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fuchsia / drivers / wlan / intel / iwlwifi / e14bff8f02c9b2bd8c5514affe995ee678cf1c24 / . / third_party / iwlwifi / mvm / mac-ctxt.c
blob: 528bcfde376cbb8c0c61e4573257fa0cdf5840c5 [file] [log] [blame]
/******************************************************************************
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
* Copyright(c) 2015 - 2017 Intel Deutschland GmbH
* Copyright(c) 2018 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
#include "third_party/iwlwifi/iwl-io.h"
#include "third_party/iwlwifi/iwl-prph.h"
#include "third_party/iwlwifi/mvm/fw-api.h"
#include "third_party/iwlwifi/mvm/mvm.h"
#include "third_party/iwlwifi/mvm/time-event.h"
#include "third_party/iwlwifi/platform/rcu.h"
const uint8_t iwl_mvm_ac_to_tx_fifo[] = {
IWL_MVM_TX_FIFO_VO,
IWL_MVM_TX_FIFO_VI,
IWL_MVM_TX_FIFO_BE,
IWL_MVM_TX_FIFO_BK,
};
const uint8_t iwl_mvm_ac_to_gen2_tx_fifo[] = {
IWL_GEN2_EDCA_TX_FIFO_VO, IWL_GEN2_EDCA_TX_FIFO_VI, IWL_GEN2_EDCA_TX_FIFO_BE,
IWL_GEN2_EDCA_TX_FIFO_BK, IWL_GEN2_TRIG_TX_FIFO_VO, IWL_GEN2_TRIG_TX_FIFO_VI,
IWL_GEN2_TRIG_TX_FIFO_BE, IWL_GEN2_TRIG_TX_FIFO_BK,
};
struct iwl_mvm_mac_iface_iterator_data {
struct iwl_mvm* mvm;
struct iwl_mvm_vif* mvmvif;
unsigned available_mac_ids[BITS_TO_INTS(NUM_MAC_INDEX_DRIVER)];
unsigned available_tsf_ids[BITS_TO_INTS(NUM_TSF_IDS)];
enum iwl_tsf_id preferred_tsf;
bool found_vif;
};
#if 0 // NEEDS_PORTING
static void iwl_mvm_mac_tsf_id_iter(void* _data, uint8_t* mac, struct ieee80211_vif* vif) {
struct iwl_mvm_mac_iface_iterator_data* data = _data;
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
uint16_t min_bi;
/* Skip the interface for which we are trying to assign a tsf_id */
if (vif == data->vif) {
return;
}
/*
* The TSF is a hardware/firmware resource, there are 4 and
* the driver should assign and free them as needed. However,
* there are cases where 2 MACs should share the same TSF ID
* for the purpose of clock sync, an optimization to avoid
* clock drift causing overlapping TBTTs/DTIMs for a GO and
* client in the system.
*
* The firmware will decide according to the MAC type which
* will be the master and slave. Clients that need to sync
* with a remote station will be the master, and an AP or GO
* will be the slave.
*
* Depending on the new interface type it can be slaved to
* or become the master of an existing interface.
*/
switch (data->vif->type) {
case NL80211_IFTYPE_STATION:
/*
* The new interface is a client, so if the one we're iterating
* is an AP, and the beacon interval of the AP is a multiple or
* divisor of the beacon interval of the client, the same TSF
* should be used to avoid drift between the new client and
* existing AP. The existing AP will get drift updates from the
* new client context in this case.
*/
if (vif->type != NL80211_IFTYPE_AP || data->preferred_tsf != NUM_TSF_IDS ||
!test_bit(mvmvif->tsf_id, data->available_tsf_ids)) {
break;
}
min_bi = min(data->vif->bss_conf.beacon_int, vif->bss_conf.beacon_int);
if (!min_bi) {
break;
}
if ((data->vif->bss_conf.beacon_int - vif->bss_conf.beacon_int) % min_bi == 0) {
data->preferred_tsf = mvmvif->tsf_id;
return;
}
break;
case NL80211_IFTYPE_AP:
/*
* The new interface is AP/GO, so if its beacon interval is a
* multiple or a divisor of the beacon interval of an existing
* interface, it should get drift updates from an existing
* client or use the same TSF as an existing GO. There's no
* drift between TSFs internally but if they used different
* TSFs then a new client MAC could update one of them and
* cause drift that way.
*/
if ((vif->type != NL80211_IFTYPE_AP && vif->type != NL80211_IFTYPE_STATION) ||
data->preferred_tsf != NUM_TSF_IDS ||
!test_bit(mvmvif->tsf_id, data->available_tsf_ids)) {
break;
}
min_bi = min(data->vif->bss_conf.beacon_int, vif->bss_conf.beacon_int);
if (!min_bi) {
break;
}
if ((data->vif->bss_conf.beacon_int - vif->bss_conf.beacon_int) % min_bi == 0) {
data->preferred_tsf = mvmvif->tsf_id;
return;
}
break;
default:
/*
* For all other interface types there's no need to
* take drift into account. Either they're exclusive
* like IBSS and monitor, or we don't care much about
* their TSF (like P2P Device), but we won't be able
* to share the TSF resource.
*/
break;
}
/*
* Unless we exited above, we can't share the TSF resource
* that the virtual interface we're iterating over is using
* with the new one, so clear the available bit and if this
* was the preferred one, reset that as well.
*/
__clear_bit(mvmvif->tsf_id, data->available_tsf_ids);
if (data->preferred_tsf == mvmvif->tsf_id) {
data->preferred_tsf = NUM_TSF_IDS;
}
}
static void iwl_mvm_mac_iface_iterator(void* _data, uint8_t* mac, struct ieee80211_vif* vif) {
struct iwl_mvm_mac_iface_iterator_data* data = _data;
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
/* Iterator may already find the interface being added -- skip it */
if (vif == data->vif) {
data->found_vif = true;
return;
}
/* Mark MAC IDs as used by clearing the available bit, and
* (below) mark TSFs as used if their existing use is not
* compatible with the new interface type.
