wifi: iwlwifi: mvm: add support for the new LINK command

As a part of the new MLD FW API changes, we have a new LINK command
to add/remove/configure a link.
Add structures and enum definitions, along with the functions that
sends this command (i.e. add, remove and change mac ctxt).
These functions will be in used in the next patches.

Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230314194113.d7808329effb.I13bea2db206b78540bc866bc3ab755ad5be78c53@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 179 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h b/drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h
index f12b2a25cd3d..301f34f13523 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/mac-cfg.h
@@ -38,6 +38,10 @@ enum iwl_mac_conf_subcmd_ids {
 	 */
 	MAC_CONFIG_CMD = 0x8,
 	/**
+	 * @LINK_CONFIG_CMD: &struct iwl_link_config_cmd
+	 */
+	LINK_CONFIG_CMD = 0x9,
+	/**
 	 * @SESSION_PROTECTION_NOTIF: &struct iwl_mvm_session_prot_notif
 	 */
 	SESSION_PROTECTION_NOTIF = 0xFB,
@@ -287,4 +291,179 @@ struct iwl_mac_config_cmd {
 	};
 } __packed; /* MAC_CONTEXT_CONFIG_CMD_API_S_VER_1 */
 
+/**
+ * enum iwl_link_ctx_modify_flags - indicate to the fw what fields are being
+ *	modified in &iwl_link_ctx_cfg_cmd
+ *
+ * @LINK_CONTEXT_MODIFY_ACTIVE: covers iwl_link_ctx_cfg_cmd::active
+ * @LINK_CONTEXT_MODIFY_RATES_INFO: covers iwl_link_ctx_cfg_cmd::cck_rates,
+ *	iwl_link_ctx_cfg_cmd::ofdm_rates,
+ *	iwl_link_ctx_cfg_cmd::cck_short_preamble,
+ *	iwl_link_ctx_cfg_cmd::short_slot
+ * @LINK_CONTEXT_MODIFY_PROTECT_FLAGS: covers
+ *	iwl_link_ctx_cfg_cmd::protection_flags
+ * @LINK_CONTEXT_MODIFY_QOS_PARAMS: covers iwl_link_ctx_cfg_cmd::qos_flags,
+ *	iwl_link_ctx_cfg_cmd::ac,
+ * @LINK_CONTEXT_MODIFY_BEACON_TIMING: covers iwl_link_ctx_cfg_cmd::bi,
+ *	iwl_link_ctx_cfg_cmd::dtim_interval,
+ *	iwl_link_ctx_cfg_cmd::dtim_time,
+ *	iwl_link_ctx_cfg_cmd::dtim_tsf,
+ *	iwl_link_ctx_cfg_cmd::assoc_beacon_arrive_time.
+ *	This flag can be set only once after assoc.
+ * @LINK_CONTEXT_MODIFY_HE_PARAMS: covers
+ *	iwl_link_ctx_cfg_cmd::htc_trig_based_pkt_ext
+ *	iwl_link_ctx_cfg_cmd::rand_alloc_ecwmin,
+ *	iwl_link_ctx_cfg_cmd::rand_alloc_ecwmax,
+ *	iwl_link_ctx_cfg_cmd::trig_based_txf,
+ *	iwl_link_ctx_cfg_cmd::bss_color,
+ *	iwl_link_ctx_cfg_cmd::ndp_fdbk_buff_th_exp,
+ *	iwl_link_ctx_cfg_cmd::ref_bssid_addr
+ *	iwl_link_ctx_cfg_cmd::bssid_index,
+ *	iwl_link_ctx_cfg_cmd::frame_time_rts_th.
+ *	This flag can be set any time.
+ * @LINK_CONTEXT_MODIFY_BSS_COLOR_DISABLE: covers
+ *	iwl_link_ctx_cfg_cmd::bss_color_disable
+ * @LINK_CONTEXT_MODIFY_EHT_PARAMS: covers iwl_link_ctx_cfg_cmd::puncture_mask.
+ *	This flag can be set only if the MAC that this link relates to has
+ *	eht_support set to true.
