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linux/drivers/infiniband/hw/mlx5/devx.c
Bodong Wang b021d82e25 IB/mlx5: Support querying eswitch functions from DEVX 
Query eswitch functions returns information of the external host
PF(if it exists). It can be used to check if DEVX is running on ECPF.

Reviewed-by: Erez Shitrit <erezsh@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Bodong Wang <bodong@mellanox.com>
Link: https://lore.kernel.org/r/4265925178ab3224dc1d3e3784bb312d808edca5.1661763785.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2022-09-05 14:54:39 +03:00

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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
*/
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_verbs.h>
#include <rdma/uverbs_types.h>
#include <rdma/uverbs_ioctl.h>
#include <rdma/mlx5_user_ioctl_cmds.h>
#include <rdma/mlx5_user_ioctl_verbs.h>
#include <rdma/ib_umem.h>
#include <rdma/uverbs_std_types.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/fs.h>
#include "mlx5_ib.h"
#include "devx.h"
#include "qp.h"
#include <linux/xarray.h>
#define UVERBS_MODULE_NAME mlx5_ib
#include <rdma/uverbs_named_ioctl.h>
static void dispatch_event_fd(struct list_head *fd_list, const void *data);
enum devx_obj_flags {
DEVX_OBJ_FLAGS_INDIRECT_MKEY = 1 << 0,
DEVX_OBJ_FLAGS_DCT = 1 << 1,
DEVX_OBJ_FLAGS_CQ = 1 << 2,
};
struct devx_async_data {
struct mlx5_ib_dev *mdev;
struct list_head list;
struct devx_async_cmd_event_file *ev_file;
struct mlx5_async_work cb_work;
u16 cmd_out_len;
/* must be last field in this structure */
struct mlx5_ib_uapi_devx_async_cmd_hdr hdr;
};
struct devx_async_event_data {
struct list_head list; /* headed in ev_file->event_list */
struct mlx5_ib_uapi_devx_async_event_hdr hdr;
};
/* first level XA value data structure */
struct devx_event {
struct xarray object_ids; /* second XA level, Key = object id */
struct list_head unaffiliated_list;
};
/* second level XA value data structure */
struct devx_obj_event {
struct rcu_head rcu;
struct list_head obj_sub_list;
};
struct devx_event_subscription {
struct list_head file_list; /* headed in ev_file->
* subscribed_events_list
*/
struct list_head xa_list; /* headed in devx_event->unaffiliated_list or
* devx_obj_event->obj_sub_list
*/
struct list_head obj_list; /* headed in devx_object */
struct list_head event_list; /* headed in ev_file->event_list or in
* temp list via subscription
*/
u8 is_cleaned:1;
u32 xa_key_level1;
u32 xa_key_level2;
struct rcu_head rcu;
u64 cookie;
struct devx_async_event_file *ev_file;
struct eventfd_ctx *eventfd;
};
struct devx_async_event_file {
struct ib_uobject uobj;
/* Head of events that are subscribed to this FD */
struct list_head subscribed_events_list;
spinlock_t lock;
wait_queue_head_t poll_wait;
struct list_head event_list;
struct mlx5_ib_dev *dev;
u8 omit_data:1;
u8 is_overflow_err:1;
u8 is_destroyed:1;
};
struct devx_umem {
struct mlx5_core_dev *mdev;
struct ib_umem *umem;
u32 dinlen;
u32 dinbox[MLX5_ST_SZ_DW(destroy_umem_in)];
};
struct devx_umem_reg_cmd {
void *in;
u32 inlen;
u32 out[MLX5_ST_SZ_DW(create_umem_out)];
};
static struct mlx5_ib_ucontext *
devx_ufile2uctx(const struct uverbs_attr_bundle *attrs)
{
return to_mucontext(ib_uverbs_get_ucontext(attrs));
}
int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user)
{
u32 in[MLX5_ST_SZ_DW(create_uctx_in)] = {};
u32 out[MLX5_ST_SZ_DW(create_uctx_out)] = {};
void *uctx;
int err;
u16 uid;
u32 cap = 0;
/* 0 means not supported */
if (!MLX5_CAP_GEN(dev->mdev, log_max_uctx))
return -EINVAL;
uctx = MLX5_ADDR_OF(create_uctx_in, in, uctx);
if (is_user && capable(CAP_NET_RAW) &&
(MLX5_CAP_GEN(dev->mdev, uctx_cap) & MLX5_UCTX_CAP_RAW_TX))
cap |= MLX5_UCTX_CAP_RAW_TX;
if (is_user && capable(CAP_SYS_RAWIO) &&
(MLX5_CAP_GEN(dev->mdev, uctx_cap) &
MLX5_UCTX_CAP_INTERNAL_DEV_RES))
cap |= MLX5_UCTX_CAP_INTERNAL_DEV_RES;
MLX5_SET(create_uctx_in, in, opcode, MLX5_CMD_OP_CREATE_UCTX);
MLX5_SET(uctx, uctx, cap, cap);
err = mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
if (err)
return err;
uid = MLX5_GET(create_uctx_out, out, uid);
return uid;
}
void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid)
{
u32 in[MLX5_ST_SZ_DW(destroy_uctx_in)] = {};
u32 out[MLX5_ST_SZ_DW(destroy_uctx_out)] = {};
MLX5_SET(destroy_uctx_in, in, opcode, MLX5_CMD_OP_DESTROY_UCTX);
MLX5_SET(destroy_uctx_in, in, uid, uid);
mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
}
static bool is_legacy_unaffiliated_event_num(u16 event_num)
{
switch (event_num) {
case MLX5_EVENT_TYPE_PORT_CHANGE:
return true;
default:
return false;
}
}
static bool is_legacy_obj_event_num(u16 event_num)
{
switch (event_num) {
case MLX5_EVENT_TYPE_PATH_MIG:
case MLX5_EVENT_TYPE_COMM_EST:
case MLX5_EVENT_TYPE_SQ_DRAINED:
case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
case MLX5_EVENT_TYPE_CQ_ERROR:
case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
case MLX5_EVENT_TYPE_DCT_DRAINED:
case MLX5_EVENT_TYPE_COMP:
case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION:
case MLX5_EVENT_TYPE_XRQ_ERROR:
return true;
default:
return false;
}
}
static u16 get_legacy_obj_type(u16 opcode)
{
switch (opcode) {
case MLX5_CMD_OP_CREATE_RQ:
return MLX5_EVENT_QUEUE_TYPE_RQ;
case MLX5_CMD_OP_CREATE_QP:
return MLX5_EVENT_QUEUE_TYPE_QP;
case MLX5_CMD_OP_CREATE_SQ:
return MLX5_EVENT_QUEUE_TYPE_SQ;
case MLX5_CMD_OP_CREATE_DCT:
return MLX5_EVENT_QUEUE_TYPE_DCT;
default:
return 0;
}
}
static u16 get_dec_obj_type(struct devx_obj *obj, u16 event_num)
{
u16 opcode;
opcode = (obj->obj_id >> 32) & 0xffff;
if (is_legacy_obj_event_num(event_num))
return get_legacy_obj_type(opcode);
switch (opcode) {
case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
return (obj->obj_id >> 48);
case MLX5_CMD_OP_CREATE_RQ:
return MLX5_OBJ_TYPE_RQ;
case MLX5_CMD_OP_CREATE_QP:
return MLX5_OBJ_TYPE_QP;
case MLX5_CMD_OP_CREATE_SQ:
return MLX5_OBJ_TYPE_SQ;
case MLX5_CMD_OP_CREATE_DCT:
return MLX5_OBJ_TYPE_DCT;
case MLX5_CMD_OP_CREATE_TIR:
return MLX5_OBJ_TYPE_TIR;
case MLX5_CMD_OP_CREATE_TIS:
return MLX5_OBJ_TYPE_TIS;
case MLX5_CMD_OP_CREATE_PSV:
return MLX5_OBJ_TYPE_PSV;
case MLX5_OBJ_TYPE_MKEY:
return MLX5_OBJ_TYPE_MKEY;
case MLX5_CMD_OP_CREATE_RMP:
return MLX5_OBJ_TYPE_RMP;
case MLX5_CMD_OP_CREATE_XRC_SRQ:
return MLX5_OBJ_TYPE_XRC_SRQ;
case MLX5_CMD_OP_CREATE_XRQ:
return MLX5_OBJ_TYPE_XRQ;
case MLX5_CMD_OP_CREATE_RQT:
return MLX5_OBJ_TYPE_RQT;
case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
return MLX5_OBJ_TYPE_FLOW_COUNTER;
case MLX5_CMD_OP_CREATE_CQ:
return MLX5_OBJ_TYPE_CQ;
default:
return 0;
}
}
static u16 get_event_obj_type(unsigned long event_type, struct mlx5_eqe *eqe)
{
switch (event_type) {
case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
case MLX5_EVENT_TYPE_PATH_MIG:
case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
case MLX5_EVENT_TYPE_COMM_EST:
case MLX5_EVENT_TYPE_SQ_DRAINED:
case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
return eqe->data.qp_srq.type;
case MLX5_EVENT_TYPE_CQ_ERROR:
case MLX5_EVENT_TYPE_XRQ_ERROR:
return 0;
case MLX5_EVENT_TYPE_DCT_DRAINED:
case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION:
return MLX5_EVENT_QUEUE_TYPE_DCT;
default:
return MLX5_GET(affiliated_event_header, &eqe->data, obj_type);
}
}
static u32 get_dec_obj_id(u64 obj_id)
{
return (obj_id & 0xffffffff);
}
/*
* As the obj_id in the firmware is not globally unique the object type
* must be considered upon checking for a valid object id.
* For that the opcode of the creator command is encoded as part of the obj_id.
