124 lines
4.5 KiB
C
124 lines
4.5 KiB
C
|
/*
|
||
|
|
* 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_FC2_H_
|
||
|
|
#define _FC_FC2_H_
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Fibre Channel Exchanges and Sequences.
|
||
|
|
*/
|
||
|
|
#ifndef PACKED
|
||
|
|
#define PACKED __attribute__ ((__packed__))
|
||
|
|
#endif /* PACKED */
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Sequence Status Block.
|
||
|
|
* This format is set by the FC-FS standard and is sent over the wire.
|
||
|
|
* Note that the fields aren't all naturally aligned.
|
||
|
|
*/
|
||
|
|
struct fc_ssb {
|
||
|
|
__u8 ssb_seq_id; /* sequence ID */
|
||
|
|
__u8 _ssb_resvd;
|
||
|
|
__be16 ssb_low_seq_cnt; /* lowest SEQ_CNT */
|
||
|
|
|
||
|
|
__be16 ssb_high_seq_cnt; /* highest SEQ_CNT */
|
||
|
|
__be16 ssb_s_stat; /* sequence status flags */
|
||
|
|
|
||
|
|
__be16 ssb_err_seq_cnt; /* error SEQ_CNT */
|
||
|
|
__u8 ssb_fh_cs_ctl; /* frame header CS_CTL */
|
||
|
|
__be16 ssb_fh_ox_id; /* frame header OX_ID */
|
||
|
|
__be16 ssb_rx_id; /* responder's exchange ID */
|
||
|
|
__u8 _ssb_resvd2[2];
|
||
|
|
} PACKED;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The SSB should be 17 bytes. Since it's layout is somewhat strange,
|
||
|
|
* we define the size here so that code can ASSERT that the size comes out
|
||
|
|
* correct.
|
||
|
|
*/
|
||
|
|
#define FC_SSB_SIZE 17 /* length of fc_ssb for assert */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ssb_s_stat - flags from FC-FS-2 T11/1619-D Rev 0.90.
|
||
|
|
*/
|
||
|
|
#define SSB_ST_RESP (1 << 15) /* sequence responder */
|
||
|
|
#define SSB_ST_ACTIVE (1 << 14) /* sequence is active */
|
||
|
|
#define SSB_ST_ABNORMAL (1 << 12) /* abnormal ending condition */
|
||
|
|
|
||
|
|
#define SSB_ST_REQ_MASK (3 << 10) /* ACK, abort sequence condition */
|
||
|
|
#define SSB_ST_REQ_CONT (0 << 10)
|
||
|
|
#define SSB_ST_REQ_ABORT (1 << 10)
|
||
|
|
#define SSB_ST_REQ_STOP (2 << 10)
|
||
|
|
#define SSB_ST_REQ_RETRANS (3 << 10)
|
||
|
|
|
||
|
|
#define SSB_ST_ABTS (1 << 9) /* ABTS protocol completed */
|
||
|
|
#define SSB_ST_RETRANS (1 << 8) /* retransmission completed */
|
||
|
|
#define SSB_ST_TIMEOUT (1 << 7) /* sequence timed out by recipient */
|
||
|
|
#define SSB_ST_P_RJT (1 << 6) /* P_RJT transmitted */
|
||
|
|
|
||
|
|
#define SSB_ST_CLASS_BIT 4 /* class of service field LSB */
|
||
|
|
#define SSB_ST_CLASS_MASK 3 /* class of service mask */
|
||
|
|
#define SSB_ST_ACK (1 << 3) /* ACK (EOFt or EOFdt) transmitted */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Exchange Status Block.
|
||
|
|
* This format is set by the FC-FS standard and is sent over the wire.
|
||
|
|
* Note that the fields aren't all naturally aligned.
|
||
|
|
*/
|
||
|
|
struct fc_esb {
|
||
|
|
__u8 esb_cs_ctl; /* CS_CTL for frame header */
|
||
|
|
__be16 esb_ox_id; /* originator exchange ID */
|
||
|
|
__be16 esb_rx_id; /* responder exchange ID */
|
||
|
|
__be32 esb_orig_fid; /* fabric ID of originator */
|
||
|
|
__be32 esb_resp_fid; /* fabric ID of responder */
|
||
|
|
__be32 esb_e_stat; /* status */
|
||
|
|
__u8 _esb_resvd[4];
|
||
|
|
__u8 esb_service_params[112]; /* TBD */
|
||
|
|
__u8 esb_seq_status[8]; /* sequence statuses, 8 bytes each */
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define expected size for ASSERTs.
|
||
|
|
* See comments on FC_SSB_SIZE.
|
||
|
|
*/
|
||
|
|
#define FC_ESB_SIZE (1 + 5*4 + 112 + 8) /* expected size */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* esb_e_stat - flags from FC-FS-2 T11/1619-D Rev 0.90.
|
||
|
|
*/
|
||
|
|
#define ESB_ST_RESP (1 << 31) /* responder to exchange */
|
||
|
|
#define ESB_ST_SEQ_INIT (1 << 30) /* port holds sequence initiative */
|
||
|
|
#define ESB_ST_COMPLETE (1 << 29) /* exchange is complete */
|
||
|
|
#define ESB_ST_ABNORMAL (1 << 28) /* abnormal ending condition */
|
||
|
|
#define ESB_ST_REC_QUAL (1 << 26) /* recovery qualifier active */
|
||
|
|
|
||
|
|
#define ESB_ST_ERRP_BIT 24 /* LSB for error policy */
|
||
|
|
#define ESB_ST_ERRP_MASK (3 << 24) /* mask for error policy */
|
||
|
|
#define ESB_ST_ERRP_MULT (0 << 24) /* abort, discard multiple sequences */
|
||
|
|
#define ESB_ST_ERRP_SING (1 << 24) /* abort, discard single sequence */
|
||
|
|
#define ESB_ST_ERRP_INF (2 << 24) /* process with infinite buffers */
|
||
|
|
#define ESB_ST_ERRP_IMM (3 << 24) /* discard mult. with immed. retran. */
|
||
|
|
|
||
|
|
#define ESB_ST_OX_ID_INVL (1 << 23) /* originator XID invalid */
|
||
|
|
#define ESB_ST_RX_ID_INVL (1 << 22) /* responder XID invalid */
|
||
|
|
#define ESB_ST_PRI_INUSE (1 << 21) /* priority / preemption in use */
|
||
|
|
|
||
|
|
#endif /* _FC_FC2_H_ */
|