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111 lines
3.9 KiB
111 lines
3.9 KiB
/* 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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