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#ifndef _IPXE_EOIB_H
#define _IPXE_EOIB_H
/** @file
*
* Ethernet over Infiniband
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <byteswap.h>
#include <ipxe/netdevice.h>
#include <ipxe/infiniband.h>
#include <ipxe/ib_mcast.h>
/** An EoIB header */
struct eoib_header {
/** Signature */
uint16_t magic;
/** Reserved */
uint16_t reserved;
} __attribute__ (( packed ));
/** EoIB magic signature */
#define EOIB_MAGIC 0x8919
/** An EoIB device */
struct eoib_device {
/** Name */
const char *name;
/** Network device */
struct net_device *netdev;
/** Underlying Infiniband device */
struct ib_device *ibdev;
/** List of EoIB devices */
struct list_head list;
/** Broadcast address */
struct ib_address_vector broadcast;
/** Completion queue */
struct ib_completion_queue *cq;
/** Queue pair */
struct ib_queue_pair *qp;
/** Broadcast group membership */
struct ib_mc_membership membership;
/** Peer cache */
struct list_head peers;
/** Send duplicate packet to gateway (or NULL)
*
* @v eoib EoIB device
* @v original Original I/O buffer
*/
void ( * duplicate ) ( struct eoib_device *eoib,
struct io_buffer *original );
/** Gateway (if any) */
struct ib_address_vector gateway;
/** Multicast group additional component mask */
unsigned int mask;
};
/**
* Check if EoIB device uses a gateway
*
* @v eoib EoIB device
* @v has_gw EoIB device uses a gateway
*/
static inline int eoib_has_gateway ( struct eoib_device *eoib ) {
return ( eoib->duplicate != NULL );
}
/**
* Force creation of multicast group
*
* @v eoib EoIB device
*/
static inline void eoib_force_group_creation ( struct eoib_device *eoib ) {
/* Some dubious EoIB implementations require each endpoint to
* force the creation of the multicast group. Yes, this makes
* it impossible for the group parameters (e.g. SL) to ever be
* modified without breaking backwards compatiblity with every
* existing driver.
*/
eoib->mask = ( IB_SA_MCMEMBER_REC_PKEY | IB_SA_MCMEMBER_REC_QKEY |
IB_SA_MCMEMBER_REC_SL | IB_SA_MCMEMBER_REC_FLOW_LABEL |
IB_SA_MCMEMBER_REC_TRAFFIC_CLASS );
}
extern int eoib_create ( struct ib_device *ibdev, const uint8_t *hw_addr,
struct ib_address_vector *broadcast,
const char *name );
extern struct eoib_device * eoib_find ( struct ib_device *ibdev,
const uint8_t *hw_addr );
extern void eoib_destroy ( struct eoib_device *eoib );
extern void eoib_set_gateway ( struct eoib_device *eoib,
struct ib_address_vector *av );
#endif /* _IPXE_EOIB_H */
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