Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
866
drivers/infiniband/core/sa_query.c
Normal file
866
drivers/infiniband/core/sa_query.c
Normal file
@@ -0,0 +1,866 @@
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/*
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* Copyright (c) 2004 Topspin Communications. 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: sa_query.c 1389 2004-12-27 22:56:47Z roland $
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/random.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/kref.h>
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#include <linux/idr.h>
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#include <ib_pack.h>
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#include <ib_sa.h>
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MODULE_AUTHOR("Roland Dreier");
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MODULE_DESCRIPTION("InfiniBand subnet administration query support");
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MODULE_LICENSE("Dual BSD/GPL");
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/*
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* These two structures must be packed because they have 64-bit fields
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* that are only 32-bit aligned. 64-bit architectures will lay them
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* out wrong otherwise. (And unfortunately they are sent on the wire
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* so we can't change the layout)
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*/
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struct ib_sa_hdr {
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u64 sm_key;
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u16 attr_offset;
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u16 reserved;
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ib_sa_comp_mask comp_mask;
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} __attribute__ ((packed));
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struct ib_sa_mad {
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struct ib_mad_hdr mad_hdr;
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struct ib_rmpp_hdr rmpp_hdr;
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struct ib_sa_hdr sa_hdr;
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u8 data[200];
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} __attribute__ ((packed));
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struct ib_sa_sm_ah {
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struct ib_ah *ah;
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struct kref ref;
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};
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struct ib_sa_port {
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struct ib_mad_agent *agent;
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struct ib_mr *mr;
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struct ib_sa_sm_ah *sm_ah;
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struct work_struct update_task;
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spinlock_t ah_lock;
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u8 port_num;
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};
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struct ib_sa_device {
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int start_port, end_port;
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struct ib_event_handler event_handler;
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struct ib_sa_port port[0];
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};
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struct ib_sa_query {
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void (*callback)(struct ib_sa_query *, int, struct ib_sa_mad *);
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void (*release)(struct ib_sa_query *);
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struct ib_sa_port *port;
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struct ib_sa_mad *mad;
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struct ib_sa_sm_ah *sm_ah;
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DECLARE_PCI_UNMAP_ADDR(mapping)
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int id;
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};
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struct ib_sa_path_query {
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void (*callback)(int, struct ib_sa_path_rec *, void *);
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void *context;
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struct ib_sa_query sa_query;
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};
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struct ib_sa_mcmember_query {
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void (*callback)(int, struct ib_sa_mcmember_rec *, void *);
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void *context;
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struct ib_sa_query sa_query;
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};
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static void ib_sa_add_one(struct ib_device *device);
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static void ib_sa_remove_one(struct ib_device *device);
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static struct ib_client sa_client = {
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.name = "sa",
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.add = ib_sa_add_one,
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.remove = ib_sa_remove_one
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};
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static spinlock_t idr_lock;
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static DEFINE_IDR(query_idr);
