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gbmc / linux / aca701c61822d996f38b328d38d3b5d62a9f49b5 / . / drivers / net / wireless / intel / iwlwifi / mld / d3.c
blob: ed0a0f76f1c51b89c0ecd09b1c7c05455b9e4f9b [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright (C) 2024-2025 Intel Corporation
*/
#include "mld.h"
#include "d3.h"
#include "power.h"
#include "hcmd.h"
#include "iface.h"
#include "mcc.h"
#include "sta.h"
#include "mlo.h"
#include "fw/api/d3.h"
#include "fw/api/offload.h"
#include "fw/api/sta.h"
#include "fw/dbg.h"
#include <net/ipv6.h>
#include <net/addrconf.h>
#include <linux/bitops.h>
/**
* enum iwl_mld_d3_notif - d3 notifications
* @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF is expected/was received
* @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF is expected/was received
* @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF is expected/was received
* @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF is expected/was received
* @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF is expected/was received
*/
enum iwl_mld_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)
};
struct iwl_mld_resume_key_iter_data {
struct iwl_mld *mld;
struct iwl_mld_wowlan_status *wowlan_status;
u32 num_keys, gtk_cipher, igtk_cipher, bigtk_cipher;
bool unhandled_cipher;
};
struct iwl_mld_suspend_key_iter_data {
struct iwl_wowlan_rsc_tsc_params_cmd *rsc;
bool have_rsc;
int gtks;
int found_gtk_idx[4];
__le32 gtk_cipher;
__le32 igtk_cipher;
__le32 bigtk_cipher;
};
struct iwl_mld_mcast_key_data {
u8 key[WOWLAN_KEY_MAX_SIZE];
u8 len;
u8 flags;
u8 id;
union {
struct {
struct ieee80211_key_seq aes_seq[IWL_MAX_TID_COUNT];
struct ieee80211_key_seq tkip_seq[IWL_MAX_TID_COUNT];
} gtk;
struct {
struct ieee80211_key_seq cmac_gmac_seq;
} igtk_bigtk;
};
};
/**
* struct iwl_mld_wowlan_status - contains wowlan status data from
* all wowlan notifications
* @wakeup_reasons: wakeup reasons, see &enum iwl_wowlan_wakeup_reason
* @replay_ctr: GTK rekey replay counter
* @pattern_number: number of the matched patterns on packets
* @last_qos_seq: QoS sequence counter of offloaded tid
* @num_of_gtk_rekeys: number of GTK rekeys during D3
* @tid_offloaded_tx: tid used by the firmware to transmit data packets
* while in wowlan
* @wake_packet: wakeup packet received
* @wake_packet_length: wake packet length
* @wake_packet_bufsize: wake packet bufsize
* @gtk: data of the last two used gtk's by the FW upon resume
* @igtk: data of the last used igtk by the FW upon resume
* @bigtk: data of the last two used gtk's by the FW upon resume
* @ptk: last seq numbers per tid passed by the FW,
* holds both in tkip and aes formats
*/
struct iwl_mld_wowlan_status {
u32 wakeup_reasons;
u64 replay_ctr;
u16 pattern_number;
u16 last_qos_seq;
u32 num_of_gtk_rekeys;
u8 tid_offloaded_tx;
u8 *wake_packet;
u32 wake_packet_length;
u32 wake_packet_bufsize;
struct iwl_mld_mcast_key_data gtk[WOWLAN_GTK_KEYS_NUM];
struct iwl_mld_mcast_key_data igtk;
struct iwl_mld_mcast_key_data bigtk[WOWLAN_BIGTK_KEYS_NUM];
struct {
struct ieee80211_key_seq aes_seq[IWL_MAX_TID_COUNT];
struct ieee80211_key_seq tkip_seq[IWL_MAX_TID_COUNT];
} ptk;
};
#define NETDETECT_QUERY_BUF_LEN \
(sizeof(struct iwl_scan_offload_profile_match) * \
IWL_SCAN_MAX_PROFILES_V2)
/**
* struct iwl_mld_netdetect_res - contains netdetect results from
* match_info_notif
* @matched_profiles: bitmap of matched profiles, referencing the
* matches passed in the scan offload request
* @matches: array of match information, one for each match
*/
struct iwl_mld_netdetect_res {
u32 matched_profiles;
u8 matches[NETDETECT_QUERY_BUF_LEN];
};
/**
* struct iwl_mld_resume_data - d3 resume flow data
* @notifs_expected: bitmap of expected notifications from fw,
* see &enum iwl_mld_d3_notif
* @notifs_received: bitmap of received notifications from fw,
* see &enum iwl_mld_d3_notif
* @d3_end_flags: bitmap of flags from d3_end_notif
* @notif_handling_err: error handling one of the resume notifications
* @wowlan_status: wowlan status data from all wowlan notifications
* @netdetect_res: contains netdetect results from match_info_notif
*/
struct iwl_mld_resume_data {
u32 notifs_expected;
u32 notifs_received;
u32 d3_end_flags;
bool notif_handling_err;
struct iwl_mld_wowlan_status *wowlan_status;
struct iwl_mld_netdetect_res *netdetect_res;
};
#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)
#define IWL_WOWLAN_OFFLOAD_TID 0
void iwl_mld_set_rekey_data(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_gtk_rekey_data *data)
{
struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw);
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data;
lockdep_assert_wiphy(mld->wiphy);
wowlan_data->rekey_data.kek_len = data->kek_len;
wowlan_data->rekey_data.kck_len = data->kck_len;
memcpy(wowlan_data->rekey_data.kek, data->kek, data->kek_len);
memcpy(wowlan_data->rekey_data.kck, data->kck, data->kck_len);
wowlan_data->rekey_data.akm = data->akm & 0xFF;
wowlan_data->rekey_data.replay_ctr =
cpu_to_le64(be64_to_cpup((const __be64 *)data->replay_ctr));
wowlan_data->rekey_data.valid = true;
}
#if IS_ENABLED(CONFIG_IPV6)
void iwl_mld_ipv6_addr_change(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct inet6_dev *idev)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data;
struct inet6_ifaddr *ifa;
int idx = 0;
memset(wowlan_data->tentative_addrs, 0,
sizeof(wowlan_data->tentative_addrs));
read_lock_bh(&idev->lock);
list_for_each_entry(ifa, &idev->addr_list, if_list) {
wowlan_data->target_ipv6_addrs[idx] = ifa->addr;
if (ifa->flags & IFA_F_TENTATIVE)
__set_bit(idx, wowlan_data->tentative_addrs);
idx++;
if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
break;
}
read_unlock_bh(&idev->lock);
wowlan_data->num_target_ipv6_addrs = idx;
}
#endif
static int
iwl_mld_netdetect_config(struct iwl_mld *mld,
struct ieee80211_vif *vif,
const struct cfg80211_wowlan *wowlan)
{
int ret;
struct cfg80211_sched_scan_request *netdetect_cfg =
wowlan->nd_config;
struct ieee80211_scan_ies ies = {};
ret = iwl_mld_scan_stop(mld, IWL_MLD_SCAN_SCHED, true);
if (ret)
return ret;
ret = iwl_mld_sched_scan_start(mld, vif, netdetect_cfg, &ies,
IWL_MLD_SCAN_NETDETECT);
return ret;
}
static void
iwl_mld_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_mld_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_mld_convert_gtk_resume_seq(struct iwl_mld_mcast_key_data *gtk_data,
const struct iwl_wowlan_all_rsc_tsc_v5 *sc,
int rsc_idx)
{
struct ieee80211_key_seq *aes_seq = gtk_data->gtk.aes_seq;
struct ieee80211_key_seq *tkip_seq = gtk_data->gtk.tkip_seq;
if (rsc_idx >= ARRAY_SIZE(sc->mcast_rsc))
return;
/* We store both the TKIP and AES representations coming from the
* FW because we decode the data from there before we iterate
* the keys and know which type is used.
