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wow.c
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wow.c
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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright(c) 2019-2022 Realtek Corporation
*/
#include "cam.h"
#include "core.h"
#include "debug.h"
#include "fw.h"
#include "mac.h"
#include "phy.h"
#include "ps.h"
#include "reg.h"
#include "util.h"
#include "wow.h"
#include <linux/version.h>
void rtw89_wow_parse_akm(struct rtw89_dev *rtwdev, struct sk_buff *skb)
{
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
const u8 *rsn, *ies = mgmt->u.assoc_req.variable;
struct rtw89_rsn_ie *rsn_ie;
rsn = cfg80211_find_ie(WLAN_EID_RSN, ies, skb->len);
if (!rsn)
return;
rsn_ie = (struct rtw89_rsn_ie *)rsn;
rtw_wow->akm = rsn_ie->akm_cipher_suite.type;
}
static const struct rtw89_cipher_info rtw89_cipher_info_defs[] = {
{WLAN_CIPHER_SUITE_WEP40, .fw_alg = 1, .len = WLAN_KEY_LEN_WEP40,},
{WLAN_CIPHER_SUITE_WEP104, .fw_alg = 2, .len = WLAN_KEY_LEN_WEP104,},
{WLAN_CIPHER_SUITE_TKIP, .fw_alg = 3, .len = WLAN_KEY_LEN_TKIP,},
{WLAN_CIPHER_SUITE_CCMP, .fw_alg = 6, .len = WLAN_KEY_LEN_CCMP,},
{WLAN_CIPHER_SUITE_GCMP, .fw_alg = 8, .len = WLAN_KEY_LEN_GCMP,},
{WLAN_CIPHER_SUITE_CCMP_256, .fw_alg = 7, .len = WLAN_KEY_LEN_CCMP_256,},
{WLAN_CIPHER_SUITE_GCMP_256, .fw_alg = 23, .len = WLAN_KEY_LEN_GCMP_256,},
{WLAN_CIPHER_SUITE_AES_CMAC, .fw_alg = 32, .len = WLAN_KEY_LEN_AES_CMAC,},
};
static const
struct rtw89_cipher_info *rtw89_cipher_alg_recognize(u32 cipher)
{
const struct rtw89_cipher_info *cipher_info_defs;
int i;
for (i = 0; i < ARRAY_SIZE(rtw89_cipher_info_defs); i++) {
cipher_info_defs = &rtw89_cipher_info_defs[i];
if (cipher_info_defs->cipher == cipher)
return cipher_info_defs;
}
return NULL;
}
static int _pn_to_iv(struct rtw89_dev *rtwdev, struct ieee80211_key_conf *key,
u8 *iv, u64 pn, u8 key_idx)
{
switch (key->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
iv[0] = u64_get_bits(pn, RTW89_KEY_PN_1);
iv[1] = (u64_get_bits(pn, RTW89_KEY_PN_1) | 0x20) & 0x7f;
iv[2] = u64_get_bits(pn, RTW89_KEY_PN_0);
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_CCMP_256:
case WLAN_CIPHER_SUITE_GCMP_256:
iv[0] = u64_get_bits(pn, RTW89_KEY_PN_0);
iv[1] = u64_get_bits(pn, RTW89_KEY_PN_1);
iv[2] = 0;
break;
default:
return -EINVAL;
}
iv[3] = BIT(5) | ((key_idx & 0x3) << 6);
iv[4] = u64_get_bits(pn, RTW89_KEY_PN_2);
iv[5] = u64_get_bits(pn, RTW89_KEY_PN_3);
iv[6] = u64_get_bits(pn, RTW89_KEY_PN_4);
iv[7] = u64_get_bits(pn, RTW89_KEY_PN_5);
return 0;
}
static int rtw89_rx_pn_to_iv(struct rtw89_dev *rtwdev,
struct ieee80211_key_conf *key,
u8 *iv)
{
struct ieee80211_key_seq seq;
int err;
u64 pn;
ieee80211_get_key_rx_seq(key, 0, &seq);
/* seq.ccmp.pn[] is BE order array */
pn = u64_encode_bits(seq.ccmp.pn[0], RTW89_KEY_PN_5) |
u64_encode_bits(seq.ccmp.pn[1], RTW89_KEY_PN_4) |
u64_encode_bits(seq.ccmp.pn[2], RTW89_KEY_PN_3) |
u64_encode_bits(seq.ccmp.pn[3], RTW89_KEY_PN_2) |
u64_encode_bits(seq.ccmp.pn[4], RTW89_KEY_PN_1) |
u64_encode_bits(seq.ccmp.pn[5], RTW89_KEY_PN_0);
err = _pn_to_iv(rtwdev, key, iv, pn, key->keyidx);
if (err)
return err;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "%s key %d pn-%llx to iv-%*ph\n",
__func__, key->keyidx, pn, 8, iv);
return 0;
}