+ * @LINK_CONTEXT_MODIFY_ALL: set all above flags
+ */
+enum iwl_link_ctx_modify_flags {
+	LINK_CONTEXT_MODIFY_ACTIVE		= BIT(0),
+	LINK_CONTEXT_MODIFY_RATES_INFO		= BIT(1),
+	LINK_CONTEXT_MODIFY_PROTECT_FLAGS	= BIT(2),
+	LINK_CONTEXT_MODIFY_QOS_PARAMS		= BIT(3),
+	LINK_CONTEXT_MODIFY_BEACON_TIMING	= BIT(4),
+	LINK_CONTEXT_MODIFY_HE_PARAMS		= BIT(5),
+	LINK_CONTEXT_MODIFY_BSS_COLOR_DISABLE	= BIT(6),
+	LINK_CONTEXT_MODIFY_EHT_PARAMS		= BIT(7),
+	LINK_CONTEXT_MODIFY_ALL			= 0xff,
+}; /* LINK_CONTEXT_MODIFY_MASK_E_VER_1 */
+
+/**
+ * enum iwl_link_ctx_protection_flags - link protection flags
+ * @LINK_PROT_FLG_TGG_PROTECT: 11g protection when transmitting OFDM frames,
+ *	this will require CCK RTS/CTS2self.
+ *	RTS/CTS will protect full burst time.
+ * @LINK_PROT_FLG_HT_PROT: enable HT protection
+ * @LINK_PROT_FLG_FAT_PROT: protect 40 MHz transmissions
+ * @LINK_PROT_FLG_SELF_CTS_EN: allow CTS2self
+ */
+enum iwl_link_ctx_protection_flags {
+	LINK_PROT_FLG_TGG_PROTECT	= BIT(0),
+	LINK_PROT_FLG_HT_PROT		= BIT(1),
+	LINK_PROT_FLG_FAT_PROT		= BIT(2),
+	LINK_PROT_FLG_SELF_CTS_EN	= BIT(3),
+}; /* LINK_PROTECT_FLAGS_E_VER_1 */
+
+/**
+ * enum iwl_link_ctx_flags - link context flags
+ *
+ * @LINK_FLG_BSS_COLOR_DIS: BSS color disable, don't use the BSS
+ *	color for RX filter but use MAC header
+ *	enabled AGG, i.e. both BACK and non-BACK frames in a single AGG
+ * @LINK_FLG_MU_EDCA_CW: indicates that there is an element of MU EDCA
+ *	parameter set, i.e. the backoff counters for trig-based ACs
+ * @LINK_FLG_RU_2MHZ_BLOCK: indicates that 26-tone RU OFDMA transmission are
+ *      not allowed (as there are OBSS that might classify such transmissions as
+ *      radar pulses).
+ */
+enum iwl_link_ctx_flags {
+	LINK_FLG_BSS_COLOR_DIS		= BIT(0),
+	LINK_FLG_MU_EDCA_CW		= BIT(1),
+	LINK_FLG_RU_2MHZ_BLOCK		= BIT(2),
+}; /* LINK_CONTEXT_FLAG_E_VER_1 */
+
+/**
+ * struct iwl_link_config_cmd - command structure to configure the LINK context
+ *	in MLD API
+ * ( LINK_CONFIG_CMD =0x9 )
+ *
+ * @action: action to perform, one of FW_CTXT_ACTION_*
+ * @link_id: the id of the link that this cmd configures
+ * @mac_id: interface ID. Relevant only if action is FW_CTXT_ACTION_ADD
+ * @phy_id: PHY index. Can be changed only if the link was inactive
+ *	(and stays inactive). If the link is active (or becomes active),
+ *	this field is ignored.
+ * @local_link_addr: the links MAC address. Can be changed only if the link was
+ *	inactive (and stays inactive). If the link is active
+ *	(or becomes active), this field is ignored.
+ * @reserved_for_local_link_addr: reserved
+ * @modify_mask: from &enum iwl_link_ctx_modify_flags, selects what to change.