*/
for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
iwl_mld_le64_to_tkip_seq(sc->mcast_rsc[rsc_idx][tid],
&tkip_seq[tid]);
iwl_mld_le64_to_aes_seq(sc->mcast_rsc[rsc_idx][tid],
&aes_seq[tid]);
}
}
static void
iwl_mld_convert_gtk_resume_data(struct iwl_mld *mld,
struct iwl_mld_wowlan_status *wowlan_status,
const struct iwl_wowlan_gtk_status_v3 *gtk_data,
const struct iwl_wowlan_all_rsc_tsc_v5 *sc)
{
int status_idx = 0;
BUILD_BUG_ON(sizeof(wowlan_status->gtk[0].key) <
sizeof(gtk_data[0].key));
BUILD_BUG_ON(ARRAY_SIZE(wowlan_status->gtk) < WOWLAN_GTK_KEYS_NUM);
for (int notif_idx = 0; notif_idx < ARRAY_SIZE(wowlan_status->gtk);
notif_idx++) {
int rsc_idx;
if (!(gtk_data[notif_idx].key_len))
continue;
wowlan_status->gtk[status_idx].len =
gtk_data[notif_idx].key_len;
wowlan_status->gtk[status_idx].flags =
gtk_data[notif_idx].key_flags;
wowlan_status->gtk[status_idx].id =
wowlan_status->gtk[status_idx].flags &
IWL_WOWLAN_GTK_IDX_MASK;
memcpy(wowlan_status->gtk[status_idx].key,
gtk_data[notif_idx].key,
sizeof(gtk_data[notif_idx].key));
/* The rsc for both gtk keys are stored in gtk[0]->sc->mcast_rsc
* The gtk ids can be any two numbers between 0 and 3,
* the id_map maps between the key id and the index in sc->mcast
*/
rsc_idx =
sc->mcast_key_id_map[wowlan_status->gtk[status_idx].id];
iwl_mld_convert_gtk_resume_seq(&wowlan_status->gtk[status_idx],
sc, rsc_idx);
/* if it's as long as the TKIP encryption key, copy MIC key */
if (wowlan_status->gtk[status_idx].len ==
NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
memcpy(wowlan_status->gtk[status_idx].key +
NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
gtk_data[notif_idx].tkip_mic_key,
sizeof(gtk_data[notif_idx].tkip_mic_key));
status_idx++;
}
}
static void
iwl_mld_convert_ptk_resume_seq(struct iwl_mld *mld,
struct iwl_mld_wowlan_status *wowlan_status,
const struct iwl_wowlan_all_rsc_tsc_v5 *sc)
{
struct ieee80211_key_seq *aes_seq = wowlan_status->ptk.aes_seq;
struct ieee80211_key_seq *tkip_seq = wowlan_status->ptk.tkip_seq;
BUILD_BUG_ON(ARRAY_SIZE(sc->ucast_rsc) != IWL_MAX_TID_COUNT);
for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
iwl_mld_le64_to_aes_seq(sc->ucast_rsc[tid], &aes_seq[tid]);
iwl_mld_le64_to_tkip_seq(sc->ucast_rsc[tid], &tkip_seq[tid]);
}
}
static void
iwl_mld_convert_mcast_ipn(struct iwl_mld_mcast_key_data *key_status,
const struct iwl_wowlan_igtk_status *key)
{
struct ieee80211_key_seq *seq =
&key_status->igtk_bigtk.cmac_gmac_seq;
u8 ipn_len = ARRAY_SIZE(key->ipn);
BUILD_BUG_ON(ipn_len != ARRAY_SIZE(seq->aes_gmac.pn));
BUILD_BUG_ON(ipn_len != ARRAY_SIZE(seq->aes_cmac.pn));
BUILD_BUG_ON(offsetof(struct ieee80211_key_seq, aes_gmac) !=
offsetof(struct ieee80211_key_seq, aes_cmac));
/* mac80211 expects big endian for memcmp() to work, convert.
* We don't have the key cipher yet so copy to both to cmac and gmac
*/
for (int i = 0; i < ipn_len; i++) {
seq->aes_gmac.pn[i] = key->ipn[ipn_len - i - 1];
seq->aes_cmac.pn[i] = key->ipn[ipn_len - i - 1];
}
}
static void
iwl_mld_convert_igtk_resume_data(struct iwl_mld_wowlan_status *wowlan_status,
const struct iwl_wowlan_igtk_status *igtk)
{
BUILD_BUG_ON(sizeof(wowlan_status->igtk.key) < sizeof(igtk->key));
if (!igtk->key_len)
return;
wowlan_status->igtk.len = igtk->key_len;
wowlan_status->igtk.flags = igtk->key_flags;
wowlan_status->igtk.id =
u32_get_bits(igtk->key_flags,
IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) +
WOWLAN_IGTK_MIN_INDEX;
memcpy(wowlan_status->igtk.key, igtk->key, sizeof(igtk->key));
iwl_mld_convert_mcast_ipn(&wowlan_status->igtk, igtk);
}
static void
iwl_mld_convert_bigtk_resume_data(struct iwl_mld_wowlan_status *wowlan_status,
const struct iwl_wowlan_igtk_status *bigtk)
{
int status_idx = 0;
BUILD_BUG_ON(ARRAY_SIZE(wowlan_status->bigtk) < WOWLAN_BIGTK_KEYS_NUM);
for (int notif_idx = 0; notif_idx < WOWLAN_BIGTK_KEYS_NUM;
notif_idx++) {
if (!bigtk[notif_idx].key_len)
continue;
wowlan_status->bigtk[status_idx].len = bigtk[notif_idx].key_len;
wowlan_status->bigtk[status_idx].flags =
bigtk[notif_idx].key_flags;
wowlan_status->bigtk[status_idx].id =
u32_get_bits(bigtk[notif_idx].key_flags,
IWL_WOWLAN_IGTK_BIGTK_IDX_MASK)
+ WOWLAN_BIGTK_MIN_INDEX;
BUILD_BUG_ON(sizeof(wowlan_status->bigtk[status_idx].key) <
sizeof(bigtk[notif_idx].key));
memcpy(wowlan_status->bigtk[status_idx].key,
bigtk[notif_idx].key, sizeof(bigtk[notif_idx].key));
iwl_mld_convert_mcast_ipn(&wowlan_status->bigtk[status_idx],
&bigtk[notif_idx]);
status_idx++;
}
}
static bool
iwl_mld_handle_wowlan_info_notif(struct iwl_mld *mld,
struct iwl_mld_wowlan_status *wowlan_status,
struct iwl_rx_packet *pkt)
{
const struct iwl_wowlan_info_notif *notif = (void *)pkt->data;
u32 expected_len, len = iwl_rx_packet_payload_len(pkt);
expected_len = sizeof(*notif);
if (IWL_FW_CHECK(mld, len < expected_len,
"Invalid wowlan_info_notif (expected=%ud got=%ud)\n",
expected_len, len))
return true;
if (IWL_FW_CHECK(mld, notif->tid_offloaded_tx != IWL_WOWLAN_OFFLOAD_TID,
"Invalid tid_offloaded_tx %d\n",
wowlan_status->tid_offloaded_tx))
return true;
iwl_mld_convert_gtk_resume_data(mld, wowlan_status, notif->gtk,
&notif->gtk[0].sc);