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static spinlock_t tid_lock;
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static u32 tid;
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enum {
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IB_SA_ATTR_CLASS_PORTINFO = 0x01,
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IB_SA_ATTR_NOTICE = 0x02,
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IB_SA_ATTR_INFORM_INFO = 0x03,
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IB_SA_ATTR_NODE_REC = 0x11,
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IB_SA_ATTR_PORT_INFO_REC = 0x12,
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IB_SA_ATTR_SL2VL_REC = 0x13,
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IB_SA_ATTR_SWITCH_REC = 0x14,
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IB_SA_ATTR_LINEAR_FDB_REC = 0x15,
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IB_SA_ATTR_RANDOM_FDB_REC = 0x16,
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IB_SA_ATTR_MCAST_FDB_REC = 0x17,
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IB_SA_ATTR_SM_INFO_REC = 0x18,
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IB_SA_ATTR_LINK_REC = 0x20,
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IB_SA_ATTR_GUID_INFO_REC = 0x30,
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IB_SA_ATTR_SERVICE_REC = 0x31,
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IB_SA_ATTR_PARTITION_REC = 0x33,
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IB_SA_ATTR_RANGE_REC = 0x34,
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IB_SA_ATTR_PATH_REC = 0x35,
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IB_SA_ATTR_VL_ARB_REC = 0x36,
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IB_SA_ATTR_MC_GROUP_REC = 0x37,
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IB_SA_ATTR_MC_MEMBER_REC = 0x38,
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IB_SA_ATTR_TRACE_REC = 0x39,
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IB_SA_ATTR_MULTI_PATH_REC = 0x3a,
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IB_SA_ATTR_SERVICE_ASSOC_REC = 0x3b
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};
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#define PATH_REC_FIELD(field) \
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.struct_offset_bytes = offsetof(struct ib_sa_path_rec, field), \
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.struct_size_bytes = sizeof ((struct ib_sa_path_rec *) 0)->field, \
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.field_name = "sa_path_rec:" #field
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static const struct ib_field path_rec_table[] = {
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{ RESERVED,
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.offset_words = 0,
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.offset_bits = 0,
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.size_bits = 32 },
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{ RESERVED,
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.offset_words = 1,
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.offset_bits = 0,
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.size_bits = 32 },
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{ PATH_REC_FIELD(dgid),
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.offset_words = 2,
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.offset_bits = 0,
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.size_bits = 128 },
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{ PATH_REC_FIELD(sgid),
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.offset_words = 6,
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.offset_bits = 0,
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.size_bits = 128 },
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{ PATH_REC_FIELD(dlid),
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.offset_words = 10,
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.offset_bits = 0,
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.size_bits = 16 },
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{ PATH_REC_FIELD(slid),
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.offset_words = 10,
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.offset_bits = 16,
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.size_bits = 16 },
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{ PATH_REC_FIELD(raw_traffic),
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.offset_words = 11,
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.offset_bits = 0,
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.size_bits = 1 },
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{ RESERVED,
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.offset_words = 11,
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.offset_bits = 1,
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.size_bits = 3 },
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{ PATH_REC_FIELD(flow_label),
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.offset_words = 11,
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.offset_bits = 4,
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.size_bits = 20 },
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{ PATH_REC_FIELD(hop_limit),
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.offset_words = 11,
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.offset_bits = 24,
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.size_bits = 8 },
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{ PATH_REC_FIELD(traffic_class),
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.offset_words = 12,
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.offset_bits = 0,
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.size_bits = 8 },
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{ PATH_REC_FIELD(reversible),
