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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
*/
#ifndef _FC_FIP_H_
#define _FC_FIP_H_
#include <scsi/fc/fc_ns.h>
/*
* This version is based on:
* http://www.t11.org/ftp/t11/pub/fc/bb-5/08-543v1.pdf
* and T11 FC-BB-6 13-091v5.pdf (December 2013 VN2VN proposal)
*/
#define FIP_DEF_PRI 128 /* default selection priority */
#define FIP_DEF_FC_MAP 0x0efc00 /* default FCoE MAP (MAC OUI) value */
#define FIP_DEF_FKA 8000 /* default FCF keep-alive/advert period (mS) */
#define FIP_VN_KA_PERIOD 90000 /* required VN_port keep-alive period (mS) */
#define FIP_FCF_FUZZ 100 /* random time added by FCF (mS) */
/*
* VN2VN proposed-standard values.
*/
#define FIP_VN_FC_MAP 0x0efd00 /* MAC OUI for VN2VN use */
#define FIP_VN_PROBE_WAIT 100 /* interval between VN2VN probes (ms) */
#define FIP_VN_ANN_WAIT 400 /* interval between VN2VN announcements (ms) */
#define FIP_VN_RLIM_INT 10000 /* interval between probes when rate limited */
#define FIP_VN_RLIM_COUNT 10 /* number of probes before rate limiting */
#define FIP_VN_BEACON_INT 8000 /* interval between VN2VN beacons */
#define FIP_VN_BEACON_FUZZ 100 /* random time to add to beacon period (ms) */
/*
* Multicast MAC addresses. T11-adopted.
*/
#define FIP_ALL_FCOE_MACS ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 0 })
#define FIP_ALL_ENODE_MACS ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 1 })
#define FIP_ALL_FCF_MACS ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 2 })
#define FIP_ALL_VN2VN_MACS ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 4 })
#define FIP_ALL_P2P_MACS ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 5 })
#define FIP_VER 1 /* version for fip_header */
struct fip_header {
__u8 fip_ver; /* upper 4 bits are the version */
__u8 fip_resv1; /* reserved */
__be16 fip_op; /* operation code */
__u8 fip_resv2; /* reserved */
__u8 fip_subcode; /* lower 4 bits are sub-code */
__be16 fip_dl_len; /* length of descriptors in words */
__be16 fip_flags; /* header flags */
} __attribute__((packed));
#define FIP_VER_SHIFT 4
#define FIP_VER_ENCAPS(v) ((v) << FIP_VER_SHIFT)
#define FIP_VER_DECAPS(v) ((v) >> FIP_VER_SHIFT)
#define FIP_BPW 4 /* bytes per word for lengths */
/*
* fip_op.
*/
enum fip_opcode {
FIP_OP_DISC = 1, /* discovery, advertisement, etc. */
FIP_OP_LS = 2, /* Link Service request or reply */
FIP_OP_CTRL = 3, /* Keep Alive / Link Reset */
FIP_OP_VLAN = 4, /* VLAN discovery */
FIP_OP_VN2VN = 5, /* VN2VN operation */
FIP_OP_VENDOR_MIN = 0xfff8, /* min vendor-specific opcode */
FIP_OP_VENDOR_MAX = 0xfffe, /* max vendor-specific opcode */
};
/*
* Subcodes for FIP_OP_DISC.
*/
enum fip_disc_subcode {
FIP_SC_SOL = 1, /* solicitation */
FIP_SC_ADV = 2, /* advertisement */
};
/*
* Subcodes for FIP_OP_LS.
*/
enum fip_trans_subcode {
FIP_SC_REQ = 1, /* request */
FIP_SC_REP = 2, /* reply */
};
/*
* Subcodes for FIP_OP_RESET.
*/
enum fip_reset_subcode {
FIP_SC_KEEP_ALIVE = 1, /* keep-alive from VN_Port */
FIP_SC_CLR_VLINK = 2, /* clear virtual link from VF_Port */
};
/*
* Subcodes for FIP_OP_VLAN.
*/
enum fip_vlan_subcode {
FIP_SC_VL_REQ = 1, /* vlan request */
FIP_SC_VL_NOTE = 2, /* vlan notification */
FIP_SC_VL_VN2VN_NOTE = 3, /* VN2VN vlan notification */
};
/*
* Subcodes for FIP_OP_VN2VN.
*/
enum fip_vn2vn_subcode {
FIP_SC_VN_PROBE_REQ = 1, /* probe request */
FIP_SC_VN_PROBE_REP = 2, /* probe reply */
FIP_SC_VN_CLAIM_NOTIFY = 3, /* claim notification */
FIP_SC_VN_CLAIM_REP = 4, /* claim response */
FIP_SC_VN_BEACON = 5, /* beacon */
};
/*
* flags in header fip_flags.
*/
enum fip_flag {
FIP_FL_FPMA = 0x8000, /* supports FPMA fabric-provided MACs */
FIP_FL_SPMA = 0x4000, /* supports SPMA server-provided MACs */
FIP_FL_FCF = 0x0020, /* originated from a controlling FCF */
FIP_FL_FDF = 0x0010, /* originated from an FDF */
FIP_FL_REC_OR_P2P = 0x0008, /* configured addr or point-to-point */
FIP_FL_AVAIL = 0x0004, /* available for FLOGI/ELP */
FIP_FL_SOL = 0x0002, /* this is a solicited message */
FIP_FL_FPORT = 0x0001, /* sent from an F port */
};
/*
* Common descriptor header format.
