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