static int rtw89_tx_pn_to_iv(struct rtw89_dev *rtwdev,
struct ieee80211_key_conf *key,
u8 *iv)
{
int err;
u64 pn;
pn = atomic64_inc_return(&key->tx_pn);
err = _pn_to_iv(rtwdev, key, iv, pn, key->keyidx);
if (err)
return err;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "%s key %d pn-%llx to iv-%*ph\n",
__func__, key->keyidx, pn, 8, iv);
return 0;
}
static int _iv_to_pn(struct rtw89_dev *rtwdev, u8 *iv, u64 *pn, u8 *key_id,
struct ieee80211_key_conf *key)
{
switch (key->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
*pn = u64_encode_bits(iv[2], RTW89_KEY_PN_0) |
u64_encode_bits(iv[0], RTW89_KEY_PN_1);
break;
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_CCMP_256:
case WLAN_CIPHER_SUITE_GCMP_256:
*pn = u64_encode_bits(iv[0], RTW89_KEY_PN_0) |
u64_encode_bits(iv[1], RTW89_KEY_PN_1);
break;
default:
return -EINVAL;
}
*pn |= u64_encode_bits(iv[4], RTW89_KEY_PN_2) |
u64_encode_bits(iv[5], RTW89_KEY_PN_3) |
u64_encode_bits(iv[6], RTW89_KEY_PN_4) |
u64_encode_bits(iv[7], RTW89_KEY_PN_5);
if (key_id)
*key_id = *(iv + 3) >> 6;
return 0;
}
static int rtw89_rx_iv_to_pn(struct rtw89_dev *rtwdev,
struct ieee80211_key_conf *key,
u8 *iv)
{
struct ieee80211_key_seq seq;
int err;
u64 pn;
err = _iv_to_pn(rtwdev, iv, &pn, NULL, key);
if (err)
return err;
/* seq.ccmp.pn[] is BE order array */
seq.ccmp.pn[0] = u64_get_bits(pn, RTW89_KEY_PN_5);
seq.ccmp.pn[1] = u64_get_bits(pn, RTW89_KEY_PN_4);
seq.ccmp.pn[2] = u64_get_bits(pn, RTW89_KEY_PN_3);
seq.ccmp.pn[3] = u64_get_bits(pn, RTW89_KEY_PN_2);
seq.ccmp.pn[4] = u64_get_bits(pn, RTW89_KEY_PN_1);
seq.ccmp.pn[5] = u64_get_bits(pn, RTW89_KEY_PN_0);
ieee80211_set_key_rx_seq(key, 0, &seq);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "%s key %d iv-%*ph to pn-%*ph\n",
__func__, key->keyidx, 8, iv, 6, seq.ccmp.pn);
return 0;
}
static int rtw89_tx_iv_to_pn(struct rtw89_dev *rtwdev,
struct ieee80211_key_conf *key,
u8 *iv)
{
int err;
u64 pn;
err = _iv_to_pn(rtwdev, iv, &pn, NULL, key);
if (err)
return err;
atomic64_set(&key->tx_pn, pn);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "%s key %d iv-%*ph to pn-%llx\n",
__func__, key->keyidx, 8, iv, pn);
return 0;
}
static int rtw89_rx_pn_get_pmf(struct rtw89_dev *rtwdev,
struct ieee80211_key_conf *key,
struct rtw89_wow_gtk_info *gtk_info)
{
struct ieee80211_key_seq seq;
u64 pn;
if (key->keyidx == 4)
memcpy(gtk_info->igtk[0], key->key, key->keylen);
else if (key->keyidx == 5)
memcpy(gtk_info->igtk[1], key->key, key->keylen);
else
return -EINVAL;
ieee80211_get_key_rx_seq(key, 0, &seq);
/* seq.ccmp.pn[] is BE order array */
pn = u64_encode_bits(seq.ccmp.pn[0], RTW89_KEY_PN_5) |
u64_encode_bits(seq.ccmp.pn[1], RTW89_KEY_PN_4) |
u64_encode_bits(seq.ccmp.pn[2], RTW89_KEY_PN_3) |
u64_encode_bits(seq.ccmp.pn[3], RTW89_KEY_PN_2) |
u64_encode_bits(seq.ccmp.pn[4], RTW89_KEY_PN_1) |
u64_encode_bits(seq.ccmp.pn[5], RTW89_KEY_PN_0);
gtk_info->ipn = cpu_to_le64(pn);
gtk_info->igtk_keyid = cpu_to_le32(key->keyidx);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "%s key %d pn-%llx\n",
__func__, key->keyidx, pn);
return 0;
}
static int rtw89_rx_pn_set_pmf(struct rtw89_dev *rtwdev,
struct ieee80211_key_conf *key,
u64 pn)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_aoac_report *aoac_rpt = &rtw_wow->aoac_rpt;
struct ieee80211_key_seq seq;
