mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
26d2177e97
- Create drivers/staging/rdma - Move amso1100 driver to staging/rdma and schedule for deletion - Move ipath driver to staging/rdma and schedule for deletion - Add hfi1 driver to staging/rdma and set TODO for move to regular tree - Initial support for namespaces to be used on RDMA devices - Add RoCE GID table handling to the RDMA core caching code - Infrastructure to support handling of devices with differing read and write scatter gather capabilities - Various iSER updates - Kill off unsafe usage of global mr registrations - Update SRP driver - Misc. mlx4 driver updates - Support for the mr_alloc verb - Support for a netlink interface between kernel and user space cache daemon to speed path record queries and route resolution - Ininitial support for safe hot removal of verbs devices -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJV7v8wAAoJELgmozMOVy/d2dcP/3PXnGFPgFGJODKE6VCZtTvj nooNXRKXjxv470UT5DiAX7SNcBxzzS7Zl/Lj+831H9iNXUyzuH31KtBOAZ3W03vZ yXwCB2caOStSldTRSUUvPe2aIFPnyNmSpC4i6XcJLJMCFijKmxin5pAo8qE44BQU yjhT+wC9P6LL5wZXsn/nFIMLjOFfu0WBFHNp3gs5j59paxlx5VeIAZk16aQZH135 m7YCyicwrS8iyWQl2bEXRMon2vlCHlX2RHmOJ4f/P5I0quNcGF2+d8Yxa+K1VyC5 zcb3OBezz+wZtvh16yhsDfSPqHWirljwID2VzOgRSzTJWvQjju8VkwHtkq6bYoBW egIxGCHcGWsD0R5iBXLYr/tB+BmjbDObSm0AsR4+JvSShkeVA1IpeoO+19162ixE n6CQnk2jCee8KXeIN4PoIKsjRSbIECM0JliWPLoIpuTuEhhpajftlSLgL5hf1dzp HrSy6fXmmoRj7wlTa7DnYIC3X+ffwckB8/t1zMAm2sKnIFUTjtQXF7upNiiyWk4L /T1QEzJ2bLQckQ9yY4v528SvBQwA4Dy1amIQB7SU8+2S//bYdUvhysWPkdKC4oOT WlqS5PFDCI31MvNbbM3rUbMAD8eBAR8ACw9ZpGI/Rffm5FEX5W3LoxA8gfEBRuqt 30ZYFuW8evTL+YQcaV65 =EHLg -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull inifiniband/rdma updates from Doug Ledford: "This is a fairly sizeable set of changes. I've put them through a decent amount of testing prior to sending the pull request due to that. There are still a few fixups that I know are coming, but I wanted to go ahead and get the big, sizable chunk into your hands sooner rather than waiting for those last few fixups. Of note is the fact that this creates what is intended to be a temporary area in the drivers/staging tree specifically for some cleanups and additions that are coming for the RDMA stack. We deprecated two drivers (ipath and amso1100) and are waiting to hear back if we can deprecate another one (ehca). We also put Intel's new hfi1 driver into this area because it needs to be refactored and a transfer library created out of the factored out code, and then it and the qib driver and the soft-roce driver should all be modified to use that library. I expect drivers/staging/rdma to be around for three or four kernel releases and then to go away as all of the work is completed and final deletions of deprecated drivers are done. Summary of changes for 4.3: - Create drivers/staging/rdma - Move amso1100 driver to staging/rdma and schedule for deletion - Move ipath driver to staging/rdma and schedule for deletion - Add hfi1 driver to staging/rdma and set TODO for move to regular tree - Initial support for namespaces to be used on RDMA devices - Add RoCE GID table handling to the RDMA core caching code - Infrastructure to support handling of devices with differing read and write scatter gather capabilities - Various iSER updates - Kill off unsafe usage of global mr registrations - Update SRP driver - Misc mlx4 driver updates - Support for the mr_alloc verb - Support for a netlink interface between kernel and user space cache daemon to speed path record queries and route resolution - Ininitial support for safe hot removal of verbs devices" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (136 commits) IB/ipoib: Suppress warning for send only join failures IB/ipoib: Clean up send-only multicast joins IB/srp: Fix possible protection fault IB/core: Move SM class defines from ib_mad.h to ib_smi.h IB/core: Remove unnecessary defines from ib_mad.h IB/hfi1: Add PSM2 user space header to header_install IB/hfi1: Add CSRs for CONFIG_SDMA_VERBOSITY mlx5: Fix incorrect wc pkey_index assignment for GSI messages IB/mlx5: avoid destroying a NULL mr in reg_user_mr error flow IB/uverbs: reject invalid or unknown opcodes IB/cxgb4: Fix if statement in pick_local_ip6adddrs IB/sa: Fix rdma netlink message flags IB/ucma: HW Device hot-removal support IB/mlx4_ib: Disassociate support IB/uverbs: Enable device removal when there are active user space applications IB/uverbs: Explicitly pass ib_dev to uverbs commands IB/uverbs: Fix race between ib_uverbs_open and remove_one IB/uverbs: Fix reference counting usage of event files IB/core: Make ib_dealloc_pd return void IB/srp: Create an insecure all physical rkey only if needed ...
3026 lines
87 KiB
C
3026 lines
87 KiB
C
/*
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* Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2004 Infinicon Corporation. All rights reserved.
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* Copyright (c) 2004 Intel Corporation. All rights reserved.
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* Copyright (c) 2004 Topspin Corporation. All rights reserved.
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* Copyright (c) 2004 Voltaire Corporation. All rights reserved.
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2005, 2006, 2007 Cisco Systems. 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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#if !defined(IB_VERBS_H)
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#define IB_VERBS_H
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#include <linux/types.h>
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#include <linux/device.h>
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#include <linux/mm.h>
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#include <linux/dma-mapping.h>
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#include <linux/kref.h>
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#include <linux/list.h>
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#include <linux/rwsem.h>
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#include <linux/scatterlist.h>
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#include <linux/workqueue.h>
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#include <linux/socket.h>
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#include <uapi/linux/if_ether.h>
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#include <linux/atomic.h>
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#include <linux/mmu_notifier.h>
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#include <asm/uaccess.h>
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extern struct workqueue_struct *ib_wq;
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union ib_gid {
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u8 raw[16];
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struct {
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__be64 subnet_prefix;
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__be64 interface_id;
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} global;
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};
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extern union ib_gid zgid;
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struct ib_gid_attr {
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struct net_device *ndev;
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};
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enum rdma_node_type {
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/* IB values map to NodeInfo:NodeType. */
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RDMA_NODE_IB_CA = 1,
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RDMA_NODE_IB_SWITCH,
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RDMA_NODE_IB_ROUTER,
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RDMA_NODE_RNIC,
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RDMA_NODE_USNIC,
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RDMA_NODE_USNIC_UDP,
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};
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enum rdma_transport_type {
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RDMA_TRANSPORT_IB,
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RDMA_TRANSPORT_IWARP,
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RDMA_TRANSPORT_USNIC,
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RDMA_TRANSPORT_USNIC_UDP
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};
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enum rdma_protocol_type {
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RDMA_PROTOCOL_IB,
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RDMA_PROTOCOL_IBOE,
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RDMA_PROTOCOL_IWARP,
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RDMA_PROTOCOL_USNIC_UDP
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};
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__attribute_const__ enum rdma_transport_type
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rdma_node_get_transport(enum rdma_node_type node_type);
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enum rdma_link_layer {
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IB_LINK_LAYER_UNSPECIFIED,
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IB_LINK_LAYER_INFINIBAND,
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IB_LINK_LAYER_ETHERNET,
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};
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enum ib_device_cap_flags {
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IB_DEVICE_RESIZE_MAX_WR = 1,
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IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
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IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
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IB_DEVICE_RAW_MULTI = (1<<3),
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IB_DEVICE_AUTO_PATH_MIG = (1<<4),
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IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
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IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
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IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
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IB_DEVICE_SHUTDOWN_PORT = (1<<8),
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IB_DEVICE_INIT_TYPE = (1<<9),
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IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
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IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
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IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
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IB_DEVICE_SRQ_RESIZE = (1<<13),
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IB_DEVICE_N_NOTIFY_CQ = (1<<14),
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IB_DEVICE_LOCAL_DMA_LKEY = (1<<15),
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IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */
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IB_DEVICE_MEM_WINDOW = (1<<17),
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/*
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* Devices should set IB_DEVICE_UD_IP_SUM if they support
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* insertion of UDP and TCP checksum on outgoing UD IPoIB
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* messages and can verify the validity of checksum for
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* incoming messages. Setting this flag implies that the
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* IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
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*/
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IB_DEVICE_UD_IP_CSUM = (1<<18),
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IB_DEVICE_UD_TSO = (1<<19),
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IB_DEVICE_XRC = (1<<20),
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IB_DEVICE_MEM_MGT_EXTENSIONS = (1<<21),
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IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22),
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IB_DEVICE_MEM_WINDOW_TYPE_2A = (1<<23),
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IB_DEVICE_MEM_WINDOW_TYPE_2B = (1<<24),
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IB_DEVICE_MANAGED_FLOW_STEERING = (1<<29),
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IB_DEVICE_SIGNATURE_HANDOVER = (1<<30),
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IB_DEVICE_ON_DEMAND_PAGING = (1<<31),
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};
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enum ib_signature_prot_cap {
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IB_PROT_T10DIF_TYPE_1 = 1,
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IB_PROT_T10DIF_TYPE_2 = 1 << 1,
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IB_PROT_T10DIF_TYPE_3 = 1 << 2,
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};
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enum ib_signature_guard_cap {
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IB_GUARD_T10DIF_CRC = 1,
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IB_GUARD_T10DIF_CSUM = 1 << 1,
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};
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enum ib_atomic_cap {
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IB_ATOMIC_NONE,
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IB_ATOMIC_HCA,
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IB_ATOMIC_GLOB
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};
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enum ib_odp_general_cap_bits {
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IB_ODP_SUPPORT = 1 << 0,
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};
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enum ib_odp_transport_cap_bits {
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IB_ODP_SUPPORT_SEND = 1 << 0,
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IB_ODP_SUPPORT_RECV = 1 << 1,
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IB_ODP_SUPPORT_WRITE = 1 << 2,
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IB_ODP_SUPPORT_READ = 1 << 3,
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IB_ODP_SUPPORT_ATOMIC = 1 << 4,
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};
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struct ib_odp_caps {
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uint64_t general_caps;
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struct {
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uint32_t rc_odp_caps;
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uint32_t uc_odp_caps;
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uint32_t ud_odp_caps;
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} per_transport_caps;
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};
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enum ib_cq_creation_flags {
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IB_CQ_FLAGS_TIMESTAMP_COMPLETION = 1 << 0,
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};
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struct ib_cq_init_attr {
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unsigned int cqe;
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int comp_vector;
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u32 flags;
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};
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struct ib_device_attr {
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u64 fw_ver;
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__be64 sys_image_guid;
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u64 max_mr_size;
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u64 page_size_cap;
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u32 vendor_id;
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u32 vendor_part_id;
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u32 hw_ver;
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int max_qp;
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int max_qp_wr;
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int device_cap_flags;
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int max_sge;
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int max_sge_rd;
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int max_cq;
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int max_cqe;
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int max_mr;
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int max_pd;
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int max_qp_rd_atom;
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int max_ee_rd_atom;
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int max_res_rd_atom;
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int max_qp_init_rd_atom;
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int max_ee_init_rd_atom;
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enum ib_atomic_cap atomic_cap;
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enum ib_atomic_cap masked_atomic_cap;
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int max_ee;
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int max_rdd;
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int max_mw;
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int max_raw_ipv6_qp;
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int max_raw_ethy_qp;
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int max_mcast_grp;
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int max_mcast_qp_attach;
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int max_total_mcast_qp_attach;
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int max_ah;
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int max_fmr;
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int max_map_per_fmr;
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int max_srq;
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int max_srq_wr;
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int max_srq_sge;
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unsigned int max_fast_reg_page_list_len;
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u16 max_pkeys;
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u8 local_ca_ack_delay;
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int sig_prot_cap;
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int sig_guard_cap;
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struct ib_odp_caps odp_caps;
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uint64_t timestamp_mask;
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uint64_t hca_core_clock; /* in KHZ */
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};
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enum ib_mtu {
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IB_MTU_256 = 1,
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IB_MTU_512 = 2,
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IB_MTU_1024 = 3,
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IB_MTU_2048 = 4,
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IB_MTU_4096 = 5
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};
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static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
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{
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switch (mtu) {
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case IB_MTU_256: return 256;
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case IB_MTU_512: return 512;
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case IB_MTU_1024: return 1024;
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case IB_MTU_2048: return 2048;
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case IB_MTU_4096: return 4096;
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default: return -1;
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}
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}
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enum ib_port_state {
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IB_PORT_NOP = 0,
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IB_PORT_DOWN = 1,
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IB_PORT_INIT = 2,
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IB_PORT_ARMED = 3,
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IB_PORT_ACTIVE = 4,
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IB_PORT_ACTIVE_DEFER = 5
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};
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enum ib_port_cap_flags {
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IB_PORT_SM = 1 << 1,
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IB_PORT_NOTICE_SUP = 1 << 2,
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IB_PORT_TRAP_SUP = 1 << 3,
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IB_PORT_OPT_IPD_SUP = 1 << 4,
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IB_PORT_AUTO_MIGR_SUP = 1 << 5,
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IB_PORT_SL_MAP_SUP = 1 << 6,
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IB_PORT_MKEY_NVRAM = 1 << 7,
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IB_PORT_PKEY_NVRAM = 1 << 8,
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IB_PORT_LED_INFO_SUP = 1 << 9,
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IB_PORT_SM_DISABLED = 1 << 10,
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IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
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IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
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IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
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IB_PORT_CM_SUP = 1 << 16,
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IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
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IB_PORT_REINIT_SUP = 1 << 18,
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IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
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IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
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IB_PORT_DR_NOTICE_SUP = 1 << 21,
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IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
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IB_PORT_BOOT_MGMT_SUP = 1 << 23,
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IB_PORT_LINK_LATENCY_SUP = 1 << 24,
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IB_PORT_CLIENT_REG_SUP = 1 << 25,
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IB_PORT_IP_BASED_GIDS = 1 << 26,
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};
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enum ib_port_width {
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IB_WIDTH_1X = 1,
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IB_WIDTH_4X = 2,
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IB_WIDTH_8X = 4,
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IB_WIDTH_12X = 8
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};
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static inline int ib_width_enum_to_int(enum ib_port_width width)
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{
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switch (width) {
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case IB_WIDTH_1X: return 1;
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case IB_WIDTH_4X: return 4;
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case IB_WIDTH_8X: return 8;
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case IB_WIDTH_12X: return 12;
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default: return -1;
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}
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}
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enum ib_port_speed {
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IB_SPEED_SDR = 1,
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IB_SPEED_DDR = 2,
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IB_SPEED_QDR = 4,
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IB_SPEED_FDR10 = 8,
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IB_SPEED_FDR = 16,
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IB_SPEED_EDR = 32
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};
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struct ib_protocol_stats {
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/* TBD... */
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};
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struct iw_protocol_stats {
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u64 ipInReceives;
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u64 ipInHdrErrors;
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u64 ipInTooBigErrors;
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u64 ipInNoRoutes;
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u64 ipInAddrErrors;
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u64 ipInUnknownProtos;
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u64 ipInTruncatedPkts;
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u64 ipInDiscards;
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u64 ipInDelivers;
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u64 ipOutForwDatagrams;
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u64 ipOutRequests;
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u64 ipOutDiscards;
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u64 ipOutNoRoutes;
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u64 ipReasmTimeout;
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u64 ipReasmReqds;
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u64 ipReasmOKs;
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u64 ipReasmFails;
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u64 ipFragOKs;
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u64 ipFragFails;
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u64 ipFragCreates;
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u64 ipInMcastPkts;
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u64 ipOutMcastPkts;
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u64 ipInBcastPkts;
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u64 ipOutBcastPkts;
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u64 tcpRtoAlgorithm;
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u64 tcpRtoMin;
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u64 tcpRtoMax;
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u64 tcpMaxConn;
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u64 tcpActiveOpens;
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u64 tcpPassiveOpens;
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u64 tcpAttemptFails;
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u64 tcpEstabResets;
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u64 tcpCurrEstab;
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u64 tcpInSegs;
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u64 tcpOutSegs;
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u64 tcpRetransSegs;
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u64 tcpInErrs;
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u64 tcpOutRsts;
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};
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union rdma_protocol_stats {
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struct ib_protocol_stats ib;
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struct iw_protocol_stats iw;
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};
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/* Define bits for the various functionality this port needs to be supported by
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* the core.
