Driver: i40e
DPDK : 17.11
Configuration :
1) RSS configuration
rxmode.mq_mode = ETH_MQ_RX_RSS;
rss->rss_hf = ETH_RSS_UDP | ETH_RSS_TCP;
rss->rss_key = Microsoft key
rss->rss_key_len = 52
*configure RETA to some rx-queues
2) Change hash to TOEPLITZ (only for i40e)
struct rte_eth_hash_filter_info info = {};
info.info_type = RTE_ETH_HASH_FILTER_GLOBAL_CONFIG;
info.info.global_conf.hash_func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
rte_eth_dev_filter_ctrl(m_repid,
RTE_ETH_FILTER_HASH,
RTE_ETH_FILTER_SET, &info);
3) Configure some flow-director rules
4) TCP/UDP packets are received to the *right* core (based on a SW Toeplitz
calculation +reta table) however
The reported rss value is *wrong* in the mbuf
(m->hash.rss == *wrong value*)
((m->ol_flags&PKT_RX_RSS_HASH) == PKT_RX_RSS_HASH
5) The above works fine for mlx5 and ixgbe
6) I suspect the hash is something else, maybe flow-director id or xor hash ..
Wanted to know if this is a known issue. I can provide a simple way to
reproduce it using TRex
Thanks,
Hanoh
-----Original Message-----
From: Bruce Richardson [mailto:bruce.richard...@intel.com]
Sent: Thursday, March 22, 2018 1:35 PM
To: Hanoch Haim (hhaim)
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] i40e mbuf->rss indication
On Wed, Mar 21, 2018 at 06:47:22PM +0000, Hanoch Haim (hhaim) wrote:
> Hi All,
> DPDK:17.11
> When i40e is configured with RSS enabled and hash.type=toeplitz
>
> m->hash.rss = some weird number
> ((m->ol_flags&PKT_RX_RSS_HASH) == PKT_RX_RSS_HASH
>
> The hash value is correct and match the MS Toeplitz standard.
>
> Is this expected?
I'm sorry, but I don't quite follow the question, or the problem. Are you
meaning to say that the hash value is incorrect, or that the flag is not being
set or something else?
/Bruce
>
> The above works fine with ixgbe/mlx5
>
> Thanks,
> Hanoh
>