*/
static u64 get_enc_obj_id(u32 opcode, u32 obj_id)
{
return ((u64)opcode << 32) | obj_id;
}
static u32 devx_get_created_obj_id(const void *in, const void *out, u16 opcode)
{
switch (opcode) {
case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
return MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
case MLX5_CMD_OP_CREATE_UMEM:
return MLX5_GET(create_umem_out, out, umem_id);
case MLX5_CMD_OP_CREATE_MKEY:
return MLX5_GET(create_mkey_out, out, mkey_index);
case MLX5_CMD_OP_CREATE_CQ:
return MLX5_GET(create_cq_out, out, cqn);
case MLX5_CMD_OP_ALLOC_PD:
return MLX5_GET(alloc_pd_out, out, pd);
case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
return MLX5_GET(alloc_transport_domain_out, out,
transport_domain);
case MLX5_CMD_OP_CREATE_RMP:
return MLX5_GET(create_rmp_out, out, rmpn);
case MLX5_CMD_OP_CREATE_SQ:
return MLX5_GET(create_sq_out, out, sqn);
case MLX5_CMD_OP_CREATE_RQ:
return MLX5_GET(create_rq_out, out, rqn);
case MLX5_CMD_OP_CREATE_RQT:
return MLX5_GET(create_rqt_out, out, rqtn);
case MLX5_CMD_OP_CREATE_TIR:
return MLX5_GET(create_tir_out, out, tirn);
case MLX5_CMD_OP_CREATE_TIS:
return MLX5_GET(create_tis_out, out, tisn);
case MLX5_CMD_OP_ALLOC_Q_COUNTER:
return MLX5_GET(alloc_q_counter_out, out, counter_set_id);
case MLX5_CMD_OP_CREATE_FLOW_TABLE:
return MLX5_GET(create_flow_table_out, out, table_id);
case MLX5_CMD_OP_CREATE_FLOW_GROUP:
return MLX5_GET(create_flow_group_out, out, group_id);
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
return MLX5_GET(set_fte_in, in, flow_index);
case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
return MLX5_GET(alloc_flow_counter_out, out, flow_counter_id);
case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT:
return MLX5_GET(alloc_packet_reformat_context_out, out,
packet_reformat_id);
case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
return MLX5_GET(alloc_modify_header_context_out, out,
modify_header_id);
case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
return MLX5_GET(create_scheduling_element_out, out,
scheduling_element_id);
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
return MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port);
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
return MLX5_GET(set_l2_table_entry_in, in, table_index);
case MLX5_CMD_OP_CREATE_QP:
return MLX5_GET(create_qp_out, out, qpn);
case MLX5_CMD_OP_CREATE_SRQ:
return MLX5_GET(create_srq_out, out, srqn);
case MLX5_CMD_OP_CREATE_XRC_SRQ:
return MLX5_GET(create_xrc_srq_out, out, xrc_srqn);
case MLX5_CMD_OP_CREATE_DCT:
return MLX5_GET(create_dct_out, out, dctn);
case MLX5_CMD_OP_CREATE_XRQ:
return MLX5_GET(create_xrq_out, out, xrqn);
case MLX5_CMD_OP_ATTACH_TO_MCG:
return MLX5_GET(attach_to_mcg_in, in, qpn);
case MLX5_CMD_OP_ALLOC_XRCD:
return MLX5_GET(alloc_xrcd_out, out, xrcd);
case MLX5_CMD_OP_CREATE_PSV:
return MLX5_GET(create_psv_out, out, psv0_index);
default:
/* The entry must match to one of the devx_is_obj_create_cmd */
WARN_ON(true);
return 0;
}
}
static u64 devx_get_obj_id(const void *in)
{
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
u64 obj_id;
switch (opcode) {
case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT:
case MLX5_CMD_OP_QUERY_GENERAL_OBJECT:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_GENERAL_OBJECT |
MLX5_GET(general_obj_in_cmd_hdr, in,
obj_type) << 16,
MLX5_GET(general_obj_in_cmd_hdr, in,
obj_id));
break;
case MLX5_CMD_OP_QUERY_MKEY:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_MKEY,
MLX5_GET(query_mkey_in, in,
mkey_index));
break;
case MLX5_CMD_OP_QUERY_CQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ,
MLX5_GET(query_cq_in, in, cqn));
break;
case MLX5_CMD_OP_MODIFY_CQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ,
MLX5_GET(modify_cq_in, in, cqn));
break;
case MLX5_CMD_OP_QUERY_SQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ,
MLX5_GET(query_sq_in, in, sqn));
break;
case MLX5_CMD_OP_MODIFY_SQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ,
MLX5_GET(modify_sq_in, in, sqn));
break;
case MLX5_CMD_OP_QUERY_RQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
MLX5_GET(query_rq_in, in, rqn));
break;
case MLX5_CMD_OP_MODIFY_RQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
MLX5_GET(modify_rq_in, in, rqn));
break;
case MLX5_CMD_OP_QUERY_RMP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP,
MLX5_GET(query_rmp_in, in, rmpn));
break;
case MLX5_CMD_OP_MODIFY_RMP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP,
MLX5_GET(modify_rmp_in, in, rmpn));
break;
case MLX5_CMD_OP_QUERY_RQT:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT,
MLX5_GET(query_rqt_in, in, rqtn));
break;
case MLX5_CMD_OP_MODIFY_RQT:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT,
MLX5_GET(modify_rqt_in, in, rqtn));
break;
case MLX5_CMD_OP_QUERY_TIR:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR,
MLX5_GET(query_tir_in, in, tirn));
break;
case MLX5_CMD_OP_MODIFY_TIR:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR,
MLX5_GET(modify_tir_in, in, tirn));
break;
case MLX5_CMD_OP_QUERY_TIS:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS,
MLX5_GET(query_tis_in, in, tisn));
break;
case MLX5_CMD_OP_MODIFY_TIS:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS,
MLX5_GET(modify_tis_in, in, tisn));
break;
case MLX5_CMD_OP_QUERY_FLOW_TABLE:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE,
MLX5_GET(query_flow_table_in, in,
table_id));
break;
case MLX5_CMD_OP_MODIFY_FLOW_TABLE:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE,
MLX5_GET(modify_flow_table_in, in,
table_id));
break;
case MLX5_CMD_OP_QUERY_FLOW_GROUP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_GROUP,
MLX5_GET(query_flow_group_in, in,
group_id));
break;
case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY,
MLX5_GET(query_fte_in, in,
flow_index));
break;
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY,
MLX5_GET(set_fte_in, in, flow_index));
break;
case MLX5_CMD_OP_QUERY_Q_COUNTER:
obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_Q_COUNTER,
MLX5_GET(query_q_counter_in, in,
counter_set_id));
break;
case MLX5_CMD_OP_QUERY_FLOW_COUNTER:
obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_FLOW_COUNTER,
MLX5_GET(query_flow_counter_in, in,
flow_counter_id));
break;
case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT:
obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT,
MLX5_GET(query_modify_header_context_in,
in, modify_header_id));
break;
case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT,
MLX5_GET(query_scheduling_element_in,
in, scheduling_element_id));
break;
case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT,
MLX5_GET(modify_scheduling_element_in,
in, scheduling_element_id));
break;
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
obj_id = get_enc_obj_id(MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT,
MLX5_GET(add_vxlan_udp_dport_in, in,
vxlan_udp_port));
break;
case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY,
MLX5_GET(query_l2_table_entry_in, in,
table_index));
break;
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY,
MLX5_GET(set_l2_table_entry_in, in,
table_index));
break;
case MLX5_CMD_OP_QUERY_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(query_qp_in, in, qpn));
break;
case MLX5_CMD_OP_RST2INIT_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(rst2init_qp_in, in, qpn));
break;
case MLX5_CMD_OP_INIT2INIT_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(init2init_qp_in, in, qpn));
break;
case MLX5_CMD_OP_INIT2RTR_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(init2rtr_qp_in, in, qpn));
break;
case MLX5_CMD_OP_RTR2RTS_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(rtr2rts_qp_in, in, qpn));
break;
case MLX5_CMD_OP_RTS2RTS_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(rts2rts_qp_in, in, qpn));
break;
case MLX5_CMD_OP_SQERR2RTS_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(sqerr2rts_qp_in, in, qpn));
break;
case MLX5_CMD_OP_2ERR_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(qp_2err_in, in, qpn));
break;
case MLX5_CMD_OP_2RST_QP:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
MLX5_GET(qp_2rst_in, in, qpn));
break;
case MLX5_CMD_OP_QUERY_DCT:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT,
MLX5_GET(query_dct_in, in, dctn));
break;
case MLX5_CMD_OP_QUERY_XRQ:
case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY:
case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ,
MLX5_GET(query_xrq_in, in, xrqn));
break;
case MLX5_CMD_OP_QUERY_XRC_SRQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ,
MLX5_GET(query_xrc_srq_in, in,
xrc_srqn));
break;
case MLX5_CMD_OP_ARM_XRC_SRQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ,
MLX5_GET(arm_xrc_srq_in, in, xrc_srqn));
break;
case MLX5_CMD_OP_QUERY_SRQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SRQ,
MLX5_GET(query_srq_in, in, srqn));
break;
case MLX5_CMD_OP_ARM_RQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
MLX5_GET(arm_rq_in, in, srq_number));
break;
case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT,
MLX5_GET(drain_dct_in, in, dctn));
break;
case MLX5_CMD_OP_ARM_XRQ:
case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY:
case MLX5_CMD_OP_RELEASE_XRQ_ERROR:
case MLX5_CMD_OP_MODIFY_XRQ:
obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ,
MLX5_GET(arm_xrq_in, in, xrqn));
break;
case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT:
obj_id = get_enc_obj_id
(MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT,
MLX5_GET(query_packet_reformat_context_in,
in, packet_reformat_id));
break;
default:
obj_id = 0;
}
return obj_id;
}
static bool devx_is_valid_obj_id(struct uverbs_attr_bundle *attrs,
struct ib_uobject *uobj, const void *in)
{
struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
u64 obj_id = devx_get_obj_id(in);
if (!obj_id)
return false;
switch (uobj_get_object_id(uobj)) {
case UVERBS_OBJECT_CQ:
return get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ,
to_mcq(uobj->object)->mcq.cqn) ==
obj_id;
case UVERBS_OBJECT_SRQ:
{
struct mlx5_core_srq *srq = &(to_msrq(uobj->object)->msrq);
u16 opcode;
switch (srq->common.res) {
case MLX5_RES_XSRQ:
opcode = MLX5_CMD_OP_CREATE_XRC_SRQ;
break;
case MLX5_RES_XRQ:
opcode = MLX5_CMD_OP_CREATE_XRQ;
break;
default:
if (!dev->mdev->issi)
opcode = MLX5_CMD_OP_CREATE_SRQ;
else
opcode = MLX5_CMD_OP_CREATE_RMP;
