[SCSI] fcoe: Add a header file defining the FIP protocol for FCoE.
Adds include/scsi/fc/fc_fip.h for FIP protocol definitions. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Joe Eykholt
James Bottomley
Родитель
a0a25da2a4
Коммит
af5f428763
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/*
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* Copyright 2008 Cisco Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _FC_FIP_H_
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#define _FC_FIP_H_
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/*
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* This version is based on:
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* http://www.t11.org/ftp/t11/pub/fc/bb-5/08-543v1.pdf
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*/
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/*
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* The FIP ethertype eventually goes in net/if_ether.h.
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*/
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#ifndef ETH_P_FIP
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#define ETH_P_FIP 0x8914 /* FIP Ethertype */
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#endif
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#define FIP_DEF_PRI 128 /* default selection priority */
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#define FIP_DEF_FC_MAP 0x0efc00 /* default FCoE MAP (MAC OUI) value */
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#define FIP_DEF_FKA 8000 /* default FCF keep-alive/advert period (mS) */
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#define FIP_VN_KA_PERIOD 90000 /* required VN_port keep-alive period (mS) */
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#define FIP_FCF_FUZZ 100 /* random time added by FCF (mS) */
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/*
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* Multicast MAC addresses. T11-adopted.
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*/
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#define FIP_ALL_FCOE_MACS ((u8[6]) { 1, 0x10, 0x18, 1, 0, 0 })
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#define FIP_ALL_ENODE_MACS ((u8[6]) { 1, 0x10, 0x18, 1, 0, 1 })
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#define FIP_ALL_FCF_MACS ((u8[6]) { 1, 0x10, 0x18, 1, 0, 2 })
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#define FIP_VER 1 /* version for fip_header */
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struct fip_header {
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__u8 fip_ver; /* upper 4 bits are the version */
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__u8 fip_resv1; /* reserved */
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__be16 fip_op; /* operation code */
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__u8 fip_resv2; /* reserved */
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__u8 fip_subcode; /* lower 4 bits are sub-code */
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__be16 fip_dl_len; /* length of descriptors in words */
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__be16 fip_flags; /* header flags */
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} __attribute__((packed));
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#define FIP_VER_SHIFT 4
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#define FIP_VER_ENCAPS(v) ((v) << FIP_VER_SHIFT)
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#define FIP_VER_DECAPS(v) ((v) >> FIP_VER_SHIFT)
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#define FIP_BPW 4 /* bytes per word for lengths */
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/*
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* fip_op.
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*/
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enum fip_opcode {
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FIP_OP_DISC = 1, /* discovery, advertisement, etc. */
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FIP_OP_LS = 2, /* Link Service request or reply */
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FIP_OP_CTRL = 3, /* Keep Alive / Link Reset */
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FIP_OP_VLAN = 4, /* VLAN discovery */
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FIP_OP_VENDOR_MIN = 0xfff8, /* min vendor-specific opcode */
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FIP_OP_VENDOR_MAX = 0xfffe, /* max vendor-specific opcode */
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};
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/*
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* Subcodes for FIP_OP_DISC.
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*/
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enum fip_disc_subcode {
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FIP_SC_SOL = 1, /* solicitation */
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FIP_SC_ADV = 2, /* advertisement */
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};
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/*
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* Subcodes for FIP_OP_LS.
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*/
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enum fip_trans_subcode {
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FIP_SC_REQ = 1, /* request */
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FIP_SC_REP = 2, /* reply */
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};
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/*
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* Subcodes for FIP_OP_RESET.
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*/
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enum fip_reset_subcode {
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FIP_SC_KEEP_ALIVE = 1, /* keep-alive from VN_Port */
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FIP_SC_CLR_VLINK = 2, /* clear virtual link from VF_Port */
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};
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/*
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* Subcodes for FIP_OP_VLAN.
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*/
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enum fip_vlan_subcode {
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FIP_SC_VL_REQ = 1, /* request */
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FIP_SC_VL_REP = 2, /* reply */
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};
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/*
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* flags in header fip_flags.
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*/
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enum fip_flag {
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FIP_FL_FPMA = 0x8000, /* supports FPMA fabric-provided MACs */
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FIP_FL_SPMA = 0x4000, /* supports SPMA server-provided MACs */
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FIP_FL_AVAIL = 0x0004, /* available for FLOGI/ELP */
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FIP_FL_SOL = 0x0002, /* this is a solicited message */
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FIP_FL_FPORT = 0x0001, /* sent from an F port */
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};
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/*
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* Common descriptor header format.