* No locking or atomic bit operations are needed since the
* data is on the stack of the caller function.
*/
__clear_bit(mvmvif->id, data->available_mac_ids);
/* find a suitable tsf_id */
iwl_mvm_mac_tsf_id_iter(_data, mac, vif);
}
void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm* mvm, struct ieee80211_vif* vif) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_mac_iface_iterator_data data = {
.mvm = mvm,
.vif = vif,
.available_tsf_ids = {(1 << NUM_TSF_IDS) - 1},
/* no preference yet */
.preferred_tsf = NUM_TSF_IDS,
};
ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
iwl_mvm_mac_tsf_id_iter, &data);
if (data.preferred_tsf != NUM_TSF_IDS) {
mvmvif->tsf_id = data.preferred_tsf;
} else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) {
mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, NUM_TSF_IDS);
}
}
#endif // NEEDS_PORTING
zx_status_t iwl_mvm_mac_ctxt_init(struct iwl_mvm_vif* mvmvif) {
struct iwl_mvm* mvm = mvmvif->mvm;
struct iwl_mvm_mac_iface_iterator_data data = {
.mvm = mvm,
.mvmvif = mvmvif,
.available_mac_ids = {(1 << NUM_MAC_INDEX_DRIVER) - 1}, // 1 means available
.available_tsf_ids = {(1 << NUM_TSF_IDS) - 1}, // 1 means available
/* no preference yet */
.preferred_tsf = NUM_TSF_IDS,
.found_vif = false,
};
zx_status_t ret;
#if 0 // NEEDS_PORTING
unsigned long used_hw_queues;
#endif // NEEDS_PORTING
iwl_assert_lock_held(&mvm->mutex);
#if 0 // NEEDS_PORTING
// TODO(43218): Support multiple interfaces simultaneously.
// The current code doesn't clear bits so that always use the first interface.
/*
* Allocate a MAC ID and a TSF for this MAC, along with the queues
* and other resources.
*/
/*
* Before the iterator, we start with all MAC IDs and TSFs available.
*
* During iteration, all MAC IDs are cleared that are in use by other
* virtual interfaces, and all TSF IDs are cleared that can't be used
* by this new virtual interface because they're used by an interface
* that can't share it with the new one.
* At the same time, we check if there's a preferred TSF in the case
* that we should share it with another interface.
*/
/* Currently, MAC ID 0 should be used only for the managed/IBSS vif */
switch (vif->type) {
case NL80211_IFTYPE_ADHOC:
break;
case NL80211_IFTYPE_STATION:
if (!vif->p2p) {
break;
}
/* fall through */
default:
__clear_bit(0, data.available_mac_ids);
}
ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
iwl_mvm_mac_iface_iterator, &data);
#endif // NEEDS_PORTING
/*
* In the case we're getting here during resume, it's similar to
* firmware restart, and with RESUME_ALL the iterator will find
* the vif being added already.
* We don't want to reassign any IDs in either case since doing
* so would probably assign different IDs (as interfaces aren't
* necessarily added in the same order), but the old IDs were
* preserved anyway, so skip ID assignment for both resume and
* recovery.
*/
if (data.found_vif) {
return ZX_OK;
}
/* Therefore, in recovery, we can't get here */
if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) {
return ZX_ERR_BAD_STATE;
}
mvmvif->id = find_first_bit(data.available_mac_ids, NUM_MAC_INDEX_DRIVER);
if (mvmvif->id == NUM_MAC_INDEX_DRIVER) {
IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n");
ret = ZX_ERR_IO;
goto exit_fail;
}
if (data.preferred_tsf != NUM_TSF_IDS) {
mvmvif->tsf_id = data.preferred_tsf;
} else {
mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, NUM_TSF_IDS);
}
if (mvmvif->tsf_id == NUM_TSF_IDS) {
IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n");
ret = ZX_ERR_IO;
goto exit_fail;
}
mvmvif->color = 0;
list_initialize(&mvmvif->time_event_data.list);
mvmvif->time_event_data.id = TE_MAX;
#if 0 // NEEDS_PORTING
/* No need to allocate data queues to P2P Device MAC and NAN.*/
if (vif->type == NL80211_IFTYPE_P2P_DEVICE || vif->type == NL80211_IFTYPE_NAN) {
for (ac = 0; ac < IEEE80211_AC_MAX; ac++) {
vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE;
}
return 0;
}
/*
* queues in mac80211 almost entirely independent of
* the ones here - no real limit
*/
int queue_limit = IEEE80211_MAX_QUEUES;
/*
* Find available queues, and allocate them to the ACs. When in
* DQA-mode they aren't really used, and this is done only so the
* mac80211 ieee80211_check_queues() function won't fail
*/
uint32_t ac;
for (ac = 0; ac < IEEE80211_AC_MAX; ac++) {
uint8_t queue = find_first_zero_bit(&used_hw_queues, queue_limit);
if (queue >= queue_limit) {
IWL_ERR(mvm, "Failed to allocate queue\n");
ret = ZX_ERR_IO;
goto exit_fail;
}
__set_bit(queue, &used_hw_queues);
vif->hw_queue[ac] = queue;
}
/* Allocate the CAB queue for softAP and GO interfaces */
if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC) {
/*
* For TVQM this will be overwritten later with the FW assigned
* queue value (when queue is enabled).
*/
mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE;
}
#endif // NEEDS_PORTING
mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA;
mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA;
mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
for (int i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC;
}
return ZX_OK;
exit_fail:
memset(mvmvif, 0, sizeof(struct iwl_mvm_vif));
return ret;
}
static void iwl_mvm_ack_rates(struct iwl_mvm_vif* mvmvif, wlan_info_band_t band, uint8_t* cck_rates,
uint8_t* ofdm_rates) {
// Since the 'iwl_cfg80211_rates' table is fixed, seems we can always return fixed values.