}
return get_enc_obj_id(opcode,
to_msrq(uobj->object)->msrq.srqn) ==
obj_id;
}
case UVERBS_OBJECT_QP:
{
struct mlx5_ib_qp *qp = to_mqp(uobj->object);
if (qp->type == IB_QPT_RAW_PACKET ||
(qp->flags & IB_QP_CREATE_SOURCE_QPN)) {
struct mlx5_ib_raw_packet_qp *raw_packet_qp =
&qp->raw_packet_qp;
struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
return (get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
rq->base.mqp.qpn) == obj_id ||
get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ,
sq->base.mqp.qpn) == obj_id ||
get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR,
rq->tirn) == obj_id ||
get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS,
sq->tisn) == obj_id);
}
if (qp->type == MLX5_IB_QPT_DCT)
return get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT,
qp->dct.mdct.mqp.qpn) == obj_id;
return get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
qp->ibqp.qp_num) == obj_id;
}
case UVERBS_OBJECT_WQ:
return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
to_mrwq(uobj->object)->core_qp.qpn) ==
obj_id;
case UVERBS_OBJECT_RWQ_IND_TBL:
return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT,
to_mrwq_ind_table(uobj->object)->rqtn) ==
obj_id;
case MLX5_IB_OBJECT_DEVX_OBJ:
return ((struct devx_obj *)uobj->object)->obj_id == obj_id;
default:
return false;
}
}
static void devx_set_umem_valid(const void *in)
{
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
switch (opcode) {
case MLX5_CMD_OP_CREATE_MKEY:
MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1);
break;
case MLX5_CMD_OP_CREATE_CQ:
{
void *cqc;
MLX5_SET(create_cq_in, in, cq_umem_valid, 1);
cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context);
MLX5_SET(cqc, cqc, dbr_umem_valid, 1);
break;
}
case MLX5_CMD_OP_CREATE_QP:
{
void *qpc;
qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
MLX5_SET(qpc, qpc, dbr_umem_valid, 1);
MLX5_SET(create_qp_in, in, wq_umem_valid, 1);
break;
}
case MLX5_CMD_OP_CREATE_RQ:
{
void *rqc, *wq;
rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
wq = MLX5_ADDR_OF(rqc, rqc, wq);
MLX5_SET(wq, wq, dbr_umem_valid, 1);
MLX5_SET(wq, wq, wq_umem_valid, 1);
break;
}
case MLX5_CMD_OP_CREATE_SQ:
{
void *sqc, *wq;
sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
wq = MLX5_ADDR_OF(sqc, sqc, wq);
MLX5_SET(wq, wq, dbr_umem_valid, 1);
MLX5_SET(wq, wq, wq_umem_valid, 1);
break;
}
case MLX5_CMD_OP_MODIFY_CQ:
MLX5_SET(modify_cq_in, in, cq_umem_valid, 1);
break;
case MLX5_CMD_OP_CREATE_RMP:
{
void *rmpc, *wq;
rmpc = MLX5_ADDR_OF(create_rmp_in, in, ctx);
wq = MLX5_ADDR_OF(rmpc, rmpc, wq);
MLX5_SET(wq, wq, dbr_umem_valid, 1);
MLX5_SET(wq, wq, wq_umem_valid, 1);
break;
}
case MLX5_CMD_OP_CREATE_XRQ:
{
void *xrqc, *wq;
xrqc = MLX5_ADDR_OF(create_xrq_in, in, xrq_context);
wq = MLX5_ADDR_OF(xrqc, xrqc, wq);
MLX5_SET(wq, wq, dbr_umem_valid, 1);
MLX5_SET(wq, wq, wq_umem_valid, 1);
break;
}
case MLX5_CMD_OP_CREATE_XRC_SRQ:
{
void *xrc_srqc;
MLX5_SET(create_xrc_srq_in, in, xrc_srq_umem_valid, 1);
xrc_srqc = MLX5_ADDR_OF(create_xrc_srq_in, in,
xrc_srq_context_entry);
MLX5_SET(xrc_srqc, xrc_srqc, dbr_umem_valid, 1);
break;
}
default:
return;
}
}
static bool devx_is_obj_create_cmd(const void *in, u16 *opcode)
{
*opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
switch (*opcode) {
case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
case MLX5_CMD_OP_CREATE_MKEY:
case MLX5_CMD_OP_CREATE_CQ:
case MLX5_CMD_OP_ALLOC_PD:
case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
case MLX5_CMD_OP_CREATE_RMP:
case MLX5_CMD_OP_CREATE_SQ:
case MLX5_CMD_OP_CREATE_RQ:
case MLX5_CMD_OP_CREATE_RQT:
case MLX5_CMD_OP_CREATE_TIR:
case MLX5_CMD_OP_CREATE_TIS:
case MLX5_CMD_OP_ALLOC_Q_COUNTER:
case MLX5_CMD_OP_CREATE_FLOW_TABLE:
case MLX5_CMD_OP_CREATE_FLOW_GROUP:
case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT:
case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
case MLX5_CMD_OP_CREATE_QP:
case MLX5_CMD_OP_CREATE_SRQ:
case MLX5_CMD_OP_CREATE_XRC_SRQ:
case MLX5_CMD_OP_CREATE_DCT:
case MLX5_CMD_OP_CREATE_XRQ:
case MLX5_CMD_OP_ATTACH_TO_MCG:
case MLX5_CMD_OP_ALLOC_XRCD:
return true;
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
{
u16 op_mod = MLX5_GET(set_fte_in, in, op_mod);
if (op_mod == 0)
return true;
return false;
}
case MLX5_CMD_OP_CREATE_PSV:
{
u8 num_psv = MLX5_GET(create_psv_in, in, num_psv);
if (num_psv == 1)
return true;
return false;
}
default:
return false;
}
}
static bool devx_is_obj_modify_cmd(const void *in)
{
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
switch (opcode) {
case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT:
case MLX5_CMD_OP_MODIFY_CQ:
case MLX5_CMD_OP_MODIFY_RMP:
case MLX5_CMD_OP_MODIFY_SQ:
case MLX5_CMD_OP_MODIFY_RQ:
case MLX5_CMD_OP_MODIFY_RQT:
case MLX5_CMD_OP_MODIFY_TIR:
case MLX5_CMD_OP_MODIFY_TIS:
case MLX5_CMD_OP_MODIFY_FLOW_TABLE:
case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT:
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
case MLX5_CMD_OP_RST2INIT_QP:
case MLX5_CMD_OP_INIT2RTR_QP:
case MLX5_CMD_OP_INIT2INIT_QP:
case MLX5_CMD_OP_RTR2RTS_QP:
case MLX5_CMD_OP_RTS2RTS_QP:
case MLX5_CMD_OP_SQERR2RTS_QP:
case MLX5_CMD_OP_2ERR_QP:
case MLX5_CMD_OP_2RST_QP:
case MLX5_CMD_OP_ARM_XRC_SRQ:
case MLX5_CMD_OP_ARM_RQ:
case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
case MLX5_CMD_OP_ARM_XRQ:
case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY:
case MLX5_CMD_OP_RELEASE_XRQ_ERROR:
case MLX5_CMD_OP_MODIFY_XRQ:
return true;
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
{
u16 op_mod = MLX5_GET(set_fte_in, in, op_mod);
if (op_mod == 1)
return true;
return false;
}
default:
return false;
}
}
static bool devx_is_obj_query_cmd(const void *in)
{
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
switch (opcode) {
case MLX5_CMD_OP_QUERY_GENERAL_OBJECT:
case MLX5_CMD_OP_QUERY_MKEY:
case MLX5_CMD_OP_QUERY_CQ:
case MLX5_CMD_OP_QUERY_RMP:
case MLX5_CMD_OP_QUERY_SQ:
case MLX5_CMD_OP_QUERY_RQ:
case MLX5_CMD_OP_QUERY_RQT:
case MLX5_CMD_OP_QUERY_TIR:
case MLX5_CMD_OP_QUERY_TIS:
case MLX5_CMD_OP_QUERY_Q_COUNTER:
case MLX5_CMD_OP_QUERY_FLOW_TABLE:
case MLX5_CMD_OP_QUERY_FLOW_GROUP:
case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
case MLX5_CMD_OP_QUERY_FLOW_COUNTER:
case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT:
case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT:
case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
case MLX5_CMD_OP_QUERY_QP:
case MLX5_CMD_OP_QUERY_SRQ:
case MLX5_CMD_OP_QUERY_XRC_SRQ:
case MLX5_CMD_OP_QUERY_DCT:
case MLX5_CMD_OP_QUERY_XRQ:
case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY:
case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS:
case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT:
return true;
default:
return false;
}
}
static bool devx_is_whitelist_cmd(void *in)
{
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
switch (opcode) {
case MLX5_CMD_OP_QUERY_HCA_CAP:
case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT:
case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT:
case MLX5_CMD_OP_QUERY_ESW_FUNCTIONS:
return true;
default:
return false;
}
}
static int devx_get_uid(struct mlx5_ib_ucontext *c, void *cmd_in)
{
if (devx_is_whitelist_cmd(cmd_in)) {
struct mlx5_ib_dev *dev;
if (c->devx_uid)
return c->devx_uid;
dev = to_mdev(c->ibucontext.device);
if (dev->devx_whitelist_uid)
return dev->devx_whitelist_uid;
return -EOPNOTSUPP;
}
if (!c->devx_uid)
return -EINVAL;
return c->devx_uid;
}
static bool devx_is_general_cmd(void *in, struct mlx5_ib_dev *dev)
{
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
/* Pass all cmds for vhca_tunnel as general, tracking is done in FW */
if ((MLX5_CAP_GEN_64(dev->mdev, vhca_tunnel_commands) &&
MLX5_GET(general_obj_in_cmd_hdr, in, vhca_tunnel_id)) ||
(opcode >= MLX5_CMD_OP_GENERAL_START &&
opcode < MLX5_CMD_OP_GENERAL_END))
return true;
switch (opcode) {
case MLX5_CMD_OP_QUERY_HCA_CAP:
case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT:
case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT:
case MLX5_CMD_OP_QUERY_VPORT_STATE:
case MLX5_CMD_OP_QUERY_ADAPTER:
case MLX5_CMD_OP_QUERY_ISSI:
case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT:
case MLX5_CMD_OP_QUERY_ROCE_ADDRESS:
case MLX5_CMD_OP_QUERY_VNIC_ENV:
case MLX5_CMD_OP_QUERY_VPORT_COUNTER:
case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG:
case MLX5_CMD_OP_NOP:
case MLX5_CMD_OP_QUERY_CONG_STATUS:
case MLX5_CMD_OP_QUERY_CONG_PARAMS:
case MLX5_CMD_OP_QUERY_CONG_STATISTICS:
case MLX5_CMD_OP_QUERY_LAG:
case MLX5_CMD_OP_QUERY_ESW_FUNCTIONS:
return true;
default:
return false;
}
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_EQN)(
struct uverbs_attr_bundle *attrs)
{
struct mlx5_ib_ucontext *c;
struct mlx5_ib_dev *dev;
int user_vector;
int dev_eqn;
int err;
if (uverbs_copy_from(&user_vector, attrs,
MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC))
return -EFAULT;
c = devx_ufile2uctx(attrs);
if (IS_ERR(c))
return PTR_ERR(c);
dev = to_mdev(c->ibucontext.device);
err = mlx5_vector2eqn(dev->mdev, user_vector, &dev_eqn);
if (err < 0)
return err;
if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
&dev_eqn, sizeof(dev_eqn)))
return -EFAULT;
return 0;
}
/*
*Security note:
* The hardware protection mechanism works like this: Each device object that
* is subject to UAR doorbells (QP/SQ/CQ) gets a UAR ID (called uar_page in
* the device specification manual) upon its creation. Then upon doorbell,
* hardware fetches the object context for which the doorbell was rang, and
* validates that the UAR through which the DB was rang matches the UAR ID
* of the object.
* If no match the doorbell is silently ignored by the hardware. Of course,
* the user cannot ring a doorbell on a UAR that was not mapped to it.
* Now in devx, as the devx kernel does not manipulate the QP/SQ/CQ command
* mailboxes (except tagging them with UID), we expose to the user its UAR
* ID, so it can embed it in these objects in the expected specification
* format. So the only thing the user can do is hurt itself by creating a
* QP/SQ/CQ with a UAR ID other than his, and then in this case other users
* may ring a doorbell on its objects.
* The consequence of that will be that another user can schedule a QP/SQ
* of the buggy user for execution (just insert it to the hardware schedule
* queue or arm its CQ for event generation), no further harm is expected.