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*/
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/* Management 0x00000FFF */
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#define RDMA_CORE_CAP_IB_MAD 0x00000001
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#define RDMA_CORE_CAP_IB_SMI 0x00000002
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#define RDMA_CORE_CAP_IB_CM 0x00000004
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#define RDMA_CORE_CAP_IW_CM 0x00000008
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#define RDMA_CORE_CAP_IB_SA 0x00000010
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#define RDMA_CORE_CAP_OPA_MAD 0x00000020
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/* Address format 0x000FF000 */
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#define RDMA_CORE_CAP_AF_IB 0x00001000
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#define RDMA_CORE_CAP_ETH_AH 0x00002000
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/* Protocol 0xFFF00000 */
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#define RDMA_CORE_CAP_PROT_IB 0x00100000
|
|
#define RDMA_CORE_CAP_PROT_ROCE 0x00200000
|
|
#define RDMA_CORE_CAP_PROT_IWARP 0x00400000
|
|
|
|
#define RDMA_CORE_PORT_IBA_IB (RDMA_CORE_CAP_PROT_IB \
|
|
| RDMA_CORE_CAP_IB_MAD \
|
|
| RDMA_CORE_CAP_IB_SMI \
|
|
| RDMA_CORE_CAP_IB_CM \
|
|
| RDMA_CORE_CAP_IB_SA \
|
|
| RDMA_CORE_CAP_AF_IB)
|
|
#define RDMA_CORE_PORT_IBA_ROCE (RDMA_CORE_CAP_PROT_ROCE \
|
|
| RDMA_CORE_CAP_IB_MAD \
|
|
| RDMA_CORE_CAP_IB_CM \
|
|
| RDMA_CORE_CAP_AF_IB \
|
|
| RDMA_CORE_CAP_ETH_AH)
|
|
#define RDMA_CORE_PORT_IWARP (RDMA_CORE_CAP_PROT_IWARP \
|
|
| RDMA_CORE_CAP_IW_CM)
|
|
#define RDMA_CORE_PORT_INTEL_OPA (RDMA_CORE_PORT_IBA_IB \
|
|
| RDMA_CORE_CAP_OPA_MAD)
|
|
|
|
struct ib_port_attr {
|
|
enum ib_port_state state;
|
|
enum ib_mtu max_mtu;
|
|
enum ib_mtu active_mtu;
|
|
int gid_tbl_len;
|
|
u32 port_cap_flags;
|
|
u32 max_msg_sz;
|
|
u32 bad_pkey_cntr;
|
|
u32 qkey_viol_cntr;
|
|
u16 pkey_tbl_len;
|
|
u16 lid;
|
|
u16 sm_lid;
|
|
u8 lmc;
|
|
u8 max_vl_num;
|
|
u8 sm_sl;
|
|
u8 subnet_timeout;
|
|
u8 init_type_reply;
|
|
u8 active_width;
|
|
u8 active_speed;
|
|
u8 phys_state;
|
|
};
|
|
|
|
enum ib_device_modify_flags {
|
|
IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
|
|
IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
|
|
};
|
|
|
|
struct ib_device_modify {
|
|
u64 sys_image_guid;
|
|
char node_desc[64];
|
|
};
|
|
|
|
enum ib_port_modify_flags {
|
|
IB_PORT_SHUTDOWN = 1,
|
|
IB_PORT_INIT_TYPE = (1<<2),
|
|
IB_PORT_RESET_QKEY_CNTR = (1<<3)
|
|
};
|
|
|
|
struct ib_port_modify {
|
|
u32 set_port_cap_mask;
|
|
u32 clr_port_cap_mask;
|
|
u8 init_type;
|
|
};
|
|
|
|
enum ib_event_type {
|
|
IB_EVENT_CQ_ERR,
|
|
IB_EVENT_QP_FATAL,
|
|
IB_EVENT_QP_REQ_ERR,
|
|
IB_EVENT_QP_ACCESS_ERR,
|
|
IB_EVENT_COMM_EST,
|
|
IB_EVENT_SQ_DRAINED,
|
|
IB_EVENT_PATH_MIG,
|
|
IB_EVENT_PATH_MIG_ERR,
|
|
IB_EVENT_DEVICE_FATAL,
|
|
IB_EVENT_PORT_ACTIVE,
|
|
IB_EVENT_PORT_ERR,
|
|
IB_EVENT_LID_CHANGE,
|
|
IB_EVENT_PKEY_CHANGE,
|
|
IB_EVENT_SM_CHANGE,
|
|
IB_EVENT_SRQ_ERR,
|
|
IB_EVENT_SRQ_LIMIT_REACHED,
|
|
IB_EVENT_QP_LAST_WQE_REACHED,
|
|
IB_EVENT_CLIENT_REREGISTER,
|
|
IB_EVENT_GID_CHANGE,
|
|
};
|
|
|
|
__attribute_const__ const char *ib_event_msg(enum ib_event_type event);
|
|
|
|
struct ib_event {
|
|
struct ib_device *device;
|
|
union {
|
|
struct ib_cq *cq;
|
|
struct ib_qp *qp;
|
|
struct ib_srq *srq;
|
|
u8 port_num;
|
|
} element;
|
|
enum ib_event_type event;
|
|
};
|
|
|
|
struct ib_event_handler {
|
|
struct ib_device *device;
|
|
void (*handler)(struct ib_event_handler *, struct ib_event *);
|
|
struct list_head list;
|
|
};
|
|
|
|
#define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
|
|
do { \
|
|
(_ptr)->device = _device; \
|
|
(_ptr)->handler = _handler; \
|
|
INIT_LIST_HEAD(&(_ptr)->list); \
|
|
} while (0)
|
|
|
|
struct ib_global_route {
|
|
union ib_gid dgid;
|
|
u32 flow_label;
|
|
u8 sgid_index;
|
|
u8 hop_limit;
|
|
u8 traffic_class;
|
|
};
|
|
|
|
struct ib_grh {
|
|
__be32 version_tclass_flow;
|
|
__be16 paylen;
|
|
u8 next_hdr;
|
|
u8 hop_limit;
|
|
union ib_gid sgid;
|
|
union ib_gid dgid;
|
|
};
|
|
|
|
enum {
|
|
IB_MULTICAST_QPN = 0xffffff
|
|
};
|
|
|
|
#define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
|
|
|
|
enum ib_ah_flags {
|
|
IB_AH_GRH = 1
|
|
};
|
|
|
|
enum ib_rate {
|
|
IB_RATE_PORT_CURRENT = 0,
|
|
IB_RATE_2_5_GBPS = 2,
|
|
IB_RATE_5_GBPS = 5,
|
|
IB_RATE_10_GBPS = 3,
|
|
IB_RATE_20_GBPS = 6,
|
|
IB_RATE_30_GBPS = 4,
|
|
IB_RATE_40_GBPS = 7,
|
|
IB_RATE_60_GBPS = 8,
|
|
IB_RATE_80_GBPS = 9,
|
|
IB_RATE_120_GBPS = 10,
|
|
IB_RATE_14_GBPS = 11,
|
|
IB_RATE_56_GBPS = 12,
|
|
IB_RATE_112_GBPS = 13,
|
|
IB_RATE_168_GBPS = 14,
|
|
IB_RATE_25_GBPS = 15,
|
|
IB_RATE_100_GBPS = 16,
|
|
IB_RATE_200_GBPS = 17,
|
|
IB_RATE_300_GBPS = 18
|
|
};
|
|
|
|
/**
|
|
* ib_rate_to_mult - Convert the IB rate enum to a multiple of the
|
|
* base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
|
|
* converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
|
|
* @rate: rate to convert.
|
|
*/
|
|
__attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
|
|
|
|
/**
|
|
* ib_rate_to_mbps - Convert the IB rate enum to Mbps.
|
|
* For example, IB_RATE_2_5_GBPS will be converted to 2500.
|
|
* @rate: rate to convert.
|
|
*/
|
|
__attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
|
|
|
|
|
|
/**
|
|
* enum ib_mr_type - memory region type
|
|
* @IB_MR_TYPE_MEM_REG: memory region that is used for
|
|
* normal registration
|
|
* @IB_MR_TYPE_SIGNATURE: memory region that is used for
|
|
* signature operations (data-integrity
|
|
* capable regions)
|
|
*/
|
|
enum ib_mr_type {
|
|
IB_MR_TYPE_MEM_REG,
|
|
IB_MR_TYPE_SIGNATURE,
|
|
};
|
|
|
|
/**
|
|
* Signature types
|
|
* IB_SIG_TYPE_NONE: Unprotected.
|
|
* IB_SIG_TYPE_T10_DIF: Type T10-DIF
|
|
*/
|
|
enum ib_signature_type {
|
|
IB_SIG_TYPE_NONE,
|
|
IB_SIG_TYPE_T10_DIF,
|
|
};
|
|
|
|
/**
|
|
* Signature T10-DIF block-guard types
|
|
* IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
|
|
* IB_T10DIF_CSUM: Corresponds to IP checksum rules.
|
|
*/
|
|
enum ib_t10_dif_bg_type {
|
|
IB_T10DIF_CRC,
|
|
IB_T10DIF_CSUM
|
|
};
|
|
|
|
/**
|
|
* struct ib_t10_dif_domain - Parameters specific for T10-DIF
|
|
* domain.
|
|
* @bg_type: T10-DIF block guard type (CRC|CSUM)
|
|
* @pi_interval: protection information interval.
|
|
* @bg: seed of guard computation.
|
|
* @app_tag: application tag of guard block
|
|
* @ref_tag: initial guard block reference tag.
|
|
* @ref_remap: Indicate wethear the reftag increments each block
|
|
* @app_escape: Indicate to skip block check if apptag=0xffff
|
|
* @ref_escape: Indicate to skip block check if reftag=0xffffffff
|
|
* @apptag_check_mask: check bitmask of application tag.
|
|
*/
|
|
struct ib_t10_dif_domain {
|
|
enum ib_t10_dif_bg_type bg_type;
|
|
u16 pi_interval;
|
|
u16 bg;
|
|
u16 app_tag;
|
|
u32 ref_tag;
|
|
bool ref_remap;
|
|
bool app_escape;
|
|
bool ref_escape;
|
|
u16 apptag_check_mask;
|
|
};
|
|
|
|
/**
|
|
* struct ib_sig_domain - Parameters for signature domain
|
|
* @sig_type: specific signauture type
|
|
* @sig: union of all signature domain attributes that may
|
|
* be used to set domain layout.
|
|
*/
|
|
struct ib_sig_domain {
|
|
enum ib_signature_type sig_type;
|
|
union {
|
|
struct ib_t10_dif_domain dif;
|
|
} sig;
|
|
};
|
|
|
|
/**
|
|
* struct ib_sig_attrs - Parameters for signature handover operation
|
|
* @check_mask: bitmask for signature byte check (8 bytes)
|
|
* @mem: memory domain layout desciptor.
|
|
* @wire: wire domain layout desciptor.
|
|
*/
|
|
struct ib_sig_attrs {
|
|
u8 check_mask;
|
|
struct ib_sig_domain mem;
|
|
struct ib_sig_domain wire;
|
|
};
|
|
|
|
enum ib_sig_err_type {
|
|
IB_SIG_BAD_GUARD,
|
|
IB_SIG_BAD_REFTAG,
|
|
IB_SIG_BAD_APPTAG,
|
|
};
|
|
|
|
/**
|
|
* struct ib_sig_err - signature error descriptor
|
|
*/
|
|
struct ib_sig_err {
|
|
enum ib_sig_err_type err_type;
|
|
u32 expected;
|
|
u32 actual;
|
|
u64 sig_err_offset;
|
|
u32 key;
|
|
};
|
|
|
|
enum ib_mr_status_check {
|
|
IB_MR_CHECK_SIG_STATUS = 1,
|
|
};
|
|
|
|
/**
|
|
* struct ib_mr_status - Memory region status container
|
|
*
|
|
* @fail_status: Bitmask of MR checks status. For each
|
|
* failed check a corresponding status bit is set.
|
|
* @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
|
|
* failure.
|
|
*/
|
|
struct ib_mr_status {
|
|
u32 fail_status;
|
|
struct ib_sig_err sig_err;
|
|
};
|
|
|
|
/**
|
|
* mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
|
|
* enum.
|
|
* @mult: multiple to convert.
