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|
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2022 Intel Corporation
*/
#include "mvm.h"
static int iwl_mvm_mld_mac_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
mutex_lock(&mvm->mutex);
/* Common for MLD and non-MLD API */
if (iwl_mvm_mac_add_interface_common(mvm, hw, vif, &ret))
goto out_unlock;
ret = iwl_mvm_mld_mac_ctxt_add(mvm, vif);
if (ret)
goto out_unlock;
ret = iwl_mvm_power_update_mac(mvm);
if (ret)
goto out_remove_mac;
/* beacon filtering */
ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
if (ret)
goto out_remove_mac;
if (!mvm->bf_allowed_vif &&
vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
mvm->bf_allowed_vif = mvmvif;
vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
IEEE80211_VIF_SUPPORTS_CQM_RSSI;
}
/*
* P2P_DEVICE interface does not have a channel context assigned to it,
* so a dedicated PHY context is allocated to it and the corresponding
* MAC context is bound to it at this stage.
*/
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
mvmvif->deflink.phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
if (!mvmvif->deflink.phy_ctxt) {
ret = -ENOSPC;
goto out_free_bf;
}
iwl_mvm_phy_ctxt_ref(mvm, mvmvif->deflink.phy_ctxt);
ret = iwl_mvm_add_link(mvm, vif);
if (ret)
goto out_unref_phy;
ret = iwl_mvm_link_changed(mvm, vif,
LINK_CONTEXT_MODIFY_ACTIVE |
LINK_CONTEXT_MODIFY_RATES_INFO,
true);
if (ret)
goto out_remove_link;
ret = iwl_mvm_mld_add_bcast_sta(mvm, vif);
if (ret)
goto out_remove_link;
/* Save a pointer to p2p device vif, so it can later be used to
* update the p2p device MAC when a GO is started/stopped
*/
mvm->p2p_device_vif = vif;
}
iwl_mvm_tcm_add_vif(mvm, vif);
INIT_DELAYED_WORK(&mvmvif->csa_work,
iwl_mvm_channel_switch_disconnect_wk);
if (vif->type == NL80211_IFTYPE_MONITOR) {
mvm->monitor_on = true;
ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
}
iwl_mvm_vif_dbgfs_register(mvm, vif);
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
!mvm->csme_vif && mvm->mei_registered) {
iwl_mei_set_nic_info(vif->addr, mvm->nvm_data->hw_addr);
iwl_mei_set_netdev(ieee80211_vif_to_wdev(vif)->netdev);
mvm->csme_vif = vif;
}
goto out_unlock;
out_remove_link:
/* Link needs to be deactivated before removal */
iwl_mvm_link_changed(mvm, vif, LINK_CONTEXT_MODIFY_ACTIVE, false);
iwl_mvm_remove_link(mvm, vif);
out_unref_phy:
iwl_mvm_phy_ctxt_unref(mvm, mvmvif->deflink.phy_ctxt);
out_free_bf:
if (mvm->bf_allowed_vif == mvmvif) {
mvm->bf_allowed_vif = NULL;
vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
IEEE80211_VIF_SUPPORTS_CQM_RSSI);
}
out_remove_mac:
mvmvif->deflink.phy_ctxt = NULL;
mvmvif->link[0] = NULL;
iwl_mvm_mld_mac_ctxt_remove(mvm, vif);
out_unlock:
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_mld_mac_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (iwl_mvm_mac_remove_interface_common(hw, vif))
goto out;
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
mvm->p2p_device_vif = NULL;
iwl_mvm_mld_rm_bcast_sta(mvm, vif);
/* Link needs to be deactivated before removal */
iwl_mvm_link_changed(mvm, vif, LINK_CONTEXT_MODIFY_ACTIVE,
false);
iwl_mvm_remove_link(mvm, vif);
iwl_mvm_phy_ctxt_unref(mvm, mvmvif->deflink.phy_ctxt);
mvmvif->deflink.phy_ctxt = NULL;
}
iwl_mvm_mld_mac_ctxt_remove(mvm, vif);
RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);
if (vif->type == NL80211_IFTYPE_MONITOR) {
mvm->monitor_on = false;
__clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
}
out:
mutex_unlock(&mvm->mutex);
}
static int __iwl_mvm_mld_assign_vif_chanctx(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx,
bool switching_chanctx)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
if (__iwl_mvm_assign_vif_chanctx_common(mvm, vif, ctx,
switching_chanctx, &ret))
goto out;
ret = iwl_mvm_add_link(mvm, vif);
if (ret)
goto out;
ret = iwl_mvm_link_changed(mvm, vif, LINK_CONTEXT_MODIFY_ACTIVE,
true);
if (ret)
goto out_remove_link;
/*
* Power state must be updated before quotas,
* otherwise fw will complain.
