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|
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2022-2023 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);
mvmvif->mvm = mvm;
/* Not much to do here. The stack will not allow interface
* types or combinations that we didn't advertise, so we
* don't really have to check the types.
*/
/* make sure that beacon statistics don't go backwards with FW reset */
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
mvmvif->deflink.beacon_stats.accu_num_beacons +=
mvmvif->deflink.beacon_stats.num_beacons;
/* Allocate resources for the MAC context, and add it to the fw */
ret = iwl_mvm_mac_ctxt_init(mvm, vif);
if (ret)
goto out_unlock;
rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);
mvmvif->features |= hw->netdev_features;
/* reset deflink MLO parameters */
mvmvif->deflink.fw_link_id = IWL_MVM_FW_LINK_ID_INVALID;
mvmvif->deflink.active = 0;
/* the first link always points to the default one */
mvmvif->link[0] = &mvmvif->deflink;
ret = iwl_mvm_mld_mac_ctxt_add(mvm, vif);
if (ret)
goto out_unlock;
/* 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;
}
ret = iwl_mvm_add_link(mvm, vif, &vif->bss_conf);
if (ret)
goto out_free_bf;
/* 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
*/
if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
mvm->p2p_device_vif = vif;
ret = iwl_mvm_power_update_mac(mvm);
if (ret)
goto out_free_bf;
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_add_link(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_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->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);
struct iwl_probe_resp_data *probe_data;
iwl_mvm_prepare_mac_removal(mvm, vif);
if (!(vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_ADHOC))
iwl_mvm_tcm_rm_vif(mvm, vif);
mutex_lock(&mvm->mutex);
if (vif == mvm->csme_vif) {
iwl_mei_set_netdev(NULL);
mvm->csme_vif = NULL;
}
if (mvm->bf_allowed_vif == mvmvif) {
mvm->bf_allowed_vif = NULL;
vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
IEEE80211_VIF_SUPPORTS_CQM_RSSI);
}
if (vif->bss_conf.ftm_responder)
memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats));
iwl_mvm_vif_dbgfs_rm_link(mvm, vif);
/* For AP/GO interface, the tear down of the resources allocated to the
* interface is be handled as part of the stop_ap flow.
*/
if (vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_ADHOC) {
#ifdef CONFIG_NL80211_TESTMODE
if (vif == mvm->noa_vif) {
mvm->noa_vif = NULL;
mvm->noa_duration = 0;
}
#endif
}
iwl_mvm_power_update_mac(mvm);
/* Before the interface removal, mac80211 would cancel the ROC, and the
* ROC worker would be scheduled if needed. The worker would be flushed
* in iwl_mvm_prepare_mac_removal() and thus at this point the link is
* not active. So need only to remove the link.
*/
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
if (mvmvif->deflink.phy_ctxt) {
iwl_mvm_phy_ctxt_unref(mvm, mvmvif->deflink.phy_ctxt);
mvmvif->deflink.phy_ctxt = NULL;
}
mvm->p2p_device_vif = NULL;
iwl_mvm_remove_link(mvm, vif, &vif->bss_conf);
} else {
iwl_mvm_disable_link(mvm, vif, &vif->bss_conf);
}
iwl_mvm_mld_mac_ctxt_remove(mvm, vif);
RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);
probe_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
lockdep_is_held(&mvm->mutex));
RCU_INIT_POINTER(mvmvif->deflink.probe_resp_data, NULL);
if (probe_data)
kfree_rcu(probe_data, rcu_head);
if (vif->type == NL80211_IFTYPE_MONITOR) {
mvm->monitor_on = false;
__clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
}
mutex_unlock(&mvm->mutex);
}
static unsigned int iwl_mvm_mld_count_active_links(struct ieee80211_vif *vif)
{
unsigned int n_active = 0;
int i;
for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) {
struct ieee80211_bss_conf *link_conf;
link_conf = link_conf_dereference_protected(vif, i);
if (link_conf &&
rcu_access_pointer(link_conf->chanctx_conf))
n_active++;
}
return n_active;
}
static int iwl_mvm_esr_mode_active(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int link_id, ret = 0;
mvmvif->esr_active = true;
/* Indicate to mac80211 that EML is enabled */
vif->driver_flags |= IEEE80211_VIF_EML_ACTIVE;
iwl_mvm_update_smps_on_active_links(mvm, vif, IWL_MVM_SMPS_REQ_FW,
IEEE80211_SMPS_OFF);
for_each_mvm_vif_valid_link(mvmvif, link_id) {
struct iwl_mvm_vif_link_info *link = mvmvif->link[link_id];
if (!link->phy_ctxt)
continue;
ret = iwl_mvm_phy_send_rlc(mvm, link->phy_ctxt, 2, 2);
if (ret)
break;
link->phy_ctxt->rlc_disabled = true;
}
return ret;
}
static int
__iwl_mvm_mld_assign_vif_chanctx(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
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];
unsigned int n_active = iwl_mvm_mld_count_active_links(vif);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
unsigned int link_id = link_conf->link_id;
int ret;
/* if the assigned one was not counted yet, count it now */
if (!rcu_access_pointer(link_conf->chanctx_conf))
n_active++;
if (n_active > iwl_mvm_max_active_links(mvm, vif))
return -EOPNOTSUPP;
if (WARN_ON_ONCE(!mvmvif->link[link_id]))
return -EINVAL;
/* mac parameters such as HE support can change at this stage
* For sta, need first to configure correct state from drv_sta_state
* and only after that update mac config.