iwl_mld_convert_ptk_resume_seq(mld, wowlan_status, &notif->gtk[0].sc);
/* only one igtk is passed by FW */
iwl_mld_convert_igtk_resume_data(wowlan_status, &notif->igtk[0]);
iwl_mld_convert_bigtk_resume_data(wowlan_status, notif->bigtk);
wowlan_status->replay_ctr = le64_to_cpu(notif->replay_ctr);
wowlan_status->pattern_number = le16_to_cpu(notif->pattern_number);
wowlan_status->tid_offloaded_tx = notif->tid_offloaded_tx;
wowlan_status->last_qos_seq = le16_to_cpu(notif->qos_seq_ctr);
wowlan_status->num_of_gtk_rekeys =
le32_to_cpu(notif->num_of_gtk_rekeys);
wowlan_status->wakeup_reasons = le32_to_cpu(notif->wakeup_reasons);
return false;
/* TODO: mlo_links (task=MLO)*/
}
static bool
iwl_mld_handle_wake_pkt_notif(struct iwl_mld *mld,
struct iwl_mld_wowlan_status *wowlan_status,
struct iwl_rx_packet *pkt)
{
const struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data;
u32 actual_size, len = iwl_rx_packet_payload_len(pkt);
u32 expected_size = le32_to_cpu(notif->wake_packet_length);
if (IWL_FW_CHECK(mld, len < sizeof(*notif),
"Invalid WoWLAN wake packet notification (expected size=%zu got=%u)\n",
sizeof(*notif), len))
return true;
if (IWL_FW_CHECK(mld, !(wowlan_status->wakeup_reasons &
IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT),
"Got wake packet but wakeup reason is %x\n",
wowlan_status->wakeup_reasons))
return true;
actual_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif,
wake_packet);
/* actual_size got the padding from the notification, remove it. */
if (expected_size < actual_size)
actual_size = expected_size;
wowlan_status->wake_packet = kmemdup(notif->wake_packet, actual_size,
GFP_ATOMIC);
if (!wowlan_status->wake_packet)
return true;
wowlan_status->wake_packet_length = expected_size;
wowlan_status->wake_packet_bufsize = actual_size;
return false;
}
static void
iwl_mld_set_wake_packet(struct iwl_mld *mld,
struct ieee80211_vif *vif,
const struct iwl_mld_wowlan_status *wowlan_status,
struct cfg80211_wowlan_wakeup *wakeup,
struct sk_buff **_pkt)
{
int pkt_bufsize = wowlan_status->wake_packet_bufsize;
int expected_pktlen = wowlan_status->wake_packet_length;
const u8 *pktdata = wowlan_status->wake_packet;
const struct ieee80211_hdr *hdr = (const void *)pktdata;
int truncated = expected_pktlen - pkt_bufsize;
if (ieee80211_is_data(hdr->frame_control)) {
int hdrlen = ieee80211_hdrlen(hdr->frame_control);
int ivlen = 0, icvlen = 4; /* also FCS */
struct sk_buff *pkt = alloc_skb(pkt_bufsize, GFP_KERNEL);
*_pkt = pkt;
if (!pkt)
return;
skb_put_data(pkt, pktdata, hdrlen);
pktdata += hdrlen;
pkt_bufsize -= hdrlen;
/* if truncated, FCS/ICV is (partially) gone */
if (truncated >= icvlen) {
truncated -= icvlen;
icvlen = 0;
} else {
icvlen -= truncated;
truncated = 0;
}
pkt_bufsize -= ivlen + icvlen;
pktdata += ivlen;
skb_put_data(pkt, pktdata, pkt_bufsize);
if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
return;
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;
}
pkt_bufsize -= fcslen;
wakeup->packet = wowlan_status->wake_packet;
wakeup->packet_present_len = pkt_bufsize;
wakeup->packet_len = expected_pktlen - truncated;
wakeup->packet_80211 = true;
}
}
static void
iwl_mld_report_wowlan_wakeup(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mld_wowlan_status *wowlan_status)
{
struct sk_buff *pkt = NULL;
struct cfg80211_wowlan_wakeup wakeup = {
.pattern_idx = -1,
};
u32 reasons = wowlan_status->wakeup_reasons;
if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
ieee80211_report_wowlan_wakeup(vif, NULL, GFP_KERNEL);
return;
}
pm_wakeup_event(mld->dev, 0);
if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
wakeup.magic_pkt = true;
if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
wakeup.pattern_idx =
wowlan_status->pattern_number;
if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH |
IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE))
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 (reasons & IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC)
wakeup.unprot_deauth_disassoc = true;
if (wowlan_status->wake_packet)
iwl_mld_set_wake_packet(mld, vif, wowlan_status, &wakeup, &pkt);
ieee80211_report_wowlan_wakeup(vif, &wakeup, GFP_KERNEL);
kfree_skb(pkt);
}
static void
iwl_mld_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_mld_set_key_rx_seq(struct ieee80211_key_conf *key,
struct iwl_mld_mcast_key_data *key_data)
{
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
iwl_mld_set_key_rx_seq_tids(key,
key_data->gtk.aes_seq);
break;
case WLAN_CIPHER_SUITE_TKIP:
iwl_mld_set_key_rx_seq_tids(key,
key_data->gtk.tkip_seq);
break;
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
case WLAN_CIPHER_SUITE_AES_CMAC:
/* igtk/bigtk ciphers*/
ieee80211_set_key_rx_seq(key, 0,
&key_data->igtk_bigtk.cmac_gmac_seq);
break;
default:
WARN_ON(1);
}
}
static void
iwl_mld_update_ptk_rx_seq(struct iwl_mld *mld,
struct iwl_mld_wowlan_status *wowlan_status,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
bool is_tkip)
{
struct iwl_mld_sta *mld_sta =
iwl_mld_sta_from_mac80211(sta);
struct iwl_mld_ptk_pn *mld_ptk_pn =
wiphy_dereference(mld->wiphy,
mld_sta->ptk_pn[key->keyidx]);
iwl_mld_set_key_rx_seq_tids(key, is_tkip ?
