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linux-stable/drivers/net/wireless/intel/iwlwifi/mvm/mld-sta.c

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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2022-2023 Intel Corporation
*/
#include "mvm.h"
#include "time-sync.h"
#include "sta.h"
u32 iwl_mvm_sta_fw_id_mask(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
int filter_link_id)
{
struct iwl_mvm_sta *mvmsta;
unsigned int link_id;
u32 result = 0;
if (!sta)
return 0;
mvmsta = iwl_mvm_sta_from_mac80211(sta);
/* it's easy when the STA is not an MLD */
if (!sta->valid_links)
return BIT(mvmsta->deflink.sta_id);
/* but if it is an MLD, get the mask of all the FW STAs it has ... */
for (link_id = 0; link_id < ARRAY_SIZE(mvmsta->link); link_id++) {
struct iwl_mvm_link_sta *link_sta;
/* unless we have a specific link in mind */
if (filter_link_id >= 0 && link_id != filter_link_id)
continue;
link_sta =
rcu_dereference_check(mvmsta->link[link_id],
lockdep_is_held(&mvm->mutex));
if (!link_sta)
continue;
result |= BIT(link_sta->sta_id);
}
return result;
}
static int iwl_mvm_mld_send_sta_cmd(struct iwl_mvm *mvm,
struct iwl_mvm_sta_cfg_cmd *cmd)
{
int ret = iwl_mvm_send_cmd_pdu(mvm,
WIDE_ID(MAC_CONF_GROUP, STA_CONFIG_CMD),
0, sizeof(*cmd), cmd);
if (ret)
IWL_ERR(mvm, "STA_CONFIG_CMD send failed, ret=0x%x\n", ret);
return ret;
}
/*
* Add an internal station to the FW table
*/
static int iwl_mvm_mld_add_int_sta_to_fw(struct iwl_mvm *mvm,
struct iwl_mvm_int_sta *sta,
const u8 *addr, int link_id)
{
struct iwl_mvm_sta_cfg_cmd cmd;
lockdep_assert_held(&mvm->mutex);
memset(&cmd, 0, sizeof(cmd));
cmd.sta_id = cpu_to_le32((u8)sta->sta_id);
cmd.link_id = cpu_to_le32(link_id);
cmd.station_type = cpu_to_le32(sta->type);
if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_STA_EXP_MFP_SUPPORT) &&
sta->type == STATION_TYPE_BCAST_MGMT)
cmd.mfp = cpu_to_le32(1);
if (addr) {
memcpy(cmd.peer_mld_address, addr, ETH_ALEN);
memcpy(cmd.peer_link_address, addr, ETH_ALEN);
}
return iwl_mvm_mld_send_sta_cmd(mvm, &cmd);
}
/*
* Remove a station from the FW table. Before sending the command to remove
* the station validate that the station is indeed known to the driver (sanity
* only).
*/
static int iwl_mvm_mld_rm_sta_from_fw(struct iwl_mvm *mvm, u32 sta_id)
{
struct iwl_mvm_remove_sta_cmd rm_sta_cmd = {
.sta_id = cpu_to_le32(sta_id),
};
int ret;
/* Note: internal stations are marked as error values */
if (!rcu_access_pointer(mvm->fw_id_to_mac_id[sta_id])) {
IWL_ERR(mvm, "Invalid station id %d\n", sta_id);
return -EINVAL;
}
ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, STA_REMOVE_CMD),
0, sizeof(rm_sta_cmd), &rm_sta_cmd);
if (ret) {
IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);
return ret;
}
return 0;
}
static int iwl_mvm_add_aux_sta_to_fw(struct iwl_mvm *mvm,
struct iwl_mvm_int_sta *sta,
u32 lmac_id)
{
int ret;
struct iwl_mvm_aux_sta_cmd cmd = {
.sta_id = cpu_to_le32(sta->sta_id),
.lmac_id = cpu_to_le32(lmac_id),
};
ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, AUX_STA_CMD),
0, sizeof(cmd), &cmd);
if (ret)
IWL_ERR(mvm, "Failed to send AUX_STA_CMD\n");
return ret;
}
/*
* Adds an internal sta to the FW table with its queues
*/
int iwl_mvm_mld_add_int_sta_with_queue(struct iwl_mvm *mvm,
struct iwl_mvm_int_sta *sta,
const u8 *addr, int link_id,
u16 *queue, u8 tid,
unsigned int *_wdg_timeout)
{
int ret, txq;
unsigned int wdg_timeout = _wdg_timeout ? *_wdg_timeout :
mvm->trans->trans_cfg->base_params->wd_timeout;
if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA))
return -ENOSPC;
if (sta->type == STATION_TYPE_AUX)
ret = iwl_mvm_add_aux_sta_to_fw(mvm, sta, link_id);
else
ret = iwl_mvm_mld_add_int_sta_to_fw(mvm, sta, addr, link_id);
if (ret)
return ret;
/*
* For 22000 firmware and on we cannot add queue to a station unknown
* to firmware so enable queue here - after the station was added
*/
txq = iwl_mvm_tvqm_enable_txq(mvm, NULL, sta->sta_id, tid,
wdg_timeout);
if (txq < 0) {
iwl_mvm_mld_rm_sta_from_fw(mvm, sta->sta_id);
return txq;
}
*queue = txq;
return 0;
}
/*
* Adds a new int sta: allocate it in the driver, add it to the FW table,
* and add its queues.
