kvj
/
linux-zen-desktop
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
linux-zen-desktop/drivers/net/wireless/intel/iwlwifi/mvm/d3.c

3161 lines
83 KiB
C
Raw Normal View History

Initial commit
2023-08-30 17:31:07 +02:00
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2012-2014, 2018-2022 Intel Corporation
* Copyright (C) 2013-2015 Intel Mobile Communications GmbH
* Copyright (C) 2016-2017 Intel Deutschland GmbH
*/
#include <linux/etherdevice.h>
#include <linux/ip.h>
#include <linux/fs.h>
#include <net/cfg80211.h>
#include <net/ipv6.h>
#include <net/tcp.h>
#include <net/addrconf.h>
#include "iwl-modparams.h"
#include "fw-api.h"
#include "mvm.h"
#include "fw/img.h"
void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_gtk_rekey_data *data)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
mutex_lock(&mvm->mutex);
mvmvif->rekey_data.kek_len = data->kek_len;
mvmvif->rekey_data.kck_len = data->kck_len;
memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len);
memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len);
mvmvif->rekey_data.akm = data->akm & 0xFF;
mvmvif->rekey_data.replay_ctr =
cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
mvmvif->rekey_data.valid = true;
mutex_unlock(&mvm->mutex);
}
#if IS_ENABLED(CONFIG_IPV6)
void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct inet6_dev *idev)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct inet6_ifaddr *ifa;
int idx = 0;
memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
read_lock_bh(&idev->lock);
list_for_each_entry(ifa, &idev->addr_list, if_list) {
mvmvif->target_ipv6_addrs[idx] = ifa->addr;
if (ifa->flags & IFA_F_TENTATIVE)
__set_bit(idx, mvmvif->tentative_addrs);
idx++;
if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
break;
}
read_unlock_bh(&idev->lock);
mvmvif->num_target_ipv6_addrs = idx;
}
#endif
void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, int idx)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
mvmvif->tx_key_idx = idx;
}
static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
{
int i;
for (i = 0; i < IWL_P1K_SIZE; i++)
out[i] = cpu_to_le16(p1k[i]);
}
static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
struct iwl_mvm_key_pn *ptk_pn,
struct ieee80211_key_seq *seq,
int tid, int queues)
{
const u8 *ret = seq->ccmp.pn;
int i;
/* get the PN from mac80211, used on the default queue */
ieee80211_get_key_rx_seq(key, tid, seq);
/* and use the internal data for the other queues */
for (i = 1; i < queues; i++) {
const u8 *tmp = ptk_pn->q[i].pn[tid];
if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
ret = tmp;
}
return ret;
}
struct wowlan_key_reprogram_data {
bool error;
int wep_key_idx;
};
static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *_data)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct wowlan_key_reprogram_data *data = _data;
int ret;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
struct {
struct iwl_mvm_wep_key_cmd wep_key_cmd;
struct iwl_mvm_wep_key wep_key;
} __packed wkc = {
.wep_key_cmd.mac_id_n_color =
cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
mvmvif->color)),
.wep_key_cmd.num_keys = 1,
/* firmware sets STA_KEY_FLG_WEP_13BYTES */
.wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
.wep_key.key_index = key->keyidx,
.wep_key.key_size = key->keylen,
};
/*
* This will fail -- the key functions don't set support
* pairwise WEP keys. However, that's better than silently
* failing WoWLAN. Or maybe not?
*/
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
break;
memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
if (key->keyidx == mvmvif->tx_key_idx) {
/* TX key must be at offset 0 */
wkc.wep_key.key_offset = 0;
} else {
/* others start at 1 */
data->wep_key_idx++;
wkc.wep_key.key_offset = data->wep_key_idx;
}
mutex_lock(&mvm->mutex);
ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
data->error = ret != 0;
mvm->ptk_ivlen = key->iv_len;
mvm->ptk_icvlen = key->icv_len;
mvm->gtk_ivlen = key->iv_len;
mvm->gtk_icvlen = key->icv_len;
mutex_unlock(&mvm->mutex);
/* don't upload key again */
return;
}
default:
data->error = true;
return;
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
return;
case WLAN_CIPHER_SUITE_AES_CMAC:
/*
* Ignore CMAC keys -- the WoWLAN firmware doesn't support them
* but we also shouldn't abort suspend due to that. It does have
* support for the IGTK key renewal, but doesn't really use the
* IGTK for anything. This means we could spuriously wake up or
* be deauthenticated, but that was considered acceptable.
*/
return;
case WLAN_CIPHER_SUITE_TKIP:
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
break;
}
mutex_lock(&mvm->mutex);
/*
* The D3 firmware hardcodes the key offset 0 as the key it
* uses to transmit packets to the AP, i.e. the PTK.
*/
if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
mvm->ptk_ivlen = key->iv_len;
mvm->ptk_icvlen = key->icv_len;
ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
} else {
/*
* firmware only supports TSC/RSC for a single key,
* so if there are multiple keep overwriting them
* with new ones -- this relies on mac80211 doing
* list_add_tail().
*/
mvm->gtk_ivlen = key->iv_len;
mvm->gtk_icvlen = key->icv_len;
ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
}
mutex_unlock(&mvm->mutex);
data->error = ret != 0;
}
struct wowlan_key_rsc_tsc_data {
struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc;
bool have_rsc_tsc;
};
static void iwl_mvm_wowlan_get_rsc_tsc_data(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *_data)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct wowlan_key_rsc_tsc_data *data = _data;
struct aes_sc *aes_sc;
struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
struct ieee80211_key_seq seq;
int i;
switch (key->cipher) {
default:
break;
case WLAN_CIPHER_SUITE_TKIP:
if (sta) {
u64 pn64;
tkip_sc =
data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc;
tkip_tx_sc =
&data->rsc_tsc->params.all_tsc_rsc.tkip.tsc;
pn64 = atomic64_read(&key->tx_pn);
tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
} else {
tkip_sc =
data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc;
}
/*
* For non-QoS this relies on the fact that both the uCode and
* mac80211 use TID 0 (as they need to to avoid replay attacks)
* for checking the IV in the frames.
*/
for (i = 0; i < IWL_NUM_RSC; i++) {
ieee80211_get_key_rx_seq(key, i, &seq);
tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
}
data->have_rsc_tsc = true;
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
if (sta) {
struct aes_sc *aes_tx_sc;
u64 pn64;
aes_sc =
data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc;
aes_tx_sc =
&data->rsc_tsc->params.all_tsc_rsc.aes.tsc;
pn64 = atomic64_read(&key->tx_pn);
aes_tx_sc->pn = cpu_to_le64(pn64);
} else {
aes_sc =
data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc;
}
/*
* For non-QoS this relies on the fact that both the uCode and
* mac80211/our RX code use TID 0 for checking the PN.
*/
if (sta && iwl_mvm_has_new_rx_api(mvm)) {
struct iwl_mvm_sta *mvmsta;
struct iwl_mvm_key_pn *ptk_pn;
const u8 *pn;
mvmsta = iwl_mvm_sta_from_mac80211(sta);
rcu_read_lock();
ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
if (WARN_ON(!ptk_pn)) {
rcu_read_unlock();
break;
}
for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
mvm->trans->num_rx_queues);
aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
((u64)pn[4] << 8) |
((u64)pn[3] << 16) |
((u64)pn[2] << 24) |
((u64)pn[1] << 32) |
((u64)pn[0] << 40));
}
rcu_read_unlock();
} else {
for (i = 0; i < IWL_NUM_RSC; i++) {
u8 *pn = seq.ccmp.pn;
ieee80211_get_key_rx_seq(key, i, &seq);
aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
((u64)pn[4] << 8) |
((u64)pn[3] << 16) |
((u64)pn[2] << 24) |
((u64)pn[1] << 32) |
((u64)pn[0] << 40));
}
}
data->have_rsc_tsc = true;
break;
}
}
struct wowlan_key_rsc_v5_data {
struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
bool have_rsc;
int gtks;
int gtk_ids[4];
};
static void iwl_mvm_wowlan_get_rsc_v5_data(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *_data)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct wowlan_key_rsc_v5_data *data = _data;
struct ieee80211_key_seq seq;
__le64 *rsc;
int i;
/* only for ciphers that can be PTK/GTK */
switch (key->cipher) {
default:
return;
case WLAN_CIPHER_SUITE_TKIP:
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
break;
}
if (sta) {
rsc = data->rsc->ucast_rsc;
} else {
if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids)))
return;
data->gtk_ids[data->gtks] = key->keyidx;
rsc = data->rsc->mcast_rsc[data->gtks % 2];
if (WARN_ON(key->keyidx >=
ARRAY_SIZE(data->rsc->mcast_key_id_map)))
return;
data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2;
if (data->gtks >= 2) {
int prev = data->gtks - 2;
int prev_idx = data->gtk_ids[prev];
data->rsc->mcast_key_id_map[prev_idx] =
IWL_MCAST_KEY_MAP_INVALID;
}
data->gtks++;
}
switch (key->cipher) {
default:
WARN_ON(1);
break;
case WLAN_CIPHER_SUITE_TKIP:
/*
* For non-QoS this relies on the fact that both the uCode and
* mac80211 use TID 0 (as they need to to avoid replay attacks)
* for checking the IV in the frames.