*/
if (vif->type == NL80211_IFTYPE_AP) {
ret = iwl_mvm_mld_mac_ctxt_changed(mvm, vif, false);
if (ret) {
IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
return -EINVAL;
}
}
if (iwl_mvm_is_esr_supported(mvm->fwrt.trans) && n_active > 1) {
mvmvif->link[link_id]->listen_lmac = true;
ret = iwl_mvm_esr_mode_active(mvm, vif);
if (ret) {
IWL_ERR(mvm, "failed to activate ESR mode (%d)\n", ret);
return ret;
}
}
mvmvif->link[link_id]->phy_ctxt = phy_ctxt;
if (switching_chanctx) {
/* reactivate if we turned this off during channel switch */
if (vif->type == NL80211_IFTYPE_AP)
mvmvif->ap_ibss_active = true;
}
/* send it first with phy context ID */
ret = iwl_mvm_link_changed(mvm, vif, link_conf, 0, false);
if (ret)
goto out;
/* Initialize rate control for the AP station, since we might be
* doing a link switch here - we cannot initialize it before since
* this needs the phy context assigned (and in FW?), and we cannot
* do it later because it needs to be initialized as soon as we're
* able to TX on the link, i.e. when active.
*
* Firmware restart isn't quite correct yet for MLO, but we don't
* need to do it in that case anyway since it will happen from the
* normal station state callback.
*/
if (mvmvif->ap_sta &&
!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
struct ieee80211_link_sta *link_sta;
rcu_read_lock();
link_sta = rcu_dereference(mvmvif->ap_sta->link[link_id]);
if (!WARN_ON_ONCE(!link_sta))
iwl_mvm_rs_rate_init(mvm, vif, mvmvif->ap_sta,
link_conf, link_sta,
phy_ctxt->channel->band);
rcu_read_unlock();
}
/* then activate */
ret = iwl_mvm_link_changed(mvm, vif, link_conf,
LINK_CONTEXT_MODIFY_ACTIVE |
LINK_CONTEXT_MODIFY_RATES_INFO,
true);
if (ret)
goto out;
/*
* 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, link_conf);
if (ret)
goto deactivate;
}
return 0;
deactivate:
iwl_mvm_link_changed(mvm, vif, link_conf, LINK_CONTEXT_MODIFY_ACTIVE,
false);
out:
mvmvif->link[link_id]->phy_ctxt = NULL;
iwl_mvm_power_update_mac(mvm);
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, link_conf, ctx, false);
mutex_unlock(&mvm->mutex);
return ret;
}
static int iwl_mvm_esr_mode_inactive(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct ieee80211_bss_conf *link_conf;
int link_id, ret = 0;
mvmvif->esr_active = false;
vif->driver_flags &= ~IEEE80211_VIF_EML_ACTIVE;
iwl_mvm_update_smps_on_active_links(mvm, vif, IWL_MVM_SMPS_REQ_FW,
IEEE80211_SMPS_AUTOMATIC);
for_each_vif_active_link(vif, link_conf, link_id) {
struct ieee80211_chanctx_conf *chanctx_conf;
struct iwl_mvm_phy_ctxt *phy_ctxt;
u8 static_chains, dynamic_chains;
mvmvif->link[link_id]->listen_lmac = false;
rcu_read_lock();
chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
phy_ctxt = mvmvif->link[link_id]->phy_ctxt;
if (!chanctx_conf || !phy_ctxt) {
rcu_read_unlock();
continue;
}
phy_ctxt->rlc_disabled = false;
static_chains = chanctx_conf->rx_chains_static;
dynamic_chains = chanctx_conf->rx_chains_dynamic;
rcu_read_unlock();
ret = iwl_mvm_phy_send_rlc(mvm, phy_ctxt, static_chains,
dynamic_chains);
if (ret)
break;
}
return ret;
}
static void
__iwl_mvm_mld_unassign_vif_chanctx(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *ctx,
bool switching_chanctx)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
unsigned int n_active = iwl_mvm_mld_count_active_links(vif);
unsigned int link_id = link_conf->link_id;
/* shouldn't happen, but verify link_id is valid before accessing */
if (WARN_ON_ONCE(!mvmvif->link[link_id]))
return;
if (vif->type == NL80211_IFTYPE_AP && switching_chanctx) {
mvmvif->csa_countdown = false;
/* Set CS bit on all the stations */
iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
/* Save blocked iface, the timeout is set on the next beacon */
rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
mvmvif->ap_ibss_active = false;
}
if (iwl_mvm_is_esr_supported(mvm->fwrt.trans) && n_active > 1) {
int ret = iwl_mvm_esr_mode_inactive(mvm, vif);
if (ret)
IWL_ERR(mvm, "failed to deactivate ESR mode (%d)\n",
ret);
}
if (vif->type == NL80211_IFTYPE_MONITOR)
iwl_mvm_mld_rm_snif_sta(mvm, vif);
iwl_mvm_link_changed(mvm, vif, link_conf,
LINK_CONTEXT_MODIFY_ACTIVE, false);
if (switching_chanctx)
return;
mvmvif->link[link_id]->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, link_conf, ctx, false);
mutex_unlock(&mvm->mutex);
}
static int iwl_mvm_mld_start_ap_ibss(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
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, link_conf);
if (ret)
goto out_unlock;
/* the link should be already activated when assigning chan context */
ret = iwl_mvm_link_changed(mvm, vif, link_conf,
LINK_CONTEXT_MODIFY_ALL &
~LINK_CONTEXT_MODIFY_ACTIVE,
true);
if (ret)
goto out_unlock;
ret = iwl_mvm_mld_add_mcast_sta(mvm, vif, link_conf);
if (ret)
goto out_unlock;
/* 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, link_conf);
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, link_conf);
goto out_unlock;
out_failed:
iwl_mvm_power_update_mac(mvm);
mvmvif->ap_ibss_active = false;
iwl_mvm_mld_rm_bcast_sta(mvm, vif, link_conf);
out_rm_mcast:
iwl_mvm_mld_rm_mcast_sta(mvm, vif, link_conf);
out_unlock:
mutex_unlock(&mvm->mutex);
return ret;
}
static int iwl_mvm_mld_start_ap(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
return iwl_mvm_mld_start_ap_ibss(hw, vif, link_conf);
}
static int iwl_mvm_mld_start_ibss(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
return iwl_mvm_mld_start_ap_ibss(hw, vif, &vif->bss_conf);
}
static void iwl_mvm_mld_stop_ap_ibss(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
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, link_conf);
iwl_mvm_mld_rm_mcast_sta(mvm, vif, link_conf);
iwl_mvm_power_update_mac(mvm);
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_mld_stop_ap(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
iwl_mvm_mld_stop_ap_ibss(hw, vif, link_conf);
}
static void iwl_mvm_mld_stop_ibss(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
iwl_mvm_mld_stop_ap_ibss(hw, vif, &vif->bss_conf);
}
static int iwl_mvm_mld_mac_sta_state(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
enum ieee80211_sta_state old_state,
enum ieee80211_sta_state new_state)
{
static const struct iwl_mvm_sta_state_ops callbacks = {
.add_sta = iwl_mvm_mld_add_sta,
.update_sta = iwl_mvm_mld_update_sta,
.rm_sta = iwl_mvm_mld_rm_sta,
.mac_ctxt_changed = iwl_mvm_mld_mac_ctxt_changed,
};
return iwl_mvm_mac_sta_state_common(hw, vif, sta, old_state, new_state,
&callbacks);
}
struct iwl_mvm_link_sel_data {
u8 link_id;
enum nl80211_band band;
bool active;
};
static bool iwl_mvm_mld_valid_link_pair(struct iwl_mvm_link_sel_data *a,
struct iwl_mvm_link_sel_data *b)
{
return a->band != b->band;
}
void iwl_mvm_mld_select_links(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
bool valid_links_changed)
{
struct iwl_mvm_link_sel_data data[IEEE80211_MLD_MAX_NUM_LINKS];
unsigned long usable_links = ieee80211_vif_usable_links(vif);
u32 max_active_links = iwl_mvm_max_active_links(mvm, vif);
u16 new_active_links;
u8 link_id, n_data = 0, i, j;
if (!IWL_MVM_AUTO_EML_ENABLE)
return;
if (!ieee80211_vif_is_mld(vif) || usable_links == 1)
return;
/* The logic below is a simple version that doesn't suit more than 2
* links
*/
WARN_ON_ONCE(max_active_links > 2);
/* if only a single active link is supported, assume that the one
* selected by higher layer for connection establishment is the best.