*/
iwl_mvm_power_update_mac(mvm);
if (vif->type == NL80211_IFTYPE_MONITOR) {
ret = iwl_mvm_mld_add_snif_sta(mvm, vif);
if (ret)
goto out_remove_link;
}
goto out;
out_remove_link:
/* Link needs to be deactivated before removal */
iwl_mvm_link_changed(mvm, vif, LINK_CONTEXT_MODIFY_ACTIVE, false);
iwl_mvm_remove_link(mvm, vif);
iwl_mvm_power_update_mac(mvm);
out:
if (ret)
mvmvif->deflink.phy_ctxt = NULL;
return ret;
}
static int iwl_mvm_mld_assign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
mutex_lock(&mvm->mutex);
ret = __iwl_mvm_mld_assign_vif_chanctx(mvm, vif, ctx, false);
mutex_unlock(&mvm->mutex);
return ret;
}
static void __iwl_mvm_mld_unassign_vif_chanctx(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_chanctx_conf *ctx,
bool switching_chanctx)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (__iwl_mvm_unassign_vif_chanctx_common(mvm, vif, switching_chanctx))
goto out;
if (vif->type == NL80211_IFTYPE_MONITOR)
iwl_mvm_mld_rm_snif_sta(mvm, vif);
if (vif->type == NL80211_IFTYPE_AP)
/* Set CS bit on all the stations */
iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif, true);
/* Link needs to be deactivated before removal */
iwl_mvm_link_changed(mvm, vif, LINK_CONTEXT_MODIFY_ACTIVE, false);
iwl_mvm_remove_link(mvm, vif);
out:
if (switching_chanctx)
return;
mvmvif->deflink.phy_ctxt = NULL;
iwl_mvm_power_update_mac(mvm);
}
static void iwl_mvm_mld_unassign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *ctx)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
__iwl_mvm_mld_unassign_vif_chanctx(mvm, vif, ctx, false);
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_mld_start_ap_ibss(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
mutex_lock(&mvm->mutex);
/* Send the beacon template */
ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
if (ret)
goto out_unlock;
/* No need to re-calculate the tsf_is, as it was offloaded */
/* Add the mac context */
ret = iwl_mvm_mld_mac_ctxt_add(mvm, vif);
if (ret)
goto out_unlock;
/* Add link and activate it */
ret = iwl_mvm_add_link(mvm, vif);
if (ret)
goto out_remove_mac;
ret = iwl_mvm_link_changed(mvm, vif, LINK_CONTEXT_MODIFY_ACTIVE,
true);
if (ret)
goto out_remove_link;
ret = iwl_mvm_mld_add_mcast_sta(mvm, vif);
if (ret)
goto out_remove_link;
/* Send the bcast station. At this stage the TBTT and DTIM time
* events are added and applied to the scheduler
*/
ret = iwl_mvm_mld_add_bcast_sta(mvm, vif);
if (ret)
goto out_rm_mcast;
if (iwl_mvm_start_ap_ibss_common(hw, vif, &ret))
goto out_failed;
/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
if (vif->p2p && mvm->p2p_device_vif)
iwl_mvm_mld_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
iwl_mvm_bt_coex_vif_change(mvm);
/* we don't support TDLS during DCM */
if (iwl_mvm_phy_ctx_count(mvm) > 1)
iwl_mvm_teardown_tdls_peers(mvm);
iwl_mvm_ftm_restart_responder(mvm, vif);
goto out_unlock;
out_failed:
iwl_mvm_power_update_mac(mvm);
mvmvif->ap_ibss_active = false;
iwl_mvm_mld_rm_bcast_sta(mvm, vif);
out_rm_mcast:
iwl_mvm_mld_rm_mcast_sta(mvm, vif);
out_remove_link:
/* Link needs to be deactivated before removal */
iwl_mvm_link_changed(mvm, vif, LINK_CONTEXT_MODIFY_ACTIVE, false);
iwl_mvm_remove_link(mvm, vif);
out_remove_mac:
iwl_mvm_mld_mac_ctxt_remove(mvm, vif);
out_unlock:
mutex_unlock(&mvm->mutex);
return ret;
}
static void iwl_mvm_mld_stop_ap_ibss(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
iwl_mvm_stop_ap_ibss_common(mvm, vif);
/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
if (vif->p2p && mvm->p2p_device_vif)
iwl_mvm_mld_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
iwl_mvm_ftm_responder_clear(mvm, vif);
iwl_mvm_mld_rm_bcast_sta(mvm, vif);
iwl_mvm_mld_rm_mcast_sta(mvm, vif);
/* Link needs to be deactivated before removal */
iwl_mvm_link_changed(mvm, vif, LINK_CONTEXT_MODIFY_ACTIVE, false);
iwl_mvm_remove_link(mvm, vif);
iwl_mvm_power_update_mac(mvm);
iwl_mvm_mld_mac_ctxt_remove(mvm, vif);
mutex_unlock(&mvm->mutex);
}
const struct ieee80211_ops iwl_mvm_mld_hw_ops = {
.add_interface = iwl_mvm_mld_mac_add_interface,
.remove_interface = iwl_mvm_mld_mac_remove_interface,
.assign_vif_chanctx = iwl_mvm_mld_assign_vif_chanctx,
.unassign_vif_chanctx = iwl_mvm_mld_unassign_vif_chanctx,
.join_ibss = iwl_mvm_mld_start_ap_ibss,
.leave_ibss = iwl_mvm_mld_stop_ap_ibss,
};
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