*/
for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
ieee80211_get_key_rx_seq(key, i, &seq);
rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) |
seq.tkip.iv16);
}
data->have_rsc = true;
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
/*
* For non-QoS this relies on the fact that both the uCode and
* mac80211/our RX code use TID 0 for checking the PN.
*/
if (sta) {
struct iwl_mvm_sta *mvmsta;
struct iwl_mvm_key_pn *ptk_pn;
const u8 *pn;
mvmsta = iwl_mvm_sta_from_mac80211(sta);
rcu_read_lock();
ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
if (WARN_ON(!ptk_pn)) {
rcu_read_unlock();
break;
}
for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
mvm->trans->num_rx_queues);
rsc[i] = cpu_to_le64((u64)pn[5] |
((u64)pn[4] << 8) |
((u64)pn[3] << 16) |
((u64)pn[2] << 24) |
((u64)pn[1] << 32) |
((u64)pn[0] << 40));
}
rcu_read_unlock();
} else {
for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
u8 *pn = seq.ccmp.pn;
ieee80211_get_key_rx_seq(key, i, &seq);
rsc[i] = cpu_to_le64((u64)pn[5] |
((u64)pn[4] << 8) |
((u64)pn[3] << 16) |
((u64)pn[2] << 24) |
((u64)pn[1] << 32) |
((u64)pn[0] << 40));
}
}
data->have_rsc = true;
break;
}
}
static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM,
IWL_FW_CMD_VER_UNKNOWN);
int ret;
if (ver == 5) {
struct wowlan_key_rsc_v5_data data = {};
int i;
data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL);
if (!data.rsc)
return -ENOMEM;
memset(data.rsc, 0xff, sizeof(*data.rsc));
for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++)
data.rsc->mcast_key_id_map[i] =
IWL_MCAST_KEY_MAP_INVALID;
data.rsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
ieee80211_iter_keys(mvm->hw, vif,
iwl_mvm_wowlan_get_rsc_v5_data,
&data);
if (data.have_rsc)
ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
CMD_ASYNC, sizeof(*data.rsc),
data.rsc);
else
ret = 0;
kfree(data.rsc);
} else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) {
struct wowlan_key_rsc_tsc_data data = {};
int size;
data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL);
if (!data.rsc_tsc)
return -ENOMEM;
if (ver == 4) {
size = sizeof(*data.rsc_tsc);
data.rsc_tsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id);
} else {
/* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */
size = sizeof(data.rsc_tsc->params);
}
ieee80211_iter_keys(mvm->hw, vif,
iwl_mvm_wowlan_get_rsc_tsc_data,
&data);
if (data.have_rsc_tsc)
ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM,
CMD_ASYNC, size,
data.rsc_tsc);
else
ret = 0;
kfree(data.rsc_tsc);
} else {
ret = 0;
WARN_ON_ONCE(1);
}
return ret;
}
struct wowlan_key_tkip_data {
struct iwl_wowlan_tkip_params_cmd tkip;
bool have_tkip_keys;
};
static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *_data)
{
struct wowlan_key_tkip_data *data = _data;
struct iwl_p1k_cache *rx_p1ks;
u8 *rx_mic_key;
struct ieee80211_key_seq seq;
u32 cur_rx_iv32 = 0;
u16 p1k[IWL_P1K_SIZE];
int i;
switch (key->cipher) {
default:
break;
case WLAN_CIPHER_SUITE_TKIP:
if (sta) {
u64 pn64;
rx_p1ks = data->tkip.rx_uni;
pn64 = atomic64_read(&key->tx_pn);
ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
p1k);
iwl_mvm_convert_p1k(p1k, data->tkip.tx.p1k);
memcpy(data->tkip.mic_keys.tx,
&key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
IWL_MIC_KEY_SIZE);
rx_mic_key = data->tkip.mic_keys.rx_unicast;
} else {
rx_p1ks = data->tkip.rx_multi;
rx_mic_key = data->tkip.mic_keys.rx_mcast;
}
for (i = 0; i < IWL_NUM_RSC; i++) {
ieee80211_get_key_rx_seq(key, i, &seq);
/* wrapping isn't allowed, AP must rekey */
if (seq.tkip.iv32 > cur_rx_iv32)
cur_rx_iv32 = seq.tkip.iv32;
}
ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
cur_rx_iv32, p1k);
iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
cur_rx_iv32 + 1, p1k);
iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
memcpy(rx_mic_key,
&key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
IWL_MIC_KEY_SIZE);
data->have_tkip_keys = true;
break;
}
}
struct wowlan_key_gtk_type_iter {
struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd;
};
static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *_data)
{
struct wowlan_key_gtk_type_iter *data = _data;
switch (key->cipher) {
default:
return;
case WLAN_CIPHER_SUITE_TKIP:
if (!sta)
data->kek_kck_cmd->gtk_cipher =
cpu_to_le32(STA_KEY_FLG_TKIP);
return;
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
return;
case WLAN_CIPHER_SUITE_AES_CMAC:
data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM);
return;
case WLAN_CIPHER_SUITE_CCMP:
if (!sta)
data->kek_kck_cmd->gtk_cipher =
cpu_to_le32(STA_KEY_FLG_CCM);
return;
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
if (!sta)
data->kek_kck_cmd->gtk_cipher =
cpu_to_le32(STA_KEY_FLG_GCMP);
return;
}
}
static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm,
struct cfg80211_wowlan *wowlan)
{
struct iwl_wowlan_patterns_cmd_v1 *pattern_cmd;
struct iwl_host_cmd cmd = {
.id = WOWLAN_PATTERNS,
.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
};
int i, err;
if (!wowlan->n_patterns)
return 0;
cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
if (!pattern_cmd)
return -ENOMEM;
pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
for (i = 0; i < wowlan->n_patterns; i++) {
int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
memcpy(&pattern_cmd->patterns[i].mask,
wowlan->patterns[i].mask, mask_len);
memcpy(&pattern_cmd->patterns[i].pattern,
wowlan->patterns[i].pattern,
wowlan->patterns[i].pattern_len);
pattern_cmd->patterns[i].mask_size = mask_len;
pattern_cmd->patterns[i].pattern_size =
wowlan->patterns[i].pattern_len;
}
cmd.data[0] = pattern_cmd;
err = iwl_mvm_send_cmd(mvm, &cmd);
kfree(pattern_cmd);
return err;
}
static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct cfg80211_wowlan *wowlan)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_wowlan_patterns_cmd *pattern_cmd;
struct iwl_host_cmd cmd = {
.id = WOWLAN_PATTERNS,
.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
};
int i, err;
int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
IWL_FW_CMD_VER_UNKNOWN);
if (!wowlan->n_patterns)
return 0;
cmd.len[0] = sizeof(*pattern_cmd) +
wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2);
pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
if (!pattern_cmd)
return -ENOMEM;
pattern_cmd->n_patterns = wowlan->n_patterns;
if (ver >= 3)
pattern_cmd->sta_id = mvmvif->ap_sta_id;
for (i = 0; i < wowlan->n_patterns; i++) {
int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
pattern_cmd->patterns[i].pattern_type =
WOWLAN_PATTERN_TYPE_BITMASK;
memcpy(&pattern_cmd->patterns[i].u.bitmask.mask,
wowlan->patterns[i].mask, mask_len);
memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern,
wowlan->patterns[i].pattern,
wowlan->patterns[i].pattern_len);
pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len;
pattern_cmd->patterns[i].u.bitmask.pattern_size =
wowlan->patterns[i].pattern_len;
}
cmd.data[0] = pattern_cmd;
err = iwl_mvm_send_cmd(mvm, &cmd);
kfree(pattern_cmd);
return err;
}
static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_sta *ap_sta)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct ieee80211_chanctx_conf *ctx;
u8 chains_static, chains_dynamic;
struct cfg80211_chan_def chandef;
int ret, i;
struct iwl_binding_cmd_v1 binding_cmd = {};
struct iwl_time_quota_cmd quota_cmd = {};
struct iwl_time_quota_data *quota;
u32 status;
if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm)))
return -EINVAL;
/* add back the PHY */
if (WARN_ON(!mvmvif->phy_ctxt))
return -EINVAL;
rcu_read_lock();
ctx = rcu_dereference(vif->bss_conf.chanctx_conf);
if (WARN_ON(!ctx)) {
rcu_read_unlock();
return -EINVAL;
}
chandef = ctx->def;
chains_static = ctx->rx_chains_static;
chains_dynamic = ctx->rx_chains_dynamic;
rcu_read_unlock();
ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
chains_static, chains_dynamic);
if (ret)
return ret;
/* add back the MAC */
mvmvif->uploaded = false;
if (WARN_ON(!vif->cfg.assoc))
return -EINVAL;
ret = iwl_mvm_mac_ctxt_add(mvm, vif);
if (ret)
return ret;
/* add back binding - XXX refactor? */
binding_cmd.id_and_color =
cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
mvmvif->phy_ctxt->color));
binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
binding_cmd.phy =
cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
mvmvif->phy_ctxt->color));
binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
mvmvif->color));
for (i = 1; i < MAX_MACS_IN_BINDING; i++)
binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
status = 0;
ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
IWL_BINDING_CMD_SIZE_V1, &binding_cmd,
&status);
if (ret) {
IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
return ret;
}
if (status) {
IWL_ERR(mvm, "Binding command failed: %u\n", status);
return -EIO;
}
ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
if (ret)
return ret;
rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
if (ret)
return ret;
/* and some quota */
quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, 0);
quota->id_and_color =
cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
