11da177e4SLinus Torvalds /*
21da177e4SLinus Torvalds * Copyright (c) 2004 Topspin Communications. All rights reserved.
32a1d9b7fSRoland Dreier * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
42a1d9b7fSRoland Dreier * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
51da177e4SLinus Torvalds *
61da177e4SLinus Torvalds * This software is available to you under a choice of one of two
71da177e4SLinus Torvalds * licenses. You may choose to be licensed under the terms of the GNU
81da177e4SLinus Torvalds * General Public License (GPL) Version 2, available from the file
91da177e4SLinus Torvalds * COPYING in the main directory of this source tree, or the
101da177e4SLinus Torvalds * OpenIB.org BSD license below:
111da177e4SLinus Torvalds *
121da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or
131da177e4SLinus Torvalds * without modification, are permitted provided that the following
141da177e4SLinus Torvalds * conditions are met:
151da177e4SLinus Torvalds *
161da177e4SLinus Torvalds * - Redistributions of source code must retain the above
171da177e4SLinus Torvalds * copyright notice, this list of conditions and the following
181da177e4SLinus Torvalds * disclaimer.
191da177e4SLinus Torvalds *
201da177e4SLinus Torvalds * - Redistributions in binary form must reproduce the above
211da177e4SLinus Torvalds * copyright notice, this list of conditions and the following
221da177e4SLinus Torvalds * disclaimer in the documentation and/or other materials
231da177e4SLinus Torvalds * provided with the distribution.
241da177e4SLinus Torvalds *
251da177e4SLinus Torvalds * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
261da177e4SLinus Torvalds * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
271da177e4SLinus Torvalds * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
281da177e4SLinus Torvalds * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
291da177e4SLinus Torvalds * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
301da177e4SLinus Torvalds * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
311da177e4SLinus Torvalds * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
321da177e4SLinus Torvalds * SOFTWARE.
331da177e4SLinus Torvalds */
341da177e4SLinus Torvalds
354e57b681STim Schmielau #include <linux/string.h>
364e57b681STim Schmielau #include <linux/slab.h>
374e57b681STim Schmielau
38a4d61e84SRoland Dreier #include <rdma/ib_verbs.h>
39a4d61e84SRoland Dreier #include <rdma/ib_mad.h>
40a4d61e84SRoland Dreier #include <rdma/ib_smi.h>
411da177e4SLinus Torvalds
421da177e4SLinus Torvalds #include "mthca_dev.h"
431da177e4SLinus Torvalds #include "mthca_cmd.h"
441da177e4SLinus Torvalds
451da177e4SLinus Torvalds enum {
461da177e4SLinus Torvalds MTHCA_VENDOR_CLASS1 = 0x9,
471da177e4SLinus Torvalds MTHCA_VENDOR_CLASS2 = 0xa
481da177e4SLinus Torvalds };
491da177e4SLinus Torvalds
mthca_update_rate(struct mthca_dev * dev,u8 port_num)50415dcd95SAdrian Bunk static int mthca_update_rate(struct mthca_dev *dev, u8 port_num)
