root/include/uapi/scsi/fc/fc_gs.h

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/*
 * Copyright(c) 2007 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Maintained at www.Open-FCoE.org
 */

#ifndef _FC_GS_H_
#define _FC_GS_H_

#include <linux/types.h>

/*
 * Fibre Channel Services - Common Transport.
 * From T11.org FC-GS-2 Rev 5.3 November 1998.
 */

struct fc_ct_hdr {
        __u8            ct_rev;         /* revision */
        __u8            ct_in_id[3];    /* N_Port ID of original requestor */
        __u8            ct_fs_type;     /* type of fibre channel service */
        __u8            ct_fs_subtype;  /* subtype */
        __u8            ct_options;
        __u8            _ct_resvd1;
        __be16          ct_cmd;         /* command / response code */
        __be16          ct_mr_size;     /* maximum / residual size */
        __u8            _ct_resvd2;
        __u8            ct_reason;      /* reject reason */
        __u8            ct_explan;      /* reason code explanation */
        __u8            ct_vendor;      /* vendor unique data */
};

#define FC_CT_HDR_LEN   16      /* expected sizeof (struct fc_ct_hdr) */

enum fc_ct_rev {
        FC_CT_REV = 1           /* common transport revision */
};

/*
 * ct_fs_type values.
 */
enum fc_ct_fs_type {
        FC_FST_ALIAS =  0xf8,   /* alias service */
        FC_FST_MGMT =   0xfa,   /* management service */
        FC_FST_TIME =   0xfb,   /* time service */
        FC_FST_DIR =    0xfc,   /* directory service */
};

/*
 * ct_cmd: Command / response codes
 */
enum fc_ct_cmd {
        FC_FS_RJT =     0x8001, /* reject */
        FC_FS_ACC =     0x8002, /* accept */
};

/*
 * FS_RJT reason codes.
 */
enum fc_ct_reason {
        FC_FS_RJT_CMD =         0x01,   /* invalid command code */
        FC_FS_RJT_VER =         0x02,   /* invalid version level */
        FC_FS_RJT_LOG =         0x03,   /* logical error */
        FC_FS_RJT_IUSIZ =       0x04,   /* invalid IU size */
        FC_FS_RJT_BSY =         0x05,   /* logical busy */
        FC_FS_RJT_PROTO =       0x07,   /* protocol error */
        FC_FS_RJT_UNABL =       0x09,   /* unable to perform command request */
        FC_FS_RJT_UNSUP =       0x0b,   /* command not supported */
};

/*
 * FS_RJT reason code explanations.
 */
enum fc_ct_explan {
        FC_FS_EXP_NONE =        0x00,   /* no additional explanation */
        FC_FS_EXP_PID =         0x01,   /* port ID not registered */
        FC_FS_EXP_PNAM =        0x02,   /* port name not registered */
        FC_FS_EXP_NNAM =        0x03,   /* node name not registered */
        FC_FS_EXP_COS =         0x04,   /* class of service not registered */
        FC_FS_EXP_FTNR =        0x07,   /* FC-4 types not registered */
        /* definitions not complete */
};

#endif /* _FC_GS_H_ */

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