18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef ISCSI_TARGET_UTIL_H 38c2ecf20Sopenharmony_ci#define ISCSI_TARGET_UTIL_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/types.h> 68c2ecf20Sopenharmony_ci#include <scsi/iscsi_proto.h> /* itt_t */ 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci#define MARKER_SIZE 8 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_cistruct iscsi_cmd; 118c2ecf20Sopenharmony_cistruct iscsi_conn; 128c2ecf20Sopenharmony_cistruct iscsi_conn_recovery; 138c2ecf20Sopenharmony_cistruct iscsi_session; 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ciextern int iscsit_add_r2t_to_list(struct iscsi_cmd *, u32, u32, int, u32); 168c2ecf20Sopenharmony_ciextern struct iscsi_r2t *iscsit_get_r2t_for_eos(struct iscsi_cmd *, u32, u32); 178c2ecf20Sopenharmony_ciextern struct iscsi_r2t *iscsit_get_r2t_from_list(struct iscsi_cmd *); 188c2ecf20Sopenharmony_ciextern void iscsit_free_r2t(struct iscsi_r2t *, struct iscsi_cmd *); 198c2ecf20Sopenharmony_ciextern void iscsit_free_r2ts_from_list(struct iscsi_cmd *); 208c2ecf20Sopenharmony_ciextern struct iscsi_cmd *iscsit_alloc_cmd(struct iscsi_conn *, gfp_t); 218c2ecf20Sopenharmony_ciextern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, int); 228c2ecf20Sopenharmony_ciextern struct iscsi_seq *iscsit_get_seq_holder_for_datain(struct iscsi_cmd *, u32); 238c2ecf20Sopenharmony_ciextern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *); 248c2ecf20Sopenharmony_ciextern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32); 258c2ecf20Sopenharmony_ciextern int iscsit_sequence_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, 268c2ecf20Sopenharmony_ci unsigned char * ,__be32 cmdsn); 278c2ecf20Sopenharmony_ciextern int iscsit_check_unsolicited_dataout(struct iscsi_cmd *, unsigned char *); 288c2ecf20Sopenharmony_ciextern struct iscsi_cmd *iscsit_find_cmd_from_itt_or_dump(struct iscsi_conn *, 298c2ecf20Sopenharmony_ci itt_t, u32); 308c2ecf20Sopenharmony_ciextern struct iscsi_cmd *iscsit_find_cmd_from_ttt(struct iscsi_conn *, u32); 318c2ecf20Sopenharmony_ciextern int iscsit_find_cmd_for_recovery(struct iscsi_session *, struct iscsi_cmd **, 328c2ecf20Sopenharmony_ci struct iscsi_conn_recovery **, itt_t); 338c2ecf20Sopenharmony_ciextern void iscsit_add_cmd_to_immediate_queue(struct iscsi_cmd *, struct iscsi_conn *, u8); 348c2ecf20Sopenharmony_ciextern struct iscsi_queue_req *iscsit_get_cmd_from_immediate_queue(struct iscsi_conn *); 358c2ecf20Sopenharmony_ciextern int iscsit_add_cmd_to_response_queue(struct iscsi_cmd *, struct iscsi_conn *, u8); 368c2ecf20Sopenharmony_ciextern struct iscsi_queue_req *iscsit_get_cmd_from_response_queue(struct iscsi_conn *); 378c2ecf20Sopenharmony_ciextern void iscsit_remove_cmd_from_tx_queues(struct iscsi_cmd *, struct iscsi_conn *); 388c2ecf20Sopenharmony_ciextern bool iscsit_conn_all_queues_empty(struct iscsi_conn *); 398c2ecf20Sopenharmony_ciextern void iscsit_free_queue_reqs_for_conn(struct