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Diffstat (limited to 'gpxe/src/net/infiniband/ib_sma.c')
-rw-r--r--gpxe/src/net/infiniband/ib_sma.c369
1 files changed, 369 insertions, 0 deletions
diff --git a/gpxe/src/net/infiniband/ib_sma.c b/gpxe/src/net/infiniband/ib_sma.c
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+++ b/gpxe/src/net/infiniband/ib_sma.c
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+/*
+ * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <byteswap.h>
+#include <gpxe/settings.h>
+#include <gpxe/infiniband.h>
+#include <gpxe/iobuf.h>
+#include <gpxe/ib_mi.h>
+#include <gpxe/ib_sma.h>
+
+/**
+ * @file
+ *
+ * Infiniband Subnet Management Agent
+ *
+ */
+
+/**
+ * Node information
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ * @v mad Received MAD
+ * @v av Source address vector
+ */
+static void ib_sma_node_info ( struct ib_device *ibdev,
+ struct ib_mad_interface *mi,
+ union ib_mad *mad,
+ struct ib_address_vector *av ) {
+ struct ib_node_info *node_info = &mad->smp.smp_data.node_info;
+ int rc;
+
+ /* Fill in information */
+ memset ( node_info, 0, sizeof ( *node_info ) );
+ node_info->base_version = IB_MGMT_BASE_VERSION;
+ node_info->class_version = IB_SMP_CLASS_VERSION;
+ node_info->node_type = IB_NODE_TYPE_HCA;
+ node_info->num_ports = ib_get_hca_info ( ibdev, &node_info->sys_guid );
+ memcpy ( &node_info->node_guid, &node_info->sys_guid,
+ sizeof ( node_info->node_guid ) );
+ memcpy ( &node_info->port_guid, &ibdev->gid.u.half[1],
+ sizeof ( node_info->port_guid ) );
+ node_info->partition_cap = htons ( 1 );
+ node_info->local_port_num = ibdev->port;
+
+ /* Send GetResponse */
+ mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
+ if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
+ DBGC ( mi, "SMA %p could not send NodeInfo GetResponse: %s\n",
+ mi, strerror ( rc ) );
+ return;
+ }
+}
+
+/**
+ * Node description
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ * @v mad Received MAD
+ * @v av Source address vector
+ */
+static void ib_sma_node_desc ( struct ib_device *ibdev,
+ struct ib_mad_interface *mi,
+ union ib_mad *mad,
+ struct ib_address_vector *av ) {
+ struct ib_node_desc *node_desc = &mad->smp.smp_data.node_desc;
+ struct ib_gid_half guid;
+ char hostname[ sizeof ( node_desc->node_string ) ];
+ int hostname_len;
+ int rc;
+
+ /* Fill in information */
+ memset ( node_desc, 0, sizeof ( *node_desc ) );
+ ib_get_hca_info ( ibdev, &guid );
+ hostname_len = fetch_string_setting ( NULL, &hostname_setting,
+ hostname, sizeof ( hostname ) );
+ snprintf ( node_desc->node_string, sizeof ( node_desc->node_string ),
+ "gPXE %s%s%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x (%s)",
+ hostname, ( ( hostname_len >= 0 ) ? " " : "" ),
+ guid.u.bytes[0], guid.u.bytes[1], guid.u.bytes[2],
+ guid.u.bytes[3], guid.u.bytes[4], guid.u.bytes[5],
+ guid.u.bytes[6], guid.u.bytes[7], ibdev->dev->name );
+
+ /* Send GetResponse */
+ mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
+ if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
+ DBGC ( mi, "SMA %p could not send NodeDesc GetResponse: %s\n",
+ mi, strerror ( rc ) );
+ return;
+ }
+}
+
+/**
+ * GUID information
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ * @v mad Received MAD
+ * @v av Source address vector
+ */
+static void ib_sma_guid_info ( struct ib_device *ibdev,
+ struct ib_mad_interface *mi,
+ union ib_mad *mad,
+ struct ib_address_vector *av ) {
+ struct ib_guid_info *guid_info = &mad->smp.smp_data.guid_info;
