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6#include <rdma/uverbs_ioctl.h>
7#include <rdma/mlx5_user_ioctl_cmds.h>
8#include <rdma/mlx5_user_ioctl_verbs.h>
9#include <linux/mlx5/driver.h>
10#include "mlx5_ib.h"
11
12#define UVERBS_MODULE_NAME mlx5_ib
13#include <rdma/uverbs_named_ioctl.h>
14
15static bool pp_is_supported(struct ib_device *device)
16{
17 struct mlx5_ib_dev *dev = to_mdev(device);
18
19 return (MLX5_CAP_GEN(dev->mdev, qos) &&
20 MLX5_CAP_QOS(dev->mdev, packet_pacing) &&
21 MLX5_CAP_QOS(dev->mdev, packet_pacing_uid));
22}
23
24static int UVERBS_HANDLER(MLX5_IB_METHOD_PP_OBJ_ALLOC)(
25 struct uverbs_attr_bundle *attrs)
26{
27 u8 rl_raw[MLX5_ST_SZ_BYTES(set_pp_rate_limit_context)] = {};
28 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
29 MLX5_IB_ATTR_PP_OBJ_ALLOC_HANDLE);
30 struct mlx5_ib_dev *dev;
31 struct mlx5_ib_ucontext *c;
32 struct mlx5_ib_pp *pp_entry;
33 void *in_ctx;
34 u16 uid;
35 int inlen;
36 u32 flags;
37 int err;
38
39 c = to_mucontext(ib_uverbs_get_ucontext(attrs));
40 if (IS_ERR(c))
41 return PTR_ERR(c);
42
43
44 if (!c->devx_uid)
45 return -EINVAL;
46
47 dev = to_mdev(c->ibucontext.device);
48 pp_entry = kzalloc(sizeof(*pp_entry), GFP_KERNEL);
49 if (!pp_entry)
50 return -ENOMEM;
51
52 in_ctx = uverbs_attr_get_alloced_ptr(attrs,
53 MLX5_IB_ATTR_PP_OBJ_ALLOC_CTX);
54 inlen = uverbs_attr_get_len(attrs,
55 MLX5_IB_ATTR_PP_OBJ_ALLOC_CTX);
56 memcpy(rl_raw, in_ctx, inlen);
57 err = uverbs_get_flags32(&flags, attrs,
58 MLX5_IB_ATTR_PP_OBJ_ALLOC_FLAGS,
59 MLX5_IB_UAPI_PP_ALLOC_FLAGS_DEDICATED_INDEX);
60 if (err)
61 goto err;
62
63 uid = (flags & MLX5_IB_UAPI_PP_ALLOC_FLAGS_DEDICATED_INDEX) ?
64 c->devx_uid : MLX5_SHARED_RESOURCE_UID;
65
66 err = mlx5_rl_add_rate_raw(dev->mdev, rl_raw, uid,
67 (flags & MLX5_IB_UAPI_PP_ALLOC_FLAGS_DEDICATED_INDEX),
68 &pp_entry->index);
69 if (err)
70 goto err;
71
72 pp_entry->mdev = dev->mdev;
73 uobj->object = pp_entry;
74 uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_PP_OBJ_ALLOC_HANDLE);
75
76 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_PP_OBJ_ALLOC_INDEX,
77 &pp_entry->index, sizeof(pp_entry->index));
78 return err;
79
80err:
81 kfree(pp_entry);
82 return err;
83}
84
85static int pp_obj_cleanup(struct ib_uobject *uobject,
86 enum rdma_remove_reason why,
87 struct uverbs_attr_bundle *attrs)
88{
89 struct mlx5_ib_pp *pp_entry = uobject->object;
90
91 mlx5_rl_remove_rate_raw(pp_entry->mdev, pp_entry->index);
92 kfree(pp_entry);
93 return 0;
94}
95
96DECLARE_UVERBS_NAMED_METHOD(
97 MLX5_IB_METHOD_PP_OBJ_ALLOC,
98 UVERBS_ATTR_IDR(MLX5_IB_ATTR_PP_OBJ_ALLOC_HANDLE,
99 MLX5_IB_OBJECT_PP,
100 UVERBS_ACCESS_NEW,
101 UA_MANDATORY),
102 UVERBS_ATTR_PTR_IN(
103 MLX5_IB_ATTR_PP_OBJ_ALLOC_CTX,
104 UVERBS_ATTR_SIZE(1,
105 MLX5_ST_SZ_BYTES(set_pp_rate_limit_context)),
106 UA_MANDATORY,
107 UA_ALLOC_AND_COPY),
108 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_PP_OBJ_ALLOC_FLAGS,
109 enum mlx5_ib_uapi_pp_alloc_flags,
110 UA_MANDATORY),
111 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_PP_OBJ_ALLOC_INDEX,
112 UVERBS_ATTR_TYPE(u16),
113 UA_MANDATORY));
114
115DECLARE_UVERBS_NAMED_METHOD_DESTROY(
116 MLX5_IB_METHOD_PP_OBJ_DESTROY,
117 UVERBS_ATTR_IDR(MLX5_IB_ATTR_PP_OBJ_DESTROY_HANDLE,
118 MLX5_IB_OBJECT_PP,
119 UVERBS_ACCESS_DESTROY,
120 UA_MANDATORY));
121
122DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_PP,
123 UVERBS_TYPE_ALLOC_IDR(pp_obj_cleanup),
124 &UVERBS_METHOD(MLX5_IB_METHOD_PP_OBJ_ALLOC),
125 &UVERBS_METHOD(MLX5_IB_METHOD_PP_OBJ_DESTROY));
126
127
128const struct uapi_definition mlx5_ib_qos_defs[] = {
129 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
130 MLX5_IB_OBJECT_PP,
131 UAPI_DEF_IS_OBJ_SUPPORTED(pp_is_supported)),
132 {},
133};
134
