ipoib.h

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#ifndef _GPXE_IPOIB_H
#define _GPXE_IPOIB_H

/** @file
 *
 * IP over Infiniband
 */

FILE_LICENCE ( GPL2_OR_LATER );

#include <gpxe/infiniband.h>

/** IPoIB MAC address length */
#define IPOIB_ALEN 20

/** An IPoIB MAC address */
struct ipoib_mac {
        /** Queue pair number
         *
         * MSB indicates support for IPoIB "connected mode".  Lower 24
         * bits are the QPN.
         */
        uint32_t flags__qpn;
        /** Port GID */
        struct ib_gid gid;
} __attribute__ (( packed ));

/** IPoIB link-layer header length */
#define IPOIB_HLEN 4

/** IPoIB link-layer header */
struct ipoib_hdr {
        /** Network-layer protocol */
        uint16_t proto;
        /** Reserved, must be zero */
        union {
                /** Reserved, must be zero */
                uint16_t reserved;
                /** Peer addresses
                 *
                 * We use these fields internally to represent the
                 * peer addresses using a lookup key.  There simply
                 * isn't enough room in the IPoIB header to store
                 * literal source or destination MAC addresses.
                 */
                struct {
                        /** Destination address key */
                        uint8_t dest;
                        /** Source address key */
                        uint8_t src;
                } __attribute__ (( packed )) peer;
        } __attribute__ (( packed )) u;
} __attribute__ (( packed ));

extern const char * ipoib_ntoa ( const void *ll_addr );
extern void ipoib_link_state_changed ( struct ib_device *ibdev );
extern int ipoib_probe ( struct ib_device *ibdev );
extern void ipoib_remove ( struct ib_device *ibdev );
extern struct net_device * alloc_ipoibdev ( size_t priv_size );

#endif /* _GPXE_IPOIB_H */