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fc_fc2.h
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright(c) 2007 Intel Corporation. All rights reserved. * * 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_ */
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