[PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Ron Rindjunsky]

This series of patches contains all 802.11n code + fixes of comments to
the first cycle of 802.11n patches.

Fixed list:
===========
 - removing MAC80211_HT from config and all *.[ch] files
 - removing IWL4965 config dependency on MAC80211_HT
 - adding MAC80211_HT_DEBUG to config file and to relevant places
 - refine TODO remark in ieee80211_sta_process_addba_request
 - net_ratelimit() added to relevant prints
 - renaming ieee80211_rx_h_data_agg to ieee80211_rx_h_amsdu
 - removing parentheses from IEEE80211_CONF_SUPPORT_HT_MODE use
 - changing amsdu_frame type from u16 to u8
 - adding define SUPP_MCS_SET_LEN 16 to indicate MCS set length
 - fixes to some typos

If this series is accepted then next series will contain the follow:

TODO list (planned for next series of patches)
==============================================
 - Full A-MPDU aggregation capability.
 - AP flows
 - Changes to Rx handlers PAE and drop unencrypted (for EAPOL frames in amsdu)
 - Examine config flows in mac80211 (RFC is prepered)

Notes to this series:
======================
This series of patches splits into two parts:
 - patches 1-7 add 802.11n support to mac80211.
 - patches 8-15 demonstrates the use of the above mac80211's 802.11n framework through iwl4965 low level driver

In order to be compatible with the 802.11n requirements for an HT station,
patches 1-7 should not be treated as stand alone patches, but as a complete framework,
although separation to patches by subjects was made for ease of handling.
This applies to patches 8-15 as well.

The patches do _not_ break any existing driver.

patches were made (and tested to work) with wireless branch 2.6.24-rc1 (#everything)

The framework includes the following:
- HT probing.
- HT association.
- Support in Rx A-MSDU.
- Support in A-MPDU addBA request.
- HT information and configuration delivery to both low-level driver and rate scaling.
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[PATCH 01/15] mac80211: adding MAC80211_HT config variable

[Ron Rindjunsky]

This patch adds MAC80211_HT and MAC80211_HT_DEBUG config variables
to separate HT features

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 net/mac80211/Kconfig |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 32c8c08..3c3c8bf 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -51,6 +51,16 @@ config MAC80211_DEBUG
 	  If you are not trying to debug or develop the ieee80211
 	  subsystem, you most likely want to say N here.
 
+config MAC80211_HT_DEBUG
+       bool "Enable HT debugging output"
+       depends on MAC80211_DEBUG
+       ---help---
+       This option enables 802.11n High Throughput features
+       debug tracing output.
+
+       If you are not trying to debug of develop the ieee80211
+       subsystem, you most likely want to say N here.
+
 config MAC80211_VERBOSE_DEBUG
 	bool "Verbose debugging output"
 	depends on MAC80211_DEBUG
-- 
1.5.3.3
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[PATCH 02/15] mac80211: adding 802.11n definitions in ieee80211.h

[Ron Rindjunsky]

This patch adds several structs and definitions to ieee80211.h
to support 802.11n draft specifications.
As 802.11n depends on and extends the 802.11e standard in several issues,
there are also several definitions that belong to 802.11e.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 include/linux/ieee80211.h |  117 +++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 117 insertions(+), 0 deletions(-)

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 214821a..42a550d 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -54,6 +54,8 @@
 #define IEEE80211_STYPE_ACTION		0x00D0
 
 /* control */
+#define IEEE80211_STYPE_BACK_REQ	0x0080
+#define IEEE80211_STYPE_BACK		0x0090
 #define IEEE80211_STYPE_PSPOLL		0x00A0
 #define IEEE80211_STYPE_RTS		0x00B0
 #define IEEE80211_STYPE_CTS		0x00C0
@@ -185,6 +187,25 @@ struct ieee80211_mgmt {
 					u8 new_chan;
 					u8 switch_count;
 				} __attribute__((packed)) chan_switch;
+				struct{
+					u8 action_code;
+					u8 dialog_token;
+					__le16 capab;
+					__le16 timeout;
+					__le16 start_seq_num;
+				} __attribute__((packed)) addba_req;
+				struct{
+					u8 action_code;
+					u8 dialog_token;
+					__le16 status;
+					__le16 capab;
+					__le16 timeout;
+				} __attribute__((packed)) addba_resp;
+				struct{
+					u8 action_code;
+					__le16 params;
+					__le16 reason_code;
+				} __attribute__((packed)) delba;
 			} u;
 		} __attribute__ ((packed)) action;
 	} u;
@@ -205,6 +226,49 @@ struct ieee80211_cts {
 	u8 ra[6];
 } __attribute__ ((packed));
 
+struct ieee80211_bar {
+	__le16 frame_control;
+	__le16 duration;
+	__u8 ra[6];
+	__u8 ta[6];
+	__u16 control;
+	__u16 start_seq_num;
+} __attribute__((packed));
+
+/* IEEE 802.11n elements */
+struct ieee80211_ht_cap {
+	__le16 cap_info;
+	u8 ampdu_params_info;
+	u8 supp_mcs_set[16];
+	__le16 extended_ht_cap_info;
+	__le32 tx_BF_cap_info;
+	u8 antenna_selection_info;
+} __attribute__ ((packed));
+
+struct ieee80211_ht_addt_info {
+	u8 control_chan;
+	u8 ht_param;
+	__le16 operation_mode;
+	__le16 stbc_param;
+	u8 basic_set[16];
+} __attribute__ ((packed));
+
+/* 802.11n HT capabilities masks */
+#define IEEE80211_HT_CAP_SUP_WIDTH		0x0002
+#define IEEE80211_HT_CAP_MIMO_PS		0x000C
+#define IEEE80211_HT_CAP_GRN_FLD		0x0010
+#define IEEE80211_HT_CAP_SGI_20			0x0020
+#define IEEE80211_HT_CAP_SGI_40			0x0040
+#define IEEE80211_HT_CAP_DELAY_BA		0x0400
+#define IEEE80211_HT_CAP_MAX_AMSDU		0x0800
+#define IEEE80211_HT_CAP_AMPDU_FACTOR		0x03
+#define IEEE80211_HT_CAP_AMPDU_DENSITY		0x1C
+/* 802.11n HT IE masks */
+#define IEEE80211_HT_IE_CHA_SEC_OFFSET		0x03
+#define IEEE80211_HT_IE_CHA_WIDTH		0x04
+#define IEEE80211_HT_IE_HT_PROTECTION		0x0003
+#define IEEE80211_HT_IE_NON_GF_STA_PRSNT	0x0004
+#define IEEE80211_HT_IE_NON_HT_STA_PRSNT	0x0010
 
 /* Authentication algorithms */
 #define WLAN_AUTH_OPEN 0
@@ -271,6 +335,18 @@ enum ieee80211_statuscode {
 	WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 	WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 	WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
+	/* 802.11e */
+	WLAN_STATUS_UNSPECIFIED_QOS = 32,
+	WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
+	WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
+	WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
+	WLAN_STATUS_REQUEST_DECLINED = 37,
+	WLAN_STATUS_INVALID_QOS_PARAM = 38,
+	WLAN_STATUS_CHANGE_TSPEC = 39,
+	WLAN_STATUS_WAIT_TS_DELAY = 47,
+	WLAN_STATUS_NO_DIRECT_LINK = 48,
+	WLAN_STATUS_STA_NOT_PRESENT = 49,
+	WLAN_STATUS_STA_NOT_QSTA = 50,
 };
 
 
@@ -301,6 +377,16 @@ enum ieee80211_reasoncode {
 	WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 	WLAN_REASON_IEEE8021X_FAILED = 23,
 	WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
+	/* 802.11e */
+	WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
+	WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
+	WLAN_REASON_DISASSOC_LOW_ACK = 34,
+	WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
+	WLAN_REASON_QSTA_LEAVE_QBSS = 36,
+	WLAN_REASON_QSTA_NOT_USE = 37,
+	WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
+	WLAN_REASON_QSTA_TIMEOUT = 39,
+	WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
 };
 
 
@@ -319,6 +405,15 @@ enum ieee80211_eid {
 	WLAN_EID_HP_PARAMS = 8,
 	WLAN_EID_HP_TABLE = 9,
 	WLAN_EID_REQUEST = 10,
+	/* 802.11e */
+	WLAN_EID_QBSS_LOAD = 11,
+	WLAN_EID_EDCA_PARAM_SET = 12,
+	WLAN_EID_TSPEC = 13,
+	WLAN_EID_TCLAS = 14,
+	WLAN_EID_SCHEDULE = 15,
+	WLAN_EID_TS_DELAY = 43,
+	WLAN_EID_TCLAS_PROCESSING = 44,
+	WLAN_EID_QOS_CAPA = 46,
 	/* 802.11h */
 	WLAN_EID_PWR_CONSTRAINT = 32,
 	WLAN_EID_PWR_CAPABILITY = 33,
@@ -333,6 +428,9 @@ enum ieee80211_eid {
 	/* 802.11g */
 	WLAN_EID_ERP_INFO = 42,
 	WLAN_EID_EXT_SUPP_RATES = 50,
+	/* 802.11n */
+	WLAN_EID_HT_CAPABILITY = 45,
+	WLAN_EID_HT_EXTRA_INFO = 61,
 	/* 802.11i */
 	WLAN_EID_RSN = 48,
 	WLAN_EID_WPA = 221,
@@ -341,6 +439,25 @@ enum ieee80211_eid {
 	WLAN_EID_QOS_PARAMETER = 222
 };
 
+/* Action category code */
+enum ieee80211_category {
+	WLAN_CATEGORY_SPECTRUM_MGMT = 0,
+	WLAN_CATEGORY_QOS = 1,
+	WLAN_CATEGORY_DLS = 2,
+	WLAN_CATEGORY_BACK = 3,
+	WLAN_CATEGORY_WMM = 17,
+};
+
+/* BACK action code */
+enum ieee80211_back_actioncode {
+	WLAN_ACTION_ADDBA_REQ = 0,
+	WLAN_ACTION_ADDBA_RESP = 1,
+	WLAN_ACTION_DELBA = 2,
+};
+
+/* A-MSDU 802.11n */
+#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
+
 /* cipher suite selectors */
 #define WLAN_CIPHER_SUITE_USE_GROUP	0x000FAC00
 #define WLAN_CIPHER_SUITE_WEP40		0x000FAC01
-- 
1.5.3.3
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Re: [PATCH 02/15] mac80211: adding 802.11n definitions in ieee80211.h

[Johannes Berg]

[-- Attachment #1: Type: text/plain, Size: 370 bytes --]


> This patch adds several structs and definitions to ieee80211.h
> to support 802.11n draft specifications.
> As 802.11n depends on and extends the 802.11e standard in several issues,
> there are also several definitions that belong to 802.11e.

Do I remember wrongly or didn't you want to add comments here to explain
the structure names?

Thanks,
Johannes

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Re: [PATCH 02/15] mac80211: adding 802.11n definitions in ieee80211.h

[Ron Rindzonski]

> > This patch adds several structs and definitions to ieee80211.h
> > to support 802.11n draft specifications.
> > As 802.11n depends on and extends the 802.11e standard in several issues,
> > there are also several definitions that belong to 802.11e.
>
> Do I remember wrongly or didn't you want to add comments here to explain
> the structure names?
>

correct, i will add them and resend this patch
thanks

> Thanks,
> Johannes
>
>

Re: [PATCH 02/15] mac80211: adding 802.11n definitions in ieee80211.h

[Johannes Berg]

[-- Attachment #1: Type: text/plain, Size: 353 bytes --]


> As 802.11n depends on and extends the 802.11e standard in several issues,
> there are also several definitions that belong to 802.11e.

Btw. It appears that Broadcom implements at least block ack in non-HT
STAs (they also implement aggregation but that isn't specified before
802.11n afaik). Is there any sense in supporting that?

johannes

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RE: [PATCH 02/15] mac80211: adding 802.11n definitions inieee80211.h

[Rindjunsky, Ron]

>> As 802.11n depends on and extends the 802.11e standard in several
issues,
>> there are also several definitions that belong to 802.11e.

> Btw. It appears that Broadcom implements at least block ack in non-HT
> STAs (they also implement aggregation but that isn't specified before
> 802.11n afaik). Is there any sense in supporting that?

IMHO, there is no point implementing any IEEE802.11e functionality that
has not been certificated or standardized by WFA as well, and non-HT STA
block ack falls into this category.

> johannes
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[PATCH 03/15] mac80211: adding 802.11n HT framework definitions

[Ron Rindjunsky]

New structures:
 - ieee80211_ht_info: describing STA's HT capabilities
 - ieee80211_ht_bss_info: describing BSS's HT characteristics
Changed structures:
 - ieee80211_hw_mode: now also holds PHY HT capabilities for each HW mode
 - ieee80211_conf: ht_conf holds current self HT configuration
                   ht_bss_conf holds current BSS HT configuration
 - flag IEEE80211_CONF_SUPPORT_HT_MODE added to indicate if HT use is
   desired
 - sta_info: now also holds Peer's HT capabilities

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 include/net/mac80211.h  |   55 +++++++++++++++++++++++++++++++++++++++++-----
 net/mac80211/sta_info.h |    3 ++
 2 files changed, 52 insertions(+), 6 deletions(-)

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 17b6039..862431a 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -139,17 +139,54 @@ enum ieee80211_phymode {
 };
 
 /**
+ * struct ieee80211_ht_info - describing STA's HT capabilities
+ *
+ * This structure describes most essential parameters needed
+ * to describe 802.11n HT capabilities for an STA.
+ *
+ * @ht_supported: is HT supported by STA, 0: no, 1: yes
+ * @cap: HT capabilities map as described in 802.11n spec
+ * @ampdu_factor: Maximum A-MPDU length factor
+ * @ampdu_density: Minimum A-MPDU spacing
+ * @supp_mcs_set: Supported MCS set as described in 802.11n spec
+ */
+struct ieee80211_ht_info {
+	u8 ht_supported;
+	u16 cap; /* use IEEE80211_HT_CAP_ */
+	u8 ampdu_factor;
+	u8 ampdu_density;
+	u8 supp_mcs_set[16];
+};
+
+/**
+ * struct ieee80211_ht_bss_info - describing BSS's HT characteristics
+ *
+ * This structure describes most essential parameters needed
+ * to describe 802.11n HT characteristics in a BSS
+ *
+ * @primary_channel: channel number of primery channel
+ * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width)
+ * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection)
+ */
+struct ieee80211_ht_bss_info {
+	u8 primary_channel;
+	u8 bss_cap;  /* use IEEE80211_HT_IE_CHA_ */
+	u8 bss_op_mode; /* use IEEE80211_HT_IE_ */
+};
+
+/**
  * struct ieee80211_hw_mode - PHY mode definition
  *
  * This structure describes the capabilities supported by the device
  * in a single PHY mode.
  *
+ * @list: internal
+ * @channels: pointer to array of supported channels
+ * @rates: pointer to array of supported bitrates
  * @mode: the PHY mode for this definition
  * @num_channels: number of supported channels
- * @channels: pointer to array of supported channels
  * @num_rates: number of supported bitrates
- * @rates: pointer to array of supported bitrates
- * @list: internal
+ * @ht_info: PHY's 802.11n HT abilities for this mode
  */
 struct ieee80211_hw_mode {
 	struct list_head list;
@@ -158,6 +195,7 @@ struct ieee80211_hw_mode {
 	enum ieee80211_phymode mode;
 	int num_channels;
 	int num_rates;
+	struct ieee80211_ht_info ht_info;
 };
 