mvmvif->phy_ctxt->color));
quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
for (i = 1; i < MAX_BINDINGS; i++) {
quota = iwl_mvm_quota_cmd_get_quota(mvm, &quota_cmd, i);
quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
}
ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
iwl_mvm_quota_cmd_size(mvm), &quota_cmd);
if (ret)
IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
return 0;
}
static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_nonqos_seq_query_cmd query_cmd = {
.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
.mac_id_n_color =
cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
mvmvif->color)),
};
struct iwl_host_cmd cmd = {
.id = NON_QOS_TX_COUNTER_CMD,
.flags = CMD_WANT_SKB,
};
int err;
u32 size;
cmd.data[0] = &query_cmd;
cmd.len[0] = sizeof(query_cmd);
err = iwl_mvm_send_cmd(mvm, &cmd);
if (err)
return err;
size = iwl_rx_packet_payload_len(cmd.resp_pkt);
if (size < sizeof(__le16)) {
err = -EINVAL;
} else {
err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
/* firmware returns next, not last-used seqno */
err = (u16) (err - 0x10);
}
iwl_free_resp(&cmd);
return err;
}
void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_nonqos_seq_query_cmd query_cmd = {
.get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
.mac_id_n_color =
cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
mvmvif->color)),
.value = cpu_to_le16(mvmvif->seqno),
};
/* return if called during restart, not resume from D3 */
if (!mvmvif->seqno_valid)
return;
mvmvif->seqno_valid = false;
if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
sizeof(query_cmd), &query_cmd))
IWL_ERR(mvm, "failed to set non-QoS seqno\n");
}
static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
{
iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
iwl_mvm_stop_device(mvm);
/*
* Set the HW restart bit -- this is mostly true as we're
* going to load new firmware and reprogram that, though
* the reprogramming is going to be manual to avoid adding
* all the MACs that aren't support.
* We don't have to clear up everything though because the
* reprogramming is manual. When we resume, we'll actually
* go through a proper restart sequence again to switch
* back to the runtime firmware image.
*/
set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
/* the fw is reset, so all the keys are cleared */
memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
mvm->ptk_ivlen = 0;
mvm->ptk_icvlen = 0;
mvm->ptk_ivlen = 0;
mvm->ptk_icvlen = 0;
return iwl_mvm_load_d3_fw(mvm);
}
static int
iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
struct cfg80211_wowlan *wowlan,
struct iwl_wowlan_config_cmd *wowlan_config_cmd,
struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
struct ieee80211_sta *ap_sta)
{
struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
/* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
wowlan_config_cmd->is_11n_connection =
ap_sta->deflink.ht_cap.ht_supported;
wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) {
/* Query the last used seqno and set it */
int ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
if (ret < 0)
return ret;
wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
}
iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
if (wowlan->disconnect)
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
IWL_WOWLAN_WAKEUP_LINK_CHANGE);
if (wowlan->magic_pkt)
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
if (wowlan->gtk_rekey_failure)
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
if (wowlan->eap_identity_req)
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
if (wowlan->four_way_handshake)
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
if (wowlan->n_patterns)
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
if (wowlan->rfkill_release)
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
if (wowlan->tcp) {
/*
* Set the "link change" (really "link lost") flag as well
* since that implies losing the TCP connection.
*/
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
IWL_WOWLAN_WAKEUP_LINK_CHANGE);
}
if (wowlan->any) {
wowlan_config_cmd->wakeup_filter |=
cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
IWL_WOWLAN_WAKEUP_LINK_CHANGE |
IWL_WOWLAN_WAKEUP_RX_FRAME |
IWL_WOWLAN_WAKEUP_BCN_FILTERING);
}
return 0;
}
static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
bool unified = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
struct wowlan_key_reprogram_data key_data = {};
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
u8 cmd_ver;
size_t cmd_size;
if (!unified) {
/*
* if we have to configure keys, call ieee80211_iter_keys(),
* as we need non-atomic context in order to take the
* required locks.
*/
/*
* Note that currently we don't use CMD_ASYNC in the iterator.
* In case of key_data.configure_keys, all the configured
* commands are SYNC, and iwl_mvm_wowlan_program_keys() will
* take care of locking/unlocking mvm->mutex.
*/
ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys,
&key_data);
if (key_data.error)
return -EIO;
}
ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif);
if (ret)
return ret;
if (!fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) {
int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM,
IWL_FW_CMD_VER_UNKNOWN);
struct wowlan_key_tkip_data tkip_data = {};
int size;
if (ver == 2) {
size = sizeof(tkip_data.tkip);
tkip_data.tkip.sta_id =
cpu_to_le32(mvmvif->ap_sta_id);
} else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) {
size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1);
} else {
WARN_ON_ONCE(1);
return -EINVAL;
}
ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data,
&tkip_data);
if (tkip_data.have_tkip_keys) {
/* send relevant data according to CMD version */
ret = iwl_mvm_send_cmd_pdu(mvm,
WOWLAN_TKIP_PARAM,
CMD_ASYNC, size,
&tkip_data.tkip);
if (ret)
return ret;
}
}
/* configure rekey data only if offloaded rekey is supported (d3) */
if (mvmvif->rekey_data.valid) {
struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd =
&kek_kck_cmd;
struct wowlan_key_gtk_type_iter gtk_type_data = {
.kek_kck_cmd = _kek_kck_cmd,
};
cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
WOWLAN_KEK_KCK_MATERIAL,
IWL_FW_CMD_VER_UNKNOWN);
if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 &&
cmd_ver != IWL_FW_CMD_VER_UNKNOWN))
return -EINVAL;
ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter,
&gtk_type_data);
memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
mvmvif->rekey_data.kck_len);
kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len);
memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
mvmvif->rekey_data.kek_len);
kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len);
kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm);
kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id);
if (cmd_ver == 4) {
cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4);
} else {
if (cmd_ver == 3)
cmd_size =
sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3);
else
cmd_size =
sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2);
/* skip the sta_id at the beginning */
_kek_kck_cmd = (void *)
((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id));
}
IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n",
mvmvif->rekey_data.akm);
ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL,
CMD_ASYNC, cmd_size, _kek_kck_cmd);
if (ret)
return ret;
}
return 0;
}
static int
iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
struct cfg80211_wowlan *wowlan,
struct iwl_wowlan_config_cmd *wowlan_config_cmd,
struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
struct ieee80211_sta *ap_sta)
{
int ret;
bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
mvm->offload_tid = wowlan_config_cmd->offloading_tid;
if (!unified_image) {
ret = iwl_mvm_switch_to_d3(mvm);
if (ret)
return ret;
ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
if (ret)
return ret;
}
/*
* This needs to be unlocked due to lock ordering
* constraints. Since we're in the suspend path
* that isn't really a problem though.
*/
mutex_unlock(&mvm->mutex);
ret = iwl_mvm_wowlan_config_key_params(mvm, vif);
mutex_lock(&mvm->mutex);
if (ret)
return ret;
ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
sizeof(*wowlan_config_cmd),
wowlan_config_cmd);
if (ret)
return ret;
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE))
ret = iwl_mvm_send_patterns(mvm, vif, wowlan);
else
ret = iwl_mvm_send_patterns_v1(mvm, wowlan);
if (ret)
return ret;
return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
}
static int
iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
struct cfg80211_wowlan *wowlan,
struct cfg80211_sched_scan_request *nd_config,
struct ieee80211_vif *vif)
{
int ret;
bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
if (!unified_image) {
ret = iwl_mvm_switch_to_d3(mvm);
if (ret)
return ret;
} else {
/* In theory, we wouldn't have to stop a running sched
* scan in order to start another one (for
* net-detect). But in practice this doesn't seem to
* work properly, so stop any running sched_scan now.