if (key->keyidx != aoac_rpt->igtk_key_id)
return 0;
/* seq.ccmp.pn[] is BE order array */
seq.ccmp.pn[0] = u64_get_bits(pn, RTW89_KEY_PN_5);
seq.ccmp.pn[1] = u64_get_bits(pn, RTW89_KEY_PN_4);
seq.ccmp.pn[2] = u64_get_bits(pn, RTW89_KEY_PN_3);
seq.ccmp.pn[3] = u64_get_bits(pn, RTW89_KEY_PN_2);
seq.ccmp.pn[4] = u64_get_bits(pn, RTW89_KEY_PN_1);
seq.ccmp.pn[5] = u64_get_bits(pn, RTW89_KEY_PN_0);
ieee80211_set_key_rx_seq(key, 0, &seq);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "%s key %d pn-%*ph\n",
__func__, key->keyidx, 6, seq.ccmp.pn);
return 0;
}
static void rtw89_wow_get_key_info_iter(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *data)
{
struct rtw89_dev *rtwdev = hw->priv;
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_key_info *key_info = &rtw_wow->key_info;
struct rtw89_wow_gtk_info *gtk_info = &rtw_wow->gtk_info;
const struct rtw89_cipher_info *cipher_info;
bool *err = data;
int ret;
cipher_info = rtw89_cipher_alg_recognize(key->cipher);
switch (key->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_CCMP_256:
case WLAN_CIPHER_SUITE_GCMP_256:
if (sta) {
ret = rtw89_tx_pn_to_iv(rtwdev, key,
key_info->ptk_tx_iv);
if (ret)
goto err;
ret = rtw89_rx_pn_to_iv(rtwdev, key,
key_info->ptk_rx_iv);
if (ret)
goto err;
rtw_wow->ptk_alg = cipher_info->fw_alg;
rtw_wow->ptk_keyidx = key->keyidx;
} else {
ret = rtw89_rx_pn_to_iv(rtwdev, key,
key_info->gtk_rx_iv[key->keyidx]);
if (ret)
goto err;
rtw_wow->gtk_alg = cipher_info->fw_alg;
key_info->gtk_keyidx = key->keyidx;
}
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
ret = rtw89_rx_pn_get_pmf(rtwdev, key, gtk_info);
if (ret)
goto err;
break;
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
/* WEP only set group key in mac80211, but fw need to set
* both of pairwise key and group key.
*/
rtw_wow->ptk_alg = cipher_info->fw_alg;
rtw_wow->ptk_keyidx = key->keyidx;
rtw_wow->gtk_alg = cipher_info->fw_alg;
key_info->gtk_keyidx = key->keyidx;
break;
default:
rtw89_debug(rtwdev, RTW89_DBG_WOW, "unsupport cipher %x\n",
key->cipher);
goto err;
}
return;
err:
*err = true;
}
static void rtw89_wow_set_key_info_iter(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *data)
{
struct rtw89_dev *rtwdev = hw->priv;
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_aoac_report *aoac_rpt = &rtw_wow->aoac_rpt;
struct rtw89_set_key_info_iter_data *iter_data = data;
bool update_tx_key_info = iter_data->rx_ready;
int ret;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_TKIP:
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_CCMP_256:
case WLAN_CIPHER_SUITE_GCMP_256:
if (sta && !update_tx_key_info) {
ret = rtw89_rx_iv_to_pn(rtwdev, key,
aoac_rpt->ptk_rx_iv);
if (ret)
goto err;
}
if (sta && update_tx_key_info) {
ret = rtw89_tx_iv_to_pn(rtwdev, key,
aoac_rpt->ptk_tx_iv);
if (ret)
goto err;
}
if (!sta && !update_tx_key_info) {
ret = rtw89_rx_iv_to_pn(rtwdev, key,
aoac_rpt->gtk_rx_iv[key->keyidx]);
if (ret)
goto err;
}
if (!sta && update_tx_key_info && aoac_rpt->rekey_ok)
iter_data->gtk_cipher = key->cipher;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
if (update_tx_key_info) {
if (aoac_rpt->rekey_ok)
iter_data->igtk_cipher = key->cipher;
} else {
ret = rtw89_rx_pn_set_pmf(rtwdev, key,
aoac_rpt->igtk_ipn);
if (ret)
goto err;
}
break;