|
|
*/
|
|
__attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
|
|
|
|
struct ib_ah_attr {
|
|
struct ib_global_route grh;
|
|
u16 dlid;
|
|
u8 sl;
|
|
u8 src_path_bits;
|
|
u8 static_rate;
|
|
u8 ah_flags;
|
|
u8 port_num;
|
|
u8 dmac[ETH_ALEN];
|
|
u16 vlan_id;
|
|
};
|
|
|
|
enum ib_wc_status {
|
|
IB_WC_SUCCESS,
|
|
IB_WC_LOC_LEN_ERR,
|
|
IB_WC_LOC_QP_OP_ERR,
|
|
IB_WC_LOC_EEC_OP_ERR,
|
|
IB_WC_LOC_PROT_ERR,
|
|
IB_WC_WR_FLUSH_ERR,
|
|
IB_WC_MW_BIND_ERR,
|
|
IB_WC_BAD_RESP_ERR,
|
|
IB_WC_LOC_ACCESS_ERR,
|
|
IB_WC_REM_INV_REQ_ERR,
|
|
IB_WC_REM_ACCESS_ERR,
|
|
IB_WC_REM_OP_ERR,
|
|
IB_WC_RETRY_EXC_ERR,
|
|
IB_WC_RNR_RETRY_EXC_ERR,
|
|
IB_WC_LOC_RDD_VIOL_ERR,
|
|
IB_WC_REM_INV_RD_REQ_ERR,
|
|
IB_WC_REM_ABORT_ERR,
|
|
IB_WC_INV_EECN_ERR,
|
|
IB_WC_INV_EEC_STATE_ERR,
|
|
IB_WC_FATAL_ERR,
|
|
IB_WC_RESP_TIMEOUT_ERR,
|
|
IB_WC_GENERAL_ERR
|
|
};
|
|
|
|
__attribute_const__ const char *ib_wc_status_msg(enum ib_wc_status status);
|
|
|
|
enum ib_wc_opcode {
|
|
IB_WC_SEND,
|
|
IB_WC_RDMA_WRITE,
|
|
IB_WC_RDMA_READ,
|
|
IB_WC_COMP_SWAP,
|
|
IB_WC_FETCH_ADD,
|
|
IB_WC_BIND_MW,
|
|
IB_WC_LSO,
|
|
IB_WC_LOCAL_INV,
|
|
IB_WC_FAST_REG_MR,
|
|
IB_WC_MASKED_COMP_SWAP,
|
|
IB_WC_MASKED_FETCH_ADD,
|
|
/*
|
|
* Set value of IB_WC_RECV so consumers can test if a completion is a
|
|
* receive by testing (opcode & IB_WC_RECV).
|
|
*/
|
|
IB_WC_RECV = 1 << 7,
|
|
IB_WC_RECV_RDMA_WITH_IMM
|
|
};
|
|
|
|
enum ib_wc_flags {
|
|
IB_WC_GRH = 1,
|
|
IB_WC_WITH_IMM = (1<<1),
|
|
IB_WC_WITH_INVALIDATE = (1<<2),
|
|
IB_WC_IP_CSUM_OK = (1<<3),
|
|
IB_WC_WITH_SMAC = (1<<4),
|
|
IB_WC_WITH_VLAN = (1<<5),
|
|
};
|
|
|
|
struct ib_wc {
|
|
u64 wr_id;
|
|
enum ib_wc_status status;
|
|
enum ib_wc_opcode opcode;
|
|
u32 vendor_err;
|
|
u32 byte_len;
|
|
struct ib_qp *qp;
|
|
union {
|
|
__be32 imm_data;
|
|
u32 invalidate_rkey;
|
|
} ex;
|
|
u32 src_qp;
|
|
int wc_flags;
|
|
u16 pkey_index;
|
|
u16 slid;
|
|
u8 sl;
|
|
u8 dlid_path_bits;
|
|
u8 port_num; /* valid only for DR SMPs on switches */
|
|
u8 smac[ETH_ALEN];
|
|
u16 vlan_id;
|
|
};
|
|
|
|
enum ib_cq_notify_flags {
|
|
IB_CQ_SOLICITED = 1 << 0,
|
|
IB_CQ_NEXT_COMP = 1 << 1,
|
|
IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
|
|
IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
|
|
};
|
|
|
|
enum ib_srq_type {
|
|
IB_SRQT_BASIC,
|
|
IB_SRQT_XRC
|
|
};
|
|
|
|
enum ib_srq_attr_mask {
|
|
IB_SRQ_MAX_WR = 1 << 0,
|
|
IB_SRQ_LIMIT = 1 << 1,
|
|
};
|
|
|
|
struct ib_srq_attr {
|
|
u32 max_wr;
|
|
u32 max_sge;
|
|
u32 srq_limit;
|
|
};
|
|
|
|
struct ib_srq_init_attr {
|
|
void (*event_handler)(struct ib_event *, void *);
|
|
void *srq_context;
|
|
struct ib_srq_attr attr;
|
|
enum ib_srq_type srq_type;
|
|
|
|
union {
|
|
struct {
|
|
struct ib_xrcd *xrcd;
|
|
struct ib_cq *cq;
|
|
} xrc;
|
|
} ext;
|
|
};
|
|
|
|
struct ib_qp_cap {
|
|
u32 max_send_wr;
|
|
u32 max_recv_wr;
|
|
u32 max_send_sge;
|
|
u32 max_recv_sge;
|
|
u32 max_inline_data;
|
|
};
|
|
|
|
enum ib_sig_type {
|
|
IB_SIGNAL_ALL_WR,
|
|
IB_SIGNAL_REQ_WR
|
|
};
|
|
|
|
enum ib_qp_type {
|
|
/*
|
|
* IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
|
|
* here (and in that order) since the MAD layer uses them as
|
|
* indices into a 2-entry table.
|
|
*/
|
|
IB_QPT_SMI,
|
|
IB_QPT_GSI,
|
|
|
|
IB_QPT_RC,
|
|
IB_QPT_UC,
|
|
IB_QPT_UD,
|
|
IB_QPT_RAW_IPV6,
|
|
IB_QPT_RAW_ETHERTYPE,
|
|
IB_QPT_RAW_PACKET = 8,
|
|
IB_QPT_XRC_INI = 9,
|
|
IB_QPT_XRC_TGT,
|
|
IB_QPT_MAX,
|
|
/* Reserve a range for qp types internal to the low level driver.
|
|
* These qp types will not be visible at the IB core layer, so the
|
|
* IB_QPT_MAX usages should not be affected in the core layer
|
|
*/
|
|
IB_QPT_RESERVED1 = 0x1000,
|
|
IB_QPT_RESERVED2,
|
|
IB_QPT_RESERVED3,
|
|
IB_QPT_RESERVED4,
|
|
IB_QPT_RESERVED5,
|
|
IB_QPT_RESERVED6,
|
|
IB_QPT_RESERVED7,
|
|
IB_QPT_RESERVED8,
|
|
IB_QPT_RESERVED9,
|
|
IB_QPT_RESERVED10,
|
|
};
|
|
|
|
enum ib_qp_create_flags {
|
|
IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
|
|
IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
|
|
IB_QP_CREATE_NETIF_QP = 1 << 5,
|
|
IB_QP_CREATE_SIGNATURE_EN = 1 << 6,
|
|
IB_QP_CREATE_USE_GFP_NOIO = 1 << 7,
|
|
/* reserve bits 26-31 for low level drivers' internal use */
|
|
IB_QP_CREATE_RESERVED_START = 1 << 26,
|
|
IB_QP_CREATE_RESERVED_END = 1 << 31,
|
|
};
|
|
|
|
|
|
/*
|
|
* Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
|
|
* callback to destroy the passed in QP.
|
|
*/
|
|
|
|
struct ib_qp_init_attr {
|
|
void (*event_handler)(struct ib_event *, void *);
|
|
void *qp_context;
|
|
struct ib_cq *send_cq;
|
|
struct ib_cq *recv_cq;
|
|
struct ib_srq *srq;
|
|
struct ib_xrcd *xrcd; /* XRC TGT QPs only */
|
|
struct ib_qp_cap cap;
|
|
enum ib_sig_type sq_sig_type;
|
|
enum ib_qp_type qp_type;
|
|
enum ib_qp_create_flags create_flags;
|
|
u8 port_num; /* special QP types only */
|
|
};
|
|
|
|
struct ib_qp_open_attr {
|
|
void (*event_handler)(struct ib_event *, void *);
|
|
void *qp_context;
|
|
u32 qp_num;
|
|
enum ib_qp_type qp_type;
|
|
};
|
|
|
|
enum ib_rnr_timeout {
|
|
IB_RNR_TIMER_655_36 = 0,
|
|
IB_RNR_TIMER_000_01 = 1,
|
|
IB_RNR_TIMER_000_02 = 2,
|
|
IB_RNR_TIMER_000_03 = 3,
|
|
IB_RNR_TIMER_000_04 = 4,
|
|
IB_RNR_TIMER_000_06 = 5,
|
|
IB_RNR_TIMER_000_08 = 6,
|
|
IB_RNR_TIMER_000_12 = 7,
|
|
IB_RNR_TIMER_000_16 = 8,
|
|
IB_RNR_TIMER_000_24 = 9,
|
|
IB_RNR_TIMER_000_32 = 10,
|
|
IB_RNR_TIMER_000_48 = 11,
|
|
IB_RNR_TIMER_000_64 = 12,
|
|
IB_RNR_TIMER_000_96 = 13,
|
|
IB_RNR_TIMER_001_28 = 14,
|
|
IB_RNR_TIMER_001_92 = 15,
|
|
IB_RNR_TIMER_002_56 = 16,
|
|
IB_RNR_TIMER_003_84 = 17,
|
|
IB_RNR_TIMER_005_12 = 18,
|
|
IB_RNR_TIMER_007_68 = 19,
|
|
IB_RNR_TIMER_010_24 = 20,
|
|
IB_RNR_TIMER_015_36 = 21,
|
|
IB_RNR_TIMER_020_48 = 22,
|
|
IB_RNR_TIMER_030_72 = 23,
|
|
IB_RNR_TIMER_040_96 = 24,
|
|
IB_RNR_TIMER_061_44 = 25,
|
|
IB_RNR_TIMER_081_92 = 26,
|
|
IB_RNR_TIMER_122_88 = 27,
|
|
IB_RNR_TIMER_163_84 = 28,
|
|
IB_RNR_TIMER_245_76 = 29,
|
|
IB_RNR_TIMER_327_68 = 30,
|
|
IB_RNR_TIMER_491_52 = 31
|
|
};
|
|
|
|
enum ib_qp_attr_mask {
|
|
IB_QP_STATE = 1,
|
|
IB_QP_CUR_STATE = (1<<1),
|
|
IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
|
|
IB_QP_ACCESS_FLAGS = (1<<3),
|
|
IB_QP_PKEY_INDEX = (1<<4),
|
|
IB_QP_PORT = (1<<5),
|
|
IB_QP_QKEY = (1<<6),
|
|
IB_QP_AV = (1<<7),
|
|
IB_QP_PATH_MTU = (1<<8),
|
|
IB_QP_TIMEOUT = (1<<9),
|
|
IB_QP_RETRY_CNT = (1<<10),
|
|
IB_QP_RNR_RETRY = (1<<11),
|
|
IB_QP_RQ_PSN = (1<<12),
|
|
IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
|
|
IB_QP_ALT_PATH = (1<<14),
|
|
IB_QP_MIN_RNR_TIMER = (1<<15),
|
|
IB_QP_SQ_PSN = (1<<16),
|
|
IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
|
|
IB_QP_PATH_MIG_STATE = (1<<18),
|
|
IB_QP_CAP = (1<<19),
|
|
IB_QP_DEST_QPN = (1<<20),
|
|
IB_QP_SMAC = (1<<21),
|
|
IB_QP_ALT_SMAC = (1<<22),
|
|
IB_QP_VID = (1<<23),
|
|
IB_QP_ALT_VID = (1<<24),
|
|
};
|
|
|
|
enum ib_qp_state {
|
|
IB_QPS_RESET,
|
|
IB_QPS_INIT,
|
|
IB_QPS_RTR,
|
|
IB_QPS_RTS,
|
|
IB_QPS_SQD,
|
|
IB_QPS_SQE,
|
|
IB_QPS_ERR
|
|
};
|
|
|
|
enum ib_mig_state {
|
|
IB_MIG_MIGRATED,
|
|
IB_MIG_REARM,
|
|
IB_MIG_ARMED
|
|
};
|
|
|
|
enum ib_mw_type {
|
|
IB_MW_TYPE_1 = 1,
|
|
IB_MW_TYPE_2 = 2
|
|
};
|
|
|
|
struct ib_qp_attr {
|
|
enum ib_qp_state qp_state;
|
|
enum ib_qp_state cur_qp_state;
|
|
enum ib_mtu path_mtu;
|
|
enum ib_mig_state path_mig_state;
|
|
u32 qkey;
|
|
u32 rq_psn;
|
|
u32 sq_psn;
|
|
u32 dest_qp_num;
|
|
int qp_access_flags;
|
|
struct ib_qp_cap cap;
|
|
struct ib_ah_attr ah_attr;
|
|
struct ib_ah_attr alt_ah_attr;
|
|
u16 pkey_index;
|
|
u16 alt_pkey_index;
|
|
u8 en_sqd_async_notify;
|
|
u8 sq_draining;
|
|
u8 max_rd_atomic;
|
|
u8 max_dest_rd_atomic;
|
|
u8 min_rnr_timer;
|
|
u8 port_num;
|
|
u8 timeout;
|
|
u8 retry_cnt;
|
|
u8 rnr_retry;
|
|
u8 alt_port_num;
|
|
u8 alt_timeout;
|
|
u8 smac[ETH_ALEN];
|
|
u8 alt_smac[ETH_ALEN];
|
|
u16 vlan_id;
|
|
u16 alt_vlan_id;
|
|
};
|
|
|
|
enum ib_wr_opcode {
|
|
IB_WR_RDMA_WRITE,
|
|
IB_WR_RDMA_WRITE_WITH_IMM,
|
|
IB_WR_SEND,
|
|
IB_WR_SEND_WITH_IMM,
|
|
IB_WR_RDMA_READ,
|
|
IB_WR_ATOMIC_CMP_AND_SWP,
|
|
IB_WR_ATOMIC_FETCH_AND_ADD,
|
|
IB_WR_LSO,
|
|
IB_WR_SEND_WITH_INV,
|
|
IB_WR_RDMA_READ_WITH_INV,
|
|
IB_WR_LOCAL_INV,
|
|
IB_WR_FAST_REG_MR,
|
|
IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
|
|
IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
|
|
IB_WR_BIND_MW,
|
|
IB_WR_REG_SIG_MR,
|
|
/* reserve values for low level drivers' internal use.
|
|
* These values will not be used at all in the ib core layer.
