cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fc_fcoe.h (2495B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright(c) 2007 Intel Corporation. All rights reserved.
      4 *
      5 * Maintained at www.Open-FCoE.org
      6 */
      7
      8#ifndef _FC_FCOE_H_
      9#define	_FC_FCOE_H_
     10
     11/*
     12 * FCoE - Fibre Channel over Ethernet.
     13 * See T11 FC-BB-5 Rev 2.00 (09-056v5.pdf)
     14 */
     15
     16/*
     17 * Default FC_FCOE_OUI / FC-MAP value.
     18 */
     19#define	FC_FCOE_OUI	0x0efc00	/* upper 24 bits of FCOE MAC */
     20
     21/*
     22 * Fabric Login (FLOGI) MAC for non-FIP use.  Non-FIP use is deprecated.
     23 */
     24#define	FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe }
     25
     26#define	FC_FCOE_VER	0			/* version */
     27
     28/*
     29 * Ethernet Addresses based on FC S_ID and D_ID.
     30 * Generated by FC_FCOE_OUI | S_ID/D_ID
     31 */
     32#define	FC_FCOE_ENCAPS_ID(n)	(((u64) FC_FCOE_OUI << 24) | (n))
     33#define	FC_FCOE_DECAPS_ID(n)	((n) >> 24)
     34
     35/*
     36 * FCoE frame header - 14 bytes
     37 * This follows the VLAN header, which includes the ethertype.
     38 */
     39struct fcoe_hdr {
     40	__u8		fcoe_ver;	/* version field - upper 4 bits */
     41	__u8		fcoe_resvd[12];	/* reserved - send zero and ignore */
     42	__u8		fcoe_sof;	/* start of frame per RFC 3643 */
     43};
     44
     45#define FC_FCOE_DECAPS_VER(hp)	    ((hp)->fcoe_ver >> 4)
     46#define FC_FCOE_ENCAPS_VER(hp, ver) ((hp)->fcoe_ver = (ver) << 4)
     47
     48/*
     49 * FCoE CRC & EOF - 8 bytes.
     50 */
     51struct fcoe_crc_eof {
     52	__le32		fcoe_crc32;	/* CRC for FC packet */
     53	__u8		fcoe_eof;	/* EOF from RFC 3643 */
     54	__u8		fcoe_resvd[3];	/* reserved - send zero and ignore */
     55} __attribute__((packed));
     56
     57/*
     58 * Minimum FCoE + FC header length
     59 * 14 bytes FCoE header + 24 byte FC header = 38 bytes
     60 */
     61#define FCOE_HEADER_LEN 38
     62
     63/*
     64 * Minimum FCoE frame size
     65 * 14 bytes FCoE header + 24 byte FC header + 8 byte FCoE trailer = 46 bytes
     66 */
     67#define FCOE_MIN_FRAME 46
     68
     69/*
     70 * FCoE Link Error Status Block: T11 FC-BB-5 Rev2.0, Clause 7.10.
     71 */
     72struct fcoe_fc_els_lesb {
     73	__be32		lesb_link_fail;	/* link failure count */
     74	__be32		lesb_vlink_fail; /* virtual link failure count */
     75	__be32		lesb_miss_fka;	/* missing FIP keep-alive count */
     76	__be32		lesb_symb_err;	/* symbol error during carrier count */
     77	__be32		lesb_err_block;	/* errored block count */
     78	__be32		lesb_fcs_error; /* frame check sequence error count */
     79};
     80
     81/*
     82 * fc_fcoe_set_mac - Store OUI + DID into MAC address field.
     83 * @mac: mac address to be set
     84 * @did: fc dest id to use
     85 */
     86static inline void fc_fcoe_set_mac(u8 *mac, u8 *did)
     87{
     88	mac[0] = (u8) (FC_FCOE_OUI >> 16);
     89	mac[1] = (u8) (FC_FCOE_OUI >> 8);
     90	mac[2] = (u8) FC_FCOE_OUI;
     91	mac[3] = did[0];
     92	mac[4] = did[1];
     93	mac[5] = did[2];
     94}
     95
     96#endif /* _FC_FCOE_H_ */