Re: [dpdk-dev] [PATCH v6 1/2] ethdev: add packet integrity checks

[Thomas Monjalon <thomas@monjalon.net>]

18/04/2021 17:51, Gregory Etelson:
> +__extension__

That still doesn't make sense, as in v5.
The things which require a macro are anonymous union,
anonymous struct and some bit fields with special sizes.

> +struct rte_flow_item_integrity {
> +	/**< Tunnel encapsulation level the item should apply to.
> +	 * @see rte_flow_action_rss
> +	 */
> +	uint32_t level;

Should have RTE_STD_C11 here.

> +	union {

Should have RTE_STD_C11 here.

> +		struct {
> +			/**< The packet is valid after passing all HW checks. */
> +			uint64_t packet_ok:1;
> +			/**< L2 layer is valid after passing all HW checks. */
> +			uint64_t l2_ok:1;
> +			/**< L3 layer is valid after passing all HW checks. */
> +			uint64_t l3_ok:1;
> +			/**< L4 layer is valid after passing all HW checks. */
> +			uint64_t l4_ok:1;
> +			/**< L2 layer CRC is valid. */
> +			uint64_t l2_crc_ok:1;
> +			/**< IPv4 layer checksum is valid. */
> +			uint64_t ipv4_csum_ok:1;
> +			/**< L4 layer checksum is valid. */
> +			uint64_t l4_csum_ok:1;
> +			/**< The l3 length is smaller than the frame length. */
> +			uint64_t l3_len_ok:1;
> +			uint64_t reserved:56;

The reserved space looks useless since it is in an union.

> +		};

I'm not sure about the 64-bit bitfields.
Maybe that's why you need __extension__.
I feel 32 bits are enough.

> +		uint64_t value;
> +	};
> +};