linux/drivers/infiniband/hw/mthca/mthca_mad.c

/*
 * Copyright (c) 2004 Topspin Communications.  All rights reserved.
 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/string.h>
#include <linux/slab.h>

#include <rdma/ib_verbs.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_smi.h>

#include "mthca_dev.h"
#include "mthca_cmd.h"

enum { … };

static int mthca_update_rate(struct mthca_dev *dev, u8 port_num)
{ … }

static void update_sm_ah(struct mthca_dev *dev,
			 u8 port_num, u16 lid, u8 sl)
{ … }

/*
 * Snoop SM MADs for port info and P_Key table sets, so we can
 * synthesize LID change and P_Key change events.
 */
static void smp_snoop(struct ib_device *ibdev,
		      u8 port_num,
		      const struct ib_mad *mad,
		      u16 prev_lid)
{ … }

static void node_desc_override(struct ib_device *dev,
			       struct ib_mad *mad)
{ … }

static void forward_trap(struct mthca_dev *dev,
			 u32 port_num,
			 const struct ib_mad *mad)
{ … }

int 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)
{ … }

static void send_handler(struct ib_mad_agent *agent,
			 struct ib_mad_send_wc *mad_send_wc)
{ … }

int mthca_create_agents(struct mthca_dev *dev)
{ … }

void mthca_free_agents(struct mthca_dev *dev)
{ … }