*/
struct fip_desc {
__u8 fip_dtype; /* type - see below */
__u8 fip_dlen; /* length - in 32-bit words */
};
enum fip_desc_type {
FIP_DT_PRI = 1, /* priority for forwarder selection */
FIP_DT_MAC = 2, /* MAC address */
FIP_DT_MAP_OUI = 3, /* FC-MAP OUI */
FIP_DT_NAME = 4, /* switch name or node name */
FIP_DT_FAB = 5, /* fabric descriptor */
FIP_DT_FCOE_SIZE = 6, /* max FCoE frame size */
FIP_DT_FLOGI = 7, /* FLOGI request or response */
FIP_DT_FDISC = 8, /* FDISC request or response */
FIP_DT_LOGO = 9, /* LOGO request or response */
FIP_DT_ELP = 10, /* ELP request or response */
FIP_DT_VN_ID = 11, /* VN_Node Identifier */
FIP_DT_FKA = 12, /* advertisement keep-alive period */
FIP_DT_VENDOR = 13, /* vendor ID */
FIP_DT_VLAN = 14, /* vlan number */
FIP_DT_FC4F = 15, /* FC-4 features */
FIP_DT_LIMIT, /* max defined desc_type + 1 */
FIP_DT_NON_CRITICAL = 128, /* First non-critical descriptor */
FIP_DT_CLR_VLINKS = 128, /* Clear virtual links reason code */
FIP_DT_VENDOR_BASE = 241, /* first vendor-specific desc_type */
};
/*
* FIP_DT_PRI - priority descriptor.
*/
struct fip_pri_desc {
struct fip_desc fd_desc;
__u8 fd_resvd;
__u8 fd_pri; /* FCF priority: higher is better */
} __attribute__((packed));
/*
* FIP_DT_MAC - MAC address descriptor.
*/
struct fip_mac_desc {
struct fip_desc fd_desc;
__u8 fd_mac[ETH_ALEN];
} __attribute__((packed));
/*
* FIP_DT_MAP - descriptor.
*/
struct fip_map_desc {
struct fip_desc fd_desc;
__u8 fd_resvd[3];
__u8 fd_map[3];
} __attribute__((packed));
/*
* FIP_DT_NAME descriptor.
*/
struct fip_wwn_desc {
struct fip_desc fd_desc;
__u8 fd_resvd[2];
__be64 fd_wwn; /* 64-bit WWN, unaligned */
} __attribute__((packed));
/*
* FIP_DT_FAB descriptor.
*/
struct fip_fab_desc {
struct fip_desc fd_desc;
__be16 fd_vfid; /* virtual fabric ID */
__u8 fd_resvd;
__u8 fd_map[3]; /* FC-MAP value */
__be64 fd_wwn; /* fabric name, unaligned */
} __attribute__((packed));
/*
* FIP_DT_FCOE_SIZE descriptor.
*/
struct fip_size_desc {
struct fip_desc fd_desc;
__be16 fd_size;
} __attribute__((packed));
/*
* Descriptor that encapsulates an ELS or ILS frame.
* The encapsulated frame immediately follows this header, without
* SOF, EOF, or CRC.
*/
struct fip_encaps {
struct fip_desc fd_desc;
__u8 fd_resvd[2];
} __attribute__((packed));
/*
* FIP_DT_VN_ID - VN_Node Identifier descriptor.
*/
struct fip_vn_desc {
struct fip_desc fd_desc;
__u8 fd_mac[ETH_ALEN];
__u8 fd_resvd;
__u8 fd_fc_id[3];
__be64 fd_wwpn; /* port name, unaligned */
} __attribute__((packed));
/*
* FIP_DT_FKA - Advertisement keep-alive period.
*/
struct fip_fka_desc {
struct fip_desc fd_desc;
__u8 fd_resvd;
__u8 fd_flags; /* bit0 is fka disable flag */
__be32 fd_fka_period; /* adv./keep-alive period in mS */
} __attribute__((packed));
/*
* flags for fip_fka_desc.fd_flags
*/
enum fip_fka_flags {
FIP_FKA_ADV_D = 0x01, /* no need for FKA from ENode */
};
/* FIP_DT_FKA flags */
/*
* FIP_DT_VLAN descriptor
*/
struct fip_vlan_desc {
struct fip_desc fd_desc;
__be16 fd_vlan; /* Note: highest 4 bytes are unused */
} __attribute__((packed));
/*
* FIP_DT_FC4F - FC-4 features.
*/
struct fip_fc4_feat {
struct fip_desc fd_desc;
__u8 fd_resvd[2];
struct fc_ns_fts fd_fts;
struct fc_ns_ff fd_ff;
} __attribute__((packed));
/*
* FIP_DT_VENDOR descriptor.
*/
struct fip_vendor_desc {
struct fip_desc fd_desc;
__u8 fd_resvd[2];
__u8 fd_vendor_id[8];
} __attribute__((packed));
#endif /* _FC_FIP_H_ */
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