*/
static int iwl_mvm_mld_add_int_sta(struct iwl_mvm *mvm,
struct iwl_mvm_int_sta *int_sta, u16 *queue,
enum nl80211_iftype iftype,
enum iwl_fw_sta_type sta_type,
int link_id, const u8 *addr, u8 tid,
unsigned int *wdg_timeout)
{
int ret;
lockdep_assert_held(&mvm->mutex);
/* qmask argument is not used in the new tx api, send a don't care */
ret = iwl_mvm_allocate_int_sta(mvm, int_sta, 0, iftype,
sta_type);
if (ret)
return ret;
ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, int_sta, addr, link_id,
queue, tid, wdg_timeout);
if (ret) {
iwl_mvm_dealloc_int_sta(mvm, int_sta);
return ret;
}
return 0;
}
/* Allocate a new station entry for the broadcast station to the given vif,
* and send it to the FW.
* Note that each P2P mac should have its own broadcast station.
*/
int iwl_mvm_mld_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_vif_link_info *mvm_link =
mvmvif->link[link_conf->link_id];
struct iwl_mvm_int_sta *bsta = &mvm_link->bcast_sta;
static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
const u8 *baddr = _baddr;
unsigned int wdg_timeout =
iwl_mvm_get_wd_timeout(mvm, vif, false, false);
u16 *queue;
lockdep_assert_held(&mvm->mutex);
if (vif->type == NL80211_IFTYPE_ADHOC)
baddr = link_conf->bssid;
if (vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_ADHOC) {
queue = &mvm_link->mgmt_queue;
} else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
queue = &mvm->p2p_dev_queue;
} else {
WARN(1, "Missing required TXQ for adding bcast STA\n");
return -EINVAL;
}
return iwl_mvm_mld_add_int_sta(mvm, bsta, queue,
ieee80211_vif_type_p2p(vif),
STATION_TYPE_BCAST_MGMT,
mvm_link->fw_link_id, baddr,
IWL_MAX_TID_COUNT, &wdg_timeout);
}
/* Allocate a new station entry for the broadcast station to the given vif,
* and send it to the FW.
* Note that each AP/GO mac should have its own multicast station.
*/
int iwl_mvm_mld_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_vif_link_info *mvm_link =
mvmvif->link[link_conf->link_id];
struct iwl_mvm_int_sta *msta = &mvm_link->mcast_sta;
static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};
const u8 *maddr = _maddr;
unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false);
lockdep_assert_held(&mvm->mutex);
if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&
vif->type != NL80211_IFTYPE_ADHOC))
return -EOPNOTSUPP;
/* In IBSS, ieee80211_check_queues() sets the cab_queue to be
* invalid, so make sure we use the queue we want.
* Note that this is done here as we want to avoid making DQA
* changes in mac80211 layer.
*/
if (vif->type == NL80211_IFTYPE_ADHOC)
mvm_link->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
return iwl_mvm_mld_add_int_sta(mvm, msta, &mvm_link->cab_queue,
vif->type, STATION_TYPE_MCAST,
mvm_link->fw_link_id, maddr, 0,
&timeout);
}
/* Allocate a new station entry for the sniffer station to the given vif,
* and send it to the FW.
*/
int iwl_mvm_mld_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_vif_link_info *mvm_link =
mvmvif->link[link_conf->link_id];
lockdep_assert_held(&mvm->mutex);
return iwl_mvm_mld_add_int_sta(mvm, &mvm->snif_sta, &mvm->snif_queue,
vif->type, STATION_TYPE_BCAST_MGMT,
mvm_link->fw_link_id, NULL,
IWL_MAX_TID_COUNT, NULL);
}
int iwl_mvm_mld_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)
{
lockdep_assert_held(&mvm->mutex);
/* In CDB NICs we need to specify which lmac to use for aux activity;
* use the link_id argument place to send lmac_id to the function.
