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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/*
* Copyright (c) 2020, Mellanox Technologies inc. All rights reserved.
*/
#include <rdma/uverbs_ioctl.h>
#include <rdma/mlx5_user_ioctl_cmds.h>
#include <rdma/mlx5_user_ioctl_verbs.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/eswitch.h>
#include <linux/mlx5/vport.h>
#include "mlx5_ib.h"
#define UVERBS_MODULE_NAME mlx5_ib
#include <rdma/uverbs_named_ioctl.h>
static int UVERBS_HANDLER(MLX5_IB_METHOD_PD_QUERY)(
struct uverbs_attr_bundle *attrs)
{
struct ib_pd *pd =
uverbs_attr_get_obj(attrs, MLX5_IB_ATTR_QUERY_PD_HANDLE);
struct mlx5_ib_pd *mpd = to_mpd(pd);
return uverbs_copy_to(attrs, MLX5_IB_ATTR_QUERY_PD_RESP_PDN,
&mpd->pdn, sizeof(mpd->pdn));
}
static int fill_vport_icm_addr(struct mlx5_core_dev *mdev, u16 vport,
struct mlx5_ib_uapi_query_port *info)
{
u32 out[MLX5_ST_SZ_DW(query_esw_vport_context_out)] = {};
u32 in[MLX5_ST_SZ_DW(query_esw_vport_context_in)] = {};
bool sw_owner_supp;
u64 icm_rx;
u64 icm_tx;
int err;
sw_owner_supp = MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, sw_owner) ||
MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, sw_owner_v2);
if (vport == MLX5_VPORT_UPLINK) {
icm_rx = MLX5_CAP64_ESW_FLOWTABLE(mdev,
sw_steering_uplink_icm_address_rx);
icm_tx = MLX5_CAP64_ESW_FLOWTABLE(mdev,
sw_steering_uplink_icm_address_tx);
} else {
MLX5_SET(query_esw_vport_context_in, in, opcode,
MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT);
MLX5_SET(query_esw_vport_context_in, in, vport_number, vport);
MLX5_SET(query_esw_vport_context_in, in, other_vport, true);
err = mlx5_cmd_exec_inout(mdev, query_esw_vport_context, in,
out);
if (err)
return err;
icm_rx = MLX5_GET64(
query_esw_vport_context_out, out,
esw_vport_context.sw_steering_vport_icm_address_rx);
icm_tx = MLX5_GET64(
query_esw_vport_context_out, out,
esw_vport_context.sw_steering_vport_icm_address_tx);
}
if (sw_owner_supp && icm_rx) {
info->vport_steering_icm_rx = icm_rx;
info->flags |=
MLX5_IB_UAPI_QUERY_PORT_VPORT_STEERING_ICM_RX;
}
if (sw_owner_supp && icm_tx) {
info->vport_steering_icm_tx = icm_tx;
info->flags |=
MLX5_IB_UAPI_QUERY_PORT_VPORT_STEERING_ICM_TX;
}
return 0;
}
static int fill_vport_vhca_id(struct mlx5_core_dev *mdev, u16 vport,
struct mlx5_ib_uapi_query_port *info)
{
size_t out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
u32 in[MLX5_ST_SZ_DW(query_hca_cap_in)] = {};
void *out;
int err;
out = kzalloc(out_sz, GFP_KERNEL);
if (!out)
return -ENOMEM;
MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
MLX5_SET(query_hca_cap_in, in, other_function, true);
MLX5_SET(query_hca_cap_in, in, function_id, vport);
MLX5_SET(query_hca_cap_in, in, op_mod,
MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE |
HCA_CAP_OPMOD_GET_CUR);
err = mlx5_cmd_exec(mdev, in, sizeof(in), out, out_sz);
