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1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Export the iSCSI boot info to userland via sysfs.
4  *
5  * Copyright (C) 2010 Red Hat, Inc.  All rights reserved.
6  * Copyright (C) 2010 Mike Christie
7  */
8 #ifndef _ISCSI_BOOT_SYSFS_
9 #define _ISCSI_BOOT_SYSFS_
10 
11 /*
12  * The text attributes names for each of the kobjects.
13 */
14 enum iscsi_boot_eth_properties_enum {
15 	ISCSI_BOOT_ETH_INDEX,
16 	ISCSI_BOOT_ETH_FLAGS,
17 	ISCSI_BOOT_ETH_IP_ADDR,
18 	ISCSI_BOOT_ETH_PREFIX_LEN,
19 	ISCSI_BOOT_ETH_SUBNET_MASK,
20 	ISCSI_BOOT_ETH_ORIGIN,
21 	ISCSI_BOOT_ETH_GATEWAY,
22 	ISCSI_BOOT_ETH_PRIMARY_DNS,
23 	ISCSI_BOOT_ETH_SECONDARY_DNS,
24 	ISCSI_BOOT_ETH_DHCP,
25 	ISCSI_BOOT_ETH_VLAN,
26 	ISCSI_BOOT_ETH_MAC,
27 	/* eth_pci_bdf - this is replaced by link to the device itself. */
28 	ISCSI_BOOT_ETH_HOSTNAME,
29 	ISCSI_BOOT_ETH_END_MARKER,
30 };
31 
32 enum iscsi_boot_tgt_properties_enum {
33 	ISCSI_BOOT_TGT_INDEX,
34 	ISCSI_BOOT_TGT_FLAGS,
35 	ISCSI_BOOT_TGT_IP_ADDR,
36 	ISCSI_BOOT_TGT_PORT,
37 	ISCSI_BOOT_TGT_LUN,
38 	ISCSI_BOOT_TGT_CHAP_TYPE,
39 	ISCSI_BOOT_TGT_NIC_ASSOC,
40 	ISCSI_BOOT_TGT_NAME,
41 	ISCSI_BOOT_TGT_CHAP_NAME,
42 	ISCSI_BOOT_TGT_CHAP_SECRET,
43 	ISCSI_BOOT_TGT_REV_CHAP_NAME,
44 	ISCSI_BOOT_TGT_REV_CHAP_SECRET,
45 	ISCSI_BOOT_TGT_END_MARKER,
46 };
47 
48 enum iscsi_boot_initiator_properties_enum {
49 	ISCSI_BOOT_INI_INDEX,
50 	ISCSI_BOOT_INI_FLAGS,
51 	ISCSI_BOOT_INI_ISNS_SERVER,
52 	ISCSI_BOOT_INI_SLP_SERVER,
53 	ISCSI_BOOT_INI_PRI_RADIUS_SERVER,
54 	ISCSI_BOOT_INI_SEC_RADIUS_SERVER,
55 	ISCSI_BOOT_INI_INITIATOR_NAME,
56 	ISCSI_BOOT_INI_END_MARKER,
57 };
58 
59 enum iscsi_boot_acpitbl_properties_enum {
60 	ISCSI_BOOT_ACPITBL_SIGNATURE,
61 	ISCSI_BOOT_ACPITBL_OEM_ID,
62 	ISCSI_BOOT_ACPITBL_OEM_TABLE_ID,
63 };
64 
65 struct attribute_group;
66 
67 struct iscsi_boot_kobj {
68 	struct kobject kobj;
69 	struct attribute_group *attr_group;
70 	struct list_head list;
71 
72 	/*
73 	 * Pointer to store driver specific info. If set this will
74 	 * be freed for the LLD when the kobj release function is called.
75 	 */
76 	void *data;
77 	/*
78 	 * Driver specific show function.
79 	 *
80 	 * The enum of the type. This can be any value of the above
81 	 * properties.
82 	 */
83 	ssize_t (*show) (void *data, int type, char *buf);
84 
85 	/*
86 	 * Drivers specific visibility function.
87 	 * The function should return if they the attr should be readable
88 	 * writable or should not be shown.
89 	 *
90 	 * The enum of the type. This can be any value of the above
91 	 * properties.
92 	 */
93 	umode_t (*is_visible) (void *data, int type);
94 
95 	/*
96 	 * Driver specific release function.
97 	 *
98 	 * The function should free the data passed in.
99 	 */
100 	void (*release) (void *data);
101 };
102 
103 struct iscsi_boot_kset {
104 	struct list_head kobj_list;
105 	struct kset *kset;
106 };
107 
108 struct iscsi_boot_kobj *
109 iscsi_boot_create_initiator(struct iscsi_boot_kset *boot_kset, int index,
110 			    void *data,
111 			    ssize_t (*show) (void *data, int type, char *buf),
112 			    umode_t (*is_visible) (void *data, int type),
113 			    void (*release) (void *data));
114 
115 struct iscsi_boot_kobj *
116 iscsi_boot_create_ethernet(struct iscsi_boot_kset *boot_kset, int index,
117 			   void *data,
118 			   ssize_t (*show) (void *data, int type, char *buf),
119 			   umode_t (*is_visible) (void *data, int type),
120 			   void (*release) (void *data));
121 struct iscsi_boot_kobj *
122 iscsi_boot_create_target(struct iscsi_boot_kset *boot_kset, int index,
123 			 void *data,
124 			 ssize_t (*show) (void *data, int type, char *buf),
125 			 umode_t (*is_visible) (void *data, int type),
126 			 void (*release) (void *data));
127 
128 struct iscsi_boot_kobj *
129 iscsi_boot_create_acpitbl(struct iscsi_boot_kset *boot_kset, int index,
130 			  void *data,
131 			  ssize_t (*show)(void *data, int type, char *buf),
132 			  umode_t (*is_visible)(void *data, int type),
133 			  void (*release)(void *data));
134 
135 struct iscsi_boot_kset *iscsi_boot_create_kset(const char *set_name);
136 struct iscsi_boot_kset *iscsi_boot_create_host_kset(unsigned int hostno);
137 void iscsi_boot_destroy_kset(struct iscsi_boot_kset *boot_kset);
138 
139 #endif
140