1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef ISCSI_TARGET_UTIL_H 3*4882a593Smuzhiyun #define ISCSI_TARGET_UTIL_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/types.h> 6*4882a593Smuzhiyun #include <scsi/iscsi_proto.h> /* itt_t */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #define MARKER_SIZE 8 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun struct iscsi_cmd; 11*4882a593Smuzhiyun struct iscsi_conn; 12*4882a593Smuzhiyun struct iscsi_conn_recovery; 13*4882a593Smuzhiyun struct iscsi_session; 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun extern int iscsit_add_r2t_to_list(struct iscsi_cmd *, u32, u32, int, u32); 16*4882a593Smuzhiyun extern struct iscsi_r2t *iscsit_get_r2t_for_eos(struct iscsi_cmd *, u32, u32); 17*4882a593Smuzhiyun extern struct iscsi_r2t *iscsit_get_r2t_from_list(struct iscsi_cmd *); 18*4882a593Smuzhiyun extern void iscsit_free_r2t(struct iscsi_r2t *, struct iscsi_cmd *); 19*4882a593Smuzhiyun extern void iscsit_free_r2ts_from_list(struct iscsi_cmd *); 20*4882a593Smuzhiyun extern struct iscsi_cmd *iscsit_alloc_cmd(struct iscsi_conn *, gfp_t); 21*4882a593Smuzhiyun extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, int); 22*4882a593Smuzhiyun extern struct iscsi_seq *iscsit_get_seq_holder_for_datain(struct iscsi_cmd *, u32); 23*4882a593Smuzhiyun extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *); 24*4882a593Smuzhiyun extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32); 25*4882a593Smuzhiyun extern int iscsit_sequence_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, 26*4882a593Smuzhiyun unsigned char * ,__be32 cmdsn); 27*4882a593Smuzhiyun extern int iscsit_check_unsolicited_dataout(struct iscsi_cmd *, unsigned char *); 28*4882a593Smuzhiyun extern struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump(struct iscsi_conn *, 29*4882a593Smuzhiyun itt_t, u32); 30*4882a593Smuzhiyun extern struct iscsi_cmd *iscsit_find_cmd_from_ttt(struct iscsi_conn *, u32); 31*4882a593Smuzhiyun extern int iscsit_find_cmd_for_recovery(struct iscsi_session *, struct iscsi_cmd **, 32*4882a593Smuzhiyun struct iscsi_conn_recovery **, itt_t); 33*4882a593Smuzhiyun extern void iscsit_add_cmd_to_immediate_queue(struct iscsi_cmd *, struct iscsi_conn *, u8); 34*4882a593Smuzhiyun extern struct iscsi_queue_req *iscsit_get_cmd_from_immediate_queue(struct iscsi_conn *); 35*4882a593Smuzhiyun extern int iscsit_add_cmd_to_response_queue(struct iscsi_cmd *, struct iscsi_conn *, u8); 36*4882a593Smuzhiyun extern struct iscsi_queue_req *iscsit_get_cmd_from_response_queue(struct iscsi_conn *); 37*4882a593Smuzhiyun extern void iscsit_remove_cmd_from_tx_queues(struct iscsi_cmd *, struct iscsi_conn *); 38*4882a593Smuzhiyun extern bool iscsit_conn_all_queues_empty(struct iscsi_conn *); 39*4882a593Smuzhiyun extern void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *); 40*4882a593Smuzhiyun extern void iscsit_release_cmd(struct iscsi_cmd *); 41*4882a593Smuzhiyun extern void __iscsit_free_cmd(struct iscsi_cmd *, bool); 42*4882a593Smuzhiyun extern void iscsit_free_cmd(struct iscsi_cmd *, bool); 43*4882a593Smuzhiyun extern int iscsit_check_session_usage_count(struct iscsi_session *); 44*4882a593Smuzhiyun extern void iscsit_dec_session_usage_count(struct iscsi_session *); 45*4882a593Smuzhiyun extern void iscsit_inc_session_usage_count(struct iscsi_session *); 46*4882a593Smuzhiyun extern struct iscsi_conn *iscsit_get_conn_from_cid(struct iscsi_session *, u16); 47*4882a593Smuzhiyun extern struct iscsi_conn *iscsit_get_conn_from_cid_rcfr(struct iscsi_session *, u16); 48*4882a593Smuzhiyun extern void iscsit_check_conn_usage_count(struct iscsi_conn *); 49*4882a593Smuzhiyun extern void iscsit_dec_conn_usage_count(struct iscsi_conn *); 50*4882a593Smuzhiyun extern void iscsit_inc_conn_usage_count(struct iscsi_conn *); 51*4882a593Smuzhiyun extern void iscsit_handle_nopin_response_timeout(struct timer_list *t); 52*4882a593Smuzhiyun extern void iscsit_mod_nopin_response_timer(struct iscsi_conn *); 53*4882a593Smuzhiyun extern void iscsit_start_nopin_response_timer(struct iscsi_conn *); 54*4882a593Smuzhiyun extern void iscsit_stop_nopin_response_timer(struct iscsi_conn *); 55*4882a593Smuzhiyun extern void iscsit_handle_nopin_timeout(struct timer_list *t); 56*4882a593Smuzhiyun extern void __iscsit_start_nopin_timer(struct iscsi_conn *); 57*4882a593Smuzhiyun extern void iscsit_start_nopin_timer(struct iscsi_conn *); 58*4882a593Smuzhiyun extern void iscsit_stop_nopin_timer(struct iscsi_conn *); 59*4882a593Smuzhiyun extern int iscsit_send_tx_data(struct iscsi_cmd *, struct iscsi_conn *, int); 60*4882a593Smuzhiyun extern int iscsit_fe_sendpage_sg(struct iscsi_cmd *, struct iscsi_conn *); 61*4882a593Smuzhiyun extern int iscsit_tx_login_rsp(struct iscsi_conn *, u8, u8); 62*4882a593Smuzhiyun extern void iscsit_print_session_params(struct iscsi_session *); 63*4882a593Smuzhiyun extern int iscsit_print_dev_to_proc(char *, char **, off_t, int); 64*4882a593Smuzhiyun extern int iscsit_print_sessions_to_proc(char *, char **, off_t, int); 65*4882a593Smuzhiyun extern int iscsit_print_tpg_to_proc(char *, char **, off_t, int); 66*4882a593Smuzhiyun extern int rx_data(struct iscsi_conn *, struct kvec *, int, int); 67*4882a593Smuzhiyun extern int tx_data(struct iscsi_conn *, struct kvec *, int, int); 68*4882a593Smuzhiyun extern void iscsit_collect_login_stats(struct iscsi_conn *, u8, u8); 69*4882a593Smuzhiyun extern struct iscsi_tiqn *iscsit_snmp_get_tiqn(struct iscsi_conn *); 70*4882a593Smuzhiyun extern void iscsit_fill_cxn_timeout_err_stats(struct iscsi_session *); 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun #endif /*** ISCSI_TARGET_UTIL_H ***/ 73