4 * Copyright(c) 2016 Intel Corporation. All rights reserved.
5 * Copyright(c) 2016 6WIND S.A.
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9 * modification, are permitted provided that the following conditions
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19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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38 #include <rte_mempool.h>
39 #include <rte_errno.h>
41 /* indirect jump table to support external memory pools. */
42 struct rte_mempool_ops_table rte_mempool_ops_table
= {
43 .sl
= RTE_SPINLOCK_INITIALIZER
,
47 /* add a new ops struct in rte_mempool_ops_table, return its index. */
49 rte_mempool_register_ops(const struct rte_mempool_ops
*h
)
51 struct rte_mempool_ops
*ops
;
54 rte_spinlock_lock(&rte_mempool_ops_table
.sl
);
56 if (rte_mempool_ops_table
.num_ops
>=
57 RTE_MEMPOOL_MAX_OPS_IDX
) {
58 rte_spinlock_unlock(&rte_mempool_ops_table
.sl
);
60 "Maximum number of mempool ops structs exceeded\n");
64 if (h
->alloc
== NULL
|| h
->enqueue
== NULL
||
65 h
->dequeue
== NULL
|| h
->get_count
== NULL
) {
66 rte_spinlock_unlock(&rte_mempool_ops_table
.sl
);
68 "Missing callback while registering mempool ops\n");
72 if (strlen(h
->name
) >= sizeof(ops
->name
) - 1) {
73 rte_spinlock_unlock(&rte_mempool_ops_table
.sl
);
74 RTE_LOG(DEBUG
, EAL
, "%s(): mempool_ops <%s>: name too long\n",
80 ops_index
= rte_mempool_ops_table
.num_ops
++;
81 ops
= &rte_mempool_ops_table
.ops
[ops_index
];
82 snprintf(ops
->name
, sizeof(ops
->name
), "%s", h
->name
);
83 ops
->alloc
= h
->alloc
;
85 ops
->enqueue
= h
->enqueue
;
86 ops
->dequeue
= h
->dequeue
;
87 ops
->get_count
= h
->get_count
;
89 rte_spinlock_unlock(&rte_mempool_ops_table
.sl
);
94 /* wrapper to allocate an external mempool's private (pool) data. */
96 rte_mempool_ops_alloc(struct rte_mempool
*mp
)
98 struct rte_mempool_ops
*ops
;
100 ops
= rte_mempool_get_ops(mp
->ops_index
);
101 return ops
->alloc(mp
);
104 /* wrapper to free an external pool ops. */
106 rte_mempool_ops_free(struct rte_mempool
*mp
)
108 struct rte_mempool_ops
*ops
;
110 ops
= rte_mempool_get_ops(mp
->ops_index
);
111 if (ops
->free
== NULL
)
116 /* wrapper to get available objects in an external mempool. */
118 rte_mempool_ops_get_count(const struct rte_mempool
*mp
)
120 struct rte_mempool_ops
*ops
;
122 ops
= rte_mempool_get_ops(mp
->ops_index
);
123 return ops
->get_count(mp
);
126 /* sets mempool ops previously registered by rte_mempool_register_ops. */
128 rte_mempool_set_ops_byname(struct rte_mempool
*mp
, const char *name
,
131 struct rte_mempool_ops
*ops
= NULL
;
134 /* too late, the mempool is already populated. */
135 if (mp
->flags
& MEMPOOL_F_POOL_CREATED
)
138 for (i
= 0; i
< rte_mempool_ops_table
.num_ops
; i
++) {
140 rte_mempool_ops_table
.ops
[i
].name
)) {
141 ops
= &rte_mempool_ops_table
.ops
[i
];
150 mp
->pool_config
= pool_config
;