 /**
@@ -406,11 +444,12 @@ struct ieee80211_tx_status {
  *
  * @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time
  * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported)
- *
+ * @IEEE80211_CONF_SUPPORT_HT_MODE: use 802.11n HT capabilities (if supported)
  */
 enum ieee80211_conf_flags {
-	IEEE80211_CONF_SHORT_SLOT_TIME	= 1<<0,
-	IEEE80211_CONF_RADIOTAP		= 1<<1,
+	IEEE80211_CONF_SHORT_SLOT_TIME	= (1<<0),
+	IEEE80211_CONF_RADIOTAP		= (1<<1),
+	IEEE80211_CONF_SUPPORT_HT_MODE	= (1<<2),
 };
 
 /**
@@ -434,6 +473,8 @@ enum ieee80211_conf_flags {
  * @antenna_sel_tx: transmit antenna selection, 0: default/diversity,
  *	1/2: antenna 0/1
  * @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx
+ * @ht_conf: describes current self configuration of 802.11n HT capabilies
+ * @ht_bss_conf: describes current BSS configuration of 802.11n HT parameters
  */
 struct ieee80211_conf {
 	int channel;			/* IEEE 802.11 channel number */
@@ -452,6 +493,8 @@ struct ieee80211_conf {
 	u8 antenna_max;
 	u8 antenna_sel_tx;
 	u8 antenna_sel_rx;
+	struct ieee80211_ht_info ht_conf;
+	struct ieee80211_ht_bss_info ht_bss_conf;
 };
 
 /**
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 8f7ebe4..e1a4ac1 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -99,6 +99,9 @@ struct sta_info {
 
 	u16 listen_interval;
 
+	struct ieee80211_ht_info ht_info; /* 802.11n HT capabilities
+					     of this STA */
+
 #ifdef CONFIG_MAC80211_DEBUGFS
 	struct sta_info_debugfsdentries {
 		struct dentry *dir;
-- 
1.5.3.3
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[PATCH 04/15] mac80211: adding 802.11n IEs handling

[Ron Rindjunsky]

This patch presents the ability to parse and compose HT IEs, and to put
the IE relevant data inside the mac80211's internal HT structures

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 net/mac80211/ieee80211_i.h   |    8 +++-
 net/mac80211/ieee80211_sta.c |   89 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 94 insertions(+), 3 deletions(-)

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index b4e32ab..915d7b1 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -89,6 +89,8 @@ struct ieee80211_sta_bss {
 	size_t rsn_ie_len;
 	u8 *wmm_ie;
 	size_t wmm_ie_len;
+	u8 *ht_ie;
+	size_t ht_ie_len;
 #define IEEE80211_MAX_SUPP_RATES 32
 	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
 	size_t supp_rates_len;
@@ -759,7 +761,11 @@ int ieee80211_sta_deauthenticate(struct net_device *dev, u16 reason);
 int ieee80211_sta_disassociate(struct net_device *dev, u16 reason);
 void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes);
 void ieee80211_reset_erp_info(struct net_device *dev);
-
+int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
+				   struct ieee80211_ht_info *ht_info);
+int ieee80211_ht_addt_info_ie_to_ht_bss_info(
+			struct ieee80211_ht_addt_info *ht_add_info_ie,
+			struct ieee80211_ht_bss_info *bss_info);
 /* ieee80211_iface.c */
 int ieee80211_if_add(struct net_device *dev, const char *name,
 		     struct net_device **new_dev, int type);
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index 2079e98..7b1773c 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -90,7 +90,8 @@ struct ieee802_11_elems {
 	u8 *ext_supp_rates;
 	u8 *wmm_info;
 	u8 *wmm_param;
-
+	u8 *ht_cap_elem;
+	u8 *ht_info_elem;
 	/* length of them, respectively */
 	u8 ssid_len;
 	u8 supp_rates_len;
@@ -106,6 +107,8 @@ struct ieee802_11_elems {
 	u8 ext_supp_rates_len;
 	u8 wmm_info_len;
 	u8 wmm_param_len;
+	u8 ht_cap_elem_len;
+	u8 ht_info_elem_len;
 };
 
 static void ieee802_11_parse_elems(u8 *start, size_t len,
@@ -190,6 +193,14 @@ static void ieee802_11_parse_elems(u8 *start, size_t len,
 			elems->ext_supp_rates = pos;
 			elems->ext_supp_rates_len = elen;
 			break;
+		case WLAN_EID_HT_CAPABILITY:
+			elems->ht_cap_elem = pos;
+			elems->ht_cap_elem_len = elen;
+			break;
+		case WLAN_EID_HT_EXTRA_INFO:
+			elems->ht_info_elem = pos;
+			elems->ht_info_elem_len = elen;
+			break;
 		default:
 			break;
 		}
@@ -332,6 +343,51 @@ static void ieee80211_handle_erp_ie(struct net_device *dev, u8 erp_value)
 		ieee80211_erp_info_change_notify(dev, changes);
 }
 
+int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
+				   struct ieee80211_ht_info *ht_info)
+{
+
+	if (ht_info == NULL)
+		return -EINVAL;
+
+	memset(ht_info, 0, sizeof(*ht_info));
+
+	if (ht_cap_ie) {
+		u8 ampdu_info = ht_cap_ie->ampdu_params_info;
+
+		ht_info->ht_supported = 1;
+		ht_info->cap = le16_to_cpu(ht_cap_ie->cap_info);
+		ht_info->ampdu_factor =
+			ampdu_info & IEEE80211_HT_CAP_AMPDU_FACTOR;
+		ht_info->ampdu_density =
+			(ampdu_info & IEEE80211_HT_CAP_AMPDU_DENSITY) >> 2;
+		memcpy(ht_info->supp_mcs_set, ht_cap_ie->supp_mcs_set, 16);
+	} else
+		ht_info->ht_supported = 0;
+
+	return 0;
+}
+
+int ieee80211_ht_addt_info_ie_to_ht_bss_info(
+			struct ieee80211_ht_addt_info *ht_add_info_ie,
+			struct ieee80211_ht_bss_info *bss_info)
+{
+	if (bss_info == NULL)
+		return -EINVAL;
+
+	memset(bss_info, 0, sizeof(*bss_info));
+
+	if (ht_add_info_ie) {
+		u16 op_mode;
+		op_mode = le16_to_cpu(ht_add_info_ie->operation_mode);
+
+		bss_info->primary_channel = ht_add_info_ie->control_chan;
+		bss_info->bss_cap = ht_add_info_ie->ht_param;
+		bss_info->bss_op_mode = (u8)(op_mode & 0xff);
+	}
+
+	return 0;
+}
 
 static void ieee80211_sta_send_associnfo(struct net_device *dev,
 					 struct ieee80211_if_sta *ifsta)
@@ -630,6 +686,19 @@ static void ieee80211_send_assoc(struct net_device *dev,
 		*pos++ = 1; /* WME ver */
 		*pos++ = 0;
 	}
+	/* wmm support is a must to HT */
+	if (wmm && mode->ht_info.ht_supported) {
+		__le16 tmp = cpu_to_le16(mode->ht_info.cap);
+		pos = skb_put(skb, sizeof(struct ieee80211_ht_cap)+2);
+		*pos++ = WLAN_EID_HT_CAPABILITY;
+		*pos++ = sizeof(struct ieee80211_ht_cap);
+		memset(pos, 0, sizeof(struct ieee80211_ht_cap));
+		memcpy(pos, &tmp, sizeof(u16));
+		pos += sizeof(u16);
+		*pos++ = (mode->ht_info.ampdu_factor |
+				(mode->ht_info.ampdu_density << 2));
+		memcpy(pos, mode->ht_info.supp_mcs_set, 16);
+	}
 
 	kfree(ifsta->assocreq_ies);
 	ifsta->assocreq_ies_len = (skb->data + skb->len) - ies;
@@ -1384,6 +1453,7 @@ static void ieee80211_rx_bss_free(struct ieee80211_sta_bss *bss)
 	kfree(bss->wpa_ie);
 	kfree(bss->rsn_ie);
 	kfree(bss->wmm_ie);
+	kfree(bss->ht_ie);
 	kfree(bss);
 }
 
@@ -1631,7 +1701,22 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
 		bss->wmm_ie = NULL;
 		bss->wmm_ie_len = 0;
 	}
-
+	if (elems.ht_cap_elem &&
+	    (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
+	     memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
+		kfree(bss->ht_ie);
+		bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
+		if (bss->ht_ie) {
+			memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
+			       elems.ht_cap_elem_len + 2);
+			bss->ht_ie_len = elems.ht_cap_elem_len + 2;
+		} else
+			bss->ht_ie_len = 0;
+	} else if (!elems.ht_cap_elem && bss->ht_ie) {
+		kfree(bss->ht_ie);
+		bss->ht_ie = NULL;
+		bss->ht_ie_len = 0;
+	}
 
 	bss->hw_mode = rx_status->phymode;
 	bss->freq = rx_status->freq;
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 05/15] mac80211: adding 802.11n essential A-MPDU addBA capability

[Ron Rindjunsky]

This patch adds the capability to identify and answer an add block ACK
request.
As this series of patches only adds HT handling with no aggregations,
(A-MPDU aggregations acceptance is not obligatory according to 802.11n
draft)
we are currently sending back a refusal upon this request.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 net/mac80211/ieee80211_sta.c |  124 ++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 124 insertions(+), 0 deletions(-)

diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index 7b1773c..e02a908 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -57,6 +57,13 @@
 
 #define ERP_INFO_USE_PROTECTION BIT(1)
 
+/* mgmt header + 1 byte action code */
+#define IEEE80211_MIN_ACTION_SIZE (24 + 1)
+
+#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
+#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
+#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
+
 static void ieee80211_send_probe_req(struct net_device *dev, u8 *dst,
 				     u8 *ssid, size_t ssid_len);
 static struct ieee80211_sta_bss *
@@ -991,6 +998,91 @@ static void ieee80211_auth_challenge(struct net_device *dev,
 			    elems.challenge_len + 2, 1);
 }
 
+static void ieee80211_send_addba_resp(struct net_device *dev, u8 *da, u16 tid,
+					u8 dialog_token, u16 status, u16 policy,
+					u16 buf_size, u16 timeout)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sk_buff *skb;
+	struct ieee80211_mgmt *mgmt;
+	u16 capab;
+
+	skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
+	if (!skb) {
+		printk(KERN_DEBUG "%s: failed to allocate buffer "
+		       "for addba resp frame\n", dev->name);
+		return;
+	}
+
+	skb_reserve(skb, local->hw.extra_tx_headroom);
+	mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
+	memset(mgmt, 0, 24);
+	memcpy(mgmt->da, da, ETH_ALEN);
+	memcpy(mgmt->sa, dev->dev_addr, ETH_ALEN);
+	if (sdata->type == IEEE80211_IF_TYPE_AP)
+		memcpy(mgmt->bssid, dev->dev_addr, ETH_ALEN);
+	else
+		memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
+	mgmt->frame_control = IEEE80211_FC(IEEE80211_FTYPE_MGMT,
+					   IEEE80211_STYPE_ACTION);
+
+	skb_put(skb, 1 + sizeof(mgmt->u.action.u.addba_resp));
+	mgmt->u.action.category = WLAN_CATEGORY_BACK;
+	mgmt->u.action.u.addba_resp.action_code = WLAN_ACTION_ADDBA_RESP;
+	mgmt->u.action.u.addba_resp.dialog_token = dialog_token;
+
+	capab = (u16)(policy << 1);	/* bit 1 aggregation policy */
+	capab |= (u16)(tid << 2); 	/* bit 5:2 TID number */
+	capab |= (u16)(buf_size << 6);	/* bit 15:6 max size of aggregation */
+
+	mgmt->u.action.u.addba_resp.capab = cpu_to_le16(capab);
+	mgmt->u.action.u.addba_resp.timeout = cpu_to_le16(timeout);
+	mgmt->u.action.u.addba_resp.status = cpu_to_le16(status);
+
+	ieee80211_sta_tx(dev, skb, 0);
+
+	return;
+}
+
+static void ieee80211_sta_process_addba_request(struct net_device *dev,
+						struct ieee80211_mgmt *mgmt,
+						size_t len)
+{
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct sta_info *sta;
+	u16 capab, tid, timeout, ba_policy, buf_size, status;
+	u8 dialog_token;
+
+	sta = sta_info_get(local, mgmt->sa);
+	if (!sta)
+		return;
+
+	/* extract session parameters from addba request frame */
+	dialog_token = mgmt->u.action.u.addba_req.dialog_token;
+	timeout = le16_to_cpu(mgmt->u.action.u.addba_req.timeout);
+
+	capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
+	ba_policy = (capab & IEEE80211_ADDBA_PARAM_POLICY_MASK) >> 1;
+	tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+	buf_size = (capab & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) >> 6;
+
+	/* TODO - currently aggregation is declined (A-MPDU add BA request
+	* acceptance is not obligatory by 802.11n draft), but here is
+	* the entry point for dealing with it */
+#ifdef MAC80211_HT_DEBUG
+	if (net_ratelimit())
+		printk(KERN_DEBUG "Add Block Ack request arrived,"
+				   " currently denying it\n");
+#endif /* MAC80211_HT_DEBUG */
+
+	status = WLAN_STATUS_REQUEST_DECLINED;
+
+	ieee80211_send_addba_resp(sta->dev, sta->addr, tid, dialog_token,
+				status, 1, buf_size, timeout);
+	sta_info_put(sta);
+}
 
 static void ieee80211_rx_mgmt_auth(struct net_device *dev,
 				   struct ieee80211_if_sta *ifsta,
@@ -1864,6 +1956,34 @@ static void ieee80211_rx_mgmt_probe_req(struct net_device *dev,
 	ieee80211_sta_tx(dev, skb, 0);
 }
 
+void ieee80211_rx_mgmt_action(struct net_device *dev,
+			     struct ieee80211_if_sta *ifsta,
+			     struct ieee80211_mgmt *mgmt,
+			     size_t len)
+{
+	if (len < IEEE80211_MIN_ACTION_SIZE)
+		return;
+
+	switch (mgmt->u.action.category) {
+	case WLAN_CATEGORY_BACK:
+		switch (mgmt->u.action.u.addba_req.action_code) {
+		case WLAN_ACTION_ADDBA_REQ:
+			if (len < (IEEE80211_MIN_ACTION_SIZE +
+				   sizeof(mgmt->u.action.u.addba_req)))
+				break;
+			ieee80211_sta_process_addba_request(dev, mgmt, len);
+			break;
+		default:
+			if (net_ratelimit())
+			   printk(KERN_DEBUG "%s: received unsupported BACK\n",
+					dev->name);
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+}
 
 void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
 			   struct ieee80211_rx_status *rx_status)
@@ -1893,6 +2013,7 @@ void ieee80211_sta_rx_mgmt(struct net_device *dev, struct sk_buff *skb,
 	case IEEE80211_STYPE_REASSOC_RESP:
 	case IEEE80211_STYPE_DEAUTH:
 	case IEEE80211_STYPE_DISASSOC:
+	case IEEE80211_STYPE_ACTION:
 		skb_queue_tail(&ifsta->skb_queue, skb);
 		queue_work(local->hw.workqueue, &ifsta->work);
 		return;
@@ -1950,6 +2071,9 @@ static void ieee80211_sta_rx_queued_mgmt(struct net_device *dev,
 	case IEEE80211_STYPE_DISASSOC:
 		ieee80211_rx_mgmt_disassoc(dev, ifsta, mgmt, skb->len);
 		break;
+	case IEEE80211_STYPE_ACTION:
+		ieee80211_rx_mgmt_action(dev, ifsta, mgmt, skb->len);
+		break;
 	}
 
 	kfree_skb(skb);
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 06/15] mac80211: adding 802.11n essential A-MSDU Rx capability

[Ron Rindjunsky]

This patch adds the ability to receive and handle A-MSDU frames.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 net/mac80211/ieee80211_i.h |    1 +
 net/mac80211/rx.c          |  216 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 217 insertions(+), 0 deletions(-)

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 915d7b1..5175054 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -155,6 +155,7 @@ struct ieee80211_txrx_data {
 			int load;
 			u32 tkip_iv32;
 			u16 tkip_iv16;
+			u8  amsdu_frame;
 		} rx;
 	} u;
 };
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 428a9fc..3c4d13e 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -243,6 +243,10 @@ ieee80211_rx_h_parse_qos(struct ieee80211_txrx_data *rx)
 		u8 *qc = data + ieee80211_get_hdrlen(rx->fc) - QOS_CONTROL_LEN;
 		/* frame has qos control */
 		tid = qc[0] & QOS_CONTROL_TID_MASK;
+		if (qc[0] & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
+			rx->u.rx.amsdu_frame = 1;
+		else
+			rx->u.rx.amsdu_frame = 0;
 	} else {
 		if (unlikely((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)) {
 			/* Separate TID for management frames */
@@ -1008,6 +1012,217 @@ ieee80211_rx_h_drop_unencrypted(struct ieee80211_txrx_data *rx)
 }
 
 static ieee80211_txrx_result
+ieee80211_rx_h_amsdu(struct ieee80211_txrx_data *rx)
+{
+	struct net_device *dev = rx->dev;
+	struct ieee80211_local *local = rx->local;
+	u16 fc, hdrlen, ethertype;
+	u8 *payload;
+	struct sk_buff *skb = rx->skb, *skb2, *frame = NULL;
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+	const struct ethhdr *eth;
+	int remaining;
+	u8 dst[ETH_ALEN];
+	u8 src[ETH_ALEN];
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+	DECLARE_MAC_BUF(mac);
+
+	fc = rx->fc;
+	if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA))
+		return TXRX_CONTINUE;
+
+	if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+		return TXRX_DROP;
+
+	if (!rx->u.rx.amsdu_frame)
+		return TXRX_CONTINUE;
+
+	hdrlen = ieee80211_get_hdrlen(fc);
+
+	switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+	case IEEE80211_FCTL_TODS:
+		/* BSSID SA DA */
+		if (unlikely(sdata->type != IEEE80211_IF_TYPE_AP &&
+		    sdata->type != IEEE80211_IF_TYPE_VLAN)) {
+			if (net_ratelimit())
+			   printk(KERN_DEBUG "%s: dropped ToDS frame (BSSID=%s"
+			       " SA=%s DA=%s)\n",
+			       dev->name, print_mac(mac, hdr->addr1),
+			       print_mac(mac, hdr->addr2),
+			       print_mac(mac, hdr->addr3));
+			return TXRX_DROP;
+		}
+		break;
+	case (IEEE80211_FCTL_TODS|IEEE80211_FCTL_FROMDS):
+		/* RA TA DA SA */
+		if (unlikely(sdata->type != IEEE80211_IF_TYPE_WDS)) {
+			if (net_ratelimit())
+			   printk(KERN_DEBUG "%s: dropped FromDS&ToDS frame"
+			       " (RA=%s TA=%s DA=%s SA=%s)\n",
+			       rx->dev->name, print_mac(mac, hdr->addr1),
+			       print_mac(mac, hdr->addr2),
+			       print_mac(mac, hdr->addr3),
+			       print_mac(mac, hdr->addr4));
+			return TXRX_DROP;
+		}
+		break;
+	case IEEE80211_FCTL_FROMDS:
+		/* DA BSSID SA */
+		if (sdata->type != IEEE80211_IF_TYPE_STA)
+			return TXRX_DROP;
+		break;
+	case 0:
+		/* DA SA BSSID */
+		if (sdata->type != IEEE80211_IF_TYPE_IBSS) {
+			if (net_ratelimit())
+				printk(KERN_DEBUG "%s: dropped IBSS frame"
+				       " (DA=%s SA=%s BSSID=%s)\n",
+				       dev->name, print_mac(mac, hdr->addr1),
+				       print_mac(mac, hdr->addr2),
+				       print_mac(mac, hdr->addr3));
+			return TXRX_DROP;
+		}
+		break;
+	}
+
+	if (unlikely((skb->len - hdrlen) < 8)) {
+		if (net_ratelimit())
+			printk(KERN_DEBUG "%s: RX too short data frame "
+			       "payload\n", dev->name);
+		return TXRX_DROP;
+	}
+
+	eth = (struct ethhdr *) skb_pull(skb, hdrlen);
+
+	payload = skb->data;
+	ethertype = (payload[6] << 8) | payload[7];
+
+	if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
+	    ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+	    compare_ether_addr(payload,
+	    bridge_tunnel_header) == 0))
+		eth = (struct ethhdr *) skb_pull(skb, 8);
+
+	if (!eth)
+		return TXRX_DROP;
+
+	while (skb != frame) {
+		u8 padding;
+		__be16 len = eth->h_proto;
+		unsigned int subframe_len = sizeof(struct ethhdr) + ntohs(len);
+
+		remaining = skb->len;
+		memcpy(dst, eth->h_dest, ETH_ALEN);
+		memcpy(src, eth->h_source, ETH_ALEN);
+
+		padding = ((4 - subframe_len) & 0x3);
+		/* the last MSDU has no padding */
+		if (subframe_len > remaining) {
+			printk(KERN_DEBUG "%s: wrong buffer size", dev->name);
+			return TXRX_DROP;
+		}
+
+		skb_pull(skb, sizeof(struct ethhdr));
+		/* if last subframe reuse skb */
+		if (remaining  <= subframe_len + padding)
+			frame = skb;
+		else {
+			frame = dev_alloc_skb(local->hw.extra_tx_headroom +
+					      subframe_len);
+
+			if (frame == NULL)
+				return TXRX_DROP;
+
+			skb_reserve(frame, local->hw.extra_tx_headroom +
+				    sizeof(struct ethhdr));
+			memcpy(skb_put(frame, ntohs(len)), skb->data,
+				ntohs(len));
+
+			eth = (struct ethhdr *) skb_pull(skb, ntohs(len) +
+							padding);
+			if (!eth) {
+				printk(KERN_DEBUG "%s: wrong buffer size ",
+				       dev->name);
+				dev_kfree_skb(frame);
+				return TXRX_DROP;
+			}
+		}
+		skb2 = NULL;
+
+		payload = frame->data;
+		ethertype = (payload[6] << 8) | payload[7];
+
+		if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
+			ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+			compare_ether_addr(payload,
+					   bridge_tunnel_header) == 0)) {
+			/* remove RFC1042 or Bridge-Tunnel
+			 * encapsulation and replace EtherType */
+			skb_pull(frame, 6);
+			memcpy(skb_push(frame, ETH_ALEN), src, ETH_ALEN);
+			memcpy(skb_push(frame, ETH_ALEN), dst, ETH_ALEN);
+		} else {
+			memcpy(skb_push(frame, sizeof(__be16)), &len,
+				sizeof(__be16));
+			memcpy(skb_push(frame, ETH_ALEN), src, ETH_ALEN);
+			memcpy(skb_push(frame, ETH_ALEN), dst, ETH_ALEN);
+		}
+
+		if (local->bridge_packets &&
+		    (sdata->type == IEEE80211_IF_TYPE_AP ||
+		     sdata->type == IEEE80211_IF_TYPE_VLAN) &&
+		     (rx->flags & IEEE80211_TXRXD_RXRA_MATCH)) {
+			if (is_multicast_ether_addr(frame->data)) {
+				/* send multicast frames both to higher layers
+				 * in local net stack and back to the wireless
+				 * media */
+				skb2 = skb_copy(frame, GFP_ATOMIC);
+				if (!skb2)
+					printk(KERN_DEBUG "%s: failed to clone"
+					       " multicast frame\n", dev->name);
+			} else {
+				struct sta_info *dsta;
+
+				dsta = sta_info_get(local, frame->data);
+				if (dsta && !dsta->dev)
+					printk(KERN_DEBUG "Station with null "
+					       "dev structure!\n");
+				else if (dsta && dsta->dev == dev) {
+					/* Destination station is associated
+					 *to this AP, so send the frame
+					 * directly to it and do not pass
+					 * the frame to local net stack.
+					 */
+					skb2 = frame;
+					frame = NULL;
+				}
+				if (dsta)
+					sta_info_put(dsta);
+			}
+		}
+		if (frame) {
+			/* deliver to local stack */
+			skb_set_network_header(frame, 0);
+			frame->protocol = eth_type_trans(frame, dev);
+			frame->priority = skb->priority;
+			netif_rx(frame);
+		}
+
+		if (skb2) {
+			/* send to wireless media */
+			skb2->protocol = __constant_htons(ETH_P_802_3);
+			skb_set_network_header(skb2, 0);
+			skb_set_mac_header(skb2, 0);
+			skb2->priority = skb->priority;
+			skb2->dev = dev;
+			dev_queue_xmit(skb2);
+		}
+	}
+
+	return TXRX_QUEUED;
+}
+
+static ieee80211_txrx_result
 ieee80211_rx_h_data(struct ieee80211_txrx_data *rx)
 {
 	struct net_device *dev = rx->dev;
@@ -1343,6 +1558,7 @@ ieee80211_rx_handler ieee80211_rx_handlers[] =
 	ieee80211_rx_h_remove_qos_control,
 	ieee80211_rx_h_802_1x_pae,
 	ieee80211_rx_h_drop_unencrypted,
+	ieee80211_rx_h_amsdu,
 	ieee80211_rx_h_data,
 	ieee80211_rx_h_mgmt,
 	NULL
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 07/15] mac80211: adding 802.11n configuration flows

[Ron Rindjunsky]

This patch configures the 802.11n mode of operation
internally in ieee80211_conf structure and in the low-level
driver as well (through op conf_ht).
It does not include AP configuration flows.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 include/net/mac80211.h       |    3 ++
 net/mac80211/ieee80211.c     |   51 ++++++++++++++++++++++++++++++++++++++++++
 net/mac80211/ieee80211_i.h   |    3 ++
 net/mac80211/ieee80211_sta.c |   32 ++++++++++++++++++++++++++
 4 files changed, 89 insertions(+), 0 deletions(-)

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 862431a..2fcf9f3 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1040,6 +1040,8 @@ enum ieee80211_erp_change_flags {
  * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us.
  *	This is needed only for IBSS mode and the result of this function is
  *	used to determine whether to reply to Probe Requests.
+ *
+ * @conf_ht: Configures low level driver with 802.11n HT data. Must be atomic.
  */
 struct ieee80211_ops {
 	int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb,
@@ -1085,6 +1087,7 @@ struct ieee80211_ops {
 			     struct sk_buff *skb,
 			     struct ieee80211_tx_control *control);
 	int (*tx_last_beacon)(struct ieee80211_hw *hw);
+	int (*conf_ht)(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
 };
 
 /**
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
index e0ee65a..bcfc771 100644
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -34,6 +34,8 @@
 #include "debugfs.h"
 #include "debugfs_netdev.h"
 
+#define SUPP_MCS_SET_LEN 16
+
 /*
  * For seeing transmitted packets on monitor interfaces
  * we have a radiotap header too.
@@ -534,6 +536,55 @@ int ieee80211_hw_config(struct ieee80211_local *local)
 	return ret;
 }
 
+/**
+ * ieee80211_hw_config_ht should be used only after legacy configuration
+ * has been determined, as ht configuration depends upon the hardware's
+ * HT abilities for a _specific_ band.
+ */
+int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht,
+			   struct ieee80211_ht_info *req_ht_cap,
+			   struct ieee80211_ht_bss_info *req_bss_cap)
+{
+	struct ieee80211_conf *conf = &local->hw.conf;
+	struct ieee80211_hw_mode *mode = conf->mode;
+	int i;
+
+	/* HT is not supported */
+	if (!mode->ht_info.ht_supported) {
+		conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
+		return -EOPNOTSUPP;
+	}
+
+	/* disable HT */
+	if (!enable_ht) {
+		conf->flags &= ~IEEE80211_CONF_SUPPORT_HT_MODE;
+	} else {
+		conf->flags |= IEEE80211_CONF_SUPPORT_HT_MODE;
+		conf->ht_conf.cap = req_ht_cap->cap & mode->ht_info.cap;
+		conf->ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS);
+		conf->ht_conf.cap |=
+			mode->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS;
+		conf->ht_bss_conf.primary_channel =
+			req_bss_cap->primary_channel;
+		conf->ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
+		conf->ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;
+		for (i = 0; i < SUPP_MCS_SET_LEN; i++)
+			conf->ht_conf.supp_mcs_set[i] =
+				mode->ht_info.supp_mcs_set[i] &
+				  req_ht_cap->supp_mcs_set[i];
+
+		/* In STA mode, this gives us indication
+		 * to the AP's mode of operation */
+		conf->ht_conf.ht_supported = 1;
+		conf->ht_conf.ampdu_factor = req_ht_cap->ampdu_factor;
+		conf->ht_conf.ampdu_density = req_ht_cap->ampdu_density;
+	}
+
+	local->ops->conf_ht(local_to_hw(local), &local->hw.conf);
+
+	return 0;
+}
+
 void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes)
 {
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 5175054..b5cd899 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -709,6 +709,9 @@ int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr);
 void ieee80211_if_setup(struct net_device *dev);
 struct ieee80211_rate *ieee80211_get_rate(struct ieee80211_local *local,
 					  int phymode, int hwrate);
+int ieee80211_hw_config_ht(struct ieee80211_local *local, int enable_ht,
+			   struct ieee80211_ht_info *req_ht_cap,
+			   struct ieee80211_ht_bss_info *req_bss_cap);
 
 /* ieee80211_ioctl.c */
 extern const struct iw_handler_def ieee80211_iw_handler_def;
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index e02a908..863957c 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1441,6 +1441,19 @@ static void ieee80211_rx_mgmt_assoc_resp(struct net_device *dev,
 	}
 	sta->supp_rates = rates;
 
+	if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
+	    local->ops->conf_ht) {
+		struct ieee80211_ht_bss_info bss_info;
+
+		ieee80211_ht_cap_ie_to_ht_info(
+				(struct ieee80211_ht_cap *)
+				elems.ht_cap_elem, &sta->ht_info);
+		ieee80211_ht_addt_info_ie_to_ht_bss_info(
+				(struct ieee80211_ht_addt_info *)
+				elems.ht_info_elem, &bss_info);
+		ieee80211_hw_config_ht(local, 1, &sta->ht_info, &bss_info);
+	}
+
 	rate_control_rate_init(sta, local);
 
 	if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
@@ -1853,6 +1866,8 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
 	struct ieee80211_if_sta *ifsta;
 	size_t baselen;
 	struct ieee802_11_elems elems;
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_conf *conf = &local->hw.conf;
 
 	ieee80211_rx_bss_info(dev, mgmt, len, rx_status, 1);
 
@@ -1875,6 +1890,23 @@ static void ieee80211_rx_mgmt_beacon(struct net_device *dev,
 	if (elems.erp_info && elems.erp_info_len >= 1)
 		ieee80211_handle_erp_ie(dev, elems.erp_info[0]);
 