51bf6a9e31SJack Morgenstein {
52bf6a9e31SJack Morgenstein struct ib_port_attr *tprops = NULL;
53bf6a9e31SJack Morgenstein int ret;
54bf6a9e31SJack Morgenstein
55bf6a9e31SJack Morgenstein tprops = kmalloc(sizeof *tprops, GFP_KERNEL);
56bf6a9e31SJack Morgenstein if (!tprops)
57bf6a9e31SJack Morgenstein return -ENOMEM;
58bf6a9e31SJack Morgenstein
59bf6a9e31SJack Morgenstein ret = ib_query_port(&dev->ib_dev, port_num, tprops);
60bf6a9e31SJack Morgenstein if (ret) {
615a738b5dSJason Gunthorpe dev_warn(&dev->ib_dev.dev,
625a738b5dSJason Gunthorpe "ib_query_port failed (%d) forport %d\n", ret,
635a738b5dSJason Gunthorpe port_num);
64bf6a9e31SJack Morgenstein goto out;
65bf6a9e31SJack Morgenstein }
66bf6a9e31SJack Morgenstein
67bf6a9e31SJack Morgenstein dev->rate[port_num - 1] = tprops->active_speed *
68bf6a9e31SJack Morgenstein ib_width_enum_to_int(tprops->active_width);
69bf6a9e31SJack Morgenstein
70bf6a9e31SJack Morgenstein out:
71bf6a9e31SJack Morgenstein kfree(tprops);
72bf6a9e31SJack Morgenstein return ret;
73bf6a9e31SJack Morgenstein }
74bf6a9e31SJack Morgenstein
update_sm_ah(struct mthca_dev * dev,u8 port_num,u16 lid,u8 sl)751da177e4SLinus Torvalds static void update_sm_ah(struct mthca_dev *dev,
761da177e4SLinus Torvalds u8 port_num, u16 lid, u8 sl)
771da177e4SLinus Torvalds {
781da177e4SLinus Torvalds struct ib_ah *new_ah;
7990898850SDasaratharaman Chandramouli struct rdma_ah_attr ah_attr;
801da177e4SLinus Torvalds unsigned long flags;
811da177e4SLinus Torvalds
821da177e4SLinus Torvalds if (!dev->send_agent[port_num - 1][0])
831da177e4SLinus Torvalds return;
841da177e4SLinus Torvalds
851da177e4SLinus Torvalds memset(&ah_attr, 0, sizeof ah_attr);
8644c58487SDasaratharaman Chandramouli ah_attr.type = rdma_ah_find_type(&dev->ib_dev, port_num);
87d8966fcdSDasaratharaman Chandramouli rdma_ah_set_dlid(&ah_attr, lid);
88d8966fcdSDasaratharaman Chandramouli rdma_ah_set_sl(&ah_attr, sl);
89d8966fcdSDasaratharaman Chandramouli rdma_ah_set_port_num(&ah_attr, port_num);
901da177e4SLinus Torvalds
910a18cfe4SDasaratharaman Chandramouli new_ah = rdma_create_ah(dev->send_agent[port_num - 1][0]->qp->pd,
92b090c4e3SGal Pressman &ah_attr, 0);
931da177e4SLinus Torvalds if (IS_ERR(new_ah))
941da177e4SLinus Torvalds return;
951da177e4SLinus Torvalds
961da177e4SLinus Torvalds spin_lock_irqsave(&dev->sm_lock, flags);
971da177e4SLinus Torvalds if (dev->sm_ah[port_num - 1])
982553ba21SGal Pressman rdma_destroy_ah(dev->sm_ah[port_num - 1], 0);
991da177e4SLinus Torvalds dev->sm_ah[port_num - 1] = new_ah;
1001da177e4SLinus Torvalds spin_unlock_irqrestore(&dev->sm_lock, flags);
1011da177e4SLinus Torvalds }
1021da177e4SLinus Torvalds
1031da177e4SLinus Torvalds /*
1041da177e4SLinus Torvalds * Snoop SM MADs for port info and P_Key table sets, so we can
1051da177e4SLinus Torvalds * synthesize LID change and P_Key change events.