|
|
*/
|
|
IB_WR_RESERVED1 = 0xf0,
|
|
IB_WR_RESERVED2,
|
|
IB_WR_RESERVED3,
|
|
IB_WR_RESERVED4,
|
|
IB_WR_RESERVED5,
|
|
IB_WR_RESERVED6,
|
|
IB_WR_RESERVED7,
|
|
IB_WR_RESERVED8,
|
|
IB_WR_RESERVED9,
|
|
IB_WR_RESERVED10,
|
|
};
|
|
|
|
enum ib_send_flags {
|
|
IB_SEND_FENCE = 1,
|
|
IB_SEND_SIGNALED = (1<<1),
|
|
IB_SEND_SOLICITED = (1<<2),
|
|
IB_SEND_INLINE = (1<<3),
|
|
IB_SEND_IP_CSUM = (1<<4),
|
|
|
|
/* reserve bits 26-31 for low level drivers' internal use */
|
|
IB_SEND_RESERVED_START = (1 << 26),
|
|
IB_SEND_RESERVED_END = (1 << 31),
|
|
};
|
|
|
|
struct ib_sge {
|
|
u64 addr;
|
|
u32 length;
|
|
u32 lkey;
|
|
};
|
|
|
|
struct ib_fast_reg_page_list {
|
|
struct ib_device *device;
|
|
u64 *page_list;
|
|
unsigned int max_page_list_len;
|
|
};
|
|
|
|
/**
|
|
* struct ib_mw_bind_info - Parameters for a memory window bind operation.
|
|
* @mr: A memory region to bind the memory window to.
|
|
* @addr: The address where the memory window should begin.
|
|
* @length: The length of the memory window, in bytes.
|
|
* @mw_access_flags: Access flags from enum ib_access_flags for the window.
|
|
*
|
|
* This struct contains the shared parameters for type 1 and type 2
|
|
* memory window bind operations.
|
|
*/
|
|
struct ib_mw_bind_info {
|
|
struct ib_mr *mr;
|
|
u64 addr;
|
|
u64 length;
|
|
int mw_access_flags;
|
|
};
|
|
|
|
struct ib_send_wr {
|
|
struct ib_send_wr *next;
|
|
u64 wr_id;
|
|
struct ib_sge *sg_list;
|
|
int num_sge;
|
|
enum ib_wr_opcode opcode;
|
|
int send_flags;
|
|
union {
|
|
__be32 imm_data;
|
|
u32 invalidate_rkey;
|
|
} ex;
|
|
union {
|
|
struct {
|
|
u64 remote_addr;
|
|
u32 rkey;
|
|
} rdma;
|
|
struct {
|
|
u64 remote_addr;
|
|
u64 compare_add;
|
|
u64 swap;
|
|
u64 compare_add_mask;
|
|
u64 swap_mask;
|
|
u32 rkey;
|
|
} atomic;
|
|
struct {
|
|
struct ib_ah *ah;
|
|
void *header;
|
|
int hlen;
|
|
int mss;
|
|
u32 remote_qpn;
|
|
u32 remote_qkey;
|
|
u16 pkey_index; /* valid for GSI only */
|
|
u8 port_num; /* valid for DR SMPs on switch only */
|
|
} ud;
|
|
struct {
|
|
u64 iova_start;
|
|
struct ib_fast_reg_page_list *page_list;
|
|
unsigned int page_shift;
|
|
unsigned int page_list_len;
|
|
u32 length;
|
|
int access_flags;
|
|
u32 rkey;
|
|
} fast_reg;
|
|
struct {
|
|
struct ib_mw *mw;
|
|
/* The new rkey for the memory window. */
|
|
u32 rkey;
|
|
struct ib_mw_bind_info bind_info;
|
|
} bind_mw;
|
|
struct {
|
|
struct ib_sig_attrs *sig_attrs;
|
|
struct ib_mr *sig_mr;
|
|
int access_flags;
|
|
struct ib_sge *prot;
|
|
} sig_handover;
|
|
} wr;
|
|
u32 xrc_remote_srq_num; /* XRC TGT QPs only */
|
|
};
|
|
|
|
struct ib_recv_wr {
|
|
struct ib_recv_wr *next;
|
|
u64 wr_id;
|
|
struct ib_sge *sg_list;
|
|
int num_sge;
|
|
};
|
|
|
|
enum ib_access_flags {
|
|
IB_ACCESS_LOCAL_WRITE = 1,
|
|
IB_ACCESS_REMOTE_WRITE = (1<<1),
|
|
IB_ACCESS_REMOTE_READ = (1<<2),
|
|
IB_ACCESS_REMOTE_ATOMIC = (1<<3),
|
|
IB_ACCESS_MW_BIND = (1<<4),
|
|
IB_ZERO_BASED = (1<<5),
|
|
IB_ACCESS_ON_DEMAND = (1<<6),
|
|
};
|
|
|
|
struct ib_phys_buf {
|
|
u64 addr;
|
|
u64 size;
|
|
};
|
|
|
|
struct ib_mr_attr {
|
|
struct ib_pd *pd;
|
|
u64 device_virt_addr;
|
|
u64 size;
|
|
int mr_access_flags;
|
|
u32 lkey;
|
|
u32 rkey;
|
|
};
|
|
|
|
enum ib_mr_rereg_flags {
|
|
IB_MR_REREG_TRANS = 1,
|
|
IB_MR_REREG_PD = (1<<1),
|
|
IB_MR_REREG_ACCESS = (1<<2),
|
|
IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
|
|
};
|
|
|
|
/**
|
|
* struct ib_mw_bind - Parameters for a type 1 memory window bind operation.
|
|
* @wr_id: Work request id.
|
|
* @send_flags: Flags from ib_send_flags enum.
|
|
* @bind_info: More parameters of the bind operation.
|
|
*/
|
|
struct ib_mw_bind {
|
|
u64 wr_id;
|
|
int send_flags;
|
|
struct ib_mw_bind_info bind_info;
|
|
};
|
|
|
|
struct ib_fmr_attr {
|
|
int max_pages;
|
|
int max_maps;
|
|
u8 page_shift;
|
|
};
|
|
|
|
struct ib_umem;
|
|
|
|
struct ib_ucontext {
|
|
struct ib_device *device;
|
|
struct list_head pd_list;
|
|
struct list_head mr_list;
|
|
struct list_head mw_list;
|
|
struct list_head cq_list;
|
|
struct list_head qp_list;
|
|
struct list_head srq_list;
|
|
struct list_head ah_list;
|
|
struct list_head xrcd_list;
|
|
struct list_head rule_list;
|
|
int closing;
|
|
|
|
struct pid *tgid;
|
|
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
|
|
struct rb_root umem_tree;
|
|
/*
|
|
* Protects .umem_rbroot and tree, as well as odp_mrs_count and
|
|
* mmu notifiers registration.
|
|
*/
|
|
struct rw_semaphore umem_rwsem;
|
|
void (*invalidate_range)(struct ib_umem *umem,
|
|
unsigned long start, unsigned long end);
|
|
|
|
struct mmu_notifier mn;
|
|
atomic_t notifier_count;
|
|
/* A list of umems that don't have private mmu notifier counters yet. */
|
|
struct list_head no_private_counters;
|
|
int odp_mrs_count;
|
|
#endif
|
|
};
|
|
|
|
struct ib_uobject {
|
|
u64 user_handle; /* handle given to us by userspace */
|
|
struct ib_ucontext *context; /* associated user context */
|
|
void *object; /* containing object */
|
|
struct list_head list; /* link to context's list */
|
|
int id; /* index into kernel idr */
|
|
struct kref ref;
|
|
struct rw_semaphore mutex; /* protects .live */
|
|
int live;
|
|
};
|
|
|
|
struct ib_udata {
|
|
const void __user *inbuf;
|
|
void __user *outbuf;
|
|
size_t inlen;
|
|
size_t outlen;
|
|
};
|
|
|
|
struct ib_pd {
|
|
u32 local_dma_lkey;
|
|
struct ib_device *device;
|
|
struct ib_uobject *uobject;
|
|
atomic_t usecnt; /* count all resources */
|
|
struct ib_mr *local_mr;
|
|
};
|
|
|
|
struct ib_xrcd {
|
|
struct ib_device *device;
|
|
atomic_t usecnt; /* count all exposed resources */
|
|
struct inode *inode;
|
|
|
|
struct mutex tgt_qp_mutex;
|
|
struct list_head tgt_qp_list;
|
|
};
|
|
|
|
struct ib_ah {
|
|
struct ib_device *device;
|
|
struct ib_pd *pd;
|
|
struct ib_uobject *uobject;
|
|
};
|
|
|
|
typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
|
|
|
|
struct ib_cq {
|
|
struct ib_device *device;
|
|
struct ib_uobject *uobject;
|
|
ib_comp_handler comp_handler;
|
|
void (*event_handler)(struct ib_event *, void *);
|
|
void *cq_context;
|
|
int cqe;
|
|
atomic_t usecnt; /* count number of work queues */
|
|
};
|
|
|
|
struct ib_srq {
|
|
struct ib_device *device;
|
|
struct ib_pd *pd;
|
|
struct ib_uobject *uobject;
|
|
void (*event_handler)(struct ib_event *, void *);
|
|
void *srq_context;
|
|
enum ib_srq_type srq_type;
|
|
atomic_t usecnt;
|
|
|
|
union {
|
|
struct {
|
|
struct ib_xrcd *xrcd;
|
|
struct ib_cq *cq;
|
|
u32 srq_num;
|
|
} xrc;
|
|
} ext;
|
|
};
|
|
|
|
struct ib_qp {
|
|
struct ib_device *device;
|
|
struct ib_pd *pd;
|
|
struct ib_cq *send_cq;
|
|
struct ib_cq *recv_cq;
|
|
struct ib_srq *srq;
|
|
struct ib_xrcd *xrcd; /* XRC TGT QPs only */
|
|
struct list_head xrcd_list;
|
|
/* count times opened, mcast attaches, flow attaches */
|
|
atomic_t usecnt;
|
|
struct list_head open_list;
|
|
struct ib_qp *real_qp;
|
|
struct ib_uobject *uobject;
|
|
void (*event_handler)(struct ib_event *, void *);
|
|
void *qp_context;
|
|
u32 qp_num;
|
|
enum ib_qp_type qp_type;
|
|
};
|
|
|
|
struct ib_mr {
|
|
struct ib_device *device;
|
|
struct ib_pd *pd;
|
|
struct ib_uobject *uobject;
|
|
u32 lkey;
|
|
u32 rkey;
|
|
atomic_t usecnt; /* count number of MWs */
|
|
};
|
|
|
|
struct ib_mw {
|
|
struct ib_device *device;
|
|
struct ib_pd *pd;
|
|
struct ib_uobject *uobject;
|
|
u32 rkey;
|
|
enum ib_mw_type type;
|
|
};
|
|
|
|
struct ib_fmr {
|
|
struct ib_device *device;
|
|
struct ib_pd *pd;
|
|
struct list_head list;
|
|
u32 lkey;
|
|
u32 rkey;
|
|
};
|
|
|
|
/* Supported steering options */
|
|
enum ib_flow_attr_type {
|
|
/* steering according to rule specifications */
|
|
IB_FLOW_ATTR_NORMAL = 0x0,
|
|
/* default unicast and multicast rule -
|
|
* receive all Eth traffic which isn't steered to any QP
|
|
*/
|
|
IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
|
|
/* default multicast rule -
|
|
* receive all Eth multicast traffic which isn't steered to any QP
|
|
*/
|
|
IB_FLOW_ATTR_MC_DEFAULT = 0x2,
|
|
/* sniffer rule - receive all port traffic */
|
|
IB_FLOW_ATTR_SNIFFER = 0x3
|
|
};
|
|
|
|
/* Supported steering header types */
|
|
enum ib_flow_spec_type {
|
|
/* L2 headers*/
|
|
IB_FLOW_SPEC_ETH = 0x20,
|
|
IB_FLOW_SPEC_IB = 0x22,
|
|
/* L3 header*/
|
|
IB_FLOW_SPEC_IPV4 = 0x30,
|
|
/* L4 headers*/
|
|
IB_FLOW_SPEC_TCP = 0x40,
|
|
IB_FLOW_SPEC_UDP = 0x41
|
|
};
|
|
#define IB_FLOW_SPEC_LAYER_MASK 0xF0
|
|
#define IB_FLOW_SPEC_SUPPORT_LAYERS 4
|
|
|
|
/* Flow steering rule priority is set according to it's domain.
|
|
* Lower domain value means higher priority.
