wifi: iwlwifi: add iwlmld sub-driver

iwlwifi is the driver of all Intel wifi devices since 2008.
Since then, the hardware has changed a lot, but the firmware
API has changed even more. The need to keep one driver that
supports all those different APIs led us to introduce a new
architecture circa 2012 which allowed us to keep the same
interface to the hardware (DMAs, Tx queues, etc...) with a
new layer to implement the mid-layer between mac80211 and
the firmware. The first component is called the 'transport'
and the latter is called 'operation_mode' a.k.a  op_mode.

In 2013 we took advantage of the new architecture to
introduce iwlmvm which allowed us to implement the, then,
new firmware API. This op_mode supports 7260 and up, those
devices supports support at least VHT.

Since then, wifi evolved and so did the firmware. It became
much bigger and took a lot of functionality from the driver.
It became increasingly hard to keep the same op_mode for the
newest devices and we experienced frequent regressions on
older devices. In order to avoid those regressions and keep
the code maintainable, we decided it was about time to start
a new op_mode.

iwlmld is a new op_mode that supports BE200 or newer if the
firmware being used is 97.ucode or newer. If the user has
an older devices or BE200 with .96.ucode, iwlmvm will be
loaded. Of course, this op_mode selection is seamless.

All the features supported in iwlmvm are supported in
iwlmld besides a few seldom used use cases: injection and
Hotspot 2.0. Those are under work.

A few points about the implementation:
 * iwlmld doesn't have any mutexes, it relies on the
   wiphy_lock
 * iwlmld is more "resource oriented": stations, links and
   interfaces are allocated and freed only after all the
   relevant flows are completed.
 * Firmware notifications' sizes are validated in a more
   structured way.

We would love to see this new op_mode merged in 6.15. The
firmware for this new driver (.97.ucode) is not yet publicly
available but it'll be sent very soon.
People eager to get an early version of this firmware can
contact Emmanuel at:
emmanuel.grumbach@intel.com

I've listed the people who directly contributed
code, but many others from various teams have
contributed in other ways.