1061da177e4SLinus Torvalds */
smp_snoop(struct ib_device * ibdev,u8 port_num,const struct ib_mad * mad,u16 prev_lid)1071da177e4SLinus Torvalds static void smp_snoop(struct ib_device *ibdev,
1081da177e4SLinus Torvalds u8 port_num,
109a97e2d86SIra Weiny const struct ib_mad *mad,
110270b8b85SMoni Shoua u16 prev_lid)
1111da177e4SLinus Torvalds {
1121da177e4SLinus Torvalds struct ib_event event;
1131da177e4SLinus Torvalds
1141da177e4SLinus Torvalds if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
1151da177e4SLinus Torvalds mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) &&
1161da177e4SLinus Torvalds mad->mad_hdr.method == IB_MGMT_METHOD_SET) {
1171da177e4SLinus Torvalds if (mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO) {
11812bbb2b7SLeonid Arsh struct ib_port_info *pinfo =
11912bbb2b7SLeonid Arsh (struct ib_port_info *) ((struct ib_smp *) mad)->data;
120270b8b85SMoni Shoua u16 lid = be16_to_cpu(pinfo->lid);
12112bbb2b7SLeonid Arsh
122bf6a9e31SJack Morgenstein mthca_update_rate(to_mdev(ibdev), port_num);
1231da177e4SLinus Torvalds update_sm_ah(to_mdev(ibdev), port_num,
124b2707573SJack Morgenstein be16_to_cpu(pinfo->sm_lid),
12512bbb2b7SLeonid Arsh pinfo->neighbormtu_mastersmsl & 0xf);
1261da177e4SLinus Torvalds
1271da177e4SLinus Torvalds event.device = ibdev;
1281da177e4SLinus Torvalds event.element.port_num = port_num;
12912bbb2b7SLeonid Arsh
130270b8b85SMoni Shoua if (pinfo->clientrereg_resv_subnetto & 0x80) {
13112bbb2b7SLeonid Arsh event.event = IB_EVENT_CLIENT_REREGISTER;
1321da177e4SLinus Torvalds ib_dispatch_event(&event);
1331da177e4SLinus Torvalds }
1341da177e4SLinus Torvalds
135270b8b85SMoni Shoua if (prev_lid != lid) {
136270b8b85SMoni Shoua event.event = IB_EVENT_LID_CHANGE;
137270b8b85SMoni Shoua ib_dispatch_event(&event);
138270b8b85SMoni Shoua }
139270b8b85SMoni Shoua }
140270b8b85SMoni Shoua
1411da177e4SLinus Torvalds if (mad->mad_hdr.attr_id == IB_SMP_ATTR_PKEY_TABLE) {
1421da177e4SLinus Torvalds event.device = ibdev;
1431da177e4SLinus Torvalds event.event = IB_EVENT_PKEY_CHANGE;
1441da177e4SLinus Torvalds event.element.port_num = port_num;
1451da177e4SLinus Torvalds ib_dispatch_event(&event);
1461da177e4SLinus Torvalds }
1471da177e4SLinus Torvalds }
1481da177e4SLinus Torvalds }
1491da177e4SLinus Torvalds
node_desc_override(struct ib_device * dev,struct ib_mad * mad)1506dfc3901SRoland Dreier static void node_desc_override(struct ib_device *dev,
1516dfc3901SRoland Dreier struct ib_mad *mad)
1526dfc3901SRoland Dreier {
1536dfc3901SRoland Dreier if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
1546dfc3901SRoland Dreier mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) &&
1556dfc3901SRoland Dreier mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP &&
1566dfc3901SRoland Dreier mad->mad_hdr.attr_id == IB_SMP_ATTR_NODE_DESC) {
1576dfc3901SRoland Dreier mutex_lock(&to_mdev(dev)->cap_mask_mutex);
158bd99fdeaSYuval Shaia memcpy(((struct ib_smp *) mad)->data, dev->node_desc,
159bd99fdeaSYuval Shaia IB_DEVICE_NODE_DESC_MAX);
1606dfc3901SRoland Dreier mutex_unlock(&to_mdev(dev)->cap_mask_mutex);
1616dfc3901SRoland Dreier }
1626dfc3901SRoland Dreier }
1636dfc3901SRoland Dreier
forward_trap(struct mthca_dev * dev,u32 port_num,const struct ib_mad * mad)1641da177e4SLinus Torvalds static void forward_trap(struct mthca_dev *dev,
165*1fb7f897SMark Bloch u32 port_num,
166a97e2d86SIra Weiny const struct ib_mad *mad)
1671da177e4SLinus Torvalds {
1681da177e4SLinus Torvalds int qpn = mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED;
16934816ad9SSean Hefty struct ib_mad_send_buf *send_buf;
1701da177e4SLinus Torvalds struct ib_mad_agent *agent = dev->send_agent[port_num - 1][qpn];
1711da177e4SLinus Torvalds int ret;
1721da177e4SLinus Torvalds unsigned long flags;
1731da177e4SLinus Torvalds
1741da177e4SLinus Torvalds if (agent) {
17534816ad9SSean Hefty send_buf = ib_create_send_mad(agent, qpn, 0, 0, IB_MGMT_MAD_HDR,
176da2dfaa3SIra Weiny IB_MGMT_MAD_DATA, GFP_ATOMIC,
177da2dfaa3SIra Weiny IB_MGMT_BASE_VERSION);
178d0444f15SDan Carpenter if (IS_ERR(send_buf))
179d0444f15SDan Carpenter return;
1801da177e4SLinus Torvalds /*
1811da177e4SLinus Torvalds * We rely here on the fact that MLX QPs don't use the
1821da177e4SLinus Torvalds * address handle after the send is posted (this is
1831da177e4SLinus Torvalds * wrong following the IB spec strictly, but we know
1841da177e4SLinus Torvalds * it's OK for our devices).
1851da177e4SLinus Torvalds */
1861da177e4SLinus Torvalds spin_lock_irqsave(&dev->sm_lock, flags);
18734816ad9SSean Hefty memcpy(send_buf->mad, mad, sizeof *mad);
18834816ad9SSean Hefty if ((send_buf->ah = dev->sm_ah[port_num - 1]))
18934816ad9SSean Hefty ret = ib_post_send_mad(send_buf, NULL);
1901da177e4SLinus Torvalds else
1911da177e4SLinus Torvalds ret = -EINVAL;
1921da177e4SLinus Torvalds spin_unlock_irqrestore(&dev->sm_lock, flags);
1931da177e4SLinus Torvalds
19434816ad9SSean Hefty if (ret)
19534816ad9SSean Hefty ib_free_send_mad(send_buf);
1961da177e4SLinus Torvalds }
1971da177e4SLinus Torvalds }
1981da177e4SLinus Torvalds
mthca_process_mad(struct ib_device * ibdev,int mad_flags,u32 port_num,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const struct ib_mad * in,struct ib_mad * out,size_t * out_mad_size,u16 * out_mad_pkey_index)199*1fb7f897SMark Bloch int mthca_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
200e26e7b88SLeon Romanovsky const struct ib_wc *in_wc, const struct ib_grh *in_grh,
201e26e7b88SLeon Romanovsky const struct ib_mad *in, struct ib_mad *out,
202e26e7b88SLeon Romanovsky size_t *out_mad_size, u16 *out_mad_pkey_index)
2031da177e4SLinus Torvalds {
2041da177e4SLinus Torvalds int err;
20562ede777SHiatt, Don u16 slid = in_wc ? ib_lid_cpu16(in_wc->slid) : be16_to_cpu(IB_LID_PERMISSIVE);
206270b8b85SMoni Shoua u16 prev_lid = 0;
207270b8b85SMoni Shoua struct ib_port_attr pattr;
2084cd7c947SIra Weiny
2091da177e4SLinus Torvalds /* Forward locally generated traps to the SM */
210e26e7b88SLeon Romanovsky if (in->mad_hdr.method == IB_MGMT_METHOD_TRAP && !slid) {
211e26e7b88SLeon Romanovsky forward_trap(to_mdev(ibdev), port_num, in);
2121da177e4SLinus Torvalds return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
2131da177e4SLinus Torvalds }
2141da177e4SLinus Torvalds
2151da177e4SLinus Torvalds /*
2161da177e4SLinus Torvalds * Only handle SM gets, sets and trap represses for SM class
2171da177e4SLinus Torvalds *
2181da177e4SLinus Torvalds * Only handle PMA and Mellanox vendor-specific class gets and
2191da177e4SLinus Torvalds * sets for other classes.
2201da177e4SLinus Torvalds */
221e26e7b88SLeon Romanovsky if (in->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
222e26e7b88SLeon Romanovsky in->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
223e26e7b88SLeon Romanovsky if (in->mad_hdr.method != IB_MGMT_METHOD_GET &&
224e26e7b88SLeon Romanovsky in->mad_hdr.method != IB_MGMT_METHOD_SET &&
225e26e7b88SLeon Romanovsky in->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
2261da177e4SLinus Torvalds return IB_MAD_RESULT_SUCCESS;
2271da177e4SLinus Torvalds
2281da177e4SLinus Torvalds /*
2291da177e4SLinus Torvalds * Don't process SMInfo queries or vendor-specific
2301da177e4SLinus Torvalds * MADs -- the SMA can't handle them.
2311da177e4SLinus Torvalds */
232e26e7b88SLeon Romanovsky if (in->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO ||
233e26e7b88SLeon Romanovsky ((in->mad_hdr.attr_id & IB_SMP_ATTR_VENDOR_MASK) ==
2341da177e4SLinus Torvalds IB_SMP_ATTR_VENDOR_MASK))
2351da177e4SLinus Torvalds return IB_MAD_RESULT_SUCCESS;
236e26e7b88SLeon Romanovsky } else if (in->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
237e26e7b88SLeon Romanovsky in->mad_hdr.mgmt_class == MTHCA_VENDOR_CLASS1 ||
238e26e7b88SLeon Romanovsky in->mad_hdr.mgmt_class == MTHCA_VENDOR_CLASS2) {
239e26e7b88SLeon Romanovsky if (in->mad_hdr.method != IB_MGMT_METHOD_GET &&
240e26e7b88SLeon Romanovsky in->mad_hdr.method != IB_MGMT_METHOD_SET)
2411da177e4SLinus Torvalds return IB_MAD_RESULT_SUCCESS;
2421da177e4SLinus Torvalds } else
2431da177e4SLinus Torvalds return IB_MAD_RESULT_SUCCESS;
244e26e7b88SLeon Romanovsky if ((in->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
245e26e7b88SLeon Romanovsky in->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) &&
246e26e7b88SLeon Romanovsky in->mad_hdr.method == IB_MGMT_METHOD_SET &&
247e26e7b88SLeon Romanovsky in->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO &&
248270b8b85SMoni Shoua !ib_query_port(ibdev, port_num, &pattr))
24962ede777SHiatt, Don prev_lid = ib_lid_cpu16(pattr.lid);
2501da177e4SLinus Torvalds
251e26e7b88SLeon Romanovsky err = mthca_MAD_IFC(to_mdev(ibdev), mad_flags & IB_MAD_IGNORE_MKEY,
252e26e7b88SLeon Romanovsky mad_flags & IB_MAD_IGNORE_BKEY, port_num, in_wc,
253e26e7b88SLeon Romanovsky in_grh, in, out);
254cdb73db0SGoldwyn Rodrigues if (err == -EBADMSG)
2551da177e4SLinus Torvalds return IB_MAD_RESULT_SUCCESS;
256cdb73db0SGoldwyn Rodrigues else if (err) {
257cdb73db0SGoldwyn Rodrigues mthca_err(to_mdev(ibdev), "MAD_IFC returned %d\n", err);
2581da177e4SLinus Torvalds return IB_MAD_RESULT_FAILURE;
2591da177e4SLinus Torvalds }
2601da177e4SLinus Torvalds
261e26e7b88SLeon Romanovsky if (!out->mad_hdr.status) {
262e26e7b88SLeon Romanovsky smp_snoop(ibdev, port_num, in, prev_lid);
263e26e7b88SLeon Romanovsky node_desc_override(ibdev, out);
2646dfc3901SRoland Dreier }
2651da177e4SLinus Torvalds
2661da177e4SLinus Torvalds /* set return bit in status of directed route responses */
267e26e7b88SLeon Romanovsky if (in->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
268e26e7b88SLeon Romanovsky out->mad_hdr.status |= cpu_to_be16(1 << 15);
2691da177e4SLinus Torvalds
270e26e7b88SLeon Romanovsky if (in->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
2711da177e4SLinus Torvalds /* no response for trap repress */
2721da177e4SLinus Torvalds return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
2731da177e4SLinus Torvalds
2741da177e4SLinus Torvalds return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
2751da177e4SLinus Torvalds }
2761da177e4SLinus Torvalds
send_handler(struct ib_mad_agent * agent,struct ib_mad_send_wc * mad_send_wc)2771da177e4SLinus Torvalds static void send_handler(struct ib_mad_agent *agent,