*cck_rates = 0xf; // 1 Mbps, 2 Mbps, 5.5 Mbps, 11 Mbps
*ofdm_rates = 0xff; // 6 Mbps, 9 Mbps, 12 Mbps, 18 Mbps, 24 Mbps, 36 Mbps, 48 Mbps, 54 Mbps
#if 0 // NEEDS_PORTING
// TODO(43217): come back and review if we need the following code.
struct ieee80211_supported_band* sband;
unsigned long basic = vif->bss_conf.basic_rates;
int lowest_present_ofdm = 100;
int lowest_present_cck = 100;
uint8_t cck = 0;
uint8_t ofdm = 0;
int i;
sband = mvm->hw->wiphy->bands[band];
for_each_set_bit(i, &basic, BITS_PER_LONG) {
int hw = sband->bitrates[i].hw_value;
if (hw >= IWL_FIRST_OFDM_RATE) {
ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE);
if (lowest_present_ofdm > hw) {
lowest_present_ofdm = hw;
}
} else {
BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
cck |= BIT(hw);
if (lowest_present_cck > hw) {
lowest_present_cck = hw;
}
}
}
/*
* Now we've got the basic rates as bitmaps in the ofdm and cck
* variables. This isn't sufficient though, as there might not
* be all the right rates in the bitmap. E.g. if the only basic
* rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps
* and 6 Mbps because the 802.11-2007 standard says in 9.6:
*
* [...] a STA responding to a received frame shall transmit
* its Control Response frame [...] at the highest rate in the
* BSSBasicRateSet parameter that is less than or equal to the
* rate of the immediately previous frame in the frame exchange
* sequence ([...]) and that is of the same modulation class
* ([...]) as the received frame. If no rate contained in the
* BSSBasicRateSet parameter meets these conditions, then the
* control frame sent in response to a received frame shall be
* transmitted at the highest mandatory rate of the PHY that is
* less than or equal to the rate of the received frame, and
* that is of the same modulation class as the received frame.
*
* As a consequence, we need to add all mandatory rates that are
* lower than all of the basic rates to these bitmaps.
*/
if (IWL_RATE_24M_INDEX < lowest_present_ofdm) {
ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE;
}
if (IWL_RATE_12M_INDEX < lowest_present_ofdm) {
ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE;
}
/* 6M already there or needed so always add */
ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE;
/*
* CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP.
* Note, however:
* - if no CCK rates are basic, it must be ERP since there must
* be some basic rates at all, so they're OFDM => ERP PHY
* (or we're in 5 GHz, and the cck bitmap will never be used)
* - if 11M is a basic rate, it must be ERP as well, so add 5.5M
* - if 5.5M is basic, 1M and 2M are mandatory
* - if 2M is basic, 1M is mandatory
* - if 1M is basic, that's the only valid ACK rate.
* As a consequence, it's not as complicated as it sounds, just add
* any lower rates to the ACK rate bitmap.
*/
if (IWL_RATE_11M_INDEX < lowest_present_cck) {
cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE;
}
if (IWL_RATE_5M_INDEX < lowest_present_cck) {
cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE;
}
if (IWL_RATE_2M_INDEX < lowest_present_cck) {
cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE;
}
/* 1M already there or needed so always add */
cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE;
*cck_rates = cck;
*ofdm_rates = ofdm;
#endif // NEEDS_PORTING
}
static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm_vif* mvmvif, struct iwl_mac_ctx_cmd* cmd) {
// Use conservative value for better compatibility.
// TODO(43248): optimize this.
cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT);
#if 0 // NEEDS_PORTING
/* for both sta and ap, ht_operation_mode hold the protection_mode */
uint8_t protection_mode = vif->bss_conf.ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
/* The fw does not distinguish between ht and fat */
uint32_t ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT;
IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode);
/*
* See section 9.23.3.1 of IEEE 80211-2012.
* Nongreenfield HT STAs Present is not supported.
*/
switch (protection_mode) {
case IEEE80211_HT_OP_MODE_PROTECTION_NONE:
break;
case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
cmd->protection_flags |= cpu_to_le32(ht_flag);
break;
case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
/* Protect when channel wider than 20MHz */
if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) {
cmd->protection_flags |= cpu_to_le32(ht_flag);
}
break;
default:
IWL_ERR(mvm, "Illegal protection mode %d\n", protection_mode);
break;
}
#endif // NEEDS_PORTING
}
static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm_vif* mvmvif, wlan_info_band_t band,
bool ht_enabled, struct iwl_mac_ctx_cmd* cmd,
const uint8_t* bssid_override, uint32_t action) {
struct iwl_mvm* mvm = mvmvif->mvm;
uint8_t cck_ack_rates, ofdm_ack_rates;
const uint8_t* bssid = bssid_override ?: mvmvif->bss_conf.bssid;
cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
cmd->action = cpu_to_le32(action);
switch (mvmvif->mac_role) {
case WLAN_MAC_ROLE_CLIENT:
cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA);
break;
case WLAN_MAC_ROLE_AP:
cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO);
break;
#if 0 // NEEDS_PORTING
case NL80211_IFTYPE_MONITOR:
cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER);
break;
case NL80211_IFTYPE_P2P_DEVICE:
cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE);
break;
case NL80211_IFTYPE_ADHOC:
cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS);
break;
#endif // NEEDS_PORTING
default:
IWL_ERR(mvm, "%s(): unknown mvmvif->mac_role: %d\n", __func__, mvmvif->mac_role);
}
cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id);
memcpy(cmd->node_addr, mvmvif->addr, ETH_ALEN);
if (bssid) {
memcpy(cmd->bssid_addr, bssid, ETH_ALEN);
} else {
eth_broadcast_addr(cmd->bssid_addr);
}
iwl_rcu_read_lock(mvm->dev);
iwl_mvm_ack_rates(mvmvif, band, &cck_ack_rates, &ofdm_ack_rates);
iwl_rcu_read_unlock(mvm->dev);
cmd->cck_rates = cpu_to_le32((uint32_t)cck_ack_rates);
cmd->ofdm_rates = cpu_to_le32((uint32_t)ofdm_ack_rates);
cmd->cck_short_preamble =
cpu_to_le32(mvmvif->bss_conf.use_short_preamble ? MAC_FLG_SHORT_PREAMBLE : 0);
cmd->short_slot = cpu_to_le32(mvmvif->bss_conf.use_short_slot ? MAC_FLG_SHORT_SLOT : 0);
cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP);
for (uint32_t i = 0; i < IEEE80211_AC_MAX; i++) {
uint8_t txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i);
cmd->ac[txf].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min);
cmd->ac[txf].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max);
cmd->ac[txf].edca_txop = cpu_to_le16(mvmvif->queue_params[i].txop * 32);
cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs;
cmd->ac[txf].fifos_mask = BIT(txf);
}
if (mvmvif->bss_conf.qos) {
cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA);
}
if (mvmvif->bss_conf.use_cts_prot) {
cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT);
}
IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", mvmvif->bss_conf.use_cts_prot,
mvmvif->bss_conf.ht_operation_mode);
if (mvmvif->bss_conf.chandef.cbw != CHANNEL_BANDWIDTH_CBW20) {
cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN);
}
if (ht_enabled) {
iwl_mvm_mac_ctxt_set_ht_flags(mvmvif, cmd);
}
}
static zx_status_t iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm* mvm, struct iwl_mac_ctx_cmd* cmd) {
zx_status_t ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, sizeof(*cmd), cmd);
if (ret) {
IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", le32_to_cpu(cmd->action), ret);
}
return ret;
}
static zx_status_t iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm_vif* mvmvif, uint32_t action,
bool force_assoc_off, const uint8_t* bssid_override) {
struct iwl_mvm* mvm = mvmvif->mvm;
struct iwl_mac_ctx_cmd cmd = {};
struct iwl_mac_data_sta* ctxt_sta;
WARN_ON(mvmvif->mac_role != WLAN_MAC_ROLE_CLIENT);
/* Fill the common data for all mac context types */
iwl_mvm_mac_ctxt_cmd_common(mvmvif, WLAN_INFO_BAND_TWO_GHZ, // Use default value.
mvmvif->ht_enabled, &cmd, bssid_override, action);
#if 1 // NEEDS_PORTING
// When it is not in associated state, filter in the beacon packets.
if (!mvmvif->bss_conf.assoc) {
cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
}
ctxt_sta = &cmd.sta;
ctxt_sta->is_assoc = cpu_to_le32(mvmvif->bss_conf.assoc);
ctxt_sta->bi = cpu_to_le32(mvmvif->bss_conf.beacon_int);
ctxt_sta->dtim_interval = cpu_to_le32(mvmvif->bss_conf.beacon_int * mvmvif->bss_conf.dtim_period);
ctxt_sta->listen_interval = cpu_to_le32(mvmvif->bss_conf.listen_interval);
ctxt_sta->assoc_id = cpu_to_le32(0); // Associate ID is always 0 in STA role.
#else // NEEDS_PORTING
if (vif->p2p) {
struct ieee80211_p2p_noa_attr* noa = &vif->bss_conf.p2p_noa_attr;
#ifdef CPTCFG_IWLMVM_P2P_OPPPS_TEST_WA
/*
* Pass CT window including OPPPS enable flag as part of a WA
* to pass P2P OPPPS certification test. Refer to
* IWLMVM_P2P_OPPPS_TEST_WA description in Kconfig.noupstream.
*/
if (mvm->p2p_opps_test_wa_vif) {
cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow);
} else
#endif
cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
ctxt_sta = &cmd.p2p_sta.sta;
} else {
ctxt_sta = &cmd.sta;
}
/* We need the dtim_period to set the MAC as associated */
if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && !force_assoc_off) {
uint32_t dtim_offs;
/*
* The DTIM count counts down, so when it is N that means N
* more beacon intervals happen until the DTIM TBTT. Therefore
* add this to the current time. If that ends up being in the
* future, the firmware will handle it.
*
* Also note that the system_timestamp (which we get here as
* "sync_device_ts") and TSF timestamp aren't at exactly the
* same offset in the frame -- the TSF is at the first symbol
* of the TSF, the system timestamp is at signal acquisition
* time. This means there's an offset between them of at most
* a few hundred microseconds (24 * 8 bits + PLCP time gives
* 384us in the longest case), this is currently not relevant
* as the firmware wakes up around 2ms before the TBTT.
*/
dtim_offs = vif->bss_conf.sync_dtim_count * vif->bss_conf.beacon_int;
/* convert TU to usecs */
dtim_offs *= 1024;
ctxt_sta->dtim_tsf = cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs);
ctxt_sta->dtim_time = cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs);
ctxt_sta->assoc_beacon_arrive_time = cpu_to_le32(vif->bss_conf.sync_device_ts);
IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", le64_to_cpu(ctxt_sta->dtim_tsf),
le32_to_cpu(ctxt_sta->dtim_time), dtim_offs);
ctxt_sta->is_assoc = cpu_to_le32(1);
} else {
ctxt_sta->is_assoc = cpu_to_le32(0);
/* Allow beacons to pass through as long as we are not
* associated, or we do not have dtim period information.