*/
return iwl_mvm_mld_add_int_sta(mvm, &mvm->aux_sta, &mvm->aux_queue,
NL80211_IFTYPE_UNSPECIFIED,
STATION_TYPE_AUX, lmac_id, NULL,
IWL_MAX_TID_COUNT, NULL);
}
static int iwl_mvm_mld_disable_txq(struct iwl_mvm *mvm, u32 sta_mask,
u16 *queueptr, u8 tid)
{
int queue = *queueptr;
int ret = 0;
if (tid == IWL_MAX_TID_COUNT)
tid = IWL_MGMT_TID;
if (mvm->sta_remove_requires_queue_remove) {
u32 cmd_id = WIDE_ID(DATA_PATH_GROUP,
SCD_QUEUE_CONFIG_CMD);
struct iwl_scd_queue_cfg_cmd remove_cmd = {
.operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE),
.u.remove.tid = cpu_to_le32(tid),
.u.remove.sta_mask = cpu_to_le32(sta_mask),
};
ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0,
sizeof(remove_cmd),
&remove_cmd);
}
iwl_trans_txq_free(mvm->trans, queue);
*queueptr = IWL_MVM_INVALID_QUEUE;
return ret;
}
/* Removes a sta from the FW table, disable its queues, and dealloc it
*/
static int iwl_mvm_mld_rm_int_sta(struct iwl_mvm *mvm,
struct iwl_mvm_int_sta *int_sta,
bool flush, u8 tid, u16 *queuptr)
{
int ret;
lockdep_assert_held(&mvm->mutex);
if (WARN_ON_ONCE(int_sta->sta_id == IWL_MVM_INVALID_STA))
return -EINVAL;
if (flush)
iwl_mvm_flush_sta(mvm, int_sta->sta_id, int_sta->tfd_queue_msk);
iwl_mvm_mld_disable_txq(mvm, BIT(int_sta->sta_id), queuptr, tid);
ret = iwl_mvm_mld_rm_sta_from_fw(mvm, int_sta->sta_id);
if (ret)
IWL_WARN(mvm, "Failed sending remove station\n");
iwl_mvm_dealloc_int_sta(mvm, int_sta);
return ret;
}
int iwl_mvm_mld_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_vif_link_info *link = mvmvif->link[link_conf->link_id];
u16 *queueptr;
lockdep_assert_held(&mvm->mutex);
if (WARN_ON(!link))
return -EIO;
switch (vif->type) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_ADHOC:
queueptr = &link->mgmt_queue;
break;
case NL80211_IFTYPE_P2P_DEVICE:
queueptr = &mvm->p2p_dev_queue;
break;
default:
WARN(1, "Can't free bcast queue on vif type %d\n",
vif->type);
return -EINVAL;
}
return iwl_mvm_mld_rm_int_sta(mvm, &link->bcast_sta,
true, IWL_MAX_TID_COUNT, queueptr);
}
/* Send the FW a request to remove the station from it's internal data
* structures, and in addition remove it from the local data structure.
