112 lines
3.9 KiB
C
112 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright(c) 2007 Intel Corporation. All rights reserved.
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*
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* Maintained at www.Open-FCoE.org
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*/
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#ifndef _FC_FC2_H_
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#define _FC_FC2_H_
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/*
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* Fibre Channel Exchanges and Sequences.
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*/
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#ifndef PACKED
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#define PACKED __attribute__ ((__packed__))
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#endif /* PACKED */
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/*
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* Sequence Status Block.
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* This format is set by the FC-FS standard and is sent over the wire.
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* Note that the fields aren't all naturally aligned.
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*/
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struct fc_ssb {
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__u8 ssb_seq_id; /* sequence ID */
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__u8 _ssb_resvd;
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__be16 ssb_low_seq_cnt; /* lowest SEQ_CNT */
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__be16 ssb_high_seq_cnt; /* highest SEQ_CNT */
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__be16 ssb_s_stat; /* sequence status flags */
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__be16 ssb_err_seq_cnt; /* error SEQ_CNT */
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__u8 ssb_fh_cs_ctl; /* frame header CS_CTL */
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__be16 ssb_fh_ox_id; /* frame header OX_ID */
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__be16 ssb_rx_id; /* responder's exchange ID */
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__u8 _ssb_resvd2[2];
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} PACKED;
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/*
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* The SSB should be 17 bytes. Since it's layout is somewhat strange,
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* we define the size here so that code can ASSERT that the size comes out
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* correct.
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*/
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#define FC_SSB_SIZE 17 /* length of fc_ssb for assert */
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/*
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* ssb_s_stat - flags from FC-FS-2 T11/1619-D Rev 0.90.
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*/
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#define SSB_ST_RESP (1 << 15) /* sequence responder */
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#define SSB_ST_ACTIVE (1 << 14) /* sequence is active */
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#define SSB_ST_ABNORMAL (1 << 12) /* abnormal ending condition */
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#define SSB_ST_REQ_MASK (3 << 10) /* ACK, abort sequence condition */
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#define SSB_ST_REQ_CONT (0 << 10)
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#define SSB_ST_REQ_ABORT (1 << 10)
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#define SSB_ST_REQ_STOP (2 << 10)
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#define SSB_ST_REQ_RETRANS (3 << 10)
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#define SSB_ST_ABTS (1 << 9) /* ABTS protocol completed */
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#define SSB_ST_RETRANS (1 << 8) /* retransmission completed */
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#define SSB_ST_TIMEOUT (1 << 7) /* sequence timed out by recipient */
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#define SSB_ST_P_RJT (1 << 6) /* P_RJT transmitted */
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#define SSB_ST_CLASS_BIT 4 /* class of service field LSB */
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#define SSB_ST_CLASS_MASK 3 /* class of service mask */
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#define SSB_ST_ACK (1 << 3) /* ACK (EOFt or EOFdt) transmitted */
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/*
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* Exchange Status Block.
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* This format is set by the FC-FS standard and is sent over the wire.
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* Note that the fields aren't all naturally aligned.
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*/
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struct fc_esb {
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__u8 esb_cs_ctl; /* CS_CTL for frame header */
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__be16 esb_ox_id; /* originator exchange ID */
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__be16 esb_rx_id; /* responder exchange ID */
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__be32 esb_orig_fid; /* fabric ID of originator */
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__be32 esb_resp_fid; /* fabric ID of responder */
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__be32 esb_e_stat; /* status */
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__u8 _esb_resvd[4];
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__u8 esb_service_params[112]; /* TBD */
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__u8 esb_seq_status[8]; /* sequence statuses, 8 bytes each */
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} __attribute__((packed));
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/*
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* Define expected size for ASSERTs.
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* See comments on FC_SSB_SIZE.
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*/
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#define FC_ESB_SIZE (1 + 5*4 + 112 + 8) /* expected size */
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/*
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* esb_e_stat - flags from FC-FS-2 T11/1619-D Rev 0.90.
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*/
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#define ESB_ST_RESP (1 << 31) /* responder to exchange */
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#define ESB_ST_SEQ_INIT (1 << 30) /* port holds sequence initiative */
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#define ESB_ST_COMPLETE (1 << 29) /* exchange is complete */
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#define ESB_ST_ABNORMAL (1 << 28) /* abnormal ending condition */
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#define ESB_ST_REC_QUAL (1 << 26) /* recovery qualifier active */
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#define ESB_ST_ERRP_BIT 24 /* LSB for error policy */
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#define ESB_ST_ERRP_MASK (3 << 24) /* mask for error policy */
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#define ESB_ST_ERRP_MULT (0 << 24) /* abort, discard multiple sequences */
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#define ESB_ST_ERRP_SING (1 << 24) /* abort, discard single sequence */
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#define ESB_ST_ERRP_INF (2 << 24) /* process with infinite buffers */
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#define ESB_ST_ERRP_IMM (3 << 24) /* discard mult. with immed. retran. */
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#define ESB_ST_OX_ID_INVL (1 << 23) /* originator XID invalid */
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#define ESB_ST_RX_ID_INVL (1 << 22) /* responder XID invalid */
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#define ESB_ST_PRI_INUSE (1 << 21) /* priority / preemption in use */
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#endif /* _FC_FC2_H_ */
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