*/
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_UAR)(
struct uverbs_attr_bundle *attrs)
{
struct mlx5_ib_ucontext *c;
struct mlx5_ib_dev *dev;
u32 user_idx;
s32 dev_idx;
c = devx_ufile2uctx(attrs);
if (IS_ERR(c))
return PTR_ERR(c);
dev = to_mdev(c->ibucontext.device);
if (uverbs_copy_from(&user_idx, attrs,
MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX))
return -EFAULT;
dev_idx = bfregn_to_uar_index(dev, &c->bfregi, user_idx, true);
if (dev_idx < 0)
return dev_idx;
if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
&dev_idx, sizeof(dev_idx)))
return -EFAULT;
return 0;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OTHER)(
struct uverbs_attr_bundle *attrs)
{
struct mlx5_ib_ucontext *c;
struct mlx5_ib_dev *dev;
void *cmd_in = uverbs_attr_get_alloced_ptr(
attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN);
int cmd_out_len = uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT);
void *cmd_out;
int err, err2;
int uid;
c = devx_ufile2uctx(attrs);
if (IS_ERR(c))
return PTR_ERR(c);
dev = to_mdev(c->ibucontext.device);
uid = devx_get_uid(c, cmd_in);
if (uid < 0)
return uid;
/* Only white list of some general HCA commands are allowed for this method. */
if (!devx_is_general_cmd(cmd_in, dev))
return -EINVAL;
cmd_out = uverbs_zalloc(attrs, cmd_out_len);
if (IS_ERR(cmd_out))
return PTR_ERR(cmd_out);
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
err = mlx5_cmd_do(dev->mdev, cmd_in,
uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN),
cmd_out, cmd_out_len);
if (err && err != -EREMOTEIO)
return err;
err2 = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, cmd_out,
cmd_out_len);
return err2 ?: err;
}
static void devx_obj_build_destroy_cmd(void *in, void *out, void *din,
u32 *dinlen,
u32 *obj_id)
{
u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
u16 uid = MLX5_GET(general_obj_in_cmd_hdr, in, uid);
*obj_id = devx_get_created_obj_id(in, out, opcode);
*dinlen = MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr);
MLX5_SET(general_obj_in_cmd_hdr, din, uid, uid);
switch (opcode) {
case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
MLX5_SET(general_obj_in_cmd_hdr, din, obj_id, *obj_id);
MLX5_SET(general_obj_in_cmd_hdr, din, obj_type,
MLX5_GET(general_obj_in_cmd_hdr, in, obj_type));
break;
case MLX5_CMD_OP_CREATE_UMEM:
MLX5_SET(destroy_umem_in, din, opcode,
MLX5_CMD_OP_DESTROY_UMEM);
MLX5_SET(destroy_umem_in, din, umem_id, *obj_id);
break;
case MLX5_CMD_OP_CREATE_MKEY:
MLX5_SET(destroy_mkey_in, din, opcode,
MLX5_CMD_OP_DESTROY_MKEY);
MLX5_SET(destroy_mkey_in, din, mkey_index, *obj_id);
break;
case MLX5_CMD_OP_CREATE_CQ:
MLX5_SET(destroy_cq_in, din, opcode, MLX5_CMD_OP_DESTROY_CQ);
MLX5_SET(destroy_cq_in, din, cqn, *obj_id);
break;
case MLX5_CMD_OP_ALLOC_PD:
MLX5_SET(dealloc_pd_in, din, opcode, MLX5_CMD_OP_DEALLOC_PD);
MLX5_SET(dealloc_pd_in, din, pd, *obj_id);
break;
case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
MLX5_SET(dealloc_transport_domain_in, din, opcode,
MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN);
MLX5_SET(dealloc_transport_domain_in, din, transport_domain,
*obj_id);
break;
case MLX5_CMD_OP_CREATE_RMP:
MLX5_SET(destroy_rmp_in, din, opcode, MLX5_CMD_OP_DESTROY_RMP);
MLX5_SET(destroy_rmp_in, din, rmpn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_SQ:
MLX5_SET(destroy_sq_in, din, opcode, MLX5_CMD_OP_DESTROY_SQ);
MLX5_SET(destroy_sq_in, din, sqn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_RQ:
MLX5_SET(destroy_rq_in, din, opcode, MLX5_CMD_OP_DESTROY_RQ);
MLX5_SET(destroy_rq_in, din, rqn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_RQT:
MLX5_SET(destroy_rqt_in, din, opcode, MLX5_CMD_OP_DESTROY_RQT);
MLX5_SET(destroy_rqt_in, din, rqtn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_TIR:
MLX5_SET(destroy_tir_in, din, opcode, MLX5_CMD_OP_DESTROY_TIR);
MLX5_SET(destroy_tir_in, din, tirn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_TIS:
MLX5_SET(destroy_tis_in, din, opcode, MLX5_CMD_OP_DESTROY_TIS);
MLX5_SET(destroy_tis_in, din, tisn, *obj_id);
break;
case MLX5_CMD_OP_ALLOC_Q_COUNTER:
MLX5_SET(dealloc_q_counter_in, din, opcode,
MLX5_CMD_OP_DEALLOC_Q_COUNTER);
MLX5_SET(dealloc_q_counter_in, din, counter_set_id, *obj_id);
break;
case MLX5_CMD_OP_CREATE_FLOW_TABLE:
*dinlen = MLX5_ST_SZ_BYTES(destroy_flow_table_in);
MLX5_SET(destroy_flow_table_in, din, other_vport,
MLX5_GET(create_flow_table_in, in, other_vport));
MLX5_SET(destroy_flow_table_in, din, vport_number,
MLX5_GET(create_flow_table_in, in, vport_number));
MLX5_SET(destroy_flow_table_in, din, table_type,
MLX5_GET(create_flow_table_in, in, table_type));
MLX5_SET(destroy_flow_table_in, din, table_id, *obj_id);
MLX5_SET(destroy_flow_table_in, din, opcode,
MLX5_CMD_OP_DESTROY_FLOW_TABLE);
break;
case MLX5_CMD_OP_CREATE_FLOW_GROUP:
*dinlen = MLX5_ST_SZ_BYTES(destroy_flow_group_in);
MLX5_SET(destroy_flow_group_in, din, other_vport,
MLX5_GET(create_flow_group_in, in, other_vport));
MLX5_SET(destroy_flow_group_in, din, vport_number,
MLX5_GET(create_flow_group_in, in, vport_number));
MLX5_SET(destroy_flow_group_in, din, table_type,
MLX5_GET(create_flow_group_in, in, table_type));
MLX5_SET(destroy_flow_group_in, din, table_id,
MLX5_GET(create_flow_group_in, in, table_id));
MLX5_SET(destroy_flow_group_in, din, group_id, *obj_id);
MLX5_SET(destroy_flow_group_in, din, opcode,
MLX5_CMD_OP_DESTROY_FLOW_GROUP);
break;
case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
*dinlen = MLX5_ST_SZ_BYTES(delete_fte_in);
MLX5_SET(delete_fte_in, din, other_vport,
MLX5_GET(set_fte_in, in, other_vport));
MLX5_SET(delete_fte_in, din, vport_number,
MLX5_GET(set_fte_in, in, vport_number));
MLX5_SET(delete_fte_in, din, table_type,
MLX5_GET(set_fte_in, in, table_type));
MLX5_SET(delete_fte_in, din, table_id,
MLX5_GET(set_fte_in, in, table_id));
MLX5_SET(delete_fte_in, din, flow_index, *obj_id);
MLX5_SET(delete_fte_in, din, opcode,
MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY);
break;
case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
MLX5_SET(dealloc_flow_counter_in, din, opcode,
MLX5_CMD_OP_DEALLOC_FLOW_COUNTER);
MLX5_SET(dealloc_flow_counter_in, din, flow_counter_id,
*obj_id);
break;
case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT:
MLX5_SET(dealloc_packet_reformat_context_in, din, opcode,
MLX5_CMD_OP_DEALLOC_PACKET_REFORMAT_CONTEXT);
MLX5_SET(dealloc_packet_reformat_context_in, din,
packet_reformat_id, *obj_id);
break;
case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
MLX5_SET(dealloc_modify_header_context_in, din, opcode,
MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT);
MLX5_SET(dealloc_modify_header_context_in, din,
modify_header_id, *obj_id);
break;
case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
*dinlen = MLX5_ST_SZ_BYTES(destroy_scheduling_element_in);
MLX5_SET(destroy_scheduling_element_in, din,
scheduling_hierarchy,
MLX5_GET(create_scheduling_element_in, in,
scheduling_hierarchy));
MLX5_SET(destroy_scheduling_element_in, din,
scheduling_element_id, *obj_id);
MLX5_SET(destroy_scheduling_element_in, din, opcode,
MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT);
break;
case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
*dinlen = MLX5_ST_SZ_BYTES(delete_vxlan_udp_dport_in);
MLX5_SET(delete_vxlan_udp_dport_in, din, vxlan_udp_port, *obj_id);
MLX5_SET(delete_vxlan_udp_dport_in, din, opcode,
MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT);
break;
case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
*dinlen = MLX5_ST_SZ_BYTES(delete_l2_table_entry_in);
MLX5_SET(delete_l2_table_entry_in, din, table_index, *obj_id);
MLX5_SET(delete_l2_table_entry_in, din, opcode,
MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY);
break;
case MLX5_CMD_OP_CREATE_QP:
MLX5_SET(destroy_qp_in, din, opcode, MLX5_CMD_OP_DESTROY_QP);
MLX5_SET(destroy_qp_in, din, qpn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_SRQ:
MLX5_SET(destroy_srq_in, din, opcode, MLX5_CMD_OP_DESTROY_SRQ);
MLX5_SET(destroy_srq_in, din, srqn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_XRC_SRQ:
MLX5_SET(destroy_xrc_srq_in, din, opcode,
MLX5_CMD_OP_DESTROY_XRC_SRQ);
MLX5_SET(destroy_xrc_srq_in, din, xrc_srqn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_DCT:
MLX5_SET(destroy_dct_in, din, opcode, MLX5_CMD_OP_DESTROY_DCT);
MLX5_SET(destroy_dct_in, din, dctn, *obj_id);
break;
case MLX5_CMD_OP_CREATE_XRQ:
MLX5_SET(destroy_xrq_in, din, opcode, MLX5_CMD_OP_DESTROY_XRQ);
MLX5_SET(destroy_xrq_in, din, xrqn, *obj_id);
break;
case MLX5_CMD_OP_ATTACH_TO_MCG:
*dinlen = MLX5_ST_SZ_BYTES(detach_from_mcg_in);
MLX5_SET(detach_from_mcg_in, din, qpn,
MLX5_GET(attach_to_mcg_in, in, qpn));
memcpy(MLX5_ADDR_OF(detach_from_mcg_in, din, multicast_gid),
MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid),
MLX5_FLD_SZ_BYTES(attach_to_mcg_in, multicast_gid));
MLX5_SET(detach_from_mcg_in, din, opcode,
MLX5_CMD_OP_DETACH_FROM_MCG);
MLX5_SET(detach_from_mcg_in, din, qpn, *obj_id);
break;
case MLX5_CMD_OP_ALLOC_XRCD:
MLX5_SET(dealloc_xrcd_in, din, opcode,
MLX5_CMD_OP_DEALLOC_XRCD);
MLX5_SET(dealloc_xrcd_in, din, xrcd, *obj_id);
break;
case MLX5_CMD_OP_CREATE_PSV:
MLX5_SET(destroy_psv_in, din, opcode,
MLX5_CMD_OP_DESTROY_PSV);
MLX5_SET(destroy_psv_in, din, psvn, *obj_id);
break;
default:
/* The entry must match to one of the devx_is_obj_create_cmd */
WARN_ON(true);
break;
}
}
static int devx_handle_mkey_indirect(struct devx_obj *obj,
struct mlx5_ib_dev *dev,
void *in, void *out)
{
struct mlx5_ib_mkey *mkey = &obj->mkey;
void *mkc;
u8 key;
mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
key = MLX5_GET(mkc, mkc, mkey_7_0);
mkey->key = mlx5_idx_to_mkey(
MLX5_GET(create_mkey_out, out, mkey_index)) | key;
mkey->type = MLX5_MKEY_INDIRECT_DEVX;
mkey->ndescs = MLX5_GET(mkc, mkc, translations_octword_size);
init_waitqueue_head(&mkey->wait);
return mlx5r_store_odp_mkey(dev, mkey);
}
static int devx_handle_mkey_create(struct mlx5_ib_dev *dev,
struct devx_obj *obj,
void *in, int in_len)
{
int min_len = MLX5_BYTE_OFF(create_mkey_in, memory_key_mkey_entry) +
MLX5_FLD_SZ_BYTES(create_mkey_in,
memory_key_mkey_entry);
void *mkc;
u8 access_mode;
if (in_len < min_len)
return -EINVAL;
mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
access_mode = MLX5_GET(mkc, mkc, access_mode_1_0);
access_mode |= MLX5_GET(mkc, mkc, access_mode_4_2) << 2;
if (access_mode == MLX5_MKC_ACCESS_MODE_KLMS ||
access_mode == MLX5_MKC_ACCESS_MODE_KSM) {
if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING))
obj->flags |= DEVX_OBJ_FLAGS_INDIRECT_MKEY;
return 0;
}
MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1);
return 0;
}
static void devx_cleanup_subscription(struct mlx5_ib_dev *dev,
struct devx_event_subscription *sub)
{
struct devx_event *event;
struct devx_obj_event *xa_val_level2;
if (sub->is_cleaned)
return;
sub->is_cleaned = 1;
list_del_rcu(&sub->xa_list);
if (list_empty(&sub->obj_list))
return;
list_del_rcu(&sub->obj_list);
/* check whether key level 1 for this obj_sub_list is empty */
event = xa_load(&dev->devx_event_table.event_xa,
sub->xa_key_level1);
WARN_ON(!event);
xa_val_level2 = xa_load(&event->object_ids, sub->xa_key_level2);
if (list_empty(&xa_val_level2->obj_sub_list)) {
xa_erase(&event->object_ids,
sub->xa_key_level2);
kfree_rcu(xa_val_level2, rcu);
}
}
static int devx_obj_cleanup(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
struct mlx5_devx_event_table *devx_event_table;
struct devx_obj *obj = uobject->object;
struct devx_event_subscription *sub_entry, *tmp;
struct mlx5_ib_dev *dev;
int ret;
dev = mlx5_udata_to_mdev(&attrs->driver_udata);
if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY &&
xa_erase(&obj->ib_dev->odp_mkeys,
mlx5_base_mkey(obj->mkey.key)))
/*
* The pagefault_single_data_segment() does commands against
* the mmkey, we must wait for that to stop before freeing the
* mkey, as another allocation could get the same mkey #.