|
|
*/
|
|
enum ib_flow_domain {
|
|
IB_FLOW_DOMAIN_USER,
|
|
IB_FLOW_DOMAIN_ETHTOOL,
|
|
IB_FLOW_DOMAIN_RFS,
|
|
IB_FLOW_DOMAIN_NIC,
|
|
IB_FLOW_DOMAIN_NUM /* Must be last */
|
|
};
|
|
|
|
struct ib_flow_eth_filter {
|
|
u8 dst_mac[6];
|
|
u8 src_mac[6];
|
|
__be16 ether_type;
|
|
__be16 vlan_tag;
|
|
};
|
|
|
|
struct ib_flow_spec_eth {
|
|
enum ib_flow_spec_type type;
|
|
u16 size;
|
|
struct ib_flow_eth_filter val;
|
|
struct ib_flow_eth_filter mask;
|
|
};
|
|
|
|
struct ib_flow_ib_filter {
|
|
__be16 dlid;
|
|
__u8 sl;
|
|
};
|
|
|
|
struct ib_flow_spec_ib {
|
|
enum ib_flow_spec_type type;
|
|
u16 size;
|
|
struct ib_flow_ib_filter val;
|
|
struct ib_flow_ib_filter mask;
|
|
};
|
|
|
|
struct ib_flow_ipv4_filter {
|
|
__be32 src_ip;
|
|
__be32 dst_ip;
|
|
};
|
|
|
|
struct ib_flow_spec_ipv4 {
|
|
enum ib_flow_spec_type type;
|
|
u16 size;
|
|
struct ib_flow_ipv4_filter val;
|
|
struct ib_flow_ipv4_filter mask;
|
|
};
|
|
|
|
struct ib_flow_tcp_udp_filter {
|
|
__be16 dst_port;
|
|
__be16 src_port;
|
|
};
|
|
|
|
struct ib_flow_spec_tcp_udp {
|
|
enum ib_flow_spec_type type;
|
|
u16 size;
|
|
struct ib_flow_tcp_udp_filter val;
|
|
struct ib_flow_tcp_udp_filter mask;
|
|
};
|
|
|
|
union ib_flow_spec {
|
|
struct {
|
|
enum ib_flow_spec_type type;
|
|
u16 size;
|
|
};
|
|
struct ib_flow_spec_eth eth;
|
|
struct ib_flow_spec_ib ib;
|
|
struct ib_flow_spec_ipv4 ipv4;
|
|
struct ib_flow_spec_tcp_udp tcp_udp;
|
|
};
|
|
|
|
struct ib_flow_attr {
|
|
enum ib_flow_attr_type type;
|
|
u16 size;
|
|
u16 priority;
|
|
u32 flags;
|
|
u8 num_of_specs;
|
|
u8 port;
|
|
/* Following are the optional layers according to user request
|
|
* struct ib_flow_spec_xxx
|
|
* struct ib_flow_spec_yyy
|
|
*/
|
|
};
|
|
|
|
struct ib_flow {
|
|
struct ib_qp *qp;
|
|
struct ib_uobject *uobject;
|
|
};
|
|
|
|
struct ib_mad_hdr;
|
|
struct ib_grh;
|
|
|
|
enum ib_process_mad_flags {
|
|
IB_MAD_IGNORE_MKEY = 1,
|
|
IB_MAD_IGNORE_BKEY = 2,
|
|
IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
|
|
};
|
|
|
|
enum ib_mad_result {
|
|
IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
|
|
IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
|
|
IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
|
|
IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
|
|
};
|
|
|
|
#define IB_DEVICE_NAME_MAX 64
|
|
|
|
struct ib_cache {
|
|
rwlock_t lock;
|
|
struct ib_event_handler event_handler;
|
|
struct ib_pkey_cache **pkey_cache;
|
|
struct ib_gid_table **gid_cache;
|
|
u8 *lmc_cache;
|
|
};
|
|
|
|
struct ib_dma_mapping_ops {
|
|
int (*mapping_error)(struct ib_device *dev,
|
|
u64 dma_addr);
|
|
u64 (*map_single)(struct ib_device *dev,
|
|
void *ptr, size_t size,
|
|
enum dma_data_direction direction);
|
|
void (*unmap_single)(struct ib_device *dev,
|
|
u64 addr, size_t size,
|
|
enum dma_data_direction direction);
|
|
u64 (*map_page)(struct ib_device *dev,
|
|
struct page *page, unsigned long offset,
|
|
size_t size,
|
|
enum dma_data_direction direction);
|
|
void (*unmap_page)(struct ib_device *dev,
|
|
u64 addr, size_t size,
|
|
enum dma_data_direction direction);
|
|
int (*map_sg)(struct ib_device *dev,
|
|
struct scatterlist *sg, int nents,
|
|
enum dma_data_direction direction);
|
|
void (*unmap_sg)(struct ib_device *dev,
|
|
struct scatterlist *sg, int nents,
|
|
enum dma_data_direction direction);
|
|
void (*sync_single_for_cpu)(struct ib_device *dev,
|
|
u64 dma_handle,
|
|
size_t size,
|
|
enum dma_data_direction dir);
|
|
void (*sync_single_for_device)(struct ib_device *dev,
|
|
u64 dma_handle,
|
|
size_t size,
|
|
enum dma_data_direction dir);
|
|
void *(*alloc_coherent)(struct ib_device *dev,
|
|
size_t size,
|
|
u64 *dma_handle,
|
|
gfp_t flag);
|
|
void (*free_coherent)(struct ib_device *dev,
|
|
size_t size, void *cpu_addr,
|
|
u64 dma_handle);
|
|
};
|
|
|
|
struct iw_cm_verbs;
|
|
|
|
struct ib_port_immutable {
|
|
int pkey_tbl_len;
|
|
int gid_tbl_len;
|
|
u32 core_cap_flags;
|
|
u32 max_mad_size;
|
|
};
|
|
|
|
struct ib_device {
|
|
struct device *dma_device;
|
|
|
|
char name[IB_DEVICE_NAME_MAX];
|
|
|
|
struct list_head event_handler_list;
|
|
spinlock_t event_handler_lock;
|
|
|
|
spinlock_t client_data_lock;
|
|
struct list_head core_list;
|
|
/* Access to the client_data_list is protected by the client_data_lock
|
|
* spinlock and the lists_rwsem read-write semaphore */
|
|
struct list_head client_data_list;
|
|
|
|
struct ib_cache cache;
|
|
/**
|
|
* port_immutable is indexed by port number
|
|
*/
|
|
struct ib_port_immutable *port_immutable;
|
|
|
|
int num_comp_vectors;
|
|
|
|
struct iw_cm_verbs *iwcm;
|
|
|
|
int (*get_protocol_stats)(struct ib_device *device,
|
|
union rdma_protocol_stats *stats);
|
|
int (*query_device)(struct ib_device *device,
|
|
struct ib_device_attr *device_attr,
|
|
struct ib_udata *udata);
|
|
int (*query_port)(struct ib_device *device,
|
|
u8 port_num,
|
|
struct ib_port_attr *port_attr);
|
|
enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
|
|
u8 port_num);
|
|
/* When calling get_netdev, the HW vendor's driver should return the
|
|
* net device of device @device at port @port_num or NULL if such
|
|
* a net device doesn't exist. The vendor driver should call dev_hold
|
|
* on this net device. The HW vendor's device driver must guarantee
|
|
* that this function returns NULL before the net device reaches
|
|
* NETDEV_UNREGISTER_FINAL state.
|
|
*/
|
|
struct net_device *(*get_netdev)(struct ib_device *device,
|
|
u8 port_num);
|
|
int (*query_gid)(struct ib_device *device,
|
|
u8 port_num, int index,
|
|
union ib_gid *gid);
|
|
/* When calling add_gid, the HW vendor's driver should
|
|
* add the gid of device @device at gid index @index of
|
|
* port @port_num to be @gid. Meta-info of that gid (for example,
|
|
* the network device related to this gid is available
|
|
* at @attr. @context allows the HW vendor driver to store extra
|
|
* information together with a GID entry. The HW vendor may allocate
|
|
* memory to contain this information and store it in @context when a
|
|
* new GID entry is written to. Params are consistent until the next
|
|
* call of add_gid or delete_gid. The function should return 0 on
|
|
* success or error otherwise. The function could be called
|
|
* concurrently for different ports. This function is only called
|
|
* when roce_gid_table is used.
|
|
*/
|
|
int (*add_gid)(struct ib_device *device,
|
|
u8 port_num,
|
|
unsigned int index,
|
|
const union ib_gid *gid,
|
|
const struct ib_gid_attr *attr,
|
|
void **context);
|
|
/* When calling del_gid, the HW vendor's driver should delete the
|
|
* gid of device @device at gid index @index of port @port_num.
|
|
* Upon the deletion of a GID entry, the HW vendor must free any
|
|
* allocated memory. The caller will clear @context afterwards.
|
|
* This function is only called when roce_gid_table is used.
|
|
*/
|
|
int (*del_gid)(struct ib_device *device,
|
|
u8 port_num,
|
|
unsigned int index,
|
|
void **context);
|
|
int (*query_pkey)(struct ib_device *device,
|
|
u8 port_num, u16 index, u16 *pkey);
|
|
int (*modify_device)(struct ib_device *device,
|
|
int device_modify_mask,
|
|
struct ib_device_modify *device_modify);
|
|
int (*modify_port)(struct ib_device *device,
|
|
u8 port_num, int port_modify_mask,
|
|
struct ib_port_modify *port_modify);
|
|
struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
|
|
struct ib_udata *udata);
|
|
int (*dealloc_ucontext)(struct ib_ucontext *context);
|
|
int (*mmap)(struct ib_ucontext *context,
|
|
struct vm_area_struct *vma);
|
|
struct ib_pd * (*alloc_pd)(struct ib_device *device,
|
|
struct ib_ucontext *context,
|
|
struct ib_udata *udata);
|
|
int (*dealloc_pd)(struct ib_pd *pd);
|
|
struct ib_ah * (*create_ah)(struct ib_pd *pd,
|
|
struct ib_ah_attr *ah_attr);
|
|
int (*modify_ah)(struct ib_ah *ah,
|
|
struct ib_ah_attr *ah_attr);
|
|
int (*query_ah)(struct ib_ah *ah,
|
|
struct ib_ah_attr *ah_attr);
|
|
int (*destroy_ah)(struct ib_ah *ah);
|
|
struct ib_srq * (*create_srq)(struct ib_pd *pd,
|
|
struct ib_srq_init_attr *srq_init_attr,
|
|
struct ib_udata *udata);
|
|
int (*modify_srq)(struct ib_srq *srq,
|
|
struct ib_srq_attr *srq_attr,
|
|
enum ib_srq_attr_mask srq_attr_mask,
|
|
struct ib_udata *udata);
|
|
int (*query_srq)(struct ib_srq *srq,
|
|
struct ib_srq_attr *srq_attr);
|
|
int (*destroy_srq)(struct ib_srq *srq);
|
|
int (*post_srq_recv)(struct ib_srq *srq,
|
|
struct ib_recv_wr *recv_wr,
|
|
struct ib_recv_wr **bad_recv_wr);
|
|
struct ib_qp * (*create_qp)(struct ib_pd *pd,
|
|
struct ib_qp_init_attr *qp_init_attr,
|
|
struct ib_udata *udata);
|
|
int (*modify_qp)(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask,
|
|
struct ib_udata *udata);
|
|
int (*query_qp)(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask,
|
|
struct ib_qp_init_attr *qp_init_attr);
|
|
int (*destroy_qp)(struct ib_qp *qp);
|
|
int (*post_send)(struct ib_qp *qp,
|
|
struct ib_send_wr *send_wr,
|
|
struct ib_send_wr **bad_send_wr);
|
|
int (*post_recv)(struct ib_qp *qp,
|
|
struct ib_recv_wr *recv_wr,
|
|
struct ib_recv_wr **bad_recv_wr);
|
|
struct ib_cq * (*create_cq)(struct ib_device *device,
|
|
const struct ib_cq_init_attr *attr,
|
|
struct ib_ucontext *context,
|
|
struct ib_udata *udata);
|
|
int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
|
|
u16 cq_period);
|
|
int (*destroy_cq)(struct ib_cq *cq);
|
|
int (*resize_cq)(struct ib_cq *cq, int cqe,
|
|
struct ib_udata *udata);
|
|
int (*poll_cq)(struct ib_cq *cq, int num_entries,
|
|
struct ib_wc *wc);
|
|
int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
|
|
int (*req_notify_cq)(struct ib_cq *cq,
|
|
enum ib_cq_notify_flags flags);
|
|
int (*req_ncomp_notif)(struct ib_cq *cq,
|
|
int wc_cnt);
|
|
struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
|
|
int mr_access_flags);
|
|
struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
|
|
struct ib_phys_buf *phys_buf_array,
|
|
int num_phys_buf,
|
|
int mr_access_flags,
|
|
u64 *iova_start);
|
|
struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
|
|
u64 start, u64 length,
|
|
u64 virt_addr,
|
|
int mr_access_flags,
|
|
struct ib_udata *udata);
|
|
int (*rereg_user_mr)(struct ib_mr *mr,
|
|
int flags,
|
|
u64 start, u64 length,
|
|
u64 virt_addr,
|
|
int mr_access_flags,
|
|
struct ib_pd *pd,
|
|
struct ib_udata *udata);
|
|
int (*query_mr)(struct ib_mr *mr,
|
|
struct ib_mr_attr *mr_attr);
|
|
int (*dereg_mr)(struct ib_mr *mr);
|
|
struct ib_mr * (*alloc_mr)(struct ib_pd *pd,
|
|
enum ib_mr_type mr_type,
|
|
u32 max_num_sg);
|
|
struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device,
|
|
int page_list_len);
|
|
void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list);
|
|
int (*rereg_phys_mr)(struct ib_mr *mr,
|
|
int mr_rereg_mask,
|
|
struct ib_pd *pd,
|
|
struct ib_phys_buf *phys_buf_array,
|
|
int num_phys_buf,
|
|
int mr_access_flags,
|
|
u64 *iova_start);
|
|
struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
|
|
enum ib_mw_type type);
|
|
int (*bind_mw)(struct ib_qp *qp,
|
|
struct ib_mw *mw,
|
|
struct ib_mw_bind *mw_bind);
|
|
int (*dealloc_mw)(struct ib_mw *mw);
|
|
struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
|
|
int mr_access_flags,
|
|
struct ib_fmr_attr *fmr_attr);
|
|
int (*map_phys_fmr)(struct ib_fmr *fmr,
|
|
u64 *page_list, int list_len,
|
|
u64 iova);
|
|
int (*unmap_fmr)(struct list_head *fmr_list);
|
|
int (*dealloc_fmr)(struct ib_fmr *fmr);
|
|
int (*attach_mcast)(struct ib_qp *qp,
|
|
union ib_gid *gid,
|
|
u16 lid);
|
|
int (*detach_mcast)(struct ib_qp *qp,
|
|
union ib_gid *gid,
|
|
u16 lid);
|
|
int (*process_mad)(struct ib_device *device,
|
|
int process_mad_flags,
|
|
u8 port_num,
|
|
const struct ib_wc *in_wc,
|
|
const struct ib_grh *in_grh,
|
|
const struct ib_mad_hdr *in_mad,
|
|
size_t in_mad_size,
|
|
struct ib_mad_hdr *out_mad,
|
|
size_t *out_mad_size,
|
|
u16 *out_mad_pkey_index);
|
|
struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
|
|
struct ib_ucontext *ucontext,
|
|
struct ib_udata *udata);
|
|
int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
|
|
struct ib_flow * (*create_flow)(struct ib_qp *qp,
|
|
struct ib_flow_attr
|
|
*flow_attr,
|
|
int domain);
|
|
int (*destroy_flow)(struct ib_flow *flow_id);
|
|
int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
|
|
struct ib_mr_status *mr_status);
|
|
void (*disassociate_ucontext)(struct ib_ucontext *ibcontext);
|
|
|
|
struct ib_dma_mapping_ops *dma_ops;
|
|
|
|
struct module *owner;
|
|
struct device dev;
|
|
struct kobject *ports_parent;
|
|
struct list_head port_list;
|
|
|
|
enum {
|
|
IB_DEV_UNINITIALIZED,
|
|
IB_DEV_REGISTERED,
|
|
IB_DEV_UNREGISTERED
|
|
} reg_state;
|
|
|
|
int uverbs_abi_ver;
|
|
u64 uverbs_cmd_mask;
|
|
u64 uverbs_ex_cmd_mask;
|
|
|
|
char node_desc[64];
|
|
__be64 node_guid;
|
|
u32 local_dma_lkey;
|
|
u16 is_switch:1;
|
|
u8 node_type;
|
|
u8 phys_port_cnt;
|
|
|
|
/**
|
|
* The following mandatory functions are used only at device
|
|
* registration. Keep functions such as these at the end of this
|
|
* structure to avoid cache line misses when accessing struct ib_device
|
|
* in fast paths.
|
|
*/
|
|
int (*get_port_immutable)(struct ib_device *, u8, struct ib_port_immutable *);
|
|
};
|
|
|
|
struct ib_client {
|
|
char *name;
|
|
void (*add) (struct ib_device *);
|
|
void (*remove)(struct ib_device *, void *client_data);
|
|
|
|
/* Returns the net_dev belonging to this ib_client and matching the
|
|
* given parameters.
