHZ BIT(1)
-#define S1G_CAPAB_B0_SGI_2MHZ BIT(2)
-#define S1G_CAPAB_B0_SGI_4MHZ BIT(3)
-#define S1G_CAPAB_B0_SGI_8MHZ BIT(4)
-#define S1G_CAPAB_B0_SGI_16MHZ BIT(5)
-#define S1G_CAPAB_B0_SUPP_CH_WIDTH_MASK (BIT(6) | BIT(7))
-#define S1G_CAPAB_B0_SUPP_CH_WIDTH_SHIFT 6
-
-#define S1G_CAPAB_B1_RX_LDPC BIT(0)
-#define S1G_CAPAB_B1_TX_STBC BIT(1)
-#define S1G_CAPAB_B1_RX_STBC BIT(2)
-#define S1G_CAPAB_B1_SU_BFER BIT(3)
-#define S1G_CAPAB_B1_SU_BFEE BIT(4)
-#define S1G_CAPAB_B1_BFEE_STS_MASK (BIT(5) | BIT(6) | BIT(7))
-#define S1G_CAPAB_B1_BFEE_STS_SHIFT 5
-
-#define S1G_CAPAB_B2_SOUNDING_DIMENSIONS_MASK (BIT(0) | BIT(1) | BIT(2))
-#define S1G_CAPAB_B2_SOUNDING_DIMENSIONS_SHIFT 0
-#define S1G_CAPAB_B2_MU_BFER BIT(3)
-#define S1G_CAPAB_B2_MU_BFEE BIT(4)
-#define S1G_CAPAB_B2_PLUS_HTC_VHT BIT(5)
-#define S1G_CAPAB_B2_TRAVELING_PILOT_MASK (BIT(6) | BIT(7))
-#define S1G_CAPAB_B2_TRAVELING_PILOT_SHIFT 6
-
-#define S1G_CAPAB_B3_RD_RESPONDER BIT(0)
-#define S1G_CAPAB_B3_HT_DELAYED_BA BIT(1)
-#define S1G_CAPAB_B3_MAX_MPDU_LEN BIT(2)
-#define S1G_CAPAB_B3_MAX_AMPDU_LEN_EXP_MASK (BIT(3) | BIT(4))
-#define S1G_CAPAB_B3_MAX_AMPDU_LEN_EXP_SHIFT 3
-#define S1G_CAPAB_B3_MIN_MPDU_START_MASK (BIT(5) | BIT(6) | BIT(7))
-#define S1G_CAPAB_B3_MIN_MPDU_START_SHIFT 5
-
-#define S1G_CAPAB_B4_UPLINK_SYNC BIT(0)
-#define S1G_CAPAB_B4_DYNAMIC_AID BIT(1)
-#define S1G_CAPAB_B4_BAT BIT(2)
-#define S1G_CAPAB_B4_TIME_ADE BIT(3)
-#define S1G_CAPAB_B4_NON_TIM BIT(4)
-#define S1G_CAPAB_B4_GROUP_AID BIT(5)
-#define S1G_CAPAB_B4_STA_TYPE_MASK (BIT(6) | BIT(7))
-#define S1G_CAPAB_B4_STA_TYPE_SHIFT 6
-
-#define S1G_CAPAB_B5_CENT_AUTH_CONTROL BIT(0)
-#define S1G_CAPAB_B5_DIST_AUTH_CONTROL BIT(1)
-#define S1G_CAPAB_B5_AMSDU BIT(2)
-#define S1G_CAPAB_B5_AMPDU BIT(3)
-#define S1G_CAPAB_B5_ASYMMETRIC_BA BIT(4)
-#define S1G_CAPAB_B5_FLOW_CONTROL BIT(5)
-#define S1G_CAPAB_B5_SECTORIZED_BEAM_MASK (BIT(6) | BIT(7))
-#define S1G_CAPAB_B5_SECTORIZED_BEAM_SHIFT 6
-
-#define S1G_CAPAB_B6_OBSS_MITIGATION BIT(0)
-#define S1G_CAPAB_B6_FRAGMENT_BA BIT(1)
-#define S1G_CAPAB_B6_NDP_PS_POLL BIT(2)
-#define S1G_CAPAB_B6_RAW_OPERATION BIT(3)
-#define S1G_CAPAB_B6_PAGE_SLICING BIT(4)
-#define S1G_CAPAB_B6_TXOP_SHARING_IMP_ACK BIT(5)
-#define S1G_CAPAB_B6_VHT_LINK_ADAPT_MASK (BIT(6) | BIT(7))
-#define S1G_CAPAB_B6_VHT_LINK_ADAPT_SHIFT 6
-
-#define S1G_CAPAB_B7_TACK_AS_PS_POLL BIT(0)
-#define S1G_CAPAB_B7_DUP_1MHZ BIT(1)
-#define S1G_CAPAB_B7_MCS_NEGOTIATION BIT(2)
-#define S1G_CAPAB_B7_1MHZ_CTL_RESPONSE_PREAMBLE BIT(3)
-#define S1G_CAPAB_B7_NDP_BFING_REPORT_POLL BIT(4)
-#define S1G_CAPAB_B7_UNSOLICITED_DYN_AID BIT(5)
-#define S1G_CAPAB_B7_SECTOR_TRAINING_OPERATION BIT(6)
-#define S1G_CAPAB_B7_TEMP_PS_MODE_SWITCH BIT(7)
-
-#define S1G_CAPAB_B8_TWT_GROUPING BIT(0)
-#define S1G_CAPAB_B8_BDT BIT(1)
-#define S1G_CAPAB_B8_COLOR_MASK (BIT(2) | BIT(3) | BIT(4))
-#define S1G_CAPAB_B8_COLOR_SHIFT 2
-#define S1G_CAPAB_B8_TWT_REQUEST BIT(5)
-#define S1G_CAPAB_B8_TWT_RESPOND BIT(6)
-#define S1G_CAPAB_B8_PV1_FRAME BIT(7)
-
-#define S1G_CAPAB_B9_LINK_ADAPT_PER_CONTROL_RESPONSE BIT(0)
+#define S1G_CAP0_S1G_LONG	BIT(0)
+#define S1G_CAP0_SGI_1MHZ	BIT(1)
+#define S1G_CAP0_SGI_2MHZ	BIT(2)
+#define S1G_CAP0_SGI_4MHZ	BIT(3)
+#define S1G_CAP0_SGI_8MHZ	BIT(4)
+#define S1G_CAP0_SGI_16MHZ	BIT(5)
+#define S1G_CAP0_SUPP_CH_WIDTH	GENMASK(7, 6)
+
+#define S1G_SUPP_CH_WIDTH_2	0
+#define S1G_SUPP_CH_WIDTH_4	1
+#define S1G_SUPP_CH_WIDTH_8	2
+#define S1G_SUPP_CH_WIDTH_16	3
+#define S1G_SUPP_CH_WIDTH_MAX(cap) ((1 << FIELD_GET(S1G_CAP0_SUPP_CH_WIDTH, \
+						    cap[0])) << 1)
+
+#define S1G_CAP1_RX_LDPC	BIT(0)
+#define S1G_CAP1_TX_STBC	BIT(1)
+#define S1G_CAP1_RX_STBC	BIT(2)
+#define S1G_CAP1_SU_BFER	BIT(3)
+#define S1G_CAP1_SU_BFEE	BIT(4)
+#define S1G_CAP1_BFEE_STS	GENMASK(7, 5)
+
+#define S1G_CAP2_SOUNDING_DIMENSIONS	GENMASK(2, 0)
+#define S1G_CAP2_MU_BFER		BIT(3)
+#define S1G_CAP2_MU_BFEE		BIT(4)
+#define S1G_CAP2_PLUS_HTC_VHT		BIT(5)
+#define S1G_CAP2_TRAVELING_PILOT	GENMASK(7, 6)
+
+#define S1G_CAP3_RD_RESPONDER		BIT(0)
+#define S1G_CAP3_HT_DELAYED_BA		BIT(1)
+#define S1G_CAP3_MAX_MPDU_LEN		BIT(2)
+#define S1G_CAP3_MAX_AMPDU_LEN_EXP	GENMASK(4, 3)
+#define S1G_CAP3_MIN_MPDU_START		GENMASK(7, 5)
+
+#define S1G_CAP4_UPLINK_SYNC	BIT(0)
+#define S1G_CAP4_DYNAMIC_AID	BIT(1)
+#define S1G_CAP4_BAT		BIT(2)
+#define S1G_CAP4_TIME_ADE	BIT(3)
+#define S1G_CAP4_NON_TIM	BIT(4)
+#define S1G_CAP4_GROUP_AID	BIT(5)
+#define S1G_CAP4_STA_TYPE	GENMASK(7, 6)
+
+#define S1G_CAP5_CENT_AUTH_CONTROL	BIT(0)
+#define S1G_CAP5_DIST_AUTH_CONTROL	BIT(1)
+#define S1G_CAP5_AMSDU			BIT(2)
+#define S1G_CAP5_AMPDU			BIT(3)
+#define S1G_CAP5_ASYMMETRIC_BA		BIT(4)
+#define S1G_CAP5_FLOW_CONTROL		BIT(5)
+#define S1G_CAP5_SECTORIZED_BEAM	GENMASK(7, 6)
+
+#define S1G_CAP6_OBSS_MITIGATION	BIT(0)
+#define S1G_CAP6_FRAGMENT_BA		BIT(1)
+#define S1G_CAP6_NDP_PS_POLL		BIT(2)
+#define S1G_CAP6_RAW_OPERATION		BIT(3)
+#define S1G_CAP6_PAGE_SLICING		BIT(4)
+#define S1G_CAP6_TXOP_SHARING_IMP_ACK	BIT(5)
+#define S1G_CAP6_VHT_LINK_ADAPT		GENMASK(7, 6)
+
+#define S1G_CAP7_TACK_AS_PS_POLL		BIT(0)
+#define S1G_CAP7_DUP_1MHZ			BIT(1)
+#define S1G_CAP7_MCS_NEGOTIATION		BIT(2)
+#define S1G_CAP7_1MHZ_CTL_RESPONSE_PREAMBLE	BIT(3)
+#define S1G_CAP7_NDP_BFING_REPORT_POLL		BIT(4)
+#define S1G_CAP7_UNSOLICITED_DYN_AID		BIT(5)
+#define S1G_CAP7_SECTOR_TRAINING_OPERATION	BIT(6)
+#define S1G_CAP7_TEMP_PS_MODE_SWITCH		BIT(7)
+
+#define S1G_CAP8_TWT_GROUPING	BIT(0)
+#define S1G_CAP8_BDT		BIT(1)
+#define S1G_CAP8_COLOR		GENMASK(4, 2)
+#define S1G_CAP8_TWT_REQUEST	BIT(5)
+#define S1G_CAP8_TWT_RESPOND	BIT(6)
+#define S1G_CAP8_PV1_FRAME	BIT(7)
+
+#define S1G_CAP9_LINK_ADAPT_PER_CONTROL_RESPONSE BIT(0)
+
+#define S1G_OPER_CH_WIDTH_PRIMARY_1MHZ	BIT(0)
+#define S1G_OPER_CH_WIDTH_OPER		GENMASK(4, 1)
 
 /* Authentication algorithms */
 #define WLAN_AUTH_OPEN 0
-- 
2.20.1

[PATCH v3 02/22] nl80211: advertise supported channel width in S1G

[Thomas Pedersen]

S1G supports 5 channel widths: 1, 2, 4, 8, and 16. One
channel width is allowed per frequency in each operating
class, so it makes more sense to advertise the specific
channel width allowed.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/net/cfg80211.h       | 15 +++++++++++++++
 include/uapi/linux/nl80211.h | 15 +++++++++++++++
 net/wireless/nl80211.c       | 15 +++++++++++++++
 3 files changed, 45 insertions(+)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index c9bce9bba511..e4d4fbcb2edc 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -96,6 +96,16 @@ struct wiphy;
  * @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted
  *	on this channel.
  * @IEEE80211_CHAN_NO_HE: HE operation is not permitted on this channel.
+ * @IEEE80211_CHAN_1MHZ: 1 MHz bandwidth is permitted
+ *	on this channel.
+ * @IEEE80211_CHAN_2MHZ: 2 MHz bandwidth is permitted
+ *	on this channel.
+ * @IEEE80211_CHAN_4MHZ: 4 MHz bandwidth is permitted
+ *	on this channel.
+ * @IEEE80211_CHAN_8MHZ: 8 MHz bandwidth is permitted
+ *	on this channel.
+ * @IEEE80211_CHAN_16MHZ: 16 MHz bandwidth is permitted
+ *	on this channel.
  *
  */
 enum ieee80211_channel_flags {
@@ -113,6 +123,11 @@ enum ieee80211_channel_flags {
 	IEEE80211_CHAN_NO_20MHZ		= 1<<11,
 	IEEE80211_CHAN_NO_10MHZ		= 1<<12,
 	IEEE80211_CHAN_NO_HE		= 1<<13,
+	IEEE80211_CHAN_1MHZ		= 1<<14,
+	IEEE80211_CHAN_2MHZ		= 1<<15,
+	IEEE80211_CHAN_4MHZ		= 1<<16,
+	IEEE80211_CHAN_8MHZ		= 1<<17,
+	IEEE80211_CHAN_16MHZ		= 1<<18,
 };
 
 #define IEEE80211_CHAN_NO_HT40 \
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 0584e0d349f0..4e119c6afa31 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -3737,6 +3737,16 @@ enum nl80211_wmm_rule {
  * @NL80211_FREQUENCY_ATTR_NO_HE: HE operation is not allowed on this channel
  *	in current regulatory domain.
  * @NL80211_FREQUENCY_ATTR_OFFSET: frequency offset in KHz
+ * @NL80211_FREQUENCY_ATTR_1MHZ: 1 MHz operation is allowed
+ *	on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_2MHZ: 2 MHz operation is allowed
+ *	on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_4MHZ: 4 MHz operation is allowed
+ *	on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_8MHZ: 8 MHz operation is allowed
+ *	on this channel in current regulatory domain.
+ * @NL80211_FREQUENCY_ATTR_16MHZ: 16 MHz operation is allowed
+ *	on this channel in current regulatory domain.
  * @NL80211_FREQUENCY_ATTR_MAX: highest frequency attribute number
  *	currently defined
  * @__NL80211_FREQUENCY_ATTR_AFTER_LAST: internal use
@@ -3768,6 +3778,11 @@ enum nl80211_frequency_attr {
 	NL80211_FREQUENCY_ATTR_WMM,
 	NL80211_FREQUENCY_ATTR_NO_HE,
 	NL80211_FREQUENCY_ATTR_OFFSET,
+	NL80211_FREQUENCY_ATTR_1MHZ,
+	NL80211_FREQUENCY_ATTR_2MHZ,
+	NL80211_FREQUENCY_ATTR_4MHZ,
+	NL80211_FREQUENCY_ATTR_8MHZ,
+	NL80211_FREQUENCY_ATTR_16MHZ,
 