*/
if (max_active_links == 1 && !valid_links_changed)
return;
/* If we are already using the maximal number of active links, don't do
* any change. This can later be optimized to pick a 'better' link pair.
*/
if (hweight16(vif->active_links) == max_active_links)
return;
rcu_read_lock();
for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) {
struct ieee80211_bss_conf *link_conf =
rcu_dereference(vif->link_conf[link_id]);
if (WARN_ON_ONCE(!link_conf))
continue;
data[n_data].link_id = link_id;
data[n_data].band = link_conf->chandef.chan->band;
data[n_data].active = vif->active_links & BIT(link_id);
n_data++;
}
rcu_read_unlock();
/* this is expected to be the current active link */
if (n_data == 1)
return;
new_active_links = 0;
/* Assume that after association only a single link is active, thus,
* select only the 2nd link
*/
if (!valid_links_changed) {
for (i = 0; i < n_data; i++) {
if (data[i].active)
break;
}
if (WARN_ON_ONCE(i == n_data))
return;
for (j = 0; j < n_data; j++) {
if (i == j)
continue;
if (iwl_mvm_mld_valid_link_pair(&data[i], &data[j]))
break;
}
if (j != n_data)
new_active_links = BIT(data[i].link_id) |
BIT(data[j].link_id);
} else {
/* Try to find a valid link pair for EMLSR operation. If a pair
* is not found continue using the current active link.
*/
for (i = 0; i < n_data; i++) {
for (j = 0; j < n_data; j++) {
if (i == j)
continue;
if (iwl_mvm_mld_valid_link_pair(&data[i],
&data[j]))
break;
}
/* found a valid pair for EMLSR, use it */
if (j != n_data) {
new_active_links = BIT(data[i].link_id) |
BIT(data[j].link_id);
break;
}
}
}
if (WARN_ON(!new_active_links))
return;
if (vif->active_links != new_active_links)
ieee80211_set_active_links_async(vif, new_active_links);
}
static void
iwl_mvm_mld_link_info_changed_station(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
u64 changes)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
bool has_he, has_eht;
u32 link_changes = 0;
int ret;
if (WARN_ON_ONCE(!mvmvif->link[link_conf->link_id]))
return;
has_he = link_conf->he_support && !iwlwifi_mod_params.disable_11ax;
has_eht = link_conf->eht_support && !iwlwifi_mod_params.disable_11be;
/* Update EDCA params */
if (changes & BSS_CHANGED_QOS && vif->cfg.assoc && link_conf->qos)
link_changes |= LINK_CONTEXT_MODIFY_QOS_PARAMS;
if (changes & BSS_CHANGED_ERP_SLOT)
link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO;
if (vif->cfg.assoc && (has_he || has_eht)) {
IWL_DEBUG_MAC80211(mvm, "Associated in HE mode\n");
link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS;
}
/* Update EHT Puncturing info */
if (changes & BSS_CHANGED_EHT_PUNCTURING && vif->cfg.assoc)
link_changes |= LINK_CONTEXT_MODIFY_EHT_PARAMS;
if (link_changes) {
ret = iwl_mvm_link_changed(mvm, vif, link_conf, link_changes,
true);
if (ret)
IWL_ERR(mvm, "failed to update link\n");
}
ret = iwl_mvm_mld_mac_ctxt_changed(mvm, vif, false);
if (ret)
IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
if (changes & BSS_CHANGED_MLD_VALID_LINKS)
iwl_mvm_mld_select_links(mvm, vif, true);
memcpy(mvmvif->link[link_conf->link_id]->bssid, link_conf->bssid,
ETH_ALEN);