+ int rc;
+
+ /* Fill in information */
+ memset ( guid_info, 0, sizeof ( *guid_info ) );
+ memcpy ( guid_info->guid[0], &ibdev->gid.u.half[1],
+ sizeof ( guid_info->guid[0] ) );
+
+ /* Send GetResponse */
+ mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
+ if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
+ DBGC ( mi, "SMA %p could not send GuidInfo GetResponse: %s\n",
+ mi, strerror ( rc ) );
+ return;
+ }
+}
+
+/**
+ * Set port information
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ * @v mad Received MAD
+ * @ret rc Return status code
+ */
+static int ib_sma_set_port_info ( struct ib_device *ibdev,
+ struct ib_mad_interface *mi,
+ union ib_mad *mad ) {
+ const struct ib_port_info *port_info = &mad->smp.smp_data.port_info;
+ unsigned int link_width_enabled;
+ unsigned int link_speed_enabled;
+ int rc;
+
+ /* Set parameters */
+ 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 );
+ if ( ( link_width_enabled = port_info->link_width_enabled ) )
+ ibdev->link_width_enabled = link_width_enabled;
+ if ( ( link_speed_enabled =
+ ( port_info->link_speed_active__link_speed_enabled & 0xf ) ) )
+ ibdev->link_speed_enabled = link_speed_enabled;
+ ibdev->sm_sl = ( port_info->neighbour_mtu__mastersm_sl & 0xf );
+ DBGC ( mi, "SMA %p set LID %04x SMLID %04x link width %02x speed "
+ "%02x\n", mi, ibdev->lid, ibdev->sm_lid,
+ ibdev->link_width_enabled, ibdev->link_speed_enabled );
+
+ /* Update parameters on device */
+ if ( ( rc = ib_set_port_info ( ibdev, mad ) ) != 0 ) {
+ DBGC ( mi, "SMA %p could not set port information: %s\n",
+ mi, strerror ( rc ) );
+ return rc;
+ }
+
+ return 0;
+}
+
+/**
+ * Port information
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ * @v mad Received MAD
+ * @v av Source address vector
+ */
+static void ib_sma_port_info ( struct ib_device *ibdev,
+ struct ib_mad_interface *mi,
+ union ib_mad *mad,
+ struct ib_address_vector *av ) {
+ struct ib_port_info *port_info = &mad->smp.smp_data.port_info;
+ int rc;
+
+ /* Set parameters if applicable */
+ if ( mad->hdr.method == IB_MGMT_METHOD_SET ) {
+ if ( ( rc = ib_sma_set_port_info ( ibdev, mi, mad ) ) != 0 ) {
+ mad->hdr.status =
+ htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR );
+ /* Fall through to generate GetResponse */
+ }
+ }
+
+ /* Fill in information */
+ memset ( port_info, 0, sizeof ( *port_info ) );
+ memcpy ( port_info->gid_prefix, &ibdev->gid.u.half[0],
+ sizeof ( port_info->gid_prefix ) );
+ port_info->lid = ntohs ( ibdev->lid );
+ port_info->mastersm_lid = ntohs ( ibdev->sm_lid );
+ port_info->local_port_num = ibdev->port;
+ port_info->link_width_enabled = ibdev->link_width_enabled;
+ port_info->link_width_supported = ibdev->link_width_supported;
+ port_info->link_width_active = ibdev->link_width_active;
+ port_info->link_speed_supported__port_state =
+ ( ( ibdev->link_speed_supported << 4 ) | ibdev->port_state );
+ port_info->port_phys_state__link_down_def_state =
+ ( ( IB_PORT_PHYS_STATE_POLLING << 4 ) |
+ IB_PORT_PHYS_STATE_POLLING );
+ port_info->link_speed_active__link_speed_enabled =
+ ( ( ibdev->link_speed_active << 4 ) |
+ ibdev->link_speed_enabled );
+ port_info->neighbour_mtu__mastersm_sl =
+ ( ( IB_MTU_2048 << 4 ) | ibdev->sm_sl );
+ port_info->vl_cap__init_type = ( IB_VL_0 << 4 );
+ port_info->init_type_reply__mtu_cap = IB_MTU_2048;
+ port_info->operational_vls__enforcement = ( IB_VL_0 << 4 );
+ port_info->guid_cap = 1;
+
+ /* Send GetResponse */
+ mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
