Robert Love | f032c2f | 2008-12-09 15:10:11 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright(c) 2007 Intel Corporation. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms and conditions of the GNU General Public License, |
| 6 | * version 2, as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 11 | * more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along with |
| 14 | * this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 16 | * |
| 17 | * Maintained at www.Open-FCoE.org |
| 18 | */ |
| 19 | |
| 20 | #ifndef _FC_FC2_H_ |
| 21 | #define _FC_FC2_H_ |
| 22 | |
| 23 | /* |
| 24 | * Fibre Channel Exchanges and Sequences. |
| 25 | */ |
| 26 | #ifndef PACKED |
| 27 | #define PACKED __attribute__ ((__packed__)) |
| 28 | #endif /* PACKED */ |
| 29 | |
| 30 | |
| 31 | /* |
| 32 | * Sequence Status Block. |
| 33 | * This format is set by the FC-FS standard and is sent over the wire. |
| 34 | * Note that the fields aren't all naturally aligned. |
| 35 | */ |
| 36 | struct fc_ssb { |
| 37 | __u8 ssb_seq_id; /* sequence ID */ |
| 38 | __u8 _ssb_resvd; |
| 39 | __be16 ssb_low_seq_cnt; /* lowest SEQ_CNT */ |
| 40 | |
| 41 | __be16 ssb_high_seq_cnt; /* highest SEQ_CNT */ |
| 42 | __be16 ssb_s_stat; /* sequence status flags */ |
| 43 | |
| 44 | __be16 ssb_err_seq_cnt; /* error SEQ_CNT */ |
| 45 | __u8 ssb_fh_cs_ctl; /* frame header CS_CTL */ |
| 46 | __be16 ssb_fh_ox_id; /* frame header OX_ID */ |
| 47 | __be16 ssb_rx_id; /* responder's exchange ID */ |
| 48 | __u8 _ssb_resvd2[2]; |
| 49 | } PACKED; |
| 50 | |
| 51 | /* |
| 52 | * The SSB should be 17 bytes. Since it's layout is somewhat strange, |
| 53 | * we define the size here so that code can ASSERT that the size comes out |
| 54 | * correct. |
| 55 | */ |
| 56 | #define FC_SSB_SIZE 17 /* length of fc_ssb for assert */ |
| 57 | |
| 58 | /* |
| 59 | * ssb_s_stat - flags from FC-FS-2 T11/1619-D Rev 0.90. |
| 60 | */ |
| 61 | #define SSB_ST_RESP (1 << 15) /* sequence responder */ |
| 62 | #define SSB_ST_ACTIVE (1 << 14) /* sequence is active */ |
| 63 | #define SSB_ST_ABNORMAL (1 << 12) /* abnormal ending condition */ |
| 64 | |
| 65 | #define SSB_ST_REQ_MASK (3 << 10) /* ACK, abort sequence condition */ |
| 66 | #define SSB_ST_REQ_CONT (0 << 10) |
| 67 | #define SSB_ST_REQ_ABORT (1 << 10) |
| 68 | #define SSB_ST_REQ_STOP (2 << 10) |
| 69 | #define SSB_ST_REQ_RETRANS (3 << 10) |
| 70 | |
| 71 | #define SSB_ST_ABTS (1 << 9) /* ABTS protocol completed */ |
| 72 | #define SSB_ST_RETRANS (1 << 8) /* retransmission completed */ |
| 73 | #define SSB_ST_TIMEOUT (1 << 7) /* sequence timed out by recipient */ |
| 74 | #define SSB_ST_P_RJT (1 << 6) /* P_RJT transmitted */ |
| 75 | |
| 76 | #define SSB_ST_CLASS_BIT 4 /* class of service field LSB */ |
| 77 | #define SSB_ST_CLASS_MASK 3 /* class of service mask */ |
| 78 | #define SSB_ST_ACK (1 << 3) /* ACK (EOFt or EOFdt) transmitted */ |
| 79 | |
| 80 | /* |
| 81 | * Exchange Status Block. |
| 82 | * This format is set by the FC-FS standard and is sent over the wire. |
| 83 | * Note that the fields aren't all naturally aligned. |
| 84 | */ |
| 85 | struct fc_esb { |
| 86 | __u8 esb_cs_ctl; /* CS_CTL for frame header */ |
| 87 | __be16 esb_ox_id; /* originator exchange ID */ |
| 88 | __be16 esb_rx_id; /* responder exchange ID */ |
| 89 | __be32 esb_orig_fid; /* fabric ID of originator */ |
| 90 | __be32 esb_resp_fid; /* fabric ID of responder */ |
| 91 | __be32 esb_e_stat; /* status */ |
| 92 | __u8 _esb_resvd[4]; |
| 93 | __u8 esb_service_params[112]; /* TBD */ |
| 94 | __u8 esb_seq_status[8]; /* sequence statuses, 8 bytes each */ |
Joe Perches | a419aef | 2009-08-18 11:18:35 -0700 | [diff] [blame^] | 95 | } __attribute__((packed)); |
Robert Love | f032c2f | 2008-12-09 15:10:11 -0800 | [diff] [blame] | 96 | |
| 97 | /* |
| 98 | * Define expected size for ASSERTs. |
| 99 | * See comments on FC_SSB_SIZE. |
| 100 | */ |
| 101 | #define FC_ESB_SIZE (1 + 5*4 + 112 + 8) /* expected size */ |
| 102 | |
| 103 | /* |
| 104 | * esb_e_stat - flags from FC-FS-2 T11/1619-D Rev 0.90. |
| 105 | */ |
| 106 | #define ESB_ST_RESP (1 << 31) /* responder to exchange */ |
| 107 | #define ESB_ST_SEQ_INIT (1 << 30) /* port holds sequence initiaive */ |
| 108 | #define ESB_ST_COMPLETE (1 << 29) /* exchange is complete */ |
| 109 | #define ESB_ST_ABNORMAL (1 << 28) /* abnormal ending condition */ |
| 110 | #define ESB_ST_REC_QUAL (1 << 26) /* recovery qualifier active */ |
| 111 | |
| 112 | #define ESB_ST_ERRP_BIT 24 /* LSB for error policy */ |
| 113 | #define ESB_ST_ERRP_MASK (3 << 24) /* mask for error policy */ |
| 114 | #define ESB_ST_ERRP_MULT (0 << 24) /* abort, discard multiple sequences */ |
| 115 | #define ESB_ST_ERRP_SING (1 << 24) /* abort, discard single sequence */ |
| 116 | #define ESB_ST_ERRP_INF (2 << 24) /* process with infinite buffers */ |
| 117 | #define ESB_ST_ERRP_IMM (3 << 24) /* discard mult. with immed. retran. */ |
| 118 | |
| 119 | #define ESB_ST_OX_ID_INVL (1 << 23) /* originator XID invalid */ |
| 120 | #define ESB_ST_RX_ID_INVL (1 << 22) /* responder XID invalid */ |
| 121 | #define ESB_ST_PRI_INUSE (1 << 21) /* priority / preemption in use */ |
| 122 | |
| 123 | #endif /* _FC_FC2_H_ */ |