 	/* keep last */
 	__NL80211_FREQUENCY_ATTR_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 201d029687cc..e408624018d5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1010,6 +1010,21 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 		if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
 		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
 			goto nla_put_failure;
+		if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
+		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
+			goto nla_put_failure;
+		if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
+		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
+			goto nla_put_failure;
+		if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
+		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
+			goto nla_put_failure;
+		if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
+		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
+			goto nla_put_failure;
+		if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
+		    nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
+			goto nla_put_failure;
 	}
 
 	if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
-- 
2.20.1

[PATCH v3 03/22] cfg80211: regulatory: handle S1G channels

[Thomas Pedersen]

S1G channels have a minimum bandwidth of 1Mhz, and there
is a 1:1 mapping of allowed bandwidth to channel number.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>

---

v2:
 - drop the freq_reg_info() interface changes and move the
   check for S1G band inside. Fixes a driver compile
   error.
 - fix iterating past bws[] in __freq_reg_info() by
   setting initial element to 0.
   Reported-by: kernel test robot <lkp@intel.com>

v3:
  - use ARRAY_SIZE()
---
 net/wireless/reg.c | 70 ++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 58 insertions(+), 12 deletions(-)

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index dcd3d39a5372..2864ca2c3cfd 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1617,9 +1617,11 @@ __freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 min_bw)
 {
 	const struct ieee80211_regdomain *regd = reg_get_regdomain(wiphy);
 	const struct ieee80211_reg_rule *reg_rule = NULL;
+	const u32 bws[] = {0, 1, 2, 4, 5, 8, 10, 16, 20};
+	int i = ARRAY_SIZE(bws) - 1;
 	u32 bw;
 
-	for (bw = MHZ_TO_KHZ(20); bw >= min_bw; bw = bw / 2) {
+	for (bw = MHZ_TO_KHZ(bws[i]); bw >= min_bw; bw = MHZ_TO_KHZ(bws[i--])) {
 		reg_rule = freq_reg_info_regd(center_freq, regd, bw);
 		if (!IS_ERR(reg_rule))
 			return reg_rule;
@@ -1631,7 +1633,9 @@ __freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 min_bw)
 const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
 					       u32 center_freq)
 {
-	return __freq_reg_info(wiphy, center_freq, MHZ_TO_KHZ(20));
+	u32 min_bw = center_freq < MHZ_TO_KHZ(1000) ? 1 : 20;
+
+	return __freq_reg_info(wiphy, center_freq, MHZ_TO_KHZ(min_bw));
 }
 EXPORT_SYMBOL(freq_reg_info);
 
@@ -1659,6 +1663,7 @@ static uint32_t reg_rule_to_chan_bw_flags(const struct ieee80211_regdomain *regd
 {
 	const struct ieee80211_freq_range *freq_range = NULL;
 	u32 max_bandwidth_khz, center_freq_khz, bw_flags = 0;
+	bool is_s1g = chan->band == NL80211_BAND_S1GHZ;
 
 	freq_range = &reg_rule->freq_range;
 
@@ -1678,16 +1683,57 @@ static uint32_t reg_rule_to_chan_bw_flags(const struct ieee80211_regdomain *regd
 					MHZ_TO_KHZ(20)))
 		bw_flags |= IEEE80211_CHAN_NO_20MHZ;
 
-	if (max_bandwidth_khz < MHZ_TO_KHZ(10))
-		bw_flags |= IEEE80211_CHAN_NO_10MHZ;
-	if (max_bandwidth_khz < MHZ_TO_KHZ(20))
-		bw_flags |= IEEE80211_CHAN_NO_20MHZ;
-	if (max_bandwidth_khz < MHZ_TO_KHZ(40))
-		bw_flags |= IEEE80211_CHAN_NO_HT40;
-	if (max_bandwidth_khz < MHZ_TO_KHZ(80))
-		bw_flags |= IEEE80211_CHAN_NO_80MHZ;
-	if (max_bandwidth_khz < MHZ_TO_KHZ(160))
-		bw_flags |= IEEE80211_CHAN_NO_160MHZ;
+	if (is_s1g) {
+		/* S1G is strict about non overlapping channels. We can
+		 * calculate which bandwidth is allowed per channel by finding
+		 * the largest bandwidth which cleanly divides the freq_range.
+		 */
+		int edge_offset;
+		int ch_bw = max_bandwidth_khz;
+
+		while (ch_bw) {
+			edge_offset = (center_freq_khz - ch_bw / 2) -
+				      freq_range->start_freq_khz;
+			if (edge_offset % ch_bw == 0) {
+				switch (KHZ_TO_MHZ(ch_bw)) {
+				case 1:
+					bw_flags |= IEEE80211_CHAN_1MHZ;
+					break;
+				case 2:
+					bw_flags |= IEEE80211_CHAN_2MHZ;
+					break;
+				case 4:
+					bw_flags |= IEEE80211_CHAN_4MHZ;
+					break;
+				case 8:
+					bw_flags |= IEEE80211_CHAN_8MHZ;
+					break;
+				case 16:
+					bw_flags |= IEEE80211_CHAN_16MHZ;
+					break;
+				default:
+					/* If we got here, no bandwidths fit on
+					 * this frequency, ie. band edge.
+					 */
+					bw_flags |= IEEE80211_CHAN_DISABLED;
+					break;
+				}
+				break;
+			}
+			ch_bw /= 2;
+		}
+	} else {
+		if (max_bandwidth_khz < MHZ_TO_KHZ(10))
+			bw_flags |= IEEE80211_CHAN_NO_10MHZ;
+		if (max_bandwidth_khz < MHZ_TO_KHZ(20))
+			bw_flags |= IEEE80211_CHAN_NO_20MHZ;
+		if (max_bandwidth_khz < MHZ_TO_KHZ(40))
+			bw_flags |= IEEE80211_CHAN_NO_HT40;
+		if (max_bandwidth_khz < MHZ_TO_KHZ(80))
+			bw_flags |= IEEE80211_CHAN_NO_80MHZ;
+		if (max_bandwidth_khz < MHZ_TO_KHZ(160))
+			bw_flags |= IEEE80211_CHAN_NO_160MHZ;
+	}
 	return bw_flags;
 }
 
-- 
2.20.1

[PATCH v3 04/22] nl80211: correctly validate S1G beacon head

[Thomas Pedersen]

The S1G beacon has a different header size than regular
beacons, so adjust the beacon head validator.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/wireless/nl80211.c | 16 +++++++++++++---
 net/wireless/util.c    |  5 +++++
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index e408624018d5..8cf50bfedb01 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -209,14 +209,24 @@ static int validate_beacon_head(const struct nlattr *attr,
 	unsigned int len = nla_len(attr);
 	const struct element *elem;
 	const struct ieee80211_mgmt *mgmt = (void *)data;
-	unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
-					 u.beacon.variable);
+	bool s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
+	unsigned int fixedlen, hdrlen;
+
+	if (s1g_bcn) {
+		fixedlen = offsetof(struct ieee80211_ext,
+				    u.s1g_beacon.variable);
+		hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
+	} else {
+		fixedlen = offsetof(struct ieee80211_mgmt,
+				    u.beacon.variable);
+		hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
+	}
 
 	if (len < fixedlen)
 		goto err;
 
 	if (ieee80211_hdrlen(mgmt->frame_control) !=
-	    offsetof(struct ieee80211_mgmt, u.beacon))
+	    hdrlen)
 		goto err;
 
 	data += fixedlen;
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 7c5d5365a5eb..11822cd05a9f 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -397,6 +397,11 @@ unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc)
 {
 	unsigned int hdrlen = 24;
 
+	if (ieee80211_is_ext(fc)) {
+		hdrlen = 4;
+		goto out;
+	}
+
 	if (ieee80211_is_data(fc)) {
 		if (ieee80211_has_a4(fc))
 			hdrlen = 30;
-- 
2.20.1

[PATCH v3 05/22] nl80211: support setting S1G channels

[Thomas Pedersen]

S1G channels have a single width defined per frequency, so
derive it from the channel flags with
ieee80211_s1g_channel_width().

Also support setting an S1G channel where control frequency may
differ from operating, and add some basic validation to
ensure the control channel is with the operating.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/net/cfg80211.h |  10 ++++
 net/wireless/chan.c    | 130 ++++++++++++++++++++++++-----------------
 net/wireless/util.c    |  27 +++++++++
 3 files changed, 115 insertions(+), 52 deletions(-)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index e4d4fbcb2edc..d3d85bd9c0aa 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -5293,6 +5293,16 @@ ieee80211_channel_to_khz(const struct ieee80211_channel *chan)
 	return MHZ_TO_KHZ(chan->center_freq) + chan->freq_offset;
 }
 
+/**
+ * ieee80211_s1g_channel_width - get allowed channel width from @chan
+ *
+ * Only allowed for band NL80211_BAND_S1GHZ
+ * @chan: channel
+ * Return: The allowed channel width for this center_freq
+ */
+enum nl80211_chan_width
+ieee80211_s1g_channel_width(const struct ieee80211_channel *chan);
+
 /**
  * ieee80211_channel_to_freq_khz - convert channel number to frequency
  * @chan: channel number
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index e97a4f0c32a3..e27a6d5497b5 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -140,9 +140,62 @@ static bool cfg80211_edmg_chandef_valid(const struct cfg80211_chan_def *chandef)
 	return true;
 }
 
+static int nl80211_chan_width_to_mhz(enum nl80211_chan_width chan_width)
+{
+	int mhz;
+
+	switch (chan_width) {
+	case NL80211_CHAN_WIDTH_1:
+		mhz = 1;
+		break;
+	case NL80211_CHAN_WIDTH_2:
+		mhz = 2;
+		break;
+	case NL80211_CHAN_WIDTH_4:
+		mhz = 4;
+		break;
+	case NL80211_CHAN_WIDTH_8:
+		mhz = 8;
+		break;
+	case NL80211_CHAN_WIDTH_16:
+		mhz = 16;
+		break;
+	case NL80211_CHAN_WIDTH_5:
+		mhz = 5;
+		break;
+	case NL80211_CHAN_WIDTH_10:
+		mhz = 10;
+		break;
+	case NL80211_CHAN_WIDTH_20:
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		mhz = 20;
+		break;
+	case NL80211_CHAN_WIDTH_40:
+		mhz = 40;
+		break;
+	case NL80211_CHAN_WIDTH_80P80:
+	case NL80211_CHAN_WIDTH_80:
+		mhz = 80;
+		break;
+	case NL80211_CHAN_WIDTH_160:
+		mhz = 160;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		return -1;
+	}
+	return mhz;
+}
+
+static int cfg80211_chandef_get_width(const struct cfg80211_chan_def *c)
+{
+	return nl80211_chan_width_to_mhz(c->width);
+}
+
 bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
 {
-	u32 control_freq;
+	u32 control_freq, oper_freq;
+	int oper_width, control_width;
 
 	if (!chandef->chan)
 		return false;
@@ -154,10 +207,6 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
 
 	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:
@@ -168,6 +217,30 @@ bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef)
 		if (chandef->center_freq2)
 			return false;
 		break;
+	case NL80211_CHAN_WIDTH_2:
+	case NL80211_CHAN_WIDTH_4:
+	case NL80211_CHAN_WIDTH_8:
+	case NL80211_CHAN_WIDTH_16:
+		control_freq = ieee80211_channel_to_khz(chandef->chan);
+		oper_freq = ieee80211_chandef_to_khz(chandef);
+		control_width = nl80211_chan_width_to_mhz(
+					ieee80211_s1g_channel_width(
+								chandef->chan));
+		oper_width = cfg80211_chandef_get_width(chandef);
+
+		if (oper_width < 0 || control_width < 0)
+			return false;
+		if (chandef->center_freq2)
+			return false;
+
+		if (control_freq + MHZ_TO_KHZ(control_width) / 2 >
+		    oper_freq + MHZ_TO_KHZ(oper_width) / 2)
+			return false;
+
+		if (control_freq - MHZ_TO_KHZ(control_width) / 2 <
+		    oper_freq - MHZ_TO_KHZ(oper_width) / 2)
+			return false;
+		break;
 	case NL80211_CHAN_WIDTH_40:
 		if (chandef->center_freq1 != control_freq + 10 &&
 		    chandef->center_freq1 != control_freq - 10)
@@ -263,53 +336,6 @@ static void chandef_primary_freqs(const struct cfg80211_chan_def *c,
 	}
 }
 
-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;
-	case NL80211_CHAN_WIDTH_10:
-		width = 10;
-		break;
-	case NL80211_CHAN_WIDTH_20:
-	case NL80211_CHAN_WIDTH_20_NOHT:
-		width = 20;
-		break;
-	case NL80211_CHAN_WIDTH_40:
-		width = 40;
-		break;
-	case NL80211_CHAN_WIDTH_80P80:
-	case NL80211_CHAN_WIDTH_80:
-		width = 80;
-		break;
-	case NL80211_CHAN_WIDTH_160:
-		width = 160;
-		break;
-	default:
-		WARN_ON_ONCE(1);
-		return -1;
-	}
-	return width;
-}
-
 const struct cfg80211_chan_def *
 cfg80211_chandef_compatible(const struct cfg80211_chan_def *c1,
 			    const struct cfg80211_chan_def *c2)
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 11822cd05a9f..86867b42f8aa 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -111,6 +111,33 @@ u32 ieee80211_channel_to_freq_khz(int chan, enum nl80211_band band)
 }
 EXPORT_SYMBOL(ieee80211_channel_to_freq_khz);
 
+enum nl80211_chan_width
+ieee80211_s1g_channel_width(const struct ieee80211_channel *chan)
+{
+	if (WARN_ON(!chan || chan->band != NL80211_BAND_S1GHZ))
+		return NL80211_CHAN_WIDTH_20_NOHT;
+
+	/*S1G defines a single allowed channel width per channel.
+	 * Extract that width here.
+	 */
+	if (chan->flags & IEEE80211_CHAN_1MHZ)
+		return NL80211_CHAN_WIDTH_1;
+	else if (chan->flags & IEEE80211_CHAN_2MHZ)
+		return NL80211_CHAN_WIDTH_2;
+	else if (chan->flags & IEEE80211_CHAN_4MHZ)
+		return NL80211_CHAN_WIDTH_4;
+	else if (chan->flags & IEEE80211_CHAN_8MHZ)
+		return NL80211_CHAN_WIDTH_8;
+	else if (chan->flags & IEEE80211_CHAN_16MHZ)
+		return NL80211_CHAN_WIDTH_16;
+
+	pr_err("unknown channel width for channel at %dKHz?\n",
+	       ieee80211_channel_to_khz(chan));
+
+	return NL80211_CHAN_WIDTH_1;
+}
+EXPORT_SYMBOL(ieee80211_s1g_channel_width);
+
 int ieee80211_freq_khz_to_channel(u32 freq)
 {
 	/* TODO: just handle MHz for now */
-- 
2.20.1

