source: grub-pc/trunk/fuentes/debian/grub-extras/disabled/gpxe/src/net/infiniband/ib_smc.c @ 22

Last change on this file since 22 was 22, checked in by mabarracus, 4 years ago

updated version and apply net.ifnames=0 into debian/rules

File size: 5.3 KB
Line 
1/*
2 * Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19FILE_LICENCE ( GPL2_OR_LATER );
20
21#include <stdint.h>
22#include <stdlib.h>
23#include <string.h>
24#include <errno.h>
25#include <unistd.h>
26#include <byteswap.h>
27#include <gpxe/infiniband.h>
28#include <gpxe/ib_smc.h>
29
30/**
31 * @file
32 *
33 * Infiniband Subnet Management Client
34 *
35 */
36
37/**
38 * Get port information
39 *
40 * @v ibdev             Infiniband device
41 * @v local_mad         Method for issuing local MADs
42 * @v mad               Management datagram to fill in
43 * @ret rc              Return status code
44 */
45static int ib_smc_get_port_info ( struct ib_device *ibdev,
46                                  ib_local_mad_t local_mad,
47                                  union ib_mad *mad ) {
48        int rc;
49
50        /* Construct MAD */
51        memset ( mad, 0, sizeof ( *mad ) );
52        mad->hdr.base_version = IB_MGMT_BASE_VERSION;
53        mad->hdr.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
54        mad->hdr.class_version = 1;
55        mad->hdr.method = IB_MGMT_METHOD_GET;
56        mad->hdr.attr_id = htons ( IB_SMP_ATTR_PORT_INFO );
57        mad->hdr.attr_mod = htonl ( ibdev->port );
58
59        if ( ( rc = local_mad ( ibdev, mad ) ) != 0 ) {
60                DBGC ( ibdev, "IBDEV %p could not get port info: %s\n",
61                       ibdev, strerror ( rc ) );
62                return rc;
63        }
64        return 0;
65}
66
67/**
68 * Get GUID information
69 *
70 * @v ibdev             Infiniband device
71 * @v local_mad         Method for issuing local MADs
72 * @v mad               Management datagram to fill in
73 * @ret rc              Return status code
74 */
75static int ib_smc_get_guid_info ( struct ib_device *ibdev,
76                                  ib_local_mad_t local_mad,
77                                  union ib_mad *mad ) {
78        int rc;
79
80        /* Construct MAD */
81        memset ( mad, 0, sizeof ( *mad ) );
82        mad->hdr.base_version = IB_MGMT_BASE_VERSION;
83        mad->hdr.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
84        mad->hdr.class_version = 1;
85        mad->hdr.method = IB_MGMT_METHOD_GET;
86        mad->hdr.attr_id = htons ( IB_SMP_ATTR_GUID_INFO );
87
88        if ( ( rc = local_mad ( ibdev, mad ) ) != 0 ) {
89                DBGC ( ibdev, "IBDEV %p could not get GUID info: %s\n",
90                       ibdev, strerror ( rc ) );
91                return rc;
92        }
93        return 0;
94}
95
96/**
97 * Get partition key table
98 *
99 * @v ibdev             Infiniband device
100 * @v local_mad         Method for issuing local MADs
101 * @v mad               Management datagram to fill in
102 * @ret rc              Return status code
103 */
104static int ib_smc_get_pkey_table ( struct ib_device *ibdev,
105                                   ib_local_mad_t local_mad,
106                                   union ib_mad *mad ) {
107        int rc;
108
109        /* Construct MAD */
110        memset ( mad, 0, sizeof ( *mad ) );
111        mad->hdr.base_version = IB_MGMT_BASE_VERSION;
112        mad->hdr.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
113        mad->hdr.class_version = 1;
114        mad->hdr.method = IB_MGMT_METHOD_GET;
115        mad->hdr.attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE );
116
117        if ( ( rc = local_mad ( ibdev, mad ) ) != 0 ) {
118                DBGC ( ibdev, "IBDEV %p could not get pkey table: %s\n",
119                       ibdev, strerror ( rc ) );
120                return rc;
121        }
122        return 0;
123}
124
125/**
126 * Get MAD parameters
127 *
128 * @v ibdev             Infiniband device
129 * @v local_mad         Method for issuing local MADs
130 * @ret rc              Return status code
131 */
132int ib_smc_update ( struct ib_device *ibdev, ib_local_mad_t local_mad ) {
133        union ib_mad mad;
134        struct ib_port_info *port_info = &mad.smp.smp_data.port_info;
135        struct ib_guid_info *guid_info = &mad.smp.smp_data.guid_info;
136        struct ib_pkey_table *pkey_table = &mad.smp.smp_data.pkey_table;
137        int rc;
138
139        /* Port info gives us the link state, the first half of the
140         * port GID and the SM LID.
141         */
142        if ( ( rc = ib_smc_get_port_info ( ibdev, local_mad, &mad ) ) != 0 )
143                return rc;
144        memcpy ( &ibdev->gid.u.half[0], port_info->gid_prefix,
145                 sizeof ( ibdev->gid.u.half[0] ) );
146        ibdev->lid = ntohs ( port_info->lid );
147        ibdev->sm_lid = ntohs ( port_info->mastersm_lid );
148        ibdev->link_width_enabled = port_info->link_width_enabled;
149        ibdev->link_width_supported = port_info->link_width_supported;
150        ibdev->link_width_active = port_info->link_width_active;
151        ibdev->link_speed_supported =
152                ( port_info->link_speed_supported__port_state >> 4 );
153        ibdev->port_state =
154                ( port_info->link_speed_supported__port_state & 0xf );
155        ibdev->link_speed_active =
156                ( port_info->link_speed_active__link_speed_enabled >> 4 );
157        ibdev->link_speed_enabled =
158                ( port_info->link_speed_active__link_speed_enabled & 0xf );
159        ibdev->sm_sl = ( port_info->neighbour_mtu__mastersm_sl & 0xf );
160
161        /* GUID info gives us the second half of the port GID */
162        if ( ( rc = ib_smc_get_guid_info ( ibdev, local_mad, &mad ) ) != 0 )
163                return rc;
164        memcpy ( &ibdev->gid.u.half[1], guid_info->guid[0],
165                 sizeof ( ibdev->gid.u.half[1] ) );
166
167        /* Get partition key */
168        if ( ( rc = ib_smc_get_pkey_table ( ibdev, local_mad, &mad ) ) != 0 )
169                return rc;
170        ibdev->pkey = ntohs ( pkey_table->pkey[0] );
171
172        DBGC ( ibdev, "IBDEV %p port GID is %08x:%08x:%08x:%08x\n", ibdev,
173               htonl ( ibdev->gid.u.dwords[0] ),
174               htonl ( ibdev->gid.u.dwords[1] ),
175               htonl ( ibdev->gid.u.dwords[2] ),
176               htonl ( ibdev->gid.u.dwords[3] ) );
177
178        return 0;
179}
Note: See TracBrowser for help on using the repository browser.