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.offset_words = 12,
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.offset_bits = 8,
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.size_bits = 1 },
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{ PATH_REC_FIELD(numb_path),
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.offset_words = 12,
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.offset_bits = 9,
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.size_bits = 7 },
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{ PATH_REC_FIELD(pkey),
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.offset_words = 12,
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.offset_bits = 16,
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.size_bits = 16 },
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{ RESERVED,
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.offset_words = 13,
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.offset_bits = 0,
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.size_bits = 12 },
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{ PATH_REC_FIELD(sl),
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.offset_words = 13,
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.offset_bits = 12,
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.size_bits = 4 },
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{ PATH_REC_FIELD(mtu_selector),
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.offset_words = 13,
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.offset_bits = 16,
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.size_bits = 2 },
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{ PATH_REC_FIELD(mtu),
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.offset_words = 13,
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.offset_bits = 18,
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.size_bits = 6 },
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{ PATH_REC_FIELD(rate_selector),
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.offset_words = 13,
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.offset_bits = 24,
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.size_bits = 2 },
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{ PATH_REC_FIELD(rate),
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.offset_words = 13,
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.offset_bits = 26,
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.size_bits = 6 },
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{ PATH_REC_FIELD(packet_life_time_selector),
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.offset_words = 14,
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.offset_bits = 0,
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.size_bits = 2 },
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{ PATH_REC_FIELD(packet_life_time),
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.offset_words = 14,
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.offset_bits = 2,
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.size_bits = 6 },
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{ PATH_REC_FIELD(preference),
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.offset_words = 14,
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.offset_bits = 8,
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.size_bits = 8 },
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{ RESERVED,
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.offset_words = 14,
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.offset_bits = 16,
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.size_bits = 48 },
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};
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#define MCMEMBER_REC_FIELD(field) \
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.struct_offset_bytes = offsetof(struct ib_sa_mcmember_rec, field), \
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.struct_size_bytes = sizeof ((struct ib_sa_mcmember_rec *) 0)->field, \
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.field_name = "sa_mcmember_rec:" #field
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static const struct ib_field mcmember_rec_table[] = {
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{ MCMEMBER_REC_FIELD(mgid),
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.offset_words = 0,
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.offset_bits = 0,
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.size_bits = 128 },
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{ MCMEMBER_REC_FIELD(port_gid),
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.offset_words = 4,
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.offset_bits = 0,
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.size_bits = 128 },
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{ MCMEMBER_REC_FIELD(qkey),
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.offset_words = 8,
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.offset_bits = 0,
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.size_bits = 32 },
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{ MCMEMBER_REC_FIELD(mlid),
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.offset_words = 9,
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.offset_bits = 0,
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.size_bits = 16 },
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{ MCMEMBER_REC_FIELD(mtu_selector),
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.offset_words = 9,
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.offset_bits = 16,
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.size_bits = 2 },
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{ MCMEMBER_REC_FIELD(mtu),
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.offset_words = 9,
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.offset_bits = 18,
