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: /proc/self/root/usr/include/ [ drwxr-xr-x ]
name : mpath_persist.h /* version - 1.0 */ #ifndef MPATH_PERSIST_LIB_H #define MPATH_PERSIST_LIB_H #ifdef __cplusplus extern "C" { #endif #include <inttypes.h> #define MPATH_MAX_PARAM_LEN 8192 #define MPATH_MX_TIDS 32 /* Max number of transport ids"*/ #define MPATH_MX_TID_LEN 256 /* Max length of transport id */ /* PRIN Service Actions */ #define MPATH_PRIN_RKEY_SA 0x00 /* READ KEYS SA*/ #define MPATH_PRIN_RRES_SA 0x01 /* READ RESERVATION SA*/ #define MPATH_PRIN_RCAP_SA 0x02 /* REPORT CAPABILITIES SA*/ #define MPATH_PRIN_RFSTAT_SA 0x03 /* READ FULL STATUS SA*/ /* PROUT Service Actions */ #define MPATH_PROUT_REG_SA 0x00 /* REGISTER SA */ #define MPATH_PROUT_RES_SA 0x01 /* RESERVE SA*/ #define MPATH_PROUT_REL_SA 0x02 /* RELEASE SA*/ #define MPATH_PROUT_CLEAR_SA 0x03 /* CLEAR SA*/ #define MPATH_PROUT_PREE_SA 0x04 /* PREEMPT SA*/ #define MPATH_PROUT_PREE_AB_SA 0x05 /* PREEMPT AND ABORT SA*/ #define MPATH_PROUT_REG_IGN_SA 0x06 /* REGISTER AND IGNORE EXISTING KEY SA*/ #define MPATH_PROUT_REG_MOV_SA 0x07 /* REGISTER AND MOVE SA*/ #define MPATH_LU_SCOPE 0x00 /* LU_SCOPE */ /* Persistent reservations type */ #define MPATH_PRTPE_WE 0x01 /* Write Exclusive */ #define MPATH_PRTPE_EA 0x03 /* Exclusive Access*/ #define MPATH_PRTPE_WE_RO 0x05 /* WriteExclusive Registrants Only */ #define MPATH_PRTPE_EA_RO 0x06 /* Exclusive Access. Registrants Only*/ #define MPATH_PRTPE_WE_AR 0x07 /* Write Exclusive. All Registrants*/ #define MPATH_PRTPE_EA_AR 0x08 /* Exclusive Access. All Registrants */ /* PR RETURN_STATUS */ #define MPATH_PR_SKIP -1 /* skipping this path */ #define MPATH_PR_SUCCESS 0 #define MPATH_PR_SYNTAX_ERROR 1 /* syntax error or invalid parameter */ /* status for check condition */ #define MPATH_PR_SENSE_NOT_READY 2 /* [sk,asc,ascq: 0x2,*,*] */ #define MPATH_PR_SENSE_MEDIUM_ERROR 3 /* [sk,asc,ascq: 0x3,*,*] */ #define MPATH_PR_SENSE_HARDWARE_ERROR 4 /* [sk,asc,ascq: 0x4,*,*] */ #define MPATH_PR_ILLEGAL_REQ 5 /* [sk,asc,ascq: 0x5,*,*]*/ #define MPATH_PR_SENSE_UNIT_ATTENTION 6 /* [sk,asc,ascq: 0x6,*,*] */ #define MPATH_PR_SENSE_INVALID_OP 7 /* [sk,asc,ascq: 0x5,0x20,0x0]*/ #define MPATH_PR_SENSE_ABORTED_COMMAND 8 /* [sk,asc,ascq: 0xb,*,*] */ #define MPATH_PR_NO_SENSE 9 /* [sk,asc,ascq: 0x0,*,*] */ #define MPATH_PR_SENSE_MALFORMED 10 /* Response to SCSI command malformed */ #define MPATH_PR_RESERV_CONFLICT 11 /* Reservation conflict on the device */ #define MPATH_PR_FILE_ERROR 12 /* file (device node) problems(e.g. not found)*/ #define MPATH_PR_DMMP_ERROR 13 /* DMMP related error.(e.g Error in getting dm info */ #define MPATH_PR_THREAD_ERROR 14 /* pthreads error (e.g. unable to create new thread) */ #define MPATH_PR_OTHER 15 /*other error/warning has occurred(transport or driver error) */ /* PR MASK */ #define MPATH_F_APTPL_MASK 0x01 /* APTPL MASK*/ #define MPATH_F_ALL_TG_PT_MASK 0x04 /* ALL_TG_PT MASK*/ #define MPATH_F_SPEC_I_PT_MASK 0x08 /* SPEC_I_PT MASK*/ #define MPATH_PR_TYPE_MASK 0x0f /* TYPE MASK*/ #define MPATH_PR_SCOPE_MASK 0xf0 /* SCOPE MASK*/ /*Transport ID PROTOCOL IDENTIFIER values */ #define MPATH_PROTOCOL_ID_FC 0x00 #define MPATH_PROTOCOL_ID_ISCSI 0x05 #define MPATH_PROTOCOL_ID_SAS 0x06 /*Transport ID FORMATE CODE */ #define MPATH_WWUI_DEVICE_NAME 0x00 /* World wide unique initiator device name */ #define MPATH_WWUI_PORT_IDENTIFIER 0x40 /* World wide unique initiator port identifier */ extern unsigned int mpath_mx_alloc_len; struct prin_readdescr { uint32_t prgeneration; uint32_t additional_length; /* The value should be either 0 or divisible by 8. 