|
|
* @dev: An RDMA device that the net_dev use for communication.
|
|
* @port: A physical port number on the RDMA device.
|
|
* @pkey: P_Key that the net_dev uses if applicable.
|
|
* @gid: A GID that the net_dev uses to communicate.
|
|
* @addr: An IP address the net_dev is configured with.
|
|
* @client_data: The device's client data set by ib_set_client_data().
|
|
*
|
|
* An ib_client that implements a net_dev on top of RDMA devices
|
|
* (such as IP over IB) should implement this callback, allowing the
|
|
* rdma_cm module to find the right net_dev for a given request.
|
|
*
|
|
* The caller is responsible for calling dev_put on the returned
|
|
* netdev. */
|
|
struct net_device *(*get_net_dev_by_params)(
|
|
struct ib_device *dev,
|
|
u8 port,
|
|
u16 pkey,
|
|
const union ib_gid *gid,
|
|
const struct sockaddr *addr,
|
|
void *client_data);
|
|
struct list_head list;
|
|
};
|
|
|
|
struct ib_device *ib_alloc_device(size_t size);
|
|
void ib_dealloc_device(struct ib_device *device);
|
|
|
|
int ib_register_device(struct ib_device *device,
|
|
int (*port_callback)(struct ib_device *,
|
|
u8, struct kobject *));
|
|
void ib_unregister_device(struct ib_device *device);
|
|
|
|
int ib_register_client (struct ib_client *client);
|
|
void ib_unregister_client(struct ib_client *client);
|
|
|
|
void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
|
|
void ib_set_client_data(struct ib_device *device, struct ib_client *client,
|
|
void *data);
|
|
|
|
static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
|
|
{
|
|
return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
|
|
}
|
|
|
|
static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
|
|
{
|
|
return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
|
|
}
|
|
|
|
/**
|
|
* ib_modify_qp_is_ok - Check that the supplied attribute mask
|
|
* contains all required attributes and no attributes not allowed for
|
|
* the given QP state transition.
|
|
* @cur_state: Current QP state
|
|
* @next_state: Next QP state
|
|
* @type: QP type
|
|
* @mask: Mask of supplied QP attributes
|
|
* @ll : link layer of port
|
|
*
|
|
* This function is a helper function that a low-level driver's
|
|
* modify_qp method can use to validate the consumer's input. It
|
|
* checks that cur_state and next_state are valid QP states, that a
|
|
* transition from cur_state to next_state is allowed by the IB spec,
|
|
* and that the attribute mask supplied is allowed for the transition.
|
|
*/
|
|
int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
|
|
enum ib_qp_type type, enum ib_qp_attr_mask mask,
|
|
enum rdma_link_layer ll);
|
|
|
|
int ib_register_event_handler (struct ib_event_handler *event_handler);
|
|
int ib_unregister_event_handler(struct ib_event_handler *event_handler);
|
|
void ib_dispatch_event(struct ib_event *event);
|
|
|
|
int ib_query_device(struct ib_device *device,
|
|
struct ib_device_attr *device_attr);
|
|
|
|
int ib_query_port(struct ib_device *device,
|
|
u8 port_num, struct ib_port_attr *port_attr);
|
|
|
|
enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
|
|
u8 port_num);
|
|
|
|
/**
|
|
* rdma_cap_ib_switch - Check if the device is IB switch
|
|
* @device: Device to check
|
|
*
|
|
* Device driver is responsible for setting is_switch bit on
|
|
* in ib_device structure at init time.
|
|
*
|
|
* Return: true if the device is IB switch.
|
|
*/
|
|
static inline bool rdma_cap_ib_switch(const struct ib_device *device)
|
|
{
|
|
return device->is_switch;
|
|
}
|
|
|
|
/**
|
|
* rdma_start_port - Return the first valid port number for the device
|
|
* specified
|
|
*
|
|
* @device: Device to be checked
|
|
*
|
|
* Return start port number
|
|
*/
|
|
static inline u8 rdma_start_port(const struct ib_device *device)
|
|
{
|
|
return rdma_cap_ib_switch(device) ? 0 : 1;
|
|
}
|
|
|
|
/**
|
|
* rdma_end_port - Return the last valid port number for the device
|
|
* specified
|
|
*
|
|
* @device: Device to be checked
|
|
*
|
|
* Return last port number
|
|
*/
|
|
static inline u8 rdma_end_port(const struct ib_device *device)
|
|
{
|
|
return rdma_cap_ib_switch(device) ? 0 : device->phys_port_cnt;
|
|
}
|
|
|
|
static inline bool rdma_protocol_ib(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IB;
|
|
}
|
|
|
|
static inline bool rdma_protocol_roce(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_ROCE;
|
|
}
|
|
|
|
static inline bool rdma_protocol_iwarp(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_PROT_IWARP;
|
|
}
|
|
|
|
static inline bool rdma_ib_or_roce(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags &
|
|
(RDMA_CORE_CAP_PROT_IB | RDMA_CORE_CAP_PROT_ROCE);
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_ib_mad - Check if the port of a device supports Infiniband
|
|
* Management Datagrams.
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* Management Datagrams (MAD) are a required part of the InfiniBand
|
|
* specification and are supported on all InfiniBand devices. A slightly
|
|
* extended version are also supported on OPA interfaces.
|
|
*
|
|
* Return: true if the port supports sending/receiving of MAD packets.
|
|
*/
|
|
static inline bool rdma_cap_ib_mad(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_MAD;
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_opa_mad - Check if the port of device provides support for OPA
|
|
* Management Datagrams.
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* Intel OmniPath devices extend and/or replace the InfiniBand Management
|
|
* datagrams with their own versions. These OPA MADs share many but not all of
|
|
* the characteristics of InfiniBand MADs.
|
|
*
|
|
* OPA MADs differ in the following ways:
|
|
*
|
|
* 1) MADs are variable size up to 2K
|
|
* IBTA defined MADs remain fixed at 256 bytes
|
|
* 2) OPA SMPs must carry valid PKeys
|
|
* 3) OPA SMP packets are a different format
|
|
*
|
|
* Return: true if the port supports OPA MAD packet formats.
|
|
*/
|
|
static inline bool rdma_cap_opa_mad(struct ib_device *device, u8 port_num)
|
|
{
|
|
return (device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_OPA_MAD)
|
|
== RDMA_CORE_CAP_OPA_MAD;
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_ib_smi - Check if the port of a device provides an Infiniband
|
|
* Subnet Management Agent (SMA) on the Subnet Management Interface (SMI).
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* Each InfiniBand node is required to provide a Subnet Management Agent
|
|
* that the subnet manager can access. Prior to the fabric being fully
|
|
* configured by the subnet manager, the SMA is accessed via a well known
|
|
* interface called the Subnet Management Interface (SMI). This interface
|
|
* uses directed route packets to communicate with the SM to get around the
|
|
* chicken and egg problem of the SM needing to know what's on the fabric
|
|
* in order to configure the fabric, and needing to configure the fabric in
|
|
* order to send packets to the devices on the fabric. These directed
|
|
* route packets do not need the fabric fully configured in order to reach
|
|
* their destination. The SMI is the only method allowed to send
|
|
* directed route packets on an InfiniBand fabric.
|
|
*
|
|
* Return: true if the port provides an SMI.
|
|
*/
|
|
static inline bool rdma_cap_ib_smi(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SMI;
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_ib_cm - Check if the port of device has the capability Infiniband
|
|
* Communication Manager.
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* The InfiniBand Communication Manager is one of many pre-defined General
|
|
* Service Agents (GSA) that are accessed via the General Service
|
|
* Interface (GSI). It's role is to facilitate establishment of connections
|
|
* between nodes as well as other management related tasks for established
|
|
* connections.
|
|
*
|
|
* Return: true if the port supports an IB CM (this does not guarantee that
|
|
* a CM is actually running however).
|
|
*/
|
|
static inline bool rdma_cap_ib_cm(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_CM;
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_iw_cm - Check if the port of device has the capability IWARP
|
|
* Communication Manager.
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* Similar to above, but specific to iWARP connections which have a different
|
|
* managment protocol than InfiniBand.
|
|
*
|
|
* Return: true if the port supports an iWARP CM (this does not guarantee that
|
|
* a CM is actually running however).
|
|
*/
|
|
static inline bool rdma_cap_iw_cm(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IW_CM;
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_ib_sa - Check if the port of device has the capability Infiniband
|
|
* Subnet Administration.
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* An InfiniBand Subnet Administration (SA) service is a pre-defined General
|
|
* Service Agent (GSA) provided by the Subnet Manager (SM). On InfiniBand
|
|
* fabrics, devices should resolve routes to other hosts by contacting the
|
|
* SA to query the proper route.
|
|
*
|
|
* Return: true if the port should act as a client to the fabric Subnet
|
|
* Administration interface. This does not imply that the SA service is
|
|
* running locally.
|
|
*/
|
|
static inline bool rdma_cap_ib_sa(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_IB_SA;
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_ib_mcast - Check if the port of device has the capability Infiniband
|
|
* Multicast.
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* InfiniBand multicast registration is more complex than normal IPv4 or
|
|
* IPv6 multicast registration. Each Host Channel Adapter must register
|
|
* with the Subnet Manager when it wishes to join a multicast group. It
|
|
* should do so only once regardless of how many queue pairs it subscribes
|
|
* to this group. And it should leave the group only after all queue pairs
|
|
* attached to the group have been detached.
|
|
*
|
|
* Return: true if the port must undertake the additional adminstrative
|
|
* overhead of registering/unregistering with the SM and tracking of the
|
|
* total number of queue pairs attached to the multicast group.
|
|
*/
|
|
static inline bool rdma_cap_ib_mcast(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return rdma_cap_ib_sa(device, port_num);
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_af_ib - Check if the port of device has the capability
|
|
* Native Infiniband Address.
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* InfiniBand addressing uses a port's GUID + Subnet Prefix to make a default
|
|
* GID. RoCE uses a different mechanism, but still generates a GID via
|
|
* a prescribed mechanism and port specific data.
|
|
*
|
|
* Return: true if the port uses a GID address to identify devices on the
|
|
* network.
|
|
*/
|
|
static inline bool rdma_cap_af_ib(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_AF_IB;
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_eth_ah - Check if the port of device has the capability
|
|
* Ethernet Address Handle.
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* RoCE is InfiniBand over Ethernet, and it uses a well defined technique
|
|
* to fabricate GIDs over Ethernet/IP specific addresses native to the
|
|
* port. Normally, packet headers are generated by the sending host
|
|
* adapter, but when sending connectionless datagrams, we must manually
|
|
* inject the proper headers for the fabric we are communicating over.
|
|
*
|
|
* Return: true if we are running as a RoCE port and must force the
|
|
* addition of a Global Route Header built from our Ethernet Address
|
|
* Handle into our header list for connectionless packets.
|
|
*/
|
|
static inline bool rdma_cap_eth_ah(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].core_cap_flags & RDMA_CORE_CAP_ETH_AH;
|
|
}
|
|
|
|
/**
|
|
* rdma_max_mad_size - Return the max MAD size required by this RDMA Port.
|
|
*
|
|
* @device: Device
|
|
* @port_num: Port number
|
|
*
|
|
* This MAD size includes the MAD headers and MAD payload. No other headers
|
|
* are included.
|
|
*
|
|
* Return the max MAD size required by the Port. Will return 0 if the port
|
|
* does not support MADs
|
|
*/
|
|
static inline size_t rdma_max_mad_size(const struct ib_device *device, u8 port_num)
|
|
{
|
|
return device->port_immutable[port_num].max_mad_size;
|
|
}
|
|
|
|
/**
|
|
* rdma_cap_roce_gid_table - Check if the port of device uses roce_gid_table
|
|
* @device: Device to check
|
|
* @port_num: Port number to check
|
|
*
|
|
* RoCE GID table mechanism manages the various GIDs for a device.
|
|
*
|
|
* NOTE: if allocating the port's GID table has failed, this call will still
|
|
* return true, but any RoCE GID table API will fail.
|
|
*
|
|
* Return: true if the port uses RoCE GID table mechanism in order to manage
|
|
* its GIDs.
|
|
*/
|
|
static inline bool rdma_cap_roce_gid_table(const struct ib_device *device,
|
|
u8 port_num)
|
|
{
|
|
return rdma_protocol_roce(device, port_num) &&
|
|
device->add_gid && device->del_gid;
|
|
}
|
|
|
|
int ib_query_gid(struct ib_device *device,
|
|
u8 port_num, int index, union ib_gid *gid);
|
|
|
|
int ib_query_pkey(struct ib_device *device,
|
|
u8 port_num, u16 index, u16 *pkey);
|
|
|
|
int ib_modify_device(struct ib_device *device,
|
|
int device_modify_mask,
|
|
struct ib_device_modify *device_modify);
|
|
|
|
int ib_modify_port(struct ib_device *device,
|
|
u8 port_num, int port_modify_mask,
|
|
struct ib_port_modify *port_modify);
|
|
|
|
int ib_find_gid(struct ib_device *device, union ib_gid *gid,
|
|
u8 *port_num, u16 *index);
|
|
|
|
int ib_find_pkey(struct ib_device *device,
|
|
u8 port_num, u16 pkey, u16 *index);
|
|
|
|
struct ib_pd *ib_alloc_pd(struct ib_device *device);
|
|
|
|
void ib_dealloc_pd(struct ib_pd *pd);
|
|
|
|
/**
|
|
* ib_create_ah - Creates an address handle for the given address vector.
|
|
* @pd: The protection domain associated with the address handle.
|
|
* @ah_attr: The attributes of the address vector.
|
|
*
|
|
* The address handle is used to reference a local or global destination
|
|
* in all UD QP post sends.
|
|
*/
|
|
struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
|
|
|
|
/**
|
|
* ib_init_ah_from_wc - Initializes address handle attributes from a
|
|
* work completion.
|
|
* @device: Device on which the received message arrived.
|
|
* @port_num: Port on which the received message arrived.
|
|
* @wc: Work completion associated with the received message.
|
|
* @grh: References the received global route header. This parameter is
|
|
* ignored unless the work completion indicates that the GRH is valid.
|
|
* @ah_attr: Returned attributes that can be used when creating an address
|
|
* handle for replying to the message.
|
|
*/
|
|
int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
|
|
const struct ib_wc *wc, const struct ib_grh *grh,
|
|
struct ib_ah_attr *ah_attr);
|
|
|
|
/**
|
|
* ib_create_ah_from_wc - Creates an address handle associated with the
|
|
* sender of the specified work completion.
|
|
* @pd: The protection domain associated with the address handle.
|
|
* @wc: Work completion information associated with a received message.
|
|
* @grh: References the received global route header. This parameter is
|
|
* ignored unless the work completion indicates that the GRH is valid.
|
|
* @port_num: The outbound port number to associate with the address.
|
|
*
|
|
* The address handle is used to reference a local or global destination
|
|
* in all UD QP post sends.
|
|
*/
|
|
struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
|
|
const struct ib_grh *grh, u8 port_num);
|
|
|
|
/**
|
|
* ib_modify_ah - Modifies the address vector associated with an address
|
|
* handle.
|
|
* @ah: The address handle to modify.
|
|
* @ah_attr: The new address vector attributes to associate with the
|
|
* address handle.
|
|
*/
|
|
int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
|
|
|
|
/**
|
|
* ib_query_ah - Queries the address vector associated with an address
|
|
* handle.
|
|
* @ah: The address handle to query.
|
|
* @ah_attr: The address vector attributes associated with the address
|
|
* handle.
|
|
*/
|
|
int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
|
|
|
|
/**
|
|
* ib_destroy_ah - Destroys an address handle.
|
|
* @ah: The address handle to destroy.
|
|
*/
|
|
int ib_destroy_ah(struct ib_ah *ah);
|
|
|
|
/**
|
|
* ib_create_srq - Creates a SRQ associated with the specified protection
|
|
* domain.
|
|
* @pd: The protection domain associated with the SRQ.
|
|
* @srq_init_attr: A list of initial attributes required to create the
|
|
* SRQ. If SRQ creation succeeds, then the attributes are updated to
|
|
* the actual capabilities of the created SRQ.
|
|
*
|
|
* srq_attr->max_wr and srq_attr->max_sge are read the determine the
|
|
* requested size of the SRQ, and set to the actual values allocated
|
|
* on return. If ib_create_srq() succeeds, then max_wr and max_sge
|
|
* will always be at least as large as the requested values.
|
|
*/
|
|
struct ib_srq *ib_create_srq(struct ib_pd *pd,
|
|
struct ib_srq_init_attr *srq_init_attr);
|
|
|
|
/**
|
|
* ib_modify_srq - Modifies the attributes for the specified SRQ.
|
|
* @srq: The SRQ to modify.
|
|
* @srq_attr: On input, specifies the SRQ attributes to modify. On output,
|
|
* the current values of selected SRQ attributes are returned.
|
|
* @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
|
|
* are being modified.
|
|
*
|
|
* The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
|
|
* IB_SRQ_LIMIT to set the SRQ's limit and request notification when
|
|
* the number of receives queued drops below the limit.
|
|
*/
|
|
int ib_modify_srq(struct ib_srq *srq,
|
|
struct ib_srq_attr *srq_attr,
|
|
enum ib_srq_attr_mask srq_attr_mask);
|
|
|
|
/**
|
|
* ib_query_srq - Returns the attribute list and current values for the
|
|
* specified SRQ.
|
|
* @srq: The SRQ to query.
|
|
* @srq_attr: The attributes of the specified SRQ.
|
|
*/
|
|
int ib_query_srq(struct ib_srq *srq,
|
|
struct ib_srq_attr *srq_attr);
|
|
|
|
/**
|
|
* ib_destroy_srq - Destroys the specified SRQ.
|
|
* @srq: The SRQ to destroy.
|
|
*/
|
|
int ib_destroy_srq(struct ib_srq *srq);
|
|
|
|
/**
|
|
* ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
|
|
* @srq: The SRQ to post the work request on.
|
|
* @recv_wr: A list of work requests to post on the receive queue.
|
|
* @bad_recv_wr: On an immediate failure, this parameter will reference
|
|
* the work request that failed to be posted on the QP.
|
|
*/
|
|
static inline int ib_post_srq_recv(struct ib_srq *srq,
|
|
struct ib_recv_wr *recv_wr,
|
|
struct ib_recv_wr **bad_recv_wr)
|
|
{
|
|
return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
|
|
}
|
|
|
|
/**
|
|
* ib_create_qp - Creates a QP associated with the specified protection
|
|
* domain.
|
|
* @pd: The protection domain associated with the QP.
|
|
* @qp_init_attr: A list of initial attributes required to create the
|
|
* QP. If QP creation succeeds, then the attributes are updated to
|
|
* the actual capabilities of the created QP.
|
|
*/
|
|
struct ib_qp *ib_create_qp(struct ib_pd *pd,
|
|
struct ib_qp_init_attr *qp_init_attr);
|
|
|
|
/**
|
|
* ib_modify_qp - Modifies the attributes for the specified QP and then
|
|
* transitions the QP to the given state.
|
|
* @qp: The QP to modify.
|
|
* @qp_attr: On input, specifies the QP attributes to modify. On output,
|
|
* the current values of selected QP attributes are returned.
|
|
* @qp_attr_mask: A bit-mask used to specify which attributes of the QP
|
|
* are being modified.
|
|
*/
|
|
int ib_modify_qp(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask);
|
|
|
|
/**
|
|
* ib_query_qp - Returns the attribute list and current values for the
|
|
* specified QP.
|
|
* @qp: The QP to query.
|
|
* @qp_attr: The attributes of the specified QP.
|
|
* @qp_attr_mask: A bit-mask used to select specific attributes to query.
|
|
* @qp_init_attr: Additional attributes of the selected QP.
|
|
*
|
|
* The qp_attr_mask may be used to limit the query to gathering only the
|
|
* selected attributes.
|
|
*/
|
|
int ib_query_qp(struct ib_qp *qp,
|
|
struct ib_qp_attr *qp_attr,
|
|
int qp_attr_mask,
|
|
struct ib_qp_init_attr *qp_init_attr);
|
|
|
|
/**
|
|
* ib_destroy_qp - Destroys the specified QP.
|
|
* @qp: The QP to destroy.
|
|
*/
|
|
int ib_destroy_qp(struct ib_qp *qp);
|
|
|
|
/**
|
|
* ib_open_qp - Obtain a reference to an existing sharable QP.
|
|
* @xrcd - XRC domain
|
|
* @qp_open_attr: Attributes identifying the QP to open.
|
|
*
|
|
* Returns a reference to a sharable QP.
|
|
*/
|
|
struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
|
|
struct ib_qp_open_attr *qp_open_attr);
|
|
|
|
/**
|
|
* ib_close_qp - Release an external reference to a QP.
|
|
* @qp: The QP handle to release
|
|
*
|
|
* The opened QP handle is released by the caller. The underlying
|
|
* shared QP is not destroyed until all internal references are released.
|
|
*/
|
|
int ib_close_qp(struct ib_qp *qp);
|
|
|
|
/**
|
|
* ib_post_send - Posts a list of work requests to the send queue of
|
|
* the specified QP.
|
|
* @qp: The QP to post the work request on.
|
|
* @send_wr: A list of work requests to post on the send queue.
|
|
* @bad_send_wr: On an immediate failure, this parameter will reference
|
|
* the work request that failed to be posted on the QP.
|
|
*
|
|
* While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
|
|
* error is returned, the QP state shall not be affected,
|
|
* ib_post_send() will return an immediate error after queueing any
|
|
* earlier work requests in the list.
|
|
*/
|
|
static inline int ib_post_send(struct ib_qp *qp,
|
|
struct ib_send_wr *send_wr,
|
|
struct ib_send_wr **bad_send_wr)
|
|
{
|
|
return qp->device->post_send(qp, send_wr, bad_send_wr);
|
|
}
|
|
|
|
/**
|
|
* ib_post_recv - Posts a list of work requests to the receive queue of
|
|
* the specified QP.
|
|
* @qp: The QP to post the work request on.
|
|
* @recv_wr: A list of work requests to post on the receive queue.
|
|
* @bad_recv_wr: On an immediate failure, this parameter will reference
|
|
* the work request that failed to be posted on the QP.
|
|
*/
|
|
static inline int ib_post_recv(struct ib_qp *qp,
|
|
struct ib_recv_wr *recv_wr,
|
|
struct ib_recv_wr **bad_recv_wr)
|
|
{
|
|
return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
|
|
}
|
|
|
|
/**
|
|
* ib_create_cq - Creates a CQ on the specified device.
|
|
* @device: The device on which to create the CQ.
|
|
* @comp_handler: A user-specified callback that is invoked when a
|
|
* completion event occurs on the CQ.
|
|
* @event_handler: A user-specified callback that is invoked when an
|
|
* asynchronous event not associated with a completion occurs on the CQ.
|
|
* @cq_context: Context associated with the CQ returned to the user via
|
|
* the associated completion and event handlers.
|
|
* @cq_attr: The attributes the CQ should be created upon.
|
|
*
|
|
* Users can examine the cq structure to determine the actual CQ size.
|
|
*/
|
|
struct ib_cq *ib_create_cq(struct ib_device *device,
|
|
ib_comp_handler comp_handler,
|
|
void (*event_handler)(struct ib_event *, void *),
|
|
void *cq_context,
|
|
const struct ib_cq_init_attr *cq_attr);
|
|
|
|
/**
|
|
* ib_resize_cq - Modifies the capacity of the CQ.
|
|
* @cq: The CQ to resize.
|
|
* @cqe: The minimum size of the CQ.
|
|
*
|
|
* Users can examine the cq structure to determine the actual CQ size.
|
|
*/
|
|
int ib_resize_cq(struct ib_cq *cq, int cqe);
|
|
|
|
/**
|
|
* ib_modify_cq - Modifies moderation params of the CQ
|
|
* @cq: The CQ to modify.
|
|
* @cq_count: number of CQEs that will trigger an event
|
|
* @cq_period: max period of time in usec before triggering an event
|
|
*
|
|
*/
|
|
int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
|
|
|
|
/**
|
|
* ib_destroy_cq - Destroys the specified CQ.
|
|
* @cq: The CQ to destroy.
|
|
*/
|
|
int ib_destroy_cq(struct ib_cq *cq);
|
|
|
|
/**
|
|
* ib_poll_cq - poll a CQ for completion(s)
|
|
* @cq:the CQ being polled
|
|
* @num_entries:maximum number of completions to return
|
|
* @wc:array of at least @num_entries &struct ib_wc where completions
|
|
* will be returned
|
|
*
|
|
* Poll a CQ for (possibly multiple) completions. If the return value
|
|
* is < 0, an error occurred. If the return value is >= 0, it is the
|
|
* number of completions returned. If the return value is
|
|
* non-negative and < num_entries, then the CQ was emptied.
|
|
*/
|
|
static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
|
|
struct ib_wc *wc)
|
|
{
|
|
return cq->device->poll_cq(cq, num_entries, wc);
|
|
}
|
|
|
|
/**
|
|
* ib_peek_cq - Returns the number of unreaped completions currently
|
|
* on the specified CQ.
|
|
* @cq: The CQ to peek.
|
|
* @wc_cnt: A minimum number of unreaped completions to check for.
|
|
*
|
|
* If the number of unreaped completions is greater than or equal to wc_cnt,
|
|
* this function returns wc_cnt, otherwise, it returns the actual number of
|
|
* unreaped completions.
|
|
*/
|
|
int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
|
|
|
|
/**
|
|
* ib_req_notify_cq - Request completion notification on a CQ.
|
|
* @cq: The CQ to generate an event for.
|
|
* @flags:
|
|
* Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
|
|
* to request an event on the next solicited event or next work
|
|
* completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
|
|
* may also be |ed in to request a hint about missed events, as
|
|
* described below.
|
|
*
|
|
* Return Value:
|
|
* < 0 means an error occurred while requesting notification
|
|
* == 0 means notification was requested successfully, and if
|
|
* IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
|
|
* were missed and it is safe to wait for another event. In
|
|
* this case is it guaranteed that any work completions added
|
|
* to the CQ since the last CQ poll will trigger a completion
|
|
* notification event.
|
|
* > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
|
|
* in. It means that the consumer must poll the CQ again to
|
|
* make sure it is empty to avoid missing an event because of a
|
|
* race between requesting notification and an entry being
|
|
* added to the CQ. This return value means it is possible
|
|
* (but not guaranteed) that a work completion has been added
|
|
* to the CQ since the last poll without triggering a
|
|
* completion notification event.
|
|
*/
|
|
static inline int ib_req_notify_cq(struct ib_cq *cq,
|
|
enum ib_cq_notify_flags flags)
|
|
{
|
|
return cq->device->req_notify_cq(cq, flags);
|
|
}
|
|
|
|
/**
|
|
* ib_req_ncomp_notif - Request completion notification when there are
|
|
* at least the specified number of unreaped completions on the CQ.
|
|
* @cq: The CQ to generate an event for.
|
|
* @wc_cnt: The number of unreaped completions that should be on the
|
|
* CQ before an event is generated.
|
|
*/
|
|
static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
|
|
{
|
|
return cq->device->req_ncomp_notif ?
|
|
cq->device->req_ncomp_notif(cq, wc_cnt) :
|
|
-ENOSYS;
|
|
}
|
|
|
|
/**
|
|
* ib_get_dma_mr - Returns a memory region for system memory that is
|
|
* usable for DMA.
|
|
* @pd: The protection domain associated with the memory region.
|
|
* @mr_access_flags: Specifies the memory access rights.
|
|
*
|
|
* Note that the ib_dma_*() functions defined below must be used
|
|
* to create/destroy addresses used with the Lkey or Rkey returned
|
|
* by ib_get_dma_mr().