*/
mlx5r_deref_wait_odp_mkey(&obj->mkey);
if (obj->flags & DEVX_OBJ_FLAGS_DCT)
ret = mlx5_core_destroy_dct(obj->ib_dev, &obj->core_dct);
else if (obj->flags & DEVX_OBJ_FLAGS_CQ)
ret = mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq);
else
ret = mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox,
obj->dinlen, out, sizeof(out));
if (ret)
return ret;
devx_event_table = &dev->devx_event_table;
mutex_lock(&devx_event_table->event_xa_lock);
list_for_each_entry_safe(sub_entry, tmp, &obj->event_sub, obj_list)
devx_cleanup_subscription(dev, sub_entry);
mutex_unlock(&devx_event_table->event_xa_lock);
kfree(obj);
return ret;
}
static void devx_cq_comp(struct mlx5_core_cq *mcq, struct mlx5_eqe *eqe)
{
struct devx_obj *obj = container_of(mcq, struct devx_obj, core_cq);
struct mlx5_devx_event_table *table;
struct devx_event *event;
struct devx_obj_event *obj_event;
u32 obj_id = mcq->cqn;
table = &obj->ib_dev->devx_event_table;
rcu_read_lock();
event = xa_load(&table->event_xa, MLX5_EVENT_TYPE_COMP);
if (!event)
goto out;
obj_event = xa_load(&event->object_ids, obj_id);
if (!obj_event)
goto out;
dispatch_event_fd(&obj_event->obj_sub_list, eqe);
out:
rcu_read_unlock();
}
static bool is_apu_cq(struct mlx5_ib_dev *dev, const void *in)
{
if (!MLX5_CAP_GEN(dev->mdev, apu) ||
!MLX5_GET(cqc, MLX5_ADDR_OF(create_cq_in, in, cq_context), apu_cq))
return false;
return true;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)(
struct uverbs_attr_bundle *attrs)
{
void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN);
int cmd_out_len = uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT);
int cmd_in_len = uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN);
void *cmd_out;
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE);
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
struct devx_obj *obj;
u16 obj_type = 0;
int err, err2 = 0;
int uid;
u32 obj_id;
u16 opcode;
if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id))
return -EINVAL;
uid = devx_get_uid(c, cmd_in);
if (uid < 0)
return uid;
if (!devx_is_obj_create_cmd(cmd_in, &opcode))
return -EINVAL;
cmd_out = uverbs_zalloc(attrs, cmd_out_len);
if (IS_ERR(cmd_out))
return PTR_ERR(cmd_out);
obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL);
if (!obj)
return -ENOMEM;
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
if (opcode == MLX5_CMD_OP_CREATE_MKEY) {
err = devx_handle_mkey_create(dev, obj, cmd_in, cmd_in_len);
if (err)
goto obj_free;
} else {
devx_set_umem_valid(cmd_in);
}
if (opcode == MLX5_CMD_OP_CREATE_DCT) {
obj->flags |= DEVX_OBJ_FLAGS_DCT;
err = mlx5_core_create_dct(dev, &obj->core_dct, cmd_in,
cmd_in_len, cmd_out, cmd_out_len);
} else if (opcode == MLX5_CMD_OP_CREATE_CQ &&
!is_apu_cq(dev, cmd_in)) {
obj->flags |= DEVX_OBJ_FLAGS_CQ;
obj->core_cq.comp = devx_cq_comp;
err = mlx5_create_cq(dev->mdev, &obj->core_cq,
cmd_in, cmd_in_len, cmd_out,
cmd_out_len);
} else {
err = mlx5_cmd_do(dev->mdev, cmd_in, cmd_in_len,
cmd_out, cmd_out_len);
}
if (err == -EREMOTEIO)
err2 = uverbs_copy_to(attrs,
MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT,
cmd_out, cmd_out_len);
if (err)
goto obj_free;
if (opcode == MLX5_CMD_OP_ALLOC_FLOW_COUNTER) {
u8 bulk = MLX5_GET(alloc_flow_counter_in,
cmd_in,
flow_counter_bulk);
obj->flow_counter_bulk_size = 128UL * bulk;
}
uobj->object = obj;
INIT_LIST_HEAD(&obj->event_sub);
obj->ib_dev = dev;
devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen,
&obj_id);
WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32));
err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len);
if (err)
goto obj_destroy;
if (opcode == MLX5_CMD_OP_CREATE_GENERAL_OBJECT)
obj_type = MLX5_GET(general_obj_in_cmd_hdr, cmd_in, obj_type);
obj->obj_id = get_enc_obj_id(opcode | obj_type << 16, obj_id);
if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY) {
err = devx_handle_mkey_indirect(obj, dev, cmd_in, cmd_out);
if (err)
goto obj_destroy;
}
return 0;
obj_destroy:
if (obj->flags & DEVX_OBJ_FLAGS_DCT)
mlx5_core_destroy_dct(obj->ib_dev, &obj->core_dct);
else if (obj->flags & DEVX_OBJ_FLAGS_CQ)
mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq);
else
mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox, obj->dinlen, out,
sizeof(out));
obj_free:
kfree(obj);
return err2 ?: err;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)(
struct uverbs_attr_bundle *attrs)
{
void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN);
int cmd_out_len = uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT);
struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE);
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device);
void *cmd_out;
int err, err2;
int uid;
if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id))
return -EINVAL;
uid = devx_get_uid(c, cmd_in);
if (uid < 0)
return uid;
if (!devx_is_obj_modify_cmd(cmd_in))
return -EINVAL;
if (!devx_is_valid_obj_id(attrs, uobj, cmd_in))
return -EINVAL;
cmd_out = uverbs_zalloc(attrs, cmd_out_len);
if (IS_ERR(cmd_out))
return PTR_ERR(cmd_out);
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
devx_set_umem_valid(cmd_in);
err = mlx5_cmd_do(mdev->mdev, cmd_in,
uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN),
cmd_out, cmd_out_len);
if (err && err != -EREMOTEIO)
return err;
err2 = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
cmd_out, cmd_out_len);
return err2 ?: err;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)(
struct uverbs_attr_bundle *attrs)
{
void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN);
int cmd_out_len = uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT);
struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE);
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
void *cmd_out;
int err, err2;
int uid;
struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device);
if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id))
return -EINVAL;
uid = devx_get_uid(c, cmd_in);
if (uid < 0)
return uid;
if (!devx_is_obj_query_cmd(cmd_in))
return -EINVAL;
if (!devx_is_valid_obj_id(attrs, uobj, cmd_in))
return -EINVAL;
cmd_out = uverbs_zalloc(attrs, cmd_out_len);
if (IS_ERR(cmd_out))
return PTR_ERR(cmd_out);
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
err = mlx5_cmd_do(mdev->mdev, cmd_in,
uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN),
cmd_out, cmd_out_len);
if (err && err != -EREMOTEIO)
return err;
err2 = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
cmd_out, cmd_out_len);
return err2 ?: err;
}
struct devx_async_event_queue {
spinlock_t lock;
wait_queue_head_t poll_wait;
struct list_head event_list;
atomic_t bytes_in_use;
u8 is_destroyed:1;
};
struct devx_async_cmd_event_file {
struct ib_uobject uobj;
struct devx_async_event_queue ev_queue;
struct mlx5_async_ctx async_ctx;
};
static void devx_init_event_queue(struct devx_async_event_queue *ev_queue)
{
spin_lock_init(&ev_queue->lock);
INIT_LIST_HEAD(&ev_queue->event_list);
init_waitqueue_head(&ev_queue->poll_wait);
atomic_set(&ev_queue->bytes_in_use, 0);
ev_queue->is_destroyed = 0;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)(
struct uverbs_attr_bundle *attrs)
{
struct devx_async_cmd_event_file *ev_file;
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs, MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE);
struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
ev_file = container_of(uobj, struct devx_async_cmd_event_file,
uobj);
devx_init_event_queue(&ev_file->ev_queue);
mlx5_cmd_init_async_ctx(mdev->mdev, &ev_file->async_ctx);
return 0;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)(
struct uverbs_attr_bundle *attrs)
{
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs, MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE);
struct devx_async_event_file *ev_file;
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
u32 flags;
int err;
err = uverbs_get_flags32(&flags, attrs,
MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS,
MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA);
if (err)
return err;
ev_file = container_of(uobj, struct devx_async_event_file,
uobj);
spin_lock_init(&ev_file->lock);
INIT_LIST_HEAD(&ev_file->event_list);
init_waitqueue_head(&ev_file->poll_wait);
if (flags & MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA)
ev_file->omit_data = 1;
INIT_LIST_HEAD(&ev_file->subscribed_events_list);
ev_file->dev = dev;
get_device(&dev->ib_dev.dev);
return 0;
}
static void devx_query_callback(int status, struct mlx5_async_work *context)
{
struct devx_async_data *async_data =
container_of(context, struct devx_async_data, cb_work);
struct devx_async_cmd_event_file *ev_file = async_data->ev_file;
struct devx_async_event_queue *ev_queue = &ev_file->ev_queue;
unsigned long flags;
/*
* Note that if the struct devx_async_cmd_event_file uobj begins to be
* destroyed it will block at mlx5_cmd_cleanup_async_ctx() until this
* routine returns, ensuring that it always remains valid here.