+ *	Relevant only if action is FW_CTXT_ACTION_MODIFY
+ * @active: indicates whether the link is active or not
+ * @listen_lmac: indicates whether the link should be allocated on the Listen
+ *	Lmac or on the Main Lmac. Cannot be changed on an active Link.
+ *	Relevant only for eSR.
+ * @cck_rates: basic rates available for CCK
+ * @ofdm_rates: basic rates available for OFDM
+ * @cck_short_preamble: 1 for enabling short preamble, 0 otherwise
+ * @short_slot: 1 for enabling short slots, 0 otherwise
+ * @protection_flags: combination of &enum iwl_link_ctx_protection_flags
+ * @qos_flags: from &enum iwl_mac_qos_flags
+ * @ac: one iwl_mac_qos configuration for each AC
+ * @htc_trig_based_pkt_ext: default PE in 4us units
+ * @rand_alloc_ecwmin: random CWmin = 2**ECWmin-1
+ * @rand_alloc_ecwmax: random CWmax = 2**ECWmax-1
+ * @ndp_fdbk_buff_th_exp: set exponent for the NDP feedback buffered threshold
+ * @trig_based_txf: MU EDCA Parameter set for the trigger based traffic queues
+ * @dtim_time: DTIM arrival time in system time
+ * @dtim_tsf: DTIM arrival time in TSF
+ * @assoc_beacon_arrive_time: TSF of first beacon after association
+ * @bi: beacon interval in TU, applicable only when associated
+ * @dtim_interval: DTIM interval in TU.
+ *	Relevant only for GO, otherwise this is offloaded.
+ * @beacon_template: beacon template ID. For GO only
+ * @puncture_mask: puncture mask for EHT
+ * @frame_time_rts_th: HE duration RTS threshold, in units of 32us
+ * @flags: a combination from &enum iwl_link_ctx_flags
+ * @flags_mask: what of %flags have changed. Also &enum iwl_link_ctx_flags
+ * Below fields are for multi-bssid:
+ * @ref_bssid_addr: reference BSSID used by the AP
+ * @reserved_for_ref_bssid_addr: reserved
+ * @bssid_index: index of the associated VAP
+ * @bss_color: 11ax AP ID that is used in the HE SIG-A to mark inter BSS frame
+ * @reserved: alignment
+ */
+struct iwl_link_config_cmd {
+	__le32 action;
+	__le32 link_id;
+	__le32 mac_id;
+	__le32 phy_id;
+	u8 local_link_addr[6];
+	__le16 reserved_for_local_link_addr;
+	__le32 modify_mask;
+	__le32 active;
+	__le32 listen_lmac;
+	__le32 cck_rates;
+	__le32 ofdm_rates;
+	__le32 cck_short_preamble;
+	__le32 short_slot;
+	__le32 protection_flags;
+	/* MAC_QOS_PARAM_API_S_VER_1 */
+	__le32 qos_flags;
+	struct iwl_ac_qos ac[AC_NUM + 1];
+	u8 htc_trig_based_pkt_ext;
+	u8 rand_alloc_ecwmin;
+	u8 rand_alloc_ecwmax;
+	u8 ndp_fdbk_buff_th_exp;
+	struct iwl_he_backoff_conf trig_based_txf[AC_NUM];
+	__le32 dtim_time;
+	__le64 dtim_tsf;
+	__le32 assoc_beacon_arrive_time;
+	__le32 bi;
+	__le32 dtim_interval;
+	__le32 beacon_template;
+	__le16 puncture_mask;
+	__le16 frame_time_rts_th;
+	__le32 flags;
+	__le32 flags_mask;
+	/* The below fields are for multi-bssid */
+	u8 ref_bssid_addr[6];
+	__le16 reserved_for_ref_bssid_addr;
+	u8 bssid_index;
+	u8 bss_color;
+	u8 reserved[2];
+} __packed; /* LINK_CONTEXT_CONFIG_CMD_API_S_VER_1 */
+
 #endif /* __iwl_fw_api_mac_cfg_h__ */