iscsi_conn *); 408c2ecf20Sopenharmony_ciextern void iscsit_release_cmd(struct iscsi_cmd *); 418c2ecf20Sopenharmony_ciextern void __iscsit_free_cmd(struct iscsi_cmd *, bool); 428c2ecf20Sopenharmony_ciextern void iscsit_free_cmd(struct iscsi_cmd *, bool); 438c2ecf20Sopenharmony_ciextern int iscsit_check_session_usage_count(struct iscsi_session *); 448c2ecf20Sopenharmony_ciextern void iscsit_dec_session_usage_count(struct iscsi_session *); 458c2ecf20Sopenharmony_ciextern void iscsit_inc_session_usage_count(struct iscsi_session *); 468c2ecf20Sopenharmony_ciextern struct iscsi_conn *iscsit_get_conn_from_cid(struct iscsi_session *, u16); 478c2ecf20Sopenharmony_ciextern struct iscsi_conn *iscsit_get_conn_from_cid_rcfr(struct iscsi_session *, u16); 488c2ecf20Sopenharmony_ciextern void iscsit_check_conn_usage_count(struct iscsi_conn *); 498c2ecf20Sopenharmony_ciextern void iscsit_dec_conn_usage_count(struct iscsi_conn *); 508c2ecf20Sopenharmony_ciextern void iscsit_inc_conn_usage_count(struct iscsi_conn *); 518c2ecf20Sopenharmony_ciextern void iscsit_handle_nopin_response_timeout(struct timer_list *t); 528c2ecf20Sopenharmony_ciextern void iscsit_mod_nopin_response_timer(struct iscsi_conn *); 538c2ecf20Sopenharmony_ciextern void iscsit_start_nopin_response_timer(struct iscsi_conn *); 548c2ecf20Sopenharmony_ciextern void iscsit_stop_nopin_response_timer(struct iscsi_conn *); 558c2ecf20Sopenharmony_ciextern void iscsit_handle_nopin_timeout(struct timer_list *t); 568c2ecf20Sopenharmony_ciextern void __iscsit_start_nopin_timer(struct iscsi_conn *); 578c2ecf20Sopenharmony_ciextern void iscsit_start_nopin_timer(struct iscsi_conn *); 588c2ecf20Sopenharmony_ciextern void iscsit_stop_nopin_timer(struct iscsi_conn *); 598c2ecf20Sopenharmony_ciextern int iscsit_send_tx_data(struct iscsi_cmd *, struct iscsi_conn *, int); 608c2ecf20Sopenharmony_ciextern int iscsit_fe_sendpage_sg(struct iscsi_cmd *, struct iscsi_conn *); 618c2ecf20Sopenharmony_ciextern int iscsit_tx_login_rsp(struct iscsi_conn *, u8, u8); 628c2ecf20Sopenharmony_ciextern void iscsit_print_session_params(struct iscsi_session *); 638c2ecf20Sopenharmony_ciextern int iscsit_print_dev_to_proc(char *, char **, off_t, int); 648c2ecf20Sopenharmony_ciextern int iscsit_print_sessions_to_proc(char *, char **, off_t, int); 658c2ecf20Sopenharmony_ciextern int iscsit_print_tpg_to_proc(char *, char **, off_t, int); 668c2ecf20Sopenharmony_ciextern int rx_data(struct iscsi_conn *, struct kvec *, int, int); 678c2ecf20Sopenharmony_ciextern int tx_data(struct iscsi_conn *, struct kvec *, int, int); 688c2ecf20Sopenharmony_ciextern void iscsit_collect_login_stats(struct iscsi_conn *, u8, u8); 698c2ecf20Sopenharmony_ciextern struct iscsi_tiqn *iscsit_snmp_get_tiqn(struct iscsi_conn *); 708c2ecf20Sopenharmony_ciextern void iscsit_fill_cxn_timeout_err_stats(struct iscsi_session *); 718c2ecf20Sopenharmony_ci 728c2ecf20Sopenharmony_ci#endif /*** ISCSI_TARGET_UTIL_H ***/ 73