fcoe.h

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#ifndef _IPXE_FCOE_H
#define _IPXE_FCOE_H

/**
 * @file
 *
 * Fibre Channel over Ethernet
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );

#include <stdint.h>
#include <ipxe/fc.h>
#include <ipxe/if_ether.h>

/** An FCoE name */
union fcoe_name {
        /** Fibre Channel name */
        struct fc_name fc;
        /** FCoE name */
        struct {
                /** Naming authority */
                uint16_t authority;
                /** MAC address */
                uint8_t mac[ETH_ALEN];
        } __attribute__ (( packed )) fcoe;
};

/** IEEE 48-bit address */
#define FCOE_AUTHORITY_IEEE 0x1000

/** IEEE extended */
#define FCOE_AUTHORITY_IEEE_EXTENDED 0x2000

/** An FCoE MAC address prefix (FC-MAP) */
struct fcoe_map {
        uint8_t bytes[3];
} __attribute__ (( packed ));

/** An FCoE (fabric-assigned) MAC address */
struct fcoe_mac {
        /** MAC address prefix */
        struct fcoe_map map;
        /** Port ID */
        struct fc_port_id port_id;
} __attribute__ (( packed ));

/** An FCoE header */
struct fcoe_header {
        /** FCoE frame version */
        uint8_t version;
        /** Reserved */
        uint8_t reserved[12];
        /** Start of Frame marker */
        uint8_t sof;
} __attribute__ (( packed ));

/** FCoE frame version */
#define FCOE_FRAME_VER 0x00

/** Start of Frame marker values */
enum fcoe_sof {
        FCOE_SOF_F = 0x28,      /**< Start of Frame Class F */
        FCOE_SOF_I2 = 0x2d,     /**< Start of Frame Initiate Class 2 */
        FCOE_SOF_N2 = 0x35,     /**< Start of Frame Normal Class 2 */
        FCOE_SOF_I3 = 0x2e,     /**< Start of Frame Initiate Class 3 */
        FCOE_SOF_N3 = 0x36,     /**< Start of Frame Normal Class 3 */
};

/** An FCoE footer */
struct fcoe_footer {
        /** CRC */
        uint32_t crc;
        /** End of frame marker */
        uint8_t eof;
        /** Reserved */
        uint8_t reserved[3];
} __attribute__ (( packed ));

/** End of Frame marker value */
enum fcoe_eof {
        FCOE_EOF_N = 0x41,      /**< End of Frame Normal */
        FCOE_EOF_T = 0x42,      /**< End of Frame Terminate */
        FCOE_EOF_NI = 0x49,     /**< End of Frame Invalid */
        FCOE_EOF_A = 0x50,      /**< End of Frame Abort */
};

/** FCoE VLAN priority */
#define FCOE_VLAN_PRIORITY 3

#endif /* _IPXE_FCOE_H */