iwl_mvm_bss_info_changed_station_common(mvm, vif, link_conf, changes);
}
static bool iwl_mvm_mld_vif_have_valid_ap_sta(struct iwl_mvm_vif *mvmvif)
{
int i;
for_each_mvm_vif_valid_link(mvmvif, i) {
if (mvmvif->link[i]->ap_sta_id != IWL_MVM_INVALID_STA)
return true;
}
return false;
}
static void iwl_mvm_mld_vif_delete_all_stas(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int i, ret;
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
return;
for_each_mvm_vif_valid_link(mvmvif, i) {
struct iwl_mvm_vif_link_info *link = mvmvif->link[i];
if (!link)
continue;
iwl_mvm_sec_key_remove_ap(mvm, vif, link, i);
ret = iwl_mvm_mld_rm_sta_id(mvm, link->ap_sta_id);
if (ret)
IWL_ERR(mvm, "failed to remove AP station\n");
link->ap_sta_id = IWL_MVM_INVALID_STA;
}
}
static void iwl_mvm_mld_vif_cfg_changed_station(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
u64 changes)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct ieee80211_bss_conf *link_conf;
bool protect = false;
unsigned int i;
int ret;
/* This might get called without active links during the
* chanctx switch, but we don't care about it anyway.
*/
if (changes == BSS_CHANGED_IDLE)
return;
ret = iwl_mvm_mld_mac_ctxt_changed(mvm, vif, false);
if (ret)
IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
mvmvif->associated = vif->cfg.assoc;
if (changes & BSS_CHANGED_ASSOC) {
if (vif->cfg.assoc) {
/* clear statistics to get clean beacon counter */
iwl_mvm_request_statistics(mvm, true);
iwl_mvm_sf_update(mvm, vif, false);
iwl_mvm_power_vif_assoc(mvm, vif);
for_each_mvm_vif_valid_link(mvmvif, i) {
memset(&mvmvif->link[i]->beacon_stats, 0,
sizeof(mvmvif->link[i]->beacon_stats));
if (vif->p2p) {
iwl_mvm_update_smps(mvm, vif,
IWL_MVM_SMPS_REQ_PROT,
IEEE80211_SMPS_DYNAMIC, i);
}
rcu_read_lock();
link_conf = rcu_dereference(vif->link_conf[i]);
if (link_conf && !link_conf->dtim_period)
protect = true;
rcu_read_unlock();
}
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
protect) {
/* If we're not restarting and still haven't
* heard a beacon (dtim period unknown) then
* make sure we still have enough minimum time
* remaining in the time event, since the auth
* might actually have taken quite a while
* (especially for SAE) and so the remaining
* time could be small without us having heard
* a beacon yet.
*/
iwl_mvm_protect_assoc(mvm, vif, 0);
}
iwl_mvm_sf_update(mvm, vif, false);
/* FIXME: need to decide about misbehaving AP handling */
iwl_mvm_power_vif_assoc(mvm, vif);
} else if (iwl_mvm_mld_vif_have_valid_ap_sta(mvmvif)) {
iwl_mvm_mei_host_disassociated(mvm);
/* If update fails - SF might be running in associated
* mode while disassociated - which is forbidden.
*/
ret = iwl_mvm_sf_update(mvm, vif, false);
WARN_ONCE(ret &&
!test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
&mvm->status),
"Failed to update SF upon disassociation\n");
/* If we get an assert during the connection (after the
* station has been added, but before the vif is set
* to associated), mac80211 will re-add the station and
* then configure the vif. Since the vif is not
* associated, we would remove the station here and
* this would fail the recovery.