[PATCH v3 06/22] {cfg,mac}80211: get correct default channel width for S1G

[Thomas Pedersen]

Until now, the wifi default channels were assumed to be
NL80211_CHAN_NO_HT, or NL80211_CHAN_WIDTH_20_NOHT. S1G
devices however do not support these channel types/width.
When a default channel width is requested (during default
chandef init, or chanctx removal when not using channel
context), for S1G calculate the correct width. Fixes eg.
configuring strange (20Mhz) width during a scan on the S1G
band.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/mac80211/chan.c |  9 ++++++++-
 net/wireless/chan.c | 10 ++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index bdc0f29dc6cd..8f48aff74c7b 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -536,7 +536,14 @@ static void ieee80211_del_chanctx(struct ieee80211_local *local,
 
 	if (!local->use_chanctx) {
 		struct cfg80211_chan_def *chandef = &local->_oper_chandef;
-		chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
+		/* S1G doesn't have 20MHz, so get the correct width for the
+		 * current channel.
+		 */
+		if (chandef->chan->band == NL80211_BAND_S1GHZ)
+			chandef->width =
+				ieee80211_s1g_channel_width(chandef->chan);
+		else
+			chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
 		chandef->center_freq1 = chandef->chan->center_freq;
 		chandef->freq1_offset = chandef->chan->freq_offset;
 		chandef->center_freq2 = 0;
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index e27a6d5497b5..1407440779df 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -32,6 +32,16 @@ void cfg80211_chandef_create(struct cfg80211_chan_def *chandef,
 	chandef->edmg.bw_config = 0;
 	chandef->edmg.channels = 0;
 
+	/* S1G allows a single width per channel, and since chan_type seems to
+	 * be for backwards compatibility only, ignore it and return the per
+	 * frequency width.
+	 */
+	if (chan->band == NL80211_BAND_S1GHZ) {
+		chandef->width = ieee80211_s1g_channel_width(chan);
+		chandef->center_freq1 = chan->center_freq;
+		return;
+	}
+
 	switch (chan_type) {
 	case NL80211_CHAN_NO_HT:
 		chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
-- 
2.20.1

[PATCH v3 07/22] mac80211: s1g: choose scanning width based on frequency

[Thomas Pedersen]

An S1G BSS can beacon at either 1 or 2 MHz and the channel
width is unique to a given frequency. Ignore scan channel
width for now and use the allowed channel width.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/mac80211/scan.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 5ac2785cdc7b..5002791fe165 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -905,6 +905,17 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
 	local->scan_chandef.center_freq1 = chan->center_freq;
 	local->scan_chandef.freq1_offset = chan->freq_offset;
 	local->scan_chandef.center_freq2 = 0;
+
+	/* For scanning on the S1G band, ignore scan_width (which is constant
+	 * across all channels) for now since channel width is specific to each
+	 * channel. Detect the required channel width here and likely revisit
+	 * later. Maybe scan_width could be used to build the channel scan list?
+	 */
+	if (chan->band == NL80211_BAND_S1GHZ) {
+		local->scan_chandef.width = ieee80211_s1g_channel_width(chan);
+		goto  set_channel;
+	}
+
 	switch (scan_req->scan_width) {
 	case NL80211_BSS_CHAN_WIDTH_5:
 		local->scan_chandef.width = NL80211_CHAN_WIDTH_5;
@@ -925,8 +936,14 @@ static void ieee80211_scan_state_set_channel(struct ieee80211_local *local,
 		else
 			local->scan_chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
 		break;
+	case NL80211_BSS_CHAN_WIDTH_1:
+	case NL80211_BSS_CHAN_WIDTH_2:
+		/* shouldn't get here, S1G handled above */
+		WARN_ON(1);
+		break;
 	}
 
+set_channel:
 	if (ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL))
 		skip = 1;
 
-- 
2.20.1

[PATCH v3 08/22] nl80211: support S1G capabilities

[Thomas Pedersen]

Declare the structures needed to define S1G capabilities.

NL80211_ATTR_S1G_CAPABILITY can be passed along with
NL80211_ATTR_S1G_CAPABILITY_MASK to NL80211_CMD_ASSOCIATE
to indicate S1G capabilities which should override the
hardware capabilities in eg. the association request.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/net/cfg80211.h       |  3 +++
 include/uapi/linux/nl80211.h |  9 +++++++++
 net/wireless/nl80211.c       | 16 ++++++++++++++++
 3 files changed, 28 insertions(+)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index d3d85bd9c0aa..de04c7996b27 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2489,6 +2489,8 @@ enum cfg80211_assoc_req_flags {
  * @fils_nonces: FILS nonces (part of AAD) for protecting (Re)Association
  *	Request/Response frame or %NULL if FILS is not used. This field starts
  *	with 16 octets of STA Nonce followed by 16 octets of AP Nonce.
+ * @s1g_capa: S1G capability override
+ * @s1g_capa_mask: S1G capability override mask
  */
 struct cfg80211_assoc_request {
 	struct cfg80211_bss *bss;
@@ -2503,6 +2505,7 @@ struct cfg80211_assoc_request {
 	const u8 *fils_kek;
 	size_t fils_kek_len;
 	const u8 *fils_nonces;
+	struct ieee80211_s1g_cap s1g_capa, s1g_capa_mask;
 };
 
 /**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 4e119c6afa31..70076492ebc9 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2513,6 +2513,12 @@ enum nl80211_commands {
  * @NL80211_ATTR_HE_6GHZ_CAPABILITY: HE 6 GHz Band Capability element (from
  *	association request when used with NL80211_CMD_NEW_STATION).
  *
+ * @NL80211_ATTR_S1G_CAPABILITY: S1G Capability information element (from
+ *	association request when used with NL80211_CMD_NEW_STATION)
+ * @NL80211_ATTR_S1G_CAPABILITY_MASK: S1G Capability Information element
+ *	override mask. Used with NL80211_ATTR_S1G_CAPABILITY in
+ *	NL80211_CMD_ASSOCIATE or NL80211_CMD_CONNECT.
+ *
  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2995,6 +3001,8 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_HE_6GHZ_CAPABILITY,
 
+	NL80211_ATTR_S1G_CAPABILITY,
+	NL80211_ATTR_S1G_CAPABILITY_MASK,
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,
@@ -3046,6 +3054,7 @@ enum nl80211_attrs {
 #define NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY	24
 #define NL80211_HT_CAPABILITY_LEN		26
 #define NL80211_VHT_CAPABILITY_LEN		12
+#define NL80211_S1G_CAPABILITY_LEN		15
 #define NL80211_HE_MIN_CAPABILITY_LEN           16
 #define NL80211_HE_MAX_CAPABILITY_LEN           54
 #define NL80211_MAX_NR_CIPHER_SUITES		5
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 8cf50bfedb01..493813177df2 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -685,6 +685,9 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 	[NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 	[NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 		NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
+	[NL80211_ATTR_S1G_CAPABILITY] = { .len = NL80211_S1G_CAPABILITY_LEN },
+	[NL80211_ATTR_S1G_CAPABILITY_MASK] = {
+					.len = NL80211_S1G_CAPABILITY_LEN },
 };
 
 /* policy for the key attributes */
@@ -9698,6 +9701,19 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
 			nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
 	}
 
+	if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
+		memcpy(&req.s1g_capa_mask,
+		       nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
+		       sizeof(req.s1g_capa_mask));
+
+	if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
+		if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
+			return -EINVAL;
+		memcpy(&req.s1g_capa,
+		       nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
+		       sizeof(req.s1g_capa));
+	}
+
 	err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
 	if (!err) {
 		wdev_lock(dev->ieee80211_ptr);
-- 
2.20.1

[PATCH v3 09/22] mac80211: support S1G STA capabilities

[Thomas Pedersen]

Include the S1G Capabilities element in an association
request, and support the cfg80211 capability overrides.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/mac80211/ieee80211_i.h |  4 ++++
 net/mac80211/mlme.c        |  8 +++++++
 net/mac80211/util.c        | 45 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 57 insertions(+)

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 6bf879660a93..9363f43887b4 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -530,6 +530,8 @@ struct ieee80211_if_managed {
 	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
 	struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
 	struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
+	struct ieee80211_s1g_cap s1g_capa; /* configured S1G overrides */
+	struct ieee80211_s1g_cap s1g_capa_mask; /* valid s1g_capa bits */
 
 	/* TDLS support */
 	u8 tdls_peer[ETH_ALEN] __aligned(2);
@@ -2193,6 +2195,8 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
 				struct sk_buff *skb, bool need_basic,
 				enum nl80211_band band);
 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
+u8 *ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
+			       struct ieee80211_sta_s1g_cap *caps, u8 *buf);
 
 /* channel management */
 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index ac870309b911..b69889563457 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1018,6 +1018,10 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 		pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
 	}
 
+	if (sband->band == NL80211_BAND_S1GHZ)
+		pos = ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap,
+						 skb_put(skb, 17));
+
 	/* add any remaining custom (i.e. vendor specific here) IEs */
 	if (assoc_data->ie_len) {
 		noffset = assoc_data->ie_len;
@@ -5461,6 +5465,10 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	memcpy(&ifmgd->vht_capa_mask, &req->vht_capa_mask,
 	       sizeof(ifmgd->vht_capa_mask));
 
+	memcpy(&ifmgd->s1g_capa, &req->s1g_capa, sizeof(ifmgd->s1g_capa));
+	memcpy(&ifmgd->s1g_capa_mask, &req->s1g_capa_mask,
+	       sizeof(ifmgd->s1g_capa_mask));
+
 	if (req->ie && req->ie_len) {
 		memcpy(assoc_data->ie, req->ie, req->ie_len);
 		assoc_data->ie_len = req->ie_len;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index c8504ffc71a1..27b2f1ceca69 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -4276,6 +4276,51 @@ int ieee80211_max_num_channels(struct ieee80211_local *local)
 	return max_num_different_channels;
 }
 
+u8 *ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
+			       struct ieee80211_sta_s1g_cap *own_cap, u8 *buf)
+{
+	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+	struct ieee80211_s1g_cap s1g_capab;
+	u8 *pos = buf;
+	int i;
+
+	if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
+		return pos;
+
+	if (!own_cap->s1g)
+		return pos;
+
+	memcpy(s1g_capab.capab_info, own_cap->cap, sizeof(own_cap->cap));
+	memcpy(s1g_capab.supp_mcs_nss, own_cap->nss_mcs,
+	       sizeof(own_cap->nss_mcs));
+
+	/* override the capability info */
+	for (i = 0; i < sizeof(ifmgd->s1g_capa.capab_info); i++) {
+		u8 mask = ifmgd->s1g_capa_mask.capab_info[i];
+
+		s1g_capab.capab_info[i] &= ~mask;
+		s1g_capab.capab_info[i] |= (ifmgd->s1g_capa.capab_info[i] &
+					    mask);
+	}
+
+	/* then MCS and NSS set */
+	for (i = 0; i < sizeof(ifmgd->s1g_capa.supp_mcs_nss); i++) {
+		u8 mask = ifmgd->s1g_capa_mask.supp_mcs_nss[i];
+
+		s1g_capab.supp_mcs_nss[i] &= ~mask;
+		s1g_capab.supp_mcs_nss[i] |= (ifmgd->s1g_capa.supp_mcs_nss[i] &
+					      mask);
+	}
+
+	*pos++ = WLAN_EID_S1G_CAPABILITIES;
+	*pos++ = sizeof(s1g_capab);
+
+	memcpy(pos, &s1g_capab, sizeof(s1g_capab));
+	pos += sizeof(s1g_capab);
+
+	return pos;
+}
+
 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo)
 {
 	*buf++ = WLAN_EID_VENDOR_SPECIFIC;
-- 
2.20.1

[PATCH v3 10/22] cfg80211: convert S1G beacon to scan results

[Thomas Pedersen]

The S1G beacon is an extension frame as opposed to
management frame for the regular beacon. This means we may
have to occasionally cast the frame buffer to a different
header type. Luckily this isn't too bad as scan results
mostly only care about the IEs.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/linux/ieee80211.h | 32 ++++++++++++++++++++++
 net/wireless/scan.c       | 57 ++++++++++++++++++++++++++++++++-------
 2 files changed, 80 insertions(+), 9 deletions(-)

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 53fba39d4ba6..bca4bb443291 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -151,6 +151,9 @@
 
 #define IEEE80211_ANO_NETTYPE_WILD              15
 
+/* bits unique to S1G beacon */
+#define IEEE80211_S1G_BCN_NEXT_TBTT    0x100
+
 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 #define IEEE80211_CTL_EXT_POLL		0x2000
 #define IEEE80211_CTL_EXT_SPR		0x3000
@@ -553,6 +556,28 @@ static inline bool ieee80211_is_s1g_beacon(__le16 fc)
 	       cpu_to_le16(IEEE80211_FTYPE_EXT | IEEE80211_STYPE_S1G_BEACON);
 }
 
+/**
+ * ieee80211_next_tbtt_present - check if IEEE80211_FTYPE_EXT &&
+ * IEEE80211_STYPE_S1G_BEACON && IEEE80211_S1G_BCN_NEXT_TBTT
+ * @fc: frame control bytes in little-endian byteorder
+ */
+static inline bool ieee80211_next_tbtt_present(__le16 fc)
+{
+	return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
+	       cpu_to_le16(IEEE80211_FTYPE_EXT | IEEE80211_STYPE_S1G_BEACON) &&
+	       fc & cpu_to_le16(IEEE80211_S1G_BCN_NEXT_TBTT);
+}
+
+/**
+ * ieee80211_is_s1g_short_beacon - check if next tbtt present bit is set. Only
+ * true for S1G beacons when they're short.
+ * @fc: frame control bytes in little-endian byteorder
+ */
+static inline bool ieee80211_is_s1g_short_beacon(__le16 fc)
+{
+	return ieee80211_is_s1g_beacon(fc) && ieee80211_next_tbtt_present(fc);
+}
+
 /**
  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
  * @fc: frame control bytes in little-endian byteorder
@@ -1034,6 +1059,13 @@ struct ieee80211_ext {
 			u8 change_seq;
 			u8 variable[0];
 		} __packed s1g_beacon;
+		struct {
+			u8 sa[ETH_ALEN];
+			__le32 timestamp;
+			u8 change_seq;
+			u8 next_tbtt[3];
+			u8 variable[0];
+		} __packed s1g_short_beacon;
 	} u;
 } __packed __aligned(2);
 
