1 /*
2 * Copyright (c) 2020, The Linux Foundation. All rights reserved.
3 * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 /**
19 * DOC: wlan_hdd_sysfs_sta_info.c
20 *
21 * implementation for creating sysfs file sta_info
22 */
23
24 #include <wlan_hdd_includes.h>
25 #include "osif_vdev_sync.h"
26 #include "wlan_hdd_sysfs_sta_info.h"
27
__show_sta_info(struct net_device * net_dev,char * buf)28 static ssize_t __show_sta_info(struct net_device *net_dev, char *buf)
29 {
30 struct hdd_adapter *adapter = netdev_priv(net_dev);
31 struct hdd_context *hdd_ctx;
32 struct hdd_station_info *sta, *tmp = NULL;
33 int ret_val;
34
35 hdd_enter_dev(net_dev);
36
37 ret_val = hdd_validate_adapter(adapter);
38 if (0 != ret_val)
39 goto exit;
40
41 if (adapter->device_mode != QDF_SAP_MODE)
42 goto exit;
43
44 hdd_ctx = WLAN_HDD_GET_CTX(adapter);
45 ret_val = wlan_hdd_validate_context(hdd_ctx);
46 if (0 != ret_val)
47 goto exit;
48
49 ret_val = scnprintf(buf, PAGE_SIZE,
50 "%s get_sta_info:\nstaAddress\n",
51 net_dev->name);
52
53 hdd_for_each_sta_ref_safe(adapter->sta_info_list, sta, tmp,
54 STA_INFO_SHOW) {
55 if (QDF_IS_ADDR_BROADCAST(sta->sta_mac.bytes)) {
56 hdd_put_sta_info_ref(&adapter->sta_info_list, &sta,
57 true, STA_INFO_SHOW);
58 continue;
59 }
60 ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val,
61 QDF_MAC_ADDR_FMT " ecsa=%d\n",
62 QDF_MAC_ADDR_REF(sta->sta_mac.bytes),
63 sta->ecsa_capable);
64
65 hdd_put_sta_info_ref(&adapter->sta_info_list, &sta, true,
66 STA_INFO_SHOW);
67 }
68
69 exit:
70 hdd_exit();
71 return ret_val;
72 }
73
show_sta_info(struct device * dev,struct device_attribute * attr,char * buf)74 static ssize_t show_sta_info(struct device *dev,
75 struct device_attribute *attr,
76 char *buf)
77 {
78 struct net_device *net_dev = container_of(dev, struct net_device, dev);
79 struct osif_vdev_sync *vdev_sync;
80 ssize_t err_size;
81
82 err_size = osif_vdev_sync_op_start(net_dev, &vdev_sync);
83 if (err_size)
84 return err_size;
85
86 err_size = __show_sta_info(net_dev, buf);
87
88 osif_vdev_sync_op_stop(vdev_sync);
89
90 return err_size;
91 }
92
93 static DEVICE_ATTR(sta_info, 0444, show_sta_info, NULL);
94
hdd_sysfs_sta_info_interface_create(struct hdd_adapter * adapter)95 void hdd_sysfs_sta_info_interface_create(struct hdd_adapter *adapter)
96 {
97 int error;
98
99 error = device_create_file(&adapter->dev->dev, &dev_attr_sta_info);
100 if (error)
101 hdd_err("Could not create sta_info sysfs file");
102 }
103
hdd_sysfs_sta_info_interface_destroy(struct hdd_adapter * adapter)104 void hdd_sysfs_sta_info_interface_destroy(struct hdd_adapter *adapter)
105 {
106 device_remove_file(&adapter->dev->dev, &dev_attr_sta_info);
107 }
108