wowlan_status->ptk.tkip_seq :
wowlan_status->ptk.aes_seq);
if (is_tkip)
return;
if (WARN_ON(!mld_ptk_pn))
return;
for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
for (int i = 1; i < mld->trans->info.num_rxqs; i++)
memcpy(mld_ptk_pn->q[i].pn[tid],
wowlan_status->ptk.aes_seq[tid].ccmp.pn,
IEEE80211_CCMP_PN_LEN);
}
}
static void
iwl_mld_resume_keys_iter(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *_data)
{
struct iwl_mld_resume_key_iter_data *data = _data;
struct iwl_mld_wowlan_status *wowlan_status = data->wowlan_status;
u8 status_idx;
/* TODO: check key link id (task=MLO) */
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:
if (sta) {
iwl_mld_update_ptk_rx_seq(data->mld, wowlan_status,
sta, key,
key->cipher ==
WLAN_CIPHER_SUITE_TKIP);
return;
}
if (WARN_ON(data->gtk_cipher &&
data->gtk_cipher != key->cipher))
return;
data->gtk_cipher = key->cipher;
status_idx = key->keyidx == wowlan_status->gtk[1].id;
iwl_mld_set_key_rx_seq(key, &wowlan_status->gtk[status_idx]);
break;
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
case WLAN_CIPHER_SUITE_AES_CMAC:
if (key->keyidx == 4 || key->keyidx == 5) {
if (WARN_ON(data->igtk_cipher &&
data->igtk_cipher != key->cipher))
return;
data->igtk_cipher = key->cipher;
if (key->keyidx == wowlan_status->igtk.id)
iwl_mld_set_key_rx_seq(key, &wowlan_status->igtk);
}
if (key->keyidx == 6 || key->keyidx == 7) {
if (WARN_ON(data->bigtk_cipher &&
data->bigtk_cipher != key->cipher))
return;
data->bigtk_cipher = key->cipher;
status_idx = key->keyidx == wowlan_status->bigtk[1].id;
iwl_mld_set_key_rx_seq(key, &wowlan_status->bigtk[status_idx]);
}
break;
default:
data->unhandled_cipher = true;
return;
}
data->num_keys++;
}
static void
iwl_mld_add_mcast_rekey(struct ieee80211_vif *vif,
struct iwl_mld *mld,
struct iwl_mld_mcast_key_data *key_data,
struct ieee80211_bss_conf *link_conf,
u32 cipher)
{
struct ieee80211_key_conf *key_config;
struct {
struct ieee80211_key_conf conf;
u8 key[WOWLAN_KEY_MAX_SIZE];
} conf = {
.conf.cipher = cipher,
.conf.keyidx = key_data->id,
};
int link_id = vif->active_links ? __ffs(vif->active_links) : -1;
u8 key[WOWLAN_KEY_MAX_SIZE];
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) < WLAN_KEY_LEN_BIP_GMAC_128);
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_BIP_GMAC_256);
BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_AES_CMAC);
BUILD_BUG_ON(sizeof(conf.key) < sizeof(key_data->key));
if (!key_data->len)
return;
switch (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;
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_128;
break;
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
conf.conf.keylen = WLAN_KEY_LEN_BIP_GMAC_256;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
conf.conf.keylen = WLAN_KEY_LEN_AES_CMAC;
break;
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
conf.conf.keylen = WLAN_KEY_LEN_BIP_CMAC_256;
break;
default:
WARN_ON(1);
}
memcpy(conf.conf.key, key_data->key, conf.conf.keylen);
memcpy(key, key_data->key, sizeof(key_data->key));
key_config = ieee80211_gtk_rekey_add(vif, key_data->id, key,
sizeof(key), link_id);
if (IS_ERR(key_config))
return;
iwl_mld_set_key_rx_seq(key_config, key_data);
/* The FW holds only one igtk so we keep track of the valid one */
if (key_config->keyidx == 4 || key_config->keyidx == 5) {
struct iwl_mld_link *mld_link =
iwl_mld_link_from_mac80211(link_conf);
/* If we had more than one rekey, mac80211 will tell us to
* remove the old and add the new so we will update the IGTK in
* drv_set_key
*/
if (mld_link->igtk && mld_link->igtk != key_config) {
/* mark the old IGTK as not in FW */
mld_link->igtk->hw_key_idx = STA_KEY_IDX_INVALID;
mld_link->igtk = key_config;
}
}
/* Also keep track of the new BIGTK */
if ((key_config->keyidx == 6 || key_config->keyidx == 7) &&
vif->type == NL80211_IFTYPE_STATION) {
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
rcu_assign_pointer(mld_vif->bigtks[key_config->keyidx - 6], key_config);
}
}
static void
iwl_mld_add_all_rekeys(struct ieee80211_vif *vif,
struct iwl_mld_wowlan_status *wowlan_status,
struct iwl_mld_resume_key_iter_data *key_iter_data,
struct ieee80211_bss_conf *link_conf)
{
int i;
for (i = 0; i < ARRAY_SIZE(wowlan_status->gtk); i++)
iwl_mld_add_mcast_rekey(vif, key_iter_data->mld,
&wowlan_status->gtk[i],
link_conf,
key_iter_data->gtk_cipher);
iwl_mld_add_mcast_rekey(vif, key_iter_data->mld,
&wowlan_status->igtk,
link_conf, key_iter_data->igtk_cipher);
for (i = 0; i < ARRAY_SIZE(wowlan_status->bigtk); i++)
iwl_mld_add_mcast_rekey(vif, key_iter_data->mld,
&wowlan_status->bigtk[i],
link_conf,
key_iter_data->bigtk_cipher);
}
static bool
iwl_mld_update_sec_keys(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mld_wowlan_status *wowlan_status)
{
int link_id = vif->active_links ? __ffs(vif->active_links) : 0;
struct ieee80211_bss_conf *link_conf =
link_conf_dereference_protected(vif, link_id);
__be64 replay_ctr = cpu_to_be64(wowlan_status->replay_ctr);
struct iwl_mld_resume_key_iter_data key_iter_data = {
.mld = mld,
.wowlan_status = wowlan_status,
};
if (WARN_ON(!link_conf))
return false;
ieee80211_iter_keys(mld->hw, vif, iwl_mld_resume_keys_iter,
&key_iter_data);
if (key_iter_data.unhandled_cipher)
return false;
IWL_DEBUG_WOWLAN(mld,
"Number of installed keys: %d, Number of rekeys: %d\n",
key_iter_data.num_keys,
wowlan_status->num_of_gtk_rekeys);
if (!key_iter_data.num_keys || !wowlan_status->num_of_gtk_rekeys)
return true;
iwl_mld_add_all_rekeys(vif, wowlan_status, &key_iter_data,
link_conf);
ieee80211_gtk_rekey_notify(vif, link_conf->bssid,
(void *)&replay_ctr, GFP_KERNEL);
/* TODO: MLO rekey (task=MLO) */
return true;
}
static bool
iwl_mld_process_wowlan_status(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mld_wowlan_status *wowlan_status)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
struct ieee80211_sta *ap_sta = mld_vif->ap_sta;
struct iwl_mld_txq *mld_txq;
iwl_mld_report_wowlan_wakeup(mld, vif, wowlan_status);
if (WARN_ON(!ap_sta))
return false;
mld_txq =
iwl_mld_txq_from_mac80211(ap_sta->txq[wowlan_status->tid_offloaded_tx]);
/* Update the pointers of the Tx queue that may have moved during
* suspend if the firmware sent frames.
* The firmware stores last-used value, we store next value.
