2 * Copyright (c) 2004, 2005 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2004, 2005 Infinicon Corporation. All rights reserved.
4 * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved.
5 * Copyright (c) 2004, 2005 Topspin Corporation. All rights reserved.
6 * Copyright (c) 2004, 2005 Voltaire Corporation. All rights reserved.
7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
9 * This software is available to you under a choice of one of two
10 * licenses. You may choose to be licensed under the terms of the GNU
11 * General Public License (GPL) Version 2, available from the file
12 * COPYING in the main directory of this source tree, or the
13 * OpenIB.org BSD license below:
15 * Redistribution and use in source and binary forms, with or
16 * without modification, are permitted provided that the following
19 * - Redistributions of source code must retain the above
20 * copyright notice, this list of conditions and the following
23 * - Redistributions in binary form must reproduce the above
24 * copyright notice, this list of conditions and the following
25 * disclaimer in the documentation and/or other materials
26 * provided with the distribution.
28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
31 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
32 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
33 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
34 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 * $Id: agent.c 1389 2004-12-27 22:56:47Z roland $
40 #include <linux/slab.h>
41 #include <linux/string.h>
46 #define SPFX "ib_agent: "
48 struct ib_agent_port_private {
49 struct list_head port_list;
50 struct ib_mad_agent *agent[2];
53 static DEFINE_SPINLOCK(ib_agent_port_list_lock);
54 static LIST_HEAD(ib_agent_port_list);
56 static struct ib_agent_port_private *
57 __ib_get_agent_port(struct ib_device *device, int port_num)
59 struct ib_agent_port_private *entry;
61 list_for_each_entry(entry, &ib_agent_port_list, port_list) {
62 if (entry->agent[0]->device == device &&
63 entry->agent[0]->port_num == port_num)
69 static struct ib_agent_port_private *
70 ib_get_agent_port(struct ib_device *device, int port_num)
72 struct ib_agent_port_private *entry;
75 spin_lock_irqsave(&ib_agent_port_list_lock, flags);
76 entry = __ib_get_agent_port(device, port_num);
77 spin_unlock_irqrestore(&ib_agent_port_list_lock, flags);
81 int smi_check_local_dr_smp(struct ib_smp *smp,
82 struct ib_device *device,
85 struct ib_agent_port_private *port_priv;
87 if (smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
90 port_priv = ib_get_agent_port(device, port_num);
92 printk(KERN_DEBUG SPFX "smi_check_local_dr_smp %s port %d "
93 "not open\n", device->name, port_num);
97 return smi_check_local_smp(port_priv->agent[0], smp);
100 int agent_send_response(struct ib_mad *mad, struct ib_grh *grh,
101 struct ib_wc *wc, struct ib_device *device,
102 int port_num, int qpn)
104 struct ib_agent_port_private *port_priv;
105 struct ib_mad_agent *agent;
106 struct ib_mad_send_buf *send_buf;
110 port_priv = ib_get_agent_port(device, port_num);
112 printk(KERN_ERR SPFX "Unable to find port agent\n");
116 agent = port_priv->agent[qpn];
117 ah = ib_create_ah_from_wc(agent->qp->pd, wc, grh, port_num);
120 printk(KERN_ERR SPFX "ib_create_ah_from_wc error:%d\n", ret);
124 send_buf = ib_create_send_mad(agent, wc->src_qp, wc->pkey_index, 0,
125 IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA,
127 if (IS_ERR(send_buf)) {
128 ret = PTR_ERR(send_buf);
129 printk(KERN_ERR SPFX "ib_create_send_mad error:%d\n", ret);
133 memcpy(send_buf->mad, mad, sizeof *mad);
135 if ((ret = ib_post_send_mad(send_buf, NULL))) {
136 printk(KERN_ERR SPFX "ib_post_send_mad error:%d\n", ret);
141 ib_free_send_mad(send_buf);
147 static void agent_send_handler(struct ib_mad_agent *mad_agent,
148 struct ib_mad_send_wc *mad_send_wc)
150 ib_destroy_ah(mad_send_wc->send_buf->ah);
151 ib_free_send_mad(mad_send_wc->send_buf);
154 int ib_agent_port_open(struct ib_device *device, int port_num)
156 struct ib_agent_port_private *port_priv;
160 /* Create new device info */
161 port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL);
163 printk(KERN_ERR SPFX "No memory for ib_agent_port_private\n");
168 /* Obtain send only MAD agent for SMI QP */
169 port_priv->agent[0] = ib_register_mad_agent(device, port_num,
173 if (IS_ERR(port_priv->agent[0])) {
174 ret = PTR_ERR(port_priv->agent[0]);
178 /* Obtain send only MAD agent for GSI QP */
179 port_priv->agent[1] = ib_register_mad_agent(device, port_num,
183 if (IS_ERR(port_priv->agent[1])) {
184 ret = PTR_ERR(port_priv->agent[1]);
188 spin_lock_irqsave(&ib_agent_port_list_lock, flags);
189 list_add_tail(&port_priv->port_list, &ib_agent_port_list);
190 spin_unlock_irqrestore(&ib_agent_port_list_lock, flags);
195 ib_unregister_mad_agent(port_priv->agent[0]);
202 int ib_agent_port_close(struct ib_device *device, int port_num)
204 struct ib_agent_port_private *port_priv;
207 spin_lock_irqsave(&ib_agent_port_list_lock, flags);
208 port_priv = __ib_get_agent_port(device, port_num);
209 if (port_priv == NULL) {
210 spin_unlock_irqrestore(&ib_agent_port_list_lock, flags);
211 printk(KERN_ERR SPFX "Port %d not found\n", port_num);
214 list_del(&port_priv->port_list);
215 spin_unlock_irqrestore(&ib_agent_port_list_lock, flags);
217 ib_unregister_mad_agent(port_priv->agent[1]);
218 ib_unregister_mad_agent(port_priv->agent[0]);