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.size_bits = 6 },
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{ MCMEMBER_REC_FIELD(traffic_class),
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.offset_words = 9,
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.offset_bits = 24,
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.size_bits = 8 },
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{ MCMEMBER_REC_FIELD(pkey),
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.offset_words = 10,
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.offset_bits = 0,
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.size_bits = 16 },
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{ MCMEMBER_REC_FIELD(rate_selector),
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.offset_words = 10,
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.offset_bits = 16,
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.size_bits = 2 },
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{ MCMEMBER_REC_FIELD(rate),
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.offset_words = 10,
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.offset_bits = 18,
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.size_bits = 6 },
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{ MCMEMBER_REC_FIELD(packet_life_time_selector),
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.offset_words = 10,
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.offset_bits = 24,
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.size_bits = 2 },
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{ MCMEMBER_REC_FIELD(packet_life_time),
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.offset_words = 10,
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.offset_bits = 26,
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.size_bits = 6 },
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{ MCMEMBER_REC_FIELD(sl),
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.offset_words = 11,
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.offset_bits = 0,
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.size_bits = 4 },
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{ MCMEMBER_REC_FIELD(flow_label),
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.offset_words = 11,
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.offset_bits = 4,
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.size_bits = 20 },
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{ MCMEMBER_REC_FIELD(hop_limit),
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.offset_words = 11,
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.offset_bits = 24,
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.size_bits = 8 },
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{ MCMEMBER_REC_FIELD(scope),
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.offset_words = 12,
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.offset_bits = 0,
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.size_bits = 4 },
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{ MCMEMBER_REC_FIELD(join_state),
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.offset_words = 12,
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.offset_bits = 4,
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.size_bits = 4 },
|
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{ MCMEMBER_REC_FIELD(proxy_join),
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.offset_words = 12,
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||||
.offset_bits = 8,
|
||||
.size_bits = 1 },
|
||||
{ RESERVED,
|
||||
.offset_words = 12,
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||||
.offset_bits = 9,
|
||||
.size_bits = 23 },
|
||||
};
|
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static void free_sm_ah(struct kref *kref)
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{
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struct ib_sa_sm_ah *sm_ah = container_of(kref, struct ib_sa_sm_ah, ref);
|
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ib_destroy_ah(sm_ah->ah);
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kfree(sm_ah);
|
||||
}
|
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|
||||
static void update_sm_ah(void *port_ptr)
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{
|
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struct ib_sa_port *port = port_ptr;
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struct ib_sa_sm_ah *new_ah, *old_ah;
|
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struct ib_port_attr port_attr;
|
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struct ib_ah_attr ah_attr;
|
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|
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if (ib_query_port(port->agent->device, port->port_num, &port_attr)) {
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printk(KERN_WARNING "Couldn't query port\n");
|
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return;
|
||||
}
|
||||
|
||||
new_ah = kmalloc(sizeof *new_ah, GFP_KERNEL);
|
||||
if (!new_ah) {
|
||||
printk(KERN_WARNING "Couldn't allocate new SM AH\n");
|
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return;
|
||||
}
|
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|
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kref_init(&new_ah->ref);
|
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|
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memset(&ah_attr, 0, sizeof ah_attr);
|
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ah_attr.dlid = port_attr.sm_lid;
|
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ah_attr.sl = port_attr.sm_sl;
|
||||
ah_attr.port_num = port->port_num;
|
||||
|
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new_ah->ah = ib_create_ah(port->agent->qp->pd, &ah_attr);
|
||||
if (IS_ERR(new_ah->ah)) {
|
||||
printk(KERN_WARNING "Couldn't create new SM AH\n");
