text: /* SPDX-License-Identifier: GPL-2.0 */
  #ifndef ISCSI_TARGET_STAT_H
  #define ISCSI_TARGET_STAT_H
  
  #include <linux/types.h>
  #include <linux/spinlock.h>
  #include <linux/socket.h>
  
  /*
   * For struct iscsi_tiqn->tiqn_wwn default groups
   */
  extern struct config_item_type iscsi_stat_instance_cit;
  extern struct config_item_type iscsi_stat_sess_err_cit;
  extern struct config_item_type iscsi_stat_tgt_attr_cit;
  extern struct config_item_type iscsi_stat_login_cit;
  extern struct config_item_type iscsi_stat_logout_cit;
  
  /*
   * For struct iscsi_session->se_sess default groups
   */
  extern struct config_item_type iscsi_stat_sess_cit;
  
  /* iSCSI session error types */
  #define ISCSI_SESS_ERR_UNKNOWN		0
  #define ISCSI_SESS_ERR_DIGEST		1
  #define ISCSI_SESS_ERR_CXN_TIMEOUT	2
  #define ISCSI_SESS_ERR_PDU_FORMAT	3
  
  /* iSCSI session error stats */
  struct iscsi_sess_err_stats {
  	spinlock_t	lock;
  	u32		digest_errors;
  	u32		cxn_timeout_errors;
  	u32		pdu_format_errors;
  	u32		last_sess_failure_type;
  	char		last_sess_fail_rem_name[224];
  } ____cacheline_aligned;
  
  /* iSCSI login failure types (sub oids) */
  #define ISCSI_LOGIN_FAIL_OTHER		2
  #define ISCSI_LOGIN_FAIL_REDIRECT	3
  #define ISCSI_LOGIN_FAIL_AUTHORIZE	4
  #define ISCSI_LOGIN_FAIL_AUTHENTICATE	5
  #define ISCSI_LOGIN_FAIL_NEGOTIATE	6
  
  /* iSCSI login stats */
  struct iscsi_login_stats {
  	spinlock_t	lock;
  	u32		accepts;
  	u32		other_fails;
  	u32		redirects;
  	u32		authorize_fails;
  	u32		authenticate_fails;
  	u32		negotiate_fails;	/* used for notifications */
  	u64		last_fail_time;		/* time stamp (jiffies) */
  	u32		last_fail_type;
  	int		last_intr_fail_ip_family;
  	struct sockaddr_storage last_intr_fail_sockaddr;
  	char		last_intr_fail_name[224];
  } ____cacheline_aligned;
  
  /* iSCSI logout stats */
  struct iscsi_logout_stats {
  	spinlock_t	lock;
  	u32		normal_logouts;
  	u32		abnormal_logouts;
  } ____cacheline_aligned;
  
  #endif   /*** ISCSI_TARGET_STAT_H ***/
  