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path: root/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
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Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/d3.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/d3.c126
1 files changed, 98 insertions, 28 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
index f522cc105b53..77e70899c46e 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
@@ -1427,7 +1427,7 @@ struct iwl_wowlan_status_data {
u8 flags;
} igtk;
- u8 wake_packet[];
+ u8 *wake_packet;
};
static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
@@ -1480,7 +1480,7 @@ static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
wakeup.tcp_match = true;
- if (status->wake_packet_bufsize) {
+ if (status->wake_packet) {
int pktsize = status->wake_packet_bufsize;
int pktlen = status->wake_packet_length;
const u8 *pktdata = status->wake_packet;
@@ -1965,7 +1965,7 @@ iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
return NULL; \
} \
\
- status = kzalloc(sizeof(*status) + data_size, GFP_KERNEL); \
+ status = kzalloc(sizeof(*status), GFP_KERNEL); \
if (!status) \
return NULL; \
\
@@ -1984,8 +1984,18 @@ iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \
le32_to_cpu(data->wake_packet_length); \
status->wake_packet_bufsize = \
le32_to_cpu(data->wake_packet_bufsize); \
- memcpy(status->wake_packet, data->wake_packet, \
- status->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; \
}
@@ -2197,25 +2207,6 @@ out_free_resp:
return status;
}
-static struct iwl_wowlan_status_data *
-iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, u8 sta_id)
-{
- u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, OFFLOADS_QUERY_CMD,
- IWL_FW_CMD_VER_UNKNOWN);
- __le32 station_id = cpu_to_le32(sta_id);
- u32 cmd_size = cmd_ver != IWL_FW_CMD_VER_UNKNOWN ? sizeof(station_id) : 0;
-
- if (!mvm->net_detect) {
- /* only for tracing for now */
- int ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0,
- cmd_size, &station_id);
- if (ret)
- IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
- }
-
- return iwl_mvm_send_wowlan_get_status(mvm, sta_id);
-}
-
/* releases the MVM mutex */
static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
@@ -2525,9 +2516,11 @@ static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm,
/**
* 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
*/
enum iwl_d3_notif {
IWL_D3_NOTIF_WOWLAN_INFO = BIT(0),
+ IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1),
};
/* manage d3 resume data */
@@ -2553,10 +2546,9 @@ static void iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
/* 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_get_wakeup_status(mvm, 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) {
@@ -2578,6 +2570,55 @@ static void iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm,
}
}
+#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 bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{
@@ -2585,6 +2626,7 @@ static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
container_of(notif_wait, struct iwl_mvm, notif_wait);
struct iwl_d3_data *d3_data = data;
u32 len;
+ int ret;
switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): {
@@ -2601,6 +2643,31 @@ static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait,
len = iwl_rx_packet_payload_len(pkt);
iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status,
len);
+ 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;
}
default:
@@ -2618,7 +2685,8 @@ static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm,
bool test)
{
static const u16 d3_resume_notif[] = {
- WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION)
+ WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION),
+ WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION)
};
struct iwl_notification_wait wait_d3_notif;
int ret;
@@ -2751,6 +2819,8 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
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);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.