167 lines
4.1 KiB
C
167 lines
4.1 KiB
C
#ifndef _IPXE_IB_PACKET_H
|
|
#define _IPXE_IB_PACKET_H
|
|
|
|
/** @file
|
|
*
|
|
* Infiniband packet format
|
|
*
|
|
*/
|
|
|
|
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
|
|
|
|
struct ib_device;
|
|
struct ib_queue_pair;
|
|
struct ib_address_vector;
|
|
struct io_buffer;
|
|
|
|
/** An Infiniband Globally Unique Identifier */
|
|
union ib_guid {
|
|
uint8_t bytes[8];
|
|
uint16_t words[4];
|
|
uint32_t dwords[2];
|
|
uint64_t qword;
|
|
};
|
|
|
|
/** Infiniband Globally Unique Identifier debug message format */
|
|
#define IB_GUID_FMT "%08x:%08x"
|
|
|
|
/** Infiniband Globally Unique Identifier debug message arguments */
|
|
#define IB_GUID_ARGS( guid ) \
|
|
ntohl ( (guid)->dwords[0] ), ntohl ( (guid)->dwords[1] )
|
|
|
|
/** An Infiniband Global Identifier */
|
|
union ib_gid {
|
|
uint8_t bytes[16];
|
|
uint16_t words[8];
|
|
uint32_t dwords[4];
|
|
uint64_t qwords[2];
|
|
struct {
|
|
union ib_guid prefix;
|
|
union ib_guid guid;
|
|
} s;
|
|
};
|
|
|
|
/** Infiniband Global Identifier debug message format */
|
|
#define IB_GID_FMT IB_GUID_FMT ":" IB_GUID_FMT
|
|
|
|
/** Infiniband Global Identifier debug message arguments */
|
|
#define IB_GID_ARGS( gid ) \
|
|
IB_GUID_ARGS ( &(gid)->s.prefix ), IB_GUID_ARGS ( &(gid)->s.guid )
|
|
|
|
/** Test for multicast GID */
|
|
#define IB_GID_MULTICAST( gid ) ( (gid)->bytes[0] == 0xff )
|
|
|
|
/** An Infiniband Local Route Header */
|
|
struct ib_local_route_header {
|
|
/** Virtual lane and link version */
|
|
uint8_t vl__lver;
|
|
/** Service level and next link header */
|
|
uint8_t sl__lnh;
|
|
/** Destination LID */
|
|
uint16_t dlid;
|
|
/** Packet length */
|
|
uint16_t length;
|
|
/** Source LID */
|
|
uint16_t slid;
|
|
} __attribute__ (( packed ));
|
|
|
|
/** Infiniband virtual lanes */
|
|
enum ib_vl {
|
|
IB_VL_DEFAULT = 0,
|
|
IB_VL_SMP = 15,
|
|
};
|
|
|
|
/** An Infiniband Link Next Header value */
|
|
enum ib_lnh {
|
|
IB_LNH_RAW = 0,
|
|
IB_LNH_IPv6 = 1,
|
|
IB_LNH_BTH = 2,
|
|
IB_LNH_GRH = 3
|
|
};
|
|
|
|
/** Default Infiniband LID */
|
|
#define IB_LID_NONE 0xffff
|
|
|
|
/** Test for multicast LID */
|
|
#define IB_LID_MULTICAST( lid ) ( ( (lid) >= 0xc000 ) && ( (lid) <= 0xfffe ) )
|
|
|
|
/** An Infiniband Global Route Header */
|
|
struct ib_global_route_header {
|
|
/** IP version, traffic class, and flow label
|
|
*
|
|
* 4 bits : Version of the GRH
|
|
* 8 bits : Traffic class
|
|
* 20 bits : Flow label
|
|
*/
|
|
uint32_t ipver__tclass__flowlabel;
|
|
/** Payload length */
|
|
uint16_t paylen;
|
|
/** Next header */
|
|
uint8_t nxthdr;
|
|
/** Hop limit */
|
|
uint8_t hoplmt;
|
|
/** Source GID */
|
|
union ib_gid sgid;
|
|
/** Destiniation GID */
|
|
union ib_gid dgid;
|
|
} __attribute__ (( packed ));
|
|
|
|
#define IB_GRH_IPVER_IPv6 0x06
|
|
#define IB_GRH_NXTHDR_IBA 0x1b
|
|
|
|
/** An Infiniband Base Transport Header */
|
|
struct ib_base_transport_header {
|
|
/** Opcode */
|
|
uint8_t opcode;
|
|
/** Transport header version, pad count, migration and solicitation */
|
|
uint8_t se__m__padcnt__tver;
|
|
/** Partition key */
|
|
uint16_t pkey;
|
|
/** Destination queue pair */
|
|
uint32_t dest_qp;
|
|
/** Packet sequence number and acknowledge request */
|
|
uint32_t ack__psn;
|
|
} __attribute__ (( packed ));
|
|
|
|
/** An Infiniband BTH opcode */
|
|
enum ib_bth_opcode {
|
|
BTH_OPCODE_UD_SEND = 0x64,
|
|
};
|
|
|
|
/** An Infiniband Datagram Extended Transport Header */
|
|
struct ib_datagram_extended_transport_header {
|
|
/** Queue key */
|
|
uint32_t qkey;
|
|
/** Source queue pair */
|
|
uint32_t src_qp;
|
|
} __attribute__ (( packed ));
|
|
|
|
/** All known IB header formats */
|
|
union ib_headers {
|
|
struct ib_local_route_header lrh;
|
|
struct {
|
|
struct ib_local_route_header lrh;
|
|
struct ib_global_route_header grh;
|
|
struct ib_base_transport_header bth;
|
|
struct ib_datagram_extended_transport_header deth;
|
|
} __attribute__ (( packed )) lrh__grh__bth__deth;
|
|
struct {
|
|
struct ib_local_route_header lrh;
|
|
struct ib_base_transport_header bth;
|
|
struct ib_datagram_extended_transport_header deth;
|
|
} __attribute__ (( packed )) lrh__bth__deth;
|
|
} __attribute__ (( packed ));
|
|
|
|
/** Maximum size required for IB headers */
|
|
#define IB_MAX_HEADER_SIZE sizeof ( union ib_headers )
|
|
|
|
extern int ib_push ( struct ib_device *ibdev, struct io_buffer *iobuf,
|
|
struct ib_queue_pair *qp, size_t payload_len,
|
|
const struct ib_address_vector *dest );
|
|
extern int ib_pull ( struct ib_device *ibdev, struct io_buffer *iobuf,
|
|
struct ib_queue_pair **qp, size_t *payload_len,
|
|
struct ib_address_vector *dest,
|
|
struct ib_address_vector *source );
|
|
|
|
#endif /* _IPXE_IB_PACKET_H */
|