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*/
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struct fip_desc {
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__u8 fip_dtype; /* type - see below */
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__u8 fip_dlen; /* length - in 32-bit words */
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};
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enum fip_desc_type {
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FIP_DT_PRI = 1, /* priority for forwarder selection */
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FIP_DT_MAC = 2, /* MAC address */
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FIP_DT_MAP_OUI = 3, /* FC-MAP OUI */
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FIP_DT_NAME = 4, /* switch name or node name */
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FIP_DT_FAB = 5, /* fabric descriptor */
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FIP_DT_FCOE_SIZE = 6, /* max FCoE frame size */
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FIP_DT_FLOGI = 7, /* FLOGI request or response */
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FIP_DT_FDISC = 8, /* FDISC request or response */
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FIP_DT_LOGO = 9, /* LOGO request or response */
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FIP_DT_ELP = 10, /* ELP request or response */
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FIP_DT_VN_ID = 11, /* VN_Node Identifier */
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FIP_DT_FKA = 12, /* advertisement keep-alive period */
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FIP_DT_VENDOR = 13, /* vendor ID */
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FIP_DT_VLAN = 14, /* vlan number */
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FIP_DT_LIMIT, /* max defined desc_type + 1 */
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FIP_DT_VENDOR_BASE = 128, /* first vendor-specific desc_type */
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};
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/*
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* FIP_DT_PRI - priority descriptor.
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*/
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struct fip_pri_desc {
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struct fip_desc fd_desc;
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__u8 fd_resvd;
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__u8 fd_pri; /* FCF priority: higher is better */
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} __attribute__((packed));
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/*
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* FIP_DT_MAC - MAC address descriptor.
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*/
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struct fip_mac_desc {
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struct fip_desc fd_desc;
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__u8 fd_mac[ETH_ALEN];
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} __attribute__((packed));
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/*
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* FIP_DT_MAP - descriptor.
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*/
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struct fip_map_desc {
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struct fip_desc fd_desc;
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__u8 fd_resvd[3];
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__u8 fd_map[3];
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} __attribute__((packed));
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/*
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* FIP_DT_NAME descriptor.
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*/
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struct fip_wwn_desc {
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struct fip_desc fd_desc;
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__u8 fd_resvd[2];
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__be64 fd_wwn; /* 64-bit WWN, unaligned */
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} __attribute__((packed));
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/*
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* FIP_DT_FAB descriptor.
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*/
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struct fip_fab_desc {
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struct fip_desc fd_desc;
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__be16 fd_vfid; /* virtual fabric ID */
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__u8 fd_resvd;
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__u8 fd_map[3]; /* FC-MAP value */
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__be64 fd_wwn; /* fabric name, unaligned */
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} __attribute__((packed));
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/*
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* FIP_DT_FCOE_SIZE descriptor.
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*/
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struct fip_size_desc {
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struct fip_desc fd_desc;
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__be16 fd_size;
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} __attribute__((packed));
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/*
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* Descriptor that encapsulates an ELS or ILS frame.
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* The encapsulated frame immediately follows this header, without
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* SOF, EOF, or CRC.
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*/
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struct fip_encaps {
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struct fip_desc fd_desc;
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__u8 fd_resvd[2];
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} __attribute__((packed));
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/*
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* FIP_DT_VN_ID - VN_Node Identifier descriptor.
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*/
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struct fip_vn_desc {
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struct fip_desc fd_desc;
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__u8 fd_mac[ETH_ALEN];
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__u8 fd_resvd;
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__u8 fd_fc_id[3];
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__be64 fd_wwpn; /* port name, unaligned */
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} __attribute__((packed));
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/*
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* FIP_DT_FKA - Advertisement keep-alive period.
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*/
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struct fip_fka_desc {
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struct fip_desc fd_desc;
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__u8 fd_resvd[2];
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__be32 fd_fka_period; /* adv./keep-alive period in mS */
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} __attribute__((packed));
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/*
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* FIP_DT_VENDOR descriptor.
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*/
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struct fip_vendor_desc {
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struct fip_desc fd_desc;
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__u8 fd_resvd[2];
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__u8 fd_vendor_id[8];
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} __attribute__((packed));
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#endif /* _FC_FIP_H_ */
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