0 indicates no registered reservation key. */ uint8_t key_list[MPATH_MAX_PARAM_LEN]; }; struct prin_resvdescr { uint32_t prgeneration; uint32_t additional_length; /* The value should be either 0 or 10h. 0 indicates there is no reservation held. 10h indicates the key[8] and scope_type have valid values */ uint8_t key[8]; uint32_t _obsolete; uint8_t _reserved; uint8_t scope_type; /* Use PR SCOPE AND TYPE MASK specified above */ uint16_t _obsolete1; }; struct prin_capdescr { uint16_t length; uint8_t flags[2]; uint16_t pr_type_mask; uint16_t _reserved; }; struct transportid { uint8_t format_code; uint8_t protocol_id; union { uint8_t n_port_name[8]; /* FC transport*/ uint8_t sas_address[8]; /* SAS transport */ uint8_t iscsi_name[256]; /* ISCSI transport */ }; }; struct prin_fulldescr { uint8_t key[8]; uint8_t flag; /* All_tg_pt and reservation holder */ uint8_t scope_type; /* Use PR SCOPE AND TYPE MASK specified above. Meaningful only for reservation holder */ uint16_t rtpi; struct transportid trnptid; }; struct print_fulldescr_list { uint32_t prgeneration; uint32_t number_of_descriptor; uint8_t private_buffer[MPATH_MAX_PARAM_LEN]; /*Private buffer for list storage*/ struct prin_fulldescr *descriptors[]; }; struct prin_resp { union { struct prin_readdescr prin_readkeys; /* for PRIN read keys SA*/ struct prin_resvdescr prin_readresv; /* for PRIN read reservation SA*/ struct prin_capdescr prin_readcap; /* for PRIN Report Capabilities SA*/ struct print_fulldescr_list prin_readfd; /* for PRIN read full status SA*/ }prin_descriptor; }; struct prout_param_descriptor { /* PROUT parameter descriptor */ uint8_t key[8]; uint8_t sa_key[8]; uint32_t _obsolete; uint8_t sa_flags; uint8_t _reserved; uint16_t _obsolete1; uint8_t private_buffer[MPATH_MAX_PARAM_LEN]; /*private buffer for list storage*/ uint32_t num_transportid; /* Number of Transport ID listed in trnptid_list[]*/ struct transportid *trnptid_list[]; }; /* Function declarations */ /* * DESCRIPTION : * Initialize device mapper multipath configuration. This function must be invoked first * before performing reservation management functions. * RESTRICTIONS: * * RETURNS: struct config ->Success, NULL->Failed. */ extern struct config * mpath_lib_init (void); /* * DESCRIPTION : * Release device mapper multipath configuration. This function must be invoked after * performing reservation management functions. * RESTRICTIONS: * * RETURNS: 0->Success, 1->Failed. */ extern int mpath_lib_exit (struct config *conf); /* * DESCRIPTION : * This function sends PRIN command to the DM device and get the response. * * @fd: The file descriptor of a multipath device. Input argument. * @rq_servact: PRIN command service action. Input argument * @resp: The response from PRIN service action. The resp is a struct specified above. The caller should * manage the memory allocation of this struct * @noisy: Turn on debugging trace: Input argument. 