1 /*
2 * Copyright (c) 2011-2020, 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_he_bss_color.c
20 *
21 * implementation for creating sysfs file he_bss_color
22 */
23
24 #include <wlan_hdd_includes.h>
25 #include "osif_vdev_sync.h"
26 #include <wlan_hdd_sysfs.h>
27 #include "wlan_hdd_sysfs_he_bss_color.h"
28 #include <sme_api.h>
29
30 static ssize_t
__hdd_sysfs_he_bss_color_store(struct net_device * net_dev,char const * buf,size_t count)31 __hdd_sysfs_he_bss_color_store(struct net_device *net_dev,
32 char const *buf, size_t count)
33 {
34 struct hdd_adapter *adapter = netdev_priv(net_dev);
35 char buf_local[MAX_SYSFS_USER_COMMAND_SIZE_LENGTH + 1];
36 struct hdd_context *hdd_ctx;
37 char *sptr, *token;
38 QDF_STATUS status;
39 int value, ret;
40
41 if (hdd_validate_adapter(adapter))
42 return -EINVAL;
43
44 hdd_ctx = WLAN_HDD_GET_CTX(adapter);
45 ret = wlan_hdd_validate_context(hdd_ctx);
46 if (ret != 0)
47 return ret;
48
49 if (!wlan_hdd_validate_modules_state(hdd_ctx))
50 return -EINVAL;
51
52 ret = hdd_sysfs_validate_and_copy_buf(buf_local, sizeof(buf_local),
53 buf, count);
54
55 if (ret) {
56 hdd_err_rl("invalid input");
57 return ret;
58 }
59
60 sptr = buf_local;
61 token = strsep(&sptr, " ");
62 if (!token)
63 return -EINVAL;
64 if (kstrtou32(token, 0, &value))
65 return -EINVAL;
66
67 status = sme_set_he_bss_color(hdd_ctx->mac_handle,
68 adapter->deflink->vdev_id,
69 value);
70 if (QDF_IS_STATUS_ERROR(status)) {
71 hdd_err_rl("Failed to set HE BSS color, status %d", status);
72 return -EINVAL;
73 }
74
75 return count;
76 }
77
78 static ssize_t
hdd_sysfs_he_bss_color_store(struct device * dev,struct device_attribute * attr,char const * buf,size_t count)79 hdd_sysfs_he_bss_color_store(struct device *dev,
80 struct device_attribute *attr,
81 char const *buf, size_t count)
82 {
83 struct net_device *net_dev = container_of(dev, struct net_device, dev);
84 struct osif_vdev_sync *vdev_sync;
85 ssize_t errno_size;
86
87 errno_size = osif_vdev_sync_op_start(net_dev, &vdev_sync);
88 if (errno_size)
89 return errno_size;
90
91 errno_size = __hdd_sysfs_he_bss_color_store(net_dev, buf, count);
92
93 osif_vdev_sync_op_stop(vdev_sync);
94
95 return errno_size;
96 }
97
98 static DEVICE_ATTR(he_bss_color, 0220,
99 NULL, hdd_sysfs_he_bss_color_store);
100
hdd_sysfs_he_bss_color_create(struct hdd_adapter * adapter)101 int hdd_sysfs_he_bss_color_create(struct hdd_adapter *adapter)
102 {
103 int error;
104
105 error = device_create_file(&adapter->dev->dev, &dev_attr_he_bss_color);
106 if (error)
107 hdd_err("could not create he_bss_color sysfs file");
108
109 return error;
110 }
111
hdd_sysfs_he_bss_color_destroy(struct hdd_adapter * adapter)112 void hdd_sysfs_he_bss_color_destroy(struct hdd_adapter *adapter)
113 {
114 device_remove_file(&adapter->dev->dev, &dev_attr_he_bss_color);
115 }
116