forked from Minki/linux
b27075735e
The SM LID used to send traps to is incorrectly set to port LID. This
is a regression from 2.6.17 -- after a PortInfo MAD is received, no
traps are sent to the SM LID. The traps go to the loopback interface
instead, and are dropped there. The SM LID should be taken from the
sm_lid of the PortInfo response.
The bug was introduced by commit 12bbb2b7be:
IB/mthca: Add client reregister event generation
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
336 lines
9.5 KiB
C
336 lines
9.5 KiB
C
/*
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* Copyright (c) 2004 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2004 Voltaire, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* $Id: mthca_mad.c 1349 2004-12-16 21:09:43Z roland $
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*/
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <rdma/ib_verbs.h>
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#include <rdma/ib_mad.h>
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#include <rdma/ib_smi.h>
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#include "mthca_dev.h"
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#include "mthca_cmd.h"
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enum {
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MTHCA_VENDOR_CLASS1 = 0x9,
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MTHCA_VENDOR_CLASS2 = 0xa
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};
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static int mthca_update_rate(struct mthca_dev *dev, u8 port_num)
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{
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struct ib_port_attr *tprops = NULL;
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int ret;
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tprops = kmalloc(sizeof *tprops, GFP_KERNEL);
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if (!tprops)
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return -ENOMEM;
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ret = ib_query_port(&dev->ib_dev, port_num, tprops);
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if (ret) {
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printk(KERN_WARNING "ib_query_port failed (%d) for %s port %d\n",
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ret, dev->ib_dev.name, port_num);
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goto out;
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}
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dev->rate[port_num - 1] = tprops->active_speed *
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ib_width_enum_to_int(tprops->active_width);
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out:
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kfree(tprops);
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return ret;
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}
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static void update_sm_ah(struct mthca_dev *dev,
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u8 port_num, u16 lid, u8 sl)
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{
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struct ib_ah *new_ah;
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struct ib_ah_attr ah_attr;
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unsigned long flags;
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if (!dev->send_agent[port_num - 1][0])
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return;
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memset(&ah_attr, 0, sizeof ah_attr);
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ah_attr.dlid = lid;
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ah_attr.sl = sl;
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ah_attr.port_num = port_num;
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new_ah = ib_create_ah(dev->send_agent[port_num - 1][0]->qp->pd,
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&ah_attr);
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if (IS_ERR(new_ah))
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return;
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spin_lock_irqsave(&dev->sm_lock, flags);
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if (dev->sm_ah[port_num - 1])
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ib_destroy_ah(dev->sm_ah[port_num - 1]);
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dev->sm_ah[port_num - 1] = new_ah;
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spin_unlock_irqrestore(&dev->sm_lock, flags);
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}
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/*
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* Snoop SM MADs for port info and P_Key table sets, so we can
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* synthesize LID change and P_Key change events.
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*/
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static void smp_snoop(struct ib_device *ibdev,
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u8 port_num,
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struct ib_mad *mad)
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{
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struct ib_event event;
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if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
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mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) &&
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mad->mad_hdr.method == IB_MGMT_METHOD_SET) {
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if (mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO) {
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struct ib_port_info *pinfo =
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(struct ib_port_info *) ((struct ib_smp *) mad)->data;
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mthca_update_rate(to_mdev(ibdev), port_num);
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update_sm_ah(to_mdev(ibdev), port_num,
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be16_to_cpu(pinfo->sm_lid),
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pinfo->neighbormtu_mastersmsl & 0xf);
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event.device = ibdev;
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event.element.port_num = port_num;
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if(pinfo->clientrereg_resv_subnetto & 0x80)
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event.event = IB_EVENT_CLIENT_REREGISTER;
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else
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event.event = IB_EVENT_LID_CHANGE;
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ib_dispatch_event(&event);
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}
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if (mad->mad_hdr.attr_id == IB_SMP_ATTR_PKEY_TABLE) {
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event.device = ibdev;
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event.event = IB_EVENT_PKEY_CHANGE;
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event.element.port_num = port_num;
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ib_dispatch_event(&event);
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}
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}
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}
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static void node_desc_override(struct ib_device *dev,
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struct ib_mad *mad)
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{
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if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
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mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) &&
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mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP &&
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mad->mad_hdr.attr_id == IB_SMP_ATTR_NODE_DESC) {
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mutex_lock(&to_mdev(dev)->cap_mask_mutex);
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memcpy(((struct ib_smp *) mad)->data, dev->node_desc, 64);
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mutex_unlock(&to_mdev(dev)->cap_mask_mutex);
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}
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}
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static void forward_trap(struct mthca_dev *dev,
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u8 port_num,
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struct ib_mad *mad)
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{
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int qpn = mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED;
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struct ib_mad_send_buf *send_buf;
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struct ib_mad_agent *agent = dev->send_agent[port_num - 1][qpn];
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int ret;
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unsigned long flags;
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if (agent) {
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send_buf = ib_create_send_mad(agent, qpn, 0, 0, IB_MGMT_MAD_HDR,
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IB_MGMT_MAD_DATA, GFP_ATOMIC);
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/*
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* We rely here on the fact that MLX QPs don't use the
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* address handle after the send is posted (this is
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* wrong following the IB spec strictly, but we know
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* it's OK for our devices).
