From 48a256e8aed05df3a90a0e9cdfcc558d139ec7f5 Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Mon, 10 Nov 2014 11:10:09 +0200 Subject: [PATCH] iwlwifi: mvm: add support for CHANCTX_SWMODE_REASSIGN_VIF Add support to reassign vif in switch_vif_chanctx. This is similar to the existing CHANCTX_SWMODE_SWAP_CONTEXTS mode, but doesn't delete the old context nor creates a new one, doing to switch between two existing contexts. Signed-off-by: Luciano Coelho --- drivers/net/wireless/iwlwifi/mvm/mac80211.c | 40 ++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c index 1966a6096033..542e59f61d1c 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c @@ -3013,6 +3013,44 @@ out: return ret; } +static int +iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, + struct ieee80211_vif_chanctx_switch *vifs) +{ + int ret; + + mutex_lock(&mvm->mutex); + __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); + + 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"); + goto out_reassign; + } + + goto out; + +out_reassign: + if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, + true)) { + IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); + goto out_restart; + } + + goto out; + +out_restart: + /* things keep failing, better restart the hw */ + iwl_mvm_nic_restart(mvm, false); + +out: + mutex_unlock(&mvm->mutex); + + return ret; +} + static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif_chanctx_switch *vifs, int n_vifs, @@ -3030,7 +3068,7 @@ static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); break; case CHANCTX_SWMODE_REASSIGN_VIF: - ret = -EOPNOTSUPP; + ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); break; default: ret = -EOPNOTSUPP; -- 2.20.1