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
break;
default:
rtw89_debug(rtwdev, RTW89_DBG_WOW, "unsupport cipher %x\n",
key->cipher);
goto err;
}
return;
err:
iter_data->error = true;
}
static void rtw89_wow_key_clear(struct rtw89_dev *rtwdev)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
memset(&rtw_wow->aoac_rpt, 0, sizeof(rtw_wow->aoac_rpt));
memset(&rtw_wow->gtk_info, 0, sizeof(rtw_wow->gtk_info));
memset(&rtw_wow->key_info, 0, sizeof(rtw_wow->key_info));
rtw_wow->ptk_alg = 0;
rtw_wow->gtk_alg = 0;
}
static void rtw89_wow_construct_key_info(struct rtw89_dev *rtwdev)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_key_info *key_info = &rtw_wow->key_info;
struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
bool err = false;
rcu_read_lock();
ieee80211_iter_keys_rcu(rtwdev->hw, wow_vif,
rtw89_wow_get_key_info_iter, &err);
rcu_read_unlock();
if (err) {
rtw89_wow_key_clear(rtwdev);
return;
}
key_info->valid_check = RTW89_WOW_VALID_CHECK;
key_info->symbol_check_en = RTW89_WOW_SYMBOL_CHK_PTK |
RTW89_WOW_SYMBOL_CHK_GTK;
}
static void rtw89_wow_debug_aoac_rpt(struct rtw89_dev *rtwdev)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_aoac_report *aoac_rpt = &rtw_wow->aoac_rpt;
if (!rtw89_debug_is_enabled(rtwdev, RTW89_DBG_WOW))
return;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] rpt_ver = %d\n",
aoac_rpt->rpt_ver);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] sec_type = %d\n",
aoac_rpt->sec_type);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] key_idx = %d\n",
aoac_rpt->key_idx);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] pattern_idx = %d\n",
aoac_rpt->pattern_idx);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] rekey_ok = %d\n",
aoac_rpt->rekey_ok);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] ptk_tx_iv = %*ph\n",
8, aoac_rpt->ptk_tx_iv);
rtw89_debug(rtwdev, RTW89_DBG_WOW,
"[aoac_rpt] eapol_key_replay_count = %*ph\n",
8, aoac_rpt->eapol_key_replay_count);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] ptk_rx_iv = %*ph\n",
8, aoac_rpt->ptk_rx_iv);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] gtk_rx_iv[0] = %*ph\n",
8, aoac_rpt->gtk_rx_iv[0]);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] gtk_rx_iv[1] = %*ph\n",
8, aoac_rpt->gtk_rx_iv[1]);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] gtk_rx_iv[2] = %*ph\n",
8, aoac_rpt->gtk_rx_iv[2]);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] gtk_rx_iv[3] = %*ph\n",
8, aoac_rpt->gtk_rx_iv[3]);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] igtk_key_id = %llu\n",
aoac_rpt->igtk_key_id);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] igtk_ipn = %llu\n",
aoac_rpt->igtk_ipn);
rtw89_debug(rtwdev, RTW89_DBG_WOW, "[aoac_rpt] igtk = %*ph\n",
32, aoac_rpt->igtk);
}
static int rtw89_wow_get_aoac_rpt_reg(struct rtw89_dev *rtwdev)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_aoac_report *aoac_rpt = &rtw_wow->aoac_rpt;
struct rtw89_mac_c2h_info c2h_info = {};
struct rtw89_mac_h2c_info h2c_info = {};
u8 igtk_ipn[8];
u8 key_idx;
int ret;
h2c_info.id = RTW89_FWCMD_H2CREG_FUNC_AOAC_RPT_1;
h2c_info.content_len = 2;
ret = rtw89_fw_msg_reg(rtwdev, &h2c_info, &c2h_info);
if (ret)
return ret;
aoac_rpt->key_idx =
u32_get_bits(c2h_info.u.c2hreg[0], RTW89_C2HREG_AOAC_RPT_1_W0_KEY_IDX);