+	if (elems.ht_cap_elem && elems.ht_info_elem &&
+	    elems.wmm_param && local->ops->conf_ht &&
+	    conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) {
+		struct ieee80211_ht_bss_info bss_info;
+
+		ieee80211_ht_addt_info_ie_to_ht_bss_info(
+				(struct ieee80211_ht_addt_info *)
+				elems.ht_info_elem, &bss_info);
+		/* check if AP changed bss inforamation */
+		if ((conf->ht_bss_conf.primary_channel !=
+		     bss_info.primary_channel) ||
+		    (conf->ht_bss_conf.bss_cap != bss_info.bss_cap) ||
+		    (conf->ht_bss_conf.bss_op_mode != bss_info.bss_op_mode))
+			ieee80211_hw_config_ht(local, 1, &conf->ht_conf,
+						&bss_info);
+	}
+
 	if (elems.wmm_param && (ifsta->flags & IEEE80211_STA_WMM_ENABLED)) {
 		ieee80211_sta_wmm_params(dev, ifsta, elems.wmm_param,
 					 elems.wmm_param_len);
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 08/15] iwlwifi: 802.11n remove unnecessary config dependency

[Ron Rindjunsky]

This patch removes MAC80211_HT config dependency as it has been
eliminated in mac80211

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 drivers/net/wireless/iwlwifi/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/Kconfig b/drivers/net/wireless/iwlwifi/Kconfig
index c12120d..ae2d314 100644
--- a/drivers/net/wireless/iwlwifi/Kconfig
+++ b/drivers/net/wireless/iwlwifi/Kconfig
@@ -53,7 +53,7 @@ config IWL4965_SENSITIVITY
 config IWL4965_HT
 	bool "Enable 802.11n HT features in iwl4965 driver"
 	depends on EXPERIMENTAL
-	depends on IWL4965 && MAC80211_HT
+	depends on IWL4965
 	default n
 	---help---
 	  This option enables IEEE 802.11n High Throughput features
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 09/15] iwlwifi: 802.11n new framework structures preperation

[Ron Rindjunsky]

This patch removes unnecessary or duplicate 802.11n data from structures
in the code, and prepares them for new mac80211's 802.11n framework

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 drivers/net/wireless/iwlwifi/iwl-4965-rs.c  |    2 +-
 drivers/net/wireless/iwlwifi/iwl-4965.h     |   27 +++++++++++----------------
 drivers/net/wireless/iwlwifi/iwl4965-base.c |    2 --
 3 files changed, 12 insertions(+), 19 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
index 5189788..9d7b029 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
@@ -1824,7 +1824,7 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
 	if (local->hw.conf.phymode == MODE_IEEE80211A)
 		sta->last_txrate += IWL_FIRST_OFDM_RATE;
 
-	crl->is_dup = priv->is_dup;
+	crl->is_dup = 0;
 	crl->valid_antenna = priv->valid_antenna;
 	crl->antenna = priv->antenna;
 	crl->is_green = rs_use_green(priv);
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.h b/drivers/net/wireless/iwlwifi/iwl-4965.h
index d61cf0e..71cd2b7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.h
@@ -477,22 +477,23 @@ union iwl_ht_rate_supp {
 #define CFG_HT_MPDU_DENSITY_2USEC   (0x5)
 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC
 
-struct sta_ht_info {
+struct iwl_ht_info {
+	/* self configuration data */
 	u8 is_ht;
-	u16 rx_mimo_ps_mode;
+	u8 supported_chan_width;
 	u16 tx_mimo_ps_mode;
-	u16 control_channel;
+	u8 is_green_field;
+	u8 sgf;
 	u8 max_amsdu_size;
 	u8 ampdu_factor;
 	u8 mpdu_density;
-	u8 operating_mode;
-	u8 supported_chan_width;
+	u8 supp_mcs_set[16];
+	/* BSS related data */
+	u8 control_channel;
 	u8 extension_chan_offset;
-	u8 is_green_field;
-	u8 sgf;
-	u8 supp_rates[16];
 	u8 tx_chan_width;
-	u8 chan_width_cap;
+	u8 ht_protection;
+	u8 non_GF_STA_present;
 };
 #endif				/*CONFIG_IWL4965_HT */
 
@@ -1151,11 +1152,6 @@ struct iwl_priv {
 	u8 call_post_assoc_from_beacon;
 	u8 assoc_station_added;
 	u8 use_ant_b_for_management_frame;	/* Tx antenna selection */
-	/* HT variables */
-	u8 is_dup;
-	u8 is_ht_enabled;
-	u8 channel_width;	/* 0=20MHZ, 1=40MHZ */
-	u8 current_channel_width;
 	u8 valid_antenna;	/* Bit mask of antennas actually connected */
 #ifdef CONFIG_IWL4965_SENSITIVITY
 	struct iwl_sensitivity_data sensitivity_data;
@@ -1165,9 +1161,8 @@ struct iwl_priv {
 #endif /*CONFIG_IWL4965_SENSITIVITY*/
 
 #ifdef CONFIG_IWL4965_HT
-	struct sta_ht_info current_assoc_ht;
+	struct iwl_ht_info current_ht_config;
 #endif
-	u8 active_rate_ht[2];
 	u8 last_phy_res[100];
 
 	/* Rate scaling data */
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index f089b06..d9f918b 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -9070,8 +9070,6 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	priv->ps_mode = 0;
 	priv->use_ant_b_for_management_frame = 1; /* start with ant B */
-	priv->is_ht_enabled = 1;
-	priv->channel_width = IWL_CHANNEL_WIDTH_40MHZ;
 	priv->valid_antenna = 0x7;	/* assume all 3 connected */
 	priv->ps_mode = IWL_MIMO_PS_NONE;
 
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 10/15] iwlwifi: 802.11n configuring hw_mode parameters to support HT in A/G

[Ron Rindjunsky]

This patch fills the mac80211's ieee80211_hw_mode structures with the
needed 802.11n data needed for the new framework

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 drivers/net/wireless/iwlwifi/iwl-4965.c     |   32 ++++++++++++++++++++------
 drivers/net/wireless/iwlwifi/iwl-4965.h     |    4 +-
 drivers/net/wireless/iwlwifi/iwl4965-base.c |   26 ++++++----------------
 3 files changed, 33 insertions(+), 29 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index fed2357..0a6f6ec 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -3668,6 +3668,30 @@ static int parse_elems(u8 *start, size_t len, struct ieee802_11_elems *elems)
 
 	return 0;
 }
+
+void iwl4965_init_ht_hw_capab(struct ieee80211_ht_info *ht_info, int mode)
+{
+	ht_info->cap = 0;
+	memset(ht_info->supp_mcs_set, 0, 16);
+
+	ht_info->ht_supported = 1;
+
+	if (mode == MODE_IEEE80211A) {
+		ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH;
+		ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40;
+		ht_info->supp_mcs_set[4] = 0x01;
+	}
+	ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD;
+	ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20;
+	ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS &
+			     (IWL_MIMO_PS_NONE << 2));
+
+	ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
+	ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
+
+	ht_info->supp_mcs_set[0] = 0xFF;
+	ht_info->supp_mcs_set[1] = 0xFF;
+}
 #endif /* CONFIG_IWL4965_HT */
 
 static void iwl4965_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
@@ -4269,14 +4293,6 @@ static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id,
 
 #endif/* CONFIG_IWL4965_HT_AGG */
 #endif /* CONFIG_IWL4965_HT */
-/*
- * RATE SCALE CODE
- */
-int iwl4965_init_hw_rates(struct iwl_priv *priv, struct ieee80211_rate *rates)
-{
-	return 0;
-}
-
 
 /**
  * iwl4965_add_station - Initialize a station's hardware rate table
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.h b/drivers/net/wireless/iwlwifi/iwl-4965.h
index 71cd2b7..4a54aad 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.h
@@ -750,8 +750,6 @@ extern int iwl4965_tx_cmd(struct iwl_priv *priv, struct iwl_cmd *out_cmd,
 			  u8 sta_id, dma_addr_t txcmd_phys,
 			  struct ieee80211_hdr *hdr, u8 hdr_len,
 			  struct ieee80211_tx_control *ctrl, void *sta_in);
-extern int iwl4965_init_hw_rates(struct iwl_priv *priv,
-				 struct ieee80211_rate *rates);
 extern int iwl4965_alive_notify(struct iwl_priv *priv);
 extern void iwl4965_update_rate_scaling(struct iwl_priv *priv, u8 mode);
 extern void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index);
@@ -766,6 +764,8 @@ extern int iwl4965_set_fat_chan_info(struct iwl_priv *priv, int phymode,
 extern void iwl4965_rf_kill_ct_config(struct iwl_priv *priv);
 
 #ifdef CONFIG_IWL4965_HT
+extern void iwl4965_init_ht_hw_capab(struct ieee80211_ht_info *ht_info,
+					int mode);
 #ifdef CONFIG_IWL4965_HT_AGG
 extern int iwl_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da,
 				   u16 tid, u16 *start_seq_num);
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index d9f918b..1d0946f 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -5626,8 +5626,6 @@ static void iwl_init_hw_rates(struct iwl_priv *priv,
 		if (IWL_BASIC_RATES_MASK & (1 << i))
 			rates[i].flags |= IEEE80211_RATE_BASIC;
 	}
-
-	iwl4965_init_hw_rates(priv, rates);
 }
 
 /**
@@ -5645,10 +5643,8 @@ static int iwl_init_geos(struct iwl_priv *priv)
 		A = 0,
 		B = 1,
 		G = 2,
-		A_11N = 3,
-		G_11N = 4,
 	};
-	int mode_count = 5;
+	int mode_count = 3;
 
 	if (priv->modes) {
 		IWL_DEBUG_INFO("Geography modes already initialized.\n");
@@ -5688,6 +5684,9 @@ static int iwl_init_geos(struct iwl_priv *priv)
 	modes[A].num_rates = 8;	/* just OFDM */
 	modes[A].rates = &rates[4];
 	modes[A].num_channels = 0;
+#ifdef CONFIG_IWL4965_HT
+	iwl4965_init_ht_hw_capab(&modes[A].ht_info, MODE_IEEE80211A);
+#endif
 
 	modes[B].mode = MODE_IEEE80211B;
 	modes[B].channels = channels;
@@ -5700,18 +5699,9 @@ static int iwl_init_geos(struct iwl_priv *priv)
 	modes[G].rates = rates;
 	modes[G].num_rates = 12;	/* OFDM & CCK */
 	modes[G].num_channels = 0;
-
-	modes[G_11N].mode = MODE_IEEE80211G;
-	modes[G_11N].channels = channels;
-	modes[G_11N].num_rates = 13;        /* OFDM & CCK */
-	modes[G_11N].rates = rates;
-	modes[G_11N].num_channels = 0;
-
-	modes[A_11N].mode = MODE_IEEE80211A;
-	modes[A_11N].channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
-	modes[A_11N].rates = &rates[4];
-	modes[A_11N].num_rates = 9; /* just OFDM */
-	modes[A_11N].num_channels = 0;
+#ifdef CONFIG_IWL4965_HT
+	iwl4965_init_ht_hw_capab(&modes[G].ht_info, MODE_IEEE80211G);
+#endif
 
 	priv->ieee_channels = channels;
 	priv->ieee_rates = rates;
@@ -5731,11 +5721,9 @@ static int iwl_init_geos(struct iwl_priv *priv)
 
 		if (is_channel_a_band(ch)) {
 			geo_ch = &modes[A].channels[modes[A].num_channels++];
-			modes[A_11N].num_channels++;
 		} else {
 			geo_ch = &modes[B].channels[modes[B].num_channels++];
 			modes[G].num_channels++;
-			modes[G_11N].num_channels++;
 		}
 
 		geo_ch->freq = ieee80211chan2mhz(ch->channel);
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 11/15] iwlwifi: 802.11n handling probe request HT IE

[Ron Rindjunsky]

This patch conforms the probe request's HT IE with the
new structures used in iwlwifi HT.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 drivers/net/wireless/iwlwifi/iwl4965-base.c |   64 ++++++++++++---------------
 1 files changed, 29 insertions(+), 35 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 1d0946f..c0852ae 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -1821,9 +1821,9 @@ static u16 iwl_supported_rate_to_ie(u8 *ie, u16 supported_rate,
 
 #ifdef CONFIG_IWL4965_HT
 void static iwl_set_ht_capab(struct ieee80211_hw *hw,
-			     struct ieee80211_ht_capability *ht_cap,
-			     u8 use_wide_chan);
-#endif
+			     struct ieee80211_ht_cap *ht_cap,
+			     u8 use_current_config);
+#endif /* CONFIG_IWL4965_HT */
 
 /**
  * iwl_fill_probe_req - fill in all required fields and IE for probe request
@@ -1835,6 +1835,9 @@ static u16 iwl_fill_probe_req(struct iwl_priv *priv,
 	int len = 0;
 	u8 *pos = NULL;
 	u16 active_rates, ret_rates, cck_rates, active_rate_basic;
+#ifdef CONFIG_IWL4965_HT
+	struct ieee80211_hw_mode *mode;
+#endif /* CONFIG_IWL4965_HT */
 
 	/* Make sure there is enough space for the probe request,
 	 * two mandatory IEs and the data */
@@ -1918,17 +1921,14 @@ static u16 iwl_fill_probe_req(struct iwl_priv *priv,
 		len += 2 + *pos;
 
 #ifdef CONFIG_IWL4965_HT
-	if (is_direct && priv->is_ht_enabled) {
-		u8 use_wide_chan = 1;
-
-		if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
-			use_wide_chan = 0;
+	mode = priv->hw->conf.mode;
+	if (mode->ht_info.ht_supported) {
 		pos += (*pos) + 1;
 		*pos++ = WLAN_EID_HT_CAPABILITY;
-		*pos++ = sizeof(struct ieee80211_ht_capability);
-		iwl_set_ht_capab(NULL, (struct ieee80211_ht_capability *)pos,
-				 use_wide_chan);
-		len += 2 + sizeof(struct ieee80211_ht_capability);
+		*pos++ = sizeof(struct ieee80211_ht_cap);
+		iwl_set_ht_capab(priv->hw,
+				(struct ieee80211_ht_cap *)pos, 0);
+		len += 2 + sizeof(struct ieee80211_ht_cap);
 	}
 #endif  /*CONFIG_IWL4965_HT */
 
@@ -8160,31 +8160,25 @@ static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
 }
 
 static void iwl_set_ht_capab(struct ieee80211_hw *hw,
-			     struct ieee80211_ht_capability *ht_cap,
-			     u8 use_wide_chan)
+		struct ieee80211_ht_cap *ht_cap,
+		u8 use_current_config)
 {
-	union ht_cap_info cap;
-	union ht_param_info param_info;
+	struct ieee80211_conf *conf = &hw->conf;
+	struct ieee80211_hw_mode *mode = conf->mode;
 
-	memset(&cap, 0, sizeof(union ht_cap_info));
-	memset(&param_info, 0, sizeof(union ht_param_info));
-
-	cap.maximal_amsdu_size = HT_IE_MAX_AMSDU_SIZE_4K;
-	cap.green_field = 1;
-	cap.short_GI20 = 1;
-	cap.short_GI40 = 1;
-	cap.supported_chan_width_set = use_wide_chan;
-	cap.mimo_power_save_mode = 0x3;
-
-	param_info.max_rx_ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
-	param_info.mpdu_density = CFG_HT_MPDU_DENSITY_DEF;
-	ht_cap->capabilities_info = (__le16) cpu_to_le16(cap.val);
-	ht_cap->mac_ht_params_info = (u8) param_info.val;
-
-	ht_cap->supported_mcs_set[0] = 0xff;
-	ht_cap->supported_mcs_set[1] = 0xff;
-	ht_cap->supported_mcs_set[4] =
-	    (cap.supported_chan_width_set) ? 0x1: 0x0;
+	if (use_current_config) {
+		ht_cap->cap_info = cpu_to_le16(conf->ht_conf.cap);
+		memcpy(ht_cap->supp_mcs_set,
+				conf->ht_conf.supp_mcs_set, 16);
+	} else {
+		ht_cap->cap_info = cpu_to_le16(mode->ht_info.cap);
+		memcpy(ht_cap->supp_mcs_set,
+				mode->ht_info.supp_mcs_set, 16);
+	}
+	ht_cap->ampdu_params_info =
+		(mode->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
+		((mode->ht_info.ampdu_density << 2) &
+					IEEE80211_HT_CAP_AMPDU_DENSITY);
 }
 
 static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
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recipient, please contact the sender and delete all copies.

