1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #include "iscsi_target_core.h" /* struct iscsit_cmd */ |
3 | |
4 | struct sockaddr_storage; |
5 | |
6 | struct iscsit_transport { |
7 | #define ISCSIT_TRANSPORT_NAME 16 |
8 | char name[ISCSIT_TRANSPORT_NAME]; |
9 | int transport_type; |
10 | bool rdma_shutdown; |
11 | int priv_size; |
12 | struct module *owner; |
13 | struct list_head t_node; |
14 | int (*iscsit_setup_np)(struct iscsi_np *, struct sockaddr_storage *); |
15 | int (*iscsit_accept_np)(struct iscsi_np *, struct iscsit_conn *); |
16 | void (*iscsit_free_np)(struct iscsi_np *); |
17 | void (*iscsit_wait_conn)(struct iscsit_conn *); |
18 | void (*iscsit_free_conn)(struct iscsit_conn *); |
19 | int (*iscsit_get_login_rx)(struct iscsit_conn *, struct iscsi_login *); |
20 | int (*iscsit_put_login_tx)(struct iscsit_conn *, struct iscsi_login *, u32); |
21 | int (*iscsit_immediate_queue)(struct iscsit_conn *, struct iscsit_cmd *, int); |
22 | int (*iscsit_response_queue)(struct iscsit_conn *, struct iscsit_cmd *, int); |
23 | int (*iscsit_get_dataout)(struct iscsit_conn *, struct iscsit_cmd *, bool); |
24 | int (*iscsit_queue_data_in)(struct iscsit_conn *, struct iscsit_cmd *); |
25 | int (*iscsit_queue_status)(struct iscsit_conn *, struct iscsit_cmd *); |
26 | void (*iscsit_aborted_task)(struct iscsit_conn *, struct iscsit_cmd *); |
27 | int (*iscsit_xmit_pdu)(struct iscsit_conn *, struct iscsit_cmd *, |
28 | struct iscsi_datain_req *, const void *, u32); |
29 | void (*iscsit_unmap_cmd)(struct iscsit_conn *, struct iscsit_cmd *); |
30 | void (*iscsit_get_rx_pdu)(struct iscsit_conn *); |
31 | int (*iscsit_validate_params)(struct iscsit_conn *); |
32 | void (*iscsit_get_r2t_ttt)(struct iscsit_conn *, struct iscsit_cmd *, |
33 | struct iscsi_r2t *); |
34 | enum target_prot_op (*iscsit_get_sup_prot_ops)(struct iscsit_conn *); |
35 | }; |
36 | |
37 | static inline void *iscsit_priv_cmd(struct iscsit_cmd *cmd) |
38 | { |
39 | return (void *)(cmd + 1); |
40 | } |
41 | |
42 | /* |
43 | * From iscsi_target_transport.c |
44 | */ |
45 | |
46 | extern void iscsit_register_transport(struct iscsit_transport *); |
47 | extern void iscsit_unregister_transport(struct iscsit_transport *); |
48 | extern struct iscsit_transport *iscsit_get_transport(int); |
49 | extern void iscsit_put_transport(struct iscsit_transport *); |
50 | |
51 | /* |
52 | * From iscsi_target.c |
53 | */ |
54 | extern int iscsit_setup_scsi_cmd(struct iscsit_conn *, struct iscsit_cmd *, |
55 | unsigned char *); |
56 | extern void iscsit_set_unsolicited_dataout(struct iscsit_cmd *); |
57 | extern int iscsit_process_scsi_cmd(struct iscsit_conn *, struct iscsit_cmd *, |
58 | struct iscsi_scsi_req *); |
59 | extern int |
60 | __iscsit_check_dataout_hdr(struct iscsit_conn *, void *, |
61 | struct iscsit_cmd *, u32, bool *); |
62 | extern int |
63 | iscsit_check_dataout_hdr(struct iscsit_conn *conn, void *buf, |
64 | struct iscsit_cmd **out_cmd); |
65 | extern int iscsit_check_dataout_payload(struct iscsit_cmd *, struct iscsi_data *, |
66 | bool); |
67 | extern int iscsit_setup_nop_out(struct iscsit_conn *, struct iscsit_cmd *, |
68 | struct iscsi_nopout *); |
69 | extern int iscsit_process_nop_out(struct iscsit_conn *, struct iscsit_cmd *, |
70 | struct iscsi_nopout *); |
71 | extern int iscsit_handle_logout_cmd(struct iscsit_conn *, struct iscsit_cmd *, |
72 | unsigned char *); |
73 | extern int iscsit_handle_task_mgt_cmd(struct iscsit_conn *, struct iscsit_cmd *, |
74 | unsigned char *); |
75 | extern int iscsit_setup_text_cmd(struct iscsit_conn *, struct iscsit_cmd *, |