Co-developed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Co-developed-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Co-developed-by: Daniel Gabay <daniel.gabay@intel.com>
Signed-off-by: Daniel Gabay <daniel.gabay@intel.com>
Co-developed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Co-developed-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Co-developed-by: Yedidya Benshimol <yedidya.ben.shimol@intel.com>
Signed-off-by: Yedidya Benshimol <yedidya.ben.shimol@intel.com>
Co-developed-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Co-developed-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://lore.kernel.org/linux-wireless/20250216094321.537988-1-miriam.rachel.korenblit@intel.com/
[fix Kconfig, fix api/phy.h includes, SPDX tag and coding
 style issues, duplicated includes per 0-day robot]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 88 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mld/constants.h b/drivers/net/wireless/intel/iwlwifi/mld/constants.h
new file mode 100644
index 000000000000..9a24996014b8
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mld/constants.h
@@ -0,0 +1,88 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * Copyright (C) 2024-2025 Intel Corporation
+ */
+#ifndef __iwl_mld_constants_h__
+#define __iwl_mld_constants_h__
+
+#define IWL_MLD_MISSED_BEACONS_SINCE_RX_THOLD			4
+#define IWL_MLD_MISSED_BEACONS_THRESHOLD			8
+#define IWL_MLD_MISSED_BEACONS_THRESHOLD_LONG			19
+#define IWL_MLD_BCN_LOSS_EXIT_ESR_THRESH_2_LINKS		5
+#define IWL_MLD_BCN_LOSS_EXIT_ESR_THRESH			15
+#define IWL_MLD_BCN_LOSS_EXIT_ESR_THRESH_BSS_PARAM_CHANGED	11
+#define IWL_MLD_LOW_RSSI_MLO_SCAN_THRESH			-72
+
+#define IWL_MLD_DEFAULT_PS_TX_DATA_TIMEOUT	(100 * USEC_PER_MSEC)
+#define IWL_MLD_DEFAULT_PS_RX_DATA_TIMEOUT	(100 * USEC_PER_MSEC)
+#define IWL_MLD_WOWLAN_PS_TX_DATA_TIMEOUT	(10 * USEC_PER_MSEC)
+#define IWL_MLD_WOWLAN_PS_RX_DATA_TIMEOUT	(10 * USEC_PER_MSEC)
+#define IWL_MLD_SHORT_PS_TX_DATA_TIMEOUT	(2 * 1024) /* defined in TU */
+#define IWL_MLD_SHORT_PS_RX_DATA_TIMEOUT	(40 * 1024) /* defined in TU */
+
+#define IWL_MLD_UAPSD_RX_DATA_TIMEOUT		(50 * USEC_PER_MSEC)
+#define IWL_MLD_UAPSD_TX_DATA_TIMEOUT		(50 * USEC_PER_MSEC)
+
+#define IWL_MLD_PS_SNOOZE_INTERVAL		25
+#define IWL_MLD_PS_SNOOZE_INTERVAL		25
+#define IWL_MLD_PS_SNOOZE_WINDOW		50
+
+#define IWL_MLD_PS_SNOOZE_HEAVY_TX_THLD_PACKETS	30
+#define IWL_MLD_PS_SNOOZE_HEAVY_RX_THLD_PACKETS	20
+
+#define IWL_MLD_PS_HEAVY_TX_THLD_PERCENT	50
+#define IWL_MLD_PS_HEAVY_RX_THLD_PERCENT	50
+#define IWL_MLD_PS_HEAVY_TX_THLD_PACKETS	20
+#define IWL_MLD_PS_HEAVY_RX_THLD_PACKETS	8
+
+#define IWL_MLD_TRIGGER_LINK_SEL_TIME_SEC	30
+#define IWL_MLD_SCAN_EXPIRE_TIME_SEC		20
+
+#define IWL_MLD_TPT_COUNT_WINDOW (5 * HZ)
+
+/* OMI reduced BW thresholds (channel load percentage) */
+#define IWL_MLD_OMI_ENTER_CHAN_LOAD		10
+#define IWL_MLD_OMI_EXIT_CHAN_LOAD_160		20
+#define IWL_MLD_OMI_EXIT_CHAN_LOAD_320		30
+/* time (in milliseconds) to let AP "settle" the OMI */
+#define IWL_MLD_OMI_AP_SETTLE_DELAY		27
+/* time (in milliseconds) to not enter OMI reduced BW after leaving */
+#define IWL_MLD_OMI_EXIT_PROTECTION		5000
+
+#define IWL_MLD_DIS_RANDOM_FW_ID                false
+#define IWL_MLD_D3_DEBUG                        false
+#define IWL_MLD_NON_TRANSMITTING_AP	        false
+#define IWL_MLD_6GHZ_PASSIVE_SCAN_TIMEOUT       3000 /* in seconds */
+#define IWL_MLD_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT 60   /* in seconds */
+#define IWL_MLD_CONN_LISTEN_INTERVAL		10
+#define IWL_MLD_ADAPTIVE_DWELL_NUM_APS_OVERRIDE 0
+#define IWL_MLD_AUTO_EML_ENABLE			true
+
+#define IWL_MLD_HIGH_RSSI_THRESH_20MHZ		-67
+#define IWL_MLD_LOW_RSSI_THRESH_20MHZ		-72
+#define IWL_MLD_HIGH_RSSI_THRESH_40MHZ		-64
+#define IWL_MLD_LOW_RSSI_THRESH_40MHZ		-72
+#define IWL_MLD_HIGH_RSSI_THRESH_80MHZ		-61
+#define IWL_MLD_LOW_RSSI_THRESH_80MHZ		-72
+#define IWL_MLD_HIGH_RSSI_THRESH_160MHZ		-58
+#define IWL_MLD_LOW_RSSI_THRESH_160MHZ		-72
+
+#define IWL_MLD_ENTER_EMLSR_TPT_THRESH		400
+#define IWL_MLD_CHAN_LOAD_THRESH		2 /* in percentage */
+
+#define IWL_MLD_FTM_INITIATOR_ALGO		IWL_TOF_ALGO_TYPE_MAX_LIKE
+#define IWL_MLD_FTM_INITIATOR_DYNACK		true
+#define IWL_MLD_FTM_LMR_FEEDBACK_TERMINATE	false
+#define IWL_MLD_FTM_TEST_INCORRECT_SAC		false
+#define IWL_MLD_FTM_R2I_MAX_REP			7
+#define IWL_MLD_FTM_I2R_MAX_REP			7
+#define IWL_MLD_FTM_R2I_MAX_STS			1
+#define IWL_MLD_FTM_I2R_MAX_STS			1
+#define IWL_MLD_FTM_R2I_MAX_TOTAL_LTF		3
+#define IWL_MLD_FTM_I2R_MAX_TOTAL_LTF		3
+#define IWL_MLD_FTM_RESP_NDP_SUPPORT		true
+#define IWL_MLD_FTM_RESP_LMR_FEEDBACK_SUPPORT	true
+#define IWL_MLD_FTM_NON_TB_MIN_TIME_BETWEEN_MSR	7
+#define IWL_MLD_FTM_NON_TB_MAX_TIME_BETWEEN_MSR	1000
+
+#endif /* __iwl_mld_constants_h__ */