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iwlwifi: mvm: CSA unbind-bind flow support for client

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Implement support for unbind-bind flow for the client roles.  This
includes telling the firmware that we are not associated, removing
time-events, removing quotas and updating power management during the
actual switch, and redoing everything in the new channel.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Luciano Coelho 2014-03-05 15:41:48 +02:00 committed by Emmanuel Grumbach
parent b08c1d972a
commit f0c9778396
1 changed files with 25 additions and 10 deletions
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35
drivers/net/wireless/iwlwifi/mvm/mac80211.c
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@ -293,6 +293,7 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
IEEE80211_HW_AMPDU_AGGREGATION |
IEEE80211_HW_TIMING_BEACON_ONLY |
IEEE80211_HW_CONNECTION_MONITOR |
IEEE80211_HW_CHANCTX_STA_CSA |
IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
IEEE80211_HW_SUPPORTS_STATIC_SMPS;
@ -2374,7 +2375,8 @@ static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
struct ieee80211_chanctx_conf *ctx,
bool switching_chanctx)
{
u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
@ -2429,7 +2431,8 @@ static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
}
/* Handle binding during CSA */
if (vif->type == NL80211_IFTYPE_AP) {
if ((vif->type == NL80211_IFTYPE_AP) ||
(switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
iwl_mvm_update_quotas(mvm, NULL);
iwl_mvm_mac_ctxt_changed(mvm, vif, false);
}
@ -2452,7 +2455,7 @@ static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
int ret;
mutex_lock(&mvm->mutex);
ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx);
ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
mutex_unlock(&mvm->mutex);
return ret;
@ -2460,9 +2463,11 @@ static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx)
struct ieee80211_chanctx_conf *ctx,
bool switching_chanctx)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct ieee80211_vif *disabled_vif = NULL;
lockdep_assert_held(&mvm->mutex);
@ -2473,7 +2478,6 @@ static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
goto out;
case NL80211_IFTYPE_MONITOR:
mvmvif->monitor_active = false;
iwl_mvm_update_quotas(mvm, NULL);
break;
case NL80211_IFTYPE_AP:
/* This part is triggered only during CSA */
@ -2481,11 +2485,20 @@ static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
goto out;
mvmvif->ap_ibss_active = false;
iwl_mvm_update_quotas(mvm, NULL);
break;
case NL80211_IFTYPE_STATION:
if (!switching_chanctx)
break;
disabled_vif = vif;
iwl_mvm_mac_ctxt_changed(mvm, vif, true);
break;
default:
break;
}
iwl_mvm_update_quotas(mvm, disabled_vif);
iwl_mvm_binding_remove_vif(mvm, vif);
out:
@ -2500,7 +2513,7 @@ static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
__iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx);
__iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
mutex_unlock(&mvm->mutex);
}
@ -2517,7 +2530,7 @@ static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
return -EOPNOTSUPP;
mutex_lock(&mvm->mutex);
__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx);
__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
__iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
@ -2526,7 +2539,8 @@ static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
goto out_reassign;
}
ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx);
ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
true);
if (ret) {
IWL_ERR(mvm,
"failed to assign new_ctx during channel switch\n");
@ -2545,7 +2559,8 @@ out_reassign:
goto out_restart;
}
ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx);
ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
true);
if (ret) {
IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
goto out_restart;