[PATCH 12/15] iwlwifi: 802.11n comply HT self configuration flow with mac80211 framework

[Ron Rindjunsky]

This patch conforms HW configuration changes according to new mac80211's
HT framework

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 drivers/net/wireless/iwlwifi/iwl-4965.c     |   40 +++---
 drivers/net/wireless/iwlwifi/iwl-4965.h     |    7 +-
 drivers/net/wireless/iwlwifi/iwl4965-base.c |  186 +++++++--------------------
 3 files changed, 66 insertions(+), 167 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 0a6f6ec..257dc9d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -87,8 +87,8 @@ static int is_fat_channel(__le32 rxon_flags)
 static u8 is_single_stream(struct iwl_priv *priv)
 {
 #ifdef CONFIG_IWL4965_HT
-	if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht ||
-	    (priv->active_rate_ht[1] == 0) ||
+	if (!priv->current_ht_config.is_ht ||
+	    (priv->current_ht_config.supp_mcs_set[1] == 0) ||
 	    (priv->ps_mode == IWL_MIMO_PS_STATIC))
 		return 1;
 #else
@@ -4369,27 +4369,27 @@ static u8 iwl_is_channel_extension(struct iwl_priv *priv, int phymode,
 }
 
 static u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
-				const struct sta_ht_info *ht_info)
+				struct ieee80211_ht_info *sta_ht_inf)
 {
+	struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config;
 
-	if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
+	if ((!iwl_ht_conf->is_ht) ||
+	   (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) ||
+	   (iwl_ht_conf->extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO))
 		return 0;
 
-	if (ht_info->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ)
-		return 0;
-
-	if (ht_info->extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO)
-		return 0;
+	if (sta_ht_inf) {
+		if ((!sta_ht_inf->ht_supported) ||
+		   (!sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH))
+			return 0;
+	}
 
-	/* no fat tx allowed on 2.4GHZ */
-	if (priv->phymode != MODE_IEEE80211A)
-		return 0;
 	return (iwl_is_channel_extension(priv, priv->phymode,
-					 ht_info->control_channel,
-					 ht_info->extension_chan_offset));
+					 iwl_ht_conf->control_channel,
+					 iwl_ht_conf->extension_chan_offset));
 }
 
-void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct sta_ht_info *ht_info)
+void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
 {
 	struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 	u32 val;
@@ -4397,7 +4397,7 @@ void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct sta_ht_info *ht_info)
 	if (!ht_info->is_ht)
 		return;
 
-	if (iwl_is_fat_tx_allowed(priv, ht_info))
+	if (iwl_is_fat_tx_allowed(priv, NULL))
 		rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
 	else
 		rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
@@ -4427,20 +4427,18 @@ void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct sta_ht_info *ht_info)
 		break;
 	}
 
-	val = ht_info->operating_mode;
+	val = ht_info->ht_protection;
 
 	rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
 
-	priv->active_rate_ht[0] = ht_info->supp_rates[0];
-	priv->active_rate_ht[1] = ht_info->supp_rates[1];
 	iwl4965_set_rxon_chain(priv);
 
 	IWL_DEBUG_ASSOC("supported HT rate 0x%X %X "
 			"rxon flags 0x%X operation mode :0x%X "
 			"extension channel offset 0x%x "
 			"control chan %d\n",
-			priv->active_rate_ht[0], priv->active_rate_ht[1],
-			le32_to_cpu(rxon->flags), ht_info->operating_mode,
+			ht_info->supp_mcs_set[0], ht_info->supp_mcs_set[1],
+			le32_to_cpu(rxon->flags), ht_info->ht_protection,
 			ht_info->extension_chan_offset,
 			ht_info->control_channel);
 	return;
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.h b/drivers/net/wireless/iwlwifi/iwl-4965.h
index 4a54aad..56de960 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.h
@@ -729,7 +729,7 @@ extern int iwl_hw_channel_switch(struct iwl_priv *priv, u16 channel);
 extern int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
 
 struct iwl_priv;
-struct sta_ht_info;
+struct iwl_ht_info;
 
 /*
  * Forward declare iwl-4965.c functions for iwl-base.c
@@ -742,9 +742,6 @@ extern int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv *priv,
 					  u16 byte_cnt);
 extern void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr,
 				int is_ap);
-extern void iwl4965_set_rxon_ht(struct iwl_priv *priv,
-				struct sta_ht_info *ht_info);
-
 extern void iwl4965_set_rxon_chain(struct iwl_priv *priv);
 extern int iwl4965_tx_cmd(struct iwl_priv *priv, struct iwl_cmd *out_cmd,
 			  u8 sta_id, dma_addr_t txcmd_phys,
@@ -766,6 +763,8 @@ extern void iwl4965_rf_kill_ct_config(struct iwl_priv *priv);
 #ifdef CONFIG_IWL4965_HT
 extern void iwl4965_init_ht_hw_capab(struct ieee80211_ht_info *ht_info,
 					int mode);
+extern void iwl4965_set_rxon_ht(struct iwl_priv *priv,
+				struct iwl_ht_info *ht_info);
 #ifdef CONFIG_IWL4965_HT_AGG
 extern int iwl_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da,
 				   u16 tid, u16 *start_seq_num);
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index c0852ae..60fa619 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -2057,7 +2057,7 @@ static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 			QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 
 #ifdef CONFIG_IWL4965_HT
-	if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
+	if (priv->current_ht_config.is_ht)
 		priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 #endif /* CONFIG_IWL4965_HT */
 
@@ -7124,13 +7124,8 @@ static void iwl_bg_post_associate(struct work_struct *data)
 	priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
 
 #ifdef CONFIG_IWL4965_HT
-	if (priv->is_ht_enabled && priv->current_assoc_ht.is_ht)
-		iwl4965_set_rxon_ht(priv, &priv->current_assoc_ht);
-	else {
-		priv->active_rate_ht[0] = 0;
-		priv->active_rate_ht[1] = 0;
-		priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
-	}
+	if (priv->current_ht_config.is_ht)
+		iwl4965_set_rxon_ht(priv, &priv->current_ht_config);
 #endif /* CONFIG_IWL4965_HT*/
 	iwl4965_set_rxon_chain(priv);
 	priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
@@ -7893,7 +7888,7 @@ static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
 	priv->lq_mngr.lq_ready = 0;
 #ifdef CONFIG_IWL4965_HT
 	spin_lock_irqsave(&priv->lock, flags);
-	memset(&priv->current_assoc_ht, 0, sizeof(struct sta_ht_info));
+	memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
 	spin_unlock_irqrestore(&priv->lock, flags);
 #ifdef CONFIG_IWL4965_HT_AGG
 /*	if (priv->lq_mngr.agg_ctrl.granted_ba)
@@ -8013,132 +8008,58 @@ static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
 }
 
 #ifdef CONFIG_IWL4965_HT
-union ht_cap_info {
-	struct {
-		u16 advanced_coding_cap		:1;
-		u16 supported_chan_width_set	:1;
-		u16 mimo_power_save_mode	:2;
-		u16 green_field			:1;
-		u16 short_GI20			:1;
-		u16 short_GI40			:1;
-		u16 tx_stbc			:1;
-		u16 rx_stbc			:1;
-		u16 beam_forming		:1;
-		u16 delayed_ba			:1;
-		u16 maximal_amsdu_size		:1;
-		u16 cck_mode_at_40MHz		:1;
-		u16 psmp_support		:1;
-		u16 stbc_ctrl_frame_support	:1;
-		u16 sig_txop_protection_support	:1;
-	};
-	u16 val;
-} __attribute__ ((packed));
-
-union ht_param_info{
-	struct {
-		u8 max_rx_ampdu_factor	:2;
-		u8 mpdu_density		:3;
-		u8 reserved		:3;
-	};
-	u8 val;
-} __attribute__ ((packed));
-
-union ht_exra_param_info {
-	struct {
-		u8 ext_chan_offset		:2;
-		u8 tx_chan_width		:1;
-		u8 rifs_mode			:1;
-		u8 controlled_access_only	:1;
-		u8 service_interval_granularity	:3;
-	};
-	u8 val;
-} __attribute__ ((packed));
-
-union ht_operation_mode{
-	struct {
-		u16 op_mode	:2;
-		u16 non_GF	:1;
-		u16 reserved	:13;
-	};
-	u16 val;
-} __attribute__ ((packed));
 
-
-static int sta_ht_info_init(struct ieee80211_ht_capability *ht_cap,
-			    struct ieee80211_ht_additional_info *ht_extra,
-			    struct sta_ht_info *ht_info_ap,
-			    struct sta_ht_info *ht_info)
+static void iwl_ht_info_fill(struct ieee80211_conf *conf, struct iwl_priv *priv)
 {
-	union ht_cap_info cap;
-	union ht_operation_mode op_mode;
-	union ht_param_info param_info;
-	union ht_exra_param_info extra_param_info;
+	struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
+	struct ieee80211_ht_info *ht_conf = &conf->ht_conf;
+	struct ieee80211_ht_bss_info *ht_bss_conf = &conf->ht_bss_conf;
 
 	IWL_DEBUG_MAC80211("enter: \n");
 
-	if (!ht_info) {
-		IWL_DEBUG_MAC80211("leave: ht_info is NULL\n");
-		return -1;
+	if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) {
+		iwl_conf->is_ht = 0;
+		return;
 	}
 
-	if (ht_cap) {
-		cap.val = (u16) le16_to_cpu(ht_cap->capabilities_info);
-		param_info.val = ht_cap->mac_ht_params_info;
-		ht_info->is_ht = 1;
-		if (cap.short_GI20)
-			ht_info->sgf |= 0x1;
-		if (cap.short_GI40)
-			ht_info->sgf |= 0x2;
-		ht_info->is_green_field = cap.green_field;
-		ht_info->max_amsdu_size = cap.maximal_amsdu_size;
-		ht_info->supported_chan_width = cap.supported_chan_width_set;
-		ht_info->tx_mimo_ps_mode = cap.mimo_power_save_mode;
-		memcpy(ht_info->supp_rates, ht_cap->supported_mcs_set, 16);
-
-		ht_info->ampdu_factor = param_info.max_rx_ampdu_factor;
-		ht_info->mpdu_density = param_info.mpdu_density;
-
-		IWL_DEBUG_MAC80211("SISO mask 0x%X MIMO mask 0x%X \n",
-				    ht_cap->supported_mcs_set[0],
-				    ht_cap->supported_mcs_set[1]);
-
-		if (ht_info_ap) {
-			ht_info->control_channel = ht_info_ap->control_channel;
-			ht_info->extension_chan_offset =
-				ht_info_ap->extension_chan_offset;
-			ht_info->tx_chan_width = ht_info_ap->tx_chan_width;
-			ht_info->operating_mode = ht_info_ap->operating_mode;
-		}
-
-		if (ht_extra) {
-			extra_param_info.val = ht_extra->ht_param;
-			ht_info->control_channel = ht_extra->control_chan;
-			ht_info->extension_chan_offset =
-			    extra_param_info.ext_chan_offset;
-			ht_info->tx_chan_width = extra_param_info.tx_chan_width;
-			op_mode.val = (u16)
-			    le16_to_cpu(ht_extra->operation_mode);
-			ht_info->operating_mode = op_mode.op_mode;
-			IWL_DEBUG_MAC80211("control channel %d\n",
-					    ht_extra->control_chan);
-		}
-	} else
-		ht_info->is_ht = 0;
-
+	iwl_conf->is_ht = 1;
+	priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
+
+	if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
+		iwl_conf->sgf |= 0x1;
+	if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
+		iwl_conf->sgf |= 0x2;
+
+	iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
+	iwl_conf->max_amsdu_size =
+		!!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
+	iwl_conf->supported_chan_width =
+		!!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
+	iwl_conf->tx_mimo_ps_mode =
+		(u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
+	memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
+
+	iwl_conf->control_channel = ht_bss_conf->primary_channel;
+	iwl_conf->extension_chan_offset =
+		ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
+	iwl_conf->tx_chan_width =
+		!!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
+	iwl_conf->ht_protection =
+		ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
+	iwl_conf->non_GF_STA_present =
+		!!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
+
+	IWL_DEBUG_MAC80211("control channel %d\n",
+		iwl_conf->control_channel);
 	IWL_DEBUG_MAC80211("leave\n");
-	return 0;
 }
 
-static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
-			   struct ieee80211_ht_capability *ht_cap,
-			   struct ieee80211_ht_additional_info *ht_extra)
+static int iwl_mac_conf_ht(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 {
 	struct iwl_priv *priv = hw->priv;
-	int rs;
 
 	IWL_DEBUG_MAC80211("enter: \n");
-
-	rs = sta_ht_info_init(ht_cap, ht_extra, NULL, &priv->current_assoc_ht);
+	iwl_ht_info_fill(conf, priv);
 	iwl4965_set_rxon_chain(priv);
 
 	if (priv && priv->assoc_id &&
@@ -8153,9 +8074,8 @@ static int iwl_mac_conf_ht(struct ieee80211_hw *hw,
 		spin_unlock_irqrestore(&priv->lock, flags);
 	}
 
-	IWL_DEBUG_MAC80211("leave: control channel %d\n",
-			ht_extra->control_chan);
-	return rs;
+	IWL_DEBUG_MAC80211("leave:\n");
+	return 0;
 
 }
 
@@ -8181,23 +8101,6 @@ static void iwl_set_ht_capab(struct ieee80211_hw *hw,
 					IEEE80211_HT_CAP_AMPDU_DENSITY);
 }
 
-static void iwl_mac_get_ht_capab(struct ieee80211_hw *hw,
-				 struct ieee80211_ht_capability *ht_cap)
-{
-	u8 use_wide_channel = 1;
-	struct iwl_priv *priv = hw->priv;
-
-	IWL_DEBUG_MAC80211("enter: \n");
-	if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
-		use_wide_channel = 0;
-
-	/* no fat tx allowed on 2.4GHZ */
-	if (priv->phymode != MODE_IEEE80211A)
-		use_wide_channel = 0;
-
-	iwl_set_ht_capab(hw, ht_cap, use_wide_channel);
-	IWL_DEBUG_MAC80211("leave: \n");
-}
 #endif /*CONFIG_IWL4965_HT*/
 
 /*****************************************************************************
@@ -8914,7 +8817,6 @@ static struct ieee80211_ops iwl_hw_ops = {
 	.erp_ie_changed = iwl_mac_erp_ie_changed,
 #ifdef CONFIG_IWL4965_HT
 	.conf_ht = iwl_mac_conf_ht,
-	.get_ht_capab = iwl_mac_get_ht_capab,
 #ifdef CONFIG_IWL4965_HT_AGG
 	.ht_tx_agg_start = iwl_mac_ht_tx_agg_start,
 	.ht_tx_agg_stop = iwl_mac_ht_tx_agg_stop,
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 13/15] iwlwifi: 802.11n comply HT add station flow with mac80211 framework

[Ron Rindjunsky]

