wifi: iwlwifi: mvm: vif preparation for MLO

In MLO, some fields of iwl_mvm_vif should be defined in the
context of a link. Define a separate structure for these fields and
add a deflink object to hold it as part of iwl_mvm_vif. Non-MLO legacy
code will use only deflink object while MLO related code will use the
corresponding link from the link array.

It follows the strategy applied in mac80211 for introducing MLO
changes.

The below spatch takes care of updating all driver code to access
fields separated into MLD specific data structure via deflink (need
to convert all references to the fields listed in var to deflink.var
and also to take care of calls like iwl_mvm_vif_from_mac80211(vif)->field).

  @iwl_mld_vif@
  struct iwl_mvm_vif *v;
  struct ieee80211_vif *vv;
  identifier fn;
  identifier var = {bssid, ap_sta_id, bcast_sta, mcast_sta,
                    beacon_stats, smps_requests, probe_resp_data,
		    he_ru_2mhz_block, cab_queue, phy_ctxt,
                    queue_params};
  @@

  (
    v->
  -    var
  +    deflink.var
  |
    fn(vv)->
  -    var
  +    deflink.var
  )

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230328104948.4896576f0a9f.Ifaf0187c96b9fe52b24bd629331165831a877691@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 8 insertions, 5 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/binding.c b/drivers/net/wireless/intel/iwlwifi/mvm/binding.c
index 0aac306304cb..ef50ccabcc73 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/binding.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/binding.c
@@ -2,6 +2,7 @@
 /*
  * Copyright (C) 2012-2014, 2020 Intel Corporation
  * Copyright (C) 2016 Intel Deutschland GmbH
+ * Copyright (C) 2022 Intel Corporation
  */
 #include <net/mac80211.h>
 #include "fw-api.h"
@@ -75,7 +76,7 @@ static void iwl_mvm_iface_iterator(void *_data, u8 *mac,
 	if (vif == data->ignore_vif)
 		return;
 
-	if (mvmvif->phy_ctxt != data->phyctxt)
+	if (mvmvif->deflink.phy_ctxt != data->phyctxt)
 		return;
 
 	if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING))
@@ -132,7 +133,7 @@ int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 {
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 
-	if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
+	if (WARN_ON_ONCE(!mvmvif->deflink.phy_ctxt))
 		return -EINVAL;
 
 	/*
@@ -142,7 +143,8 @@ int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 	if (iwl_mvm_sf_update(mvm, vif, false))
 		return -EINVAL;
 
-	return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, true);
+	return iwl_mvm_binding_update(mvm, vif, mvmvif->deflink.phy_ctxt,
+				      true);
 }
 
 int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
@@ -150,10 +152,11 @@ int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 	int ret;
 
-	if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
+	if (WARN_ON_ONCE(!mvmvif->deflink.phy_ctxt))
 		return -EINVAL;
 
-	ret = iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, false);
+	ret = iwl_mvm_binding_update(mvm, vif, mvmvif->deflink.phy_ctxt,
+				     false);
 
 	if (!ret)
 		if (iwl_mvm_sf_update(mvm, vif, true))