*/
int iwl_mvm_mld_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_vif_link_info *link = mvmvif->link[link_conf->link_id];
lockdep_assert_held(&mvm->mutex);
if (WARN_ON(!link))
return -EIO;
return iwl_mvm_mld_rm_int_sta(mvm, &link->mcast_sta, true, 0,
&link->cab_queue);
}
int iwl_mvm_mld_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
lockdep_assert_held(&mvm->mutex);
return iwl_mvm_mld_rm_int_sta(mvm, &mvm->snif_sta, false,
IWL_MAX_TID_COUNT, &mvm->snif_queue);
}
int iwl_mvm_mld_rm_aux_sta(struct iwl_mvm *mvm)
{
lockdep_assert_held(&mvm->mutex);
return iwl_mvm_mld_rm_int_sta(mvm, &mvm->aux_sta, false,
IWL_MAX_TID_COUNT, &mvm->aux_queue);
}
/* send a cfg sta command to add/update a sta in firmware */
static int iwl_mvm_mld_cfg_sta(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
struct ieee80211_vif *vif,
struct ieee80211_link_sta *link_sta,
struct ieee80211_bss_conf *link_conf,
struct iwl_mvm_link_sta *mvm_link_sta)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_vif_link_info *link_info =
mvm_vif->link[link_conf->link_id];
struct iwl_mvm_sta_cfg_cmd cmd = {
.sta_id = cpu_to_le32(mvm_link_sta->sta_id),
.station_type = cpu_to_le32(mvm_sta->sta_type),
};
u32 agg_size = 0, mpdu_dens = 0;
/* when adding sta, link should exist in FW */
if (WARN_ON(link_info->fw_link_id == IWL_MVM_FW_LINK_ID_INVALID))
return -EINVAL;
cmd.link_id = cpu_to_le32(link_info->fw_link_id);
memcpy(&cmd.peer_mld_address, sta->addr, ETH_ALEN);
memcpy(&cmd.peer_link_address, link_sta->addr, ETH_ALEN);
if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC)
cmd.assoc_id = cpu_to_le32(sta->aid);
if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_STA_EXP_MFP_SUPPORT) &&
(sta->mfp || mvm_sta->sta_state < IEEE80211_STA_AUTHORIZED))
cmd.mfp = cpu_to_le32(1);
switch (link_sta->rx_nss) {
case 1:
cmd.mimo = cpu_to_le32(0);
break;
case 2 ... 8:
cmd.mimo = cpu_to_le32(1);
break;
}
switch (sta->deflink.smps_mode) {
case IEEE80211_SMPS_AUTOMATIC:
case IEEE80211_SMPS_NUM_MODES:
WARN_ON(1);
break;
case IEEE80211_SMPS_STATIC:
/* override NSS */
cmd.mimo = cpu_to_le32(0);
break;
case IEEE80211_SMPS_DYNAMIC:
cmd.mimo_protection = cpu_to_le32(1);
break;
case IEEE80211_SMPS_OFF:
/* nothing */
break;
}
mpdu_dens = iwl_mvm_get_sta_ampdu_dens(link_sta, link_conf, &agg_size);
cmd.tx_ampdu_spacing = cpu_to_le32(mpdu_dens);
cmd.tx_ampdu_max_size = cpu_to_le32(agg_size);
if (sta->wme) {
cmd.sp_length =
cpu_to_le32(sta->max_sp ? sta->max_sp * 2 : 128);
cmd.uapsd_acs = cpu_to_le32(iwl_mvm_get_sta_uapsd_acs(sta));
}
if (link_sta->he_cap.has_he) {
cmd.trig_rnd_alloc =
cpu_to_le32(link_conf->uora_exists ? 1 : 0);
/* PPE Thresholds */
iwl_mvm_set_sta_pkt_ext(mvm, link_sta, &cmd.pkt_ext);
/* HTC flags */
cmd.htc_flags = iwl_mvm_get_sta_htc_flags(sta, link_sta);
if (link_sta->he_cap.he_cap_elem.mac_cap_info[2] &
IEEE80211_HE_MAC_CAP2_ACK_EN)
cmd.ack_enabled = cpu_to_le32(1);
}
return iwl_mvm_mld_send_sta_cmd(mvm, &cmd);
}
static void iwl_mvm_mld_free_sta_link(struct iwl_mvm *mvm,
struct iwl_mvm_sta *mvm_sta,
struct iwl_mvm_link_sta *mvm_sta_link,
unsigned int link_id,
bool is_in_fw)
{
RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta_link->sta_id],
is_in_fw ? ERR_PTR(-EINVAL) : NULL);
RCU_INIT_POINTER(mvm->fw_id_to_link_sta[mvm_sta_link->sta_id], NULL);
RCU_INIT_POINTER(mvm_sta->link[link_id], NULL);
if (mvm_sta_link != &mvm_sta->deflink)
kfree_rcu(mvm_sta_link, rcu_head);
}
static void iwl_mvm_mld_sta_rm_all_sta_links(struct iwl_mvm *mvm,
struct iwl_mvm_sta *mvm_sta)
{
unsigned int link_id;
for (link_id = 0; link_id < ARRAY_SIZE(mvm_sta->link); link_id++) {
struct iwl_mvm_link_sta *link =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
