| /* |
| * Copyright (c) 2020, The Linux Foundation. All rights reserved. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| #include <qdf_hang_event_notifier.h> |
| #include <qdf_notifier.h> |
| #include <wlan_hdd_hang_event.h> |
| #include <wlan_objmgr_vdev_obj.h> |
| #include "wlan_hdd_object_manager.h" |
| #include <qdf_types.h> |
| |
| struct hdd_hang_event_fixed_param { |
| uint16_t tlv_header; |
| uint8_t vdev_id; |
| uint8_t vdev_opmode; |
| uint8_t vdev_state; |
| uint8_t vdev_substate; |
| } qdf_packed; |
| |
| struct hdd_scan_fixed_param { |
| uint16_t tlv_header; |
| uint8_t last_scan_reject_vdev_id; |
| enum scan_reject_states last_scan_reject_reason; |
| unsigned long last_scan_reject_timestamp; |
| uint8_t scan_reject_cnt; |
| } qdf_packed; |
| |
| static int wlan_hdd_recovery_notifier_call(struct notifier_block *block, |
| unsigned long state, |
| void *data) |
| { |
| qdf_notif_block *notif_block = qdf_container_of(block, qdf_notif_block, |
| notif_block); |
| struct hdd_context *hdd_ctx; |
| struct qdf_notifer_data *hdd_hang_data = data; |
| uint8_t *hdd_buf_ptr; |
| struct hdd_adapter *adapter; |
| uint32_t total_len; |
| struct wlan_objmgr_vdev *vdev; |
| struct hdd_hang_event_fixed_param *cmd; |
| struct hdd_scan_fixed_param *cmd_scan; |
| |
| if (!data) |
| return NOTIFY_STOP_MASK; |
| |
| hdd_ctx = notif_block->priv_data; |
| if (!hdd_ctx) |
| return NOTIFY_STOP_MASK; |
| |
| if (state == QDF_SCAN_ATTEMPT_FAILURES) { |
| total_len = sizeof(*cmd_scan); |
| hdd_buf_ptr = hdd_hang_data->hang_data + hdd_hang_data->offset; |
| if (hdd_hang_data->offset + total_len > QDF_WLAN_HANG_FW_OFFSET) |
| return NOTIFY_STOP_MASK; |
| cmd_scan = (struct hdd_scan_fixed_param *)hdd_buf_ptr; |
| QDF_HANG_EVT_SET_HDR(&cmd_scan->tlv_header, |
| HANG_EVT_TAG_OS_IF_SCAN, |
| QDF_HANG_GET_STRUCT_TLVLEN(struct hdd_scan_fixed_param)); |
| cmd_scan->last_scan_reject_vdev_id = |
| hdd_ctx->last_scan_reject_vdev_id; |
| cmd_scan->last_scan_reject_reason = |
| hdd_ctx->last_scan_reject_reason; |
| cmd_scan->scan_reject_cnt = |
| hdd_ctx->scan_reject_cnt; |
| hdd_hang_data->offset += total_len; |
| } |
| |
| hdd_for_each_adapter_dev_held(hdd_ctx, adapter) { |
| vdev = hdd_objmgr_get_vdev(adapter); |
| if (!vdev) { |
| dev_put(adapter->dev); |
| continue; |
| } |
| total_len = sizeof(*cmd); |
| hdd_buf_ptr = hdd_hang_data->hang_data + hdd_hang_data->offset; |
| if (hdd_hang_data->offset + total_len > |
| QDF_WLAN_HANG_FW_OFFSET) { |
| hdd_objmgr_put_vdev(vdev); |
| dev_put(adapter->dev); |
| return NOTIFY_STOP_MASK; |
| } |
| cmd = (struct hdd_hang_event_fixed_param *)hdd_buf_ptr; |
| QDF_HANG_EVT_SET_HDR(&cmd->tlv_header, |
| HANG_EVT_TAG_OS_IF, |
| QDF_HANG_GET_STRUCT_TLVLEN(struct hdd_hang_event_fixed_param)); |
| cmd->vdev_id = wlan_vdev_get_id(vdev); |
| cmd->vdev_opmode = wlan_vdev_mlme_get_opmode(vdev); |
| cmd->vdev_state = wlan_vdev_mlme_get_state(vdev); |
| cmd->vdev_substate = wlan_vdev_mlme_get_substate(vdev); |
| hdd_hang_data->offset += total_len; |
| hdd_objmgr_put_vdev(vdev); |
| dev_put(adapter->dev); |
| } |
| |
| return NOTIFY_OK; |
| } |
| |
| static qdf_notif_block hdd_recovery_notifier = { |
| .notif_block.notifier_call = wlan_hdd_recovery_notifier_call, |
| }; |
| |
| QDF_STATUS wlan_hdd_hang_event_notifier_register(struct hdd_context *hdd_ctx) |
| { |
| hdd_recovery_notifier.priv_data = hdd_ctx; |
| return qdf_hang_event_register_notifier(&hdd_recovery_notifier); |
| } |
| |
| QDF_STATUS wlan_hdd_hang_event_notifier_unregister(void) |
| { |
| return qdf_hang_event_unregister_notifier(&hdd_recovery_notifier); |
| } |