*/
ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
if (ret)
return ret;
}
ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
IWL_MVM_SCAN_NETDETECT);
if (ret)
return ret;
if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
return -EBUSY;
/* save the sched scan matchsets... */
if (nd_config->n_match_sets) {
mvm->nd_match_sets = kmemdup(nd_config->match_sets,
sizeof(*nd_config->match_sets) *
nd_config->n_match_sets,
GFP_KERNEL);
if (mvm->nd_match_sets)
mvm->n_nd_match_sets = nd_config->n_match_sets;
}
/* ...and the sched scan channels for later reporting */
mvm->nd_channels = kmemdup(nd_config->channels,
sizeof(*nd_config->channels) *
nd_config->n_channels,
GFP_KERNEL);
if (mvm->nd_channels)
mvm->n_nd_channels = nd_config->n_channels;
return 0;
}
static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
{
kfree(mvm->nd_match_sets);
mvm->nd_match_sets = NULL;
mvm->n_nd_match_sets = 0;
kfree(mvm->nd_channels);
mvm->nd_channels = NULL;
mvm->n_nd_channels = 0;
}
static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wowlan,
bool test)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
struct ieee80211_vif *vif = NULL;
struct iwl_mvm_vif *mvmvif = NULL;
struct ieee80211_sta *ap_sta = NULL;
struct iwl_d3_manager_config d3_cfg_cmd_data = {
/*
* Program the minimum sleep time to 10 seconds, as many
* platforms have issues processing a wakeup signal while
* still being in the process of suspending.
*/
.min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
};
struct iwl_host_cmd d3_cfg_cmd = {
.id = D3_CONFIG_CMD,
.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
.data[0] = &d3_cfg_cmd_data,
.len[0] = sizeof(d3_cfg_cmd_data),
};
int ret;
int len __maybe_unused;
bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
if (!wowlan) {
/*
* mac80211 shouldn't get here, but for D3 test
* it doesn't warrant a warning
*/
WARN_ON(!test);
return -EINVAL;
}
mutex_lock(&mvm->mutex);
set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
synchronize_net();
vif = iwl_mvm_get_bss_vif(mvm);
if (IS_ERR_OR_NULL(vif)) {
ret = 1;
goto out_noreset;
}
mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (mvmvif->ap_sta_id == IWL_MVM_INVALID_STA) {
/* if we're not associated, this must be netdetect */
if (!wowlan->nd_config) {
ret = 1;
goto out_noreset;
}
ret = iwl_mvm_netdetect_config(
mvm, wowlan, wowlan->nd_config, vif);
if (ret)
goto out;
mvm->net_detect = true;
} else {
struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
wowlan_config_cmd.sta_id = mvmvif->ap_sta_id;
ap_sta = rcu_dereference_protected(
mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
lockdep_is_held(&mvm->mutex));
if (IS_ERR_OR_NULL(ap_sta)) {
ret = -EINVAL;
goto out_noreset;
}
ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
vif, mvmvif, ap_sta);
if (ret)
goto out_noreset;
ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
vif, mvmvif, ap_sta);
if (ret)
goto out;
mvm->net_detect = false;
}
ret = iwl_mvm_power_update_device(mvm);
if (ret)
goto out;
ret = iwl_mvm_power_update_mac(mvm);
if (ret)
goto out;
#ifdef CONFIG_IWLWIFI_DEBUGFS
if (mvm->d3_wake_sysassert)
d3_cfg_cmd_data.wakeup_flags |=
cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
#endif
/*
* Prior to 9000 device family the driver needs to stop the dbg
* recording before entering D3. In later devices the FW stops the
* recording automatically.
*/
if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000)
iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true);
mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
/* must be last -- this switches firmware state */
ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
if (ret)
goto out;
#ifdef CONFIG_IWLWIFI_DEBUGFS
len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
if (len >= sizeof(u32)) {
mvm->d3_test_pme_ptr =
le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
}
#endif
iwl_free_resp(&d3_cfg_cmd);
clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
out:
if (ret < 0) {
iwl_mvm_free_nd(mvm);
if (!unified_image) {
if (mvm->fw_restart > 0) {
mvm->fw_restart--;
ieee80211_restart_hw(mvm->hw);
}
}
clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
}
out_noreset:
mutex_unlock(&mvm->mutex);
return ret;
}
int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
iwl_mvm_pause_tcm(mvm, true);
iwl_fw_runtime_suspend(&mvm->fwrt);
return __iwl_mvm_suspend(hw, wowlan, false);
}
/* converted data from the different status responses */
struct iwl_wowlan_status_data {
u64 replay_ctr;
u32 num_of_gtk_rekeys;
u32 received_beacons;
u32 wakeup_reasons;
u32 wake_packet_length;
u32 wake_packet_bufsize;
u16 pattern_number;
u16 non_qos_seq_ctr;
u16 qos_seq_ctr[8];
u8 tid_tear_down;
struct {
/* including RX MIC key for TKIP */
u8 key[WOWLAN_KEY_MAX_SIZE];
u8 len;
u8 flags;
} gtk;
struct {
/*
* We store both the TKIP and AES representations
* coming from the firmware because we decode the
* data from there before we iterate the keys and
* know which one we need.
*/
struct {
struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
} tkip, aes;
/*
* We use -1 for when we have valid data but don't know
* the key ID from firmware, and thus it needs to be
* installed with the last key (depending on rekeying).
*/
s8 key_id;
bool valid;
} gtk_seq[2];
struct {
/* Same as above */
struct {
struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT];
u64 tx_pn;
} tkip, aes;
} ptk;
struct {
u64 ipn;
u8 key[WOWLAN_KEY_MAX_SIZE];
u8 len;
u8 flags;
} igtk;
u8 *wake_packet;
};
static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_wowlan_status_data *status)
{
struct sk_buff *pkt = NULL;
struct cfg80211_wowlan_wakeup wakeup = {
.pattern_idx = -1,
};
struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
u32 reasons = status->wakeup_reasons;
if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
wakeup_report = NULL;
goto report;
}
pm_wakeup_event(mvm->dev, 0);
if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
wakeup.magic_pkt = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
wakeup.pattern_idx =
status->pattern_number;
if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
wakeup.disconnect = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
wakeup.gtk_rekey_failure = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
wakeup.rfkill_release = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
wakeup.eap_identity_req = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
wakeup.four_way_handshake = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
wakeup.tcp_connlost = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
wakeup.tcp_nomoretokens = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
wakeup.tcp_match = true;
if (status->wake_packet) {
int pktsize = status->wake_packet_bufsize;
int pktlen = status->wake_packet_length;
const u8 *pktdata = status->wake_packet;
const struct ieee80211_hdr *hdr = (const void *)pktdata;
int truncated = pktlen - pktsize;
/* this would be a firmware bug */
if (WARN_ON_ONCE(truncated < 0))
truncated = 0;
if (ieee80211_is_data(hdr->frame_control)) {
int hdrlen = ieee80211_hdrlen(hdr->frame_control);
int ivlen = 0, icvlen = 4; /* also FCS */
pkt = alloc_skb(pktsize, GFP_KERNEL);
if (!pkt)
goto report;
skb_put_data(pkt, pktdata, hdrlen);
pktdata += hdrlen;
pktsize -= hdrlen;
if (ieee80211_has_protected(hdr->frame_control)) {
/*
* This is unlocked and using gtk_i(c)vlen,
* but since everything is under RTNL still
* that's not really a problem - changing
* it would be difficult.