*/
spin_lock_irqsave(&ev_queue->lock, flags);
list_add_tail(&async_data->list, &ev_queue->event_list);
spin_unlock_irqrestore(&ev_queue->lock, flags);
wake_up_interruptible(&ev_queue->poll_wait);
}
#define MAX_ASYNC_BYTES_IN_USE (1024 * 1024) /* 1MB */
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)(
struct uverbs_attr_bundle *attrs)
{
void *cmd_in = uverbs_attr_get_alloced_ptr(attrs,
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN);
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs,
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_HANDLE);
u16 cmd_out_len;
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
struct ib_uobject *fd_uobj;
int err;
int uid;
struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device);
struct devx_async_cmd_event_file *ev_file;
struct devx_async_data *async_data;
if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id))
return -EINVAL;
uid = devx_get_uid(c, cmd_in);
if (uid < 0)
return uid;
if (!devx_is_obj_query_cmd(cmd_in))
return -EINVAL;
err = uverbs_get_const(&cmd_out_len, attrs,
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN);
if (err)
return err;
if (!devx_is_valid_obj_id(attrs, uobj, cmd_in))
return -EINVAL;
fd_uobj = uverbs_attr_get_uobject(attrs,
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD);
if (IS_ERR(fd_uobj))
return PTR_ERR(fd_uobj);
ev_file = container_of(fd_uobj, struct devx_async_cmd_event_file,
uobj);
if (atomic_add_return(cmd_out_len, &ev_file->ev_queue.bytes_in_use) >
MAX_ASYNC_BYTES_IN_USE) {
atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use);
return -EAGAIN;
}
async_data = kvzalloc(struct_size(async_data, hdr.out_data,
cmd_out_len), GFP_KERNEL);
if (!async_data) {
err = -ENOMEM;
goto sub_bytes;
}
err = uverbs_copy_from(&async_data->hdr.wr_id, attrs,
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID);
if (err)
goto free_async;
async_data->cmd_out_len = cmd_out_len;
async_data->mdev = mdev;
async_data->ev_file = ev_file;
MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
err = mlx5_cmd_exec_cb(&ev_file->async_ctx, cmd_in,
uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN),
async_data->hdr.out_data,
async_data->cmd_out_len,
devx_query_callback, &async_data->cb_work);
if (err)
goto free_async;
return 0;
free_async:
kvfree(async_data);
sub_bytes:
atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use);
return err;
}
static void
subscribe_event_xa_dealloc(struct mlx5_devx_event_table *devx_event_table,
u32 key_level1,
bool is_level2,
u32 key_level2)
{
struct devx_event *event;
struct devx_obj_event *xa_val_level2;
/* Level 1 is valid for future use, no need to free */
if (!is_level2)
return;
event = xa_load(&devx_event_table->event_xa, key_level1);
WARN_ON(!event);
xa_val_level2 = xa_load(&event->object_ids,
key_level2);
if (list_empty(&xa_val_level2->obj_sub_list)) {
xa_erase(&event->object_ids,
key_level2);
kfree_rcu(xa_val_level2, rcu);
}
}
static int
subscribe_event_xa_alloc(struct mlx5_devx_event_table *devx_event_table,
u32 key_level1,
bool is_level2,
u32 key_level2)
{
struct devx_obj_event *obj_event;
struct devx_event *event;
int err;
event = xa_load(&devx_event_table->event_xa, key_level1);
if (!event) {
event = kzalloc(sizeof(*event), GFP_KERNEL);
if (!event)
return -ENOMEM;
INIT_LIST_HEAD(&event->unaffiliated_list);
xa_init(&event->object_ids);
err = xa_insert(&devx_event_table->event_xa,
key_level1,
event,
GFP_KERNEL);
if (err) {
kfree(event);
return err;
}
}
if (!is_level2)
return 0;
obj_event = xa_load(&event->object_ids, key_level2);
if (!obj_event) {
obj_event = kzalloc(sizeof(*obj_event), GFP_KERNEL);
if (!obj_event)
/* Level1 is valid for future use, no need to free */
return -ENOMEM;
err = xa_insert(&event->object_ids,
key_level2,
obj_event,
GFP_KERNEL);
if (err) {
kfree(obj_event);
return err;
}
INIT_LIST_HEAD(&obj_event->obj_sub_list);
}
return 0;
}
static bool is_valid_events_legacy(int num_events, u16 *event_type_num_list,
struct devx_obj *obj)
{
int i;
for (i = 0; i < num_events; i++) {
if (obj) {
if (!is_legacy_obj_event_num(event_type_num_list[i]))
return false;
} else if (!is_legacy_unaffiliated_event_num(
event_type_num_list[i])) {
return false;
}
}
return true;
}
#define MAX_SUPP_EVENT_NUM 255
static bool is_valid_events(struct mlx5_core_dev *dev,
int num_events, u16 *event_type_num_list,
struct devx_obj *obj)
{
__be64 *aff_events;
__be64 *unaff_events;
int mask_entry;
int mask_bit;
int i;
if (MLX5_CAP_GEN(dev, event_cap)) {
aff_events = MLX5_CAP_DEV_EVENT(dev,
user_affiliated_events);
unaff_events = MLX5_CAP_DEV_EVENT(dev,
user_unaffiliated_events);
} else {
return is_valid_events_legacy(num_events, event_type_num_list,
obj);
}
for (i = 0; i < num_events; i++) {
if (event_type_num_list[i] > MAX_SUPP_EVENT_NUM)
return false;
mask_entry = event_type_num_list[i] / 64;
mask_bit = event_type_num_list[i] % 64;
if (obj) {
/* CQ completion */
if (event_type_num_list[i] == 0)
continue;
if (!(be64_to_cpu(aff_events[mask_entry]) &
(1ull << mask_bit)))
return false;
continue;
}
if (!(be64_to_cpu(unaff_events[mask_entry]) &
(1ull << mask_bit)))
return false;
}
return true;
}
#define MAX_NUM_EVENTS 16
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)(
struct uverbs_attr_bundle *attrs)
{
struct ib_uobject *devx_uobj = uverbs_attr_get_uobject(
attrs,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE);
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
struct ib_uobject *fd_uobj;
struct devx_obj *obj = NULL;
struct devx_async_event_file *ev_file;
struct mlx5_devx_event_table *devx_event_table = &dev->devx_event_table;
u16 *event_type_num_list;
struct devx_event_subscription *event_sub, *tmp_sub;
struct list_head sub_list;
int redirect_fd;
bool use_eventfd = false;
int num_events;
int num_alloc_xa_entries = 0;
u16 obj_type = 0;
u64 cookie = 0;
u32 obj_id = 0;
int err;
int i;
if (!c->devx_uid)
return -EINVAL;
if (!IS_ERR(devx_uobj)) {
obj = (struct devx_obj *)devx_uobj->object;
if (obj)
obj_id = get_dec_obj_id(obj->obj_id);
}
fd_uobj = uverbs_attr_get_uobject(attrs,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE);
if (IS_ERR(fd_uobj))
return PTR_ERR(fd_uobj);
ev_file = container_of(fd_uobj, struct devx_async_event_file,
uobj);
if (uverbs_attr_is_valid(attrs,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM)) {
err = uverbs_copy_from(&redirect_fd, attrs,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM);
if (err)
return err;
use_eventfd = true;
}
if (uverbs_attr_is_valid(attrs,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE)) {
if (use_eventfd)
return -EINVAL;
err = uverbs_copy_from(&cookie, attrs,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE);
if (err)
return err;
}
num_events = uverbs_attr_ptr_get_array_size(
attrs, MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST,
sizeof(u16));
if (num_events < 0)
return num_events;
if (num_events > MAX_NUM_EVENTS)
return -EINVAL;
event_type_num_list = uverbs_attr_get_alloced_ptr(attrs,
MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST);
if (!is_valid_events(dev->mdev, num_events, event_type_num_list, obj))
return -EINVAL;
INIT_LIST_HEAD(&sub_list);
/* Protect from concurrent subscriptions to same XA entries to allow
* both to succeed
*/
mutex_lock(&devx_event_table->event_xa_lock);
for (i = 0; i < num_events; i++) {
u32 key_level1;
if (obj)
obj_type = get_dec_obj_type(obj,
event_type_num_list[i]);
key_level1 = event_type_num_list[i] | obj_type << 16;
err = subscribe_event_xa_alloc(devx_event_table,
key_level1,
obj,
obj_id);
if (err)
goto err;
num_alloc_xa_entries++;
event_sub = kzalloc(sizeof(*event_sub), GFP_KERNEL);
if (!event_sub) {
err = -ENOMEM;
goto err;
}
list_add_tail(&event_sub->event_list, &sub_list);
uverbs_uobject_get(&ev_file->uobj);
if (use_eventfd) {
event_sub->eventfd =
eventfd_ctx_fdget(redirect_fd);
if (IS_ERR(event_sub->eventfd)) {
err = PTR_ERR(event_sub->eventfd);
event_sub->eventfd = NULL;
goto err;
}
}
event_sub->cookie = cookie;
event_sub->ev_file = ev_file;
/* May be needed upon cleanup the devx object/subscription */
event_sub->xa_key_level1 = key_level1;
event_sub->xa_key_level2 = obj_id;
INIT_LIST_HEAD(&event_sub->obj_list);
}
/* Once all the allocations and the XA data insertions were done we
* can go ahead and add all the subscriptions to the relevant lists
* without concern of a failure.