if (!link)
continue;
iwl_mvm_mld_free_sta_link(mvm, mvm_sta, link, link_id, false);
}
}
static int iwl_mvm_mld_alloc_sta_link(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
unsigned int link_id)
{
struct ieee80211_link_sta *link_sta =
link_sta_dereference_protected(sta, link_id);
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_link_sta *link;
u32 sta_id = iwl_mvm_find_free_sta_id(mvm,
ieee80211_vif_type_p2p(vif));
if (sta_id == IWL_MVM_INVALID_STA)
return -ENOSPC;
if (rcu_access_pointer(sta->link[link_id]) == &sta->deflink) {
link = &mvm_sta->deflink;
} else {
link = kzalloc(sizeof(*link), GFP_KERNEL);
if (!link)
return -ENOMEM;
}
link->sta_id = sta_id;
rcu_assign_pointer(mvm_sta->link[link_id], link);
rcu_assign_pointer(mvm->fw_id_to_mac_id[link->sta_id], sta);
rcu_assign_pointer(mvm->fw_id_to_link_sta[link->sta_id],
link_sta);
return 0;
}
/* allocate all the links of a sta, called when the station is first added */
static int iwl_mvm_mld_alloc_sta_links(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
unsigned int link_id;
int ret;
lockdep_assert_held(&mvm->mutex);
for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) {
if (!rcu_access_pointer(sta->link[link_id]) ||
mvm_sta->link[link_id])
continue;
ret = iwl_mvm_mld_alloc_sta_link(mvm, vif, sta, link_id);
if (ret)
goto err;
}
return 0;
err:
iwl_mvm_mld_sta_rm_all_sta_links(mvm, mvm_sta);
return ret;
}
static void iwl_mvm_mld_set_ap_sta_id(struct ieee80211_sta *sta,
struct iwl_mvm_vif_link_info *vif_link,
struct iwl_mvm_link_sta *sta_link)
{
if (!sta->tdls) {
WARN_ON(vif_link->ap_sta_id != IWL_MVM_INVALID_STA);
vif_link->ap_sta_id = sta_link->sta_id;
} else {
WARN_ON(vif_link->ap_sta_id == IWL_MVM_INVALID_STA);
}
}
/* FIXME: consider waiting for mac80211 to add the STA instead of allocating
* queues here
*/
static int iwl_mvm_alloc_sta_after_restart(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct ieee80211_link_sta *link_sta;
unsigned int link_id;
/* no active link found */
int ret = -EINVAL;
int sta_id;
/* First add an empty station since allocating a queue requires
* a valid station. Since we need a link_id to allocate a station,
* pick up the first valid one.
*/
for_each_sta_active_link(vif, sta, link_sta, link_id) {
struct iwl_mvm_vif_link_info *mvm_link;
struct ieee80211_bss_conf *link_conf =
link_conf_dereference_protected(vif, link_id);
struct iwl_mvm_link_sta *mvm_link_sta =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
if (!link_conf)
continue;
mvm_link = mvmvif->link[link_conf->link_id];
if (!mvm_link || !mvm_link_sta)
continue;
sta_id = mvm_link_sta->sta_id;
ret = iwl_mvm_mld_cfg_sta(mvm, sta, vif, link_sta,
link_conf, mvm_link_sta);
if (ret)
return ret;
rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);
rcu_assign_pointer(mvm->fw_id_to_link_sta[sta_id], link_sta);
ret = 0;
}
iwl_mvm_realloc_queues_after_restart(mvm, sta);
return ret;
}
int iwl_mvm_mld_add_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
unsigned long link_sta_added_to_fw = 0;
struct ieee80211_link_sta *link_sta;
int ret = 0;
unsigned int link_id;
lockdep_assert_held(&mvm->mutex);
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
ret = iwl_mvm_mld_alloc_sta_links(mvm, vif, sta);
if (ret)
return ret;
spin_lock_init(&mvm_sta->lock);
ret = iwl_mvm_sta_init(mvm, vif, sta, IWL_MVM_INVALID_STA,
STATION_TYPE_PEER);
} else {
ret = iwl_mvm_alloc_sta_after_restart(mvm, vif, sta);
}
if (ret)
goto err;
/* at this stage sta link pointers are already allocated */
ret = iwl_mvm_mld_update_sta(mvm, vif, sta);
if (ret)
goto err;
for_each_sta_active_link(vif, sta, link_sta, link_id) {