*/
if (is_multicast_ether_addr(hdr->addr1)) {
ivlen = mvm->gtk_ivlen;
icvlen += mvm->gtk_icvlen;
} else {
ivlen = mvm->ptk_ivlen;
icvlen += mvm->ptk_icvlen;
}
}
/* if truncated, FCS/ICV is (partially) gone */
if (truncated >= icvlen) {
icvlen = 0;
truncated -= icvlen;
} else {
icvlen -= truncated;
truncated = 0;
}
pktsize -= ivlen + icvlen;
pktdata += ivlen;
skb_put_data(pkt, pktdata, pktsize);
if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
goto report;
wakeup.packet = pkt->data;
wakeup.packet_present_len = pkt->len;
wakeup.packet_len = pkt->len - truncated;
wakeup.packet_80211 = false;
} else {
int fcslen = 4;
if (truncated >= 4) {
truncated -= 4;
fcslen = 0;
} else {
fcslen -= truncated;
truncated = 0;
}
pktsize -= fcslen;
wakeup.packet = status->wake_packet;
wakeup.packet_present_len = pktsize;
wakeup.packet_len = pktlen - truncated;
wakeup.packet_80211 = true;
}
}
report:
ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
kfree_skb(pkt);
}
static void iwl_mvm_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
{
u64 pn = le64_to_cpu(le_pn);
seq->ccmp.pn[0] = pn >> 40;
seq->ccmp.pn[1] = pn >> 32;
seq->ccmp.pn[2] = pn >> 24;
seq->ccmp.pn[3] = pn >> 16;
seq->ccmp.pn[4] = pn >> 8;
seq->ccmp.pn[5] = pn;
}
static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
struct ieee80211_key_seq *seq)
{
iwl_mvm_le64_to_aes_seq(sc->pn, seq);
}
static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq)
{
u64 pn = le64_to_cpu(le_pn);
seq->tkip.iv16 = (u16)pn;
seq->tkip.iv32 = (u32)(pn >> 16);
}
static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
struct ieee80211_key_seq *seq)
{
seq->tkip.iv32 = le32_to_cpu(sc->iv32);
seq->tkip.iv16 = le16_to_cpu(sc->iv16);
}
static void iwl_mvm_set_key_rx_seq_tids(struct ieee80211_key_conf *key,
struct ieee80211_key_seq *seq)
{
int tid;
for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++)
ieee80211_set_key_rx_seq(key, tid, &seq[tid]);
}
static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm,
struct iwl_wowlan_status_data *status,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key)
{
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_key_pn *ptk_pn;
int tid;
iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq);
if (!iwl_mvm_has_new_rx_api(mvm))
return;
rcu_read_lock();
ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]);
if (WARN_ON(!ptk_pn)) {
rcu_read_unlock();
return;
}
for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
int i;
for (i = 1; i < mvm->trans->num_rx_queues; i++)
memcpy(ptk_pn->q[i].pn[tid],
status->ptk.aes.seq[tid].ccmp.pn,
IEEE80211_CCMP_PN_LEN);
}
rcu_read_unlock();
}
static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status,
union iwl_all_tsc_rsc *sc)
{
int i;
BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
/* GTK RX counters */
for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i],
&status->gtk_seq[0].tkip.seq[i]);
iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i],
&status->gtk_seq[0].aes.seq[i]);
}
status->gtk_seq[0].valid = true;
status->gtk_seq[0].key_id = -1;
/* PTK TX counter */
status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) |
((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16);
status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn);
/* PTK RX counters */
for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i],
&status->ptk.tkip.seq[i]);
iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i],
&status->ptk.aes.seq[i]);
}
}
static void
iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status,
struct iwl_wowlan_all_rsc_tsc_v5 *sc,
unsigned int idx, unsigned int key_id)
{
int tid;
for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid],
&status->gtk_seq[idx].tkip.seq[tid]);
iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid],
&status->gtk_seq[idx].aes.seq[tid]);
}
status->gtk_seq[idx].valid = true;
status->gtk_seq[idx].key_id = key_id;
}
static void
iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status,
struct iwl_wowlan_all_rsc_tsc_v5 *sc)
{
int i, tid;
BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT);
BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC);
BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq));
/* GTK RX counters */
for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) {
u8 entry = sc->mcast_key_id_map[i];
if (entry < ARRAY_SIZE(sc->mcast_rsc))
iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc,
entry, i);
}
/* PTK TX counters not needed, assigned in device */
/* PTK RX counters */
for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid],
&status->ptk.tkip.seq[tid]);
iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid],
&status->ptk.aes.seq[tid]);
}
}
static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key,
struct iwl_wowlan_status_data *status,
int idx)
{
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq);
break;
case WLAN_CIPHER_SUITE_TKIP:
iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq);
break;
default:
WARN_ON(1);
}
}
static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
struct iwl_wowlan_status_data *status,
bool installed)
{
int i;
for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) {
if (!status->gtk_seq[i].valid)
continue;
/* Handle the case where we know the key ID */
if (status->gtk_seq[i].key_id == key->keyidx) {
s8 new_key_id = -1;
if (status->num_of_gtk_rekeys)
new_key_id = status->gtk.flags &
IWL_WOWLAN_GTK_IDX_MASK;
/* Don't install a new key's value to an old key */
if (new_key_id != key->keyidx)
iwl_mvm_set_key_rx_seq_idx(key, status, i);
continue;
}
/* handle the case where we didn't, last key only */
if (status->gtk_seq[i].key_id == -1 &&
(!status->num_of_gtk_rekeys || installed))
iwl_mvm_set_key_rx_seq_idx(key, status, i);
}
}
struct iwl_mvm_d3_gtk_iter_data {
struct iwl_mvm *mvm;
struct iwl_wowlan_status_data *status;
void *last_gtk;
u32 cipher;
bool find_phase, unhandled_cipher;
int num_keys;
};
static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *_data)
{
struct iwl_mvm_d3_gtk_iter_data *data = _data;
struct iwl_wowlan_status_data *status = data->status;
if (data->unhandled_cipher)
return;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
/* ignore WEP completely, nothing to do */
return;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
case WLAN_CIPHER_SUITE_TKIP:
/* we support these */
break;
default:
/* everything else (even CMAC for MFP) - disconnect from AP */
data->unhandled_cipher = true;
return;
}
data->num_keys++;
/*
* pairwise key - update sequence counters only;
* note that this assumes no TDLS sessions are active
*/
if (sta) {
if (data->find_phase)
return;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn);
iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key);
break;
case WLAN_CIPHER_SUITE_TKIP:
atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn);
iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq);
break;
}
/* that's it for this key */
return;
}
if (data->find_phase) {
data->last_gtk = key;
data->cipher = key->cipher;
return;
}
if (data->status->num_of_gtk_rekeys)
ieee80211_remove_key(key);
if (data->last_gtk == key)
iwl_mvm_set_key_rx_seq(key, data->status, false);
}
static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_wowlan_status_data *status)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mvm_d3_gtk_iter_data gtkdata = {
.mvm = mvm,
.status = status,
};
u32 disconnection_reasons =
IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
if (!status || !vif->bss_conf.bssid)
return false;
if (status->wakeup_reasons & disconnection_reasons)
return false;
/* find last GTK that we used initially, if any */
gtkdata.find_phase = true;
ieee80211_iter_keys(mvm->hw, vif,
iwl_mvm_d3_update_keys, &gtkdata);
/* not trying to keep connections with MFP/unhandled ciphers */
if (gtkdata.unhandled_cipher)
return false;
if (!gtkdata.num_keys)
goto out;
if (!gtkdata.last_gtk)
return false;
/*
* invalidate all other GTKs that might still exist and update
* the one that we used
*/
gtkdata.find_phase = false;
ieee80211_iter_keys(mvm->hw, vif,
iwl_mvm_d3_update_keys, &gtkdata);
IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n",
status->num_of_gtk_rekeys);
if (status->num_of_gtk_rekeys) {
struct ieee80211_key_conf *key;
struct {
struct ieee80211_key_conf conf;
u8 key[32];
} conf = {
.conf.cipher = gtkdata.cipher,
.conf.keyidx =
status->gtk.flags & IWL_WOWLAN_GTK_IDX_MASK,
};
__be64 replay_ctr;
IWL_DEBUG_WOWLAN(mvm,
"Received from FW GTK cipher %d, key index %d\n",
conf.conf.cipher, conf.conf.keyidx);
BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP);
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP);
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256);
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP);
BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key));
memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key));
switch (gtkdata.cipher) {
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
conf.conf.keylen = WLAN_KEY_LEN_CCMP;
break;
case WLAN_CIPHER_SUITE_GCMP_256:
conf.conf.keylen = WLAN_KEY_LEN_GCMP_256;
break;
case WLAN_CIPHER_SUITE_TKIP:
conf.conf.keylen = WLAN_KEY_LEN_TKIP;
break;
}
key = ieee80211_gtk_rekey_add(vif, &conf.conf);
if (IS_ERR(key))
return false;
iwl_mvm_set_key_rx_seq(key, status, true);
replay_ctr = cpu_to_be64(status->replay_ctr);
ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
(void *)&replay_ctr, GFP_KERNEL);
}
out:
if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
WOWLAN_GET_STATUSES, 0) < 10) {
mvmvif->seqno_valid = true;
/* +0x10 because the set API expects next-to-use, not last-used */
mvmvif->seqno = status->non_qos_seq_ctr + 0x10;
}
return true;
}
static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status,
struct iwl_wowlan_gtk_status_v2 *data)
{
BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key));
BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
sizeof(data->tkip_mic_key) >
sizeof(status->gtk.key));
status->gtk.len = data->key_len;
status->gtk.flags = data->key_flags;
memcpy(status->gtk.key, data->key, sizeof(data->key));
/* if it's as long as the TKIP encryption key, copy MIC key */
if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
data->tkip_mic_key, sizeof(data->tkip_mic_key));
}
static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status,
struct iwl_wowlan_gtk_status_v3 *data)
{
/* The parts we need are identical in v2 and v3 */
#define CHECK(_f) do { \
BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) != \
offsetof(struct iwl_wowlan_gtk_status_v3, _f)); \
BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\
offsetofend(struct iwl_wowlan_gtk_status_v3, _f)); \
} while (0)
CHECK(key);