|
||||
kfree(new_ah);
|
||||
return;
|
||||
}
|
||||
|
||||
spin_lock_irq(&port->ah_lock);
|
||||
old_ah = port->sm_ah;
|
||||
port->sm_ah = new_ah;
|
||||
spin_unlock_irq(&port->ah_lock);
|
||||
|
||||
if (old_ah)
|
||||
kref_put(&old_ah->ref, free_sm_ah);
|
||||
}
|
||||
|
||||
static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event)
|
||||
{
|
||||
if (event->event == IB_EVENT_PORT_ERR ||
|
||||
event->event == IB_EVENT_PORT_ACTIVE ||
|
||||
event->event == IB_EVENT_LID_CHANGE ||
|
||||
event->event == IB_EVENT_PKEY_CHANGE ||
|
||||
event->event == IB_EVENT_SM_CHANGE) {
|
||||
struct ib_sa_device *sa_dev =
|
||||
ib_get_client_data(event->device, &sa_client);
|
||||
|
||||
schedule_work(&sa_dev->port[event->element.port_num -
|
||||
sa_dev->start_port].update_task);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* ib_sa_cancel_query - try to cancel an SA query
|
||||
* @id:ID of query to cancel
|
||||
* @query:query pointer to cancel
|
||||
*
|
||||
* Try to cancel an SA query. If the id and query don't match up or
|
||||
* the query has already completed, nothing is done. Otherwise the
|
||||
* query is canceled and will complete with a status of -EINTR.
|
||||
*/
|
||||
void ib_sa_cancel_query(int id, struct ib_sa_query *query)
|
||||
{
|
||||
unsigned long flags;
|
||||
struct ib_mad_agent *agent;
|
||||
|
||||
spin_lock_irqsave(&idr_lock, flags);
|
||||
if (idr_find(&query_idr, id) != query) {
|
||||
spin_unlock_irqrestore(&idr_lock, flags);
|
||||
return;
|
||||
}
|
||||
agent = query->port->agent;
|
||||
spin_unlock_irqrestore(&idr_lock, flags);
|
||||
|
||||
ib_cancel_mad(agent, id);
|
||||
}
|
||||
EXPORT_SYMBOL(ib_sa_cancel_query);
|
||||
|
||||
static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent)
|
||||
{
|
||||
unsigned long flags;
|
||||
|
||||
memset(mad, 0, sizeof *mad);
|
||||
|
||||
mad->mad_hdr.base_version = IB_MGMT_BASE_VERSION;
|
||||
mad->mad_hdr.mgmt_class = IB_MGMT_CLASS_SUBN_ADM;
|
||||
mad->mad_hdr.class_version = IB_SA_CLASS_VERSION;
|
||||
|
||||
spin_lock_irqsave(&tid_lock, flags);
|
||||
mad->mad_hdr.tid =
|
||||
cpu_to_be64(((u64) agent->hi_tid) << 32 | tid++);
|
||||
spin_unlock_irqrestore(&tid_lock, flags);
|
||||
}
|
||||
|
||||
static int send_mad(struct ib_sa_query *query, int timeout_ms)
|
||||
{
|
||||
struct ib_sa_port *port = query->port;
|
||||
unsigned long flags;
|
||||
int ret;
|
||||
struct ib_sge gather_list;
|
||||
struct ib_send_wr *bad_wr, wr = {
|
||||
.opcode = IB_WR_SEND,
|
||||
.sg_list = &gather_list,
|
||||
.num_sge = 1,
|
||||
.send_flags = IB_SEND_SIGNALED,
|
||||
.wr = {
|
||||
.ud = {
|
||||
.mad_hdr = &query->mad->mad_hdr,
|
||||
.remote_qpn = 1,
|
||||
.remote_qkey = IB_QP1_QKEY,
|
||||
.timeout_ms = timeout_ms
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
retry:
|
||||
if (!idr_pre_get(&query_idr, GFP_ATOMIC))
|
||||
return -ENOMEM;
|
||||
spin_lock_irqsave(&idr_lock, flags);
|
||||
ret = idr_get_new(&query_idr, query, &query->id);
|
||||
spin_unlock_irqrestore(&idr_lock, flags);
|
||||
if (ret == -EAGAIN)
|
||||
goto retry;
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
wr.wr_id = query->id;
|
||||
|
||||
spin_lock_irqsave(&port->ah_lock, flags);
|
||||
kref_get(&port->sm_ah->ref);
|
||||
query->sm_ah = port->sm_ah;
|
||||
wr.wr.ud.ah = port->sm_ah->ah;
|
||||
spin_unlock_irqrestore(&port->ah_lock, flags);
|
||||
|
||||
gather_list.addr = dma_map_single(port->agent->device->dma_device,
|
||||
query->mad,
|
||||
sizeof (struct ib_sa_mad),
|
||||
DMA_TO_DEVICE);
|
||||
gather_list.length = sizeof (struct ib_sa_mad);
|
||||
gather_list.lkey = port->mr->lkey;
|
||||
pci_unmap_addr_set(query, mapping, gather_list.addr);
|
||||
|
||||
ret = ib_post_send_mad(port->agent, &wr, &bad_wr);
|
||||
if (ret) {
|
||||
dma_unmap_single(port->agent->device->dma_device,
|
||||
pci_unmap_addr(query, mapping),
|
||||
sizeof (struct ib_sa_mad),
|
||||
DMA_TO_DEVICE);
|
||||
kref_put(&query->sm_ah->ref, free_sm_ah);
|
||||
spin_lock_irqsave(&idr_lock, flags);
|
||||
idr_remove(&query_idr, query->id);
|
||||
spin_unlock_irqrestore(&idr_lock, flags);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void ib_sa_path_rec_callback(struct ib_sa_query *sa_query,
|
||||
int status,
|
||||
struct ib_sa_mad *mad)
|
||||
{
|
||||
struct ib_sa_path_query *query =
|
||||
container_of(sa_query, struct ib_sa_path_query, sa_query);
|
||||
|
||||
if (mad) {
|
||||
struct ib_sa_path_rec rec;
|
||||
|
||||
ib_unpack(path_rec_table, ARRAY_SIZE(path_rec_table),
|
||||
mad->data, &rec);
|
||||
query->callback(status, &rec, query->context);
|
||||
} else
|
||||
query->callback(status, NULL, query->context);
|
||||
}
|
||||
|
||||
static void ib_sa_path_rec_release(struct ib_sa_query *sa_query)
|
||||
{
|
||||
kfree(sa_query->mad);
|
||||
kfree(container_of(sa_query, struct ib_sa_path_query, sa_query));
|
||||
}
|
||||
|
||||
/**
|
||||
* ib_sa_path_rec_get - Start a Path get query
|
||||
* @device:device to send query on
|
||||
* @port_num: port number to send query on
|
||||
* @rec:Path Record to send in query
|
||||
* @comp_mask:component mask to send in query
|
||||
* @timeout_ms:time to wait for response
|
||||
* @gfp_mask:GFP mask to use for internal allocations
|
||||
* @callback:function called when query completes, times out or is
|
||||
* canceled
|
||||
* @context:opaque user context passed to callback
|
||||
* @sa_query:query context, used to cancel query
|
||||
*
|
||||
* Send a Path Record Get query to the SA to look up a path. The
|
||||
* callback function will be called when the query completes (or
|
||||
* fails); status is 0 for a successful response, -EINTR if the query
|
||||
* is canceled, -ETIMEDOUT is the query timed out, or -EIO if an error
|
||||
* occurred sending the query. The resp parameter of the callback is
|
||||
* only valid if status is 0.
|
||||
*
|
||||
* If the return value of ib_sa_path_rec_get() is negative, it is an
|
||||
* error code. Otherwise it is a query ID that can be used to cancel
|
||||
* the query.