*/
list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) {
struct devx_event *event;
struct devx_obj_event *obj_event;
list_del_init(&event_sub->event_list);
spin_lock_irq(&ev_file->lock);
list_add_tail_rcu(&event_sub->file_list,
&ev_file->subscribed_events_list);
spin_unlock_irq(&ev_file->lock);
event = xa_load(&devx_event_table->event_xa,
event_sub->xa_key_level1);
WARN_ON(!event);
if (!obj) {
list_add_tail_rcu(&event_sub->xa_list,
&event->unaffiliated_list);
continue;
}
obj_event = xa_load(&event->object_ids, obj_id);
WARN_ON(!obj_event);
list_add_tail_rcu(&event_sub->xa_list,
&obj_event->obj_sub_list);
list_add_tail_rcu(&event_sub->obj_list,
&obj->event_sub);
}
mutex_unlock(&devx_event_table->event_xa_lock);
return 0;
err:
list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) {
list_del(&event_sub->event_list);
subscribe_event_xa_dealloc(devx_event_table,
event_sub->xa_key_level1,
obj,
obj_id);
if (event_sub->eventfd)
eventfd_ctx_put(event_sub->eventfd);
uverbs_uobject_put(&event_sub->ev_file->uobj);
kfree(event_sub);
}
mutex_unlock(&devx_event_table->event_xa_lock);
return err;
}
static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext,
struct uverbs_attr_bundle *attrs,
struct devx_umem *obj)
{
u64 addr;
size_t size;
u32 access;
int err;
if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) ||
uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN))
return -EFAULT;
err = uverbs_get_flags32(&access, attrs,
MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
IB_ACCESS_LOCAL_WRITE |
IB_ACCESS_REMOTE_WRITE |
IB_ACCESS_REMOTE_READ);
if (err)
return err;
err = ib_check_mr_access(&dev->ib_dev, access);
if (err)
return err;
obj->umem = ib_umem_get(&dev->ib_dev, addr, size, access);
if (IS_ERR(obj->umem))
return PTR_ERR(obj->umem);
return 0;
}
static unsigned int devx_umem_find_best_pgsize(struct ib_umem *umem,
unsigned long pgsz_bitmap)
{
unsigned long page_size;
/* Don't bother checking larger page sizes as offset must be zero and
* total DEVX umem length must be equal to total umem length.
*/
pgsz_bitmap &= GENMASK_ULL(max_t(u64, order_base_2(umem->length),
PAGE_SHIFT),
MLX5_ADAPTER_PAGE_SHIFT);
if (!pgsz_bitmap)
return 0;
page_size = ib_umem_find_best_pgoff(umem, pgsz_bitmap, U64_MAX);
if (!page_size)
return 0;
/* If the page_size is less than the CPU page size then we can use the
* offset and create a umem which is a subset of the page list.
* For larger page sizes we can't be sure the DMA list reflects the
* VA so we must ensure that the umem extent is exactly equal to the
* page list. Reduce the page size until one of these cases is true.
*/
while ((ib_umem_dma_offset(umem, page_size) != 0 ||
(umem->length % page_size) != 0) &&
page_size > PAGE_SIZE)
page_size /= 2;
return page_size;
}
static int devx_umem_reg_cmd_alloc(struct mlx5_ib_dev *dev,
struct uverbs_attr_bundle *attrs,
struct devx_umem *obj,
struct devx_umem_reg_cmd *cmd)
{
unsigned long pgsz_bitmap;
unsigned int page_size;
__be64 *mtt;
void *umem;
int ret;
/*
* If the user does not pass in pgsz_bitmap then the user promises not
* to use umem_offset!=0 in any commands that allocate on top of the
* umem.
*
* If the user wants to use a umem_offset then it must pass in
* pgsz_bitmap which guides the maximum page size and thus maximum
* object alignment inside the umem. See the PRM.
*
* Users are not allowed to use IOVA here, mkeys are not supported on
* umem.
*/
ret = uverbs_get_const_default(&pgsz_bitmap, attrs,
MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP,
GENMASK_ULL(63,
min(PAGE_SHIFT, MLX5_ADAPTER_PAGE_SHIFT)));
if (ret)
return ret;
page_size = devx_umem_find_best_pgsize(obj->umem, pgsz_bitmap);
if (!page_size)
return -EINVAL;
cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) +
(MLX5_ST_SZ_BYTES(mtt) *
ib_umem_num_dma_blocks(obj->umem, page_size));
cmd->in = uverbs_zalloc(attrs, cmd->inlen);
if (IS_ERR(cmd->in))
return PTR_ERR(cmd->in);
umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem);
mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt);
MLX5_SET(create_umem_in, cmd->in, opcode, MLX5_CMD_OP_CREATE_UMEM);
MLX5_SET64(umem, umem, num_of_mtt,
ib_umem_num_dma_blocks(obj->umem, page_size));
MLX5_SET(umem, umem, log_page_size,
order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT);
MLX5_SET(umem, umem, page_offset,
ib_umem_dma_offset(obj->umem, page_size));
mlx5_ib_populate_pas(obj->umem, page_size, mtt,
(obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) |
MLX5_IB_MTT_READ);
return 0;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)(
struct uverbs_attr_bundle *attrs)
{
struct devx_umem_reg_cmd cmd;
struct devx_umem *obj;
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE);
u32 obj_id;
struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
&attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
int err;
if (!c->devx_uid)
return -EINVAL;
obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL);
if (!obj)
return -ENOMEM;
err = devx_umem_get(dev, &c->ibucontext, attrs, obj);
if (err)
goto err_obj_free;
err = devx_umem_reg_cmd_alloc(dev, attrs, obj, &cmd);
if (err)
goto err_umem_release;
MLX5_SET(create_umem_in, cmd.in, uid, c->devx_uid);
err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out,
sizeof(cmd.out));
if (err)
goto err_umem_release;
obj->mdev = dev->mdev;
uobj->object = obj;
devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id);
uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE);
err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id,
sizeof(obj_id));
return err;
err_umem_release:
ib_umem_release(obj->umem);
err_obj_free:
kfree(obj);
return err;
}
static int devx_umem_cleanup(struct ib_uobject *uobject,
enum rdma_remove_reason why,
struct uverbs_attr_bundle *attrs)
{
struct devx_umem *obj = uobject->object;
u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
int err;
err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
if (err)
return err;
ib_umem_release(obj->umem);
kfree(obj);
return 0;
}
static bool is_unaffiliated_event(struct mlx5_core_dev *dev,
unsigned long event_type)
{
__be64 *unaff_events;
int mask_entry;
int mask_bit;
if (!MLX5_CAP_GEN(dev, event_cap))
return is_legacy_unaffiliated_event_num(event_type);
unaff_events = MLX5_CAP_DEV_EVENT(dev,
user_unaffiliated_events);
WARN_ON(event_type > MAX_SUPP_EVENT_NUM);
mask_entry = event_type / 64;
mask_bit = event_type % 64;
if (!(be64_to_cpu(unaff_events[mask_entry]) & (1ull << mask_bit)))
return false;
return true;
}
static u32 devx_get_obj_id_from_event(unsigned long event_type, void *data)
{
struct mlx5_eqe *eqe = data;
u32 obj_id = 0;
switch (event_type) {
case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
case MLX5_EVENT_TYPE_PATH_MIG:
case MLX5_EVENT_TYPE_COMM_EST:
case MLX5_EVENT_TYPE_SQ_DRAINED:
case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
obj_id = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff;
break;
case MLX5_EVENT_TYPE_XRQ_ERROR:
obj_id = be32_to_cpu(eqe->data.xrq_err.type_xrqn) & 0xffffff;
break;
case MLX5_EVENT_TYPE_DCT_DRAINED:
case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION:
obj_id = be32_to_cpu(eqe->data.dct.dctn) & 0xffffff;
break;
case MLX5_EVENT_TYPE_CQ_ERROR:
obj_id = be32_to_cpu(eqe->data.cq_err.cqn) & 0xffffff;
break;
default:
obj_id = MLX5_GET(affiliated_event_header, &eqe->data, obj_id);
break;
}
return obj_id;
}
static int deliver_event(struct devx_event_subscription *event_sub,
const void *data)
{
struct devx_async_event_file *ev_file;
struct devx_async_event_data *event_data;
unsigned long flags;
ev_file = event_sub->ev_file;
if (ev_file->omit_data) {
spin_lock_irqsave(&ev_file->lock, flags);
if (!list_empty(&event_sub->event_list) ||
ev_file->is_destroyed) {
spin_unlock_irqrestore(&ev_file->lock, flags);
return 0;
}
list_add_tail(&event_sub->event_list, &ev_file->event_list);
spin_unlock_irqrestore(&ev_file->lock, flags);
wake_up_interruptible(&ev_file->poll_wait);
return 0;
}
event_data = kzalloc(sizeof(*event_data) + sizeof(struct mlx5_eqe),
GFP_ATOMIC);
if (!event_data) {
spin_lock_irqsave(&ev_file->lock, flags);
ev_file->is_overflow_err = 1;
spin_unlock_irqrestore(&ev_file->lock, flags);
return -ENOMEM;
}
event_data->hdr.cookie = event_sub->cookie;
memcpy(event_data->hdr.out_data, data, sizeof(struct mlx5_eqe));
spin_lock_irqsave(&ev_file->lock, flags);
if (!ev_file->is_destroyed)
list_add_tail(&event_data->list, &ev_file->event_list);
else
kfree(event_data);
spin_unlock_irqrestore(&ev_file->lock, flags);
wake_up_interruptible(&ev_file->poll_wait);
return 0;
}
static void dispatch_event_fd(struct list_head *fd_list,
const void *data)
{
struct devx_event_subscription *item;
list_for_each_entry_rcu(item, fd_list, xa_list) {
if (item->eventfd)
eventfd_signal(item->eventfd, 1);
else
deliver_event(item, data);
}
}
static int devx_event_notifier(struct notifier_block *nb,
unsigned long event_type, void *data)
{
struct mlx5_devx_event_table *table;
struct mlx5_ib_dev *dev;
struct devx_event *event;
struct devx_obj_event *obj_event;
u16 obj_type = 0;
bool is_unaffiliated;
u32 obj_id;
/* Explicit filtering to kernel events which may occur frequently */
if (event_type == MLX5_EVENT_TYPE_CMD ||
event_type == MLX5_EVENT_TYPE_PAGE_REQUEST)
return NOTIFY_OK;
table = container_of(nb, struct mlx5_devx_event_table, devx_nb.nb);
dev = container_of(table, struct mlx5_ib_dev, devx_event_table);
is_unaffiliated = is_unaffiliated_event(dev->mdev, event_type);
if (!is_unaffiliated)
obj_type = get_event_obj_type(event_type, data);
rcu_read_lock();
event = xa_load(&table->event_xa, event_type | (obj_type << 16));
if (!event) {
rcu_read_unlock();
return NOTIFY_DONE;
}
if (is_unaffiliated) {
dispatch_event_fd(&event->unaffiliated_list, data);
rcu_read_unlock();
return NOTIFY_OK;
}
obj_id = devx_get_obj_id_from_event(event_type, data);
obj_event = xa_load(&event->object_ids, obj_id);
if (!obj_event) {
rcu_read_unlock();
return NOTIFY_DONE;
}
dispatch_event_fd(&obj_event->obj_sub_list, data);
rcu_read_unlock();
return NOTIFY_OK;
}
int mlx5_ib_devx_init(struct mlx5_ib_dev *dev)
{
struct mlx5_devx_event_table *table = &dev->devx_event_table;
int uid;
uid = mlx5_ib_devx_create(dev, false);
if (uid > 0) {
dev->devx_whitelist_uid = uid;
xa_init(&table->event_xa);
mutex_init(&table->event_xa_lock);
MLX5_NB_INIT(&table->devx_nb, devx_event_notifier, NOTIFY_ANY);
mlx5_eq_notifier_register(dev->mdev, &table->devx_nb);
}
return 0;
}
void mlx5_ib_devx_cleanup(struct mlx5_ib_dev *dev)
{
struct mlx5_devx_event_table *table = &dev->devx_event_table;
struct devx_event_subscription *sub, *tmp;
struct devx_event *event;
void *entry;
unsigned long id;
if (dev->devx_whitelist_uid) {
mlx5_eq_notifier_unregister(dev->mdev, &table->devx_nb);
mutex_lock(&dev->devx_event_table.event_xa_lock);
xa_for_each(&table->event_xa, id, entry) {
event = entry;
list_for_each_entry_safe(
sub, tmp, &event->unaffiliated_list, xa_list)
devx_cleanup_subscription(dev, sub);
kfree(entry);
}
mutex_unlock(&dev->devx_event_table.event_xa_lock);
xa_destroy(&table->event_xa);
mlx5_ib_devx_destroy(dev, dev->devx_whitelist_uid);
}
}
static ssize_t devx_async_cmd_event_read(struct file *filp, char __user *buf,