key_idx = aoac_rpt->key_idx;
aoac_rpt->gtk_rx_iv[key_idx][0] =
u32_get_bits(c2h_info.u.c2hreg[1], RTW89_C2HREG_AOAC_RPT_1_W1_IV_0);
aoac_rpt->gtk_rx_iv[key_idx][1] =
u32_get_bits(c2h_info.u.c2hreg[1], RTW89_C2HREG_AOAC_RPT_1_W1_IV_1);
aoac_rpt->gtk_rx_iv[key_idx][2] =
u32_get_bits(c2h_info.u.c2hreg[1], RTW89_C2HREG_AOAC_RPT_1_W1_IV_2);
aoac_rpt->gtk_rx_iv[key_idx][3] =
u32_get_bits(c2h_info.u.c2hreg[1], RTW89_C2HREG_AOAC_RPT_1_W1_IV_3);
aoac_rpt->gtk_rx_iv[key_idx][4] =
u32_get_bits(c2h_info.u.c2hreg[2], RTW89_C2HREG_AOAC_RPT_1_W2_IV_4);
aoac_rpt->gtk_rx_iv[key_idx][5] =
u32_get_bits(c2h_info.u.c2hreg[2], RTW89_C2HREG_AOAC_RPT_1_W2_IV_5);
aoac_rpt->gtk_rx_iv[key_idx][6] =
u32_get_bits(c2h_info.u.c2hreg[2], RTW89_C2HREG_AOAC_RPT_1_W2_IV_6);
aoac_rpt->gtk_rx_iv[key_idx][7] =
u32_get_bits(c2h_info.u.c2hreg[2], RTW89_C2HREG_AOAC_RPT_1_W2_IV_7);
aoac_rpt->ptk_rx_iv[0] =
u32_get_bits(c2h_info.u.c2hreg[3], RTW89_C2HREG_AOAC_RPT_1_W3_PTK_IV_0);
aoac_rpt->ptk_rx_iv[1] =
u32_get_bits(c2h_info.u.c2hreg[3], RTW89_C2HREG_AOAC_RPT_1_W3_PTK_IV_1);
aoac_rpt->ptk_rx_iv[2] =
u32_get_bits(c2h_info.u.c2hreg[3], RTW89_C2HREG_AOAC_RPT_1_W3_PTK_IV_2);
aoac_rpt->ptk_rx_iv[3] =
u32_get_bits(c2h_info.u.c2hreg[3], RTW89_C2HREG_AOAC_RPT_1_W3_PTK_IV_3);
h2c_info.id = RTW89_FWCMD_H2CREG_FUNC_AOAC_RPT_2;
h2c_info.content_len = 2;
ret = rtw89_fw_msg_reg(rtwdev, &h2c_info, &c2h_info);
if (ret)
return ret;
aoac_rpt->ptk_rx_iv[4] =
u32_get_bits(c2h_info.u.c2hreg[0], RTW89_C2HREG_AOAC_RPT_2_W0_PTK_IV_4);
aoac_rpt->ptk_rx_iv[5] =
u32_get_bits(c2h_info.u.c2hreg[0], RTW89_C2HREG_AOAC_RPT_2_W0_PTK_IV_5);
aoac_rpt->ptk_rx_iv[6] =
u32_get_bits(c2h_info.u.c2hreg[1], RTW89_C2HREG_AOAC_RPT_2_W1_PTK_IV_6);
aoac_rpt->ptk_rx_iv[7] =
u32_get_bits(c2h_info.u.c2hreg[1], RTW89_C2HREG_AOAC_RPT_2_W1_PTK_IV_7);
igtk_ipn[0] =
u32_get_bits(c2h_info.u.c2hreg[1], RTW89_C2HREG_AOAC_RPT_2_W1_IGTK_IPN_IV_0);
igtk_ipn[1] =
u32_get_bits(c2h_info.u.c2hreg[1], RTW89_C2HREG_AOAC_RPT_2_W1_IGTK_IPN_IV_1);
igtk_ipn[2] =
u32_get_bits(c2h_info.u.c2hreg[2], RTW89_C2HREG_AOAC_RPT_2_W2_IGTK_IPN_IV_2);
igtk_ipn[3] =
u32_get_bits(c2h_info.u.c2hreg[2], RTW89_C2HREG_AOAC_RPT_2_W2_IGTK_IPN_IV_3);
igtk_ipn[4] =
u32_get_bits(c2h_info.u.c2hreg[2], RTW89_C2HREG_AOAC_RPT_2_W2_IGTK_IPN_IV_4);
igtk_ipn[5] =
u32_get_bits(c2h_info.u.c2hreg[2], RTW89_C2HREG_AOAC_RPT_2_W2_IGTK_IPN_IV_5);
igtk_ipn[6] =
u32_get_bits(c2h_info.u.c2hreg[3], RTW89_C2HREG_AOAC_RPT_2_W3_IGTK_IPN_IV_6);
igtk_ipn[7] =
u32_get_bits(c2h_info.u.c2hreg[3], RTW89_C2HREG_AOAC_RPT_2_W3_IGTK_IPN_IV_7);
aoac_rpt->igtk_ipn = u64_encode_bits(igtk_ipn[0], RTW89_IGTK_IPN_0) |
u64_encode_bits(igtk_ipn[1], RTW89_IGTK_IPN_1) |
u64_encode_bits(igtk_ipn[2], RTW89_IGTK_IPN_2) |
u64_encode_bits(igtk_ipn[3], RTW89_IGTK_IPN_3) |
u64_encode_bits(igtk_ipn[4], RTW89_IGTK_IPN_4) |
u64_encode_bits(igtk_ipn[5], RTW89_IGTK_IPN_5) |
u64_encode_bits(igtk_ipn[6], RTW89_IGTK_IPN_6) |
u64_encode_bits(igtk_ipn[7], RTW89_IGTK_IPN_7);
return 0;
}
static int rtw89_wow_get_aoac_rpt(struct rtw89_dev *rtwdev, bool rx_ready)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
int ret;
if (!rtw_wow->ptk_alg)
return -EPERM;
if (!rx_ready) {
ret = rtw89_wow_get_aoac_rpt_reg(rtwdev);
if (ret) {
rtw89_err(rtwdev, "wow: failed to get aoac rpt by reg\n");
return ret;
}
} else {