CHECK(key_len);
CHECK(key_flags);
CHECK(tkip_mic_key);
#undef CHECK
iwl_mvm_convert_gtk_v2(status, (void *)data);
}
static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status,
struct iwl_wowlan_igtk_status *data)
{
const u8 *ipn = data->ipn;
BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key));
status->igtk.len = data->key_len;
status->igtk.flags = data->key_flags;
memcpy(status->igtk.key, data->key, sizeof(data->key));
status->igtk.ipn = ((u64)ipn[5] << 0) |
((u64)ipn[4] << 8) |
((u64)ipn[3] << 16) |
((u64)ipn[2] << 24) |
((u64)ipn[1] << 32) |
((u64)ipn[0] << 40);
}
static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm,
struct iwl_wowlan_info_notif *data,
struct iwl_wowlan_status_data *status,
u32 len)
{
u32 i;
if (!data) {
IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n");
status = NULL;
return;
}
if (len < sizeof(*data)) {
IWL_ERR(mvm, "Invalid WoWLAN info notification!\n");
status = NULL;
return;
}
iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc);
iwl_mvm_convert_gtk_v3(status, &data->gtk[0]);
iwl_mvm_convert_igtk(status, &data->igtk[0]);
status->replay_ctr = le64_to_cpu(data->replay_ctr);
status->pattern_number = le16_to_cpu(data->pattern_number);
for (i = 0; i < IWL_MAX_TID_COUNT; i++)
status->qos_seq_ctr[i] =
le16_to_cpu(data->qos_seq_ctr[i]);
status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons);
status->num_of_gtk_rekeys =
le32_to_cpu(data->num_of_gtk_rekeys);
status->received_beacons = le32_to_cpu(data->received_beacons);
status->tid_tear_down = data->tid_tear_down;
}
/* Occasionally, templates would be nice. This is one of those times ... */
#define iwl_mvm_parse_wowlan_status_common(_ver) \
static struct iwl_wowlan_status_data * \
iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
struct iwl_wowlan_status_ ##_ver *data,\
int len) \
{ \
struct iwl_wowlan_status_data *status; \
int data_size, i; \
\
if (len < sizeof(*data)) { \
IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
return NULL; \
} \
\
data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \
if (len != sizeof(*data) + data_size) { \
IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \
return NULL; \
} \
\
status = kzalloc(sizeof(*status), GFP_KERNEL); \
if (!status) \
return NULL; \
\
/* copy all the common fields */ \
status->replay_ctr = le64_to_cpu(data->replay_ctr); \
status->pattern_number = le16_to_cpu(data->pattern_number); \
status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \
for (i = 0; i < 8; i++) \
status->qos_seq_ctr[i] = \
le16_to_cpu(data->qos_seq_ctr[i]); \
status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \
status->num_of_gtk_rekeys = \
le32_to_cpu(data->num_of_gtk_rekeys); \
status->received_beacons = le32_to_cpu(data->received_beacons); \
status->wake_packet_length = \
le32_to_cpu(data->wake_packet_length); \
status->wake_packet_bufsize = \
le32_to_cpu(data->wake_packet_bufsize); \
if (status->wake_packet_bufsize) { \
status->wake_packet = \
kmemdup(data->wake_packet, \
status->wake_packet_bufsize, \
GFP_KERNEL); \
if (!status->wake_packet) { \
kfree(status); \
return NULL; \
} \
} else { \
status->wake_packet = NULL; \
} \
\
return status; \
}
iwl_mvm_parse_wowlan_status_common(v6)
iwl_mvm_parse_wowlan_status_common(v7)
iwl_mvm_parse_wowlan_status_common(v9)
iwl_mvm_parse_wowlan_status_common(v12)
static struct iwl_wowlan_status_data *
iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id)
{
struct iwl_wowlan_status_data *status;
struct iwl_wowlan_get_status_cmd get_status_cmd = {
.sta_id = cpu_to_le32(sta_id),
};
struct iwl_host_cmd cmd = {
.id = WOWLAN_GET_STATUSES,
.flags = CMD_WANT_SKB,
.data = { &get_status_cmd, },
.len = { sizeof(get_status_cmd), },
};
int ret, len;
u8 notif_ver;
u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id,
IWL_FW_CMD_VER_UNKNOWN);
if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
cmd.len[0] = 0;
lockdep_assert_held(&mvm->mutex);
ret = iwl_mvm_send_cmd(mvm, &cmd);
if (ret) {
IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret);
return ERR_PTR(ret);
}
len = iwl_rx_packet_payload_len(cmd.resp_pkt);
/* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */
notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP,
WOWLAN_GET_STATUSES, 0);
if (!notif_ver)
notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
WOWLAN_GET_STATUSES, 7);
if (!fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) {
struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data;
status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len);
if (!status)
goto out_free_resp;
BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) >
sizeof(status->gtk.key));
BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY +
sizeof(v6->gtk.tkip_mic_key) >
sizeof(status->gtk.key));
/* copy GTK info to the right place */
memcpy(status->gtk.key, v6->gtk.decrypt_key,
sizeof(v6->gtk.decrypt_key));
memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
v6->gtk.tkip_mic_key,
sizeof(v6->gtk.tkip_mic_key));
iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc);
/* hardcode the key length to 16 since v6 only supports 16 */
status->gtk.len = 16;
/*
* The key index only uses 2 bits (values 0 to 3) and
* we always set bit 7 which means this is the
* currently used key.
*/
status->gtk.flags = v6->gtk.key_index | BIT(7);
} else if (notif_ver == 7) {
struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data;
status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len);
if (!status)
goto out_free_resp;
iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc);
iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]);
iwl_mvm_convert_igtk(status, &v7->igtk[0]);
} else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) {
struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data;
/* these three command versions have same layout and size, the
* difference is only in a few not used (reserved) fields.
*/
status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len);
if (!status)
goto out_free_resp;
iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc);
iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]);
iwl_mvm_convert_igtk(status, &v9->igtk[0]);
status->tid_tear_down = v9->tid_tear_down;
} else if (notif_ver == 12) {
struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data;
status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len);
if (!status)
goto out_free_resp;
iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc);
iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]);
iwl_mvm_convert_igtk(status, &v12->igtk[0]);
status->tid_tear_down = v12->tid_tear_down;
} else {
IWL_ERR(mvm,
"Firmware advertises unknown WoWLAN status response %d!\n",
notif_ver);
status = NULL;
}
out_free_resp:
iwl_free_resp(&cmd);
return status;
}
/* releases the MVM mutex */
static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_wowlan_status_data *status)
{
int i;
bool keep;
struct iwl_mvm_sta *mvm_ap_sta;
if (!status)
goto out_unlock;
IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n",
status->wakeup_reasons);
/* still at hard-coded place 0 for D3 image */
mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
if (!mvm_ap_sta)
goto out_unlock;
for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
u16 seq = status->qos_seq_ctr[i];
/* firmware stores last-used value, we store next value */
seq += 0x10;
mvm_ap_sta->tid_data[i].seq_number = seq;
}
if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
i = mvm->offload_tid;
iwl_trans_set_q_ptrs(mvm->trans,
mvm_ap_sta->tid_data[i].txq_id,
mvm_ap_sta->tid_data[i].seq_number >> 4);
}
/* now we have all the data we need, unlock to avoid mac80211 issues */
mutex_unlock(&mvm->mutex);
iwl_mvm_report_wakeup_reasons(mvm, vif, status);
keep = iwl_mvm_setup_connection_keep(mvm, vif, status);
return keep;
out_unlock:
mutex_unlock(&mvm->mutex);
return false;
}
#define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \
IWL_SCAN_MAX_PROFILES)
struct iwl_mvm_nd_results {
u32 matched_profiles;
u8 matches[ND_QUERY_BUF_LEN];
};
static int
iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
struct iwl_mvm_nd_results *results)
{
struct iwl_scan_offload_match_info *query;
struct iwl_host_cmd cmd = {
.id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
.flags = CMD_WANT_SKB,
};
int ret, len;
size_t query_len, matches_len;
int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
ret = iwl_mvm_send_cmd(mvm, &cmd);
if (ret) {
IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
return ret;
}
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
query_len = sizeof(struct iwl_scan_offload_match_info);
matches_len = sizeof(struct iwl_scan_offload_profile_match) *
max_profiles;
} else {
query_len = sizeof(struct iwl_scan_offload_profiles_query_v1);
matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) *
max_profiles;
}
len = iwl_rx_packet_payload_len(cmd.resp_pkt);
if (len < query_len) {
IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
ret = -EIO;
goto out_free_resp;
}
query = (void *)cmd.resp_pkt->data;
results->matched_profiles = le32_to_cpu(query->matched_profiles);
memcpy(results->matches, query->matches, matches_len);
#ifdef CONFIG_IWLWIFI_DEBUGFS
mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
#endif
out_free_resp:
iwl_free_resp(&cmd);
return ret;
}
static int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm,
struct iwl_mvm_nd_results *results,
int idx)
{
int n_chans = 0, i;
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
struct iwl_scan_offload_profile_match *matches =
(void *)results->matches;
for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++)
n_chans += hweight8(matches[idx].matching_channels[i]);
} else {
struct iwl_scan_offload_profile_match_v1 *matches =
(void *)results->matches;
for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++)
n_chans += hweight8(matches[idx].matching_channels[i]);
}
return n_chans;
}
static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm,
struct iwl_mvm_nd_results *results,
struct cfg80211_wowlan_nd_match *match,
int idx)
{
int i;
if (fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) {
struct iwl_scan_offload_profile_match *matches =
(void *)results->matches;
for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++)
if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
match->channels[match->n_channels++] =
mvm->nd_channels[i]->center_freq;
} else {
struct iwl_scan_offload_profile_match_v1 *matches =
(void *)results->matches;
for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++)
if (matches[idx].matching_channels[i / 8] & (BIT(i % 8)))
match->channels[match->n_channels++] =
mvm->nd_channels[i]->center_freq;