|
|
*/
|
|
struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
|
|
|
|
/**
|
|
* ib_dma_mapping_error - check a DMA addr for error
|
|
* @dev: The device for which the dma_addr was created
|
|
* @dma_addr: The DMA address to check
|
|
*/
|
|
static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
|
|
{
|
|
if (dev->dma_ops)
|
|
return dev->dma_ops->mapping_error(dev, dma_addr);
|
|
return dma_mapping_error(dev->dma_device, dma_addr);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_map_single - Map a kernel virtual address to DMA address
|
|
* @dev: The device for which the dma_addr is to be created
|
|
* @cpu_addr: The kernel virtual address
|
|
* @size: The size of the region in bytes
|
|
* @direction: The direction of the DMA
|
|
*/
|
|
static inline u64 ib_dma_map_single(struct ib_device *dev,
|
|
void *cpu_addr, size_t size,
|
|
enum dma_data_direction direction)
|
|
{
|
|
if (dev->dma_ops)
|
|
return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
|
|
return dma_map_single(dev->dma_device, cpu_addr, size, direction);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
|
|
* @dev: The device for which the DMA address was created
|
|
* @addr: The DMA address
|
|
* @size: The size of the region in bytes
|
|
* @direction: The direction of the DMA
|
|
*/
|
|
static inline void ib_dma_unmap_single(struct ib_device *dev,
|
|
u64 addr, size_t size,
|
|
enum dma_data_direction direction)
|
|
{
|
|
if (dev->dma_ops)
|
|
dev->dma_ops->unmap_single(dev, addr, size, direction);
|
|
else
|
|
dma_unmap_single(dev->dma_device, addr, size, direction);
|
|
}
|
|
|
|
static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
|
|
void *cpu_addr, size_t size,
|
|
enum dma_data_direction direction,
|
|
struct dma_attrs *attrs)
|
|
{
|
|
return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
|
|
direction, attrs);
|
|
}
|
|
|
|
static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
|
|
u64 addr, size_t size,
|
|
enum dma_data_direction direction,
|
|
struct dma_attrs *attrs)
|
|
{
|
|
return dma_unmap_single_attrs(dev->dma_device, addr, size,
|
|
direction, attrs);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_map_page - Map a physical page to DMA address
|
|
* @dev: The device for which the dma_addr is to be created
|
|
* @page: The page to be mapped
|
|
* @offset: The offset within the page
|
|
* @size: The size of the region in bytes
|
|
* @direction: The direction of the DMA
|
|
*/
|
|
static inline u64 ib_dma_map_page(struct ib_device *dev,
|
|
struct page *page,
|
|
unsigned long offset,
|
|
size_t size,
|
|
enum dma_data_direction direction)
|
|
{
|
|
if (dev->dma_ops)
|
|
return dev->dma_ops->map_page(dev, page, offset, size, direction);
|
|
return dma_map_page(dev->dma_device, page, offset, size, direction);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
|
|
* @dev: The device for which the DMA address was created
|
|
* @addr: The DMA address
|
|
* @size: The size of the region in bytes
|
|
* @direction: The direction of the DMA
|
|
*/
|
|
static inline void ib_dma_unmap_page(struct ib_device *dev,
|
|
u64 addr, size_t size,
|
|
enum dma_data_direction direction)
|
|
{
|
|
if (dev->dma_ops)
|
|
dev->dma_ops->unmap_page(dev, addr, size, direction);
|
|
else
|
|
dma_unmap_page(dev->dma_device, addr, size, direction);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_map_sg - Map a scatter/gather list to DMA addresses
|
|
* @dev: The device for which the DMA addresses are to be created
|
|
* @sg: The array of scatter/gather entries
|
|
* @nents: The number of scatter/gather entries
|
|
* @direction: The direction of the DMA
|
|
*/
|
|
static inline int ib_dma_map_sg(struct ib_device *dev,
|
|
struct scatterlist *sg, int nents,
|
|
enum dma_data_direction direction)
|
|
{
|
|
if (dev->dma_ops)
|
|
return dev->dma_ops->map_sg(dev, sg, nents, direction);
|
|
return dma_map_sg(dev->dma_device, sg, nents, direction);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
|
|
* @dev: The device for which the DMA addresses were created
|
|
* @sg: The array of scatter/gather entries
|
|
* @nents: The number of scatter/gather entries
|
|
* @direction: The direction of the DMA
|
|
*/
|
|
static inline void ib_dma_unmap_sg(struct ib_device *dev,
|
|
struct scatterlist *sg, int nents,
|
|
enum dma_data_direction direction)
|
|
{
|
|
if (dev->dma_ops)
|
|
dev->dma_ops->unmap_sg(dev, sg, nents, direction);
|
|
else
|
|
dma_unmap_sg(dev->dma_device, sg, nents, direction);
|
|
}
|
|
|
|
static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
|
|
struct scatterlist *sg, int nents,
|
|
enum dma_data_direction direction,
|
|
struct dma_attrs *attrs)
|
|
{
|
|
return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
|
|
}
|
|
|
|
static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
|
|
struct scatterlist *sg, int nents,
|
|
enum dma_data_direction direction,
|
|
struct dma_attrs *attrs)
|
|
{
|
|
dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
|
|
}
|
|
/**
|
|
* ib_sg_dma_address - Return the DMA address from a scatter/gather entry
|
|
* @dev: The device for which the DMA addresses were created
|
|
* @sg: The scatter/gather entry
|
|
*
|
|
* Note: this function is obsolete. To do: change all occurrences of
|
|
* ib_sg_dma_address() into sg_dma_address().
|
|
*/
|
|
static inline u64 ib_sg_dma_address(struct ib_device *dev,
|
|
struct scatterlist *sg)
|
|
{
|
|
return sg_dma_address(sg);
|
|
}
|
|
|
|
/**
|
|
* ib_sg_dma_len - Return the DMA length from a scatter/gather entry
|
|
* @dev: The device for which the DMA addresses were created
|
|
* @sg: The scatter/gather entry
|
|
*
|
|
* Note: this function is obsolete. To do: change all occurrences of
|
|
* ib_sg_dma_len() into sg_dma_len().
|
|
*/
|
|
static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
|
|
struct scatterlist *sg)
|
|
{
|
|
return sg_dma_len(sg);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
|
|
* @dev: The device for which the DMA address was created
|
|
* @addr: The DMA address
|
|
* @size: The size of the region in bytes
|
|
* @dir: The direction of the DMA
|
|
*/
|
|
static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
|
|
u64 addr,
|
|
size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
if (dev->dma_ops)
|
|
dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
|
|
else
|
|
dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
|
|
* @dev: The device for which the DMA address was created
|
|
* @addr: The DMA address
|
|
* @size: The size of the region in bytes
|
|
* @dir: The direction of the DMA
|
|
*/
|
|
static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
|
|
u64 addr,
|
|
size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
if (dev->dma_ops)
|
|
dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
|
|
else
|
|
dma_sync_single_for_device(dev->dma_device, addr, size, dir);
|
|
}
|
|
|
|
/**
|
|
* ib_dma_alloc_coherent - Allocate memory and map it for DMA
|
|
* @dev: The device for which the DMA address is requested
|
|
* @size: The size of the region to allocate in bytes
|
|
* @dma_handle: A pointer for returning the DMA address of the region
|
|
* @flag: memory allocator flags
|
|
*/
|
|
static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
|
|
size_t size,
|
|
u64 *dma_handle,
|
|
gfp_t flag)
|
|
{
|
|
if (dev->dma_ops)
|
|
return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
|
|
else {
|
|
dma_addr_t handle;
|
|
void *ret;
|
|
|
|
ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
|
|
*dma_handle = handle;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
|
|
* @dev: The device for which the DMA addresses were allocated
|
|
* @size: The size of the region
|
|
* @cpu_addr: the address returned by ib_dma_alloc_coherent()
|
|
* @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
|
|
*/
|
|
static inline void ib_dma_free_coherent(struct ib_device *dev,
|
|
size_t size, void *cpu_addr,
|
|
u64 dma_handle)
|
|
{
|
|
if (dev->dma_ops)
|
|
dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
|
|
else
|
|
dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
|
|
}
|
|
|
|
/**
|
|
* ib_query_mr - Retrieves information about a specific memory region.
|
|
* @mr: The memory region to retrieve information about.
|
|
* @mr_attr: The attributes of the specified memory region.
|
|
*/
|
|
int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
|
|
|
|
/**
|
|
* ib_dereg_mr - Deregisters a memory region and removes it from the
|
|
* HCA translation table.
|
|
* @mr: The memory region to deregister.
|
|
*
|
|
* This function can fail, if the memory region has memory windows bound to it.
|
|
*/
|
|
int ib_dereg_mr(struct ib_mr *mr);
|
|
|
|
struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
|
|
enum ib_mr_type mr_type,
|
|
u32 max_num_sg);
|
|
|
|
/**
|
|
* ib_alloc_fast_reg_page_list - Allocates a page list array
|
|
* @device - ib device pointer.
|
|
* @page_list_len - size of the page list array to be allocated.
|
|
*
|
|
* This allocates and returns a struct ib_fast_reg_page_list * and a
|
|
* page_list array that is at least page_list_len in size. The actual
|
|
* size is returned in max_page_list_len. The caller is responsible
|
|
* for initializing the contents of the page_list array before posting
|
|
* a send work request with the IB_WC_FAST_REG_MR opcode.
|
|
*
|
|
* The page_list array entries must be translated using one of the
|
|
* ib_dma_*() functions just like the addresses passed to
|
|
* ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct
|
|
* ib_fast_reg_page_list must not be modified by the caller until the
|
|
* IB_WC_FAST_REG_MR work request completes.
|
|
*/
|
|
struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(
|
|
struct ib_device *device, int page_list_len);
|
|
|
|
/**
|
|
* ib_free_fast_reg_page_list - Deallocates a previously allocated
|
|
* page list array.
|
|
* @page_list - struct ib_fast_reg_page_list pointer to be deallocated.
|
|
*/
|
|
void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
|
|
|
|
/**
|
|
* ib_update_fast_reg_key - updates the key portion of the fast_reg MR
|
|
* R_Key and L_Key.
|
|
* @mr - struct ib_mr pointer to be updated.
|
|
* @newkey - new key to be used.
|
|
*/
|
|
static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
|
|
{
|
|
mr->lkey = (mr->lkey & 0xffffff00) | newkey;
|
|
mr->rkey = (mr->rkey & 0xffffff00) | newkey;
|
|
}
|
|
|
|
/**
|
|
* ib_inc_rkey - increments the key portion of the given rkey. Can be used
|
|
* for calculating a new rkey for type 2 memory windows.
|
|
* @rkey - the rkey to increment.
|
|
*/
|
|
static inline u32 ib_inc_rkey(u32 rkey)
|
|
{
|
|
const u32 mask = 0x000000ff;
|
|
return ((rkey + 1) & mask) | (rkey & ~mask);
|
|
}
|
|
|
|
/**
|
|
* ib_alloc_mw - Allocates a memory window.
|
|
* @pd: The protection domain associated with the memory window.
|
|
* @type: The type of the memory window (1 or 2).
|
|
*/
|
|
struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type);
|
|
|
|
/**
|
|
* ib_bind_mw - Posts a work request to the send queue of the specified
|
|
* QP, which binds the memory window to the given address range and
|
|
* remote access attributes.
|
|
* @qp: QP to post the bind work request on.
|
|
* @mw: The memory window to bind.
|
|
* @mw_bind: Specifies information about the memory window, including
|
|
* its address range, remote access rights, and associated memory region.
|
|
*
|
|
* If there is no immediate error, the function will update the rkey member
|
|
* of the mw parameter to its new value. The bind operation can still fail
|
|
* asynchronously.
|
|
*/
|
|
static inline int ib_bind_mw(struct ib_qp *qp,
|
|
struct ib_mw *mw,
|
|
struct ib_mw_bind *mw_bind)
|
|
{
|
|
/* XXX reference counting in corresponding MR? */
|
|
return mw->device->bind_mw ?
|
|
mw->device->bind_mw(qp, mw, mw_bind) :
|
|
-ENOSYS;
|
|
}
|
|
|
|
/**
|
|
* ib_dealloc_mw - Deallocates a memory window.
|
|
* @mw: The memory window to deallocate.
|
|
*/
|
|
int ib_dealloc_mw(struct ib_mw *mw);
|
|
|
|
/**
|
|
* ib_alloc_fmr - Allocates a unmapped fast memory region.
|
|
* @pd: The protection domain associated with the unmapped region.
|
|
* @mr_access_flags: Specifies the memory access rights.
|
|
* @fmr_attr: Attributes of the unmapped region.
|
|
*
|
|
* A fast memory region must be mapped before it can be used as part of
|
|
* a work request.
|
|
*/
|
|
struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
|
|
int mr_access_flags,
|
|
struct ib_fmr_attr *fmr_attr);
|
|
|
|
/**
|
|
* ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
|
|
* @fmr: The fast memory region to associate with the pages.
|
|
* @page_list: An array of physical pages to map to the fast memory region.
|
|
* @list_len: The number of pages in page_list.
|
|
* @iova: The I/O virtual address to use with the mapped region.
|
|
*/
|
|
static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
|
|
u64 *page_list, int list_len,
|
|
u64 iova)
|
|
{
|
|
return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
|
|
}
|
|
|
|
/**
|
|
* ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
|
|
* @fmr_list: A linked list of fast memory regions to unmap.
|
|
*/
|
|
int ib_unmap_fmr(struct list_head *fmr_list);
|
|
|
|
/**
|
|
* ib_dealloc_fmr - Deallocates a fast memory region.
|
|
* @fmr: The fast memory region to deallocate.
|
|
*/
|
|
int ib_dealloc_fmr(struct ib_fmr *fmr);
|
|
|
|
/**
|
|
* ib_attach_mcast - Attaches the specified QP to a multicast group.
|
|
* @qp: QP to attach to the multicast group. The QP must be type
|
|
* IB_QPT_UD.
|
|
* @gid: Multicast group GID.
|
|
* @lid: Multicast group LID in host byte order.
|
|
*
|
|
* In order to send and receive multicast packets, subnet
|
|
* administration must have created the multicast group and configured
|
|
* the fabric appropriately. The port associated with the specified
|
|
* QP must also be a member of the multicast group.
|
|
*/
|
|
int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
|
|
|
|
/**
|
|
* ib_detach_mcast - Detaches the specified QP from a multicast group.
|
|
* @qp: QP to detach from the multicast group.
|
|
* @gid: Multicast group GID.
|
|
* @lid: Multicast group LID in host byte order.
|
|
*/
|
|
int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
|
|
|
|
/**
|
|
* ib_alloc_xrcd - Allocates an XRC domain.
|
|
* @device: The device on which to allocate the XRC domain.
|
|
*/
|
|
struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
|
|
|
|
/**
|
|
* ib_dealloc_xrcd - Deallocates an XRC domain.
|
|
* @xrcd: The XRC domain to deallocate.
|
|
*/
|
|
int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
|
|
|
|
struct ib_flow *ib_create_flow(struct ib_qp *qp,
|
|
struct ib_flow_attr *flow_attr, int domain);
|
|
int ib_destroy_flow(struct ib_flow *flow_id);
|
|
|
|
static inline int ib_check_mr_access(int flags)
|
|
{
|
|
/*
|
|
* Local write permission is required if remote write or
|
|
* remote atomic permission is also requested.
|
|
*/
|
|
if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
|
|
!(flags & IB_ACCESS_LOCAL_WRITE))
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ib_check_mr_status: lightweight check of MR status.
|
|
* This routine may provide status checks on a selected
|
|
* ib_mr. first use is for signature status check.
|
|
*
|
|
* @mr: A memory region.
|
|
* @check_mask: Bitmask of which checks to perform from
|
|
* ib_mr_status_check enumeration.
|
|
* @mr_status: The container of relevant status checks.
|
|
* failed checks will be indicated in the status bitmask
|
|
* and the relevant info shall be in the error item.
|
|
*/
|
|
int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
|
|
struct ib_mr_status *mr_status);
|
|
|
|
struct net_device *ib_get_net_dev_by_params(struct ib_device *dev, u8 port,
|
|
u16 pkey, const union ib_gid *gid,
|
|
const struct sockaddr *addr);
|
|
|
|
#endif /* IB_VERBS_H */
|