|
||||
*/
|
||||
int ib_sa_path_rec_get(struct ib_device *device, u8 port_num,
|
||||
struct ib_sa_path_rec *rec,
|
||||
ib_sa_comp_mask comp_mask,
|
||||
int timeout_ms, int gfp_mask,
|
||||
void (*callback)(int status,
|
||||
struct ib_sa_path_rec *resp,
|
||||
void *context),
|
||||
void *context,
|
||||
struct ib_sa_query **sa_query)
|
||||
{
|
||||
struct ib_sa_path_query *query;
|
||||
struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client);
|
||||
struct ib_sa_port *port = &sa_dev->port[port_num - sa_dev->start_port];
|
||||
struct ib_mad_agent *agent = port->agent;
|
||||
int ret;
|
||||
|
||||
query = kmalloc(sizeof *query, gfp_mask);
|
||||
if (!query)
|
||||
return -ENOMEM;
|
||||
query->sa_query.mad = kmalloc(sizeof *query->sa_query.mad, gfp_mask);
|
||||
if (!query->sa_query.mad) {
|
||||
kfree(query);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
query->callback = callback;
|
||||
query->context = context;
|
||||
|
||||
init_mad(query->sa_query.mad, agent);
|
||||
|
||||
query->sa_query.callback = ib_sa_path_rec_callback;
|
||||
query->sa_query.release = ib_sa_path_rec_release;
|
||||
query->sa_query.port = port;
|
||||
query->sa_query.mad->mad_hdr.method = IB_MGMT_METHOD_GET;
|
||||
query->sa_query.mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_PATH_REC);
|
||||
query->sa_query.mad->sa_hdr.comp_mask = comp_mask;
|
||||
|
||||
ib_pack(path_rec_table, ARRAY_SIZE(path_rec_table),
|
||||
rec, query->sa_query.mad->data);
|
||||
|
||||
*sa_query = &query->sa_query;
|
||||
ret = send_mad(&query->sa_query, timeout_ms);
|
||||
if (ret) {
|
||||
*sa_query = NULL;
|
||||
kfree(query->sa_query.mad);
|
||||
kfree(query);
|
||||
}
|
||||
|
||||
return ret ? ret : query->sa_query.id;
|
||||
}
|
||||
EXPORT_SYMBOL(ib_sa_path_rec_get);
|
||||
|
||||
static void ib_sa_mcmember_rec_callback(struct ib_sa_query *sa_query,
|
||||
int status,
|
||||
struct ib_sa_mad *mad)
|
||||
{
|
||||
struct ib_sa_mcmember_query *query =
|
||||
container_of(sa_query, struct ib_sa_mcmember_query, sa_query);
|
||||
|
||||
if (mad) {
|
||||
struct ib_sa_mcmember_rec rec;
|
||||
|
||||
ib_unpack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table),
|
||||
mad->data, &rec);
|
||||
query->callback(status, &rec, query->context);
|
||||
} else
|
||||
query->callback(status, NULL, query->context);
|
||||
}
|
||||
|
||||
static void ib_sa_mcmember_rec_release(struct ib_sa_query *sa_query)
|
||||
{
|
||||
kfree(sa_query->mad);
|
||||
kfree(container_of(sa_query, struct ib_sa_mcmember_query, sa_query));
|
||||
}
|
||||
|
||||
int ib_sa_mcmember_rec_query(struct ib_device *device, u8 port_num,
|
||||
u8 method,
|
||||
struct ib_sa_mcmember_rec *rec,
|
||||
ib_sa_comp_mask comp_mask,
|
||||
int timeout_ms, int gfp_mask,
|
||||
void (*callback)(int status,
|
||||
struct ib_sa_mcmember_rec *resp,
|
||||
void *context),
|
||||
void *context,
|
||||
struct ib_sa_query **sa_query)
|
||||
{
|
||||
struct ib_sa_mcmember_query *query;
|
||||
struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client);