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 84fc8ab16dd2..b4c85e8f2107 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1807,8 +1807,11 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy,
 	struct cfg80211_bss_ies *ies;
 	struct ieee80211_channel *channel;
 	bool signal_valid;
-	size_t ielen = len - offsetof(struct ieee80211_mgmt,
-				      u.probe_resp.variable);
+	struct ieee80211_ext *ext = NULL;
+	u8 *bssid, *variable;
+	u16 capability, beacon_int;
+	size_t ielen, min_hdr_len = offsetof(struct ieee80211_mgmt,
+					     u.probe_resp.variable);
 	int bss_type;
 
 	BUILD_BUG_ON(offsetof(struct ieee80211_mgmt, u.probe_resp.variable) !=
@@ -1826,21 +1829,57 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy,
 		    (data->signal < 0 || data->signal > 100)))
 		return NULL;
 
-	if (WARN_ON(len < offsetof(struct ieee80211_mgmt, u.probe_resp.variable)))
+	if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
+		ext = (void *) mgmt;
+		min_hdr_len = offsetof(struct ieee80211_ext, u.s1g_beacon);
+		if (ieee80211_is_s1g_short_beacon(mgmt->frame_control))
+			min_hdr_len = offsetof(struct ieee80211_ext,
+					       u.s1g_short_beacon.variable);
+	}
+
+	if (WARN_ON(len < min_hdr_len))
 		return NULL;
 
-	channel = cfg80211_get_bss_channel(wiphy, mgmt->u.beacon.variable,
+	ielen = len - min_hdr_len;
+	variable = mgmt->u.probe_resp.variable;
+	if (ext) {
+		if (ieee80211_is_s1g_short_beacon(mgmt->frame_control))
+			variable = ext->u.s1g_short_beacon.variable;
+		else
+			variable = ext->u.s1g_beacon.variable;
+	}
+
+	channel = cfg80211_get_bss_channel(wiphy, variable,
 					   ielen, data->chan, data->scan_width);
 	if (!channel)
 		return NULL;
 
+	if (ext) {
+		struct ieee80211_s1g_bcn_compat_ie *compat;
+		u8 *ie;
+
+		ie = (void *)cfg80211_find_ie(WLAN_EID_S1G_BCN_COMPAT,
+					      variable, ielen);
+		if (!ie)
+			return NULL;
+		compat = (void *)(ie + 2);
+		bssid = ext->u.s1g_beacon.sa;
+		capability = le16_to_cpu(compat->compat_info);
+		beacon_int = le16_to_cpu(compat->beacon_int);
+	} else {
+		bssid = mgmt->bssid;
+		beacon_int = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
+		capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
+	}
+
 	ies = kzalloc(sizeof(*ies) + ielen, gfp);
 	if (!ies)
 		return NULL;
 	ies->len = ielen;
 	ies->tsf = le64_to_cpu(mgmt->u.probe_resp.timestamp);
-	ies->from_beacon = ieee80211_is_beacon(mgmt->frame_control);
-	memcpy(ies->data, mgmt->u.probe_resp.variable, ielen);
+	ies->from_beacon = ieee80211_is_beacon(mgmt->frame_control) ||
+			   ieee80211_is_s1g_beacon(mgmt->frame_control);
+	memcpy(ies->data, variable, ielen);
 
 	if (ieee80211_is_probe_resp(mgmt->frame_control))
 		rcu_assign_pointer(tmp.pub.proberesp_ies, ies);
@@ -1848,12 +1887,12 @@ cfg80211_inform_single_bss_frame_data(struct wiphy *wiphy,
 		rcu_assign_pointer(tmp.pub.beacon_ies, ies);
 	rcu_assign_pointer(tmp.pub.ies, ies);
 
-	memcpy(tmp.pub.bssid, mgmt->bssid, ETH_ALEN);
+	memcpy(tmp.pub.bssid, bssid, ETH_ALEN);
+	tmp.pub.beacon_interval = beacon_int;
+	tmp.pub.capability = capability;
 	tmp.pub.channel = channel;
 	tmp.pub.scan_width = data->scan_width;
 	tmp.pub.signal = data->signal;
-	tmp.pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
-	tmp.pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
 	tmp.ts_boottime = data->boottime_ns;
 	tmp.parent_tsf = data->parent_tsf;
 	tmp.pub.chains = data->chains;
-- 
2.20.1

[PATCH v3 11/22] cfg80211: parse S1G Operation element for BSS channel

[Thomas Pedersen]

Extract the BSS primary channel from the S1G Operation
element.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/wireless/scan.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index b4c85e8f2107..c2dcb9092257 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1318,15 +1318,26 @@ cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen,
 	tmp = cfg80211_find_ie(WLAN_EID_DS_PARAMS, ie, ielen);
 	if (tmp && tmp[1] == 1) {
 		channel_number = tmp[2];
-	} else {
-		tmp = cfg80211_find_ie(WLAN_EID_HT_OPERATION, ie, ielen);
-		if (tmp && tmp[1] >= sizeof(struct ieee80211_ht_operation)) {
-			struct ieee80211_ht_operation *htop = (void *)(tmp + 2);
+		goto found_channel;
+	}
 
-			channel_number = htop->primary_chan;
-		}
+	tmp = cfg80211_find_ie(WLAN_EID_HT_OPERATION, ie, ielen);
+	if (tmp && tmp[1] >= sizeof(struct ieee80211_ht_operation)) {
+		struct ieee80211_ht_operation *htop = (void *)(tmp + 2);
+
+		channel_number = htop->primary_chan;
+		goto found_channel;
+	}
+
+	tmp = cfg80211_find_ie(WLAN_EID_S1G_OPERATION, ie, ielen);
+	if (tmp && tmp[1] >= sizeof(struct ieee80211_s1g_oper_ie)) {
+		struct ieee80211_s1g_oper_ie *s1gop = (void *)(tmp + 2);
+
+		channel_number = s1gop->primary_ch;
+		goto found_channel;
 	}
 
+found_channel:
 	if (channel_number < 0) {
 		/* No channel information in frame payload */
 		return channel;
-- 
2.20.1

[PATCH v3 12/22] mac80211: convert S1G beacon to scan results

[Thomas Pedersen]

This commit finds the correct offset for Information
Elements in S1G beacon frames so they can be reported in
scan results, and track whether a given BSS is S1G.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/mac80211/ieee80211_i.h |  7 +++++++
 net/mac80211/rx.c          |  3 ++-
 net/mac80211/scan.c        | 20 ++++++++++++++++----
 net/mac80211/util.c        | 28 ++++++++++++++++++++++++++++
 4 files changed, 53 insertions(+), 5 deletions(-)

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 9363f43887b4..8bbdc27d57c6 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -127,6 +127,9 @@ struct ieee80211_bss {
 
 	/* Keep track of what bits of information we have valid info for. */
 	u8 valid_data;
+
+	/* BSS info was transmitted by an S1G STA */
+	u8 s1g;
 };
 
 /**
@@ -1524,6 +1527,10 @@ struct ieee802_11_elems {
 	u8 dtim_count;
 	u8 dtim_period;
 	const struct ieee80211_addba_ext_ie *addba_ext_ie;
+	const struct ieee80211_s1g_cap *s1g_capab;
+	const struct ieee80211_s1g_oper_ie *s1g_oper;
+	const u8 *s1g_tsbtt;
+	const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
 
 	/* length of them, respectively */
 	u8 ext_capab_len;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 836cde516a18..5b92f56682e2 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -4586,7 +4586,8 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
 	ieee80211_verify_alignment(&rx);
 
 	if (unlikely(ieee80211_is_probe_resp(hdr->frame_control) ||
-		     ieee80211_is_beacon(hdr->frame_control)))
+		     ieee80211_is_beacon(hdr->frame_control) ||
+		     ieee80211_is_s1g_beacon(hdr->frame_control)))
 		ieee80211_scan_rx(local, skb);
 
 	if (ieee80211_is_data(fc)) {
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 5002791fe165..3dd65b7c839b 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -124,6 +124,9 @@ ieee80211_update_bss_from_elems(struct ieee80211_local *local,
 			bss->valid_data |= IEEE80211_BSS_VALID_WMM;
 	}
 
+	if (!elems->parse_error && elems->s1g_capab)
+		bss->s1g = true;
+
 	if (beacon) {
 		struct ieee80211_supported_band *sband =
 			local->hw.wiphy->bands[rx_status->band];
@@ -146,7 +149,8 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
 			  struct ieee80211_mgmt *mgmt, size_t len,
 			  struct ieee80211_channel *channel)
 {
-	bool beacon = ieee80211_is_beacon(mgmt->frame_control);
+	bool beacon = ieee80211_is_beacon(mgmt->frame_control) ||
+		      ieee80211_is_s1g_beacon(mgmt->frame_control);
 	struct cfg80211_bss *cbss, *non_tx_cbss;
 	struct ieee80211_bss *bss, *non_tx_bss;
 	struct cfg80211_inform_bss bss_meta = {
@@ -195,6 +199,11 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
 		elements = mgmt->u.probe_resp.variable;
 		baselen = offsetof(struct ieee80211_mgmt,
 				   u.probe_resp.variable);
+	} else if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
+		struct ieee80211_ext *ext = (void *) mgmt;
+
+		baselen = offsetof(struct ieee80211_ext, u.s1g_beacon.variable);
+		elements = ext->u.s1g_beacon.variable;
 	} else {
 		baselen = offsetof(struct ieee80211_mgmt, u.beacon.variable);
 		elements = mgmt->u.beacon.variable;
@@ -246,9 +255,12 @@ void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb)
 	struct ieee80211_bss *bss;
 	struct ieee80211_channel *channel;
 
-	if (skb->len < 24 ||
-	    (!ieee80211_is_probe_resp(mgmt->frame_control) &&
-	     !ieee80211_is_beacon(mgmt->frame_control)))
+	if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
+		if (skb->len < 15)
+			return;
+	} else if (skb->len < 24 ||
+		 (!ieee80211_is_probe_resp(mgmt->frame_control) &&
+		  !ieee80211_is_beacon(mgmt->frame_control)))
 		return;
 
 	sdata1 = rcu_dereference(local->scan_sdata);
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 27b2f1ceca69..e474b2bf227b 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1003,6 +1003,10 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
 		case WLAN_EID_LINK_ID:
 		case WLAN_EID_BSS_MAX_IDLE_PERIOD:
 		case WLAN_EID_RSNX:
+		case WLAN_EID_S1G_BCN_COMPAT:
+		case WLAN_EID_S1G_CAPABILITIES:
+		case WLAN_EID_S1G_OPERATION:
+		case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
 		/*
 		 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
 		 * that if the content gets bigger it might be needed more than once
@@ -1288,6 +1292,30 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
 								&crc : NULL,
 							  elem, elems);
 			break;
+		case WLAN_EID_S1G_CAPABILITIES:
+			if (elen == 15)
+				elems->s1g_capab = (void *)pos;
+			else
+				elem_parse_failed = true;
+			break;
+		case WLAN_EID_S1G_OPERATION:
+			if (elen == 6)
+				elems->s1g_oper = (void *)pos;
+			else
+				elem_parse_failed = true;
+			break;
+		case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
+			if (elen == 2)
+				elems->s1g_tsbtt = (void *)pos;
+			else
+				elem_parse_failed = true;
+			break;
+		case WLAN_EID_S1G_BCN_COMPAT:
+			if (elen == sizeof(struct ieee80211_s1g_bcn_compat_ie))
+				elems->s1g_bcn_compat = (void *)pos;
+			else
+				elem_parse_failed = true;
+			break;
 		default:
 			break;
 		}
-- 
2.20.1

[PATCH v3 13/22] cfg80211: handle Association Response from S1G STA

[Thomas Pedersen]

The sending STA type is implicit based on beacon or probe
response content. If sending STA was an S1G STA, adjust
the Information Element location accordingly.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/linux/ieee80211.h |  5 +++++
 net/wireless/mlme.c       | 20 ++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index bca4bb443291..690d00505649 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1100,6 +1100,11 @@ struct ieee80211_mgmt {
 			/* followed by Supported rates */
 			u8 variable[0];
 		} __packed assoc_resp, reassoc_resp;
+		struct {
+			__le16 capab_info;
+			__le16 status_code;
+			u8 variable[0];
+		} __packed s1g_assoc_resp, s1g_reassoc_resp;
 		struct {
 			__le16 capab_info;
 			__le16 listen_interval;
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index db7333e20dd7..f8655452b81a 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -30,6 +30,8 @@ void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss,
 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buf;
 	struct cfg80211_connect_resp_params cr;
+	const struct cfg80211_bss_ies *ies;
+	const u8 *s1g;
 
 	memset(&cr, 0, sizeof(cr));
 	cr.status = (int)le16_to_cpu(mgmt->u.assoc_resp.status_code);
@@ -42,6 +44,24 @@ void cfg80211_rx_assoc_resp(struct net_device *dev, struct cfg80211_bss *bss,
 		len - offsetof(struct ieee80211_mgmt, u.assoc_resp.variable);
 	cr.timeout_reason = NL80211_TIMEOUT_UNSPECIFIED;
 
+	/* Detect whether this was an S1G Association Response and adjust IE
+	 * location accordingly.
+	 */
+	rcu_read_lock();
+	ies = rcu_dereference(bss->ies);
+	if (WARN_ON(!ies)) {
+		rcu_read_unlock();
+		return;
+	}
+	s1g = cfg80211_find_ie(WLAN_EID_S1G_CAPABILITIES, ies->data, ies->len);
+	if (s1g) {
+		cr.resp_ie = (u8 *)&mgmt->u.s1g_assoc_resp.variable;
+		cr.resp_ie_len =
+			len - offsetof(struct ieee80211_mgmt,
+				       u.s1g_assoc_resp.variable);
+	}
+	rcu_read_unlock();
+
 	trace_cfg80211_send_rx_assoc(dev, bss);
 
 	/*
-- 
2.20.1

[PATCH v3 14/22] mac80211: encode listen interval for S1G

[Thomas Pedersen]

S1G allows listen interval up to 2^14 * 10000 beacon
intervals. In order to do this listen interval needs a
scaling factor applied to the lower 14 bits. Calculate
this and properly encode the listen interval for S1G STAs.