if (err)
goto out;
info->vport_vhca_id = MLX5_GET(query_hca_cap_out, out,
capability.cmd_hca_cap.vhca_id);
info->flags |= MLX5_IB_UAPI_QUERY_PORT_VPORT_VHCA_ID;
out:
kfree(out);
return err;
}
static int fill_switchdev_info(struct mlx5_ib_dev *dev, u32 port_num,
struct mlx5_ib_uapi_query_port *info)
{
struct mlx5_core_dev *mdev = dev->mdev;
struct mlx5_eswitch_rep *rep;
int err;
rep = dev->port[port_num - 1].rep;
if (!rep)
return -EOPNOTSUPP;
info->vport = rep->vport;
info->flags |= MLX5_IB_UAPI_QUERY_PORT_VPORT;
if (rep->vport != MLX5_VPORT_UPLINK) {
err = fill_vport_vhca_id(mdev, rep->vport, info);
if (err)
return err;
}
info->esw_owner_vhca_id = MLX5_CAP_GEN(mdev, vhca_id);
info->flags |= MLX5_IB_UAPI_QUERY_PORT_ESW_OWNER_VHCA_ID;
err = fill_vport_icm_addr(mdev, rep->vport, info);
if (err)
return err;
if (mlx5_eswitch_vport_match_metadata_enabled(mdev->priv.eswitch)) {
info->reg_c0.value = mlx5_eswitch_get_vport_metadata_for_match(
mdev->priv.eswitch, rep->vport);
info->reg_c0.mask = mlx5_eswitch_get_vport_metadata_mask();
info->flags |= MLX5_IB_UAPI_QUERY_PORT_VPORT_REG_C0;
}
return 0;
}
static int UVERBS_HANDLER(MLX5_IB_METHOD_QUERY_PORT)(
struct uverbs_attr_bundle *attrs)
{
struct mlx5_ib_uapi_query_port info = {};
struct mlx5_ib_ucontext *c;
struct mlx5_ib_dev *dev;
u32 port_num;
int ret;
if (uverbs_copy_from(&port_num, attrs,
MLX5_IB_ATTR_QUERY_PORT_PORT_NUM))
return -EFAULT;
c = to_mucontext(ib_uverbs_get_ucontext(attrs));
if (IS_ERR(c))
return PTR_ERR(c);
dev = to_mdev(c->ibucontext.device);
if (!rdma_is_port_valid(&dev->ib_dev, port_num))
return -EINVAL;
if (mlx5_eswitch_mode(dev->mdev) == MLX5_ESWITCH_OFFLOADS) {
ret = fill_switchdev_info(dev, port_num, &info);
if (ret)
return ret;
}
return uverbs_copy_to_struct_or_zero(attrs, MLX5_IB_ATTR_QUERY_PORT, &info,
sizeof(info));
}
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_QUERY_PORT,
UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_QUERY_PORT_PORT_NUM,
UVERBS_ATTR_TYPE(u32), UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(
MLX5_IB_ATTR_QUERY_PORT,
UVERBS_ATTR_STRUCT(struct mlx5_ib_uapi_query_port,
reg_c0),
UA_MANDATORY));
ADD_UVERBS_METHODS(mlx5_ib_device,
UVERBS_OBJECT_DEVICE,
&UVERBS_METHOD(MLX5_IB_METHOD_QUERY_PORT));
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_PD_QUERY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_QUERY_PD_HANDLE,
UVERBS_OBJECT_PD,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_QUERY_PD_RESP_PDN,
UVERBS_ATTR_TYPE(u32),
UA_MANDATORY));
ADD_UVERBS_METHODS(mlx5_ib_pd,
UVERBS_OBJECT_PD,
&UVERBS_METHOD(MLX5_IB_METHOD_PD_QUERY));
const struct uapi_definition mlx5_ib_std_types_defs[] = {
UAPI_DEF_CHAIN_OBJ_TREE(
UVERBS_OBJECT_PD,
&mlx5_ib_pd),
UAPI_DEF_CHAIN_OBJ_TREE(
UVERBS_OBJECT_DEVICE,
&mlx5_ib_device),
{},
};
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