Re: [dpdk-stable] [dpdk-dev] [PATCH v3] net/i40e: fix set rss hash function invalid

["Zhang, Qi Z" <qi.z.zhang@intel.com>]

> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Xing, Beilei
> Sent: Monday, June 21, 2021 4:19 PM
> To: Yang, SteveX <stevex.yang@intel.com>; dev@dpdk.org
> Cc: Yang, SteveX <stevex.yang@intel.com>; stable@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v3] net/i40e: fix set rss hash function invalid
> 
> 
> 
> > -----Original Message-----
> > From: dev <dev-bounces@dpdk.org> On Behalf Of Steve Yang
> > Sent: Monday, June 21, 2021 4:04 PM
> > To: dev@dpdk.org
> > Cc: Xing, Beilei <beilei.xing@intel.com>; Yang, SteveX
> > <stevex.yang@intel.com>; stable@dpdk.org
> > Subject: [dpdk-dev] [PATCH v3] net/i40e: fix set rss hash function
> > invalid
> >
> > i40e can support following rss hash function types: default/toeplitz,
> > symmetric toeplitz, and simple_xor. However, when filter engine parses
> > pattern action, it only supports symmetric toeplitz & default.
> >
> > Add simple_xor and toeplitz hash functions support when parsing
> > pattern action.
> >
> > Fixes: ef4c16fd9148 ("net/i40e: refactor RSS flow")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Steve Yang <stevex.yang@intel.com>
> > ---
> > v3:
> >  - add Cc stable line.
> > v2:
> >  - add the fix line.
> >  - support simple_xor and toeplitz hash functions explicitly.
> >
> >  drivers/net/i40e/i40e_hash.c | 20 ++++++++++++++------
> >  1 file changed, 14 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/net/i40e/i40e_hash.c
> > b/drivers/net/i40e/i40e_hash.c index b1cb24f437..0cef21c88f 100644
> > --- a/drivers/net/i40e/i40e_hash.c
> > +++ b/drivers/net/i40e/i40e_hash.c
> > @@ -1105,13 +1105,21 @@ i40e_hash_parse_pattern_act(const struct
> > rte_eth_dev *dev,
> >  					  NULL,
> >  					  "RSS Queues not supported when pattern
> specified");
> >
> > -	if (rss_act->func ==
> > RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ)
> > +	switch (rss_act->func) {
> > +	case RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ:
> >  		rss_conf->symmetric_enable = true;
> > -	else if (rss_act->func != RTE_ETH_HASH_FUNCTION_DEFAULT)
> > -		return rte_flow_error_set(error, -EINVAL,
> > -
> > RTE_FLOW_ERROR_TYPE_ACTION_CONF,
> > -					  NULL,
> > -					  "Only symmetric TOEPLITZ
> > supported when pattern specified");
> > +		break;
> > +	case RTE_ETH_HASH_FUNCTION_DEFAULT:
> > +	case RTE_ETH_HASH_FUNCTION_TOEPLITZ:
> > +	case RTE_ETH_HASH_FUNCTION_SIMPLE_XOR:
> > +		break;
> > +	default:
> > +		return rte_flow_error_set(error, EINVAL,
> > +				RTE_FLOW_ERROR_TYPE_ACTION_CONF,
> > +				NULL,
> > +				"RSS hash function not supported "
> > +				"when pattern specified");
> > +	}
> >
> >  	if (!i40e_hash_validate_rss_types(rss_act->types))
> >  		return rte_flow_error_set(error, EINVAL,
> > --
> > 2.27.0
> 
> Acked-by: Beilei Xing <beilei.xing@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi