ipoib.h File Reference

IP over Infiniband. More...

#include <gpxe/infiniband.h>

Go to the source code of this file.

Data Structures
struct	ipoib_mac
	An IPoIB MAC address. More...
struct	ipoib_hdr
	IPoIB link-layer header. More...
Defines
#define	IPOIB_ALEN   20
	IPoIB MAC address length.
#define	IPOIB_HLEN   4
	IPoIB link-layer header length.
Functions
	FILE_LICENCE (GPL2_OR_LATER)
const char *	ipoib_ntoa (const void *ll_addr)
	Transcribe IPoIB link-layer address.
void	ipoib_link_state_changed (struct ib_device *ibdev)
	Handle link status change.
int	ipoib_probe (struct ib_device *ibdev)
	Probe IPoIB device.
void	ipoib_remove (struct ib_device *ibdev)
	Remove IPoIB device.
struct net_device *	alloc_ipoibdev (size_t priv_size)
	Allocate IPoIB device.

---

Detailed Description

IP over Infiniband.

Definition in file ipoib.h.

---

Define Documentation

#define IPOIB_ALEN   20

IPoIB MAC address length.

Definition at line 14 of file ipoib.h.

#define IPOIB_HLEN   4

IPoIB link-layer header length.

Definition at line 29 of file ipoib.h.

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

const char* ipoib_ntoa

(

const void *

ll_addr

)

Transcribe IPoIB link-layer address.

Parameters:

ll_addr

Link-layer address

Return values:

string

Link-layer address in human-readable format

Definition at line 280 of file ipoib.c.

References ib_gid::dwords, ipoib_mac::flags__qpn, ipoib_mac::gid, htonl, snprintf(), and ib_gid::u.

Referenced by ipoib_cache_peer().

                                                {
        static char buf[45];
        const struct ipoib_mac *mac = ll_addr;

        snprintf ( buf, sizeof ( buf ), "%08x:%08x:%08x:%08x:%08x",
                   htonl ( mac->flags__qpn ), htonl ( mac->gid.u.dwords[0] ),
                   htonl ( mac->gid.u.dwords[1] ),
                   htonl ( mac->gid.u.dwords[2] ),
                   htonl ( mac->gid.u.dwords[3] ) );
        return buf;
}

void ipoib_link_state_changed

(

struct ib_device *

ibdev

)

Handle link status change.

Parameters:

ibdev

Infiniband device

Definition at line 696 of file ipoib.c.

References ipoib_device::broadcast, DBGC, EINPROGRESS_JOINING, ib_device::gid, ipoib_mac::gid, ib_gid::half, htons, ib_get_ownerdata(), ib_link_ok(), ib_link_rc(), IB_PKEY_FULL, ipoib_join_broadcast_group(), ipoib_leave_broadcast_group(), net_device::ll_addr, memcpy, netdev, netdev_link_err(), ib_device::pkey, net_device::priv, strerror(), ib_gid::u, and ib_gid::words.

Referenced by ib_link_state_changed(), and ipoib_open().

                                                          {
        struct net_device *netdev = ib_get_ownerdata ( ibdev );
        struct ipoib_device *ipoib = netdev->priv;
        struct ipoib_mac *mac = ( ( struct ipoib_mac * ) netdev->ll_addr );
        int rc;

        /* Leave existing broadcast group */
        ipoib_leave_broadcast_group ( ipoib );

        /* Update MAC address based on potentially-new GID prefix */
        memcpy ( &mac->gid.u.half[0], &ibdev->gid.u.half[0],
                 sizeof ( mac->gid.u.half[0] ) );

        /* Update broadcast GID based on potentially-new partition key */
        ipoib->broadcast.gid.u.words[2] =
                htons ( ibdev->pkey | IB_PKEY_FULL );

        /* Set net device link state to reflect Infiniband link state */
        rc = ib_link_rc ( ibdev );
        netdev_link_err ( netdev, ( rc ? rc : -EINPROGRESS_JOINING ) );