struct ieee80211_bss_conf *link_conf =
link_conf_dereference_protected(vif, link_id);
struct iwl_mvm_link_sta *mvm_link_sta =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
if (WARN_ON(!link_conf || !mvm_link_sta)) {
ret = -EINVAL;
goto err;
}
ret = iwl_mvm_mld_cfg_sta(mvm, sta, vif, link_sta, link_conf,
mvm_link_sta);
if (ret)
goto err;
link_sta_added_to_fw |= BIT(link_id);
if (vif->type == NL80211_IFTYPE_STATION)
iwl_mvm_mld_set_ap_sta_id(sta, mvm_vif->link[link_id],
mvm_link_sta);
}
return 0;
err:
/* remove all already allocated stations in FW */
for_each_set_bit(link_id, &link_sta_added_to_fw,
IEEE80211_MLD_MAX_NUM_LINKS) {
struct iwl_mvm_link_sta *mvm_link_sta =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
iwl_mvm_mld_rm_sta_from_fw(mvm, mvm_link_sta->sta_id);
}
/* free all sta resources in the driver */
iwl_mvm_mld_sta_rm_all_sta_links(mvm, mvm_sta);
return ret;
}
int iwl_mvm_mld_update_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct ieee80211_link_sta *link_sta;
unsigned int link_id;
int ret = -EINVAL;
lockdep_assert_held(&mvm->mutex);
for_each_sta_active_link(vif, sta, link_sta, link_id) {
struct ieee80211_bss_conf *link_conf =
link_conf_dereference_protected(vif, link_id);
struct iwl_mvm_link_sta *mvm_link_sta =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
if (WARN_ON(!link_conf || !mvm_link_sta))
return -EINVAL;
ret = iwl_mvm_mld_cfg_sta(mvm, sta, vif, link_sta, link_conf,
mvm_link_sta);
if (ret) {
IWL_ERR(mvm, "Failed to update sta link %d\n", link_id);
break;
}
}
return ret;
}
static void iwl_mvm_mld_disable_sta_queues(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
u32 sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);
int i;
lockdep_assert_held(&mvm->mutex);
for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {
if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)
continue;
iwl_mvm_mld_disable_txq(mvm, sta_mask,
&mvm_sta->tid_data[i].txq_id, i);
mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;
}
for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
struct iwl_mvm_txq *mvmtxq =
iwl_mvm_txq_from_mac80211(sta->txq[i]);
mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;
}
}
int iwl_mvm_mld_rm_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct ieee80211_link_sta *link_sta;
unsigned int link_id;
int ret;
lockdep_assert_held(&mvm->mutex);
/* flush its queues here since we are freeing mvm_sta */
for_each_sta_active_link(vif, sta, link_sta, link_id) {
struct iwl_mvm_link_sta *mvm_link_sta =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
if (WARN_ON(!mvm_link_sta))
return -EINVAL;
ret = iwl_mvm_flush_sta_tids(mvm, mvm_link_sta->sta_id,
0xffff);
if (ret)
return ret;
}
ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);
if (ret)
return ret;
iwl_mvm_mld_disable_sta_queues(mvm, vif, sta);
for_each_sta_active_link(vif, sta, link_sta, link_id) {
struct iwl_mvm_link_sta *mvm_link_sta =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
bool stay_in_fw;
stay_in_fw = iwl_mvm_sta_del(mvm, vif, sta, link_sta, &ret);
if (ret)
break;
if (!stay_in_fw)
ret = iwl_mvm_mld_rm_sta_from_fw(mvm,
mvm_link_sta->sta_id);
iwl_mvm_mld_free_sta_link(mvm, mvm_sta, mvm_link_sta,
link_id, stay_in_fw);
}
return ret;
}
int iwl_mvm_mld_rm_sta_id(struct iwl_mvm *mvm, u8 sta_id)
{
int ret;
lockdep_assert_held(&mvm->mutex);
if (WARN_ON(sta_id == IWL_MVM_INVALID_STA))
return 0;
ret = iwl_mvm_mld_rm_sta_from_fw(mvm, sta_id);
RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);
RCU_INIT_POINTER(mvm->fw_id_to_link_sta[sta_id], NULL);
return ret;
}
void iwl_mvm_mld_sta_modify_disable_tx(struct iwl_mvm *mvm,