See IEEE802.11ah-2016 Table 9-44a for reference.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/linux/ieee80211.h  |  9 +++++++++
 net/mac80211/ieee80211_i.h |  1 +
 net/mac80211/mlme.c        | 11 +++++++----
 net/mac80211/util.c        | 20 ++++++++++++++++++++
 4 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 690d00505649..a63ad4b4f973 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -2446,6 +2446,15 @@ ieee80211_he_spr_size(const u8 *he_spr_ie)
 #define S1G_OPER_CH_WIDTH_PRIMARY_1MHZ	BIT(0)
 #define S1G_OPER_CH_WIDTH_OPER		GENMASK(4, 1)
 
+
+#define LISTEN_INT_USF	GENMASK(15, 14)
+#define LISTEN_INT_UI	GENMASK(13, 0)
+
+#define IEEE80211_MAX_USF	FIELD_MAX(LISTEN_INT_USF)
+#define IEEE80211_MAX_UI	FIELD_MAX(LISTEN_INT_UI)
+
+static const int listen_int_usf[] = { 1, 10, 1000, 10000 };
+
 /* Authentication algorithms */
 #define WLAN_AUTH_OPEN 0
 #define WLAN_AUTH_SHARED_KEY 1
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 8bbdc27d57c6..cf78e356b25d 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -2293,6 +2293,7 @@ void ieee80211_tdls_chsw_work(struct work_struct *wk);
 void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
 				      const u8 *peer, u16 reason);
 const char *ieee80211_get_reason_code_string(u16 reason_code);
+__le16 ieee80211_encode_usf(int val);
 
 extern const struct ethtool_ops ieee80211_ethtool_ops;
 
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index b69889563457..6a62a221b89e 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -686,6 +686,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
+	struct ieee80211_bss *bss = (void *)assoc_data->bss->priv;
 	struct sk_buff *skb;
 	struct ieee80211_mgmt *mgmt;
 	u8 *pos, qos_info, *ie_start;
@@ -696,6 +697,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 	struct ieee80211_chanctx_conf *chanctx_conf;
 	struct ieee80211_channel *chan;
 	u32 rates = 0;
+	__le16 listen_int;
 	struct element *ext_capa = NULL;
 
 	/* we know it's writable, cast away the const */
@@ -784,13 +786,15 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 	memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
 	memcpy(mgmt->bssid, assoc_data->bss->bssid, ETH_ALEN);
 
+	listen_int = cpu_to_le16(bss->s1g ?
+			ieee80211_encode_usf(local->hw.conf.listen_interval) :
+			local->hw.conf.listen_interval);
 	if (!is_zero_ether_addr(assoc_data->prev_bssid)) {
 		skb_put(skb, 10);
 		mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 						  IEEE80211_STYPE_REASSOC_REQ);
 		mgmt->u.reassoc_req.capab_info = cpu_to_le16(capab);
-		mgmt->u.reassoc_req.listen_interval =
-				cpu_to_le16(local->hw.conf.listen_interval);
+		mgmt->u.reassoc_req.listen_interval = listen_int;
 		memcpy(mgmt->u.reassoc_req.current_ap, assoc_data->prev_bssid,
 		       ETH_ALEN);
 	} else {
@@ -798,8 +802,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 		mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
 						  IEEE80211_STYPE_ASSOC_REQ);
 		mgmt->u.assoc_req.capab_info = cpu_to_le16(capab);
-		mgmt->u.assoc_req.listen_interval =
-				cpu_to_le16(local->hw.conf.listen_interval);
+		mgmt->u.assoc_req.listen_interval = listen_int;
 	}
 
 	/* SSID */
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index e474b2bf227b..57c6f8bd2bdf 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -4391,3 +4391,23 @@ const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS] = {
 	IEEE80211_WMM_IE_STA_QOSINFO_AC_BE,
 	IEEE80211_WMM_IE_STA_QOSINFO_AC_BK
 };
+
+__le16 ieee80211_encode_usf(int listen_interval)
+{
+	u16 ui, usf = 0;
+
+	/* find greatest USF */
+	while (usf < IEEE80211_MAX_USF) {
+		if (listen_interval % listen_int_usf[usf + 1])
+			break;
+		usf += 1;
+	}
+	ui = listen_interval / listen_int_usf[usf];
+
+	/* error if there is a remainder. Should've been checked by user */
+	WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
+	listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
+			  FIELD_PREP(LISTEN_INT_UI, ui);
+
+	return listen_interval;
+}
-- 
2.20.1

[PATCH v3 15/22] mac80211: don't calculate duration for S1G

[Thomas Pedersen]

For now just skip the duration calculation for frames
transmitted on the S1G band and avoid a warning.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/mac80211/tx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index d2136007e2eb..bef19616c5f0 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -82,6 +82,10 @@ static __le16 ieee80211_duration(struct ieee80211_tx_data *tx,
 
 	erp = txrate->flags & IEEE80211_RATE_ERP_G;
 
+	/* TODO */
+	if (sband->band == NL80211_BAND_S1GHZ)
+		return 0;
+
 	/*
 	 * data and mgmt (except PS Poll):
 	 * - during CFP: 32768
-- 
2.20.1

[PATCH v3 16/22] mac80211: handle S1G low rates

[Thomas Pedersen]

S1G doesn't have legacy (sband->bitrates) rates, only MCS.
For now, just send a frame at MCS 0 if a low rate is
requested. Note we also redefine (since we're out of TX
flags) TX_RC_VHT_MCS as TX_RC_S1G_MCS to indicate an S1G
MCS. This is probably OK as VHT MCS is not valid on S1G
band and vice versa.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/net/mac80211.h |  2 ++
 net/mac80211/rate.c    | 33 ++++++++++++++++++++++++++-------
 2 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ec148b3e9c41..9ea743afb986 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -812,6 +812,8 @@ enum mac80211_tx_info_flags {
 
 #define IEEE80211_TX_CTL_STBC_SHIFT		23
 
+#define IEEE80211_TX_RC_S1G_MCS IEEE80211_TX_RC_VHT_MCS
+
 /**
  * enum mac80211_tx_control_flags - flags to describe transmit control
  *
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index b051f125d3af..63266d73c252 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -266,10 +266,15 @@ void ieee80211_check_rate_mask(struct ieee80211_sub_if_data *sdata)
 	if (WARN_ON(!sdata->vif.bss_conf.chandef.chan))
 		return;
 
+	band = sdata->vif.bss_conf.chandef.chan->band;
+	if (band == NL80211_BAND_S1GHZ) {
+		/* TODO */
+		return;
+	}
+
 	if (WARN_ON_ONCE(!basic_rates))
 		return;
 
-	band = sdata->vif.bss_conf.chandef.chan->band;
 	user_mask = sdata->rc_rateidx_mask[band];
 	sband = local->hw.wiphy->bands[band];
 
@@ -296,21 +301,29 @@ static bool rc_no_data_or_no_ack_use_min(struct ieee80211_tx_rate_control *txrc)
 		!ieee80211_is_data(fc);
 }
 
-static void rc_send_low_basicrate(s8 *idx, u32 basic_rates,
+static void rc_send_low_basicrate(struct ieee80211_tx_rate *rate,
+				  u32 basic_rates,
 				  struct ieee80211_supported_band *sband)
 {
 	u8 i;
 
+	if (sband->band == NL80211_BAND_S1GHZ) {
+		/* TODO */
+		rate->flags |= IEEE80211_TX_RC_S1G_MCS;
+		rate->idx = 0;
+		return;
+	}
+
 	if (basic_rates == 0)
 		return; /* assume basic rates unknown and accept rate */
-	if (*idx < 0)
+	if (rate->idx < 0)
 		return;
-	if (basic_rates & (1 << *idx))
+	if (basic_rates & (1 << rate->idx))
 		return; /* selected rate is a basic rate */
 
-	for (i = *idx + 1; i <= sband->n_bitrates; i++) {
+	for (i = rate->idx + 1; i <= sband->n_bitrates; i++) {
 		if (basic_rates & (1 << i)) {
-			*idx = i;
+			rate->idx = i;
 			return;
 		}
 	}
@@ -328,6 +341,12 @@ static void __rate_control_send_low(struct ieee80211_hw *hw,
 	u32 rate_flags =
 		ieee80211_chandef_rate_flags(&hw->conf.chandef);
 
+	if (sband->band == NL80211_BAND_S1GHZ) {
+		info->control.rates[0].flags |= IEEE80211_TX_RC_S1G_MCS;
+		info->control.rates[0].idx = 0;
+		return;
+	}
+
 	if ((sband->band == NL80211_BAND_2GHZ) &&
 	    (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE))
 		rate_flags |= IEEE80211_RATE_ERP_G;
@@ -388,7 +407,7 @@ static bool rate_control_send_low(struct ieee80211_sta *pubsta,
 		}
 
 		if (use_basicrate)
-			rc_send_low_basicrate(&info->control.rates[0].idx,
+			rc_send_low_basicrate(&info->control.rates[0],
 					      txrc->bss_conf->basic_rates,
 					      sband);
 
-- 
2.20.1

[PATCH v3 17/22] mac80211: avoid rate init for S1G band

[Thomas Pedersen]

minstrel_ht is confused by the lack of sband->bitrates,
and S1G will likely require a unique RC algorithm, so
avoid rate init for now if STA is on the S1G band.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/mac80211/rate.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 63266d73c252..0cba7fed28cf 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -51,6 +51,12 @@ void rate_control_rate_init(struct sta_info *sta)
 
 	sband = local->hw.wiphy->bands[chanctx_conf->def.chan->band];
 
+	/* TODO: check for minstrel_s1g ? */
+	if (sband->band == NL80211_BAND_S1GHZ) {
+		rcu_read_unlock();
+		return;
+	}
+
 	spin_lock_bh(&sta->rate_ctrl_lock);
 	ref->ops->rate_init(ref->priv, sband, &chanctx_conf->def, ista,
 			    priv_sta);
-- 
2.20.1

[PATCH v3 18/22] mac80211: receive and process S1G beacons

[Thomas Pedersen]

S1G beacons are 802.11 Extension Frames, so the fixed
header part differs from regular beacons.

Add a handler to process S1G beacons and abstract out the
fetching of BSSID and element start locations in the
beacon body handler.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 net/mac80211/ieee80211_i.h |  4 ++
 net/mac80211/iface.c       |  5 +++
 net/mac80211/mlme.c        | 87 +++++++++++++++++++++++++++++---------
 net/mac80211/rx.c          | 84 ++++++++++++++++--------------------
 net/mac80211/util.c        | 52 +++++++++++++++++++++++
 5 files changed, 164 insertions(+), 68 deletions(-)

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index cf78e356b25d..9847cfa0e08c 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1649,6 +1649,8 @@ int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 				  struct sk_buff *skb);
+void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
+				 struct sk_buff *skb);
 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
@@ -2294,6 +2296,8 @@ void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,
 				      const u8 *peer, u16 reason);
 const char *ieee80211_get_reason_code_string(u16 reason_code);
 __le16 ieee80211_encode_usf(int val);
+u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
+			enum nl80211_iftype type);
 
 extern const struct ethtool_ops ieee80211_ethtool_ops;
 
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 9740ae8fa697..1369f6e575d7 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1379,6 +1379,11 @@ static void ieee80211_iface_work(struct work_struct *work)
 				WARN_ON(1);
 				break;
 			}
+		} else if (ieee80211_is_ext(mgmt->frame_control)) {
+			if (sdata->vif.type == NL80211_IFTYPE_STATION)
+				ieee80211_sta_rx_queued_ext(sdata, skb);
+			else
+				WARN_ON(1);
 		} else if (ieee80211_is_data_qos(mgmt->frame_control)) {
 			struct ieee80211_hdr *hdr = (void *)mgmt;
 			/*
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 6a62a221b89e..9a26ef99cef9 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1604,6 +1604,9 @@ static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
 	int new_ap_level;
 	__le16 capab = mgmt->u.probe_resp.capab_info;
 
+	if (ieee80211_is_s1g_beacon(mgmt->frame_control))
+		return 0;	/* TODO */
+
 	if (country_ie &&
 	    (capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) ||
 	     capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
@@ -2450,7 +2453,8 @@ void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
 	 * data idle periods for sending the periodic probe request to the
 	 * AP we're connected to.
 	 */
-	if (is_multicast_ether_addr(hdr->addr1))
+	if (is_multicast_ether_addr(hdr->addr1) ||
+	    ieee80211_is_s1g_beacon(hdr->frame_control))
 		return;
 
 	ieee80211_sta_reset_conn_monitor(sdata);
@@ -3919,12 +3923,13 @@ static bool ieee80211_rx_our_beacon(const u8 *tx_bssid,
 	return ether_addr_equal(tx_bssid, bss->transmitted_bss->bssid);
 }
 
-static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
-				     struct ieee80211_mgmt *mgmt, size_t len,
-				     struct ieee80211_rx_status *rx_status)
+static void ieee80211_rx_beacon(struct ieee80211_sub_if_data *sdata,
+				struct ieee80211_hdr *hdr, size_t len,
+				struct ieee80211_rx_status *rx_status)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 	struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
+	struct ieee80211_mgmt *mgmt = (void *) hdr;
 	size_t baselen;
 	struct ieee802_11_elems elems;
 	struct ieee80211_local *local = sdata->local;
@@ -3934,14 +3939,24 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	u32 changed = 0;
 	bool erp_valid;
 	u8 erp_value = 0;
-	u32 ncrc;
-	u8 *bssid;
+	u32 ncrc = 0;
+	u8 *bssid, *variable = mgmt->u.beacon.variable;
 	u8 deauth_buf[IEEE80211_DEAUTH_FRAME_LEN];
 
 	sdata_assert_lock(sdata);
 
 	/* Process beacon from the current BSS */
-	baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
+	bssid = ieee80211_get_bssid(hdr, len, sdata->vif.type);
+	if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
+		struct ieee80211_ext *ext = (void *) mgmt;
+
+		if (ieee80211_is_s1g_short_beacon(ext->frame_control))
+			variable = ext->u.s1g_short_beacon.variable;
+		else
+			variable = ext->u.s1g_beacon.variable;
+	}
+
+	baselen = (u8 *) variable - (u8 *) mgmt;
 	if (baselen > len)
 		return;
 
@@ -3961,10 +3976,10 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	rcu_read_unlock();
 
 	if (ifmgd->assoc_data && ifmgd->assoc_data->need_beacon &&
-	    ieee80211_rx_our_beacon(mgmt->bssid, ifmgd->assoc_data->bss)) {
-		ieee802_11_parse_elems(mgmt->u.beacon.variable,
+	    ieee80211_rx_our_beacon(bssid, ifmgd->assoc_data->bss)) {
+		ieee802_11_parse_elems(variable,
 				       len - baselen, false, &elems,
-				       mgmt->bssid,
+				       bssid,
 				       ifmgd->assoc_data->bss->bssid);
 
 		ieee80211_rx_bss_info(sdata, mgmt, len, rx_status);
@@ -3997,7 +4012,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (!ifmgd->associated ||
-	    !ieee80211_rx_our_beacon(mgmt->bssid,  ifmgd->associated))
+	    !ieee80211_rx_our_beacon(bssid,  ifmgd->associated))
 		return;
 	bssid = ifmgd->associated->bssid;
 