ret = rtw89_fw_h2c_wow_request_aoac(rtwdev);
if (ret) {
rtw89_err(rtwdev, "wow: failed to get aoac rpt by pkt\n");
return ret;
}
}
rtw89_wow_debug_aoac_rpt(rtwdev);
return 0;
}
static struct ieee80211_key_conf *rtw89_wow_gtk_rekey(struct rtw89_dev *rtwdev,
u32 cipher, u8 keyidx, u8 *gtk)
{
struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
const struct rtw89_cipher_info *cipher_info;
struct ieee80211_key_conf *rekey_conf;
struct ieee80211_key_conf *key;
u8 sz;
cipher_info = rtw89_cipher_alg_recognize(cipher);
sz = struct_size(rekey_conf, key, cipher_info->len);
rekey_conf = kmalloc(sz, GFP_KERNEL);
if (!rekey_conf)
return NULL;
rekey_conf->cipher = cipher;
rekey_conf->keyidx = keyidx;
rekey_conf->keylen = cipher_info->len;
memcpy(rekey_conf->key, gtk,
flex_array_size(rekey_conf, key, cipher_info->len));
/* ieee80211_gtk_rekey_add() will call set_key(), therefore we
* need to unlock mutex
*/
mutex_unlock(&rtwdev->mutex);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 9, 0)
key = ieee80211_gtk_rekey_add(wow_vif, rekey_conf, -1);
#else
key = ieee80211_gtk_rekey_add(wow_vif, rekey_conf);
#endif
mutex_lock(&rtwdev->mutex);
kfree(rekey_conf);
if (IS_ERR(key)) {
rtw89_err(rtwdev, "ieee80211_gtk_rekey_add failed\n");
return NULL;
}
return key;
}
static void rtw89_wow_update_key_info(struct rtw89_dev *rtwdev, bool rx_ready)
{
struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_aoac_report *aoac_rpt = &rtw_wow->aoac_rpt;
struct rtw89_set_key_info_iter_data data = {.error = false,
.rx_ready = rx_ready};
struct ieee80211_key_conf *key;
rcu_read_lock();
ieee80211_iter_keys_rcu(rtwdev->hw, wow_vif,
rtw89_wow_set_key_info_iter, &data);
rcu_read_unlock();
if (data.error) {
rtw89_debug(rtwdev, RTW89_DBG_WOW, "%s error\n", __func__);
return;
}
if (!data.gtk_cipher)
return;
key = rtw89_wow_gtk_rekey(rtwdev, data.gtk_cipher, aoac_rpt->key_idx,
aoac_rpt->gtk);
if (!key)
return;
rtw89_rx_iv_to_pn(rtwdev, key,
aoac_rpt->gtk_rx_iv[key->keyidx]);
if (!data.igtk_cipher)
return;
key = rtw89_wow_gtk_rekey(rtwdev, data.igtk_cipher, aoac_rpt->igtk_key_id,
aoac_rpt->igtk);
if (!key)
return;
rtw89_rx_pn_set_pmf(rtwdev, key, aoac_rpt->igtk_ipn);
ieee80211_gtk_rekey_notify(wow_vif, wow_vif->bss_conf.bssid,
aoac_rpt->eapol_key_replay_count,
GFP_KERNEL);
}
static void rtw89_wow_leave_deep_ps(struct rtw89_dev *rtwdev)
{
__rtw89_leave_ps_mode(rtwdev);
}
static void rtw89_wow_enter_deep_ps(struct rtw89_dev *rtwdev)
{
struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
struct rtw89_vif *rtwvif = (struct rtw89_vif *)wow_vif->drv_priv;
__rtw89_enter_ps_mode(rtwdev, rtwvif);
}
static void rtw89_wow_enter_lps(struct rtw89_dev *rtwdev)
{
struct ieee80211_vif *wow_vif = rtwdev->wow.wow_vif;
struct rtw89_vif *rtwvif = (struct rtw89_vif *)wow_vif->drv_priv;
rtw89_enter_lps(rtwdev, rtwvif, false);
}
static void rtw89_wow_leave_lps(struct rtw89_dev *rtwdev)
{
rtw89_leave_lps(rtwdev);
}
static int rtw89_wow_config_mac(struct rtw89_dev *rtwdev, bool enable_wow)
{
const struct rtw89_mac_gen_def *mac = rtwdev->chip->mac_def;
return mac->wow_config_mac(rtwdev, enable_wow);
}
static void rtw89_wow_set_rx_filter(struct rtw89_dev *rtwdev, bool enable)
{
const struct rtw89_mac_gen_def *mac = rtwdev->chip->mac_def;
enum rtw89_mac_fwd_target fwd_target = enable ?
