From: Kiran Kumar Kokkilagadda <kirankumark@marvell.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>,
Thomas Monjalon <thomas@monjalon.net>,
Andrew Rybchenko <arybchenko@solarflare.com>
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Subject: Re: [dpdk-dev] [EXT] Re: [PATCH v7 1/3] ethdev: add level support for RSS offload types
Date: Tue, 1 Sep 2020 14:27:48 +0000 [thread overview]
Message-ID: <BYAPR18MB2965E0C92CD27F91B763DF81AC2E0@BYAPR18MB2965.namprd18.prod.outlook.com> (raw)
In-Reply-To: <ba39461a-cbc8-519b-bc9c-e52f2f7abc4b@intel.com>
> -----Original Message-----
> From: Ferruh Yigit <ferruh.yigit@intel.com>
> Sent: Tuesday, September 1, 2020 7:08 PM
> To: Kiran Kumar Kokkilagadda <kirankumark@marvell.com>; Thomas Monjalon
> <thomas@monjalon.net>; Andrew Rybchenko <arybchenko@solarflare.com>
> Cc: dev@dpdk.org; Jerin Jacob Kollanukkaran <jerinj@marvell.com>;
> orika@mellanox.com; xuanziyang2@huawei.com;
> cloud.wangxiaoyun@huawei.com; zhouguoyang@huawei.com;
> rosen.xu@intel.com; beilei.xing@intel.com; jia.guo@intel.com; Rasesh Mody
> <rmody@marvell.com>; Shahed Shaikh <shshaikh@marvell.com>; Nithin Kumar
> Dabilpuram <ndabilpuram@marvell.com>; qiming.yang@intel.com;
> qi.z.zhang@intel.com; keith.wiles@intel.com; hemant.agrawal@nxp.com;
> sachin.saxena@nxp.com; wei.zhao1@intel.com; johndale@cisco.com;
> hyonkim@cisco.com; chas3@att.com; matan@mellanox.com;
> shahafs@mellanox.com; viacheslavo@mellanox.com;
> rahul.lakkireddy@chelsio.com; grive@u256.net; Liron Himi
> <lironh@marvell.com>; jingjing.wu@intel.com; xavier.huwei@huawei.com;
> humin29@huawei.com; yisen.zhuang@huawei.com;
> ajit.khaparde@broadcom.com; somnath.kotur@broadcom.com;
> jasvinder.singh@intel.com; cristian.dumitrescu@intel.com
> Subject: [EXT] Re: [dpdk-dev][PATCH v7 1/3] ethdev: add level support for RSS
> offload types
>
> External Email
>
> ----------------------------------------------------------------------
> On 9/1/2020 4:27 AM, kirankumark@marvell.com wrote:
> > From: Kiran Kumar K <kirankumark@marvell.com>
> >
> > This patch reserves 2 bits as input selection to select Inner and
> > outer encapsulation level for RSS computation. It is combined with
> > existing
> > ETH_RSS_* to choose Inner or outer layers.
> > This functionality already exists in rte_flow through level parameter
> > in RSS action configuration rte_flow_action_rss.
> >
> > Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
> > ---
> > V7 Changes:
> > * Re-worked to keep it in sync with rte_flow_action_rss and support
> > upto
> > 3 levels.
> > * Addressed testpmd review comments.
> >
> > lib/librte_ethdev/rte_ethdev.h | 27 +++++++++++++++++++++++++++
> > 1 file changed, 27 insertions(+)
> >
> > diff --git a/lib/librte_ethdev/rte_ethdev.h
> > b/lib/librte_ethdev/rte_ethdev.h index 70295d7ab..13e49bbd7 100644
> > --- a/lib/librte_ethdev/rte_ethdev.h
> > +++ b/lib/librte_ethdev/rte_ethdev.h
> > @@ -552,6 +552,33 @@ struct rte_eth_rss_conf {
> > #define RTE_ETH_RSS_L3_PRE64 (1ULL << 53)
> > #define RTE_ETH_RSS_L3_PRE96 (1ULL << 52)
> >
> > +/*
> > + * We use the following macros to combine with the above layers to
> > +choose
> > + * inner and outer layers or both for RSS computation.
> > + * bit 50 and 51 are reserved for this.
> > + */
> > +
> > +/** level 0, requests the default behavior. Depending on the packet
> > + * type, it can mean outermost, innermost, anything in between or even no
> RSS.
> > + * It basically stands for the innermost encapsulation level RSS
> > + * can be performed on according to PMD and device capabilities.
> > + */
> > +#define ETH_RSS_LEVEL_0 (0ULL << 50)
>
> I can see from history how this is involved, but the 'ETH_RSS_LEVEL_0' naming is
> not really clear what it is, the naming in v6 is more clear.
>
> What about following one:
> 0 -> LEVEL_PMD_DEFAULT
> 1 -> LEVEL_OUTER
> 2 -> LEVEL_INNER
> 3 -> LEVEL_INNER_OUTER
>
> This doesn't exactly match to rte_flow one, but closer than v6 one. This ends
> with max level 2. And defines a way to say both inner and outer.
This one looks good to me. If everyone is ok with the proposed changes, I will send V8.
>
> > +
> > +/** level 1, requests RSS to be performed on the outermost packet
> > + * encapsulation level.