|
||||
struct ib_sa_port *port = &sa_dev->port[port_num - sa_dev->start_port];
|
||||
struct ib_mad_agent *agent = port->agent;
|
||||
int ret;
|
||||
|
||||
query = kmalloc(sizeof *query, gfp_mask);
|
||||
if (!query)
|
||||
return -ENOMEM;
|
||||
query->sa_query.mad = kmalloc(sizeof *query->sa_query.mad, gfp_mask);
|
||||
if (!query->sa_query.mad) {
|
||||
kfree(query);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
query->callback = callback;
|
||||
query->context = context;
|
||||
|
||||
init_mad(query->sa_query.mad, agent);
|
||||
|
||||
query->sa_query.callback = ib_sa_mcmember_rec_callback;
|
||||
query->sa_query.release = ib_sa_mcmember_rec_release;
|
||||
query->sa_query.port = port;
|
||||
query->sa_query.mad->mad_hdr.method = method;
|
||||
query->sa_query.mad->mad_hdr.attr_id = cpu_to_be16(IB_SA_ATTR_MC_MEMBER_REC);
|
||||
query->sa_query.mad->sa_hdr.comp_mask = comp_mask;
|
||||
|
||||
ib_pack(mcmember_rec_table, ARRAY_SIZE(mcmember_rec_table),
|
||||
rec, query->sa_query.mad->data);
|
||||
|
||||
*sa_query = &query->sa_query;
|
||||
ret = send_mad(&query->sa_query, timeout_ms);
|
||||
if (ret) {
|
||||
*sa_query = NULL;
|
||||
kfree(query->sa_query.mad);
|
||||
kfree(query);
|
||||
}
|
||||
|
||||
return ret ? ret : query->sa_query.id;
|
||||
}
|
||||
EXPORT_SYMBOL(ib_sa_mcmember_rec_query);
|
||||
|
||||
static void send_handler(struct ib_mad_agent *agent,
|
||||
struct ib_mad_send_wc *mad_send_wc)
|
||||
{
|
||||
struct ib_sa_query *query;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&idr_lock, flags);
|
||||
query = idr_find(&query_idr, mad_send_wc->wr_id);
|
||||
spin_unlock_irqrestore(&idr_lock, flags);
|
||||
|
||||
if (!query)
|
||||
return;
|
||||
|
||||
switch (mad_send_wc->status) {
|
||||
case IB_WC_SUCCESS:
|
||||
/* No callback -- already got recv */
|
||||
break;
|
||||
case IB_WC_RESP_TIMEOUT_ERR:
|
||||
query->callback(query, -ETIMEDOUT, NULL);
|
||||
break;
|
||||
case IB_WC_WR_FLUSH_ERR:
|
||||
query->callback(query, -EINTR, NULL);
|
||||
break;
|
||||
default:
|
||||
query->callback(query, -EIO, NULL);
|
||||
break;
|
||||
}
|
||||
|
||||
dma_unmap_single(agent->device->dma_device,
|
||||
pci_unmap_addr(query, mapping),
|
||||
sizeof (struct ib_sa_mad),
|
||||
DMA_TO_DEVICE);
|
||||
kref_put(&query->sm_ah->ref, free_sm_ah);
|
||||
|
||||
query->release(query);
|
||||
|
||||
spin_lock_irqsave(&idr_lock, flags);
|
||||
idr_remove(&query_idr, mad_send_wc->wr_id);
|
||||
spin_unlock_irqrestore(&idr_lock, flags);
|
||||
}
|
||||
|
||||
static void recv_handler(struct ib_mad_agent *mad_agent,
|
||||
struct ib_mad_recv_wc *mad_recv_wc)
|
||||
{
|
||||
struct ib_sa_query *query;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&idr_lock, flags);
|
||||
query = idr_find(&query_idr, mad_recv_wc->wc->wr_id);
|
||||
spin_unlock_irqrestore(&idr_lock, flags);
|
||||
|
||||
if (query) {
|
||||
if (mad_recv_wc->wc->status == IB_WC_SUCCESS)
|
||||
query->callback(query,
|
||||
mad_recv_wc->recv_buf.mad->mad_hdr.status ?