RTW89_FWD_DONT_CARE :
RTW89_FWD_TO_HOST;
mac->typ_fltr_opt(rtwdev, RTW89_MGNT, fwd_target, RTW89_MAC_0);
mac->typ_fltr_opt(rtwdev, RTW89_CTRL, fwd_target, RTW89_MAC_0);
mac->typ_fltr_opt(rtwdev, RTW89_DATA, fwd_target, RTW89_MAC_0);
}
static void rtw89_wow_show_wakeup_reason(struct rtw89_dev *rtwdev)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_aoac_report *aoac_rpt = &rtw_wow->aoac_rpt;
u32 wow_reason_reg = rtwdev->chip->wow_reason_reg;
struct cfg80211_wowlan_nd_info nd_info;
struct cfg80211_wowlan_wakeup wakeup = {
.pattern_idx = -1,
};
u8 reason;
reason = rtw89_read8(rtwdev, wow_reason_reg);
switch (reason) {
case RTW89_WOW_RSN_RX_DEAUTH:
wakeup.disconnect = true;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "WOW: Rx deauth\n");
break;
case RTW89_WOW_RSN_DISCONNECT:
wakeup.disconnect = true;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "WOW: AP is off\n");
break;
case RTW89_WOW_RSN_RX_MAGIC_PKT:
wakeup.magic_pkt = true;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "WOW: Rx magic packet\n");
break;
case RTW89_WOW_RSN_RX_GTK_REKEY:
wakeup.gtk_rekey_failure = true;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "WOW: Rx gtk rekey\n");
break;
case RTW89_WOW_RSN_RX_PATTERN_MATCH:
wakeup.pattern_idx = aoac_rpt->pattern_idx;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "WOW: Rx pattern match packet\n");
break;
case RTW89_WOW_RSN_RX_NLO:
/* Current firmware and driver don't report ssid index.
* Use 0 for n_matches based on its comment.
*/
nd_info.n_matches = 0;
wakeup.net_detect = &nd_info;
rtw89_debug(rtwdev, RTW89_DBG_WOW, "Rx NLO\n");
break;
default:
rtw89_warn(rtwdev, "Unknown wakeup reason %x\n", reason);
ieee80211_report_wowlan_wakeup(rtwdev->wow.wow_vif, NULL,
GFP_KERNEL);
return;
}
ieee80211_report_wowlan_wakeup(rtwdev->wow.wow_vif, &wakeup,
GFP_KERNEL);
}
static void rtw89_wow_vif_iter(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct ieee80211_vif *vif = rtwvif_to_vif(rtwvif);
/* Current wowlan function support setting of only one STATION vif.
* So when one suitable vif is found, stop the iteration.
*/
if (rtw_wow->wow_vif || vif->type != NL80211_IFTYPE_STATION)
return;
switch (rtwvif->net_type) {
case RTW89_NET_TYPE_INFRA:
rtw_wow->wow_vif = vif;
break;
case RTW89_NET_TYPE_NO_LINK:
default:
break;
}
}
static u16 __rtw89_cal_crc16(u8 data, u16 crc)
{
u8 shift_in, data_bit;
u8 crc_bit4, crc_bit11, crc_bit15;
u16 crc_result;
int index;
for (index = 0; index < 8; index++) {
crc_bit15 = crc & BIT(15) ? 1 : 0;
data_bit = data & BIT(index) ? 1 : 0;
shift_in = crc_bit15 ^ data_bit;
crc_result = crc << 1;
if (shift_in == 0)
crc_result &= ~BIT(0);
else
crc_result |= BIT(0);
crc_bit11 = (crc & BIT(11) ? 1 : 0) ^ shift_in;
if (crc_bit11 == 0)
crc_result &= ~BIT(12);
else
crc_result |= BIT(12);
crc_bit4 = (crc & BIT(4) ? 1 : 0) ^ shift_in;
if (crc_bit4 == 0)
crc_result &= ~BIT(5);
else
crc_result |= BIT(5);
crc = crc_result;
}
return crc;
}
static u16 rtw89_calc_crc(u8 *pdata, int length)
{
u16 crc = 0xffff;
int i;
for (i = 0; i < length; i++)
crc = __rtw89_cal_crc16(pdata[i], crc);
/* get 1' complement */
return ~crc;
}
static int rtw89_wow_pattern_get_type(struct rtw89_vif *rtwvif,
struct rtw89_wow_cam_info *rtw_pattern,
const u8 *pattern, u8 da_mask)
{
u8 da[ETH_ALEN];
ether_addr_copy_mask(da, pattern, da_mask);
/* Each pattern is divided into different kinds by DA address
* a. DA is broadcast address: set bc = 0;
* b. DA is multicast address: set mc = 0
* c. DA is unicast address same as dev's mac address: set uc = 0
* d. DA is unmasked. Also called wildcard type: set uc = bc = mc = 0
* e. Others is invalid type.