76 | struct iscsi_text *); |
77 | extern int iscsit_process_text_cmd(struct iscsit_conn *, struct iscsit_cmd *, |
78 | struct iscsi_text *); |
79 | extern void iscsit_build_rsp_pdu(struct iscsit_cmd *, struct iscsit_conn *, |
80 | bool, struct iscsi_scsi_rsp *); |
81 | extern void iscsit_build_nopin_rsp(struct iscsit_cmd *, struct iscsit_conn *, |
82 | struct iscsi_nopin *, bool); |
83 | extern void iscsit_build_task_mgt_rsp(struct iscsit_cmd *, struct iscsit_conn *, |
84 | struct iscsi_tm_rsp *); |
85 | extern int iscsit_build_text_rsp(struct iscsit_cmd *, struct iscsit_conn *, |
86 | struct iscsi_text_rsp *, |
87 | enum iscsit_transport_type); |
88 | extern void iscsit_build_reject(struct iscsit_cmd *, struct iscsit_conn *, |
89 | struct iscsi_reject *); |
90 | extern int iscsit_build_logout_rsp(struct iscsit_cmd *, struct iscsit_conn *, |
91 | struct iscsi_logout_rsp *); |
92 | extern int iscsit_logout_post_handler(struct iscsit_cmd *, struct iscsit_conn *); |
93 | extern int iscsit_queue_rsp(struct iscsit_conn *, struct iscsit_cmd *); |
94 | extern void iscsit_aborted_task(struct iscsit_conn *, struct iscsit_cmd *); |
95 | extern int iscsit_add_reject(struct iscsit_conn *, u8, unsigned char *); |
96 | extern int iscsit_reject_cmd(struct iscsit_cmd *, u8, unsigned char *); |
97 | extern int iscsit_handle_snack(struct iscsit_conn *, unsigned char *); |
98 | extern void iscsit_build_datain_pdu(struct iscsit_cmd *, struct iscsit_conn *, |
99 | struct iscsi_datain *, |
100 | struct iscsi_data_rsp *, bool); |
101 | extern int iscsit_build_r2ts_for_cmd(struct iscsit_conn *, struct iscsit_cmd *, |
102 | bool); |
103 | extern int iscsit_immediate_queue(struct iscsit_conn *, struct iscsit_cmd *, int); |
104 | extern int iscsit_response_queue(struct iscsit_conn *, struct iscsit_cmd *, int); |
105 | /* |
106 | * From iscsi_target_device.c |
107 | */ |
108 | extern void iscsit_increment_maxcmdsn(struct iscsit_cmd *, struct iscsit_session *); |
109 | /* |
110 | * From iscsi_target_erl0.c |
111 | */ |
112 | extern void iscsit_cause_connection_reinstatement(struct iscsit_conn *, int); |
113 | /* |
114 | * From iscsi_target_erl1.c |
115 | */ |
116 | extern void iscsit_stop_dataout_timer(struct iscsit_cmd *); |
117 | |
118 | /* |
119 | * From iscsi_target_tmr.c |
120 | */ |
121 | extern int iscsit_tmr_post_handler(struct iscsit_cmd *, struct iscsit_conn *); |
122 | |
123 | /* |
124 | * From iscsi_target_util.c |
125 | */ |
126 | extern struct iscsit_cmd *iscsit_allocate_cmd(struct iscsit_conn *, int); |
127 | extern int iscsit_sequence_cmd(struct iscsit_conn *, struct iscsit_cmd *, |
128 | unsigned char *, __be32); |
129 | extern void iscsit_release_cmd(struct iscsit_cmd *); |
130 | extern void iscsit_free_cmd(struct iscsit_cmd *, bool); |
131 | extern void iscsit_add_cmd_to_immediate_queue(struct iscsit_cmd *, |
132 | struct iscsit_conn *, u8); |
133 | extern struct iscsit_cmd * |
134 | iscsit_find_cmd_from_itt_or_dump(struct iscsit_conn *conn, |
135 | itt_t init_task_tag, u32 length); |
136 | |
137 | /* |
138 | * From iscsi_target_nego.c |
139 | */ |
140 | extern int iscsi_target_check_login_request(struct iscsit_conn *, |
141 | struct iscsi_login *); |
142 | |
143 | /* |
144 | * From iscsi_target_login.c |
145 | */ |
146 | extern __printf(2, 3) int iscsi_change_param_sprintf( |
147 | struct iscsit_conn *, const char *, ...); |
148 | |
149 | /* |
150 | * From iscsi_target_parameters.c |
151 | */ |
152 | extern struct iscsi_param *iscsi_find_param_from_key( |
153 | char *, struct iscsi_param_list *); |
154 | |