1  /*
2   * Copyright (c) 2011-2020 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_wowl_del_ptrn.c
20   *
21   * implementation for creating sysfs file wowl_del_ptrn
22   */
23  
24  #include <wlan_hdd_includes.h>
25  #include <wlan_hdd_sysfs.h>
26  #include "osif_vdev_sync.h"
27  #include "wlan_hdd_wowl.h"
28  #include <wlan_hdd_sysfs_wowl_del_ptrn.h>
29  
30  static ssize_t
__hdd_sysfs_wowl_del_ptrn_store(struct net_device * net_dev,char const * buf,size_t count)31  __hdd_sysfs_wowl_del_ptrn_store(struct net_device *net_dev,
32  				char const *buf,
33  				size_t count)
34  {
35  	struct hdd_adapter *adapter = netdev_priv(net_dev);
36  	struct hdd_context *hdd_ctx;
37  	char *buf_local = NULL;
38  	int ret;
39  
40  	if (hdd_validate_adapter(adapter))
41  		return -EINVAL;
42  
43  	hdd_ctx = WLAN_HDD_GET_CTX(adapter);
44  	ret = wlan_hdd_validate_context(hdd_ctx);
45  	if (ret)
46  		return ret;
47  
48  	if (!wlan_hdd_validate_modules_state(hdd_ctx))
49  		return -EINVAL;
50  
51  	if (count > MAX_CMD_INPUT)
52  		return -EINVAL;
53  
54  	buf_local = (char *)qdf_mem_malloc(sizeof(char) * count);
55  	if (!buf_local)
56  		return -EINVAL;
57  
58  	strlcpy(buf_local, buf, count);
59  
60  	buf_local[count - 1] = '\0';
61  
62  	hdd_debug("wowl_del_ptrn: count %zu buf_local:(%s)",
63  		  count, buf_local);
64  
65  	if (!hdd_del_wowl_ptrn(adapter, buf_local)) {
66  		hdd_err_rl("Failed to delete wowl ptrn");
67  		qdf_mem_free(buf_local);
68  		return -EINVAL;
69  	}
70  
71  	qdf_mem_free(buf_local);
72  	return count;
73  }
74  
75  static ssize_t
hdd_sysfs_wowl_del_ptrn_store(struct device * dev,struct device_attribute * attr,char const * buf,size_t count)76  hdd_sysfs_wowl_del_ptrn_store(struct device *dev,
77  			      struct device_attribute *attr,
78  			      char const *buf, size_t count)
79  {
80  	struct net_device *net_dev = container_of(dev, struct net_device, dev);
81  	struct osif_vdev_sync *vdev_sync;
82  	ssize_t err_size;
83  
84  	err_size = osif_vdev_sync_op_start(net_dev, &vdev_sync);
85  	if (err_size)
86  		return err_size;
87  
88  	err_size = __hdd_sysfs_wowl_del_ptrn_store(net_dev, buf, count);
89  
90  	osif_vdev_sync_op_stop(vdev_sync);
91  
92  	return err_size;
93  }
94  
95  static DEVICE_ATTR(wowl_del_ptrn, 0220,
96  		   NULL, hdd_sysfs_wowl_del_ptrn_store);
97  
hdd_sysfs_wowl_del_ptrn_create(struct hdd_adapter * adapter)98  int hdd_sysfs_wowl_del_ptrn_create(struct hdd_adapter *adapter)
99  {
100  	int error;
101  
102  	error = device_create_file(&adapter->dev->dev,
103  				   &dev_attr_wowl_del_ptrn);
104  	if (error)
105  		hdd_err("could not create wowl_del_ptrn sysfs file");
106  
107  	return error;
108  }
109  
hdd_sysfs_wowl_del_ptrn_destroy(struct hdd_adapter * adapter)110  void hdd_sysfs_wowl_del_ptrn_destroy(struct hdd_adapter *adapter)
111  {
112  	device_remove_file(&adapter->dev->dev, &dev_attr_wowl_del_ptrn);
113  }
114