+ if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
+ DBGC ( mi, "SMA %p could not send PortInfo GetResponse: %s\n",
+ mi, strerror ( rc ) );
+ return;
+ }
+}
+
+/**
+ * Set partition key table
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ * @v mad Received MAD
+ * @ret rc Return status code
+ */
+static int ib_sma_set_pkey_table ( struct ib_device *ibdev,
+ struct ib_mad_interface *mi,
+ union ib_mad *mad ) {
+ struct ib_pkey_table *pkey_table = &mad->smp.smp_data.pkey_table;
+ int rc;
+
+ /* Set parameters */
+ ibdev->pkey = ntohs ( pkey_table->pkey[0] );
+ DBGC ( mi, "SMA %p set pkey %04x\n", mi, ibdev->pkey );
+
+ /* Update parameters on device */
+ if ( ( rc = ib_set_pkey_table ( ibdev, mad ) ) != 0 ) {
+ DBGC ( mi, "SMA %p could not set pkey table: %s\n",
+ mi, strerror ( rc ) );
+ return rc;
+ }
+
+ return 0;
+}
+
+/**
+ * Partition key table
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ * @v mad Received MAD
+ * @v av Source address vector
+ */
+static void ib_sma_pkey_table ( struct ib_device *ibdev,
+ struct ib_mad_interface *mi,
+ union ib_mad *mad,
+ struct ib_address_vector *av ) {
+ struct ib_pkey_table *pkey_table = &mad->smp.smp_data.pkey_table;
+ int rc;
+
+ /* Set parameters, if applicable */
+ if ( mad->hdr.method == IB_MGMT_METHOD_SET ) {
+ if ( ( rc = ib_sma_set_pkey_table ( ibdev, mi, mad ) ) != 0 ) {
+ mad->hdr.status =
+ htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR );
+ /* Fall through to generate GetResponse */
+ }
+ }
+
+ /* Fill in information */
+ mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
+ memset ( pkey_table, 0, sizeof ( *pkey_table ) );
+ pkey_table->pkey[0] = htons ( ibdev->pkey );
+
+ /* Send GetResponse */
+ mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
+ if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
+ DBGC ( mi, "SMA %p could not send PKeyTable GetResponse: %s\n",
+ mi, strerror ( rc ) );
+ return;
+ }
+}
+
+/** Subnet management agent */
+struct ib_mad_agent ib_sma_agent[] __ib_mad_agent = {
+ {
+ .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
+ .class_version = IB_SMP_CLASS_VERSION,
+ .attr_id = htons ( IB_SMP_ATTR_NODE_INFO ),
+ .handle = ib_sma_node_info,
+ },
+ {
+ .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
+ .class_version = IB_SMP_CLASS_VERSION,
+ .attr_id = htons ( IB_SMP_ATTR_NODE_DESC ),
+ .handle = ib_sma_node_desc,
+ },
+ {
+ .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
+ .class_version = IB_SMP_CLASS_VERSION,
+ .attr_id = htons ( IB_SMP_ATTR_GUID_INFO ),
+ .handle = ib_sma_guid_info,
+ },
+ {
+ .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
+ .class_version = IB_SMP_CLASS_VERSION,
+ .attr_id = htons ( IB_SMP_ATTR_PORT_INFO ),
+ .handle = ib_sma_port_info,
+ },
+ {
+ .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
+ .class_version = IB_SMP_CLASS_VERSION,
+ .attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE ),
+ .handle = ib_sma_pkey_table,
+ },
+};
+
+/**
+ * Create subnet management agent and interface
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ * @ret rc Return status code
+ */
+int ib_create_sma ( struct ib_device *ibdev, struct ib_mad_interface *mi ) {
+
+ /* Nothing to do */
+ DBGC ( ibdev, "IBDEV %p SMA using SMI %p\n", ibdev, mi );
+
+ return 0;
+}
+
+/**
+ * Destroy subnet management agent and interface
+ *
+ * @v ibdev Infiniband device
+ * @v mi Management interface
+ */
+void ib_destroy_sma ( struct ib_device *ibdev __unused,
+ struct ib_mad_interface *mi __unused ) {
+ /* Nothing to do */
+}