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*/
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spin_lock_irqsave(&dev->sm_lock, flags);
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memcpy(send_buf->mad, mad, sizeof *mad);
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if ((send_buf->ah = dev->sm_ah[port_num - 1]))
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ret = ib_post_send_mad(send_buf, NULL);
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else
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ret = -EINVAL;
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spin_unlock_irqrestore(&dev->sm_lock, flags);
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if (ret)
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ib_free_send_mad(send_buf);
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}
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}
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int mthca_process_mad(struct ib_device *ibdev,
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int mad_flags,
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u8 port_num,
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struct ib_wc *in_wc,
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struct ib_grh *in_grh,
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struct ib_mad *in_mad,
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struct ib_mad *out_mad)
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{
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int err;
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u8 status;
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u16 slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
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/* Forward locally generated traps to the SM */
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if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP &&
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slid == 0) {
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forward_trap(to_mdev(ibdev), port_num, in_mad);
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return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
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}
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/*
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* Only handle SM gets, sets and trap represses for SM class
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*
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* Only handle PMA and Mellanox vendor-specific class gets and
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* sets for other classes.
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*/
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if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
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in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
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if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
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in_mad->mad_hdr.method != IB_MGMT_METHOD_SET &&
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in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
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return IB_MAD_RESULT_SUCCESS;
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/*
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* Don't process SMInfo queries or vendor-specific
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* MADs -- the SMA can't handle them.
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*/
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if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO ||
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((in_mad->mad_hdr.attr_id & IB_SMP_ATTR_VENDOR_MASK) ==
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IB_SMP_ATTR_VENDOR_MASK))
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return IB_MAD_RESULT_SUCCESS;
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} else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
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in_mad->mad_hdr.mgmt_class == MTHCA_VENDOR_CLASS1 ||
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in_mad->mad_hdr.mgmt_class == MTHCA_VENDOR_CLASS2) {
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if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
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in_mad->mad_hdr.method != IB_MGMT_METHOD_SET)
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return IB_MAD_RESULT_SUCCESS;
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} else
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return IB_MAD_RESULT_SUCCESS;
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err = mthca_MAD_IFC(to_mdev(ibdev),
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mad_flags & IB_MAD_IGNORE_MKEY,
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mad_flags & IB_MAD_IGNORE_BKEY,
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port_num, in_wc, in_grh, in_mad, out_mad,
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&status);
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if (err) {
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mthca_err(to_mdev(ibdev), "MAD_IFC failed\n");
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return IB_MAD_RESULT_FAILURE;
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}
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if (status == MTHCA_CMD_STAT_BAD_PKT)
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return IB_MAD_RESULT_SUCCESS;
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if (status) {
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mthca_err(to_mdev(ibdev), "MAD_IFC returned status %02x\n",
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status);
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return IB_MAD_RESULT_FAILURE;
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}
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if (!out_mad->mad_hdr.status) {
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smp_snoop(ibdev, port_num, in_mad);
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node_desc_override(ibdev, out_mad);
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}
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/* set return bit in status of directed route responses */
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if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
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out_mad->mad_hdr.status |= cpu_to_be16(1 << 15);
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if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
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/* no response for trap repress */
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return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
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return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
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}
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static void send_handler(struct ib_mad_agent *agent,
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struct ib_mad_send_wc *mad_send_wc)
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{
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ib_free_send_mad(mad_send_wc->send_buf);
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}
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int mthca_create_agents(struct mthca_dev *dev)
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{
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struct ib_mad_agent *agent;
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int p, q;
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int ret;
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spin_lock_init(&dev->sm_lock);
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for (p = 0; p < dev->limits.num_ports; ++p)
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for (q = 0; q <= 1; ++q) {
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agent = ib_register_mad_agent(&dev->ib_dev, p + 1,
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q ? IB_QPT_GSI : IB_QPT_SMI,
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NULL, 0, send_handler,
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NULL, NULL);
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if (IS_ERR(agent)) {
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ret = PTR_ERR(agent);
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goto err;
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}
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dev->send_agent[p][q] = agent;
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}
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for (p = 1; p <= dev->limits.num_ports; ++p) {
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ret = mthca_update_rate(dev, p);
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if (ret) {
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mthca_err(dev, "Failed to obtain port %d rate."
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" aborting.\n", p);
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goto err;
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}
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}
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return 0;
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err:
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for (p = 0; p < dev->limits.num_ports; ++p)
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for (q = 0; q <= 1; ++q)
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if (dev->send_agent[p][q])
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ib_unregister_mad_agent(dev->send_agent[p][q]);
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return ret;
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}
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void __devexit mthca_free_agents(struct mthca_dev *dev)
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{
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struct ib_mad_agent *agent;
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int p, q;
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for (p = 0; p < dev->limits.num_ports; ++p) {
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for (q = 0; q <= 1; ++q) {
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agent = dev->send_agent[p][q];
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dev->send_agent[p][q] = NULL;
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ib_unregister_mad_agent(agent);
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}
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if (dev->sm_ah[p])
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ib_destroy_ah(dev->sm_ah[p]);
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}
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}
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