*/
WARN_ON(!mld_txq->status.allocated);
iwl_trans_set_q_ptrs(mld->trans, mld_txq->fw_id,
(wowlan_status->last_qos_seq +
0x10) >> 4);
if (!iwl_mld_update_sec_keys(mld, vif, wowlan_status))
return false;
if (wowlan_status->wakeup_reasons &
(IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH |
IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE))
return false;
return true;
}
static bool
iwl_mld_netdetect_match_info_handler(struct iwl_mld *mld,
struct iwl_mld_resume_data *resume_data,
struct iwl_rx_packet *pkt)
{
struct iwl_mld_netdetect_res *results = resume_data->netdetect_res;
const struct iwl_scan_offload_match_info *notif = (void *)pkt->data;
u32 len = iwl_rx_packet_payload_len(pkt);
if (IWL_FW_CHECK(mld, !mld->netdetect,
"Got scan match info notif when mld->netdetect==%d\n",
mld->netdetect))
return true;
if (IWL_FW_CHECK(mld, len < sizeof(*notif),
"Invalid scan offload match notif of length: %d\n",
len))
return true;
if (IWL_FW_CHECK(mld, resume_data->wowlan_status->wakeup_reasons !=
IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS,
"Ignore scan match info: unexpected wakeup reason (expected=0x%x got=0x%x)\n",
IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS,
resume_data->wowlan_status->wakeup_reasons))
return true;
results->matched_profiles = le32_to_cpu(notif->matched_profiles);
IWL_DEBUG_WOWLAN(mld, "number of matched profiles=%u\n",
results->matched_profiles);
if (results->matched_profiles)
memcpy(results->matches, notif->matches,
NETDETECT_QUERY_BUF_LEN);
/* No scan should be active at this point */
mld->scan.status = 0;
memset(mld->scan.uid_status, 0, sizeof(mld->scan.uid_status));
return false;
}
static void
iwl_mld_set_netdetect_info(struct iwl_mld *mld,
const struct cfg80211_sched_scan_request *netdetect_cfg,
struct cfg80211_wowlan_nd_info *netdetect_info,
struct iwl_mld_netdetect_res *netdetect_res,
unsigned long matched_profiles)
{
int i;
for_each_set_bit(i, &matched_profiles, netdetect_cfg->n_match_sets) {
struct cfg80211_wowlan_nd_match *match;
int idx, j, n_channels = 0;
struct iwl_scan_offload_profile_match *matches =
(void *)netdetect_res->matches;
for (int k = 0; k < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; k++)
n_channels +=
hweight8(matches[i].matching_channels[k]);
match = kzalloc(struct_size(match, channels, n_channels),
GFP_KERNEL);
if (!match)
return;
netdetect_info->matches[netdetect_info->n_matches] = match;
netdetect_info->n_matches++;
/* We inverted the order of the SSIDs in the scan
* request, so invert the index here.
*/
idx = netdetect_cfg->n_match_sets - i - 1;
match->ssid.ssid_len =
netdetect_cfg->match_sets[idx].ssid.ssid_len;
memcpy(match->ssid.ssid,
netdetect_cfg->match_sets[idx].ssid.ssid,
match->ssid.ssid_len);
if (netdetect_cfg->n_channels < n_channels)
continue;
for_each_set_bit(j,
(unsigned long *)&matches[i].matching_channels[0],
sizeof(matches[i].matching_channels)) {
match->channels[match->n_channels] =
netdetect_cfg->channels[j]->center_freq;
match->n_channels++;
}
}
}
static void
iwl_mld_process_netdetect_res(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mld_resume_data *resume_data)
{
struct cfg80211_wowlan_nd_info *netdetect_info = NULL;
const struct cfg80211_sched_scan_request *netdetect_cfg;
struct cfg80211_wowlan_wakeup wakeup = {
.pattern_idx = -1,
};
struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
unsigned long matched_profiles;
u32 wakeup_reasons;
int n_matches;
lockdep_assert_wiphy(mld->wiphy);
if (WARN_ON(!mld->wiphy->wowlan_config ||
!mld->wiphy->wowlan_config->nd_config)) {
IWL_DEBUG_WOWLAN(mld,
"Netdetect isn't configured on resume flow\n");
goto out;
}
netdetect_cfg = mld->wiphy->wowlan_config->nd_config;
wakeup_reasons = resume_data->wowlan_status->wakeup_reasons;
if (wakeup_reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
wakeup.rfkill_release = true;
if (wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
goto out;
if (!resume_data->netdetect_res->matched_profiles) {
IWL_DEBUG_WOWLAN(mld,
"Netdetect results aren't valid\n");
wakeup_report = NULL;
goto out;
}
matched_profiles = resume_data->netdetect_res->matched_profiles;
if (!netdetect_cfg->n_match_sets) {
IWL_DEBUG_WOWLAN(mld,
"No netdetect match sets are configured\n");
goto out;
}
n_matches = hweight_long(matched_profiles);
netdetect_info = kzalloc(struct_size(netdetect_info, matches,
n_matches), GFP_KERNEL);
if (netdetect_info)
iwl_mld_set_netdetect_info(mld, netdetect_cfg, netdetect_info,
resume_data->netdetect_res,
matched_profiles);
wakeup.net_detect = netdetect_info;
out:
ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
if (netdetect_info) {
for (int i = 0; i < netdetect_info->n_matches; i++)
kfree(netdetect_info->matches[i]);
kfree(netdetect_info);
}
}
static bool iwl_mld_handle_d3_notif(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{
struct iwl_mld_resume_data *resume_data = data;
struct iwl_mld *mld =
container_of(notif_wait, struct iwl_mld, notif_wait);
switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
if (resume_data->notifs_received & IWL_D3_NOTIF_WOWLAN_INFO) {
IWL_DEBUG_WOWLAN(mld,
"got additional wowlan_info notif\n");
break;
}
resume_data->notif_handling_err =
iwl_mld_handle_wowlan_info_notif(mld,
resume_data->wowlan_status,
pkt);
resume_data->notifs_received |= IWL_D3_NOTIF_WOWLAN_INFO;
if (resume_data->wowlan_status->wakeup_reasons &
IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT)
resume_data->notifs_expected |=
IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
break;
}
case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): {
if (resume_data->notifs_received &
IWL_D3_NOTIF_WOWLAN_WAKE_PKT) {
/* We shouldn't get two wake packet notifications */
IWL_DEBUG_WOWLAN(mld,
"Got additional wowlan wake packet notification\n");
break;
}