}
}
/**
* enum iwl_d3_notif - d3 notifications
* @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received
* @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received
* @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received
* @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received
* @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received
*/
enum iwl_d3_notif {
IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2),
IWL_D3_ND_MATCH_INFO = BIT(3),
IWL_D3_NOTIF_D3_END_NOTIF = BIT(4)
};
/* manage d3 resume data */
struct iwl_d3_data {
struct iwl_wowlan_status_data *status;
bool test;
u32 d3_end_flags;
u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */
u32 notif_received; /* bitmap - see &enum iwl_d3_notif */
struct iwl_mvm_nd_results *nd_results;
bool nd_results_valid;
};
static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_d3_data *d3_data)
{
struct cfg80211_wowlan_nd_info *net_detect = NULL;
struct cfg80211_wowlan_wakeup wakeup = {
.pattern_idx = -1,
};
struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
unsigned long matched_profiles;
u32 reasons = 0;
int i, n_matches, ret;
if (WARN_ON(!d3_data || !d3_data->status))
goto out;
reasons = d3_data->status->wakeup_reasons;
if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
wakeup.rfkill_release = true;
if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
goto out;
if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
WOWLAN_INFO_NOTIFICATION, 0)) {
IWL_INFO(mvm, "Query FW for ND results\n");
ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results);
} else {
IWL_INFO(mvm, "Notification based ND results\n");
ret = d3_data->nd_results_valid ? 0 : -1;
}
if (ret || !d3_data->nd_results->matched_profiles) {
wakeup_report = NULL;
goto out;
}
matched_profiles = d3_data->nd_results->matched_profiles;
if (mvm->n_nd_match_sets) {
n_matches = hweight_long(matched_profiles);
} else {
IWL_ERR(mvm, "no net detect match information available\n");
n_matches = 0;
}
net_detect = kzalloc(struct_size(net_detect, matches, n_matches),
GFP_KERNEL);
if (!net_detect || !n_matches)
goto out_report_nd;
for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
struct cfg80211_wowlan_nd_match *match;
int idx, n_channels = 0;
n_channels = iwl_mvm_query_num_match_chans(mvm,
d3_data->nd_results,
i);
match = kzalloc(struct_size(match, channels, n_channels),
GFP_KERNEL);
if (!match)
goto out_report_nd;
net_detect->matches[net_detect->n_matches++] = match;
/* We inverted the order of the SSIDs in the scan
* request, so invert the index here.
*/
idx = mvm->n_nd_match_sets - i - 1;
match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
match->ssid.ssid_len);
if (mvm->n_nd_channels < n_channels)
continue;
iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i);
}
out_report_nd:
wakeup.net_detect = net_detect;
out:
iwl_mvm_free_nd(mvm);
mutex_unlock(&mvm->mutex);
ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
if (net_detect) {
for (i = 0; i < net_detect->n_matches; i++)
kfree(net_detect->matches[i]);
kfree(net_detect);
}
}
static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
/* skip the one we keep connection on */
if (data == vif)
return;
if (vif->type == NL80211_IFTYPE_STATION)
ieee80211_resume_disconnect(vif);
}
static bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id)
{
struct error_table_start {
/* cf. struct iwl_error_event_table */
u32 valid;
__le32 err_id;
} err_info;
if (!base)
return false;
iwl_trans_read_mem_bytes(trans, base,
&err_info, sizeof(err_info));
if (err_info.valid && err_id)
*err_id = le32_to_cpu(err_info.err_id);
return !!err_info.valid;
}
static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
u32 err_id;
/* check for lmac1 error */
if (iwl_mvm_rt_status(mvm->trans,
mvm->trans->dbg.lmac_error_event_table[0],
&err_id)) {
if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
struct cfg80211_wowlan_wakeup wakeup = {
.rfkill_release = true,
};
ieee80211_report_wowlan_wakeup(vif, &wakeup,
GFP_KERNEL);
}
return true;
}
/* check if we have lmac2 set and check for error */
if (iwl_mvm_rt_status(mvm->trans,
mvm->trans->dbg.lmac_error_event_table[1], NULL))
return true;
/* check for umac error */
if (iwl_mvm_rt_status(mvm->trans,
mvm->trans->dbg.umac_error_event_table, NULL))
return true;
return false;
}
/*
* This function assumes:
* 1. The mutex is already held.
* 2. The callee functions unlock the mutex.
*/
static bool
iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_d3_data *d3_data)
{
lockdep_assert_held(&mvm->mutex);
/* if FW uses status notification, status shouldn't be NULL here */
if (!d3_data->status) {
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : mvmvif->ap_sta_id;
d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id);
}
if (mvm->net_detect) {
iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data);
} else {
bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif,
d3_data->status);
#ifdef CONFIG_IWLWIFI_DEBUGFS
if (keep)
mvm->keep_vif = vif;
#endif
return keep;
}
return false;
}
#define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \
IWL_WOWLAN_WAKEUP_BY_PATTERN | \
IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\
IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\
IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\
IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD)
static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm,
struct iwl_wowlan_wake_pkt_notif *notif,
struct iwl_wowlan_status_data *status,
u32 len)
{
u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length);
if (len < sizeof(*notif)) {
IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n");
return -EIO;
}
if (WARN_ON(!status)) {
IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n");
return -EIO;
}
if (WARN_ON(!(status->wakeup_reasons &
IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) {
IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n",
status->wakeup_reasons);
return -EIO;
}
data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet);
/* data_size got the padding from the notification, remove it. */
if (packet_len < data_size)
data_size = packet_len;
status->wake_packet = kmemdup(notif->wake_packet, data_size,
GFP_ATOMIC);
if (!status->wake_packet)
return -ENOMEM;
status->wake_packet_length = packet_len;
status->wake_packet_bufsize = data_size;
return 0;
}
static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm,
struct iwl_d3_data *d3_data,
struct iwl_scan_offload_match_info *notif,
u32 len)
{
struct iwl_wowlan_status_data *status = d3_data->status;
struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm);
struct iwl_mvm_nd_results *results = d3_data->nd_results;
size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) *
iwl_umac_scan_get_max_profiles(mvm->fw);
if (IS_ERR_OR_NULL(vif))
return;
if (len < sizeof(struct iwl_scan_offload_match_info)) {
IWL_ERR(mvm, "Invalid scan match info notification\n");
return;
}
if (!mvm->net_detect) {
IWL_ERR(mvm, "Unexpected scan match info notification\n");
return;
}
if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
IWL_ERR(mvm,
"Ignore scan match info notification: no reason\n");
return;
}
#ifdef CONFIG_IWLWIFI_DEBUGFS
mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done);
#endif
results->matched_profiles = le32_to_cpu(notif->matched_profiles);
IWL_INFO(mvm, "number of matched profiles=%u\n",
results->matched_profiles);
if (results->matched_profiles) {
memcpy(results->matches, notif->matches, matches_len);
d3_data->nd_results_valid = TRUE;
}
/* no scan should be active at this point */
mvm->scan_status = 0;
for (i = 0; i < mvm->max_scans; i++)
mvm->scan_uid_status[i] = 0;
}
static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{
struct iwl_mvm *mvm =
container_of(notif_wait, struct iwl_mvm, notif_wait);
struct iwl_d3_data *d3_data = data;
u32 len;
int ret;
int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw,
PROT_OFFLOAD_GROUP,
WOWLAN_INFO_NOTIFICATION,
IWL_FW_CMD_VER_UNKNOWN);
switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
struct iwl_wowlan_info_notif *notif;
if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) {
/* We might get two notifications due to dual bss */
IWL_DEBUG_WOWLAN(mvm,
"Got additional wowlan info notification\n");
break;
}
if (wowlan_info_ver < 2) {
struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data;
notif = kmemdup(notif_v1, sizeof(*notif), GFP_ATOMIC);
if (!notif)
return false;
notif->tid_tear_down = notif_v1->tid_tear_down;
notif->station_id = notif_v1->station_id;
memset_after(notif, 0, station_id);
} else {
notif = (void *)pkt->data;
}
d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO;
len = iwl_rx_packet_payload_len(pkt);
iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
len);
if (wowlan_info_ver < 2)
kfree(notif);
if (d3_data->status &&
d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
/* We are supposed to get also wake packet notif */
d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
break;
}
case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
/* We shouldn't get two wake packet notifications */
IWL_ERR(mvm,
"Got additional wowlan wake packet notification\n");
} else {
d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
len = iwl_rx_packet_payload_len(pkt);
ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif,
d3_data->status,
len);
if (ret)
IWL_ERR(mvm,
"Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n");
}
break;
}
case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) {
IWL_ERR(mvm,
"Got additional netdetect match info\n");
break;
}
d3_data->notif_received |= IWL_D3_ND_MATCH_INFO;
/* explicitly set this in the 'expected' as well */
d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO;
len = iwl_rx_packet_payload_len(pkt);
iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len);
break;
}
case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data;
d3_data->d3_end_flags = __le32_to_cpu(notif->flags);
d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF;
break;
}
default:
WARN_ON(1);
}
return d3_data->notif_received == d3_data->notif_expected;
}
static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test)
{
int ret;
enum iwl_d3_status d3_status;
struct iwl_host_cmd cmd = {
.id = D0I3_END_CMD,
.flags = CMD_WANT_SKB | CMD_SEND_IN_D3,
};
bool reset = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset);
if (ret)
return ret;
if (d3_status != IWL_D3_STATUS_ALIVE) {
IWL_INFO(mvm, "Device was reset during suspend\n");
return -ENOENT;
}
/*
* We should trigger resume flow using command only for 22000 family
* AX210 and above don't need the command since they have
* the doorbell interrupt.
*/
if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 &&
fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) {
ret = iwl_mvm_send_cmd(mvm, &cmd);
if (ret < 0)
IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n",
ret);
}
return ret;
}
#define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5)
static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
struct iwl_d3_data *d3_data)
{
static const u16 d3_resume_notif[] = {
WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION),
WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF),
WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
};
struct iwl_notification_wait wait_d3_notif;
int ret;
iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif,
d3_resume_notif, ARRAY_SIZE(d3_resume_notif),
iwl_mvm_wait_d3_notif, d3_data);
ret = iwl_mvm_resume_firmware(mvm, d3_data->test);
if (ret) {
iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif);
return ret;
}
return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif,
IWL_MVM_D3_NOTIF_TIMEOUT);
}
static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm)
{
return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
WOWLAN_INFO_NOTIFICATION, 0) &&
iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
WOWLAN_WAKE_PKT_NOTIFICATION, 0) &&
iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
D3_END_NOTIFICATION, 0);
}
static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
{
struct ieee80211_vif *vif = NULL;
int ret = 1;
struct iwl_mvm_nd_results results = {};
struct iwl_d3_data d3_data = {
.test = test,
.notif_expected =
IWL_D3_NOTIF_WOWLAN_INFO |
IWL_D3_NOTIF_D3_END_NOTIF,
.nd_results_valid = false,
.nd_results = &results,
};
bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_D0I3_END_FIRST);
bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm);
bool keep = false;
mutex_lock(&mvm->mutex);
mvm->last_reset_or_resume_time_jiffies = jiffies;
/* get the BSS vif pointer again */
vif = iwl_mvm_get_bss_vif(mvm);
if (IS_ERR_OR_NULL(vif))
goto err;
iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
if (iwl_mvm_check_rt_status(mvm, vif)) {
set_bit(STATUS_FW_ERROR, &mvm->trans->status);
iwl_mvm_dump_nic_error_log(mvm);
iwl_dbg_tlv_time_point(&mvm->fwrt,
IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL);
iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
false, 0);
ret = 1;
goto err;
}
if (resume_notif_based) {
d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL);
if (!d3_data.status) {
IWL_ERR(mvm, "Failed to allocate wowlan status\n");
ret = -ENOMEM;
goto err;
}
ret = iwl_mvm_d3_notif_wait(mvm, &d3_data);
if (ret)
goto err;
} else {
ret = iwl_mvm_resume_firmware(mvm, test);
if (ret < 0)
goto err;
}
/* after the successful handshake, we're out of D3 */
mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
/* when reset is required we can't send these following commands */
if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)
goto query_wakeup_reasons;
/*
* Query the current location and source from the D3 firmware so we
* can play it back when we re-intiailize the D0 firmware
*/
iwl_mvm_update_changed_regdom(mvm);
/* Re-configure PPAG settings */
iwl_mvm_ppag_send_cmd(mvm);
if (!unified_image)
/* Re-configure default SAR profile */
iwl_mvm_sar_select_profile(mvm, 1, 1);
if (mvm->net_detect && unified_image) {
/* If this is a non-unified image, we restart the FW,
* so no need to stop the netdetect scan. If that
* fails, continue and try to get the wake-up reasons,
* but trigger a HW restart by keeping a failure code
* in ret.
*/
ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
false);
}
query_wakeup_reasons:
keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data);
/* has unlocked the mutex, so skip that */
goto out;
err:
mutex_unlock(&mvm->mutex);
out:
if (d3_data.status)
kfree(d3_data.status->wake_packet);
kfree(d3_data.status);
iwl_mvm_free_nd(mvm);
if (!d3_data.test && !mvm->net_detect)
ieee80211_iterate_active_interfaces_mtx(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_d3_disconnect_iter,
keep ? vif : NULL);
clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status);
/* no need to reset the device in unified images, if successful */
if (unified_image && !ret) {
/* nothing else to do if we already sent D0I3_END_CMD */
if (d0i3_first)
return 0;
if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP,
D3_END_NOTIFICATION, 0)) {
ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL);
if (!ret)
return 0;
} else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) {
return 0;
}
}
/*
* Reconfigure the device in one of the following cases:
* 1. We are not using a unified image
* 2. We are using a unified image but had an error while exiting D3
*/
set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
/* regardless of what happened, we're now out of D3 */
mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
return 1;
}
int iwl_mvm_resume(struct ieee80211_hw *hw)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
int ret;
ret = __iwl_mvm_resume(mvm, false);
iwl_mvm_resume_tcm(mvm);
iwl_fw_runtime_resume(&mvm->fwrt);
return ret;
}
void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
{
struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
device_set_wakeup_enable(mvm->trans->dev, enabled);
}
#ifdef CONFIG_IWLWIFI_DEBUGFS
static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
{
struct iwl_mvm *mvm = inode->i_private;
int err;
if (mvm->d3_test_active)
return -EBUSY;
file->private_data = inode->i_private;
iwl_mvm_pause_tcm(mvm, true);
iwl_fw_runtime_suspend(&mvm->fwrt);
/* start pseudo D3 */
rtnl_lock();
wiphy_lock(mvm->hw->wiphy);
err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
wiphy_unlock(mvm->hw->wiphy);
rtnl_unlock();
if (err > 0)
err = -EINVAL;
if (err)
return err;
mvm->d3_test_active = true;
mvm->keep_vif = NULL;
return 0;
}
static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_mvm *mvm = file->private_data;
u32 pme_asserted;
while (true) {
/* read pme_ptr if available */
if (mvm->d3_test_pme_ptr) {
pme_asserted = iwl_trans_read_mem32(mvm->trans,
mvm->d3_test_pme_ptr);
if (pme_asserted)
break;
}
if (msleep_interruptible(100))
break;
}
return 0;
}
static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
/* skip the one we keep connection on */
if (_data == vif)
return;
if (vif->type == NL80211_IFTYPE_STATION)
ieee80211_connection_loss(vif);
}
static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
{
struct iwl_mvm *mvm = inode->i_private;
bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
mvm->d3_test_active = false;
iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt);
rtnl_lock();
wiphy_lock(mvm->hw->wiphy);
__iwl_mvm_resume(mvm, true);
wiphy_unlock(mvm->hw->wiphy);
rtnl_unlock();
iwl_mvm_resume_tcm(mvm);
iwl_fw_runtime_resume(&mvm->fwrt);
iwl_abort_notification_waits(&mvm->notif_wait);
if (!unified_image) {
int remaining_time = 10;
ieee80211_restart_hw(mvm->hw);
/* wait for restart and disconnect all interfaces */
while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
remaining_time > 0) {
remaining_time--;
msleep(1000);
}
if (remaining_time == 0)
IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
}
ieee80211_iterate_active_interfaces_atomic(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
return 0;
}
const struct file_operations iwl_dbgfs_d3_test_ops = {
.llseek = no_llseek,
.open = iwl_mvm_d3_test_open,
.read = iwl_mvm_d3_test_read,
.release = iwl_mvm_d3_test_release,
};
#endif