*/
iwl_mvm_mld_vif_delete_all_stas(mvm, vif);
}
iwl_mvm_bss_info_changed_station_assoc(mvm, vif, changes);
}
if (changes & BSS_CHANGED_PS) {
ret = iwl_mvm_power_update_mac(mvm);
if (ret)
IWL_ERR(mvm, "failed to update power mode\n");
}
}
static void
iwl_mvm_mld_link_info_changed_ap_ibss(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
u64 changes)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
u32 link_changes = LINK_CONTEXT_MODIFY_PROTECT_FLAGS |
LINK_CONTEXT_MODIFY_QOS_PARAMS;
/* Changes will be applied when the AP/IBSS is started */
if (!mvmvif->ap_ibss_active)
return;
if (link_conf->he_support)
link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS;
if (changes & BSS_CHANGED_ERP_SLOT)
link_changes |= LINK_CONTEXT_MODIFY_RATES_INFO;
if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_SLOT |
BSS_CHANGED_HT |
BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS |
BSS_CHANGED_HE_BSS_COLOR) &&
iwl_mvm_link_changed(mvm, vif, link_conf,
link_changes, true))
IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
/* Need to send a new beacon template to the FW */
if (changes & BSS_CHANGED_BEACON &&
iwl_mvm_mac_ctxt_beacon_changed(mvm, vif, link_conf))
IWL_WARN(mvm, "Failed updating beacon data\n");
/* FIXME: need to decide if we need FTM responder per link */
if (changes & BSS_CHANGED_FTM_RESPONDER) {
int ret = iwl_mvm_ftm_start_responder(mvm, vif, link_conf);
if (ret)
IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n",
ret);
}
}
static void iwl_mvm_mld_link_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
u64 changes)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
switch (vif->type) {
case NL80211_IFTYPE_STATION:
iwl_mvm_mld_link_info_changed_station(mvm, vif, link_conf,
changes);
break;
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_ADHOC:
iwl_mvm_mld_link_info_changed_ap_ibss(mvm, vif, link_conf,
changes);
break;
case NL80211_IFTYPE_MONITOR:
if (changes & BSS_CHANGED_MU_GROUPS)
iwl_mvm_update_mu_groups(mvm, vif);
break;
default:
/* shouldn't happen */
WARN_ON_ONCE(1);
}
if (changes & BSS_CHANGED_TXPOWER) {
IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d dBm\n",
link_conf->txpower);
iwl_mvm_set_tx_power(mvm, vif, link_conf->txpower);
}
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_mld_vif_cfg_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u64 changes)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
mutex_lock(&mvm->mutex);
if (changes & BSS_CHANGED_IDLE && !vif->cfg.idle)
iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
if (vif->type == NL80211_IFTYPE_STATION)
iwl_mvm_mld_vif_cfg_changed_station(mvm, vif, changes);
mutex_unlock(&mvm->mutex);
}
static int
iwl_mvm_mld_switch_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif_chanctx_switch *vifs,
int n_vifs,
enum ieee80211_chanctx_switch_mode mode)
{
static const struct iwl_mvm_switch_vif_chanctx_ops ops = {
.__assign_vif_chanctx = __iwl_mvm_mld_assign_vif_chanctx,
.__unassign_vif_chanctx = __iwl_mvm_mld_unassign_vif_chanctx,
};
return iwl_mvm_switch_vif_chanctx_common(hw, vifs, n_vifs, mode, &ops);
}
static void iwl_mvm_mld_config_iface_filter(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
unsigned int filter_flags,
unsigned int changed_flags)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
/* We support only filter for probe requests */
if (!(changed_flags & FIF_PROBE_REQ))
return;
/* Supported only for p2p client interfaces */
if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc ||
!vif->p2p)
return;
mutex_lock(&mvm->mutex);
iwl_mvm_mld_mac_ctxt_changed(mvm, vif, false);
mutex_unlock(&mvm->mutex);
}
static int
iwl_mvm_mld_mac_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
unsigned int link_id, u16 ac,
const struct ieee80211_tx_queue_params *params)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_vif_link_info *mvm_link = mvmvif->link[link_id];
if (!mvm_link)
return -EINVAL;
mvm_link->queue_params[ac] = *params;
/* No need to update right away, we'll get BSS_CHANGED_QOS
* The exception is P2P_DEVICE interface which needs immediate update.