size_t count, loff_t *pos)
{
struct devx_async_cmd_event_file *comp_ev_file = filp->private_data;
struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue;
struct devx_async_data *event;
int ret = 0;
size_t eventsz;
spin_lock_irq(&ev_queue->lock);
while (list_empty(&ev_queue->event_list)) {
spin_unlock_irq(&ev_queue->lock);
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
if (wait_event_interruptible(
ev_queue->poll_wait,
(!list_empty(&ev_queue->event_list) ||
ev_queue->is_destroyed))) {
return -ERESTARTSYS;
}
spin_lock_irq(&ev_queue->lock);
if (ev_queue->is_destroyed) {
spin_unlock_irq(&ev_queue->lock);
return -EIO;
}
}
event = list_entry(ev_queue->event_list.next,
struct devx_async_data, list);
eventsz = event->cmd_out_len +
sizeof(struct mlx5_ib_uapi_devx_async_cmd_hdr);
if (eventsz > count) {
spin_unlock_irq(&ev_queue->lock);
return -ENOSPC;
}
list_del(ev_queue->event_list.next);
spin_unlock_irq(&ev_queue->lock);
if (copy_to_user(buf, &event->hdr, eventsz))
ret = -EFAULT;
else
ret = eventsz;
atomic_sub(event->cmd_out_len, &ev_queue->bytes_in_use);
kvfree(event);
return ret;
}
static __poll_t devx_async_cmd_event_poll(struct file *filp,
struct poll_table_struct *wait)
{
struct devx_async_cmd_event_file *comp_ev_file = filp->private_data;
struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue;
__poll_t pollflags = 0;
poll_wait(filp, &ev_queue->poll_wait, wait);
spin_lock_irq(&ev_queue->lock);
if (ev_queue->is_destroyed)
pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP;
else if (!list_empty(&ev_queue->event_list))
pollflags = EPOLLIN | EPOLLRDNORM;
spin_unlock_irq(&ev_queue->lock);
return pollflags;
}
static const struct file_operations devx_async_cmd_event_fops = {
.owner = THIS_MODULE,
.read = devx_async_cmd_event_read,
.poll = devx_async_cmd_event_poll,
.release = uverbs_uobject_fd_release,
.llseek = no_llseek,
};
static ssize_t devx_async_event_read(struct file *filp, char __user *buf,
size_t count, loff_t *pos)
{
struct devx_async_event_file *ev_file = filp->private_data;
struct devx_event_subscription *event_sub;
struct devx_async_event_data *event;
int ret = 0;
size_t eventsz;
bool omit_data;
void *event_data;
omit_data = ev_file->omit_data;
spin_lock_irq(&ev_file->lock);
if (ev_file->is_overflow_err) {
ev_file->is_overflow_err = 0;
spin_unlock_irq(&ev_file->lock);
return -EOVERFLOW;
}
while (list_empty(&ev_file->event_list)) {
spin_unlock_irq(&ev_file->lock);
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
if (wait_event_interruptible(ev_file->poll_wait,
(!list_empty(&ev_file->event_list) ||
ev_file->is_destroyed))) {
return -ERESTARTSYS;
}
spin_lock_irq(&ev_file->lock);
if (ev_file->is_destroyed) {
spin_unlock_irq(&ev_file->lock);
return -EIO;
}
}
if (omit_data) {
event_sub = list_first_entry(&ev_file->event_list,
struct devx_event_subscription,
event_list);
eventsz = sizeof(event_sub->cookie);
event_data = &event_sub->cookie;
} else {
event = list_first_entry(&ev_file->event_list,
struct devx_async_event_data, list);
eventsz = sizeof(struct mlx5_eqe) +
sizeof(struct mlx5_ib_uapi_devx_async_event_hdr);
event_data = &event->hdr;
}
if (eventsz > count) {
spin_unlock_irq(&ev_file->lock);
return -EINVAL;
}
if (omit_data)
list_del_init(&event_sub->event_list);
else
list_del(&event->list);
spin_unlock_irq(&ev_file->lock);
if (copy_to_user(buf, event_data, eventsz))
/* This points to an application issue, not a kernel concern */
ret = -EFAULT;
else
ret = eventsz;
if (!omit_data)
kfree(event);
return ret;
}
static __poll_t devx_async_event_poll(struct file *filp,
struct poll_table_struct *wait)
{
struct devx_async_event_file *ev_file = filp->private_data;
__poll_t pollflags = 0;
poll_wait(filp, &ev_file->poll_wait, wait);
spin_lock_irq(&ev_file->lock);
if (ev_file->is_destroyed)
pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP;
else if (!list_empty(&ev_file->event_list))
pollflags = EPOLLIN | EPOLLRDNORM;
spin_unlock_irq(&ev_file->lock);
return pollflags;
}
static void devx_free_subscription(struct rcu_head *rcu)
{
struct devx_event_subscription *event_sub =
container_of(rcu, struct devx_event_subscription, rcu);
if (event_sub->eventfd)
eventfd_ctx_put(event_sub->eventfd);
uverbs_uobject_put(&event_sub->ev_file->uobj);
kfree(event_sub);
}
static const struct file_operations devx_async_event_fops = {
.owner = THIS_MODULE,
.read = devx_async_event_read,
.poll = devx_async_event_poll,
.release = uverbs_uobject_fd_release,
.llseek = no_llseek,
};
static void devx_async_cmd_event_destroy_uobj(struct ib_uobject *uobj,
enum rdma_remove_reason why)
{
struct devx_async_cmd_event_file *comp_ev_file =
container_of(uobj, struct devx_async_cmd_event_file,
uobj);
struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue;
struct devx_async_data *entry, *tmp;
spin_lock_irq(&ev_queue->lock);
ev_queue->is_destroyed = 1;
spin_unlock_irq(&ev_queue->lock);
wake_up_interruptible(&ev_queue->poll_wait);
mlx5_cmd_cleanup_async_ctx(&comp_ev_file->async_ctx);
spin_lock_irq(&comp_ev_file->ev_queue.lock);
list_for_each_entry_safe(entry, tmp,
&comp_ev_file->ev_queue.event_list, list) {
list_del(&entry->list);
kvfree(entry);
}
spin_unlock_irq(&comp_ev_file->ev_queue.lock);
};
static void devx_async_event_destroy_uobj(struct ib_uobject *uobj,
enum rdma_remove_reason why)
{
struct devx_async_event_file *ev_file =
container_of(uobj, struct devx_async_event_file,
uobj);
struct devx_event_subscription *event_sub, *event_sub_tmp;
struct mlx5_ib_dev *dev = ev_file->dev;
spin_lock_irq(&ev_file->lock);
ev_file->is_destroyed = 1;
/* free the pending events allocation */
if (ev_file->omit_data) {
struct devx_event_subscription *event_sub, *tmp;
list_for_each_entry_safe(event_sub, tmp, &ev_file->event_list,
event_list)
list_del_init(&event_sub->event_list);
} else {
struct devx_async_event_data *entry, *tmp;
list_for_each_entry_safe(entry, tmp, &ev_file->event_list,
list) {
list_del(&entry->list);
kfree(entry);
}
}
spin_unlock_irq(&ev_file->lock);
wake_up_interruptible(&ev_file->poll_wait);
mutex_lock(&dev->devx_event_table.event_xa_lock);
/* delete the subscriptions which are related to this FD */
list_for_each_entry_safe(event_sub, event_sub_tmp,
&ev_file->subscribed_events_list, file_list) {
devx_cleanup_subscription(dev, event_sub);
list_del_rcu(&event_sub->file_list);
/* subscription may not be used by the read API any more */
call_rcu(&event_sub->rcu, devx_free_subscription);
}
mutex_unlock(&dev->devx_event_table.event_xa_lock);
put_device(&dev->ib_dev.dev);
};
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_UMEM_REG,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE,
MLX5_IB_OBJECT_DEVX_UMEM,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR,
UVERBS_ATTR_TYPE(u64),
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN,
UVERBS_ATTR_TYPE(u64),
UA_MANDATORY),
UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
enum ib_access_flags),
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP,
u64),
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
MLX5_IB_METHOD_DEVX_UMEM_DEREG,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE,
MLX5_IB_OBJECT_DEVX_UMEM,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_QUERY_EQN,
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_QUERY_UAR,
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_OTHER,
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_DEVX_OTHER_CMD_IN,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
UA_MANDATORY,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_PTR_OUT(
MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_OBJ_CREATE,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE,
MLX5_IB_OBJECT_DEVX_OBJ,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
UA_MANDATORY,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_PTR_OUT(
MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
MLX5_IB_METHOD_DEVX_OBJ_DESTROY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE,
MLX5_IB_OBJECT_DEVX_OBJ,
UVERBS_ACCESS_DESTROY,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_OBJ_MODIFY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE,
UVERBS_IDR_ANY_OBJECT,
UVERBS_ACCESS_WRITE,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
UA_MANDATORY,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_PTR_OUT(
MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_OBJ_QUERY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE,
UVERBS_IDR_ANY_OBJECT,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
UA_MANDATORY,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_PTR_OUT(
MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE,
UVERBS_IDR_ANY_OBJECT,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN,
UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
UA_MANDATORY,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN,
u16, UA_MANDATORY),
UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD,
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID,
UVERBS_ATTR_TYPE(u64),
UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT,
UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE,
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE,
MLX5_IB_OBJECT_DEVX_OBJ,
UVERBS_ACCESS_READ,
UA_OPTIONAL),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST,
UVERBS_ATTR_MIN_SIZE(sizeof(u16)),
UA_MANDATORY,
UA_ALLOC_AND_COPY),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE,
UVERBS_ATTR_TYPE(u64),
UA_OPTIONAL),
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM,
UVERBS_ATTR_TYPE(u32),
UA_OPTIONAL));
DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX,
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT));
DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ,
UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY));
DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM,
UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC,
UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE,
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
UVERBS_ACCESS_NEW,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_cmd_event_file),
devx_async_cmd_event_destroy_uobj,
&devx_async_cmd_event_fops, "[devx_async_cmd]",
O_RDONLY),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC,
UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE,
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS,
enum mlx5_ib_uapi_devx_create_event_channel_flags,
UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_event_file),
devx_async_event_destroy_uobj,
&devx_async_event_fops, "[devx_async_event]",
O_RDONLY),
&UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC));
static bool devx_is_supported(struct ib_device *device)
{
struct mlx5_ib_dev *dev = to_mdev(device);
return MLX5_CAP_GEN(dev->mdev, log_max_uctx);
}
const struct uapi_definition mlx5_ib_devx_defs[] = {
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
MLX5_IB_OBJECT_DEVX,
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
MLX5_IB_OBJECT_DEVX_OBJ,
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
MLX5_IB_OBJECT_DEVX_UMEM,
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
{},
};
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