freebsd-nq/sys/cam/ctl/ctl.h
Alexander Motin 917d38fb99 Create separate CTL port for every iSCSI target (and maybe portal group).
Having single port for all iSCSI connections makes problematic implementing
some more advanced SCSI functionality in CTL, that require proper ports
enumeration and identification.

This change extends CTL iSCSI API, making ctld daemon to control list of
iSCSI ports in CTL.  When new target is defined in config fine, ctld will
create respective port in CTL.  When target is removed -- port will be
also removed after all active commands through that port properly aborted.
This change require ctld to be rebuilt to match the kernel.

As a minor side effect, this allows to have iSCSI targets without LUNs.
While that may look odd and not very useful, that is not incorrect.
2014-07-05 18:15:00 +00:00

214 lines
6.1 KiB
C

/*-
* Copyright (c) 2003 Silicon Graphics International Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl.h#5 $
* $FreeBSD$
*/
/*
* Function definitions used both within CTL and potentially in various CTL
* clients.
*
* Author: Ken Merry <ken@FreeBSD.org>
*/
#ifndef _CTL_H_
#define _CTL_H_
#define ctl_min(x,y) (((x) < (y)) ? (x) : (y))
#define CTL_RETVAL_COMPLETE 0
#define CTL_RETVAL_QUEUED 1
#define CTL_RETVAL_ALLOCATED 2
#define CTL_RETVAL_ERROR 3
typedef enum {
CTL_PORT_NONE = 0x00,
CTL_PORT_FC = 0x01,
CTL_PORT_SCSI = 0x02,
CTL_PORT_IOCTL = 0x04,
CTL_PORT_INTERNAL = 0x08,
CTL_PORT_ISCSI = 0x10,
CTL_PORT_ALL = 0xff,
CTL_PORT_ISC = 0x100 // FC port for inter-shelf communication
} ctl_port_type;
struct ctl_port_entry {
ctl_port_type port_type;
char port_name[64];
int32_t targ_port;
int physical_port;
int virtual_port;
u_int flags;
#define CTL_PORT_WWNN_VALID 0x01
#define CTL_PORT_WWPN_VALID 0x02
uint64_t wwnn;
uint64_t wwpn;
int online;
};
struct ctl_modepage_header {
uint8_t page_code;
uint8_t subpage;
int32_t len_used;
int32_t len_left;
};
struct ctl_modepage_aps {
struct ctl_modepage_header header;
uint8_t lock_active;
};
union ctl_modepage_info {
struct ctl_modepage_header header;
struct ctl_modepage_aps aps;
};
/*
* Serial number length, for VPD page 0x80.
*/
#define CTL_SN_LEN 16
/*
* Device ID length, for VPD page 0x83.
*/
#define CTL_DEVID_LEN 64
#define CTL_DEVID_MIN_LEN 16
/*
* WWPN length, for VPD page 0x83.
*/
#define CTL_WWPN_LEN 8
#define CTL_DRIVER_NAME_LEN 32
/*
* Unit attention types. ASC/ASCQ values for these should be placed in
* ctl_build_ua. These are also listed in order of reporting priority.
* i.e. a poweron UA is reported first, bus reset second, etc.
*/
typedef enum {
CTL_UA_NONE = 0x0000,
CTL_UA_POWERON = 0x0001,
CTL_UA_BUS_RESET = 0x0002,
CTL_UA_TARG_RESET = 0x0004,
CTL_UA_LUN_RESET = 0x0008,
CTL_UA_LUN_CHANGE = 0x0010,
CTL_UA_MODE_CHANGE = 0x0020,
CTL_UA_LOG_CHANGE = 0x0040,
CTL_UA_LVD = 0x0080,
CTL_UA_SE = 0x0100,
CTL_UA_RES_PREEMPT = 0x0200,
CTL_UA_RES_RELEASE = 0x0400,
CTL_UA_REG_PREEMPT = 0x0800,
CTL_UA_ASYM_ACC_CHANGE = 0x1000,
CTL_UA_CAPACITY_CHANGED = 0x2000
} ctl_ua_type;
#ifdef _KERNEL
MALLOC_DECLARE(M_CTL);
struct ctl_page_index;
#ifdef SYSCTL_DECL /* from sysctl.h */
SYSCTL_DECL(_kern_cam_ctl);
#endif
/*
* Call these routines to enable or disable front end ports.
*/
int ctl_port_enable(ctl_port_type port_type);
int ctl_port_disable(ctl_port_type port_type);
/*
* This routine grabs a list of frontend ports.
*/
int ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced,
int *num_entries_filled, int *num_entries_dropped,
ctl_port_type port_type, int no_virtual);
/*
* Put a string into an sbuf, escaping characters that are illegal or not
* recommended in XML. Note this doesn't escape everything, just > < and &.
*/
int ctl_sbuf_printf_esc(struct sbuf *sb, char *str);
int ctl_ffz(uint32_t *mask, uint32_t size);
int ctl_set_mask(uint32_t *mask, uint32_t bit);
int ctl_clear_mask(uint32_t *mask, uint32_t bit);
int ctl_is_set(uint32_t *mask, uint32_t bit);
int ctl_control_page_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
uint8_t *page_ptr);
/**
int ctl_failover_sp_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
uint8_t *page_ptr);
**/
int ctl_power_sp_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index, uint8_t *page_ptr);
int ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index, int pc);
int ctl_aps_sp_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index, uint8_t *page_ptr);
int ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
int pc);
int ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
uint8_t *page_ptr);
int ctl_config_move_done(union ctl_io *io);
void ctl_datamove(union ctl_io *io);
void ctl_done(union ctl_io *io);
void ctl_data_submit_done(union ctl_io *io);
void ctl_config_write_done(union ctl_io *io);
void ctl_portDB_changed(int portnum);
void ctl_init_isc_msg(void);
/*
* KPI to manipulate LUN/port options
*/
struct ctl_option {
STAILQ_ENTRY(ctl_option) links;
char *name;
char *value;
};
typedef STAILQ_HEAD(ctl_options, ctl_option) ctl_options_t;
struct ctl_be_arg;
void ctl_init_opts(ctl_options_t *opts, int num_args, struct ctl_be_arg *args);
void ctl_free_opts(ctl_options_t *opts);
char * ctl_get_opt(ctl_options_t *opts, const char *name);
#endif /* _KERNEL */
#endif /* _CTL_H_ */
/*
* vim: ts=8
*/