This patch conforms the addition of a new station to the iwlwifi station
table according to the new mac80211's HT framework

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 drivers/net/wireless/iwlwifi/iwl-4965-rs.c  |    8 +++---
 drivers/net/wireless/iwlwifi/iwl-4965.c     |   28 ++++++++++----------------
 drivers/net/wireless/iwlwifi/iwl-4965.h     |    8 +++---
 drivers/net/wireless/iwlwifi/iwl4965-base.c |   23 ++++++++++++++++++---
 4 files changed, 38 insertions(+), 29 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
index 9d7b029..9b213a1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
@@ -1725,8 +1725,8 @@ static struct ieee80211_rate *rs_get_rate(void *priv_rate,
 		if (sta_id == IWL_INVALID_STATION) {
 			IWL_DEBUG_RATE("LQ: ADD station %s\n",
 				       print_mac(mac, hdr->addr1));
-			sta_id = iwl_add_station(priv,
-						 hdr->addr1, 0, CMD_ASYNC);
+			sta_id = iwl_add_station(priv, hdr->addr1,
+						 0, CMD_ASYNC, NULL);
 		}
 		if ((sta_id != IWL_INVALID_STATION)) {
 			lq->lq.sta_id = sta_id;
@@ -1801,8 +1801,8 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
 		if (sta_id == IWL_INVALID_STATION) {
 			IWL_DEBUG_RATE("LQ: ADD station %s\n",
 				       print_mac(mac, sta->addr));
-			sta_id = iwl_add_station(priv,
-						 sta->addr, 0, CMD_ASYNC);
+			sta_id = iwl_add_station(priv, sta->addr,
+						 0, CMD_ASYNC, NULL);
 		}
 		if ((sta_id != IWL_INVALID_STATION)) {
 			crl->lq.sta_id = sta_id;
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 257dc9d..85b84db 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -4444,39 +4444,33 @@ void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info)
 	return;
 }
 
-void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index)
+void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index,
+				struct ieee80211_ht_info *sta_ht_inf)
 {
 	__le32 sta_flags;
-	struct sta_ht_info *ht_info = &priv->current_assoc_ht;
 
-	priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
-	if (!ht_info->is_ht)
+	if (!sta_ht_inf || !sta_ht_inf->ht_supported)
 		goto done;
 
 	sta_flags = priv->stations[index].sta.station_flags;
 
-	if (ht_info->tx_mimo_ps_mode == IWL_MIMO_PS_DYNAMIC)
+	if (((sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS >> 2))
+						== IWL_MIMO_PS_DYNAMIC)
 		sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
 	else
 		sta_flags &= ~STA_FLG_RTS_MIMO_PROT_MSK;
 
 	sta_flags |= cpu_to_le32(
-		(u32)ht_info->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
+	      (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
 
 	sta_flags |= cpu_to_le32(
-		(u32)ht_info->mpdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
-
-	sta_flags &= (~STA_FLG_FAT_EN_MSK);
-	ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_20MHZ;
-	ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_20MHZ;
+	      (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
 
-	if (iwl_is_fat_tx_allowed(priv, ht_info)) {
+	if (iwl_is_fat_tx_allowed(priv, sta_ht_inf))
 		sta_flags |= STA_FLG_FAT_EN_MSK;
-		ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_40MHZ;
-		if (ht_info->supported_chan_width == IWL_CHANNEL_WIDTH_40MHZ)
-			ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_40MHZ;
-	}
-	priv->current_channel_width = ht_info->tx_chan_width;
+	else
+		sta_flags &= (~STA_FLG_FAT_EN_MSK);
+
 	priv->stations[index].sta.station_flags = sta_flags;
  done:
 	return;
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.h b/drivers/net/wireless/iwlwifi/iwl-4965.h
index 56de960..3494fc5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.h
@@ -612,8 +612,8 @@ struct iwl_driver_hw_info {
 struct iwl_addsta_cmd;
 extern int iwl_send_add_station(struct iwl_priv *priv,
 				struct iwl_addsta_cmd *sta, u8 flags);
-extern u8 iwl_add_station(struct iwl_priv *priv, const u8 *bssid,
-			  int is_ap, u8 flags);
+extern u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr,
+			  int is_ap, u8 flags, void *ht_data);
 extern int iwl_is_network_packet(struct iwl_priv *priv,
 				 struct ieee80211_hdr *header);
 extern int iwl_power_init_handle(struct iwl_priv *priv);
@@ -749,8 +749,6 @@ extern int iwl4965_tx_cmd(struct iwl_priv *priv, struct iwl_cmd *out_cmd,
 			  struct ieee80211_tx_control *ctrl, void *sta_in);
 extern int iwl4965_alive_notify(struct iwl_priv *priv);
 extern void iwl4965_update_rate_scaling(struct iwl_priv *priv, u8 mode);
-extern void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index);
-
 extern void iwl4965_chain_noise_reset(struct iwl_priv *priv);
 extern void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags,
 				     u8 force);
@@ -765,6 +763,8 @@ extern void iwl4965_init_ht_hw_capab(struct ieee80211_ht_info *ht_info,
 					int mode);
 extern void iwl4965_set_rxon_ht(struct iwl_priv *priv,
 				struct iwl_ht_info *ht_info);
+extern void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index,
+		struct ieee80211_ht_info *sta_ht_inf);
 #ifdef CONFIG_IWL4965_HT_AGG
 extern int iwl_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da,
 				   u16 tid, u16 *start_seq_num);
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 60fa619..0283172 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -456,7 +456,8 @@ static void iwl_clear_stations_table(struct iwl_priv *priv)
 	spin_unlock_irqrestore(&priv->sta_lock, flags);
 }
 
-u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
+u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr,
+			int is_ap, u8 flags, void *ht_data)
 {
 	int i;
 	int index = IWL_INVALID_STATION;
@@ -512,7 +513,8 @@ u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap, u8 flags)
 	/* BCAST station and IBSS stations do not work in HT mode */
 	if (index != priv->hw_setting.bcast_sta_id &&
 	    priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
-		iwl4965_set_ht_add_station(priv, index);
+		iwl4965_set_ht_add_station(priv, index,
+				 (struct ieee80211_ht_info *) ht_data);
 #endif /*CONFIG_IWL4965_HT*/
 
 	spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
@@ -851,7 +853,20 @@ static int iwl_rxon_add_station(struct iwl_priv *priv,
 {
 	u8 sta_id;
 
-	sta_id = iwl_add_station(priv, addr, is_ap, 0);
+#ifdef CONFIG_IWL4965_HT
+	struct ieee80211_conf *conf = &priv->hw->conf;
+	struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
+
+	if ((is_ap) &&
+	    (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
+	    (priv->iw_mode == IEEE80211_IF_TYPE_STA))
+		sta_id = iwl_add_station(priv, addr, is_ap,
+					0, cur_ht_config);
+	else
+#endif /* CONFIG_IWL4965_HT */
+		sta_id = iwl_add_station(priv, addr, is_ap,
+					 0, NULL);
+
 	iwl4965_add_station(priv, addr, is_ap);
 
 	return sta_id;
@@ -2773,7 +2788,7 @@ static int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
 		if (sta_id != IWL_INVALID_STATION)
 			return sta_id;
 
-		sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC);
+		sta_id = iwl_add_station(priv, hdr->addr1, 0, CMD_ASYNC, NULL);
 
 		if (sta_id != IWL_INVALID_STATION)
 			return sta_id;
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 14/15] iwlwifi: 802.11n comply HT rate scaling flows with mac80211 framework

[Ron Rindjunsky]

This patch conforms the rate scaling flows according to the new mac80211's
HT framework

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 drivers/net/wireless/iwlwifi/iwl-4965-rs.c |   93 +++++++++++++++++-----------
 1 files changed, 57 insertions(+), 36 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
index 9b213a1..cdaf45a 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
@@ -440,15 +440,14 @@ static inline void rs_toggle_antenna(struct iwl_rate *new_rate,
 	}
 }
 
-static inline u8 rs_use_green(struct iwl_priv *priv)
+static inline u8 rs_use_green(struct iwl_priv *priv,
+			      struct ieee80211_conf *conf)
 {
 #ifdef CONFIG_IWL4965_HT
-	if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht)
-		return 0;
-
-	return ((priv->current_assoc_ht.is_green_field) &&
-	    !(priv->current_assoc_ht.operating_mode & 0x4));
-#endif	/*CONFIG_IWL4965_HT */
+	return ((conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
+		priv->current_ht_config.is_green_field &&
+		!priv->current_ht_config.non_GF_STA_present);
+#endif	/* CONFIG_IWL4965_HT */
 	return 0;
 }
 
@@ -888,6 +887,8 @@ static inline u8 rs_is_both_ant_supp(u8 valid_antenna)
 
 static int rs_switch_to_mimo(struct iwl_priv *priv,
 			     struct iwl_rate_scale_priv *lq_data,
+			     struct ieee80211_conf *conf,
+			     struct sta_info *sta,
 			     struct iwl_scale_tbl_info *tbl, int index)
 {
 #ifdef CONFIG_IWL4965_HT
@@ -895,7 +896,8 @@ static int rs_switch_to_mimo(struct iwl_priv *priv,
 	s32 rate;
 	s8 is_green = lq_data->is_green;
 
-	if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht)
+	if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) ||
+	    !sta->ht_info.ht_supported)
 		return -1;
 
 	IWL_DEBUG_HT("LQ: try to switch to MIMO\n");
@@ -903,7 +905,7 @@ static int rs_switch_to_mimo(struct iwl_priv *priv,
 	rs_get_supported_rates(lq_data, NULL, tbl->lq_type,
 				&rate_mask);
 
-	if (priv->current_assoc_ht.tx_mimo_ps_mode == IWL_MIMO_PS_STATIC)
+	if (priv->current_ht_config.tx_mimo_ps_mode == IWL_MIMO_PS_STATIC)
 		return -1;
 
 	if (!rs_is_both_ant_supp(lq_data->antenna))
@@ -911,17 +913,18 @@ static int rs_switch_to_mimo(struct iwl_priv *priv,
 
 	tbl->is_dup = lq_data->is_dup;
 	tbl->action = 0;
-	if (priv->current_channel_width == IWL_CHANNEL_WIDTH_40MHZ)
+	if (priv->current_ht_config.supported_chan_width
+	    == IWL_CHANNEL_WIDTH_40MHZ)
 		tbl->is_fat = 1;
 	else
 		tbl->is_fat = 0;
 
 	if (tbl->is_fat) {
-		if (priv->current_assoc_ht.sgf & HT_SHORT_GI_40MHZ_ONLY)
+		if (priv->current_ht_config.sgf & HT_SHORT_GI_40MHZ_ONLY)
 			tbl->is_SGI = 1;
 		else
 			tbl->is_SGI = 0;
-	} else if (priv->current_assoc_ht.sgf & HT_SHORT_GI_20MHZ_ONLY)
+	} else if (priv->current_ht_config.sgf & HT_SHORT_GI_20MHZ_ONLY)
 		tbl->is_SGI = 1;
 	else
 		tbl->is_SGI = 0;
@@ -944,6 +947,8 @@ static int rs_switch_to_mimo(struct iwl_priv *priv,
 
 static int rs_switch_to_siso(struct iwl_priv *priv,
 			     struct iwl_rate_scale_priv *lq_data,
+			     struct ieee80211_conf *conf,
+			     struct sta_info *sta,
 			     struct iwl_scale_tbl_info *tbl, int index)
 {
 #ifdef CONFIG_IWL4965_HT
@@ -952,7 +957,8 @@ static int rs_switch_to_siso(struct iwl_priv *priv,
 	s32 rate;
 
 	IWL_DEBUG_HT("LQ: try to switch to SISO\n");
-	if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht)
+	if (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) ||
+	    !sta->ht_info.ht_supported)
 		return -1;
 
 	tbl->is_dup = lq_data->is_dup;
@@ -961,17 +967,18 @@ static int rs_switch_to_siso(struct iwl_priv *priv,
 	rs_get_supported_rates(lq_data, NULL, tbl->lq_type,
 				&rate_mask);
 
-	if (priv->current_channel_width == IWL_CHANNEL_WIDTH_40MHZ)
+	if (priv->current_ht_config.supported_chan_width
+	    == IWL_CHANNEL_WIDTH_40MHZ)
 		tbl->is_fat = 1;
 	else
 		tbl->is_fat = 0;
 
 	if (tbl->is_fat) {
-		if (priv->current_assoc_ht.sgf & HT_SHORT_GI_40MHZ_ONLY)
+		if (priv->current_ht_config.sgf & HT_SHORT_GI_40MHZ_ONLY)
 			tbl->is_SGI = 1;
 		else
 			tbl->is_SGI = 0;
-	} else if (priv->current_assoc_ht.sgf & HT_SHORT_GI_20MHZ_ONLY)
+	} else if (priv->current_ht_config.sgf & HT_SHORT_GI_20MHZ_ONLY)
 		tbl->is_SGI = 1;
 	else
 		tbl->is_SGI = 0;
@@ -998,6 +1005,8 @@ static int rs_switch_to_siso(struct iwl_priv *priv,
 
 static int rs_move_legacy_other(struct iwl_priv *priv,
 				struct iwl_rate_scale_priv *lq_data,
+				struct ieee80211_conf *conf,
+				struct sta_info *sta,
 				int index)
 {
 	int ret = 0;
@@ -1037,8 +1046,8 @@ static int rs_move_legacy_other(struct iwl_priv *priv,
 			search_tbl->lq_type = LQ_SISO;
 			search_tbl->is_SGI = 0;
 			search_tbl->is_fat = 0;
-			ret = rs_switch_to_siso(priv, lq_data, search_tbl,
-					       index);
+			ret = rs_switch_to_siso(priv, lq_data, conf, sta,
+						 search_tbl, index);
 			if (!ret) {
 				lq_data->search_better_tbl = 1;
 				lq_data->action_counter = 0;
@@ -1053,8 +1062,8 @@ static int rs_move_legacy_other(struct iwl_priv *priv,
 			search_tbl->is_SGI = 0;
 			search_tbl->is_fat = 0;
 			search_tbl->antenna_type = ANT_BOTH;
-			ret = rs_switch_to_mimo(priv, lq_data, search_tbl,
-					       index);
+			ret = rs_switch_to_mimo(priv, lq_data, conf, sta,
+						 search_tbl, index);
 			if (!ret) {
 				lq_data->search_better_tbl = 1;
 				lq_data->action_counter = 0;
@@ -1082,6 +1091,8 @@ static int rs_move_legacy_other(struct iwl_priv *priv,
 
 static int rs_move_siso_to_other(struct iwl_priv *priv,
 				 struct iwl_rate_scale_priv *lq_data,
+				 struct ieee80211_conf *conf,
+				 struct sta_info *sta,
 				 int index)
 {
 	int ret;
@@ -1122,8 +1133,8 @@ static int rs_move_siso_to_other(struct iwl_priv *priv,
 			search_tbl->is_SGI = 0;
 			search_tbl->is_fat = 0;
 			search_tbl->antenna_type = ANT_BOTH;
-			ret = rs_switch_to_mimo(priv, lq_data, search_tbl,
-					       index);
+			ret = rs_switch_to_mimo(priv, lq_data, conf, sta,
+						 search_tbl, index);
 			if (!ret) {
 				lq_data->search_better_tbl = 1;
 				goto out;
@@ -1172,6 +1183,8 @@ static int rs_move_siso_to_other(struct iwl_priv *priv,
 
 static int rs_move_mimo_to_other(struct iwl_priv *priv,
 				 struct iwl_rate_scale_priv *lq_data,
+				 struct ieee80211_conf *conf,
+				 struct sta_info *sta,
 				 int index)
 {
 	int ret;
@@ -1199,8 +1212,8 @@ static int rs_move_mimo_to_other(struct iwl_priv *priv,
 			else
 				search_tbl->antenna_type = ANT_AUX;
 
-			ret = rs_switch_to_siso(priv, lq_data, search_tbl,
-					       index);
+			ret = rs_switch_to_siso(priv, lq_data, conf, sta,
+						 search_tbl, index);
 			if (!ret) {
 				lq_data->search_better_tbl = 1;
 				goto out;
@@ -1307,6 +1320,9 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
 				  struct ieee80211_hdr *hdr,
 				  struct sta_info *sta)
 {
+	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_hw *hw = local_to_hw(local);
+	struct ieee80211_conf *conf = &hw->conf;
 	int low = IWL_RATE_INVALID;
 	int high = IWL_RATE_INVALID;
 	int index;
@@ -1545,11 +1561,11 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
 		lq_data->last_tpt = current_tpt;
 
 		if (is_legacy(tbl->lq_type))
-			rs_move_legacy_other(priv, lq_data, index);
+			rs_move_legacy_other(priv, lq_data, conf, sta, index);
 		else if (is_siso(tbl->lq_type))
-			rs_move_siso_to_other(priv, lq_data, index);
+			rs_move_siso_to_other(priv, lq_data, conf, sta, index);
 		else
-			rs_move_mimo_to_other(priv, lq_data, index);
+			rs_move_mimo_to_other(priv, lq_data, conf, sta, index);
 
 		if (lq_data->search_better_tbl) {
 			tbl = &(lq_data->lq_info[(1 - lq_data->active_tbl)]);
@@ -1569,7 +1585,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
 
 		if (is_legacy(tbl1->lq_type) &&
 #ifdef CONFIG_IWL4965_HT
-		    !priv->current_assoc_ht.is_ht &&
+		   (!(conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE)) &&
 #endif
 		    (lq_data->action_counter >= 1)) {
 			lq_data->action_counter = 0;
@@ -1613,6 +1629,7 @@ out:
 
 
 static void rs_initialize_lq(struct iwl_priv *priv,
+			     struct ieee80211_conf *conf,
 			     struct sta_info *sta)
 {
 	int i;
@@ -1620,7 +1637,7 @@ static void rs_initialize_lq(struct iwl_priv *priv,
 	struct iwl_scale_tbl_info *tbl;
 	u8 active_tbl = 0;
 	int rate_idx;
-	u8 use_green = rs_use_green(priv);
+	u8 use_green = rs_use_green(priv, conf);
 	struct iwl_rate mcs_rate;
 
 	if (!sta || !sta->rate_ctrl_priv)
@@ -1689,6 +1706,7 @@ static struct ieee80211_rate *rs_get_rate(void *priv_rate,
 
 	int i;
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+	struct ieee80211_conf *conf = &local->hw.conf;
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	struct sta_info *sta;
 	u16 fc;
@@ -1732,7 +1750,7 @@ static struct ieee80211_rate *rs_get_rate(void *priv_rate,
 			lq->lq.sta_id = sta_id;
 			lq->lq.rs_table[0].rate_n_flags = 0;
 			lq->ibss_sta_added = 1;
-			rs_initialize_lq(priv, sta);
+			rs_initialize_lq(priv, conf, sta);
 		}
 		if (!lq->ibss_sta_added)
 			goto done;
@@ -1772,6 +1790,7 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
 			 struct sta_info *sta)
 {
 	int i, j;
+	struct ieee80211_conf *conf = &local->hw.conf;
 	struct ieee80211_hw_mode *mode = local->oper_hw_mode;
 	struct iwl_priv *priv = (struct iwl_priv *)priv_rate;
 	struct iwl_rate_scale_priv *crl = priv_sta;
@@ -1827,19 +1846,21 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
 	crl->is_dup = 0;
 	crl->valid_antenna = priv->valid_antenna;
 	crl->antenna = priv->antenna;
-	crl->is_green = rs_use_green(priv);
+	crl->is_green = rs_use_green(priv, conf);
 	crl->active_rate = priv->active_rate;
 	crl->active_rate &= ~(0x1000);
 	crl->active_rate_basic = priv->active_rate_basic;
 	crl->phymode = priv->phymode;
 #ifdef CONFIG_IWL4965_HT
-	crl->active_siso_rate = (priv->current_assoc_ht.supp_rates[0] << 1);
-	crl->active_siso_rate |= (priv->current_assoc_ht.supp_rates[0] & 0x1);
+	crl->active_siso_rate = (priv->current_ht_config.supp_mcs_set[0] << 1);
+	crl->active_siso_rate |=
+			(priv->current_ht_config.supp_mcs_set[0] & 0x1);
 	crl->active_siso_rate &= ~((u16)0x2);
 	crl->active_siso_rate = crl->active_siso_rate << IWL_FIRST_OFDM_RATE;
 
-	crl->active_mimo_rate = (priv->current_assoc_ht.supp_rates[1] << 1);
-	crl->active_mimo_rate |= (priv->current_assoc_ht.supp_rates[1] & 0x1);
+	crl->active_mimo_rate = (priv->current_ht_config.supp_mcs_set[1] << 1);
+	crl->active_mimo_rate |=
+			(priv->current_ht_config.supp_mcs_set[1] & 0x1);
 	crl->active_mimo_rate &= ~((u16)0x2);
 	crl->active_mimo_rate = crl->active_mimo_rate << IWL_FIRST_OFDM_RATE;
 	IWL_DEBUG_HT("MIMO RATE 0x%X SISO MASK 0x%X\n", crl->active_siso_rate,
@@ -1852,7 +1873,7 @@ static void rs_rate_init(void *priv_rate, void *priv_sta,
 	if (priv->assoc_station_added)
 		priv->lq_mngr.lq_ready = 1;
 
-	rs_initialize_lq(priv, sta);
+	rs_initialize_lq(priv, conf, sta);
 }
 
 static void rs_fill_link_cmd(struct iwl_rate_scale_priv *lq_data,
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.

[PATCH 15/15] iwlwifi: 802.11n add support to 8K A-MSDU Rx frames

[Ron Rindjunsky]

This patch give the iwlwifi the ability to support A-MSDU up to 8K

Please notice - in order to work in 8K A-MSDU ucode support is needed,
version 4.44.1.19 (soon to be published). 4K A-MSDU works in current ucode
version as well.

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
---
 drivers/net/wireless/iwlwifi/iwl-3945-hw.h  |    1 -
 drivers/net/wireless/iwlwifi/iwl-3945.c     |    3 ++-
 drivers/net/wireless/iwlwifi/iwl-3945.h     |    5 +++--
 drivers/net/wireless/iwlwifi/iwl-4965-hw.h  |   14 +++++++++-----
 drivers/net/wireless/iwlwifi/iwl-4965.c     |   20 +++++++++++++++++---
 drivers/net/wireless/iwlwifi/iwl-4965.h     |    5 +++--
 drivers/net/wireless/iwlwifi/iwl4965-base.c |   21 ++++++++++++++-------
 7 files changed, 48 insertions(+), 21 deletions(-)

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h
index 0a5a08d..fb362ff 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h
@@ -691,7 +691,6 @@ struct iwl_eeprom {
 #define RX_LOW_WATERMARK 8
 
 
-#define IWL_RX_BUF_SIZE 3000
 /* card static random access memory (SRAM) for processor data and instructs */
 #define ALM_RTC_INST_UPPER_BOUND		(0x014000)
 #define ALM_RTC_DATA_UPPER_BOUND		(0x808000)
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index e9cb40e..4cd0ed8 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -2197,7 +2197,8 @@ int iwl_hw_set_hw_setting(struct iwl_priv *priv)
 	}
 
 	priv->hw_setting.ac_queue_count = AC_NUM;
-	priv->hw_setting.rx_buffer_size = IWL_RX_BUF_SIZE;
+	priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE;
+	priv->hw_setting.max_pkt_size = 2342;
 	priv->hw_setting.tx_cmd_len = sizeof(struct iwl_tx_cmd);
 	priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE;
 	priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG;
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h
index d1616bf..a5332ac 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.h
@@ -72,6 +72,7 @@ enum iwl_antenna {
  * else RTS for data/management frames where MPDU is larger
  *   than RTS value.
  */
+#define IWL_RX_BUF_SIZE           3000U
 #define DEFAULT_RTS_THRESHOLD     2347U
 #define MIN_RTS_THRESHOLD         0U
 #define MAX_RTS_THRESHOLD         2347U
@@ -447,7 +448,6 @@ union iwl_ht_rate_supp {
 
 #ifdef CONFIG_IWL3945_HT
 #define CFG_HT_RX_AMPDU_FACTOR_DEF  (0x3)
-#define HT_IE_MAX_AMSDU_SIZE_4K     (0)
 #define CFG_HT_MPDU_DENSITY_2USEC   (0x5)
 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC
 
@@ -552,7 +552,8 @@ struct iwl_driver_hw_info {
 	u16 ac_queue_count;
 	u16 tx_cmd_len;
 	u16 max_rxq_size;
-	u32 rx_buffer_size;
+	u32 rx_buf_size;
+	u32 max_pkt_size;
 	u16 max_rxq_log;
 	u8  max_stations;
 	u8  bcast_sta_id;
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-hw.h b/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
index 21c7577..61b57ac 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
@@ -740,8 +740,8 @@ struct iwl_eeprom {
 #define RX_FREE_BUFFERS 64
 #define RX_LOW_WATERMARK 8
 
-
-#define IWL_RX_BUF_SIZE (4 * 1024)
+#define IWL_RX_BUF_SIZE_4K (4 * 1024)
+#define IWL_RX_BUF_SIZE_8K (8 * 1024)
 #define IWL_MAX_BSM_SIZE BSM_SRAM_SIZE
 #define KDR_RTC_INST_UPPER_BOUND		(0x018000)
 #define KDR_RTC_DATA_UPPER_BOUND		(0x80A000)
@@ -1055,15 +1055,19 @@ union iwl_tx_power_dual_stream {
 #define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_MASK     (0x00001000) /* bit 12 */
 #define FH_RCSR_CHNL0_RX_CONFIG_RB_TIMEOUT_MASK   (0x00000FF0) /* bit 4-11 */
 
-#define FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT       (20)
-#define FH_RCSR_RX_CONFIG_RB_SIZE_BITSHIFT			(16)
+#define FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT	(20)
+#define FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_BITSHIFT	(4)
+#define RX_RB_TIMEOUT	(0x10)
 
 /* RCSR: rx_config register values */
 #define FH_RCSR_RX_CONFIG_CHNL_EN_PAUSE_VAL         (0x00000000)
 #define FH_RCSR_RX_CONFIG_CHNL_EN_PAUSE_EOF_VAL     (0x40000000)
 #define FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL        (0x80000000)
 
-#define IWL_FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K    (0x00000000)
+#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K    (0x00000000)
+#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K    (0x00010000)
+#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_12K   (0x00020000)
+#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_16K   (0x00030000)
 
 /* RCSR channel 0 config register values */
 #define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_NO_INT_VAL       (0x00000000)
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 85b84db..2d8d14f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -226,6 +226,7 @@ static int iwl4965_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 {
 	int rc;
 	unsigned long flags;
+	unsigned int rb_size;
 
 	spin_lock_irqsave(&priv->lock, flags);
 	rc = iwl_grab_nic_access(priv);
@@ -234,6 +235,11 @@ static int iwl4965_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 		return rc;
 	}
 
+	if (iwl_param_amsdu_size_8K)
+		rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K;
+	else
+		rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K;
+
 	/* stop HW */
 	iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
 
@@ -248,7 +254,7 @@ static int iwl4965_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 	iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG,
 			     FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL |
 			     FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL |
-			     IWL_FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K |
+			     rb_size |
 			     /*0x10 << 4 | */
 			     (RX_QUEUE_SIZE_LOG <<
 			      FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT));
@@ -1721,7 +1727,11 @@ int iwl_hw_set_hw_setting(struct iwl_priv *priv)
 	priv->hw_setting.tx_cmd_len = sizeof(struct iwl_tx_cmd);
 	priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE;
 	priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG;
-
+	if (iwl_param_amsdu_size_8K)
+		priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE_8K;
+	else
+		priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE_4K;
+	priv->hw_setting.max_pkt_size = priv->hw_setting.rx_buf_size - 256;
 	priv->hw_setting.max_stations = IWL4965_STATION_COUNT;
 	priv->hw_setting.bcast_sta_id = IWL4965_BROADCAST_ID;
 	return 0;
@@ -3519,7 +3529,7 @@ static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data,
 		rx_start->byte_count = amsdu->byte_count;
 		rx_end = (__le32 *) (((u8 *) hdr) + len);
 	}
-	if (len > IWL_RX_BUF_SIZE || len < 16) {
+	if (len > priv->hw_setting.max_pkt_size || len < 16) {
 		IWL_WARNING("byte count out of range [16,4K]"

 			       " : %d\n", len);
 		return;
@@ -3685,6 +3695,10 @@ void iwl4965_init_ht_hw_capab(struct ieee80211_ht_info *ht_info, int mode)
 	ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20;
 	ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS &
 			     (IWL_MIMO_PS_NONE << 2));
+	if (iwl_param_amsdu_size_8K) {
+		printk(KERN_DEBUG "iwl4965 in A-MSDU 8K support mode\n");
+		ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU;
+	}
 
 	ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
 	ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.h b/drivers/net/wireless/iwlwifi/iwl-4965.h
index 3494fc5..2ac9173 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.h
@@ -56,6 +56,7 @@ extern struct pci_device_id iwl_hw_card_ids[];
 /* Module parameters accessible from iwl-*.c */
 extern int iwl_param_hwcrypto;
 extern int iwl_param_queues_num;
+extern int iwl_param_amsdu_size_8K;
 
 enum iwl_antenna {
 	IWL_ANTENNA_DIVERSITY,
@@ -473,7 +474,6 @@ union iwl_ht_rate_supp {
 
 #ifdef CONFIG_IWL4965_HT
 #define CFG_HT_RX_AMPDU_FACTOR_DEF  (0x3)
-#define HT_IE_MAX_AMSDU_SIZE_4K     (0)
 #define CFG_HT_MPDU_DENSITY_2USEC   (0x5)
 #define CFG_HT_MPDU_DENSITY_DEF CFG_HT_MPDU_DENSITY_2USEC
 
@@ -572,7 +572,8 @@ struct iwl_driver_hw_info {
 	u16 ac_queue_count;
 	u16 tx_cmd_len;
 	u16 max_rxq_size;
-	u32 rx_buffer_size;
+	u32 rx_buf_size;
+	u32 max_pkt_size;
 	u16 max_rxq_log;
 	u8  max_stations;
 	u8  bcast_sta_id;
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 0283172..8d47739 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -81,6 +81,7 @@ static int iwl_param_antenna;      /* def: 0 = both antennas (use diversity) */
 int iwl_param_hwcrypto;     /* def: using software encryption */
 static int iwl_param_qos_enable = 1;
 int iwl_param_queues_num = IWL_MAX_NUM_QUEUES;
+int iwl_param_amsdu_size_8K; /* def: enable 8K amsdu size */
 
 /*
  * module name, copyright, version, etc.
@@ -3164,7 +3165,7 @@ void iwl_handle_data_packet_monitor(struct iwl_priv *priv,
 	__le16 phy_flags_hw = cpu_to_le16(phy_flags);
 