*/
if (is_broadcast_ether_addr(da))
rtw_pattern->bc = true;
else if (is_multicast_ether_addr(da))
rtw_pattern->mc = true;
else if (ether_addr_equal(da, rtwvif->mac_addr) &&
da_mask == GENMASK(5, 0))
rtw_pattern->uc = true;
else if (!da_mask) /*da_mask == 0 mean wildcard*/
return 0;
else
return -EPERM;
return 0;
}
static int rtw89_wow_pattern_generate(struct rtw89_dev *rtwdev,
struct rtw89_vif *rtwvif,
const struct cfg80211_pkt_pattern *pkt_pattern,
struct rtw89_wow_cam_info *rtw_pattern)
{
u8 mask_hw[RTW89_MAX_PATTERN_MASK_SIZE * 4] = {0};
u8 content[RTW89_MAX_PATTERN_SIZE] = {0};
const u8 *mask;
const u8 *pattern;
u8 mask_len;
u16 count;
u32 len;
int i, ret;
pattern = pkt_pattern->pattern;
len = pkt_pattern->pattern_len;
mask = pkt_pattern->mask;
mask_len = DIV_ROUND_UP(len, 8);
memset(rtw_pattern, 0, sizeof(*rtw_pattern));
ret = rtw89_wow_pattern_get_type(rtwvif, rtw_pattern, pattern,
mask[0] & GENMASK(5, 0));
if (ret)
return ret;
/* translate mask from os to mask for hw
* pattern from OS uses 'ethenet frame', like this:
* | 6 | 6 | 2 | 20 | Variable | 4 |
* |--------+--------+------+-----------+------------+-----|
* | 802.3 Mac Header | IP Header | TCP Packet | FCS |
* | DA | SA | Type |
*
* BUT, packet catched by our HW is in '802.11 frame', begin from LLC
* | 24 or 30 | 6 | 2 | 20 | Variable | 4 |
* |-------------------+--------+------+-----------+------------+-----|
* | 802.11 MAC Header | LLC | IP Header | TCP Packet | FCS |
* | Others | Tpye |
*
* Therefore, we need translate mask_from_OS to mask_to_hw.
* We should left-shift mask by 6 bits, then set the new bit[0~5] = 0,
* because new mask[0~5] means 'SA', but our HW packet begins from LLC,
* bit[0~5] corresponds to first 6 Bytes in LLC, they just don't match.
*/
/* Shift 6 bits */
for (i = 0; i < mask_len - 1; i++) {
mask_hw[i] = u8_get_bits(mask[i], GENMASK(7, 6)) |
u8_get_bits(mask[i + 1], GENMASK(5, 0)) << 2;
}
mask_hw[i] = u8_get_bits(mask[i], GENMASK(7, 6));
/* Set bit 0-5 to zero */
mask_hw[0] &= ~GENMASK(5, 0);
memcpy(rtw_pattern->mask, mask_hw, sizeof(rtw_pattern->mask));
/* To get the wake up pattern from the mask.
* We do not count first 12 bits which means
* DA[6] and SA[6] in the pattern to match HW design.
*/
count = 0;
for (i = 12; i < len; i++) {
if ((mask[i / 8] >> (i % 8)) & 0x01) {
content[count] = pattern[i];
count++;
}
}
rtw_pattern->crc = rtw89_calc_crc(content, count);
return 0;
}
static int rtw89_wow_parse_patterns(struct rtw89_dev *rtwdev,
struct rtw89_vif *rtwvif,
struct cfg80211_wowlan *wowlan)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_cam_info *rtw_pattern = rtw_wow->patterns;
int i;
int ret;
if (!wowlan->n_patterns || !wowlan->patterns)
return 0;
for (i = 0; i < wowlan->n_patterns; i++) {
rtw_pattern = &rtw_wow->patterns[i];
ret = rtw89_wow_pattern_generate(rtwdev, rtwvif,
&wowlan->patterns[i],
rtw_pattern);
if (ret) {
rtw89_err(rtwdev, "failed to generate pattern(%d)\n", i);
rtw_wow->pattern_cnt = 0;
return ret;
}
rtw_pattern->r_w = true;
rtw_pattern->idx = i;
rtw_pattern->negative_pattern_match = false;
rtw_pattern->skip_mac_hdr = true;
rtw_pattern->valid = true;
}
rtw_wow->pattern_cnt = wowlan->n_patterns;
return 0;
}
static void rtw89_wow_pattern_clear_cam(struct rtw89_dev *rtwdev)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_cam_info *rtw_pattern = rtw_wow->patterns;
int i = 0;
for (i = 0; i < rtw_wow->pattern_cnt; i++) {
rtw_pattern = &rtw_wow->patterns[i];
rtw_pattern->valid = false;
rtw89_fw_wow_cam_update(rtwdev, rtw_pattern);
}
}
static void rtw89_wow_pattern_write(struct rtw89_dev *rtwdev)
{
struct rtw89_wow_param *rtw_wow = &rtwdev->wow;
struct rtw89_wow_cam_info *rtw_pattern = rtw_wow->patterns;
int i;