resume_data->notif_handling_err =
iwl_mld_handle_wake_pkt_notif(mld,
resume_data->wowlan_status,
pkt);
resume_data->notifs_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT;
break;
}
case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): {
if (resume_data->notifs_received & IWL_D3_ND_MATCH_INFO) {
IWL_ERR(mld,
"Got additional netdetect match info\n");
break;
}
resume_data->notif_handling_err =
iwl_mld_netdetect_match_info_handler(mld, resume_data,
pkt);
resume_data->notifs_received |= IWL_D3_ND_MATCH_INFO;
break;
}
case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): {
struct iwl_d3_end_notif *notif = (void *)pkt->data;
resume_data->d3_end_flags = le32_to_cpu(notif->flags);
resume_data->notifs_received |= IWL_D3_NOTIF_D3_END_NOTIF;
break;
}
default:
WARN_ON(1);
}
return resume_data->notifs_received == resume_data->notifs_expected;
}
#define IWL_MLD_D3_NOTIF_TIMEOUT (HZ / 3)
static int iwl_mld_wait_d3_notif(struct iwl_mld *mld,
struct iwl_mld_resume_data *resume_data,
bool with_wowlan)
{
static const u16 wowlan_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)
};
static const u16 d3_resume_notif[] = {
WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION)
};
struct iwl_notification_wait wait_d3_notif;
enum iwl_d3_status d3_status;
int ret;
if (with_wowlan)
iwl_init_notification_wait(&mld->notif_wait, &wait_d3_notif,
wowlan_resume_notif,
ARRAY_SIZE(wowlan_resume_notif),
iwl_mld_handle_d3_notif,
resume_data);
else
iwl_init_notification_wait(&mld->notif_wait, &wait_d3_notif,
d3_resume_notif,
ARRAY_SIZE(d3_resume_notif),
iwl_mld_handle_d3_notif,
resume_data);
ret = iwl_trans_d3_resume(mld->trans, &d3_status, false, false);
if (ret || d3_status != IWL_D3_STATUS_ALIVE) {
if (d3_status != IWL_D3_STATUS_ALIVE) {
IWL_INFO(mld, "Device was reset during suspend\n");
ret = -ENOENT;
} else {
IWL_ERR(mld, "Transport resume failed\n");
}
iwl_remove_notification(&mld->notif_wait, &wait_d3_notif);
return ret;
}
ret = iwl_wait_notification(&mld->notif_wait, &wait_d3_notif,
IWL_MLD_D3_NOTIF_TIMEOUT);
if (ret)
IWL_ERR(mld, "Couldn't get the d3 notif %d\n", ret);
if (resume_data->notif_handling_err)
ret = -EIO;
return ret;
}
int iwl_mld_no_wowlan_suspend(struct iwl_mld *mld)
{
struct iwl_d3_manager_config d3_cfg_cmd_data = {};
int ret;
if (mld->debug_max_sleep) {
d3_cfg_cmd_data.wakeup_host_timer =
cpu_to_le32(mld->debug_max_sleep);
d3_cfg_cmd_data.wakeup_flags =
cpu_to_le32(IWL_WAKEUP_D3_HOST_TIMER);
}
lockdep_assert_wiphy(mld->wiphy);
IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan suspend flow\n");
iwl_mld_low_latency_stop(mld);
/* This will happen if iwl_mld_supsend failed with FW error */
if (mld->trans->state == IWL_TRANS_NO_FW &&
test_bit(STATUS_FW_ERROR, &mld->trans->status))
return -ENODEV;
ret = iwl_mld_update_device_power(mld, true);
if (ret) {
IWL_ERR(mld,
"d3 suspend: couldn't send power_device %d\n", ret);
goto out;
}
ret = iwl_mld_send_cmd_pdu(mld, D3_CONFIG_CMD,
&d3_cfg_cmd_data);
if (ret) {
IWL_ERR(mld,
"d3 suspend: couldn't send D3_CONFIG_CMD %d\n", ret);
goto out;
}
ret = iwl_trans_d3_suspend(mld->trans, false, false);
if (ret) {
IWL_ERR(mld, "d3 suspend: trans_d3_suspend failed %d\n", ret);
} else {
/* Async notification might send hcmds, which is not allowed in suspend */
iwl_mld_cancel_async_notifications(mld);
mld->fw_status.in_d3 = true;
}
out:
if (ret) {
mld->trans->state = IWL_TRANS_NO_FW;
set_bit(STATUS_FW_ERROR, &mld->trans->status);
}
return ret;
}
int iwl_mld_no_wowlan_resume(struct iwl_mld *mld)
{
struct iwl_mld_resume_data resume_data = {
.notifs_expected =
IWL_D3_NOTIF_D3_END_NOTIF,
};
int ret;
lockdep_assert_wiphy(mld->wiphy);
IWL_DEBUG_WOWLAN(mld, "Starting the no wowlan resume flow\n");
mld->fw_status.in_d3 = false;
iwl_fw_dbg_read_d3_debug_data(&mld->fwrt);
ret = iwl_mld_wait_d3_notif(mld, &resume_data, false);
if (!ret && (resume_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE))
return -ENODEV;
if (ret) {
mld->trans->state = IWL_TRANS_NO_FW;
set_bit(STATUS_FW_ERROR, &mld->trans->status);
return ret;
}
iwl_mld_low_latency_restart(mld);
return iwl_mld_update_device_power(mld, false);
}
static void
iwl_mld_aes_seq_to_le64_pn(struct ieee80211_key_conf *key,
__le64 *key_rsc)
{
for (int i = 0; i < IWL_MAX_TID_COUNT; i++) {
struct ieee80211_key_seq seq;
u8 *pn = key->cipher == WLAN_CIPHER_SUITE_CCMP ? seq.ccmp.pn :
seq.gcmp.pn;
ieee80211_get_key_rx_seq(key, i, &seq);
key_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));
}
}
static void
iwl_mld_suspend_set_ucast_pn(struct iwl_mld *mld, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key, __le64 *key_rsc)
{
struct iwl_mld_sta *mld_sta =
iwl_mld_sta_from_mac80211(sta);
struct iwl_mld_ptk_pn *mld_ptk_pn;
if (WARN_ON(key->keyidx >= ARRAY_SIZE(mld_sta->ptk_pn)))
return;
mld_ptk_pn = wiphy_dereference(mld->wiphy,
mld_sta->ptk_pn[key->keyidx]);
if (WARN_ON(!mld_ptk_pn))
return;
for (int tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
struct ieee80211_key_seq seq;
u8 *max_pn = seq.ccmp.pn;
/* get the PN from mac80211, used on the default queue */
ieee80211_get_key_rx_seq(key, tid, &seq);
/* and use the internal data for all queues */
for (int que = 1; que < mld->trans->info.num_rxqs; que++) {
u8 *cur_pn = mld_ptk_pn->q[que].pn[tid];
if (memcmp(max_pn, cur_pn, IEEE80211_CCMP_PN_LEN) < 0)
max_pn = cur_pn;
}
key_rsc[tid] = cpu_to_le64((u64)max_pn[5] |
((u64)max_pn[4] << 8) |
((u64)max_pn[3] << 16) |
((u64)max_pn[2] << 24) |
((u64)max_pn[1] << 32) |
((u64)max_pn[0] << 40));
}
}
static void
iwl_mld_suspend_convert_tkip_ipn(struct ieee80211_key_conf *key,
__le64 *rsc)
{
struct ieee80211_key_seq seq;
for (int 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);
}
}
static void
iwl_mld_suspend_key_data_iter(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_key_conf *key,
