[PATCH v5] net: add thread-safe crc api

[Stephen Hemminger]

On Fri,  7 Feb 2025 18:24:43 +0000
Arkadiusz Kusztal <arkadiuszx.kusztal at intel.com> wrote:

> +static struct
> +{
> +	rte_net_crc_handler f[RTE_NET_CRC_REQS];
> +} handlers_dpdk26[RTE_NET_CRC_AVX512 + 1];
> +

Should have { after the struct

+void rte_net_crc_free(struct rte_net_crc *crc)
+{
+	rte_free(crc);
+}

Add rte_net_crc_free to the coccinelle script that checks for null free.
Also add function attributes please.

> diff --git a/lib/net/rte_net_crc.h b/lib/net/rte_net_crc.h
> index 72d3e10ff6..ffac8c2f1f 100644
> --- a/lib/net/rte_net_crc.h
> +++ b/lib/net/rte_net_crc.h
> @@ -1,5 +1,5 @@
>  /* SPDX-License-Identifier: BSD-3-Clause
> - * Copyright(c) 2017-2020 Intel Corporation
> + * Copyright(c) 2017-2025 Intel Corporation
>   */

Not sure what DPDK policy is around copyright date updates.
The Linux kernel has said no to this (excess churn).

> +struct rte_net_crc *rte_net_crc_set_alg_v26(enum rte_net_crc_alg alg,
> +	enum rte_net_crc_type type)

Since this now an allocator should add function attributes __rte_malloc
and __rte_dealloc(rte_crc_free, 1).


> +{
> +	uint16_t max_simd_bitwidth;
> +	struct rte_net_crc *crc;
> +
> +	crc = rte_zmalloc(NULL, sizeof(struct rte_net_crc), 0);
> +	if (crc == NULL)
> +		return NULL;

Are you using rte_malloc here because it can be shared between primary/secondary?
Otherwise regular malloc has more checks.