/*
* Copyright (c) 2004 Topspin Communications. All rights reserved.
* Copyright (c) 2005 Voltaire, Inc. All rights reserved.
* Copyright (c) 2006 Intel Corporation. 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/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <linux/kref.h>
#include <linux/idr.h>
#include <linux/workqueue.h>
#include <rdma/ib_pack.h>
#include <rdma/ib_cache.h>
#include "sa.h"
MODULE_AUTHOR("Roland Dreier");
MODULE_DESCRIPTION("InfiniBand subnet administration query support");
MODULE_LICENSE("Dual BSD/GPL");
struct ib_sa_sm_ah {
struct ib_ah *ah;
struct kref ref;
u16 pkey_index;
u8 src_path_mask;
};
struct ib_sa_port {
struct ib_mad_agent *agent;
struct ib_sa_sm_ah *sm_ah;
struct work_struct update_task;
spinlock_t ah_lock;
u8 port_num;
};
struct ib_sa_device {
int start_port, end_port;
struct ib_event_handler event_handler;
struct ib_sa_port port[0];
};
struct ib_sa_query {
void (*callback)(struct ib_sa_query *, int, struct ib_sa_mad *);
void (*release)(struct ib_sa_query *);
struct ib_sa_client *client;
struct ib_sa_port *port;
struct ib_mad_send_buf *mad_buf;
struct ib_sa_sm_ah *sm_ah;
int id;
};
struct ib_sa_service_query {
void (*callback)(int, struct ib_sa_service_rec *, void *);
void *context;
struct ib_sa_query sa_query;
};
struct ib_sa_path_query {
void (*callback)(int, struct ib_sa_path_rec *, void *);
void *context;
struct ib_sa_query sa_query;
};
struct ib_sa_mcmember_query {
void (*callback)(int, struct ib_sa_mcmember_rec *, void *);
void *context;
struct ib_sa_query sa_query;
};
static void ib_sa_add_one(struct ib_device *device);
static void ib_sa_remove_one(struct ib_device *device);
static struct ib_client sa_client = {
.name = "sa",
.add = ib_sa_add_one,
.remove = ib_sa_remove_one
};
static DEFINE_SPINLOCK(idr_lock);
static DEFINE_IDR(query_idr);
static DEFINE_SPINLOCK(tid_lock);
static u32 tid;
#define PATH_REC_FIELD(field) \
.struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \
.struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \
.field_name = "sa_path_rec:" #field
static const struct ib_field path_rec_table[] = {
{ PATH_REC_FIELD(service_id),
.offset_words = 0,
.offset_bits = 0,
.size_bits = 64 },
{ PATH_REC_FIELD(dgid),
.offset_words = 2,
.offset_bits = 0,
.size_bits = 128 },
{ PATH_REC_FIELD(sgid),
.offset_words = 6,
.offset_bits = 0,
.size_bits = 128 },
{ PATH_REC_FIELD(dlid),
.offset_words = 10,
.offset_bits = 0,
.size_bits = 16 },
{ PATH_REC_FIELD(slid),
.