RE: [EXTERNAL] Re: [PATCH v6 1/2] ethdev: support RSS based on RoCEv2 header

[Kiran Kumar Kokkilagadda <kirankumark@marvell.com>]

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From: Stephen Hemminger <stephen@networkplumber.org>
Sent: Tuesday, May 20, 2025 8:47 PM
To: Kiran Kumar Kokkilagadda <kirankumark@marvell.com>
Cc: Aman Singh <aman.deep.singh@intel.com>; Thomas Monjalon <thomas@monjalon.net>; Ferruh Yigit <ferruh.yigit@amd.com>; Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>; dev@dpdk.org
Subject: [EXTERNAL] Re: [PATCH v6 1/2] ethdev: support RSS based on RoCEv2 header

On Mon, 5 May 2025 11: 27: 15 +0530 <kirankumark@ marvell. com> wrote: > @@ -149,6 +151,7 @@ const struct rss_type_info rss_type_table[] = { > { "l3-dst-only", RTE_ETH_RSS_L3_DST_ONLY }, > { "l3-src-only", RTE_ETH_RSS_L3_SRC_ONLY


On Mon, 5 May 2025 11:27:15 +0530

<kirankumark@marvell.com<mailto:kirankumark@marvell.com>> wrote:

> @@ -149,6 +151,7 @@ const struct rss_type_info rss_type_table[] = {

>           { "l3-dst-only", RTE_ETH_RSS_L3_DST_ONLY },

>           { "l3-src-only", RTE_ETH_RSS_L3_SRC_ONLY },

>           { "ipv6-flow-label", RTE_ETH_RSS_IPV6_FLOW_LABEL },

> +        { "ib_bth", RTE_ETH_RSS_IB_BTH },



Please follow convention of other options. Use minus instead of underscore.

Consistency matters.



Ack. Will change it.



> diff --git a/doc/guides/rel_notes/release_25_07.rst b/doc/guides/rel_notes/release_25_07.rst

> index 093b85d206..d1293893be 100644

> --- a/doc/guides/rel_notes/release_25_07.rst

> +++ b/doc/guides/rel_notes/release_25_07.rst

> @@ -55,6 +55,10 @@ New Features

>       Also, make sure to start the actual text at the margin.

>       =======================================================

>

> +* **Added new RSS offload types for IB_BTH in RSS flow.**

> +

> +     Added ``RTE_ETH_RSS_IB_BTH`` macro so that the IB BTH header can be used as input set for RSS.

> +



Please add reference to the relevant standard and expand the acronym

at least one place in the documentation.



Ack. Will do.





> diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h

> index ea7f8c4a1a..edcd6b75b5 100644

> --- a/lib/ethdev/rte_ethdev.h

> +++ b/lib/ethdev/rte_ethdev.h

> @@ -602,6 +602,7 @@ struct rte_eth_rss_conf {

>

>  #define RTE_ETH_RSS_L2TPV2             RTE_BIT64(36)

>  #define RTE_ETH_RSS_IPV6_FLOW_LABEL    RTE_BIT64(37)

> +#define RTE_ETH_RSS_IB_BTH                        RTE_BIT64(38)

>



Why is the acronym IB_BTH rather than ROCEV2?

Wouldn't it be clearer if it followed convention?



This is to keep in sync with RTE_FLOW_TYPE_IB_BTH

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