0->Disable, 1->Enable * @verbose: Set verbosity level. Input argument. value:[0-3]. 0->disabled, 3->Max verbose * * RESTRICTIONS: * * RETURNS: MPATH_PR_SUCCESS if PR command successful else returns any of the status specified * above in RETURN_STATUS. * */ extern int mpath_persistent_reserve_in (int fd, int rq_servact, struct prin_resp *resp, int noisy, int verbose); /* * DESCRIPTION : * This function is like mpath_persistent_reserve_in(), except that it doesn't call * mpath_persistent_reserve_init_vecs() and mpath_persistent_reserve_free_vecs() * before and after the actual PR call. */ extern int __mpath_persistent_reserve_in(int fd, int rq_servact, struct prin_resp *resp, int noisy); /* * DESCRIPTION : * This function sends PROUT command to the DM device and get the response. * * @fd: The file descriptor of a multipath device. Input argument. * @rq_servact: PROUT command service action. Input argument * @rq_scope: Persistent reservation scope. The value should be always LU_SCOPE (0h). * @rq_type: Persistent reservation type. The valid values of persistent reservation types are * 5h (Write exclusive - registrants only) * 6h (Exclusive access - registrants only) * 7h (Write exclusive - All registrants) * 8h (Exclusive access - All registrants). * @paramp: PROUT command parameter data. The paramp is a struct which describes PROUT * parameter list. The caller should manage the memory allocation of this struct. * @noisy: Turn on debugging trace: Input argument.0->Disable, 1->Enable. * @verbose: Set verbosity level. Input argument. value:0 to 3. 0->disabled, 3->Max verbose * * RESTRICTIONS: * * RETURNS: MPATH_PR_SUCCESS if PR command successful else returns any of the status specified * above in RETURN_STATUS. */ extern int mpath_persistent_reserve_out ( int fd, int rq_servact, int rq_scope, unsigned int rq_type, struct prout_param_descriptor *paramp, int noisy, int verbose); /* * DESCRIPTION : * This function is like mpath_persistent_reserve_out(), except that it doesn't call * mpath_persistent_reserve_init_vecs() and mpath_persistent_reserve_free_vecs() * before and after the actual PR call. */ extern int __mpath_persistent_reserve_out( int fd, int rq_servact, int rq_scope, unsigned int rq_type, struct prout_param_descriptor *paramp, int noisy); /* * DESCRIPTION : * This function allocates data structures and performs basic initialization and * device discovery for later calls of __mpath_persistent_reserve_in() or * __mpath_persistent_reserve_out(). * @verbose: Set verbosity level. Input argument. value:0 to 3. 0->disabled, 3->Max verbose * * RESTRICTIONS: * * RETURNS: MPATH_PR_SUCCESS if successful else returns any of the status specified * above in RETURN_STATUS. */ int mpath_persistent_reserve_init_vecs(int verbose); /* * DESCRIPTION : * This function frees data structures allocated by * mpath_persistent_reserve_init_vecs(). */ void mpath_persistent_reserve_free_vecs(void); #ifdef __cplusplus } #endif #endif /*MPATH_PERSIST_LIB_H*/