void *_data)
{
struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw);
struct iwl_mld_suspend_key_iter_data *data = _data;
__le64 *key_rsc;
__le32 cipher = 0;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_CCMP:
cipher = cpu_to_le32(STA_KEY_FLG_CCM);
fallthrough;
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
if (!cipher)
cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
fallthrough;
case WLAN_CIPHER_SUITE_TKIP:
if (!cipher)
cipher = cpu_to_le32(STA_KEY_FLG_TKIP);
if (sta) {
key_rsc = data->rsc->ucast_rsc;
if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
iwl_mld_suspend_convert_tkip_ipn(key, key_rsc);
else
iwl_mld_suspend_set_ucast_pn(mld, sta, key,
key_rsc);
data->have_rsc = true;
return;
}
/* We're iterating from old to new, there're 4 possible
* gtk ids, and only the last two keys matter
*/
if (WARN_ON(data->gtks >=
ARRAY_SIZE(data->found_gtk_idx)))
return;
if (WARN_ON(key->keyidx >=
ARRAY_SIZE(data->rsc->mcast_key_id_map)))
return;
data->gtk_cipher = cipher;
data->found_gtk_idx[data->gtks] = key->keyidx;
key_rsc = data->rsc->mcast_rsc[data->gtks % 2];
data->rsc->mcast_key_id_map[key->keyidx] =
data->gtks % 2;
if (data->gtks >= 2) {
int prev = data->gtks % 2;
int prev_idx = data->found_gtk_idx[prev];
data->rsc->mcast_key_id_map[prev_idx] =
IWL_MCAST_KEY_MAP_INVALID;
}
if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
iwl_mld_suspend_convert_tkip_ipn(key, key_rsc);
else
iwl_mld_aes_seq_to_le64_pn(key, key_rsc);
data->gtks++;
data->have_rsc = true;
break;
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
cipher = cpu_to_le32(STA_KEY_FLG_GCMP);
fallthrough;
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
case WLAN_CIPHER_SUITE_AES_CMAC:
if (!cipher)
cipher = cpu_to_le32(STA_KEY_FLG_CCM);
if (key->keyidx == 4 || key->keyidx == 5)
data->igtk_cipher = cipher;
if (key->keyidx == 6 || key->keyidx == 7)
data->bigtk_cipher = cipher;
break;
}
}
static int
iwl_mld_send_kek_kck_cmd(struct iwl_mld *mld,
struct iwl_mld_vif *mld_vif,
struct iwl_mld_suspend_key_iter_data data,
int ap_sta_id)
{
struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {};
struct iwl_mld_rekey_data *rekey_data =
&mld_vif->wowlan_data.rekey_data;
memcpy(kek_kck_cmd.kck, rekey_data->kck,
rekey_data->kck_len);
kek_kck_cmd.kck_len = cpu_to_le16(rekey_data->kck_len);
memcpy(kek_kck_cmd.kek, rekey_data->kek,
rekey_data->kek_len);
kek_kck_cmd.kek_len = cpu_to_le16(rekey_data->kek_len);
kek_kck_cmd.replay_ctr = rekey_data->replay_ctr;
kek_kck_cmd.akm = cpu_to_le32(rekey_data->akm);
kek_kck_cmd.sta_id = cpu_to_le32(ap_sta_id);
kek_kck_cmd.gtk_cipher = data.gtk_cipher;
kek_kck_cmd.igtk_cipher = data.igtk_cipher;
kek_kck_cmd.bigtk_cipher = data.bigtk_cipher;
IWL_DEBUG_WOWLAN(mld, "setting akm %d\n",
rekey_data->akm);
return iwl_mld_send_cmd_pdu(mld, WOWLAN_KEK_KCK_MATERIAL,
&kek_kck_cmd);
}
static int
iwl_mld_suspend_send_security_cmds(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mld_vif *mld_vif,
int ap_sta_id)
{
struct iwl_mld_suspend_key_iter_data data = {};
int ret;
data.rsc = kzalloc(sizeof(*data.rsc), GFP_KERNEL);
if (!data.rsc)
return -ENOMEM;
memset(data.rsc->mcast_key_id_map, IWL_MCAST_KEY_MAP_INVALID,
ARRAY_SIZE(data.rsc->mcast_key_id_map));
data.rsc->sta_id = cpu_to_le32(ap_sta_id);
ieee80211_iter_keys(mld->hw, vif,
iwl_mld_suspend_key_data_iter,
&data);
if (data.have_rsc)
ret = iwl_mld_send_cmd_pdu(mld, WOWLAN_TSC_RSC_PARAM,
data.rsc);
else
ret = 0;
if (!ret && mld_vif->wowlan_data.rekey_data.valid)
ret = iwl_mld_send_kek_kck_cmd(mld, mld_vif, data, ap_sta_id);
kfree(data.rsc);
return ret;
}
static void
iwl_mld_set_wowlan_config_cmd(struct iwl_mld *mld,
struct cfg80211_wowlan *wowlan,
struct iwl_wowlan_config_cmd *wowlan_config_cmd,
struct ieee80211_sta *ap_sta)
{
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 (ap_sta->mfp)
wowlan_config_cmd->flags |= IS_11W_ASSOC;
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->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);
}
}
static int iwl_mld_send_patterns(struct iwl_mld *mld,
struct cfg80211_wowlan *wowlan,
int ap_sta_id)
{
struct iwl_wowlan_patterns_cmd *pattern_cmd;
struct iwl_host_cmd cmd = {
.id = WOWLAN_PATTERNS,
.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
};
int ret;
if (!wowlan->n_patterns)
return 0;
cmd.len[0] = struct_size(pattern_cmd, patterns, wowlan->n_patterns);
pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL);
if (!pattern_cmd)
return -ENOMEM;
pattern_cmd->n_patterns = wowlan->n_patterns;
pattern_cmd->sta_id = ap_sta_id;
for (int 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;
ret = iwl_mld_send_cmd(mld, &cmd);
kfree(pattern_cmd);
return ret;
}
static int
iwl_mld_send_proto_offload(struct iwl_mld *mld,
struct ieee80211_vif *vif,
u8 ap_sta_id)
{
struct iwl_proto_offload_cmd_v4 *cmd __free(kfree);
struct iwl_host_cmd hcmd = {
.id = PROT_OFFLOAD_CONFIG_CMD,
.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
.len[0] = sizeof(*cmd),
};
u32 enabled = 0;
cmd = kzalloc(hcmd.len[0], GFP_KERNEL);
#if IS_ENABLED(CONFIG_IPV6)
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
struct iwl_mld_wowlan_data *wowlan_data = &mld_vif->wowlan_data;
struct iwl_ns_config *nsc;
struct iwl_targ_addr *addrs;
int n_nsc, n_addrs;
int i, c;
int num_skipped = 0;
nsc = cmd->ns_config;
n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
addrs = cmd->targ_addrs;
n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
/* For each address we have (and that will fit) fill a target
* address struct and combine for NS offload structs with the
* solicited node addresses.
*/
for (i = 0, c = 0;
i < wowlan_data->num_target_ipv6_addrs &&
i < n_addrs && c < n_nsc; i++) {
int j;
struct in6_addr solicited_addr;
/* Because ns is offloaded skip tentative address to avoid
* violating RFC4862.
