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fc_fs.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Copyright(c) 2007 Intel Corporation. All rights reserved. * * Maintained at www.Open-FCoE.org */ #ifndef _FC_FS_H_ #define _FC_FS_H_ #include <linux/types.h> /* * Fibre Channel Framing and Signalling definitions. * From T11 FC-FS-2 Rev 0.90 - 9 August 2005. */ /* * Frame header */ struct fc_frame_header { __u8 fh_r_ctl; /* routing control */ __u8 fh_d_id[3]; /* Destination ID */ __u8 fh_cs_ctl; /* class of service control / pri */ __u8 fh_s_id[3]; /* Source ID */ __u8 fh_type; /* see enum fc_fh_type below */ __u8 fh_f_ctl[3]; /* frame control */ __u8 fh_seq_id; /* sequence ID */ __u8 fh_df_ctl; /* data field control */ __be16 fh_seq_cnt; /* sequence count */ __be16 fh_ox_id; /* originator exchange ID */ __be16 fh_rx_id; /* responder exchange ID */ __be32 fh_parm_offset; /* parameter or relative offset */ }; #define FC_FRAME_HEADER_LEN 24 /* expected length of structure */ #define FC_MAX_PAYLOAD 2112U /* max payload length in bytes */ #define FC_MIN_MAX_PAYLOAD 256U /* lower limit on max payload */ #define FC_MAX_FRAME (FC_MAX_PAYLOAD + FC_FRAME_HEADER_LEN) #define FC_MIN_MAX_FRAME (FC_MIN_MAX_PAYLOAD + FC_FRAME_HEADER_LEN) /* * fh_r_ctl - Routing control definitions. */ /* * FC-4 device_data. */ enum fc_rctl { FC_RCTL_DD_UNCAT = 0x00, /* uncategorized information */ FC_RCTL_DD_SOL_DATA = 0x01, /* solicited data */ FC_RCTL_DD_UNSOL_CTL = 0x02, /* unsolicited control */ FC_RCTL_DD_SOL_CTL = 0x03, /* solicited control or reply */ FC_RCTL_DD_UNSOL_DATA = 0x04, /* unsolicited data */ FC_RCTL_DD_DATA_DESC = 0x05, /* data descriptor */ FC_RCTL_DD_UNSOL_CMD = 0x06, /* unsolicited command */ FC_RCTL_DD_CMD_STATUS = 0x07, /* command status */ #define FC_RCTL_ILS_REQ FC_RCTL_DD_UNSOL_CTL /* ILS request */ #define FC_RCTL_ILS_REP FC_RCTL_DD_SOL_CTL /* ILS reply */ /* * Extended Link_Data */ FC_RCTL_ELS_REQ = 0x22, /* extended link services request */ FC_RCTL_ELS_REP = 0x23, /* extended link services reply */ FC_RCTL_ELS4_REQ = 0x32, /* FC-4 ELS request */ FC_RCTL_ELS4_REP = 0x33, /* FC-4 ELS reply */ /* * Optional Extended Headers */ FC_RCTL_VFTH = 0x50, /* virtual fabric tagging header */ FC_RCTL_IFRH = 0x51, /* inter-fabric routing header */ FC_RCTL_ENCH = 0x52, /* encapsulation header */ /* * Basic Link Services fh_r_ctl values. */ FC_RCTL_BA_NOP = 0x80, /* basic link service NOP */ FC_RCTL_BA_ABTS = 0x81, /* basic link service abort */ FC_RCTL_BA_RMC = 0x82, /* remove connection */ FC_RCTL_BA_ACC = 0x84, /* basic accept */ FC_RCTL_BA_RJT = 0x85, /* basic reject */ FC_RCTL_BA_PRMT = 0x86, /* dedicated connection preempted */ /* * Link Control Information. */ FC_RCTL_ACK_1 = 0xc0, /* acknowledge_1 */ FC_RCTL_ACK_0 = 0xc1, /* acknowledge_0 */ FC_RCTL_P_RJT = 0xc2, /* port reject */ FC_RCTL_F_RJT = 0xc3, /* fabric reject */ FC_RCTL_P_BSY = 0xc4, /* port busy */ FC_RCTL_F_BSY = 0xc5, /* fabric busy to data frame */ FC_RCTL_F_BSYL = 0xc6, /* fabric busy to link control frame */ FC_RCTL_LCR = 0xc7, /* link credit reset */ FC_RCTL_END = 0xc9, /* end */ }; /* incomplete list of definitions */ /* * R_CTL names initializer. * Please keep this matching the above definitions. */ #define FC_RCTL_NAMES_INIT { \ [FC_RCTL_DD_UNCAT] = "uncat", \ [FC_RCTL_DD_SOL_DATA] = "sol data", \ [FC_RCTL_DD_UNSOL_CTL] = "unsol ctl", \ [FC_RCTL_DD_SOL_CTL] = "sol ctl/reply", \ [FC_RCTL_DD_UNSOL_DATA] = "unsol data", \ [FC_RCTL_DD_DATA_DESC] = "data desc", \ [FC_RCTL_DD_UNSOL_CMD] = "unsol cmd", \ [FC_RCTL_DD_CMD_STATUS] = "cmd status", \ [FC_RCTL_ELS_REQ] = "ELS req", \ [FC_RCTL_ELS_REP] = "ELS rep", \ [FC_RCTL_ELS4_REQ] = "FC-4 ELS req", \ [FC_RCTL_ELS4_REP] = "FC-4 ELS rep", \ [FC_RCTL_BA_NOP] = "BLS NOP", \ [FC_RCTL_BA_ABTS] = "BLS abort", \ [FC_RCTL_BA_RMC] = "BLS remove connection", \ [FC_RCTL_BA_ACC] = "BLS accept", \ [FC_RCTL_BA_RJT] = "BLS reject", \ [FC_RCTL_BA_PRMT] = "BLS dedicated connection preempted", \ [FC_RCTL_ACK_1] = "LC ACK_1", \ [FC_RCTL_ACK_0] = "LC ACK_0", \ [FC_RCTL_P_RJT] = "LC port reject", \ [FC_RCTL_F_RJT] = "LC fabric reject", \ [FC_RCTL_P_BSY] = "LC port busy", \ [FC_RCTL_F_BSY] = "LC fabric busy to data frame", \ [FC_RCTL_F_BSYL] = "LC fabric busy to link control frame",\ [FC_RCTL_LCR] = "LC link credit reset", \ [FC_RCTL_END] = "LC end", \ } /* * Well-known fabric addresses. */ enum fc_well_known_fid { FC_FID_NONE = 0x000000, /* No destination */ FC_FID_BCAST = 0xffffff, /* broadcast */ FC_FID_FLOGI = 0xfffffe, /* fabric login */ FC_FID_FCTRL = 0xfffffd, /* fabric controller */ FC_FID_DIR_SERV = 0xfffffc, /* directory server */ FC_FID_TIME_SERV = 0xfffffb, /* time server */ FC_FID_MGMT_SERV = 0xfffffa, /* management server */ FC_FID_QOS = 0xfffff9, /* QoS Facilitator */ FC_FID_ALIASES = 0xfffff8, /* alias server (FC-PH2) */ FC_FID_SEC_KEY = 0xfffff7, /* Security key dist. server */ FC_FID_CLOCK = 0xfffff6, /* clock synch server */ FC_FID_MCAST_SERV = 0xfffff5, /* multicast server */ }; #define FC_FID_WELL_KNOWN_MAX 0xffffff /* highest well-known fabric ID */ #define FC_FID_WELL_KNOWN_BASE 0xfffff5 /* start of well-known fabric ID */ /* * Other well-known addresses, outside the above contiguous range. */ #define FC_FID_DOM_MGR 0xfffc00 /* domain manager base */ /* * Fabric ID bytes. */ #define FC_FID_DOMAIN 0 #define FC_FID_PORT 1 #define FC_FID_LINK 2 /* * fh_type codes */ enum fc_fh_type { FC_TYPE_BLS = 0x00, /* basic link service */ FC_TYPE_ELS = 0x01, /* extended link service */ FC_TYPE_IP = 0x05, /* IP over FC, RFC 4338 */ FC_TYPE_FCP = 0x08, /* SCSI FCP */ FC_TYPE_CT = 0x20, /* Fibre Channel Services (FC-CT) */ FC_TYPE_ILS = 0x22, /* internal link service */ FC_TYPE_NVME = 0x28, /* FC-NVME */ }; /* * FC_TYPE names initializer. * Please keep this matching the above definitions. */ #define FC_TYPE_NAMES_INIT { \ [FC_TYPE_BLS] = "BLS", \ [FC_TYPE_ELS] = "ELS", \ [FC_TYPE_IP] = "IP", \ [FC_TYPE_FCP] = "FCP", \ [FC_TYPE_CT] = "CT", \ [FC_TYPE_ILS] = "ILS", \ [FC_TYPE_NVME] = "NVME", \ } /* * Exchange IDs. */ #define FC_XID_UNKNOWN 0xffff /* unknown exchange ID */ #define FC_XID_MIN 0x0 /* supported min exchange ID */ #define FC_XID_MAX 0xfffe /* supported max exchange ID */ /* * fh_f_ctl - Frame control flags. */ #define FC_FC_EX_CTX (1 << 23) /* sent by responder to exchange */ #define FC_FC_SEQ_CTX (1 << 22) /* sent by responder to sequence */ #define FC_FC_FIRST_SEQ (1 << 21) /* first sequence of this exchange */ #define FC_FC_LAST_SEQ (1 << 20) /* last sequence of this exchange */ #define FC_FC_END_SEQ (1 << 19) /* last frame of sequence */ #define FC_FC_END_CONN (1 << 18) /* end of class 1 connection pending */ #define FC_FC_RES_B17 (1 << 17) /* reserved */ #define FC_FC_SEQ_INIT (1 << 16) /* transfer of sequence initiative */ #define FC_FC_X_ID_REASS (1 << 15) /* exchange ID has been changed */ #define FC_FC_X_ID_INVAL (1 << 14) /* exchange ID invalidated */ #define FC_FC_ACK_1 (1 << 12) /* 13:12 = 1: ACK_1 expected */ #define FC_FC_ACK_N (2 << 12) /* 13:12 = 2: ACK_N expected */ #define FC_FC_ACK_0 (3 << 12) /* 13:12 = 3: ACK_0 expected */ #define FC_FC_RES_B11 (1 << 11) /* reserved */ #define FC_FC_RES_B10 (1 << 10) /* reserved */ #define FC_FC_RETX_SEQ (1 << 9) /* retransmitted sequence */ #define FC_FC_UNI_TX (1 << 8) /* unidirectional transmit (class 1) */ #define FC_FC_CONT_SEQ(i) ((i) << 6) #define FC_FC_ABT_SEQ(i) ((i) << 4) #define FC_FC_REL_OFF (1 << 3) /* parameter is relative offset */ #define FC_FC_RES2 (1 << 2) /* reserved */ #define FC_FC_FILL(i) ((i) & 3) /* 1:0: bytes of trailing fill */ /* * BA_ACC payload. */ struct fc_ba_acc { __u8 ba_seq_id_val; /* SEQ_ID validity */ #define FC_BA_SEQ_ID_VAL 0x80 __u8 ba_seq_id; /* SEQ_ID of seq last deliverable */ __u8 ba_resvd[2]; /* reserved */ __be16 ba_ox_id; /* OX_ID for aborted seq or exch */ __be16 ba_rx_id; /* RX_ID for aborted seq or exch */ __be16 ba_low_seq_cnt; /* low SEQ_CNT of aborted seq */ __be16 ba_high_seq_cnt; /* high SEQ_CNT of aborted seq */ }; /* * BA_RJT: Basic Reject payload. */ struct fc_ba_rjt { __u8 br_resvd; /* reserved */ __u8 br_reason; /* reason code */ __u8 br_explan; /* reason explanation */ __u8 br_vendor; /* vendor unique code */ }; /* * BA_RJT reason codes. * From FS-2. */ enum fc_ba_rjt_reason { FC_BA_RJT_NONE = 0, /* in software this means no reject */ FC_BA_RJT_INVL_CMD = 0x01, /* invalid command code */ FC_BA_RJT_LOG_ERR = 0x03, /* logical error */ FC_BA_RJT_LOG_BUSY = 0x05, /* logical busy */ FC_BA_RJT_PROTO_ERR = 0x07, /* protocol error */ FC_BA_RJT_UNABLE = 0x09, /* unable to perform request */ FC_BA_RJT_VENDOR = 0xff, /* vendor-specific (see br_vendor) */ }; /* * BA_RJT reason code explanations. */ enum fc_ba_rjt_explan { FC_BA_RJT_EXP_NONE = 0x00, /* no additional expanation */ FC_BA_RJT_INV_XID = 0x03, /* invalid OX_ID-RX_ID combination */ FC_BA_RJT_ABT = 0x05, /* sequence aborted, no seq info */ }; /* * P_RJT or F_RJT: Port Reject or Fabric Reject parameter field. */ struct fc_pf_rjt { __u8 rj_action; /* reserved */ __u8 rj_reason; /* reason code */ __u8 rj_resvd; /* reserved */ __u8 rj_vendor; /* vendor unique code */ }; /* * P_RJT and F_RJT reject reason codes. */ enum fc_pf_rjt_reason { FC_RJT_NONE = 0, /* non-reject (reserved by standard) */ FC_RJT_INVL_DID = 0x01, /* invalid destination ID */ FC_RJT_INVL_SID = 0x02, /* invalid source ID */ FC_RJT_P_UNAV_T = 0x03, /* port unavailable, temporary */ FC_RJT_P_UNAV = 0x04, /* port unavailable, permanent */ FC_RJT_CLS_UNSUP = 0x05, /* class not supported */ FC_RJT_DEL_USAGE = 0x06, /* delimiter usage error */ FC_RJT_TYPE_UNSUP = 0x07, /* type not supported */ FC_RJT_LINK_CTL = 0x08, /* invalid link control */ FC_RJT_R_CTL = 0x09, /* invalid R_CTL field */ FC_RJT_F_CTL = 0x0a, /* invalid F_CTL field */ FC_RJT_OX_ID = 0x0b, /* invalid originator exchange ID */ FC_RJT_RX_ID = 0x0c, /* invalid responder exchange ID */ FC_RJT_SEQ_ID = 0x0d, /* invalid sequence ID */ FC_RJT_DF_CTL = 0x0e, /* invalid DF_CTL field */ FC_RJT_SEQ_CNT = 0x0f, /* invalid SEQ_CNT field */ FC_RJT_PARAM = 0x10, /* invalid parameter field */ FC_RJT_EXCH_ERR = 0x11, /* exchange error */ FC_RJT_PROTO = 0x12, /* protocol error */ FC_RJT_LEN = 0x13, /* incorrect length */ FC_RJT_UNEXP_ACK = 0x14, /* unexpected ACK */ FC_RJT_FAB_CLASS = 0x15, /* class unsupported by fabric entity */ FC_RJT_LOGI_REQ = 0x16, /* login required */ FC_RJT_SEQ_XS = 0x17, /* excessive sequences attempted */ FC_RJT_EXCH_EST = 0x18, /* unable to establish exchange */ FC_RJT_FAB_UNAV = 0x1a, /* fabric unavailable */ FC_RJT_VC_ID = 0x1b, /* invalid VC_ID (class 4) */ FC_RJT_CS_CTL = 0x1c, /* invalid CS_CTL field */ FC_RJT_INSUF_RES = 0x1d, /* insuff. resources for VC (Class 4) */ FC_RJT_INVL_CLS = 0x1f, /* invalid class of service */ FC_RJT_PREEMT_RJT = 0x20, /* preemption request rejected */ FC_RJT_PREEMT_DIS = 0x21, /* preemption not enabled */ FC_RJT_MCAST_ERR = 0x22, /* multicast error */ FC_RJT_MCAST_ET = 0x23, /* multicast error terminate */ FC_RJT_PRLI_REQ = 0x24, /* process login required */ FC_RJT_INVL_ATT = 0x25, /* invalid attachment */ FC_RJT_VENDOR = 0xff, /* vendor specific reject */ }; /* default timeout values */ #define FC_DEF_E_D_TOV 2000UL #define FC_DEF_R_A_TOV 10000UL #endif /* _FC_FS_H_ */