2781da177e4SLinus Torvalds struct ib_mad_send_wc *mad_send_wc)
2791da177e4SLinus Torvalds {
28034816ad9SSean Hefty ib_free_send_mad(mad_send_wc->send_buf);
2811da177e4SLinus Torvalds }
2821da177e4SLinus Torvalds
mthca_create_agents(struct mthca_dev * dev)2831da177e4SLinus Torvalds int mthca_create_agents(struct mthca_dev *dev)
2841da177e4SLinus Torvalds {
2851da177e4SLinus Torvalds struct ib_mad_agent *agent;
2861da177e4SLinus Torvalds int p, q;
287bf6a9e31SJack Morgenstein int ret;
2881da177e4SLinus Torvalds
2891da177e4SLinus Torvalds spin_lock_init(&dev->sm_lock);
2901da177e4SLinus Torvalds
2911da177e4SLinus Torvalds for (p = 0; p < dev->limits.num_ports; ++p)
2921da177e4SLinus Torvalds for (q = 0; q <= 1; ++q) {
2931da177e4SLinus Torvalds agent = ib_register_mad_agent(&dev->ib_dev, p + 1,
2941da177e4SLinus Torvalds q ? IB_QPT_GSI : IB_QPT_SMI,
2951da177e4SLinus Torvalds NULL, 0, send_handler,
2960f29b46dSIra Weiny NULL, NULL, 0);
297bf6a9e31SJack Morgenstein if (IS_ERR(agent)) {
298bf6a9e31SJack Morgenstein ret = PTR_ERR(agent);
2991da177e4SLinus Torvalds goto err;
300bf6a9e31SJack Morgenstein }
3011da177e4SLinus Torvalds dev->send_agent[p][q] = agent;
3021da177e4SLinus Torvalds }
3031da177e4SLinus Torvalds
304bf6a9e31SJack Morgenstein
305bf6a9e31SJack Morgenstein for (p = 1; p <= dev->limits.num_ports; ++p) {
306bf6a9e31SJack Morgenstein ret = mthca_update_rate(dev, p);
307bf6a9e31SJack Morgenstein if (ret) {
308bf6a9e31SJack Morgenstein mthca_err(dev, "Failed to obtain port %d rate."
309bf6a9e31SJack Morgenstein " aborting.\n", p);
310bf6a9e31SJack Morgenstein goto err;
311bf6a9e31SJack Morgenstein }
312bf6a9e31SJack Morgenstein }
313bf6a9e31SJack Morgenstein
3141da177e4SLinus Torvalds return 0;
3151da177e4SLinus Torvalds
3161da177e4SLinus Torvalds err:
3171da177e4SLinus Torvalds for (p = 0; p < dev->limits.num_ports; ++p)
3181da177e4SLinus Torvalds for (q = 0; q <= 1; ++q)
3191da177e4SLinus Torvalds if (dev->send_agent[p][q])
3201da177e4SLinus Torvalds ib_unregister_mad_agent(dev->send_agent[p][q]);
3211da177e4SLinus Torvalds
322bf6a9e31SJack Morgenstein return ret;
3231da177e4SLinus Torvalds }
3241da177e4SLinus Torvalds
mthca_free_agents(struct mthca_dev * dev)325f4f3d0f0SRoland Dreier void mthca_free_agents(struct mthca_dev *dev)
3261da177e4SLinus Torvalds {
3271da177e4SLinus Torvalds struct ib_mad_agent *agent;
3281da177e4SLinus Torvalds int p, q;
3291da177e4SLinus Torvalds
3301da177e4SLinus Torvalds for (p = 0; p < dev->limits.num_ports; ++p) {
3311da177e4SLinus Torvalds for (q = 0; q <= 1; ++q) {
3321da177e4SLinus Torvalds agent = dev->send_agent[p][q];
3331da177e4SLinus Torvalds dev->send_agent[p][q] = NULL;
3341da177e4SLinus Torvalds ib_unregister_mad_agent(agent);
3351da177e4SLinus Torvalds }
3361da177e4SLinus Torvalds
3371da177e4SLinus Torvalds if (dev->sm_ah[p])
3382553ba21SGal Pressman rdma_destroy_ah(dev->sm_ah[p],
3392553ba21SGal Pressman RDMA_DESTROY_AH_SLEEPABLE);
3401da177e4SLinus Torvalds }
3411da177e4SLinus Torvalds }
342