*/
if (test_bit(i, wowlan_data->tentative_addrs)) {
num_skipped++;
continue;
}
addrconf_addr_solict_mult(&wowlan_data->target_ipv6_addrs[i],
&solicited_addr);
for (j = 0; j < n_nsc && j < c; j++)
if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
&solicited_addr) == 0)
break;
if (j == c)
c++;
addrs[i].addr = wowlan_data->target_ipv6_addrs[i];
addrs[i].config_num = cpu_to_le32(j);
nsc[j].dest_ipv6_addr = solicited_addr;
memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
}
if (wowlan_data->num_target_ipv6_addrs - num_skipped)
enabled |= IWL_D3_PROTO_IPV6_VALID;
cmd->num_valid_ipv6_addrs = cpu_to_le32(i - num_skipped);
if (enabled & IWL_D3_PROTO_IPV6_VALID)
enabled |= IWL_D3_PROTO_OFFLOAD_NS;
#endif
if (vif->cfg.arp_addr_cnt) {
enabled |= IWL_D3_PROTO_OFFLOAD_ARP | IWL_D3_PROTO_IPV4_VALID;
cmd->common.host_ipv4_addr = vif->cfg.arp_addr_list[0];
ether_addr_copy(cmd->common.arp_mac_addr, vif->addr);
}
enabled |= IWL_D3_PROTO_OFFLOAD_BTM;
cmd->common.enabled = cpu_to_le32(enabled);
cmd->sta_id = cpu_to_le32(ap_sta_id);
hcmd.data[0] = cmd;
return iwl_mld_send_cmd(mld, &hcmd);
}
static int
iwl_mld_wowlan_config(struct iwl_mld *mld, struct ieee80211_vif *bss_vif,
struct cfg80211_wowlan *wowlan)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(bss_vif);
struct ieee80211_sta *ap_sta = mld_vif->ap_sta;
struct iwl_wowlan_config_cmd wowlan_config_cmd = {
.offloading_tid = IWL_WOWLAN_OFFLOAD_TID,
};
u32 sta_id_mask;
int ap_sta_id, ret;
int link_id = iwl_mld_get_primary_link(bss_vif);
struct ieee80211_bss_conf *link_conf;
ret = iwl_mld_block_emlsr_sync(mld, bss_vif,
IWL_MLD_EMLSR_BLOCKED_WOWLAN, link_id);
if (ret)
return ret;
link_conf = link_conf_dereference_protected(bss_vif, link_id);
if (WARN_ON(!ap_sta || !link_conf))
return -EINVAL;
sta_id_mask = iwl_mld_fw_sta_id_mask(mld, ap_sta);
if (WARN_ON(hweight32(sta_id_mask) != 1))
return -EINVAL;
ap_sta_id = __ffs(sta_id_mask);
wowlan_config_cmd.sta_id = ap_sta_id;
ret = iwl_mld_ensure_queue(mld,
ap_sta->txq[wowlan_config_cmd.offloading_tid]);
if (ret)
return ret;
iwl_mld_set_wowlan_config_cmd(mld, wowlan,
&wowlan_config_cmd, ap_sta);
ret = iwl_mld_send_cmd_pdu(mld, WOWLAN_CONFIGURATION,
&wowlan_config_cmd);
if (ret)
return ret;
ret = iwl_mld_suspend_send_security_cmds(mld, bss_vif, mld_vif,
ap_sta_id);
if (ret)
return ret;
ret = iwl_mld_send_patterns(mld, wowlan, ap_sta_id);
if (ret)
return ret;
ret = iwl_mld_send_proto_offload(mld, bss_vif, ap_sta_id);
if (ret)
return ret;
iwl_mld_enable_beacon_filter(mld, link_conf, true);
return iwl_mld_update_mac_power(mld, bss_vif, true);
}
int iwl_mld_wowlan_suspend(struct iwl_mld *mld, struct cfg80211_wowlan *wowlan)
{
struct ieee80211_vif *bss_vif;
lockdep_assert_wiphy(mld->wiphy);
if (WARN_ON(!wowlan))
return 1;
IWL_DEBUG_WOWLAN(mld, "Starting the wowlan suspend flow\n");
bss_vif = iwl_mld_get_bss_vif(mld);
if (WARN_ON(!bss_vif))
return 1;
if (!bss_vif->cfg.assoc) {
int ret;
/* If we're not associated, this must be netdetect */
if (WARN_ON(!wowlan->nd_config))
return 1;
ret = iwl_mld_netdetect_config(mld, bss_vif, wowlan);
if (!ret)
mld->netdetect = true;
return ret;
}
return iwl_mld_wowlan_config(mld, bss_vif, wowlan);
}
/* Returns 0 on success, 1 if an error occurred in firmware during d3,
* A negative value is expected only in unrecovreable cases.
*/
int iwl_mld_wowlan_resume(struct iwl_mld *mld)
{
struct ieee80211_vif *bss_vif;
struct ieee80211_bss_conf *link_conf;
struct iwl_mld_netdetect_res netdetect_res;
struct iwl_mld_resume_data resume_data = {
.notifs_expected =
IWL_D3_NOTIF_WOWLAN_INFO |
IWL_D3_NOTIF_D3_END_NOTIF,
.netdetect_res = &netdetect_res,
};
int link_id;
int ret;
bool fw_err = false;
lockdep_assert_wiphy(mld->wiphy);
IWL_DEBUG_WOWLAN(mld, "Starting the wowlan resume flow\n");
if (!mld->fw_status.in_d3) {
IWL_DEBUG_WOWLAN(mld,
"Device_powered_off() was called during wowlan\n");
goto err;
}
mld->fw_status.resuming = true;
mld->fw_status.in_d3 = false;
mld->scan.last_start_time_jiffies = jiffies;
bss_vif = iwl_mld_get_bss_vif(mld);
if (WARN_ON(!bss_vif))
goto err;
/* We can't have several links upon wowlan entry,
* this is enforced in the suspend flow.
*/
WARN_ON(hweight16(bss_vif->active_links) > 1);
link_id = bss_vif->active_links ? __ffs(bss_vif->active_links) : 0;
link_conf = link_conf_dereference_protected(bss_vif, link_id);
if (WARN_ON(!link_conf))
goto err;
iwl_fw_dbg_read_d3_debug_data(&mld->fwrt);
resume_data.wowlan_status = kzalloc(sizeof(*resume_data.wowlan_status),
GFP_KERNEL);
if (!resume_data.wowlan_status)
return -ENOMEM;
if (mld->netdetect)
resume_data.notifs_expected |= IWL_D3_ND_MATCH_INFO;
ret = iwl_mld_wait_d3_notif(mld, &resume_data, true);
if (ret) {
IWL_ERR(mld, "Couldn't get the d3 notifs %d\n", ret);
fw_err = true;
goto err;
}
if (resume_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) {
mld->fw_status.in_hw_restart = true;
goto process_wakeup_results;
}
iwl_mld_update_changed_regdomain(mld);
iwl_mld_update_mac_power(mld, bss_vif, false);
iwl_mld_enable_beacon_filter(mld, link_conf, false);
iwl_mld_update_device_power(mld, false);
if (mld->netdetect)
ret = iwl_mld_scan_stop(mld, IWL_MLD_SCAN_NETDETECT, false);
process_wakeup_results:
if (mld->netdetect) {
iwl_mld_process_netdetect_res(mld, bss_vif, &resume_data);
mld->netdetect = false;
} else {
bool keep_connection =
iwl_mld_process_wowlan_status(mld, bss_vif,
resume_data.wowlan_status);
/* EMLSR state will be cleared if the connection is not kept */
if (keep_connection)
iwl_mld_unblock_emlsr(mld, bss_vif,
IWL_MLD_EMLSR_BLOCKED_WOWLAN);
else
ieee80211_resume_disconnect(bss_vif);
}
goto out;
err:
if (fw_err) {
mld->trans->state = IWL_TRANS_NO_FW;
set_bit(STATUS_FW_ERROR, &mld->trans->status);
}
mld->fw_status.in_hw_restart = true;
ret = 1;
out:
mld->fw_status.resuming = false;
if (resume_data.wowlan_status) {
kfree(resume_data.wowlan_status->wake_packet);
kfree(resume_data.wowlan_status);
}
return ret;
}