*/
if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
int ret;
mutex_lock(&mvm->mutex);
ret = iwl_mvm_link_changed(mvm, vif, &vif->bss_conf,
LINK_CONTEXT_MODIFY_QOS_PARAMS,
true);
mutex_unlock(&mvm->mutex);
return ret;
}
return 0;
}
static int iwl_mvm_mld_roc_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
int ret;
lockdep_assert_held(&mvm->mutex);
/* The PHY context ID might have changed so need to set it */
ret = iwl_mvm_link_changed(mvm, vif, &vif->bss_conf, 0, false);
if (WARN(ret, "Failed to set PHY context ID\n"))
return ret;
ret = iwl_mvm_link_changed(mvm, vif, &vif->bss_conf,
LINK_CONTEXT_MODIFY_ACTIVE |
LINK_CONTEXT_MODIFY_RATES_INFO,
true);
if (WARN(ret, "Failed linking P2P_DEVICE\n"))
return ret;
/* The station and queue allocation must be done only after the linking
* is done, as otherwise the FW might incorrectly configure its state.
*/
return iwl_mvm_mld_add_bcast_sta(mvm, vif, &vif->bss_conf);
}
static int iwl_mvm_mld_roc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_channel *channel, int duration,
enum ieee80211_roc_type type)
{
static const struct iwl_mvm_roc_ops ops = {
.add_aux_sta_for_hs20 = iwl_mvm_mld_add_aux_sta,
.link = iwl_mvm_mld_roc_link,
};
return iwl_mvm_roc_common(hw, vif, channel, duration, type, &ops);
}
static int
iwl_mvm_mld_change_vif_links(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u16 old_links, u16 new_links,
struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS])
{
struct iwl_mvm_vif_link_info *new_link[IEEE80211_MLD_MAX_NUM_LINKS] = {};
unsigned int n_active = iwl_mvm_mld_count_active_links(vif);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
u16 removed = old_links & ~new_links;
u16 added = new_links & ~old_links;
int err, i;
if (hweight16(new_links) > 1 &&
n_active > iwl_mvm_max_active_links(mvm, vif))
return -EOPNOTSUPP;
for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) {
int r;
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
break;
if (!(added & BIT(i)))
continue;
new_link[i] = kzalloc(sizeof(*new_link[i]), GFP_KERNEL);
if (!new_link[i]) {
err = -ENOMEM;
goto free;
}
new_link[i]->bcast_sta.sta_id = IWL_MVM_INVALID_STA;
new_link[i]->mcast_sta.sta_id = IWL_MVM_INVALID_STA;
new_link[i]->ap_sta_id = IWL_MVM_INVALID_STA;
new_link[i]->fw_link_id = IWL_MVM_FW_LINK_ID_INVALID;
for (r = 0; r < NUM_IWL_MVM_SMPS_REQ; r++)
new_link[i]->smps_requests[r] =
IEEE80211_SMPS_AUTOMATIC;
}
mutex_lock(&mvm->mutex);
if (old_links == 0) {
err = iwl_mvm_disable_link(mvm, vif, &vif->bss_conf);
if (err)
goto out_err;
mvmvif->link[0] = NULL;
}
for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) {
if (removed & BIT(i)) {
struct ieee80211_bss_conf *link_conf = old[i];
err = iwl_mvm_disable_link(mvm, vif, link_conf);
if (err)
goto out_err;
kfree(mvmvif->link[i]);
mvmvif->link[i] = NULL;
} else if (added & BIT(i)) {
struct ieee80211_bss_conf *link_conf;
link_conf = link_conf_dereference_protected(vif, i);
if (WARN_ON(!link_conf))
continue;
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
&mvm->status))
mvmvif->link[i] = new_link[i];
new_link[i] = NULL;
err = iwl_mvm_add_link(mvm, vif, link_conf);
if (err)
goto out_err;
}
}
err = 0;
if (new_links == 0) {
mvmvif->link[0] = &mvmvif->deflink;
err = iwl_mvm_add_link(mvm, vif, &vif->bss_conf);
}
out_err:
/* we really don't have a good way to roll back here ... */
mutex_unlock(&mvm->mutex);
free:
for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++)
kfree(new_link[i]);
return err;
}
static int
iwl_mvm_mld_change_sta_links(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
u16 old_links, u16 new_links)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
mutex_lock(&mvm->mutex);
