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freebsd-dev/sys/cam/ctl/ctl.h
Marcelo Araujo 8951f05525 Rework CTL frontend & backend options to use nv(3), allow creating multiple 
ioctl frontend ports.

This revision introduces two changes to CTL:
- Changes the way options are passed to CTL_LUN_REQ and CTL_PORT_REQ ioctls.
  Removes ctl_be_arg structure and associated logic and replaces it with
  nv(3)-based logic for passing in and out arguments.
- Allows creating multiple ioctl frontend ports using either ctladm(8) or
  ctld(8).
  New frontend ports are represented by /dev/cam/ctl<pp>.<vp> nodes, eg /dev/cam/ctl5.3.
  Those device nodes respond only to CTL_IO ioctl.

New command-line options for ctladm:
# creates new ioctl frontend port with using free pp and vp=0
ctladm port -c
# creates new ioctl frontend port with pp=10 and vp=0
ctladm port -c -O pp=10
# creates new ioctl frontend port with pp=11 and vp=12
ctladm port -c -O pp=11 -O vp=12
# removes port with number 4 (it's a "targ_port" number, not pp number)
ctladm port -r -p 4

New syntax for ctl.conf:
target ... {
    port ioctl/<pp>
    ...
}

target ... {
    port ioctl/<pp>/<vp>
    ...

Note: Most of this work was made by jceel@, thank you.

Submitted by:	jceel
Reworked by:	myself
Reviewed by:	mav (earlier versions and recently during the rework)
Obtained from:  FreeNAS and TrueOS
Relnotes:	Yes
Sponsored by:	iXsystems Inc.
Differential Revision:	https://reviews.freebsd.org/D9299
2018-05-10 03:50:20 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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_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_SAS = 0x20,
CTL_PORT_UMASS = 0x40,
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;
uint16_t len_used;
uint16_t len_left;
};
union ctl_modepage_info {
struct ctl_modepage_header header;
};
/*
* 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_I_T_NEXUS_LOSS = 0x0008,
CTL_UA_LUN_RESET = 0x0010,
CTL_UA_LUN_CHANGE = 0x0020,
CTL_UA_MODE_CHANGE = 0x0040,
CTL_UA_LOG_CHANGE = 0x0080,
CTL_UA_INQ_CHANGE = 0x0100,
CTL_UA_RES_PREEMPT = 0x0400,
CTL_UA_RES_RELEASE = 0x0800,
CTL_UA_REG_PREEMPT = 0x1000,
CTL_UA_ASYM_ACC_CHANGE = 0x2000,
CTL_UA_CAPACITY_CHANGE = 0x4000,
CTL_UA_THIN_PROV_THRES = 0x8000,
CTL_UA_MEDIUM_CHANGE = 0x10000,
CTL_UA_IE = 0x20000
} 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
struct ctl_lun;
struct ctl_port;
struct ctl_softc;
/*
* 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 size);
int ctl_ffz(uint32_t *mask, uint32_t first, uint32_t last);
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_default_page_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
uint8_t *page_ptr);
int ctl_ie_page_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
uint8_t *page_ptr);
int ctl_lbp_log_sense_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
int pc);
int ctl_sap_log_sense_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
int pc);
int ctl_ie_log_sense_handler(struct ctl_scsiio *ctsio,
struct ctl_page_index *page_index,
int pc);
int ctl_config_move_done(union ctl_io *io);
void ctl_datamove(union ctl_io *io);
void ctl_serseq_done(union ctl_io *io);
void ctl_done(union ctl_io *io);
void ctl_data_submit_done(union ctl_io *io);
void ctl_config_read_done(union ctl_io *io);
void ctl_config_write_done(union ctl_io *io);
void ctl_portDB_changed(int portnum);
int ctl_ioctl_io(struct cdev *dev, u_long cmd, caddr_t addr, int flag,
struct thread *td);
void ctl_est_ua(struct ctl_lun *lun, uint32_t initidx, ctl_ua_type ua);
void ctl_est_ua_port(struct ctl_lun *lun, int port, uint32_t except,
ctl_ua_type ua);
void ctl_est_ua_all(struct ctl_lun *lun, uint32_t except, ctl_ua_type ua);
void ctl_clr_ua(struct ctl_lun *lun, uint32_t initidx, ctl_ua_type ua);
void ctl_clr_ua_all(struct ctl_lun *lun, uint32_t except, ctl_ua_type ua);
void ctl_clr_ua_allluns(struct ctl_softc *ctl_softc, uint32_t initidx,
ctl_ua_type ua_type);
uint32_t ctl_decode_lun(uint64_t encoded);
uint64_t ctl_encode_lun(uint32_t decoded);
void ctl_isc_announce_lun(struct ctl_lun *lun);
void ctl_isc_announce_port(struct ctl_port *port);
void ctl_isc_announce_iid(struct ctl_port *port, int iid);
void ctl_isc_announce_mode(struct ctl_lun *lun, uint32_t initidx,
uint8_t page, uint8_t subpage);
int ctl_expand_number(const char *buf, uint64_t *num);
#endif /* _KERNEL */
#endif /* _CTL_H_ */
/*
* vim: ts=8
*/
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