> > + */
> > +#define ETH_RSS_LEVEL_1 (1ULL << 50)
> > +
> > +/** level 2, requests RSS to be performed on the
> > + * specified inner packet encapsulation level, from outermost to
> > + * innermost (lower to higher values).
> > + */
> > +#define ETH_RSS_LEVEL_2 (2ULL << 50)
>
> I can see you are trying to copy rte_flow usage, but this doesn't really makes
> sense here. Where the value of the level is defined in this case? If not defined
> how the PMD knows which level to use?
>
> > +#define ETH_RSS_LEVEL_MASK (3ULL << 50)
> > +
> > +#define ETH_RSS_LEVEL(rss_hf) ((rss_hf & ETH_RSS_LEVEL_MASK) >> 50)
> > +
> > /**
> > * For input set change of hash filter, if SRC_ONLY and DST_ONLY of
> > * the same level are used simultaneously, it is the same case as
> > --
> > 2.25.1
> >
next prev parent reply other threads:[~2020-09-01 14:28 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-07 12:04 [dpdk-dev] [PATCH 1/2] " kirankumark
2020-08-07 12:04 ` [dpdk-dev] [PATCH 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-08 14:36 ` [dpdk-dev] [PATCH v2 1/2] ethdev: add level support for RSS offload types kirankumark
2020-08-08 14:36 ` [dpdk-dev] [PATCH v2 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-08 14:40 ` [dpdk-dev] [PATCH v2 1/2] ethdev: add level support for RSS offload types Ajit Khaparde
2020-08-14 3:55 ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-08-18 7:21 ` [dpdk-dev] [PATCH v3 " kirankumark
2020-08-18 7:21 ` [dpdk-dev] [PATCH v3 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-18 10:03 ` Jerin Jacob
2020-08-18 10:10 ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-08-18 10:31 ` [dpdk-dev] [PATCH v4 1/2] ethdev: add level support for RSS offload types kirankumark
2020-08-18 10:31 ` [dpdk-dev] [PATCH v4 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-18 10:52 ` [dpdk-dev] [PATCH v4 1/2] ethdev: add level support for RSS offload types Jeff Guo
2020-08-18 11:43 ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-08-19 6:04 ` [dpdk-dev] [PATCH v5 " kirankumark
2020-08-19 6:04 ` [dpdk-dev] [PATCH v5 2/2] net/octeontx2: add rss hash level support kirankumark
2020-08-20 3:19 ` [dpdk-dev] [PATCH v5 1/2] ethdev: add level support for RSS offload types Ajit Khaparde
2020-08-21 10:57 ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
2020-08-21 11:03 ` [dpdk-dev] [PATCH v6 1/3] " kirankumark
2020-08-21 11:03 ` [dpdk-dev] [PATCH v6 2/3] app/testpmd: support ethdev rss level config kirankumark
2020-08-29 0:48 ` Ajit Khaparde
2020-08-21 11:03 ` [dpdk-dev] [PATCH v6 3/3] net/octeontx2: add rss hash level support kirankumark
2020-08-29 14:52 ` [dpdk-dev] [PATCH v6 1/3] ethdev: add level support for RSS offload types Andrew Rybchenko
2020-09-01 13:23 ` Ferruh Yigit
2020-09-01 3:27 ` [dpdk-dev] [PATCH v7 " kirankumark
2020-09-01 3:27 ` [dpdk-dev] [PATCH v7 2/3] app/testpmd: support ethdev rss level config kirankumark
2020-09-01 3:27 ` [dpdk-dev] [PATCH v7 3/3] net/octeontx2: add rss hash level support kirankumark
2020-09-01 13:37 ` [dpdk-dev] [PATCH v7 1/3] ethdev: add level support for RSS offload types Ferruh Yigit
2020-09-01 14:27 ` Kiran Kumar Kokkilagadda [this message]
2020-09-01 14:44 ` [dpdk-dev] [EXT] " Ferruh Yigit
2020-09-01 14:54 ` Ferruh Yigit
2020-09-01 17:11 ` Ajit Khaparde
2020-09-03 10:11 ` Kiran Kumar Kokkilagadda
2020-09-03 13:14 ` Ferruh Yigit
2020-09-07 8:12 ` Andrew Rybchenko
2020-09-08 19:40 ` Ajit Khaparde
2020-09-17 2:07 ` [dpdk-dev] [PATCH v8 " kirankumark
2020-09-17 2:07 ` [dpdk-dev] [PATCH v8 2/3] app/testpmd: support ethdev rss level config kirankumark
2020-09-17 18:58 ` Ajit Khaparde
2020-09-17 2:07 ` [dpdk-dev] [PATCH v8 3/3] net/octeontx2: add rss hash level support kirankumark
2020-09-17 9:36 ` [dpdk-dev] [PATCH v8 1/3] ethdev: add level support for RSS offload types Andrew Rybchenko
2020-09-17 18:56 ` Ajit Khaparde
2020-09-18 11:40 ` Ferruh Yigit
2020-08-18 17:39 ` [dpdk-dev] [PATCH v3 1/2] " Ajit Khaparde
2020-08-19 3:58 ` [dpdk-dev] [EXT] " Kiran Kumar Kokkilagadda
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