ret = iwl_mvm_mld_update_sta_links(mvm, vif, sta, old_links, new_links);
mutex_unlock(&mvm->mutex);
return ret;
}
const struct ieee80211_ops iwl_mvm_mld_hw_ops = {
.tx = iwl_mvm_mac_tx,
.wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
.ampdu_action = iwl_mvm_mac_ampdu_action,
.get_antenna = iwl_mvm_op_get_antenna,
.set_antenna = iwl_mvm_op_set_antenna,
.start = iwl_mvm_mac_start,
.reconfig_complete = iwl_mvm_mac_reconfig_complete,
.stop = iwl_mvm_mac_stop,
.add_interface = iwl_mvm_mld_mac_add_interface,
.remove_interface = iwl_mvm_mld_mac_remove_interface,
.config = iwl_mvm_mac_config,
.prepare_multicast = iwl_mvm_prepare_multicast,
.configure_filter = iwl_mvm_configure_filter,
.config_iface_filter = iwl_mvm_mld_config_iface_filter,
.link_info_changed = iwl_mvm_mld_link_info_changed,
.vif_cfg_changed = iwl_mvm_mld_vif_cfg_changed,
.hw_scan = iwl_mvm_mac_hw_scan,
.cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
.sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
.sta_state = iwl_mvm_mld_mac_sta_state,
.sta_notify = iwl_mvm_mac_sta_notify,
.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
.release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
.sta_rc_update = iwl_mvm_sta_rc_update,
.conf_tx = iwl_mvm_mld_mac_conf_tx,
.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
.mgd_complete_tx = iwl_mvm_mac_mgd_complete_tx,
.mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
.flush = iwl_mvm_mac_flush,
.flush_sta = iwl_mvm_mac_flush_sta,
.sched_scan_start = iwl_mvm_mac_sched_scan_start,
.sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
.set_key = iwl_mvm_mac_set_key,
.update_tkip_key = iwl_mvm_mac_update_tkip_key,
.remain_on_channel = iwl_mvm_mld_roc,
.cancel_remain_on_channel = iwl_mvm_cancel_roc,
.add_chanctx = iwl_mvm_add_chanctx,
.remove_chanctx = iwl_mvm_remove_chanctx,
.change_chanctx = iwl_mvm_change_chanctx,
.assign_vif_chanctx = iwl_mvm_mld_assign_vif_chanctx,
.unassign_vif_chanctx = iwl_mvm_mld_unassign_vif_chanctx,
.switch_vif_chanctx = iwl_mvm_mld_switch_vif_chanctx,
.start_ap = iwl_mvm_mld_start_ap,
.stop_ap = iwl_mvm_mld_stop_ap,
.join_ibss = iwl_mvm_mld_start_ibss,
.leave_ibss = iwl_mvm_mld_stop_ibss,
.tx_last_beacon = iwl_mvm_tx_last_beacon,
.set_tim = iwl_mvm_set_tim,
.channel_switch = iwl_mvm_channel_switch,
.pre_channel_switch = iwl_mvm_pre_channel_switch,
.post_channel_switch = iwl_mvm_post_channel_switch,
.abort_channel_switch = iwl_mvm_abort_channel_switch,
.channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon,
.tdls_channel_switch = iwl_mvm_tdls_channel_switch,
.tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
.tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
.event_callback = iwl_mvm_mac_event_callback,
.sync_rx_queues = iwl_mvm_sync_rx_queues,
CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
#ifdef CONFIG_PM_SLEEP
/* look at d3.c */
.suspend = iwl_mvm_suspend,
.resume = iwl_mvm_resume,
.set_wakeup = iwl_mvm_set_wakeup,
.set_rekey_data = iwl_mvm_set_rekey_data,
#if IS_ENABLED(CONFIG_IPV6)
.ipv6_addr_change = iwl_mvm_ipv6_addr_change,
#endif
.set_default_unicast_key = iwl_mvm_set_default_unicast_key,
#endif
.get_survey = iwl_mvm_mac_get_survey,
.sta_statistics = iwl_mvm_mac_sta_statistics,
.get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats,
.start_pmsr = iwl_mvm_start_pmsr,
.abort_pmsr = iwl_mvm_abort_pmsr,
#ifdef CONFIG_IWLWIFI_DEBUGFS
.vif_add_debugfs = iwl_mvm_vif_add_debugfs,
.link_add_debugfs = iwl_mvm_link_add_debugfs,
.link_sta_add_debugfs = iwl_mvm_link_sta_add_debugfs,
#endif
.set_hw_timestamp = iwl_mvm_set_hw_timestamp,
.change_vif_links = iwl_mvm_mld_change_vif_links,
.change_sta_links = iwl_mvm_mld_change_sta_links,
};
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