*/
cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
}
ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int);
ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * vif->bss_conf.dtim_period);
ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval);
ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid);
if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p) {
cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
}
if (vif->bss_conf.assoc && vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
if (vif->bss_conf.twt_requester) {
ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED);
}
}
#endif // NEEDS_PORTING
return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}
#if 0 // NEEDS_PORTING
static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
uint32_t action) {
struct iwl_mac_ctx_cmd cmd = {};
uint32_t tfd_queue_msk = BIT(mvm->snif_queue);
int ret;
WARN_ON(vif->type != NL80211_IFTYPE_MONITOR);
iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
cmd.filter_flags =
cpu_to_le32(MAC_FILTER_IN_PROMISC | MAC_FILTER_IN_CONTROL_AND_MGMT | MAC_FILTER_IN_BEACON |
MAC_FILTER_IN_PROBE_REQUEST | MAC_FILTER_IN_CRC32);
ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS);
/* Allocate sniffer station */
ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, vif->type,
IWL_STA_GENERAL_PURPOSE);
if (ret) {
return ret;
}
return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}
static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
uint32_t action) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mac_ctx_cmd cmd = {};
WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | MAC_FILTER_IN_PROBE_REQUEST);
/* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */
cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int);
/* TODO: Assumes that the beacon id == mac context id */
cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id);
return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}
struct iwl_mvm_go_iterator_data {
bool go_active;
};
static void iwl_mvm_go_iterator(void* _data, uint8_t* mac, struct ieee80211_vif* vif) {
struct iwl_mvm_go_iterator_data* data = _data;
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->ap_ibss_active) {
data->go_active = true;
}
}
static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
uint32_t action) {
struct iwl_mac_ctx_cmd cmd = {};
struct iwl_mvm_go_iterator_data data = {};
WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE);
iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
/* Override the filter flags to accept only probe requests */
cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
/*
* This flag should be set to true when the P2P Device is
* discoverable and there is at least another active P2P GO. Settings
* this flag will allow the P2P Device to be discoverable on other
* channels in addition to its listen channel.
* Note that this flag should not be set in other cases as it opens the
* Rx filters on all MAC and increases the number of interrupts.
*/
ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
iwl_mvm_go_iterator, &data);
cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0);
return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}
static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm* mvm, __le32* tim_index, __le32* tim_size,
uint8_t* beacon, uint32_t frame_size) {
uint32_t tim_idx;
struct ieee80211_mgmt* mgmt = (struct ieee80211_mgmt*)beacon;
/* The index is relative to frame start but we start looking at the
* variable-length part of the beacon. */
tim_idx = mgmt->u.beacon.variable - beacon;
/* Parse variable-length elements of beacon to find WLAN_EID_TIM */
while ((tim_idx < (frame_size - 2)) && (beacon[tim_idx] != WLAN_EID_TIM)) {
tim_idx += beacon[tim_idx + 1] + 2;
}
/* If TIM field was found, set variables */
if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
*tim_index = cpu_to_le32(tim_idx);
*tim_size = cpu_to_le32((uint32_t)beacon[tim_idx + 1]);
} else {
IWL_WARN(mvm, "Unable to find TIM Element in beacon\n");
}
}
static uint32_t iwl_mvm_find_ie_offset(uint8_t* beacon, uint8_t eid, uint32_t frame_size) {
struct ieee80211_mgmt* mgmt = (void*)beacon;
const uint8_t* ie;
if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon))) {
return 0;
}
frame_size -= mgmt->u.beacon.variable - beacon;
ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size);
if (!ie) {
return 0;
}
return ie - beacon;
}
static uint8_t iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info* info,
struct ieee80211_vif* vif) {
uint8_t rate;
if (info->band == NL80211_BAND_5GHZ || vif->p2p) {
rate = IWL_FIRST_OFDM_RATE;
} else {
rate = IWL_FIRST_CCK_RATE;
}
#ifdef CPTCFG_IWLWIFI_FORCE_OFDM_RATE
rate = IWL_FIRST_OFDM_RATE;
#endif
return rate;
}
static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
struct sk_buff* beacon, struct iwl_tx_cmd* tx) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct ieee80211_tx_info* info;
uint8_t rate;
uint32_t tx_flags;
info = IEEE80211_SKB_CB(beacon);
/* Set up TX command fields */
tx->len = cpu_to_le16((uint16_t)beacon->len);
tx->sta_id = mvmvif->bcast_sta.sta_id;
tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF;
tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, (void*)beacon->data, info, 0) << TX_CMD_FLG_BT_PRIO_POS;
tx->tx_flags = cpu_to_le32(tx_flags);
/*
* TODO: the firwmare advertises this, but has a bug. We should revert
* this when the firmware will be fixed.
*/
if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION) || true) {
iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
tx->rate_n_flags = cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS);
}
rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate));
if (rate == IWL_FIRST_CCK_RATE) {
tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK);
}
}
static int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm* mvm, struct sk_buff* beacon, void* data,
int len) {
struct iwl_host_cmd cmd = {
.id = BEACON_TEMPLATE_CMD,
.flags = CMD_ASYNC,
};
cmd.len[0] = len;
cmd.data[0] = data;
cmd.dataflags[0] = 0;
cmd.len[1] = beacon->len;
cmd.data[1] = beacon->data;
cmd.dataflags[1] = IWL_HCMD_DFL_DUP;
return iwl_mvm_send_cmd(mvm, &cmd);
}
static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
struct sk_buff* beacon) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mac_beacon_cmd_v6 beacon_cmd = {};
iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
beacon_cmd.template_id = cpu_to_le32((uint32_t)mvmvif->id);
if (vif->type == NL80211_IFTYPE_AP)
iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, &beacon_cmd.tim_size, beacon->data,
beacon->len);
