ib_smc.c File Reference

Infiniband Subnet Management Client. More...

#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <byteswap.h>
#include <gpxe/infiniband.h>
#include <gpxe/ib_smc.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static int	ib_smc_get_port_info (struct ib_device *ibdev, ib_local_mad_t local_mad, union ib_mad *mad)
	Get port information.
static int	ib_smc_get_guid_info (struct ib_device *ibdev, ib_local_mad_t local_mad, union ib_mad *mad)
	Get GUID information.
static int	ib_smc_get_pkey_table (struct ib_device *ibdev, ib_local_mad_t local_mad, union ib_mad *mad)
	Get partition key table.
int	ib_smc_update (struct ib_device *ibdev, ib_local_mad_t local_mad)
	Get MAD parameters.

---

Detailed Description

Infiniband Subnet Management Client.

Definition in file ib_smc.c.

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

static int ib_smc_get_port_info	(	struct ib_device *	ibdev,
		ib_local_mad_t	local_mad,
		union ib_mad *	mad
	)			[static]

Get port information.

Parameters:

	ibdev	Infiniband device
	local_mad	Method for issuing local MADs
	mad	Management datagram to fill in

Return values:

rc

Return status code

Definition at line 45 of file ib_smc.c.

References ib_mad_hdr::attr_id, ib_mad_hdr::attr_mod, ib_mad_hdr::base_version, ib_mad_hdr::class_version, DBGC, ib_mad::hdr, htonl, htons, IB_MGMT_BASE_VERSION, IB_MGMT_CLASS_SUBN_LID_ROUTED, IB_MGMT_METHOD_GET, IB_SMP_ATTR_PORT_INFO, memset(), ib_mad_hdr::method, ib_mad_hdr::mgmt_class, ib_device::port, and strerror().

Referenced by ib_smc_update().

                                                      {
        int rc;

        /* Construct MAD */
        memset ( mad, 0, sizeof ( *mad ) );
        mad->hdr.base_version = IB_MGMT_BASE_VERSION;
        mad->hdr.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
        mad->hdr.class_version = 1;
        mad->hdr.method = IB_MGMT_METHOD_GET;
        mad->hdr.attr_id = htons ( IB_SMP_ATTR_PORT_INFO );
        mad->hdr.attr_mod = htonl ( ibdev->port );

        if ( ( rc = local_mad ( ibdev, mad ) ) != 0 ) {
                DBGC ( ibdev, "IBDEV %p could not get port info: %s\n",
                       ibdev, strerror ( rc ) );
                return rc;
        }
        return 0;
}

static int ib_smc_get_guid_info	(	struct ib_device *	ibdev,
		ib_local_mad_t	local_mad,
		union ib_mad *	mad
	)			[static]

Get GUID information.

Parameters:

	ibdev	Infiniband device
	local_mad	Method for issuing local MADs
	mad	Management datagram to fill in

Return values:

rc

Return status code

Definition at line 75 of file ib_smc.c.

References ib_mad_hdr::attr_id, ib_mad_hdr::base_version, ib_mad_hdr::class_version, DBGC, ib_mad::hdr, htons, IB_MGMT_BASE_VERSION, IB_MGMT_CLASS_SUBN_LID_ROUTED, IB_MGMT_METHOD_GET, IB_SMP_ATTR_GUID_INFO, memset(), ib_mad_hdr::method, ib_mad_hdr::mgmt_class, and strerror().

Referenced by ib_smc_update().

                                                      {
        int rc;

        /* Construct MAD */
        memset ( mad, 0, sizeof ( *mad ) );
        mad->hdr.base_version = IB_MGMT_BASE_VERSION;
        mad->hdr.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
        mad->hdr.class_version = 1;
        mad->hdr.method = IB_MGMT_METHOD_GET;
        mad->hdr.attr_id = htons ( IB_SMP_ATTR_GUID_INFO );

        if ( ( rc = local_mad ( ibdev, mad ) ) != 0 ) {
                DBGC ( ibdev, "IBDEV %p could not get GUID info: %s\n",
                       ibdev, strerror ( rc ) );
                return rc;
        }
        return 0;
}

static int ib_smc_get_pkey_table	(	struct ib_device *	ibdev,
		ib_local_mad_t	local_mad,
		union ib_mad *	mad
	)			[static]

Get partition key table.

Parameters:

	ibdev	Infiniband device
	local_mad	Method for issuing local MADs
	mad	Management datagram to fill in

Return values:

rc

Return status code

Definition at line 104 of file ib_smc.c.

References ib_mad_hdr::attr_id, ib_mad_hdr::base_version, ib_mad_hdr::class_version, DBGC, ib_mad::hdr, htons, IB_MGMT_BASE_VERSION, IB_MGMT_CLASS_SUBN_LID_ROUTED, IB_MGMT_METHOD_GET, IB_SMP_ATTR_PKEY_TABLE, memset(), ib_mad_hdr::method, ib_mad_hdr::mgmt_class, and strerror().