|
||||
-EINVAL : 0,
|
||||
(struct ib_sa_mad *) mad_recv_wc->recv_buf.mad);
|
||||
else
|
||||
query->callback(query, -EIO, NULL);
|
||||
}
|
||||
|
||||
ib_free_recv_mad(mad_recv_wc);
|
||||
}
|
||||
|
||||
static void ib_sa_add_one(struct ib_device *device)
|
||||
{
|
||||
struct ib_sa_device *sa_dev;
|
||||
int s, e, i;
|
||||
|
||||
if (device->node_type == IB_NODE_SWITCH)
|
||||
s = e = 0;
|
||||
else {
|
||||
s = 1;
|
||||
e = device->phys_port_cnt;
|
||||
}
|
||||
|
||||
sa_dev = kmalloc(sizeof *sa_dev +
|
||||
(e - s + 1) * sizeof (struct ib_sa_port),
|
||||
GFP_KERNEL);
|
||||
if (!sa_dev)
|
||||
return;
|
||||
|
||||
sa_dev->start_port = s;
|
||||
sa_dev->end_port = e;
|
||||
|
||||
for (i = 0; i <= e - s; ++i) {
|
||||
sa_dev->port[i].mr = NULL;
|
||||
sa_dev->port[i].sm_ah = NULL;
|
||||
sa_dev->port[i].port_num = i + s;
|
||||
spin_lock_init(&sa_dev->port[i].ah_lock);
|
||||
|
||||
sa_dev->port[i].agent =
|
||||
ib_register_mad_agent(device, i + s, IB_QPT_GSI,
|
||||
NULL, 0, send_handler,
|
||||
recv_handler, sa_dev);
|
||||
if (IS_ERR(sa_dev->port[i].agent))
|
||||
goto err;
|
||||
|
||||
sa_dev->port[i].mr = ib_get_dma_mr(sa_dev->port[i].agent->qp->pd,
|
||||
IB_ACCESS_LOCAL_WRITE);
|
||||
if (IS_ERR(sa_dev->port[i].mr)) {
|
||||
ib_unregister_mad_agent(sa_dev->port[i].agent);
|
||||
goto err;
|
||||
}
|
||||
|
||||
INIT_WORK(&sa_dev->port[i].update_task,
|
||||
update_sm_ah, &sa_dev->port[i]);
|
||||
}
|
||||
|
||||
ib_set_client_data(device, &sa_client, sa_dev);
|
||||
|
||||
/*
|
||||
* We register our event handler after everything is set up,
|
||||
* and then update our cached info after the event handler is
|
||||
* registered to avoid any problems if a port changes state
|
||||
* during our initialization.
|
||||
*/
|
||||
|
||||
INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event);
|
||||
if (ib_register_event_handler(&sa_dev->event_handler))
|
||||
goto err;
|
||||
|
||||
for (i = 0; i <= e - s; ++i)
|
||||
update_sm_ah(&sa_dev->port[i]);
|
||||
|
||||
return;
|
||||
|
||||
err:
|
||||
while (--i >= 0) {
|
||||
ib_dereg_mr(sa_dev->port[i].mr);
|
||||
ib_unregister_mad_agent(sa_dev->port[i].agent);
|
||||
}
|
||||
|
||||
kfree(sa_dev);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
static void ib_sa_remove_one(struct ib_device *device)
|
||||
{
|
||||
struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client);
|
||||
int i;
|
||||
|
||||
if (!sa_dev)
|
||||
return;
|
||||
|
||||
ib_unregister_event_handler(&sa_dev->event_handler);
|
||||
|
||||
for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) {
|
||||
ib_unregister_mad_agent(sa_dev->port[i].agent);
|
||||
kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah);
|
||||
}
|
||||
|
||||
kfree(sa_dev);
|
||||
}
|
||||
|
||||
static int __init ib_sa_init(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
spin_lock_init(&idr_lock);
|
||||
spin_lock_init(&tid_lock);
|
||||
|
||||
get_random_bytes(&tid, sizeof tid);
|
||||
|
||||
ret = ib_register_client(&sa_client);
|
||||
if (ret)
|
||||
printk(KERN_ERR "Couldn't register ib_sa client\n");
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __exit ib_sa_cleanup(void)
|
||||
{
|
||||
ib_unregister_client(&sa_client);
|
||||
}
|
||||
|
||||
module_init(ib_sa_init);
|
||||
module_exit(ib_sa_cleanup);
|
||||
Reference in New Issue
Block a user