1 /*
2 * Copyright (c) 2020, The Linux Foundation. All rights reserved.
3 * Copyright (c) 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_tdls_peers.c
20 *
21 * Implementation for creating sysfs file tdls_peers
22 */
23
24 #include <wlan_hdd_includes.h>
25 #include "osif_vdev_sync.h"
26 #include "wlan_hdd_object_manager.h"
27 #include "wlan_hdd_sysfs_tdls_peers.h"
28
29 /**
30 * __show_tdls_all_peers() - dump all TDLS peer info into output string
31 * @net_dev: net device
32 * @buf: output string buffer to hold the peer info
33 *
34 * Return: The size (in bytes) of the valid peer info in the output buffer
35 */
__show_tdls_all_peers(struct net_device * net_dev,char * buf)36 static int __show_tdls_all_peers(struct net_device *net_dev, char *buf)
37 {
38 struct hdd_adapter *adapter = netdev_priv(net_dev);
39 struct hdd_context *hdd_ctx;
40 struct wlan_objmgr_vdev *vdev;
41 int ret_val;
42
43 hdd_enter_dev(net_dev);
44
45 ret_val = scnprintf(buf, PAGE_SIZE, "%s getTdlsPeers:",
46 net_dev->name);
47
48 if (hdd_validate_adapter(adapter)) {
49 ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val,
50 "\nHDD adapter is not valid\n");
51 goto exit;
52 }
53
54 hdd_ctx = WLAN_HDD_GET_CTX(adapter);
55 if (0 != (wlan_hdd_validate_context(hdd_ctx))) {
56 ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val,
57 "\nHDD context is not valid\n");
58 goto exit;
59 }
60
61 if ((QDF_STA_MODE != adapter->device_mode) &&
62 (QDF_P2P_CLIENT_MODE != adapter->device_mode)) {
63 ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val,
64 "\nNo TDLS support for this adapter\n");
65 goto exit;
66 }
67
68 vdev = hdd_objmgr_get_vdev_by_user(adapter->deflink, WLAN_OSIF_TDLS_ID);
69 if (!vdev) {
70 ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val,
71 "\nVDEV is NULL\n");
72 goto exit;
73 }
74 ret_val += wlan_cfg80211_tdls_get_all_peers(vdev, buf + ret_val,
75 PAGE_SIZE - ret_val);
76 hdd_objmgr_put_vdev_by_user(vdev, WLAN_OSIF_TDLS_ID);
77
78 exit:
79 if ((PAGE_SIZE - ret_val) > 0)
80 ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val, "\n");
81
82 hdd_exit();
83 return ret_val;
84 }
85
show_tdls_all_peers(struct device * dev,struct device_attribute * attr,char * buf)86 static ssize_t show_tdls_all_peers(struct device *dev,
87 struct device_attribute *attr, char *buf)
88 {
89 struct net_device *net_dev = container_of(dev, struct net_device, dev);
90 struct osif_vdev_sync *vdev_sync;
91 ssize_t err_size;
92
93 err_size = osif_vdev_sync_op_start(net_dev, &vdev_sync);
94 if (err_size)
95 return err_size;
96
97 err_size = __show_tdls_all_peers(net_dev, buf);
98
99 osif_vdev_sync_op_stop(vdev_sync);
100
101 return err_size;
102 }
103
104 static DEVICE_ATTR(tdls_peers, 0444, show_tdls_all_peers, NULL);
105
hdd_sysfs_tdls_peers_interface_create(struct hdd_adapter * adapter)106 void hdd_sysfs_tdls_peers_interface_create(struct hdd_adapter *adapter)
107 {
108 int error;
109
110 error = device_create_file(&adapter->dev->dev,
111 &dev_attr_tdls_peers);
112 if (error)
113 hdd_err("could not create tdls_peers sysfs file");
114 }
115
hdd_sysfs_tdls_peers_interface_destroy(struct hdd_adapter * adapter)116 void hdd_sysfs_tdls_peers_interface_destroy(struct hdd_adapter *adapter)
117 {
118 device_remove_file(&adapter->dev->dev, &dev_attr_tdls_peers);
119 }
120