Referenced by ib_smc_update().

                                                       {
        int rc;

        /* Construct MAD */
        memset ( mad, 0, sizeof ( *mad ) );
        mad->hdr.base_version = IB_MGMT_BASE_VERSION;
        mad->hdr.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
        mad->hdr.class_version = 1;
        mad->hdr.method = IB_MGMT_METHOD_GET;
        mad->hdr.attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE );

        if ( ( rc = local_mad ( ibdev, mad ) ) != 0 ) {
                DBGC ( ibdev, "IBDEV %p could not get pkey table: %s\n",
                       ibdev, strerror ( rc ) );
                return rc;
        }
        return 0;
}

int ib_smc_update	(	struct ib_device *	ibdev,
		ib_local_mad_t	local_mad
	)

Get MAD parameters.

Parameters:

	ibdev	Infiniband device
	local_mad	Method for issuing local MADs

Return values:

rc

Return status code

Definition at line 132 of file ib_smc.c.

References DBGC, ib_gid::dwords, ib_device::gid, ib_port_info::gid_prefix, ib_guid_info::guid, ib_smp_data::guid_info, ib_gid::half, htonl, ib_smc_get_guid_info(), ib_smc_get_pkey_table(), ib_smc_get_port_info(), ib_port_info::lid, ib_device::lid, ib_device::link_speed_active, ib_port_info::link_speed_active__link_speed_enabled, ib_device::link_speed_enabled, ib_device::link_speed_supported, ib_port_info::link_speed_supported__port_state, ib_port_info::link_width_active, ib_device::link_width_active, ib_port_info::link_width_enabled, ib_device::link_width_enabled, ib_port_info::link_width_supported, ib_device::link_width_supported, ib_port_info::mastersm_lid, memcpy, ib_port_info::neighbour_mtu__mastersm_sl, ntohs, ib_pkey_table::pkey, ib_device::pkey, ib_smp_data::pkey_table, ib_smp_data::port_info, ib_device::port_state, ib_device::sm_lid, ib_device::sm_sl, ib_mad::smp, ib_mad_smp::smp_data, and ib_gid::u.

Referenced by arbel_event_port_state_change(), arbel_open(), arbel_probe(), hermon_event_port_state_change(), hermon_inform_sma(), hermon_open(), and hermon_probe().

                                                                        {
        union ib_mad mad;
        struct ib_port_info *port_info = &mad.smp.smp_data.port_info;
        struct ib_guid_info *guid_info = &mad.smp.smp_data.guid_info;
        struct ib_pkey_table *pkey_table = &mad.smp.smp_data.pkey_table;
        int rc;

        /* Port info gives us the link state, the first half of the
         * port GID and the SM LID.
         */
        if ( ( rc = ib_smc_get_port_info ( ibdev, local_mad, &mad ) ) != 0 )
                return rc;
        memcpy ( &ibdev->gid.u.half[0], port_info->gid_prefix,
                 sizeof ( ibdev->gid.u.half[0] ) );
        ibdev->lid = ntohs ( port_info->lid );
        ibdev->sm_lid = ntohs ( port_info->mastersm_lid );
        ibdev->link_width_enabled = port_info->link_width_enabled;
        ibdev->link_width_supported = port_info->link_width_supported;
        ibdev->link_width_active = port_info->link_width_active;
        ibdev->link_speed_supported =
                ( port_info->link_speed_supported__port_state >> 4 );
        ibdev->port_state =
                ( port_info->link_speed_supported__port_state & 0xf );
        ibdev->link_speed_active =
                ( port_info->link_speed_active__link_speed_enabled >> 4 );
        ibdev->link_speed_enabled =
                ( port_info->link_speed_active__link_speed_enabled & 0xf );
        ibdev->sm_sl = ( port_info->neighbour_mtu__mastersm_sl & 0xf );

        /* GUID info gives us the second half of the port GID */
        if ( ( rc = ib_smc_get_guid_info ( ibdev, local_mad, &mad ) ) != 0 )
                return rc;
        memcpy ( &ibdev->gid.u.half[1], guid_info->guid[0],
                 sizeof ( ibdev->gid.u.half[1] ) );

        /* Get partition key */
        if ( ( rc = ib_smc_get_pkey_table ( ibdev, local_mad, &mad ) ) != 0 )
                return rc;
        ibdev->pkey = ntohs ( pkey_table->pkey[0] );

        DBGC ( ibdev, "IBDEV %p port GID is %08x:%08x:%08x:%08x\n", ibdev,
               htonl ( ibdev->gid.u.dwords[0] ),
               htonl ( ibdev->gid.u.dwords[1] ),
               htonl ( ibdev->gid.u.dwords[2] ),
               htonl ( ibdev->gid.u.dwords[3] ) );

        return 0;
}