return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, sizeof(beacon_cmd));
}
static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
struct sk_buff* beacon) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mac_beacon_cmd_v7 beacon_cmd = {};
iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx);
beacon_cmd.template_id = cpu_to_le32((uint32_t)mvmvif->id);
if (vif->type == NL80211_IFTYPE_AP)
iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, &beacon_cmd.tim_size, beacon->data,
beacon->len);
beacon_cmd.csa_offset =
cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, WLAN_EID_CHANNEL_SWITCH, beacon->len));
beacon_cmd.ecsa_offset =
cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, WLAN_EID_EXT_CHANSWITCH_ANN, beacon->len));
return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, sizeof(beacon_cmd));
}
static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
struct sk_buff* beacon) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct ieee80211_tx_info* info = IEEE80211_SKB_CB(beacon);
struct iwl_mac_beacon_cmd beacon_cmd = {};
uint8_t rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif);
uint16_t flags;
flags = iwl_mvm_mac80211_idx_to_hwrate(rate);
if (rate == IWL_FIRST_CCK_RATE) {
flags |= IWL_MAC_BEACON_CCK;
}
beacon_cmd.flags = cpu_to_le16(flags);
beacon_cmd.byte_cnt = cpu_to_le16((uint16_t)beacon->len);
beacon_cmd.template_id = cpu_to_le32((uint32_t)mvmvif->id);
if (vif->type == NL80211_IFTYPE_AP)
iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, &beacon_cmd.tim_size, beacon->data,
beacon->len);
beacon_cmd.csa_offset =
cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, WLAN_EID_CHANNEL_SWITCH, beacon->len));
beacon_cmd.ecsa_offset =
cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, WLAN_EID_EXT_CHANSWITCH_ANN, beacon->len));
return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, sizeof(beacon_cmd));
}
static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
struct sk_buff* beacon) {
if (WARN_ON(!beacon)) {
return -EINVAL;
}
if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) {
return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon);
}
/* TODO: remove first condition once FW merge new TLV */
if (iwl_mvm_has_new_tx_api(mvm) ||
fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) {
return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon);
}
return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon);
}
/* The beacon template for the AP/GO/IBSS has changed and needs update */
int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm* mvm, struct ieee80211_vif* vif) {
struct sk_buff* beacon;
int ret;
WARN_ON(vif->type != NL80211_IFTYPE_AP && vif->type != NL80211_IFTYPE_ADHOC);
beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL);
if (!beacon) {
return -ENOMEM;
}
ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon);
dev_kfree_skb(beacon);
return ret;
}
struct iwl_mvm_mac_ap_iterator_data {
struct iwl_mvm* mvm;
struct ieee80211_vif* vif;
uint32_t beacon_device_ts;
uint16_t beacon_int;
};
/* Find the beacon_device_ts and beacon_int for a managed interface */
static void iwl_mvm_mac_ap_iterator(void* _data, uint8_t* mac, struct ieee80211_vif* vif) {
struct iwl_mvm_mac_ap_iterator_data* data = _data;
if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) {
return;
}
/* Station client has higher priority over P2P client*/
if (vif->p2p && data->beacon_device_ts) {
return;
}
data->beacon_device_ts = vif->bss_conf.sync_device_ts;
data->beacon_int = vif->bss_conf.beacon_int;
}
/*
* Fill the specific data for mac context of type AP of P2P GO
*/
static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
struct iwl_mac_ctx_cmd* cmd,
struct iwl_mac_data_ap* ctxt_ap, bool add) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_mac_ap_iterator_data data = {.mvm = mvm, .vif = vif, .beacon_device_ts = 0};
/* in AP mode, the MCAST FIFO takes the EDCA params from VO */
cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST);
/*
* in AP mode, pass probe requests and beacons from other APs
* (needed for ht protection); when there're no any associated
* station don't ask FW to pass beacons to prevent unnecessary
* wake-ups.
*/
cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST);
if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) {
cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON);
IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n");
} else {
IWL_DEBUG_HC(mvm, "No need to receive beacons\n");
}
if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) {
cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX);
}
ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int);
ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * vif->bss_conf.dtim_period);
if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue);
}
/*
* Only set the beacon time when the MAC is being added, when we
* just modify the MAC then we should keep the time -- the firmware
* can otherwise have a "jumping" TBTT.
*/
if (add) {
/*
* If there is a station/P2P client interface which is
* associated, set the AP's TBTT far enough from the station's
* TBTT. Otherwise, set it to the current system time
*/
ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
iwl_mvm_mac_ap_iterator, &data);
if (data.beacon_device_ts) {
uint32_t rand = (prandom_u32() % (64 - 36)) + 36;
mvmvif->ap_beacon_time =
data.beacon_device_ts + ieee80211_tu_to_usec(data.beacon_int * rand / 100);
} else {
mvmvif->ap_beacon_time = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
}
}
ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time);
ctxt_ap->beacon_tsf = 0; /* unused */
/* TODO: Assume that the beacon id == mac context id */
ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id);
}
static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
uint32_t action) {
struct iwl_mac_ctx_cmd cmd = {};
WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p);
/* Fill the common data for all mac context types */
iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
/* Fill the data specific for ap mode */
iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, action == FW_CTXT_ACTION_ADD);
return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}
static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm* mvm, struct ieee80211_vif* vif,
uint32_t action) {
struct iwl_mac_ctx_cmd cmd = {};
struct ieee80211_p2p_noa_attr* noa = &vif->bss_conf.p2p_noa_attr;
WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p);
/* Fill the common data for all mac context types */
iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action);
/* Fill the data specific for GO mode */
iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, action == FW_CTXT_ACTION_ADD);
cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK);
cmd.go.opp_ps_enabled = cpu_to_le32(!!(noa->oppps_ctwindow & IEEE80211_P2P_OPPPS_ENABLE_BIT));
return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd);
}
#endif // NEEDS_PORTING
static zx_status_t iwl_mvm_mac_ctx_send(struct iwl_mvm_vif* mvmvif, uint32_t action,
bool force_assoc_off, const uint8_t* bssid_override) {
switch (mvmvif->mac_role) {
case WLAN_MAC_ROLE_CLIENT:
return iwl_mvm_mac_ctxt_cmd_sta(mvmvif, action, force_assoc_off, bssid_override);
break;
#if 0 // NEEDS_PORTING
case NL80211_IFTYPE_AP:
if (!vif->p2p) {
return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action);
} else {
return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action);
}
break;
case NL80211_IFTYPE_MONITOR:
return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action);
case NL80211_IFTYPE_P2P_DEVICE:
return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action);
case NL80211_IFTYPE_ADHOC:
return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action);
#endif // NEEDS_PORTING
default:
break;
}
return ZX_ERR_NOT_SUPPORTED;
}
zx_status_t iwl_mvm_mac_ctxt_add(struct iwl_mvm_vif* mvmvif) {
zx_status_t ret;
#if 0 // NEEDS_PORTING
if (WARN_ON_ONCE(vif->type == NL80211_IFTYPE_NAN)) {
return ZX_ERR_NOT_SUPPORTED;
}
#endif // NEEDS_PORTING
iwl_assert_lock_held(&mvmvif->mvm->mutex);
if (mvmvif->uploaded) {
IWL_ERR(mvm, "Adding active MAC\n");
return ZX_ERR_IO;
}
ret = iwl_mvm_mac_ctx_send(mvmvif, FW_CTXT_ACTION_ADD, true, NULL);
if (ret != ZX_OK) {
return ret;
}
/* will only do anything at resume from D3 time */
iwl_mvm_set_last_nonqos_seq(mvmvif);
mvmvif->uploaded = true;
return ZX_OK;
}
zx_status_t iwl_mvm_mac_ctxt_changed(struct iwl_mvm_vif* mvmvif, bool force_assoc_off,
const uint8_t* bssid_override) {
#if 0 // NEEDS_PORTING
if (WARN_ON_ONCE(vif->type == NL80211_IFTYPE_NAN)) {
return -EOPNOTSUPP;
}
#endif // NEEDS_PORTING
iwl_assert_lock_held(&mvmvif->mvm->mutex);
if (!mvmvif->uploaded) {
IWL_ERR(mvm, "Changing inactive MAC\n");
return ZX_ERR_IO;
}
return iwl_mvm_mac_ctx_send(mvmvif, FW_CTXT_ACTION_MODIFY, force_assoc_off, bssid_override);
}
zx_status_t iwl_mvm_mac_ctxt_remove(struct iwl_mvm_vif* mvmvif) {
struct iwl_mac_ctx_cmd cmd;
zx_status_t ret;
struct iwl_mvm* mvm = mvmvif->mvm;
iwl_assert_lock_held(&mvm->mutex);
#if 0 // NEEDS_PORTING
if (WARN_ON_ONCE(vif->type == NL80211_IFTYPE_NAN)) {
return -EOPNOTSUPP;
}
#endif // NEEDS_PORTING
if (!mvmvif->uploaded) {
IWL_ERR(mvm, "Removing inactive MAC\n");
return ZX_ERR_IO;
}
memset(&cmd, 0, sizeof(cmd));
cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color));
cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE);
ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, sizeof(cmd), &cmd);
if (ret) {
IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret);
return ret;
}
mvmvif->uploaded = false;
#if 0 // NEEDS_PORTING
if (vif->type == NL80211_IFTYPE_MONITOR) {
__clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags);
iwl_mvm_dealloc_snif_sta(mvm);
}
#endif // NEEDS_PORTING
return ZX_OK;
}
#if 0 // NEEDS_PORTING
static void iwl_mvm_csa_count_down(struct iwl_mvm* mvm, struct ieee80211_vif* csa_vif, uint32_t gp2,
bool tx_success) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
/* Don't start to countdown from a failed beacon */
if (!tx_success && !mvmvif->csa_countdown) {
return;
}
mvmvif->csa_countdown = true;
if (!ieee80211_csa_is_complete(csa_vif)) {
int c = ieee80211_csa_update_counter(csa_vif);
iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif);
if (csa_vif->p2p && !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && tx_success) {
uint32_t rel_time = (c + 1) * csa_vif->bss_conf.beacon_int - IWL_MVM_CHANNEL_SWITCH_TIME_GO;
uint32_t apply_time = gp2 + rel_time * 1024;
iwl_mvm_schedule_csa_period(
mvm, csa_vif, IWL_MVM_CHANNEL_SWITCH_TIME_GO - IWL_MVM_CHANNEL_SWITCH_MARGIN, apply_time);
}
} else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) {
/* we don't have CSA NoA scheduled yet, switch now */
ieee80211_csa_finish(csa_vif);
RCU_INIT_POINTER(mvm->csa_vif, NULL);
}
}
void iwl_mvm_rx_beacon_notif(struct iwl_mvm* mvm, struct iwl_rx_cmd_buffer* rxb) {
struct iwl_rx_packet* pkt = rxb_addr(rxb);
struct iwl_extended_beacon_notif* beacon = (void*)pkt->data;
struct iwl_mvm_tx_resp* beacon_notify_hdr;
struct ieee80211_vif* csa_vif;
struct ieee80211_vif* tx_blocked_vif;
struct agg_tx_status* agg_status;
uint16_t status;
iwl_assert_lock_held(&mvm->mutex);
beacon_notify_hdr = &beacon->beacon_notify_hdr;
mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2);
mvm->ibss_manager = beacon->ibss_mgr_status != 0;
agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr);
status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK;
IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n", status,
beacon_notify_hdr->failure_frame, le64_to_cpu(beacon->tsf), mvm->ap_last_beacon_gp2,
le32_to_cpu(beacon_notify_hdr->initial_rate));
csa_vif = rcu_dereference_protected(mvm->csa_vif, lockdep_is_held(&mvm->mutex));
if (unlikely(csa_vif && csa_vif->csa_active))
iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, (status == TX_STATUS_SUCCESS));
tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, lockdep_is_held(&mvm->mutex));
if (unlikely(tx_blocked_vif)) {
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
/*
* The channel switch is started and we have blocked the
* stations. If this is the first beacon (the timeout wasn't
* set), set the unblock timeout, otherwise countdown
*/
if (!mvm->csa_tx_block_bcn_timeout) {
mvm->csa_tx_block_bcn_timeout = IWL_MVM_CS_UNBLOCK_TX_TIMEOUT;
} else {
mvm->csa_tx_block_bcn_timeout--;
}
/* Check if the timeout is expired, and unblock tx */
if (mvm->csa_tx_block_bcn_timeout == 0) {
iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
}
}
}
static void iwl_mvm_beacon_loss_iterator(void* _data, uint8_t* mac, struct ieee80211_vif* vif) {
struct iwl_missed_beacons_notif* missed_beacons = _data;
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm* mvm = mvmvif->mvm;
struct iwl_fw_dbg_trigger_missed_bcon* bcon_trig;
struct iwl_fw_dbg_trigger_tlv* trigger;
uint32_t stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx;
uint32_t rx_missed_bcon, rx_missed_bcon_since_rx;
if (mvmvif->id != (uint16_t)le32_to_cpu(missed_beacons->mac_id)) {
return;
}
rx_missed_bcon = le32_to_cpu(missed_beacons->consec_missed_beacons);
rx_missed_bcon_since_rx = le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx);
/*
* TODO: the threshold should be adjusted based on latency conditions,
* and/or in case of a CS flow on one of the other AP vifs.
