iwlwifi: mvm: Loosen the channel context/phy context coupling
In current implementation, the phy context is tightly coupled
with the channel context. This complicates the possibility of
using the same phy context for both netdev interfaces and the P2P
Device interface. To loosen this coupling:
1. Manage all the phy contexts in the mvm op mode, and only save
the phy context id in the chanctx memory.
2. Reference count the phy contexts and free them only when they
are not longer used (both by mac80211 and P2P Device).
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
index 4fc64d5..3505fca 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -109,6 +109,7 @@
struct iwl_mvm_phy_ctxt {
u16 id;
u16 color;
+ u32 ref;
/*
* TODO: This should probably be removed. Currently here only for rate
@@ -318,7 +319,7 @@
bool prevent_power_down_d3;
#endif
- struct iwl_mvm_phy_ctxt phy_ctxt_roc;
+ struct iwl_mvm_phy_ctxt phy_ctxts[NUM_PHY_CTX];
struct list_head time_event_list;
spinlock_t time_event_lock;
@@ -448,8 +449,10 @@
int iwl_mvm_phy_ctxt_changed(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
struct cfg80211_chan_def *chandef,
u8 chains_static, u8 chains_dynamic);
-void iwl_mvm_phy_ctxt_remove(struct iwl_mvm *mvm,
- struct iwl_mvm_phy_ctxt *ctxt);
+void iwl_mvm_phy_ctxt_ref(struct iwl_mvm *mvm,
+ struct iwl_mvm_phy_ctxt *ctxt);
+void iwl_mvm_phy_ctxt_unref(struct iwl_mvm *mvm,
+ struct iwl_mvm_phy_ctxt *ctxt);
/* MAC (virtual interface) programming */
int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif);