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5.3 Merge window RDMA pull request

Browse source 
A smaller cycle this time. Notably we see another new driver, 'Soft
 iWarp', and the deletion of an ancient unused driver for nes.
 
 - Revise and simplify the signature offload RDMA MR APIs
 
 - More progress on hoisting object allocation boiler plate code out of the
   drivers
 
 - Driver bug fixes and revisions for hns, hfi1, efa, cxgb4, qib, i40iw
 
 - Tree wide cleanups: struct_size, put_user_page, xarray, rst doc conversion
 
 - Removal of obsolete ib_ucm chardev and nes driver
 
 - netlink based discovery of chardevs and autoloading of the modules
   providing them
 
 - Move more of the rdamvt/hfi1 uapi to include/uapi/rdma
 
 - New driver 'siw' for software based iWarp running on top of netdev,
   much like rxe's software RoCE.
 
 - mlx5 feature to report events in their raw devx format to userspace
 
 - Expose per-object counters through rdma tool
 
 - Adaptive interrupt moderation for RDMA (DIM), sharing the DIM core
   from netdev
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "A smaller cycle this time. Notably we see another new driver, 'Soft
  iWarp', and the deletion of an ancient unused driver for nes.

   - Revise and simplify the signature offload RDMA MR APIs

   - More progress on hoisting object allocation boiler plate code out
     of the drivers

   - Driver bug fixes and revisions for hns, hfi1, efa, cxgb4, qib,
     i40iw

   - Tree wide cleanups: struct_size, put_user_page, xarray, rst doc
     conversion

   - Removal of obsolete ib_ucm chardev and nes driver

   - netlink based discovery of chardevs and autoloading of the modules
     providing them

   - Move more of the rdamvt/hfi1 uapi to include/uapi/rdma

   - New driver 'siw' for software based iWarp running on top of netdev,
     much like rxe's software RoCE.

   - mlx5 feature to report events in their raw devx format to userspace

   - Expose per-object counters through rdma tool

   - Adaptive interrupt moderation for RDMA (DIM), sharing the DIM core
     from netdev"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (194 commits)
  RMDA/siw: Require a 64 bit arch
  RDMA/siw: Mark expected switch fall-throughs
  RDMA/core: Fix -Wunused-const-variable warnings
  rdma/siw: Remove set but not used variable 's'
  rdma/siw: Add missing dependencies on LIBCRC32C and DMA_VIRT_OPS
  RDMA/siw: Add missing rtnl_lock around access to ifa
  rdma/siw: Use proper enumerated type in map_cqe_status
  RDMA/siw: Remove unnecessary kthread create/destroy printouts
  IB/rdmavt: Fix variable shadowing issue in rvt_create_cq
  RDMA/core: Fix race when resolving IP address
  RDMA/core: Make rdma_counter.h compile stand alone
  IB/core: Work on the caller socket net namespace in nldev_newlink()
  RDMA/rxe: Fill in wc byte_len with IB_WC_RECV_RDMA_WITH_IMM
  RDMA/mlx5: Set RDMA DIM to be enabled by default
  RDMA/nldev: Added configuration of RDMA dynamic interrupt moderation to netlink
  RDMA/core: Provide RDMA DIM support for ULPs
  linux/dim: Implement RDMA adaptive moderation (DIM)
  IB/mlx5: Report correctly tag matching rendezvous capability
  docs: infiniband: add it to the driver-api bookset
  IB/mlx5: Implement VHCA tunnel mechanism in DEVX
  ...
This commit is contained in:
Linus Torvalds 2019-07-15 20:38:15 -07:00
commit 2a3c389a0f
221 changed files with 18855 additions and 24841 deletions
Download patch file Download diff file Expand all files Collapse all files

326
include/uapi/rdma/ib_user_cm.h
View file

@ -1,326 +0,0 @@
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
/*
* Copyright (c) 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005 Intel Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef IB_USER_CM_H
#define IB_USER_CM_H
#include <linux/types.h>
#include <rdma/ib_user_sa.h>
#define IB_USER_CM_ABI_VERSION 5
enum {
IB_USER_CM_CMD_CREATE_ID,
IB_USER_CM_CMD_DESTROY_ID,
IB_USER_CM_CMD_ATTR_ID,
IB_USER_CM_CMD_LISTEN,
IB_USER_CM_CMD_NOTIFY,
IB_USER_CM_CMD_SEND_REQ,
IB_USER_CM_CMD_SEND_REP,
IB_USER_CM_CMD_SEND_RTU,
IB_USER_CM_CMD_SEND_DREQ,
IB_USER_CM_CMD_SEND_DREP,
IB_USER_CM_CMD_SEND_REJ,
IB_USER_CM_CMD_SEND_MRA,
IB_USER_CM_CMD_SEND_LAP,
IB_USER_CM_CMD_SEND_APR,
IB_USER_CM_CMD_SEND_SIDR_REQ,
IB_USER_CM_CMD_SEND_SIDR_REP,
IB_USER_CM_CMD_EVENT,
IB_USER_CM_CMD_INIT_QP_ATTR,
};
/*
* command ABI structures.
*/
struct ib_ucm_cmd_hdr {
__u32 cmd;
__u16 in;
__u16 out;
};
struct ib_ucm_create_id {
__aligned_u64 uid;
__aligned_u64 response;
};
struct ib_ucm_create_id_resp {
__u32 id;
};
struct ib_ucm_destroy_id {
__aligned_u64 response;
__u32 id;
__u32 reserved;
};
struct ib_ucm_destroy_id_resp {
__u32 events_reported;
};
struct ib_ucm_attr_id {
__aligned_u64 response;
__u32 id;
__u32 reserved;
};
struct ib_ucm_attr_id_resp {
__be64 service_id;
__be64 service_mask;
__be32 local_id;
__be32 remote_id;
};
struct ib_ucm_init_qp_attr {
__aligned_u64 response;
__u32 id;
__u32 qp_state;
};
struct ib_ucm_listen {
__be64 service_id;
__be64 service_mask;
__u32 id;
__u32 reserved;
};
struct ib_ucm_notify {
__u32 id;
__u32 event;
};
struct ib_ucm_private_data {
__aligned_u64 data;
__u32 id;
__u8 len;
__u8 reserved[3];
};
struct ib_ucm_req {
__u32 id;
__u32 qpn;
__u32 qp_type;
__u32 psn;
__be64 sid;
__aligned_u64 data;
__aligned_u64 primary_path;
__aligned_u64 alternate_path;
__u8 len;
__u8 peer_to_peer;
__u8 responder_resources;
__u8 initiator_depth;
__u8 remote_cm_response_timeout;
__u8 flow_control;
__u8 local_cm_response_timeout;
__u8 retry_count;
__u8 rnr_retry_count;
__u8 max_cm_retries;
__u8 srq;
__u8 reserved[5];
};
struct ib_ucm_rep {
__aligned_u64 uid;
__aligned_u64 data;
__u32 id;
__u32 qpn;
__u32 psn;
__u8 len;
__u8 responder_resources;
__u8 initiator_depth;
__u8 target_ack_delay;
__u8 failover_accepted;
__u8 flow_control;
__u8 rnr_retry_count;
__u8 srq;
__u8 reserved[4];
};
struct ib_ucm_info {
__u32 id;
__u32 status;
__aligned_u64 info;
__aligned_u64 data;
__u8 info_len;
__u8 data_len;
__u8 reserved[6];
};
struct ib_ucm_mra {
__aligned_u64 data;
__u32 id;
__u8 len;
__u8 timeout;
__u8 reserved[2];
};
struct ib_ucm_lap {
__aligned_u64 path;
__aligned_u64 data;
__u32 id;
__u8 len;
__u8 reserved[3];
};
struct ib_ucm_sidr_req {
__u32 id;
__u32 timeout;
__be64 sid;
__aligned_u64 data;
__aligned_u64 path;
__u16 reserved_pkey;
__u8 len;
__u8 max_cm_retries;
__u8 reserved[4];
};
struct ib_ucm_sidr_rep {
__u32 id;
__u32 qpn;
__u32 qkey;
__u32 status;
__aligned_u64 info;
__aligned_u64 data;
__u8 info_len;
__u8 data_len;
__u8 reserved[6];
};
/*
* event notification ABI structures.
*/
struct ib_ucm_event_get {
__aligned_u64 response;
__aligned_u64 data;
__aligned_u64 info;
__u8 data_len;
__u8 info_len;
__u8 reserved[6];
};
struct ib_ucm_req_event_resp {
struct ib_user_path_rec primary_path;
struct ib_user_path_rec alternate_path;
__be64 remote_ca_guid;
__u32 remote_qkey;
__u32 remote_qpn;
__u32 qp_type;
__u32 starting_psn;
__u8 responder_resources;
__u8 initiator_depth;
__u8 local_cm_response_timeout;
__u8 flow_control;
__u8 remote_cm_response_timeout;
__u8 retry_count;
__u8 rnr_retry_count;
__u8 srq;
__u8 port;
__u8 reserved[7];
};
struct ib_ucm_rep_event_resp {
__be64 remote_ca_guid;
__u32 remote_qkey;
__u32 remote_qpn;
__u32 starting_psn;
__u8 responder_resources;
__u8 initiator_depth;
__u8 target_ack_delay;
__u8 failover_accepted;
__u8 flow_control;
__u8 rnr_retry_count;
__u8 srq;
__u8 reserved[5];
};
struct ib_ucm_rej_event_resp {
__u32 reason;
/* ari in ib_ucm_event_get info field. */
};
struct ib_ucm_mra_event_resp {
__u8 timeout;
__u8 reserved[3];
};
struct ib_ucm_lap_event_resp {
struct ib_user_path_rec path;
};
struct ib_ucm_apr_event_resp {
__u32 status;
/* apr info in ib_ucm_event_get info field. */
};
struct ib_ucm_sidr_req_event_resp {
__u16 pkey;
__u8 port;
__u8 reserved;
};
struct ib_ucm_sidr_rep_event_resp {
__u32 status;
__u32 qkey;
__u32 qpn;
/* info in ib_ucm_event_get info field. */
};
#define IB_UCM_PRES_DATA 0x01
#define IB_UCM_PRES_INFO 0x02
#define IB_UCM_PRES_PRIMARY 0x04
#define IB_UCM_PRES_ALTERNATE 0x08
struct ib_ucm_event_resp {
__aligned_u64 uid;
__u32 id;
__u32 event;
__u32 present;
__u32 reserved;
union {
struct ib_ucm_req_event_resp req_resp;
struct ib_ucm_rep_event_resp rep_resp;
struct ib_ucm_rej_event_resp rej_resp;
struct ib_ucm_mra_event_resp mra_resp;
struct ib_ucm_lap_event_resp lap_resp;
struct ib_ucm_apr_event_resp apr_resp;
struct ib_ucm_sidr_req_event_resp sidr_req_resp;
struct ib_ucm_sidr_rep_event_resp sidr_rep_resp;
__u32 send_status;
} u;
};
#endif /* IB_USER_CM_H */

19
include/uapi/rdma/mlx5_user_ioctl_cmds.h
View file

@ -51,6 +51,7 @@ enum mlx5_ib_devx_methods {
MLX5_IB_METHOD_DEVX_OTHER = (1U << UVERBS_ID_NS_SHIFT),
MLX5_IB_METHOD_DEVX_QUERY_UAR,
MLX5_IB_METHOD_DEVX_QUERY_EQN,
MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT,
};
enum mlx5_ib_devx_other_attrs {
@ -93,6 +94,14 @@ enum mlx5_ib_devx_obj_query_async_attrs {
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN,
};
enum mlx5_ib_devx_subscribe_event_attrs {
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE,
};
enum mlx5_ib_devx_query_eqn_attrs {
MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC = (1U << UVERBS_ID_NS_SHIFT),
MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
@ -127,16 +136,26 @@ enum mlx5_ib_devx_async_cmd_fd_alloc_attrs {
MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
};
enum mlx5_ib_devx_async_event_fd_alloc_attrs {
MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE = (1U << UVERBS_ID_NS_SHIFT),
MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS,
};
enum mlx5_ib_devx_async_cmd_fd_methods {
MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC = (1U << UVERBS_ID_NS_SHIFT),
};
enum mlx5_ib_devx_async_event_fd_methods {
MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC = (1U << UVERBS_ID_NS_SHIFT),
};
enum mlx5_ib_objects {
MLX5_IB_OBJECT_DEVX = (1U << UVERBS_ID_NS_SHIFT),
MLX5_IB_OBJECT_DEVX_OBJ,
MLX5_IB_OBJECT_DEVX_UMEM,
MLX5_IB_OBJECT_FLOW_MATCHER,
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
};
enum mlx5_ib_flow_matcher_create_attrs {

9
include/uapi/rdma/mlx5_user_ioctl_verbs.h
View file

@ -63,5 +63,14 @@ enum mlx5_ib_uapi_dm_type {
MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM,
};
enum mlx5_ib_uapi_devx_create_event_channel_flags {
MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA = 1 << 0,
};
struct mlx5_ib_uapi_devx_async_event_hdr {
__aligned_u64 cookie;
__u8 out_data[];
};
#endif

86
include/uapi/rdma/rdma_netlink.h
View file

@ -147,6 +147,18 @@ enum {
IWPM_NLA_HELLO_MAX
};
/* For RDMA_NLDEV_ATTR_DEV_NODE_TYPE */
enum {
/* IB values map to NodeInfo:NodeType. */
RDMA_NODE_IB_CA = 1,
RDMA_NODE_IB_SWITCH,
RDMA_NODE_IB_ROUTER,
RDMA_NODE_RNIC,
RDMA_NODE_USNIC,
RDMA_NODE_USNIC_UDP,
RDMA_NODE_UNSPECIFIED,
};
/*
* Local service operations:
* RESOLVE - The client requests the local service to resolve a path.
@ -267,11 +279,15 @@ enum rdma_nldev_command {
RDMA_NLDEV_CMD_RES_PD_GET, /* can dump */
RDMA_NLDEV_NUM_OPS
};
RDMA_NLDEV_CMD_GET_CHARDEV,
enum {
RDMA_NLDEV_ATTR_ENTRY_STRLEN = 16,
RDMA_NLDEV_CMD_STAT_SET,
RDMA_NLDEV_CMD_STAT_GET, /* can dump */
RDMA_NLDEV_CMD_STAT_DEL,
RDMA_NLDEV_NUM_OPS
};
enum rdma_nldev_print_type {
@ -478,10 +494,72 @@ enum rdma_nldev_attr {
* File descriptor handle of the net namespace object
*/
RDMA_NLDEV_NET_NS_FD, /* u32 */
/*
* Information about a chardev.
* CHARDEV_TYPE is the name of the chardev ABI (ie uverbs, umad, etc)
* CHARDEV_ABI signals the ABI revision (historical)
* CHARDEV_NAME is the kernel name for the /dev/ file (no directory)
* CHARDEV is the 64 bit dev_t for the inode
*/
RDMA_NLDEV_ATTR_CHARDEV_TYPE, /* string */
RDMA_NLDEV_ATTR_CHARDEV_NAME, /* string */
RDMA_NLDEV_ATTR_CHARDEV_ABI, /* u64 */
RDMA_NLDEV_ATTR_CHARDEV, /* u64 */
RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID, /* u64 */
/*
* Counter-specific attributes.
*/
RDMA_NLDEV_ATTR_STAT_MODE, /* u32 */
RDMA_NLDEV_ATTR_STAT_RES, /* u32 */
RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, /* u32 */
RDMA_NLDEV_ATTR_STAT_COUNTER, /* nested table */
RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY, /* nested table */
RDMA_NLDEV_ATTR_STAT_COUNTER_ID, /* u32 */
RDMA_NLDEV_ATTR_STAT_HWCOUNTERS, /* nested table */
RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY, /* nested table */
RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME, /* string */
RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE, /* u64 */
/*
* CQ adaptive moderatio (DIM)
*/
RDMA_NLDEV_ATTR_DEV_DIM, /* u8 */
/*
* Always the end
*/
RDMA_NLDEV_ATTR_MAX
};
/*
* Supported counter bind modes. All modes are mutual-exclusive.
*/
enum rdma_nl_counter_mode {
RDMA_COUNTER_MODE_NONE,
/*
* A qp is bound with a counter automatically during initialization
* based on the auto mode (e.g., qp type, ...)
*/
RDMA_COUNTER_MODE_AUTO,
/*
* Which qp are bound with which counter is explicitly specified
* by the user
*/
RDMA_COUNTER_MODE_MANUAL,
/*
* Always the end
*/
RDMA_COUNTER_MODE_MAX,
};
/*
* Supported criteria in counter auto mode.
* Currently only "qp type" is supported
*/
enum rdma_nl_counter_mask {
RDMA_COUNTER_MASK_QP_TYPE = 1,
};
#endif /* _UAPI_RDMA_NETLINK_H */

1
include/uapi/rdma/rdma_user_ioctl_cmds.h
View file

@ -103,6 +103,7 @@ enum rdma_driver_id {
RDMA_DRIVER_HFI1,
RDMA_DRIVER_QIB,
RDMA_DRIVER_EFA,
RDMA_DRIVER_SIW,
};
#endif

66
include/uapi/rdma/rvt-abi.h Normal file
View file

@ -0,0 +1,66 @@
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/*
* This file contains defines, structures, etc. that are used
* to communicate between kernel and user code.
*/
#ifndef RVT_ABI_USER_H
#define RVT_ABI_USER_H
#include <linux/types.h>
#include <rdma/ib_user_verbs.h>
#ifndef RDMA_ATOMIC_UAPI
#define RDMA_ATOMIC_UAPI(_type, _name) struct{ _type val; } _name
#endif
struct rvt_wqe_sge {
__aligned_u64 addr;
__u32 length;
__u32 lkey;
};
/*
* This structure is used to contain the head pointer, tail pointer,
* and completion queue entries as a single memory allocation so
* it can be mmap'ed into user space.
*/
struct rvt_cq_wc {
/* index of next entry to fill */
RDMA_ATOMIC_UAPI(__u32, head);
/* index of next ib_poll_cq() entry */
RDMA_ATOMIC_UAPI(__u32, tail);
/* these are actually size ibcq.cqe + 1 */
struct ib_uverbs_wc uqueue[];
};
/*
* Receive work request queue entry.
* The size of the sg_list is determined when the QP (or SRQ) is created
* and stored in qp->r_rq.max_sge (or srq->rq.max_sge).
*/
struct rvt_rwqe {
__u64 wr_id;
__u8 num_sge;
__u8 padding[7];
struct rvt_wqe_sge sg_list[];
};
/*
* This structure is used to contain the head pointer, tail pointer,
* and receive work queue entries as a single memory allocation so
* it can be mmap'ed into user space.
* Note that the wq array elements are variable size so you can't
* just index into the array to get the N'th element;
* use get_rwqe_ptr() for user space and rvt_get_rwqe_ptr()
* for kernel space.
*/
struct rvt_rwq {
/* new work requests posted to the head */
RDMA_ATOMIC_UAPI(__u32, head);
/* receives pull requests from here. */
RDMA_ATOMIC_UAPI(__u32, tail);
struct rvt_rwqe wq[];
};
#endif /* RVT_ABI_USER_H */