*/
if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) >
IWL_MVM_MISSED_BEACONS_THRESHOLD) {
ieee80211_beacon_loss(vif);
}
trigger =
iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), FW_DBG_TRIGGER_MISSED_BEACONS);
if (!trigger) {
return;
}
bcon_trig = (void*)trigger->data;
stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon);
stop_trig_missed_bcon_since_rx = le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx);
/* TODO: implement start trigger */
if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx ||
rx_missed_bcon >= stop_trig_missed_bcon) {
iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL);
}
}
void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm* mvm, struct iwl_rx_cmd_buffer* rxb) {
struct iwl_rx_packet* pkt = rxb_addr(rxb);
struct iwl_missed_beacons_notif* mb = (void*)pkt->data;
IWL_DEBUG_INFO(mvm, "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n",
le32_to_cpu(mb->mac_id), le32_to_cpu(mb->consec_missed_beacons),
le32_to_cpu(mb->consec_missed_beacons_since_last_rx),
le32_to_cpu(mb->num_recvd_beacons), le32_to_cpu(mb->num_expected_beacons));
ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_beacon_loss_iterator, mb);
iwl_fw_dbg_apply_point(&mvm->fwrt, IWL_FW_INI_APPLY_MISSED_BEACONS);
}
void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm* mvm, struct iwl_rx_cmd_buffer* rxb) {
struct iwl_rx_packet* pkt = rxb_addr(rxb);
struct iwl_stored_beacon_notif* sb = (void*)pkt->data;
struct ieee80211_rx_status rx_status;
struct sk_buff* skb;
uint32_t size = le32_to_cpu(sb->byte_count);
if (size == 0) {
return;
}
skb = alloc_skb(size, GFP_ATOMIC);
if (!skb) {
IWL_ERR(mvm, "alloc_skb failed\n");
return;
}
/* update rx_status according to the notification's metadata */
memset(&rx_status, 0, sizeof(rx_status));
rx_status.mactime = le64_to_cpu(sb->tsf);
/* TSF as indicated by the firmware is at INA time */
rx_status.flag |= RX_FLAG_MACTIME_PLCP_START;
rx_status.device_timestamp = le32_to_cpu(sb->system_time);
rx_status.band =
(sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
rx_status.freq = ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), rx_status.band);
/* copy the data */
skb_put_data(skb, sb->data, size);
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
/* pass it as regular rx to mac80211 */
ieee80211_rx_napi(mvm->hw, NULL, skb, NULL);
}
static void iwl_mvm_probe_resp_data_iter(void* _data, uint8_t* mac, struct ieee80211_vif* vif) {
struct iwl_probe_resp_data_notif* notif = _data;
struct iwl_mvm_vif* mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_probe_resp_data *old_data, *new_data;
if (mvmvif->id != (uint16_t)le32_to_cpu(notif->mac_id)) {
return;
}
new_data = kzalloc(sizeof(*new_data), GFP_KERNEL);
if (!new_data) {
return;
}
memcpy(&new_data->notif, notif, sizeof(new_data->notif));
/* noa_attr contains 1 reserved byte, need to substruct it */
new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + sizeof(new_data->notif.noa_attr) - 1;
/*
* If it's a one time NoA, only one descriptor is needed,
* adjust the length according to len_low.
*/
if (new_data->notif.noa_attr.len_low == sizeof(struct ieee80211_p2p_noa_desc) + 2) {
new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc);
}
old_data =
rcu_dereference_protected(mvmvif->probe_resp_data, lockdep_is_held(&mvmvif->mvm->mutex));
rcu_assign_pointer(mvmvif->probe_resp_data, new_data);
if (old_data) {
kfree_rcu(old_data, rcu_head);
}
if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && notif->csa_counter >= 1) {
ieee80211_csa_set_counter(vif, notif->csa_counter);
}
}
void iwl_mvm_probe_resp_data_notif(struct iwl_mvm* mvm, struct iwl_rx_cmd_buffer* rxb) {
struct iwl_rx_packet* pkt = rxb_addr(rxb);
struct iwl_probe_resp_data_notif* notif = (void*)pkt->data;
int len = iwl_rx_packet_payload_len(pkt);
if (WARN_ON_ONCE(len < sizeof(*notif))) {
return;
}
IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", notif->noa_active,
notif->csa_counter);
ieee80211_iterate_active_interfaces(mvm->hw, IEEE80211_IFACE_ITER_ACTIVE,
iwl_mvm_probe_resp_data_iter, notif);
}
void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm* mvm, struct iwl_rx_cmd_buffer* rxb) {
struct iwl_rx_packet* pkt = rxb_addr(rxb);
struct iwl_channel_switch_noa_notif* notif = (void*)pkt->data;
struct ieee80211_vif* csa_vif;
struct iwl_mvm_vif* mvmvif;
int len = iwl_rx_packet_payload_len(pkt);
uint32_t id_n_color;
if (WARN_ON_ONCE(len < sizeof(*notif))) {
return;
}
rcu_read_lock();
csa_vif = rcu_dereference(mvm->csa_vif);
if (WARN_ON(!csa_vif || !csa_vif->csa_active)) {
goto out_unlock;
}
id_n_color = le32_to_cpu(notif->id_and_color);
mvmvif = iwl_mvm_vif_from_mac80211(csa_vif);
if (WARN(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color) != id_n_color,
"channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)",
FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color), id_n_color)) {
goto out_unlock;
}
IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n");
schedule_delayed_work(&mvm->cs_tx_unblock_dwork, msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT *
csa_vif->bss_conf.beacon_int));
ieee80211_csa_finish(csa_vif);
rcu_read_unlock();
RCU_INIT_POINTER(mvm->csa_vif, NULL);
return;
out_unlock:
rcu_read_unlock();
}
#endif // NEEDS_PORTING