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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(C) 2025 Marvell International Ltd.
*/
#include <rte_memzone.h>
#include <rte_node_mbuf_dynfield.h>
#include <node_private.h>
#include <eal_export.h>
#include <rte_errno.h>
#define NODE_MBUF_DYNFIELD_MEMZONE_NAME "__rte_node_mbuf_dynfield"
struct node_mbuf_dynfield_mz {
int dynfield_offset;
};
static const struct rte_mbuf_dynfield node_mbuf_dynfield_desc = {
.name = "rte_node_mbuf_dynfield",
.size = sizeof(rte_node_mbuf_dynfield_t),
.align = alignof(rte_node_mbuf_dynfield_t),
};
RTE_EXPORT_EXPERIMENTAL_SYMBOL(rte_node_mbuf_dynfield_register, 25.07);
int rte_node_mbuf_dynfield_register(void)
{
struct node_mbuf_dynfield_mz *f = NULL;
const struct rte_memzone *mz = NULL;
int dyn_offset;
RTE_BUILD_BUG_ON(sizeof(rte_node_mbuf_dynfield_t) < RTE_NODE_MBUF_DYNFIELD_SIZE);
RTE_BUILD_BUG_ON(sizeof(rte_node_mbuf_overload_fields_t) <
RTE_NODE_MBUF_OVERLOADABLE_FIELDS_SIZE);
mz = rte_memzone_lookup(NODE_MBUF_DYNFIELD_MEMZONE_NAME);
if (!mz) {
mz = rte_memzone_reserve_aligned(NODE_MBUF_DYNFIELD_MEMZONE_NAME,
sizeof(struct node_mbuf_dynfield_mz),
SOCKET_ID_ANY, 0,
RTE_CACHE_LINE_SIZE);
if (!mz) {
node_err("node_mbuf_dyn", "rte_memzone_reserve_aligned failed");
rte_errno = ENOMEM;
return -1;
}
dyn_offset = rte_mbuf_dynfield_register(&node_mbuf_dynfield_desc);
if (dyn_offset < 0) {
node_err("node_mbuf_dyn", "rte_mbuf_dynfield_register failed");
return dyn_offset;
}
f = (struct node_mbuf_dynfield_mz *)mz->addr;
f->dynfield_offset = dyn_offset;
node_dbg("node_mbuf_dyn", "memzone: %s of size: %zu at offset : %d",
mz->name, mz->len, f->dynfield_offset);
} else {
f = (struct node_mbuf_dynfield_mz *)mz->addr;
}
return f->dynfield_offset;
}
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