@@ -4017,8 +4032,14 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	 */
 	ieee80211_sta_reset_beacon_monitor(sdata);
 
-	ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
-	ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
+	/* TODO: CRC urrently not calculated on S1G Beacon Compatibility
+	 * element (which carries the beacon interval). Don't forget to add a
+	 * bit to care_about_ies[] above if mac80211 is interested in a
+	 * changing S1G element.
+	 */
+	if (!ieee80211_is_s1g_beacon(hdr->frame_control))
+		ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
+	ncrc = ieee802_11_parse_elems_crc(variable,
 					  len - baselen, false, &elems,
 					  care_about_ies, ncrc,
 					  mgmt->bssid, bssid);
@@ -4052,7 +4073,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 		struct ieee80211_p2p_noa_attr noa = {};
 		int ret;
 
-		ret = cfg80211_get_p2p_attr(mgmt->u.beacon.variable,
+		ret = cfg80211_get_p2p_attr(variable,
 					    len - baselen,
 					    IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
 					    (u8 *) &noa, sizeof(noa));
@@ -4088,7 +4109,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	 * the driver will use them. The synchronized view is currently
 	 * guaranteed only in certain callbacks.
 	 */
-	if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY)) {
+	if (ieee80211_hw_check(&local->hw, TIMING_BEACON_ONLY) &&
+	    !ieee80211_is_s1g_beacon(hdr->frame_control)) {
 		sdata->vif.bss_conf.sync_tsf =
 			le64_to_cpu(mgmt->u.beacon.timestamp);
 		sdata->vif.bss_conf.sync_device_ts =
@@ -4096,7 +4118,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 		sdata->vif.bss_conf.sync_dtim_count = elems.dtim_count;
 	}
 
-	if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
+	if ((ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) ||
+	    ieee80211_is_s1g_short_beacon(mgmt->frame_control))
 		return;
 	ifmgd->beacon_crc = ncrc;
 	ifmgd->beacon_crc_valid = true;
@@ -4137,9 +4160,12 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	} else {
 		erp_valid = false;
 	}
-	changed |= ieee80211_handle_bss_capability(sdata,
-			le16_to_cpu(mgmt->u.beacon.capab_info),
-			erp_valid, erp_value);
+
+	if (!ieee80211_is_s1g_beacon(hdr->frame_control)) {
+		changed |= ieee80211_handle_bss_capability(sdata,
+				le16_to_cpu(mgmt->u.beacon.capab_info),
+				erp_valid, erp_value);
+	}
 
 	mutex_lock(&local->sta_mtx);
 	sta = sta_info_get(sdata, bssid);
@@ -4177,6 +4203,26 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
 	ieee80211_bss_info_change_notify(sdata, changed);
 }
 
+void ieee80211_sta_rx_queued_ext(struct ieee80211_sub_if_data *sdata,
+				 struct sk_buff *skb)
+{
+	struct ieee80211_rx_status *rx_status;
+	struct ieee80211_hdr *hdr;
+	u16 fc;
+
+	rx_status = (struct ieee80211_rx_status *) skb->cb;
+	hdr = (struct ieee80211_hdr *) skb->data;
+	fc = le16_to_cpu(hdr->frame_control);
+
+	sdata_lock(sdata);
+	switch (fc & IEEE80211_FCTL_STYPE) {
+	case IEEE80211_STYPE_S1G_BEACON:
+		ieee80211_rx_beacon(sdata, hdr, skb->len, rx_status);
+		break;
+	}
+	sdata_unlock(sdata);
+}
+
 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 				  struct sk_buff *skb)
 {
@@ -4194,7 +4240,8 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 
 	switch (fc & IEEE80211_FCTL_STYPE) {
 	case IEEE80211_STYPE_BEACON:
-		ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, rx_status);
+		ieee80211_rx_beacon(sdata, (struct ieee80211_hdr *) mgmt,
+				    skb->len, rx_status);
 		break;
 	case IEEE80211_STYPE_PROBE_RESP:
 		ieee80211_rx_mgmt_probe_resp(sdata, skb);
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 5b92f56682e2..e1291898bde8 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -42,51 +42,6 @@ static inline void ieee80211_rx_stats(struct net_device *dev, u32 len)
 	u64_stats_update_end(&tstats->syncp);
 }
 
-static u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
-			       enum nl80211_iftype type)
-{
-	__le16 fc = hdr->frame_control;
-
-	if (ieee80211_is_data(fc)) {
-		if (len < 24) /* drop incorrect hdr len (data) */
-			return NULL;
-
-		if (ieee80211_has_a4(fc))
-			return NULL;
-		if (ieee80211_has_tods(fc))
-			return hdr->addr1;
-		if (ieee80211_has_fromds(fc))
-			return hdr->addr2;
-
-		return hdr->addr3;
-	}
-
-	if (ieee80211_is_mgmt(fc)) {
-		if (len < 24) /* drop incorrect hdr len (mgmt) */
-			return NULL;
-		return hdr->addr3;
-	}
-
-	if (ieee80211_is_ctl(fc)) {
-		if (ieee80211_is_pspoll(fc))
-			return hdr->addr1;
-
-		if (ieee80211_is_back_req(fc)) {
-			switch (type) {
-			case NL80211_IFTYPE_STATION:
-				return hdr->addr2;
-			case NL80211_IFTYPE_AP:
-			case NL80211_IFTYPE_AP_VLAN:
-				return hdr->addr1;
-			default:
-				break; /* fall through to the return */
-			}
-		}
-	}
-
-	return NULL;
-}
-
 /*
  * monitor mode reception
  *
@@ -1801,7 +1756,8 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 		}
 	} else if (rx->sdata->vif.type == NL80211_IFTYPE_OCB) {
 		sta->rx_stats.last_rx = jiffies;
-	} else if (!is_multicast_ether_addr(hdr->addr1)) {
+	} else if (!ieee80211_is_s1g_beacon(hdr->frame_control) &&
+		   is_multicast_ether_addr(hdr->addr1)) {
 		/*
 		 * Mesh beacons will update last_rx when if they are found to
 		 * match the current local configuration when processed.
@@ -1839,6 +1795,9 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
 		}
 	}
 
+	if (ieee80211_is_s1g_beacon(hdr->frame_control))
+		return RX_CONTINUE;
+
 	/*
 	 * Change STA power saving mode only at the end of a frame
 	 * exchange sequence, and only for a data or management
@@ -1949,6 +1908,9 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 	__le16 fc;
 	const struct ieee80211_cipher_scheme *cs = NULL;
 
+	if (ieee80211_is_ext(hdr->frame_control))
+		return RX_CONTINUE;
+
 	/*
 	 * Key selection 101
 	 *
@@ -2257,7 +2219,7 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
 	hdr = (struct ieee80211_hdr *)rx->skb->data;
 	fc = hdr->frame_control;
 
-	if (ieee80211_is_ctl(fc))
+	if (ieee80211_is_ctl(fc) || ieee80211_is_ext(fc))
 		return RX_CONTINUE;
 
 	sc = le16_to_cpu(hdr->seq_ctrl);
@@ -3131,6 +3093,9 @@ ieee80211_rx_h_mgmt_check(struct ieee80211_rx_data *rx)
 	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) rx->skb->data;
 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
 
+	if (ieee80211_is_s1g_beacon(mgmt->frame_control))
+		return RX_CONTINUE;
+
 	/*
 	 * From here on, look only at management frames.
 	 * Data and control frames are already handled,
@@ -3597,6 +3562,27 @@ ieee80211_rx_h_action_return(struct ieee80211_rx_data *rx)
 	return RX_QUEUED;
 }
 
+static ieee80211_rx_result debug_noinline
+ieee80211_rx_h_ext(struct ieee80211_rx_data *rx)
+{
+	struct ieee80211_sub_if_data *sdata = rx->sdata;
+	struct ieee80211_hdr *hdr = (void *)rx->skb->data;
+
+	if (!ieee80211_is_ext(hdr->frame_control))
+		return RX_CONTINUE;
+
+	if (sdata->vif.type != NL80211_IFTYPE_STATION)
+		return RX_DROP_MONITOR;
+
+	/* for now only beacons are ext, so queue them */
+	skb_queue_tail(&sdata->skb_queue, rx->skb);
+	ieee80211_queue_work(&rx->local->hw, &sdata->work);
+	if (rx->sta)
+		rx->sta->rx_stats.packets++;
+
+	return RX_QUEUED;
+}
+
 static ieee80211_rx_result debug_noinline
 ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
 {
@@ -3816,6 +3802,7 @@ static void ieee80211_rx_handlers(struct ieee80211_rx_data *rx,
 		CALL_RXH(ieee80211_rx_h_userspace_mgmt);
 		CALL_RXH(ieee80211_rx_h_action_post_userspace);
 		CALL_RXH(ieee80211_rx_h_action_return);
+		CALL_RXH(ieee80211_rx_h_ext);
 		CALL_RXH(ieee80211_rx_h_mgmt);
 
  rxh_next:
@@ -3982,7 +3969,8 @@ static bool ieee80211_accept_frame(struct ieee80211_rx_data *rx)
 	struct ieee80211_hdr *hdr = (void *)skb->data;
 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
 	u8 *bssid = ieee80211_get_bssid(hdr, skb->len, sdata->vif.type);
-	bool multicast = is_multicast_ether_addr(hdr->addr1);
+	bool multicast = is_multicast_ether_addr(hdr->addr1) ||
+			 ieee80211_is_s1g_beacon(hdr->frame_control);
 
 	switch (sdata->vif.type) {
 	case NL80211_IFTYPE_STATION:
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 57c6f8bd2bdf..31845e392759 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -45,6 +45,58 @@ struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy)
 }
 EXPORT_SYMBOL(wiphy_to_ieee80211_hw);
 
+u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
+			enum nl80211_iftype type)
+{
+	__le16 fc = hdr->frame_control;
+
+	if (ieee80211_is_data(fc)) {
+		if (len < 24) /* drop incorrect hdr len (data) */
+			return NULL;
+
+		if (ieee80211_has_a4(fc))
+			return NULL;
+		if (ieee80211_has_tods(fc))
+			return hdr->addr1;
+		if (ieee80211_has_fromds(fc))
+			return hdr->addr2;
+
+		return hdr->addr3;
+	}
+
+	if (ieee80211_is_s1g_beacon(fc)) {
+		struct ieee80211_ext *ext = (void *) hdr;
+
+		return ext->u.s1g_beacon.sa;
+	}
+
+	if (ieee80211_is_mgmt(fc)) {
+		if (len < 24) /* drop incorrect hdr len (mgmt) */
+			return NULL;
+		return hdr->addr3;
+	}
+
+	if (ieee80211_is_ctl(fc)) {
+		if (ieee80211_is_pspoll(fc))
+			return hdr->addr1;
+
+		if (ieee80211_is_back_req(fc)) {
+			switch (type) {
+			case NL80211_IFTYPE_STATION:
+				return hdr->addr2;
+			case NL80211_IFTYPE_AP:
+			case NL80211_IFTYPE_AP_VLAN:
+				return hdr->addr1;
+			default:
+				break; /* fall through to the return */
+			}
+		}
+	}
+
+	return NULL;
+}
+EXPORT_SYMBOL(ieee80211_get_bssid);
+
 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx)
 {
 	struct sk_buff *skb;
-- 
2.20.1

[PATCH v3 19/22] mac80211: support S1G association

[Thomas Pedersen]

The changes required for associating in S1G are:

- apply S1G BSS channel info before assoc
- mark all S1G STAs as QoS STAs
- include and parse AID request element
- handle new Association Response format
- don't fail assoc if supported rates element is missing

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/linux/ieee80211.h  | 21 ++++++++++
 include/net/mac80211.h     |  1 +
 net/mac80211/cfg.c         |  2 +
 net/mac80211/ibss.c        |  3 +-
 net/mac80211/ieee80211_i.h |  4 ++
 net/mac80211/mlme.c        | 80 ++++++++++++++++++++++++++++++++------
 net/mac80211/util.c        | 55 ++++++++++++++++++++++++++
 7 files changed, 153 insertions(+), 13 deletions(-)

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index a63ad4b4f973..1634650a44ce 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -987,6 +987,25 @@ enum ieee80211_vht_opmode_bits {
 	IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF	= 0x80,
 };
 
+/**
+ * enum ieee80211_s1g_chanwidth
+ * These are defined in IEEE802.11-2016ah Table 10-20
+ * as BSS Channel Width
+ *
+ * @IEEE80211_S1G_CHANWIDTH_1MHZ: 1MHz operating channel
+ * @IEEE80211_S1G_CHANWIDTH_2MHZ: 2MHz operating channel
+ * @IEEE80211_S1G_CHANWIDTH_4MHZ: 4MHz operating channel
+ * @IEEE80211_S1G_CHANWIDTH_8MHZ: 8MHz operating channel
+ * @IEEE80211_S1G_CHANWIDTH_16MHZ: 16MHz operating channel
+ */
+enum ieee80211_s1g_chanwidth {
+	IEEE80211_S1G_CHANWIDTH_1MHZ = 0,
+	IEEE80211_S1G_CHANWIDTH_2MHZ = 1,
+	IEEE80211_S1G_CHANWIDTH_4MHZ = 3,
+	IEEE80211_S1G_CHANWIDTH_8MHZ = 7,
+	IEEE80211_S1G_CHANWIDTH_16MHZ = 15,
+};
+
 #define WLAN_SA_QUERY_TR_ID_LEN 2
 #define WLAN_MEMBERSHIP_LEN 8
 #define WLAN_USER_POSITION_LEN 16
@@ -2854,6 +2873,8 @@ enum ieee80211_eid {
 
 	WLAN_EID_REDUCED_NEIGHBOR_REPORT = 201,
 
+	WLAN_EID_AID_REQUEST = 210,
+	WLAN_EID_AID_RESPONSE = 211,
 	WLAN_EID_S1G_BCN_COMPAT = 213,
 	WLAN_EID_S1G_SHORT_BCN_INTERVAL = 214,
 	WLAN_EID_S1G_CAPABILITIES = 217,
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 9ea743afb986..bc78edf1c994 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -674,6 +674,7 @@ struct ieee80211_bss_conf {
 	} he_oper;
 	struct ieee80211_he_obss_pd he_obss_pd;
 	struct cfg80211_he_bss_color he_bss_color;
+	bool s1g;
 };
 