        /* Join new broadcast group */
        if ( ib_link_ok ( ibdev ) &&
             ( ( rc = ipoib_join_broadcast_group ( ipoib ) ) != 0 ) ) {
                DBGC ( ipoib, "IPoIB %p could not rejoin broadcast group: "
                       "%s\n", ipoib, strerror ( rc ) );
                netdev_link_err ( netdev, rc );
                return;
        }
}

int ipoib_probe

(

struct ib_device *

ibdev

)

Probe IPoIB device.

Parameters:

ibdev

Infiniband device

Return values:

rc

Return status code

Definition at line 733 of file ipoib.c.

References alloc_ipoibdev(), ipoib_device::broadcast, ib_device::dev, net_device::dev, ENOMEM, ib_device::gid, ib_gid::half, net_device::hw_addr, ib_set_ownerdata(), ipoib_device::ibdev, net_device::ll_broadcast, memcpy, memset(), ipoib_device::netdev, netdev, netdev_init(), netdev_nullify(), netdev_put(), net_device::priv, register_netdev(), and ib_gid::u.

Referenced by register_ibdev().

                                            {
        struct net_device *netdev;
        struct ipoib_device *ipoib;
        int rc;

        /* Allocate network device */
        netdev = alloc_ipoibdev ( sizeof ( *ipoib ) );
        if ( ! netdev )
                return -ENOMEM;
        netdev_init ( netdev, &ipoib_operations );
        ipoib = netdev->priv;
        ib_set_ownerdata ( ibdev, netdev );
        netdev->dev = ibdev->dev;
        memset ( ipoib, 0, sizeof ( *ipoib ) );
        ipoib->netdev = netdev;
        ipoib->ibdev = ibdev;

        /* Extract hardware address */
        memcpy ( netdev->hw_addr, &ibdev->gid.u.half[1],
                 sizeof ( ibdev->gid.u.half[1] ) );

        /* Set default broadcast address */
        memcpy ( &ipoib->broadcast, &ipoib_broadcast,
                 sizeof ( ipoib->broadcast ) );
        netdev->ll_broadcast = ( ( uint8_t * ) &ipoib->broadcast );

        /* Register network device */
        if ( ( rc = register_netdev ( netdev ) ) != 0 )
                goto err_register_netdev;

        return 0;

 err_register_netdev:
        netdev_nullify ( netdev );
        netdev_put ( netdev );
        return rc;
}

void ipoib_remove

(

struct ib_device *

ibdev

)

Remove IPoIB device.

Parameters:

ibdev

Infiniband device

Definition at line 776 of file ipoib.c.

References ib_get_ownerdata(), netdev, netdev_nullify(), netdev_put(), and unregister_netdev().

Referenced by unregister_ibdev().

                                              {
        struct net_device *netdev = ib_get_ownerdata ( ibdev );

        unregister_netdev ( netdev );
        netdev_nullify ( netdev );
        netdev_put ( netdev );
}

struct net_device* alloc_ipoibdev

(

size_t

priv_size

)

[read]

Allocate IPoIB device.

Parameters:

priv_size

Size of driver private data

Return values:

netdev

Network device, or NULL

Definition at line 384 of file ipoib.c.

References alloc_netdev(), IB_MAX_PAYLOAD_SIZE, net_device::ll_broadcast, net_device::ll_protocol, net_device::max_pkt_len, and netdev.

Referenced by ipoib_probe().

                                                        {
        struct net_device *netdev;

        netdev = alloc_netdev ( priv_size );
        if ( netdev ) {
                netdev->ll_protocol = &ipoib_protocol;
                netdev->ll_broadcast = ( uint8_t * ) &ipoib_broadcast;
                netdev->max_pkt_len = IB_MAX_PAYLOAD_SIZE;
        }
        return netdev;
}