struct iwl_mvm_sta *mvmsta,
bool disable)
{
struct iwl_mvm_sta_disable_tx_cmd cmd;
int ret;
cmd.sta_id = cpu_to_le32(mvmsta->deflink.sta_id);
cmd.disable = cpu_to_le32(disable);
if (WARN_ON(iwl_mvm_has_no_host_disable_tx(mvm)))
return;
ret = iwl_mvm_send_cmd_pdu(mvm,
WIDE_ID(MAC_CONF_GROUP, STA_DISABLE_TX_CMD),
CMD_ASYNC, sizeof(cmd), &cmd);
if (ret)
IWL_ERR(mvm,
"Failed to send STA_DISABLE_TX_CMD command (%d)\n",
ret);
}
void iwl_mvm_mld_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
bool disable)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
spin_lock_bh(&mvm_sta->lock);
if (mvm_sta->disable_tx == disable) {
spin_unlock_bh(&mvm_sta->lock);
return;
}
iwl_mvm_mld_sta_modify_disable_tx(mvm, mvm_sta, disable);
spin_unlock_bh(&mvm_sta->lock);
}
void iwl_mvm_mld_modify_all_sta_disable_tx(struct iwl_mvm *mvm,
struct iwl_mvm_vif *mvmvif,
bool disable)
{
struct ieee80211_sta *sta;
struct iwl_mvm_sta *mvm_sta;
int i;
rcu_read_lock();
/* Block/unblock all the stations of the given mvmvif */
for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);
if (IS_ERR_OR_NULL(sta))
continue;
mvm_sta = iwl_mvm_sta_from_mac80211(sta);
if (mvm_sta->mac_id_n_color !=
FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))
continue;
iwl_mvm_mld_sta_modify_disable_tx(mvm, mvm_sta, disable);
}
rcu_read_unlock();
}
static int iwl_mvm_mld_update_sta_queues(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
u32 old_sta_mask,
u32 new_sta_mask)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_scd_queue_cfg_cmd cmd = {
.operation = cpu_to_le32(IWL_SCD_QUEUE_MODIFY),
.u.modify.old_sta_mask = cpu_to_le32(old_sta_mask),
.u.modify.new_sta_mask = cpu_to_le32(new_sta_mask),
};
struct iwl_host_cmd hcmd = {
.id = WIDE_ID(DATA_PATH_GROUP, SCD_QUEUE_CONFIG_CMD),
.len[0] = sizeof(cmd),
.data[0] = &cmd
};
int tid;
int ret;
lockdep_assert_held(&mvm->mutex);
for (tid = 0; tid <= IWL_MAX_TID_COUNT; tid++) {
struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[tid];
int txq_id = tid_data->txq_id;
if (txq_id == IWL_MVM_INVALID_QUEUE)
continue;
if (tid == IWL_MAX_TID_COUNT)
cmd.u.modify.tid = cpu_to_le32(IWL_MGMT_TID);
else
cmd.u.modify.tid = cpu_to_le32(tid);
ret = iwl_mvm_send_cmd(mvm, &hcmd);
if (ret)
return ret;
}
return 0;
}
static int iwl_mvm_mld_update_sta_baids(struct iwl_mvm *mvm,
u32 old_sta_mask,
u32 new_sta_mask)
{
struct iwl_rx_baid_cfg_cmd cmd = {
.action = cpu_to_le32(IWL_RX_BAID_ACTION_MODIFY),
.modify.old_sta_id_mask = cpu_to_le32(old_sta_mask),
.modify.new_sta_id_mask = cpu_to_le32(new_sta_mask),
};
u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD);
int baid;
BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));
for (baid = 0; baid < ARRAY_SIZE(mvm->baid_map); baid++) {
struct iwl_mvm_baid_data *data;
int ret;
data = rcu_dereference_protected(mvm->baid_map[baid],
lockdep_is_held(&mvm->mutex));
if (!data)
continue;
if (!(data->sta_mask & old_sta_mask))
continue;
WARN_ONCE(data->sta_mask != old_sta_mask,
"BAID data for %d corrupted - expected 0x%x found 0x%x\n",
baid, old_sta_mask, data->sta_mask);
cmd.modify.tid = cpu_to_le32(data->tid);
ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, sizeof(cmd), &cmd);
data->sta_mask = new_sta_mask;
if (ret)
return ret;
}
return 0;
}
static int iwl_mvm_mld_update_sta_resources(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
u32 old_sta_mask,
u32 new_sta_mask)
{
int ret;
ret = iwl_mvm_mld_update_sta_queues(mvm, sta,
old_sta_mask,
new_sta_mask);
if (ret)
return ret;
ret = iwl_mvm_mld_update_sta_keys(mvm, vif, sta,
old_sta_mask,
new_sta_mask);
if (ret)
return ret;
return iwl_mvm_mld_update_sta_baids(mvm, old_sta_mask, new_sta_mask);
