Re: [dpdk-dev] [PATCH v3] net/i40e: fix queue region issue in RSS flow

["Iremonger, Bernard" <bernard.iremonger@intel.com>]

Hi Shougang,

> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Shougang Wang
> Sent: Wednesday, May 13, 2020 4:33 AM
> To: dev@dpdk.org
> Cc: Xing, Beilei <beilei.xing@intel.com>; Guo, Jia <jia.guo@intel.com>; Wang,
> ShougangX <shougangx.wang@intel.com>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH v3] net/i40e: fix queue region issue in RSS flow
> 
> This patch fixes the issue that the queue region does not take effect due to
> incorrectly setting the flow type.
> 
> Fixes: ecad87d22383 ("net/i40e: move RSS to flow API")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Shougang Wang <shougangx.wang@intel.com>
> Reviewed-by: Jeff Guo <jia.guo@intel.com>
> ---
>  drivers/net/i40e/i40e_flow.c | 35 ++++++++++++++++++++++++++++++++-
> --
>  1 file changed, 32 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
> index 7e64ae53a..2f937567b 100644
> --- a/drivers/net/i40e/i40e_flow.c
> +++ b/drivers/net/i40e/i40e_flow.c
> @@ -4625,6 +4625,34 @@ i40e_flow_parse_rss_action(struct rte_eth_dev
> *dev,
>  	uint32_t index = 0;
>  	uint64_t hf_bit = 1;
> 
> +	static const struct {
> +		uint64_t rss_type;
> +		enum i40e_filter_pctype pctype;
> +	} pctype_match_table[] = {
> +		{ETH_RSS_FRAG_IPV4,
> +			I40E_FILTER_PCTYPE_FRAG_IPV4},
> +		{ETH_RSS_NONFRAG_IPV4_TCP,
> +			I40E_FILTER_PCTYPE_NONF_IPV4_TCP},
> +		{ETH_RSS_NONFRAG_IPV4_UDP,
> +			I40E_FILTER_PCTYPE_NONF_IPV4_UDP},
> +		{ETH_RSS_NONFRAG_IPV4_SCTP,
> +			I40E_FILTER_PCTYPE_NONF_IPV4_SCTP},
> +		{ETH_RSS_NONFRAG_IPV4_OTHER,
> +			I40E_FILTER_PCTYPE_NONF_IPV4_OTHER},
> +		{ETH_RSS_FRAG_IPV6,
> +			I40E_FILTER_PCTYPE_FRAG_IPV6},
> +		{ETH_RSS_NONFRAG_IPV6_TCP,
> +			I40E_FILTER_PCTYPE_NONF_IPV6_TCP},
> +		{ETH_RSS_NONFRAG_IPV6_UDP,
> +			I40E_FILTER_PCTYPE_NONF_IPV6_UDP},
> +		{ETH_RSS_NONFRAG_IPV6_SCTP,
> +			I40E_FILTER_PCTYPE_NONF_IPV6_SCTP},
> +		{ETH_RSS_NONFRAG_IPV6_OTHER,
> +			I40E_FILTER_PCTYPE_NONF_IPV6_OTHER},
> +		{ETH_RSS_L2_PAYLOAD,
> +			I40E_FILTER_PCTYPE_L2_PAYLOAD},
> +	};

I don't think this is a complete list of RSS offload types.
See file librte_ethdev/rte_ethdev,h  lines 496 to 523.
See also app/test-pmd/config.c lines 77 to 121.


> +
>  	NEXT_ITEM_OF_ACTION(act, actions, index);
>  	rss = act->conf;
> 
> @@ -4641,9 +4669,10 @@ i40e_flow_parse_rss_action(struct rte_eth_dev
> *dev,
>  	}
> 
>  	if (p_info.action_flag) {
> -		for (n = 0; n < 64; n++) {
> -			if (rss->types & (hf_bit << n)) {
> -				conf_info->region[0].hw_flowtype[0] = n;
> +		for (j = 0; j < RTE_DIM(pctype_match_table); j++) {
> +			if (rss->types & pctype_match_table[j].rss_type) {
> +				conf_info->region[0].hw_flowtype[0] =
> +
> 	(uint8_t)pctype_match_table[j].pctype;
>  				conf_info->region[0].flowtype_num = 1;
>  				conf_info->queue_region_number = 1;
>  				break;
> --
> 2.17.1

Regards,

Bernard.