 	/* We received data from the HW, so stop the watchdog */
-	if (len > IWL_RX_BUF_SIZE - sizeof(*iwl_rt)) {
+	if (len > priv->hw_setting.rx_buf_size - sizeof(*iwl_rt)) {
 		IWL_DEBUG_DROP("Dropping too large packet in monitor\n");
 		return;
 	}
@@ -4393,7 +4394,8 @@ void iwl_rx_replenish(void *data)
 		element = rxq->rx_used.next;
 		rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
 		rxb->skb =
-		    alloc_skb(IWL_RX_BUF_SIZE, __GFP_NOWARN | GFP_ATOMIC);
+		    alloc_skb(priv->hw_setting.rx_buf_size,
+				__GFP_NOWARN | GFP_ATOMIC);
 		if (!rxb->skb) {
 			if (net_ratelimit())
 				printk(KERN_CRIT DRV_NAME
@@ -4407,7 +4409,7 @@ void iwl_rx_replenish(void *data)
 		list_del(element);
 		rxb->dma_addr =
 		    pci_map_single(priv->pci_dev, rxb->skb->data,
-				   IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+			   priv->hw_setting.rx_buf_size, PCI_DMA_FROMDEVICE);
 		list_add_tail(&rxb->list, &rxq->rx_free);
 		rxq->free_count++;
 	}
@@ -4430,7 +4432,8 @@ static void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 		if (rxq->pool[i].skb != NULL) {
 			pci_unmap_single(priv->pci_dev,
 					 rxq->pool[i].dma_addr,
-					 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+					 priv->hw_setting.rx_buf_size,
+					 PCI_DMA_FROMDEVICE);
 			dev_kfree_skb(rxq->pool[i].skb);
 		}
 	}
@@ -4477,7 +4480,8 @@ void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
 		if (rxq->pool[i].skb != NULL) {
 			pci_unmap_single(priv->pci_dev,
 					 rxq->pool[i].dma_addr,
-					 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+					 priv->hw_setting.rx_buf_size,
+					 PCI_DMA_FROMDEVICE);
 			priv->alloc_rxb_skb--;
 			dev_kfree_skb(rxq->pool[i].skb);
 			rxq->pool[i].skb = NULL;
@@ -4604,7 +4608,7 @@ static void iwl_rx_handle(struct iwl_priv *priv)
 		rxq->queue[i] = NULL;
 
 		pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
-					    IWL_RX_BUF_SIZE,
+					    priv->hw_setting.rx_buf_size,
 					    PCI_DMA_FROMDEVICE);
 		pkt = (struct iwl_rx_packet *)rxb->skb->data;
 
@@ -4657,7 +4661,8 @@ static void iwl_rx_handle(struct iwl_priv *priv)
 		}
 
 		pci_unmap_single(priv->pci_dev, rxb->dma_addr,
-				 IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE);
+				 priv->hw_setting.rx_buf_size,
+				 PCI_DMA_FROMDEVICE);
 		spin_lock_irqsave(&rxq->lock, flags);
 		list_add_tail(&rxb->list, &priv->rxq.rx_used);
 		spin_unlock_irqrestore(&rxq->lock, flags);
@@ -9300,6 +9305,8 @@ MODULE_PARM_DESC(queues_num, "number of hw queues.");
 /* QoS */
 module_param_named(qos_enable, iwl_param_qos_enable, int, 0444);
 MODULE_PARM_DESC(qos_enable, "enable all QoS functionality");
+module_param_named(amsdu_size_8K, iwl_param_amsdu_size_8K, int, 0444);
+MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
 
 module_exit(iwl_exit);
 module_init(iwl_init);
-- 
1.5.3.3
---------------------------------------------------------------------
Intel Israel (74) Limited

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Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Johannes Berg]

[-- Attachment #1: Type: text/plain, Size: 648 bytes --]

Overall, looks pretty good. I personally prefer things like (!xyz)
rather than (xyz == NULL) but that's totally minor. I'll take a more
detailed look later and check out the frame flow etc.

>  - Changes to Rx handlers PAE and drop unencrypted (for EAPOL frames in amsdu)
>  - Examine config flows in mac80211 (RFC is prepered)

I'd prefer to have this patch series depend on these two items instead
because as it stands, we have a weird behaviour here and quite a lot of
duplicated code in the data/agg_data RX handlers. I thought your RFC was
pretty good except that you didn't want to convert existing stuff to it,
so...

johannes

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Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Guy Cohen]

Johannes,

We understand that these two issues need to be taken care of, and they
will be. My concern is that if current patches won't be merged soon,
we will have to pay the effort to rebase the patches again. We are
very limited with resources dedicated to supporting the merge of
802.11n to wireless-dev. This mailing list taught us in the "hard way"
in the recent months: submit often submit early... So for making Ron's
work efficient I suggest to merge his patches and let him do the fixes
on top of them, specially since the two fixes are not 802.11n core
critical issues and don't break any existing working flows. Do you
feel comfortable with this approach?

Guy.

On 11/14/07, Johannes Berg <johannes@sipsolutions.net> wrote:
> Overall, looks pretty good. I personally prefer things like (!xyz)
> rather than (xyz == NULL) but that's totally minor. I'll take a more
> detailed look later and check out the frame flow etc.
>
> >  - Changes to Rx handlers PAE and drop unencrypted (for EAPOL frames in amsdu)
> >  - Examine config flows in mac80211 (RFC is prepered)
>
> I'd prefer to have this patch series depend on these two items instead
> because as it stands, we have a weird behaviour here and quite a lot of
> duplicated code in the data/agg_data RX handlers. I thought your RFC was
> pretty good except that you didn't want to convert existing stuff to it,
> so...
>
> johannes
>
>

Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Johannes Berg]

[-- Attachment #1: Type: text/plain, Size: 1002 bytes --]

Guy,

> We understand that these two issues need to be taken care of, and they
> will be. My concern is that if current patches won't be merged soon,
> we will have to pay the effort to rebase the patches again. We are
> very limited with resources dedicated to supporting the merge of
> 802.11n to wireless-dev. This mailing list taught us in the "hard way"
> in the recent months: submit often submit early... So for making Ron's
> work efficient I suggest to merge his patches and let him do the fixes
> on top of them, specially since the two fixes are not 802.11n core
> critical issues and don't break any existing working flows. Do you
> feel comfortable with this approach?

I understand your concern, however, if for some reason this doesn't
happen quickly enough we'll end up with code that is vulnerable in weird
ways. I'd have no issue with these patches if deaggregation support was
optional until we have the patchset that reworks that code. Can we do
that?

johannes

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Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Ron Rindzonski]

> Guy,
>
> > We understand that these two issues need to be taken care of, and they
> > will be. My concern is that if current patches won't be merged soon,
> > we will have to pay the effort to rebase the patches again. We are
> > very limited with resources dedicated to supporting the merge of
> > 802.11n to wireless-dev. This mailing list taught us in the "hard way"
> > in the recent months: submit often submit early... So for making Ron's
> > work efficient I suggest to merge his patches and let him do the fixes
> > on top of them, specially since the two fixes are not 802.11n core
> > critical issues and don't break any existing working flows. Do you
> > feel comfortable with this approach?
>
> I understand your concern, however, if for some reason this doesn't
> happen quickly enough we'll end up with code that is vulnerable in weird
> ways. I'd have no issue with these patches if deaggregation support was
> optional until we have the patchset that reworks that code. Can we do
> that?

I would have to mention at this point that A-MSDU deaggregation is
obligatory according to the 802.11n, so excluding it would be a spec
violation.
What I will do is to put some out-of-band effort here, fixing the
rx_h_data infrastructure, so it will be able to support rx_h_amsdu as
well, thus eliminating the EAPOL bug.
I hope that this fix will be ready soon in order to enable the merge,
and then i will move on to next steps.
Ron

> johannes
>
>

Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Johannes Berg]

[-- Attachment #1: Type: text/plain, Size: 836 bytes --]


> I would have to mention at this point that A-MSDU deaggregation is
> obligatory according to the 802.11n, so excluding it would be a spec
> violation.

Right. But does that really matter for purposes of getting the code into
a development tree? What we're aiming for here is getting the code out
of your hands so that it won't conflict with other stuff that's work in
progress, rather than aiming for spec compliance (which is something I'd
aim for when merging this stuff up into Linus's tree)

> What I will do is to put some out-of-band effort here, fixing the
> rx_h_data infrastructure, so it will be able to support rx_h_amsdu as
> well, thus eliminating the EAPOL bug.
> I hope that this fix will be ready soon in order to enable the merge,
> and then i will move on to next steps.

Thanks much!

johannes

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Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Ron Rindzonski]

> > I would have to mention at this point that A-MSDU deaggregation is
> > obligatory according to the 802.11n, so excluding it would be a spec
> > violation.
>
> Right. But does that really matter for purposes of getting the code into
> a development tree? What we're aiming for here is getting the code out
> of your hands so that it won't conflict with other stuff that's work in
> progress, rather than aiming for spec compliance (which is something I'd
> aim for when merging this stuff up into Linus's tree)
>

Oh, sorry for misunderstanding you folks.
Yes, getting the code into the development tree will be excellent.
I am already working on the rx_h_data fix we talked about, and will sent it
over early next week to wrap things up.
Thanks
ron

> > What I will do is to put some out-of-band effort here, fixing the
> > rx_h_data infrastructure, so it will be able to support rx_h_amsdu as
> > well, thus eliminating the EAPOL bug.
>
> Thanks much!
>
> johannes
>
>

Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Johannes Berg]

[-- Attachment #1: Type: text/plain, Size: 512 bytes --]


> Yes, getting the code into the development tree will be excellent.
> I am already working on the rx_h_data fix we talked about, and will sent it
> over early next week to wrap things up.

Sounds good to me. I don't expect anything much to happen until then so
it probably doesn't matter if it's merged until then or not, but hey.
I'm certainly willing to rebase any patches I do, in fact I'm sort of
waiting for this before doing another attempt to do proper band rather
than mode stuff

johannes

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[PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Ron Rindjunsky]

This series of patches contains all 802.11n code + fixes of comments to
the first two cycles of 802.11n patches.

Fixed list:
===========
 - removing MAC80211_HT from config and all *.[ch] files
 - removing IWL4965 config dependency on MAC80211_HT
 - adding MAC80211_HT_DEBUG to config file and to relevant places
 - refine TODO remark in ieee80211_sta_process_addba_request
 - net_ratelimit() added to relevant prints
 - renaming ieee80211_rx_h_data_agg to ieee80211_rx_h_amsdu
 - removing parentheses from IEEE80211_CONF_SUPPORT_HT_MODE use
 - changing amsdu_frame type from u16 to u8
 - adding define SUPP_MCS_SET_LEN 16 to indicate MCS set length
 - fixes to some typos
 - Changes to Rx handlers PAE and drop unencrypted (for EAPOL frames in amsdu)

If this series is accepted then next series will contain the follow:

TODO list (planned for next series of patches)
==============================================
 - Full A-MPDU aggregation capability.
 - AP flows
 - Examine config flows in mac80211 (RFC is prepered)

Notes to this series:
======================
This series of patches splits into two parts:
 - patches 1-7 add 802.11n support to mac80211.
 - patches 8-15 demonstrates the use of the above mac80211's 802.11n framework through iwl4965 low level driver

In order to be compatible with the 802.11n requirements for an HT station,
patches 1-7 should not be treated as stand alone patches, but as a complete framework,
although separation to patches by subjects was made for ease of handling.
This applies to patches 8-15 as well.

The patches do _not_ break any existing driver.

patches were made (and tested to work) with wireless branch 2.6.24-rc3 (#everything)

The framework includes the following:
- HT probing.
- HT association.
- Support in Rx A-MSDU.
- Support in A-MPDU addBA request.
- HT information and configuration delivery to both low-level driver and rate scaling.
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Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Luis R. Rodriguez]

On Nov 26, 2007 9:14 AM, Ron Rindjunsky <ron.rindjunsky@intel.com> wrote:
> This series of patches contains all 802.11n code + fixes of comments to
> the first two cycles of 802.11n patches.
>
> Fixed list:
> ===========
>  - removing MAC80211_HT from config and all *.[ch] files
>  - removing IWL4965 config dependency on MAC80211_HT
>  - adding MAC80211_HT_DEBUG to config file and to relevant places
>  - refine TODO remark in ieee80211_sta_process_addba_request
>  - net_ratelimit() added to relevant prints
>  - renaming ieee80211_rx_h_data_agg to ieee80211_rx_h_amsdu
>  - removing parentheses from IEEE80211_CONF_SUPPORT_HT_MODE use
>  - changing amsdu_frame type from u16 to u8
>  - adding define SUPP_MCS_SET_LEN 16 to indicate MCS set length
>  - fixes to some typos
>  - Changes to Rx handlers PAE and drop unencrypted (for EAPOL frames in amsdu)
>
> If this series is accepted then next series will contain the follow:
>
> TODO list (planned for next series of patches)
> ==============================================
>  - Full A-MPDU aggregation capability.
>  - AP flows
>  - Examine config flows in mac80211 (RFC is prepered)
>
> Notes to this series:
> ======================
> This series of patches splits into two parts:
>  - patches 1-7 add 802.11n support to mac80211.
>  - patches 8-15 demonstrates the use of the above mac80211's 802.11n framework through iwl4965 low level driver
>
> In order to be compatible with the 802.11n requirements for an HT station,
> patches 1-7 should not be treated as stand alone patches, but as a complete framework,
> although separation to patches by subjects was made for ease of handling.
> This applies to patches 8-15 as well.
>
> The patches do _not_ break any existing driver.
>
> patches were made (and tested to work) with wireless branch 2.6.24-rc3 (#everything)
>
> The framework includes the following:
> - HT probing.
> - HT association.
> - Support in Rx A-MSDU.
> - Support in A-MPDU addBA request.
> - HT information and configuration delivery to both low-level driver and rate scaling.

Ron I haven't been able to review your 802.11n patches yet due to time
but I do remember seeing some "channel" variable in a struct somewhere
at a quick glance on your 802.11n patch series. It was determined a
little while ago that we'd move from static channels to frequency
instead. One reason for this is to stick to 'one' thing later for
regulatory purposes. Another reason that came up later is that
frequency be relied upon even on 5GHz reliably contrary to channel
number -- in 5GHz the channel numbers can be mapped arbitrarily
depending on the regulatory agency your country falls under. Would it
be too much if you used frequency instead of channel or does the the
802.11n draft specs say you have to use channel somewhere?

Sorry I couldn't pin point the specific patch yet.

  Luis

Re: [PATCH 0/15] mac80211/iwlwifi (#everything): integrate IEEE802.11n support

[Ron Rindjunsky]

> Ron I haven't been able to review your 802.11n patches yet due to time
> but I do remember seeing some "channel" variable in a struct somewhere
> at a quick glance on your 802.11n patch series. It was determined a
> little while ago that we'd move from static channels to frequency
> instead. One reason for this is to stick to 'one' thing later for
> regulatory purposes. Another reason that came up later is that
> frequency be relied upon even on 5GHz reliably contrary to channel
> number -- in 5GHz the channel numbers can be mapped arbitrarily
> depending on the regulatory agency your country falls under. Would it
> be too much if you used frequency instead of channel or does the the
> 802.11n draft specs say you have to use channel somewhere?
>
> Sorry I couldn't pin point the specific patch yet.

it will be helpful to know the specific place where you spotted it,
but i will assume you are relating to the channel width and offset?.
in that case i took the 802.11n spec name from 2 reasons:
1 - to be clearer to code readers as to right place in the spec
2 - the spec strongly relates to 20/40 Mhz capabilities of the
channel, not to the channel itself, (e.g. extention channel), so i saw
no reason to break it and to go to frequencies.

ron

>
>  Luis