185
include/uapi/rdma/siw-abi.h Normal file
View file

@ -0,0 +1,185 @@
/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
/* Authors: Bernard Metzler <bmt@zurich.ibm.com> */
/* Copyright (c) 2008-2019, IBM Corporation */
#ifndef _SIW_USER_H
#define _SIW_USER_H
#include <linux/types.h>
#define SIW_NODE_DESC_COMMON "Software iWARP stack"
#define SIW_ABI_VERSION 1
#define SIW_MAX_SGE 6
#define SIW_UOBJ_MAX_KEY 0x08FFFF
#define SIW_INVAL_UOBJ_KEY (SIW_UOBJ_MAX_KEY + 1)
struct siw_uresp_create_cq {
__u32 cq_id;
__u32 num_cqe;
__aligned_u64 cq_key;
};
struct siw_uresp_create_qp {
__u32 qp_id;
__u32 num_sqe;
__u32 num_rqe;
__u32 pad;
__aligned_u64 sq_key;
__aligned_u64 rq_key;
};
struct siw_ureq_reg_mr {
__u8 stag_key;
__u8 reserved[3];
__u32 pad;
};
struct siw_uresp_reg_mr {
__u32 stag;
__u32 pad;
};
struct siw_uresp_create_srq {
__u32 num_rqe;
__u32 pad;
__aligned_u64 srq_key;
};
struct siw_uresp_alloc_ctx {
__u32 dev_id;
__u32 pad;
};
enum siw_opcode {
SIW_OP_WRITE,
SIW_OP_READ,
SIW_OP_READ_LOCAL_INV,
SIW_OP_SEND,
SIW_OP_SEND_WITH_IMM,
SIW_OP_SEND_REMOTE_INV,
/* Unsupported */
SIW_OP_FETCH_AND_ADD,
SIW_OP_COMP_AND_SWAP,
SIW_OP_RECEIVE,
/* provider internal SQE */
SIW_OP_READ_RESPONSE,
/*
* below opcodes valid for
* in-kernel clients only
*/
SIW_OP_INVAL_STAG,
SIW_OP_REG_MR,
SIW_NUM_OPCODES
};
/* Keep it same as ibv_sge to allow for memcpy */
struct siw_sge {
__aligned_u64 laddr;
__u32 length;
__u32 lkey;
};
/*
* Inline data are kept within the work request itself occupying
* the space of sge[1] .. sge[n]. Therefore, inline data cannot be
* supported if SIW_MAX_SGE is below 2 elements.
*/
#define SIW_MAX_INLINE (sizeof(struct siw_sge) * (SIW_MAX_SGE - 1))
#if SIW_MAX_SGE < 2
#error "SIW_MAX_SGE must be at least 2"
#endif
enum siw_wqe_flags {
SIW_WQE_VALID = 1,
SIW_WQE_INLINE = (1 << 1),
SIW_WQE_SIGNALLED = (1 << 2),
SIW_WQE_SOLICITED = (1 << 3),
SIW_WQE_READ_FENCE = (1 << 4),
SIW_WQE_REM_INVAL = (1 << 5),
SIW_WQE_COMPLETED = (1 << 6)
};
/* Send Queue Element */
struct siw_sqe {
__aligned_u64 id;
__u16 flags;
__u8 num_sge;
/* Contains enum siw_opcode values */
__u8 opcode;
__u32 rkey;
union {
__aligned_u64 raddr;
__aligned_u64 base_mr;
};
union {
struct siw_sge sge[SIW_MAX_SGE];
__aligned_u64 access;
};
};
/* Receive Queue Element */
struct siw_rqe {
__aligned_u64 id;
__u16 flags;
__u8 num_sge;
/*
* only used by kernel driver,
* ignored if set by user
*/
__u8 opcode;
__u32 unused;
struct siw_sge sge[SIW_MAX_SGE];
};
enum siw_notify_flags {
SIW_NOTIFY_NOT = (0),
SIW_NOTIFY_SOLICITED = (1 << 0),
SIW_NOTIFY_NEXT_COMPLETION = (1 << 1),
SIW_NOTIFY_MISSED_EVENTS = (1 << 2),
SIW_NOTIFY_ALL = SIW_NOTIFY_SOLICITED | SIW_NOTIFY_NEXT_COMPLETION |
SIW_NOTIFY_MISSED_EVENTS
};
enum siw_wc_status {
SIW_WC_SUCCESS,
SIW_WC_LOC_LEN_ERR,
SIW_WC_LOC_PROT_ERR,
SIW_WC_LOC_QP_OP_ERR,
SIW_WC_WR_FLUSH_ERR,
SIW_WC_BAD_RESP_ERR,
SIW_WC_LOC_ACCESS_ERR,
SIW_WC_REM_ACCESS_ERR,
SIW_WC_REM_INV_REQ_ERR,
SIW_WC_GENERAL_ERR,
SIW_NUM_WC_STATUS
};
struct siw_cqe {
__aligned_u64 id;
__u8 flags;
__u8 opcode;
__u16 status;
__u32 bytes;
union {
__aligned_u64 imm_data;
__u32 inval_stag;
};
/* QP number or QP pointer */
union {
struct ib_qp *base_qp;
__aligned_u64 qp_id;
};
};
/*
* Shared structure between user and kernel
* to control CQ arming.
*/
struct siw_cq_ctrl {
__aligned_u64 notify;
};
#endif