 /**
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index b4e39e31a985..086e51a78394 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1071,6 +1071,8 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 	       sizeof(struct ieee80211_he_obss_pd));
 	memcpy(&sdata->vif.bss_conf.he_bss_color, &params->he_bss_color,
 	       sizeof(struct ieee80211_he_bss_color));
+	sdata->vif.bss_conf.s1g = params->chandef.chan->band ==
+				  NL80211_BAND_S1GHZ;
 
 	sdata->vif.bss_conf.ssid_len = params->ssid_len;
 	if (params->ssid_len)
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index c0963969a465..1f552f374e97 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -1037,7 +1037,8 @@ static void ieee80211_update_sta_info(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (sta && !sta->sta.wme &&
-	    elems->wmm_info && local->hw.queues >= IEEE80211_NUM_ACS) {
+	    (elems->wmm_info || elems->s1g_capab) &&
+	    local->hw.queues >= IEEE80211_NUM_ACS) {
 		sta->sta.wme = true;
 		ieee80211_check_fast_xmit(sta);
 	}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 9847cfa0e08c..60786e4b9f5f 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1531,6 +1531,7 @@ struct ieee802_11_elems {
 	const struct ieee80211_s1g_oper_ie *s1g_oper;
 	const u8 *s1g_tsbtt;
 	const struct ieee80211_s1g_bcn_compat_ie *s1g_bcn_compat;
+	const struct ieee80211_aid_response_ie *aid_resp;
 
 	/* length of them, respectively */
 	u8 ext_capab_len;
@@ -2206,6 +2207,7 @@ int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
 u8 *ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
 			       struct ieee80211_sta_s1g_cap *caps, u8 *buf);
+u8 *ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, u8 *buf);
 
 /* channel management */
 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper,
@@ -2217,6 +2219,8 @@ bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, u32 vht_cap_info,
 bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
 				    const struct ieee80211_he_operation *he_oper,
 				    struct cfg80211_chan_def *chandef);
+bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
+				struct cfg80211_chan_def *chandef);
 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
 
 int __must_check
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 9a26ef99cef9..2476d4a9596c 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -149,6 +149,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 			     const struct ieee80211_ht_operation *ht_oper,
 			     const struct ieee80211_vht_operation *vht_oper,
 			     const struct ieee80211_he_operation *he_oper,
+			     const struct ieee80211_s1g_oper_ie *s1g_oper,
 			     struct cfg80211_chan_def *chandef, bool tracking)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
@@ -176,6 +177,15 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 	memcpy(&sta_ht_cap, &sband->ht_cap, sizeof(sta_ht_cap));
 	ieee80211_apply_htcap_overrides(sdata, &sta_ht_cap);
 
+	if (s1g_oper && sband->band == NL80211_BAND_S1GHZ) {
+		ieee80211_chandef_s1g_oper(s1g_oper, chandef);
+		ret = IEEE80211_STA_DISABLE_HT | IEEE80211_STA_DISABLE_40MHZ |
+		      IEEE80211_STA_DISABLE_VHT |
+		      IEEE80211_STA_DISABLE_80P80MHZ |
+		      IEEE80211_STA_DISABLE_160MHZ;
+		goto out;
+	}
+
 	if (!ht_oper || !sta_ht_cap.ht_supported) {
 		ret = IEEE80211_STA_DISABLE_HT |
 		      IEEE80211_STA_DISABLE_VHT |
@@ -347,6 +357,7 @@ static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
 			       const struct ieee80211_ht_operation *ht_oper,
 			       const struct ieee80211_vht_operation *vht_oper,
 			       const struct ieee80211_he_operation *he_oper,
+			       const struct ieee80211_s1g_oper_ie *s1g_oper,
 			       const u8 *bssid, u32 *changed)
 {
 	struct ieee80211_local *local = sdata->local;
@@ -393,7 +404,7 @@ static int ieee80211_config_bw(struct ieee80211_sub_if_data *sdata,
 	/* calculate new channel (type) based on HT/VHT/HE operation IEs */
 	flags = ieee80211_determine_chantype(sdata, sband, chan, vht_cap_info,
 					     ht_oper, vht_oper, he_oper,
-					     &chandef, true);
+					     s1g_oper, &chandef, true);
 
 	/*
 	 * Downgrade the new channel if we associated with restricted
@@ -812,6 +823,9 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 	*pos++ = assoc_data->ssid_len;
 	memcpy(pos, assoc_data->ssid, assoc_data->ssid_len);
 
+	if (bss->s1g)
+		goto skip_rates;
+
 	/* add all rates which were marked to be used above */
 	supp_rates_len = rates_len;
 	if (supp_rates_len > 8)
@@ -847,6 +861,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 		}
 	}
 
+skip_rates:
 	if (capab & WLAN_CAPABILITY_SPECTRUM_MGMT ||
 	    capab & WLAN_CAPABILITY_RADIO_MEASURE) {
 		pos = skb_put(skb, 4);
@@ -1021,9 +1036,11 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata)
 		pos = ieee80211_add_wmm_info_ie(skb_put(skb, 9), qos_info);
 	}
 
-	if (sband->band == NL80211_BAND_S1GHZ)
+	if (sband->band == NL80211_BAND_S1GHZ) {
+		pos = ieee80211_add_aid_request_ie(sdata, skb_put(skb, 3));
 		pos = ieee80211_add_s1g_capab_ie(sdata, &sband->s1g_cap,
 						 skb_put(skb, 17));
+	}
 
 	/* add any remaining custom (i.e. vendor specific here) IEs */
 	if (assoc_data->ie_len) {
@@ -3270,6 +3287,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 				    struct ieee802_11_elems *elems)
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+	struct ieee80211_bss *bss = (void *)cbss->priv;
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_supported_band *sband;
 	struct sta_info *sta;
@@ -3279,13 +3297,24 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_mgd_assoc_data *assoc_data = ifmgd->assoc_data;
 	bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
 	u32 changed = 0;
+	u8 *pos;
 	int err;
 	bool ret;
 
 	/* AssocResp and ReassocResp have identical structure */
 
+	pos = mgmt->u.assoc_resp.variable;
 	aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
+	if (bss->s1g) {
+		pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
+		aid = 0; /* TODO */
+	}
 	capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
+	ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, elems,
+			       mgmt->bssid, assoc_data->bss->bssid);
+
+	if (elems->aid_resp)
+		aid = le16_to_cpu(elems->aid_resp->aid);
 
 	/*
 	 * The 5 MSB of the AID field are reserved
@@ -3302,7 +3331,7 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 		ifmgd->broken_ap = true;
 	}
 
-	if (!elems->supp_rates) {
+	if (!bss->s1g && !elems->supp_rates) {
 		sdata_info(sdata, "no SuppRates element in AssocResp\n");
 		return false;
 	}
@@ -3544,7 +3573,8 @@ static bool ieee80211_assoc_success(struct ieee80211_sub_if_data *sdata,
 		sta->sta.mfp = false;
 	}
 
-	sta->sta.wme = elems->wmm_param && local->hw.queues >= IEEE80211_NUM_ACS;
+	sta->sta.wme = (elems->wmm_param || elems->s1g_capab) &&
+		       local->hw.queues >= IEEE80211_NUM_ACS;
 
 	err = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 	if (!err && !(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
@@ -3636,7 +3666,8 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 	int ac, uapsd_queues = -1;
 	u8 *pos;
 	bool reassoc;
-	struct cfg80211_bss *bss;
+	struct cfg80211_bss *cbss;
+	struct ieee80211_bss *bss;
 	struct ieee80211_event event = {
 		.type = MLME_EVENT,
 		.u.mlme.data = ASSOC_EVENT,
@@ -3646,9 +3677,13 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 
 	if (!assoc_data)
 		return;
+
 	if (!ether_addr_equal(assoc_data->bss->bssid, mgmt->bssid))
 		return;
 
+	cbss = assoc_data->bss;
+	bss = (void *) cbss->priv;
+
 	/*
 	 * AssocResp and ReassocResp have identical structure, so process both
 	 * of them in this function.
@@ -3660,7 +3695,12 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 	reassoc = ieee80211_is_reassoc_resp(mgmt->frame_control);
 	capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
 	status_code = le16_to_cpu(mgmt->u.assoc_resp.status_code);
+	pos = mgmt->u.assoc_resp.variable;
 	aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
+	if (bss->s1g) {
+		pos = (u8 *) mgmt->u.s1g_assoc_resp.variable;
+		aid = 0; /* TODO */
+	}
 
 	sdata_info(sdata,
 		   "RX %sssocResp from %pM (capab=0x%x status=%d aid=%d)\n",
@@ -3671,7 +3711,6 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 	    fils_decrypt_assoc_resp(sdata, (u8 *)mgmt, &len, assoc_data) < 0)
 		return;
 
-	pos = mgmt->u.assoc_resp.variable;
 	ieee802_11_parse_elems(pos, len - (pos - (u8 *)mgmt), false, &elems,
 			       mgmt->bssid, assoc_data->bss->bssid);
 
@@ -3691,8 +3730,6 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 		return;
 	}
 
-	bss = assoc_data->bss;
-
 	if (status_code != WLAN_STATUS_SUCCESS) {
 		sdata_info(sdata, "%pM denied association (code=%d)\n",
 			   mgmt->sa, status_code);
@@ -3701,10 +3738,10 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 		event.u.mlme.reason = status_code;
 		drv_event_callback(sdata->local, sdata, &event);
 	} else {
-		if (!ieee80211_assoc_success(sdata, bss, mgmt, len, &elems)) {
+		if (!ieee80211_assoc_success(sdata, cbss, mgmt, len, &elems)) {
 			/* oops -- internal error -- send timeout for now */
 			ieee80211_destroy_assoc_data(sdata, false, false);
-			cfg80211_assoc_timeout(sdata->dev, bss);
+			cfg80211_assoc_timeout(sdata->dev, cbss);
 			return;
 		}
 		event.u.mlme.status = MLME_SUCCESS;
@@ -3725,7 +3762,7 @@ static void ieee80211_rx_mgmt_assoc_resp(struct ieee80211_sub_if_data *sdata,
 				uapsd_queues |= ieee80211_ac_to_qos_mask[ac];
 	}
 
-	cfg80211_rx_assoc_resp(sdata->dev, bss, (u8 *)mgmt, len, uapsd_queues,
+	cfg80211_rx_assoc_resp(sdata->dev, cbss, (u8 *)mgmt, len, uapsd_queues,
 			       ifmgd->assoc_req_ies, ifmgd->assoc_req_ies_len);
 }
 
@@ -4175,7 +4212,7 @@ static void ieee80211_rx_beacon(struct ieee80211_sub_if_data *sdata,
 	if (ieee80211_config_bw(sdata, sta, elems.ht_cap_elem,
 				elems.vht_cap_elem, elems.ht_operation,
 				elems.vht_operation, elems.he_operation,
-				bssid, &changed)) {
+				elems.s1g_oper, bssid, &changed)) {
 		mutex_unlock(&local->sta_mtx);
 		sdata_info(sdata,
 			   "failed to follow AP %pM bandwidth change, disconnect\n",
@@ -4912,6 +4949,7 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
 	const struct ieee80211_ht_operation *ht_oper = NULL;
 	const struct ieee80211_vht_operation *vht_oper = NULL;
 	const struct ieee80211_he_operation *he_oper = NULL;
+	const struct ieee80211_s1g_oper_ie *s1g_oper = NULL;
 	struct ieee80211_supported_band *sband;
 	struct cfg80211_chan_def chandef;
 	bool is_6ghz = cbss->channel->band == NL80211_BAND_6GHZ;
@@ -5014,10 +5052,23 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata,
 	if (!have_80mhz)
 		ifmgd->flags |= IEEE80211_STA_DISABLE_VHT;
 
+	if (sband->band == NL80211_BAND_S1GHZ) {
+		const u8 *s1g_oper_ie;
+
+		s1g_oper_ie = ieee80211_bss_get_ie(cbss,
+						   WLAN_EID_S1G_OPERATION);
+		if (s1g_oper_ie && s1g_oper_ie[1] >= sizeof(*s1g_oper))
+			s1g_oper = (void *)(s1g_oper_ie + 2);
+		else
+			sdata_info(sdata,
+				   "AP missing S1G operation element?\n");
+	}
+
 	ifmgd->flags |= ieee80211_determine_chantype(sdata, sband,
 						     cbss->channel,
 						     bss->vht_cap_info,
 						     ht_oper, vht_oper, he_oper,
+						     s1g_oper,
 						     &chandef, false);
 
 	sdata->needed_rx_chains = min(ieee80211_ht_vht_rx_chains(sdata, cbss),
@@ -5144,6 +5195,10 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
 		const struct cfg80211_bss_ies *ies;
 		int shift = ieee80211_vif_get_shift(&sdata->vif);
 
+		/* TODO: S1G Basic Rate Set is expressed elsewhere */
+		if (cbss->channel->band == NL80211_BAND_S1GHZ)
+			goto skip_rates;
+
 		ieee80211_get_rates(sband, bss->supp_rates,
 				    bss->supp_rates_len,
 				    &rates, &basic_rates,
@@ -5188,6 +5243,7 @@ static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
 		else
 			sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
 
+skip_rates:
 		memcpy(ifmgd->bssid, cbss->bssid, ETH_ALEN);
 
 		/* set timing information */
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 31845e392759..46cff63fea12 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1058,6 +1058,7 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
 		case WLAN_EID_S1G_BCN_COMPAT:
 		case WLAN_EID_S1G_CAPABILITIES:
 		case WLAN_EID_S1G_OPERATION:
+		case WLAN_EID_AID_RESPONSE:
 		case WLAN_EID_S1G_SHORT_BCN_INTERVAL:
 		/*
 		 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
@@ -1368,6 +1369,12 @@ _ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
 			else
 				elem_parse_failed = true;
 			break;
+		case WLAN_EID_AID_RESPONSE:
+			if (elen == sizeof(struct ieee80211_aid_response_ie))
+				elems->aid_resp = (void *)pos;
+			else
+				elem_parse_failed = true;
+			break;
 		default:
 			break;
 		}
@@ -3450,6 +3457,42 @@ bool ieee80211_chandef_he_6ghz_oper(struct ieee80211_sub_if_data *sdata,
 
 	*chandef = he_chandef;
 
+	return false;
+}
+
+bool ieee80211_chandef_s1g_oper(const struct ieee80211_s1g_oper_ie *oper,
+				struct cfg80211_chan_def *chandef)
+{
+	u32 oper_freq;
+
+	if (!oper)
+		return false;
+
+	switch (FIELD_GET(S1G_OPER_CH_WIDTH_OPER, oper->ch_width)) {
+	case IEEE80211_S1G_CHANWIDTH_1MHZ:
+		chandef->width = NL80211_CHAN_WIDTH_1;
+		break;
+	case IEEE80211_S1G_CHANWIDTH_2MHZ:
+		chandef->width = NL80211_CHAN_WIDTH_2;
+		break;
+	case IEEE80211_S1G_CHANWIDTH_4MHZ:
+		chandef->width = NL80211_CHAN_WIDTH_4;
+		break;
+	case IEEE80211_S1G_CHANWIDTH_8MHZ:
+		chandef->width = NL80211_CHAN_WIDTH_8;
+		break;
+	case IEEE80211_S1G_CHANWIDTH_16MHZ:
+		chandef->width = NL80211_CHAN_WIDTH_16;
+		break;
+	default:
+		return false;
+	}
+
+	oper_freq = ieee80211_channel_to_freq_khz(oper->oper_ch,
+						  NL80211_BAND_S1GHZ);
+	chandef->center_freq1 = KHZ_TO_MHZ(oper_freq);
+	chandef->freq1_offset = oper_freq % 1000;
+
 	return true;
 }
 