}
int iwl_mvm_mld_update_sta_links(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
u16 old_links, u16 new_links)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_link_sta *mvm_sta_link;
struct iwl_mvm_vif_link_info *mvm_vif_link;
unsigned long links_to_add = ~old_links & new_links;
unsigned long links_to_rem = old_links & ~new_links;
unsigned long old_links_long = old_links;
u32 current_sta_mask = 0, sta_mask_added = 0, sta_mask_to_rem = 0;
unsigned long link_sta_added_to_fw = 0, link_sta_allocated = 0;
unsigned int link_id;
int ret;
lockdep_assert_held(&mvm->mutex);
for_each_set_bit(link_id, &old_links_long,
IEEE80211_MLD_MAX_NUM_LINKS) {
mvm_sta_link =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
if (WARN_ON(!mvm_sta_link)) {
ret = -EINVAL;
goto err;
}
current_sta_mask |= BIT(mvm_sta_link->sta_id);
if (links_to_rem & BIT(link_id))
sta_mask_to_rem |= BIT(mvm_sta_link->sta_id);
}
if (sta_mask_to_rem) {
ret = iwl_mvm_mld_update_sta_resources(mvm, vif, sta,
current_sta_mask,
current_sta_mask &
~sta_mask_to_rem);
if (WARN_ON(ret))
goto err;
current_sta_mask &= ~sta_mask_to_rem;
}
for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) {
mvm_sta_link =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
mvm_vif_link = mvm_vif->link[link_id];
if (WARN_ON(!mvm_sta_link || !mvm_vif_link)) {
ret = -EINVAL;
goto err;
}
ret = iwl_mvm_mld_rm_sta_from_fw(mvm, mvm_sta_link->sta_id);
if (WARN_ON(ret))
goto err;
if (vif->type == NL80211_IFTYPE_STATION)
mvm_vif_link->ap_sta_id = IWL_MVM_INVALID_STA;
iwl_mvm_mld_free_sta_link(mvm, mvm_sta, mvm_sta_link, link_id,
false);
}
for_each_set_bit(link_id, &links_to_add, IEEE80211_MLD_MAX_NUM_LINKS) {
struct ieee80211_bss_conf *link_conf =
link_conf_dereference_protected(vif, link_id);
struct ieee80211_link_sta *link_sta =
link_sta_dereference_protected(sta, link_id);
mvm_vif_link = mvm_vif->link[link_id];
if (WARN_ON(!mvm_vif_link || !link_conf || !link_sta)) {
ret = -EINVAL;
goto err;
}
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
if (WARN_ON(!mvm_sta->link[link_id])) {
ret = -EINVAL;
goto err;
}
} else {
if (WARN_ON(mvm_sta->link[link_id])) {
ret = -EINVAL;
goto err;
}
ret = iwl_mvm_mld_alloc_sta_link(mvm, vif, sta,
link_id);
if (WARN_ON(ret))
goto err;
}
link_sta->agg.max_rc_amsdu_len = 1;
ieee80211_sta_recalc_aggregates(sta);
mvm_sta_link =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
if (WARN_ON(!mvm_sta_link)) {
ret = -EINVAL;
goto err;
}
if (vif->type == NL80211_IFTYPE_STATION)
iwl_mvm_mld_set_ap_sta_id(sta, mvm_vif_link,
mvm_sta_link);
link_sta_allocated |= BIT(link_id);
sta_mask_added |= BIT(mvm_sta_link->sta_id);
ret = iwl_mvm_mld_cfg_sta(mvm, sta, vif, link_sta, link_conf,
mvm_sta_link);
if (WARN_ON(ret))
goto err;
link_sta_added_to_fw |= BIT(link_id);
iwl_mvm_rs_add_sta_link(mvm, mvm_sta_link);
}
if (sta_mask_added) {
ret = iwl_mvm_mld_update_sta_resources(mvm, vif, sta,
current_sta_mask,
current_sta_mask |
sta_mask_added);
if (WARN_ON(ret))
goto err;
}
return 0;
err:
/* remove all already allocated stations in FW */
for_each_set_bit(link_id, &link_sta_added_to_fw,
IEEE80211_MLD_MAX_NUM_LINKS) {
mvm_sta_link =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
iwl_mvm_mld_rm_sta_from_fw(mvm, mvm_sta_link->sta_id);
}
/* remove all already allocated station links in driver */
for_each_set_bit(link_id, &link_sta_allocated,
IEEE80211_MLD_MAX_NUM_LINKS) {
mvm_sta_link =
rcu_dereference_protected(mvm_sta->link[link_id],
lockdep_is_held(&mvm->mutex));
iwl_mvm_mld_free_sta_link(mvm, mvm_sta, mvm_sta_link, link_id,
false);
}
return ret;
}
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