@@ -4356,6 +4399,18 @@ int ieee80211_max_num_channels(struct ieee80211_local *local)
 	return max_num_different_channels;
 }
 
+u8 *ieee80211_add_aid_request_ie(struct ieee80211_sub_if_data *sdata, u8 *buf)
+{
+	u8 *pos = buf;
+
+	*pos++ = WLAN_EID_AID_REQUEST;
+	*pos++ = 1;
+
+	*pos++ = 0;
+
+	return pos;
+}
+
 u8 *ieee80211_add_s1g_capab_ie(struct ieee80211_sub_if_data *sdata,
 			       struct ieee80211_sta_s1g_cap *own_cap, u8 *buf)
 {
-- 
2.20.1

[PATCH v3 20/22] nl80211: include frequency offset in survey info

[Thomas Pedersen]

Recently channels gained a potential frequency offset, so
include this in the per-channel survey info.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
 include/uapi/linux/nl80211.h | 2 ++
 net/wireless/nl80211.c       | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 70076492ebc9..dd5591794e48 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -4085,6 +4085,7 @@ enum nl80211_user_reg_hint_type {
  *	receiving frames destined to the local BSS
  * @NL80211_SURVEY_INFO_MAX: highest survey info attribute number
  *	currently defined
+ * @NL80211_SURVEY_INFO_FREQUENCY_OFFSET: center frequency offset in KHz
  * @__NL80211_SURVEY_INFO_AFTER_LAST: internal use
  */
 enum nl80211_survey_info {
@@ -4100,6 +4101,7 @@ enum nl80211_survey_info {
 	NL80211_SURVEY_INFO_TIME_SCAN,
 	NL80211_SURVEY_INFO_PAD,
 	NL80211_SURVEY_INFO_TIME_BSS_RX,
+	NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
 
 	/* keep last */
 	__NL80211_SURVEY_INFO_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 493813177df2..daf403bfa168 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -9224,6 +9224,11 @@ static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
 			survey->channel->center_freq))
 		goto nla_put_failure;
 
+	if (survey->channel &&
+	    nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
+			survey->channel->freq_offset))
+		goto nla_put_failure;
+
 	if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
 	    nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
 		goto nla_put_failure;
-- 
2.20.1

[PATCH v3 21/22] mac80211_hwsim: fix TSF timestamp write to S1G beacon

[Thomas Pedersen]

mac80211_hwsim was corrupting the S1G beacon because the
timestamp location (and size) does not match the
management beacon.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>

---
v3:
  - fix this before claiming S1G support
  Reported-by: kernel test robot <rong.a.chen@intel.com>
---
 drivers/net/wireless/mac80211_hwsim.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index dce3bc9c9f84..3daf5b399ebf 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1687,9 +1687,19 @@ static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 	mgmt = (struct ieee80211_mgmt *) skb->data;
 	/* fake header transmission time */
 	data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
-	mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
-					       data->tsf_offset +
-					       24 * 8 * 10 / txrate->bitrate);
+	if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
+		struct ieee80211_ext *ext = (void *) mgmt;
+
+		ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
+							  data->tsf_offset +
+							  10 * 8 * 10 /
+							  txrate->bitrate);
+	} else {
+		mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
+						       data->tsf_offset +
+						       24 * 8 * 10 /
+						       txrate->bitrate);
+	}
 
 	mac80211_hwsim_tx_frame(hw, skb,
 				rcu_dereference(vif->chanctx_conf)->def.chan);
-- 
2.20.1

[PATCH v3 22/22] mac80211_hwsim: indicate support for S1G

[Thomas Pedersen]

Advertise S1G Capabilities and channels to mac80211.

Requires a few fixups to account for missing
sband->bitrates, and a custom regulatory db to actually
enable the S1G channels.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>

---
v2:
 - split out changes to ieee80211.h in a separate commit
   and use GENMASK + FIELD_GET (Kalle)
---
 drivers/net/wireless/mac80211_hwsim.c | 81 ++++++++++++++++++++++++---
 1 file changed, 73 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 3daf5b399ebf..6b460cc27e6a 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -377,6 +377,49 @@ static const struct ieee80211_channel hwsim_channels_5ghz[] = {
 	CHAN5G(5925), /* Channel 185 */
 };
 
+#define NUM_S1G_CHANS_US 51
+static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
+
+static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
+	.s1g = true,
+	.cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
+		 0,
+		 0,
+		 S1G_CAP3_MAX_MPDU_LEN,
+		 0,
+		 S1G_CAP5_AMPDU,
+		 0,
+		 S1G_CAP7_DUP_1MHZ,
+		 S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
+		 0},
+	.nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
+	/* RX Highest Supported Long GI Data Rate 0:7 */
+		     0,
+	/* RX Highest Supported Long GI Data Rate 0:7 */
+	/* TX S1G MCS Map 0:6 */
+		     0xfa,
+	/* TX S1G MCS Map :7 */
+	/* TX Highest Supported Long GI Data Rate 0:6 */
+		     0x80,
+	/* TX Highest Supported Long GI Data Rate 7:8 */
+	/* Rx Single spatial stream and S1G-MCS Map for 1MHz */
+	/* Tx Single spatial stream and S1G-MCS Map for 1MHz */
+		     0 },
+};
+
+static void hwsim_init_s1g_channels(struct ieee80211_channel *channels)
+{
+	int ch, freq;
+
+	for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
+		freq = 902000 + (ch + 1) * 500;
+		channels[ch].band = NL80211_BAND_S1GHZ;
+		channels[ch].center_freq = KHZ_TO_MHZ(freq);
+		channels[ch].freq_offset = freq % 1000;
+		channels[ch].hw_value = ch + 1;
+	}
+}
+
 static const struct ieee80211_rate hwsim_rates[] = {
 	{ .bitrate = 10 },
 	{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
@@ -505,6 +548,7 @@ struct mac80211_hwsim_data {
 	struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
 	struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
 	struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
+	struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
 	struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
 	struct ieee80211_iface_combination if_combination;
 	struct ieee80211_iface_limit if_limits[3];
@@ -900,12 +944,14 @@ static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 	struct mac80211_hwsim_data *data = hw->priv;
 	struct sk_buff *skb;
 	struct hwsim_radiotap_hdr *hdr;
-	u16 flags;
+	u16 flags, bitrate;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
 	struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
 
-	if (WARN_ON(!txrate))
-		return;
+	if (!txrate)
+		bitrate = 0;
+	else
+		bitrate = txrate->bitrate;
 
 	if (!netif_running(hwsim_mon))
 		return;
@@ -924,10 +970,10 @@ static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
 					  (1 << IEEE80211_RADIOTAP_CHANNEL));
 	hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
 	hdr->rt_flags = 0;
-	hdr->rt_rate = txrate->bitrate / 5;
+	hdr->rt_rate = bitrate / 5;
 	hdr->rt_channel = cpu_to_le16(chan->center_freq);
 	flags = IEEE80211_CHAN_2GHZ;
-	if (txrate->flags & IEEE80211_RATE_ERP_G)
+	if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
 		flags |= IEEE80211_CHAN_OFDM;
 	else
 		flags |= IEEE80211_CHAN_CCK;
@@ -1341,6 +1387,7 @@ static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
 	memset(&rx_status, 0, sizeof(rx_status));
 	rx_status.flag |= RX_FLAG_MACTIME_START;
 	rx_status.freq = chan->center_freq;
+	rx_status.freq_offset = chan->freq_offset ? 1 : 0;
 	rx_status.band = chan->band;
 	if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
 		rx_status.rate_idx =
@@ -1522,14 +1569,18 @@ static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
 		/* fake header transmission time */
 		struct ieee80211_mgmt *mgmt;
 		struct ieee80211_rate *txrate;
+		/* TODO: get MCS */
+		int bitrate = 100;
 		u64 ts;
 
 		mgmt = (struct ieee80211_mgmt *)skb->data;
 		txrate = ieee80211_get_tx_rate(hw, txi);
+		if (txrate)
+			bitrate = txrate->bitrate;
 		ts = mac80211_hwsim_get_tsf_raw();
 		mgmt->u.probe_resp.timestamp =
 			cpu_to_le64(ts + data->tsf_offset +
-				    24 * 8 * 10 / txrate->bitrate);
+				    24 * 8 * 10 / bitrate);
 	}
 
 	mac80211_hwsim_monitor_rx(hw, skb, channel);
@@ -1664,6 +1715,8 @@ static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 	struct ieee80211_rate *txrate;
 	struct ieee80211_mgmt *mgmt;
 	struct sk_buff *skb;
+	/* TODO: get MCS */
+	int bitrate = 100;
 
 	hwsim_check_magic(vif);
 
@@ -1683,6 +1736,8 @@ static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 				       ARRAY_SIZE(info->control.rates));
 
 	txrate = ieee80211_get_tx_rate(hw, info);
+	if (txrate)
+		bitrate = txrate->bitrate;
 
 	mgmt = (struct ieee80211_mgmt *) skb->data;
 	/* fake header transmission time */
@@ -1693,12 +1748,12 @@ static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
 		ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
 							  data->tsf_offset +
 							  10 * 8 * 10 /
-							  txrate->bitrate);
+							  bitrate);
 	} else {
 		mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
 						       data->tsf_offset +
 						       24 * 8 * 10 /
-						       txrate->bitrate);
+						       bitrate);
 	}
 
 	mac80211_hwsim_tx_frame(hw, skb,
@@ -3089,6 +3144,8 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
 		sizeof(hwsim_channels_2ghz));
 	memcpy(data->channels_5ghz, hwsim_channels_5ghz,
 		sizeof(hwsim_channels_5ghz));
+	memcpy(data->channels_s1g, hwsim_channels_s1g,
+	       sizeof(hwsim_channels_s1g));
 	memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
 
 	for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
@@ -3131,6 +3188,12 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
 			sband->vht_cap.vht_mcs.tx_mcs_map =
 				sband->vht_cap.vht_mcs.rx_mcs_map;
 			break;
+		case NL80211_BAND_S1GHZ:
+			memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
+			       sizeof(sband->s1g_cap));
+			sband->channels = data->channels_s1g;
+			sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
+			break;
 		default:
 			continue;
 		}
@@ -4328,6 +4391,8 @@ static int __init init_mac80211_hwsim(void)
 		goto out_exit_virtio;
 	}
 
+	hwsim_init_s1g_channels(hwsim_channels_s1g);
+
 	for (i = 0; i < radios; i++) {
 		struct hwsim_new_radio_params param = { 0 };
 
-- 
2.20.1

Re: [PATCH v3 04/22] nl80211: correctly validate S1G beacon head

[Johannes Berg]

On Tue, 2020-09-08 at 12:03 -0700, Thomas Pedersen wrote:
> The S1G beacon has a different header size than regular
> beacons, so adjust the beacon head validator.

I've applied this already and will keep it, but you later add short
beacons - don't they need further adjustments here too?

johannes

Re: [PATCH v3 04/22] nl80211: correctly validate S1G beacon head

[Thomas Pedersen]

On 2020-09-18 03:56, Johannes Berg wrote:
> On Tue, 2020-09-08 at 12:03 -0700, Thomas Pedersen wrote:
>> The S1G beacon has a different header size than regular
>> beacons, so adjust the beacon head validator.
> 
> I've applied this already and will keep it, but you later add short
> beacons - don't they need further adjustments here too?

Yes, but I was planning on doing that in the (yet to be submitted) "add 
S1G
short beacon support" patch.

-- 
thomas

Re: [PATCH v3 04/22] nl80211: correctly validate S1G beacon head

[Johannes Berg]

On Fri, 2020-09-18 at 10:45 -0700, Thomas Pedersen wrote:
> On 2020-09-18 03:56, Johannes Berg wrote:
> > On Tue, 2020-09-08 at 12:03 -0700, Thomas Pedersen wrote:
> > > The S1G beacon has a different header size than regular
> > > beacons, so adjust the beacon head validator.
> > 
> > I've applied this already and will keep it, but you later add short
> > beacons - don't they need further adjustments here too?
> 
> Yes, but I was planning on doing that in the (yet to be submitted) "add 
> S1G short beacon support" patch.

OK, fair enough, was just wondering :)

johannes

Re: [PATCH v3 14/22] mac80211: encode listen interval for S1G

[kernel test robot]

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Hi Thomas,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on mac80211-next/master]
[cannot apply to mac80211/master v5.9-rc6 next-20200921]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Thomas-Pedersen/add-support-for-S1G-association/20200909-122015
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git master
config: x86_64-randconfig-s022-20200920 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-201-g24bdaac6-dirty
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)

>> net/mac80211/util.c:4412:16: sparse: sparse: incorrect type in return expression (different base types) @@     expected restricted __le16 @@     got int [assigned] listen_interval @@
>> net/mac80211/util.c:4412:16: sparse:     expected restricted __le16
>> net/mac80211/util.c:4412:16: sparse:     got int [assigned] listen_interval
--
>> net/mac80211/mlme.c:789:22: sparse: sparse: restricted __le16 degrades to integer

# https://github.com/0day-ci/linux/commit/3fc1b6bebf4f30e15318e12b83607fb202bf7528
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Thomas-Pedersen/add-support-for-S1G-association/20200909-122015
git checkout 3fc1b6bebf4f30e15318e12b83607fb202bf7528
vim +4412 net/mac80211/util.c

  4394	
  4395	__le16 ieee80211_encode_usf(int listen_interval)
  4396	{
  4397		u16 ui, usf = 0;
  4398	
  4399		/* find greatest USF */
  4400		while (usf < IEEE80211_MAX_USF) {
  4401			if (listen_interval % listen_int_usf[usf + 1])
  4402				break;
  4403			usf += 1;
  4404		}
  4405		ui = listen_interval / listen_int_usf[usf];
  4406	
  4407		/* error if there is a remainder. Should've been checked by user */
  4408		WARN_ON_ONCE(ui > IEEE80211_MAX_UI);
  4409		listen_interval = FIELD_PREP(LISTEN_INT_USF, usf) |
  4410				  FIELD_PREP(LISTEN_INT_UI, ui);
  4411	
> 4412		return listen_interval;

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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