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From: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
To: Nipun Gupta <nipun.gupta@nxp.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "thomas@monjalon.net" <thomas@monjalon.net>,
	"ferruh.yigit@intel.com" <ferruh.yigit@intel.com>,
	Hemant Agrawal <hemant.agrawal@nxp.com>,
	Sachin Saxena <sachin.saxena@nxp.com>,
	Rohit Raj <rohit.raj@nxp.com>,
	"jerinjacobk@gmail.com" <jerinjacobk@gmail.com>,
	"stephen@networkplumber.org" <stephen@networkplumber.org>,
	"asafp@nvidia.com" <asafp@nvidia.com>
Subject: Re: [dpdk-dev] [PATCH 1/3 v3] ethdev: add rx offload to drop error packets
Date: Tue, 13 Oct 2020 10:21:43 +0300
Message-ID: <d4a56ed4-1808-6845-b939-9549667a5b6a@oktetlabs.ru> (raw)
In-Reply-To: <f3baa74b-0c5d-6561-281f-61525d4db404@oktetlabs.ru>

On 10/12/20 3:22 PM, Andrew Rybchenko wrote:
> On 10/12/20 2:30 PM, Nipun Gupta wrote:
>>> -----Original Message-----
>>> From: Andrew Rybchenko <Andrew.Rybchenko@oktetlabs.ru>
>>> Sent: Monday, October 12, 2020 1:32 PM
>>> To: Nipun Gupta <nipun.gupta@nxp.com>; dev@dpdk.org
>>> Cc: thomas@monjalon.net; ferruh.yigit@intel.com; arybchenko@solarflare.com;
>>> Hemant Agrawal <hemant.agrawal@nxp.com>; Sachin Saxena
>>> <sachin.saxena@nxp.com>; Rohit Raj <rohit.raj@nxp.com>;
>>> jerinjacobk@gmail.com; stephen@networkplumber.org; asafp@nvidia.com
>>> Subject: Re: [dpdk-dev] [PATCH 1/3 v3] ethdev: add rx offload to drop error
>>> packets
>>>
>>> On 10/9/20 4:13 PM, nipun.gupta@nxp.com wrote:
>>>> From: Nipun Gupta <nipun.gupta@nxp.com>
>>>>
>>>> This change adds a RX offload capability and configuration to
>>>> enable hardware to drop the packets in case of any error in the
>>>> packets such as L3 checksum error or L4 checksum.
>>>>
>>>> Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
>>>> Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
>>>> Reviewed-by: Asaf Penso <asafp@nvidia.com>

Thinking a bit more about it I agree with Thomas idea that
it should be flow API based solution in fact.
Drop is just a one of possible actions to be done with
packets with bad checksum on one or another layer.
Such packets could be redirected to a slow path
(dedicated queue or port ID (PF, VF)).
It is just a missing feature in various layer
pattern match to say if we want to proceed with packets
with only good or only bad chehcksum (or we don't care
as we do right now). Exact match for checksums is hardly
useful except UDP with zero checksum case.

  parent reply	other threads:[~2020-10-13  7:21 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-31  7:53 [dpdk-dev] [PATCH] " Nipun Gupta
2020-08-31 12:58 ` Ferruh Yigit
2020-08-31 16:04   ` Nipun Gupta
2020-08-31 17:00 ` Stephen Hemminger
2020-09-01  8:09   ` Thomas Monjalon
2020-09-01 10:56     ` Nipun Gupta
2020-09-21  7:29     ` Ori Kam
2020-10-05  7:15 ` [dpdk-dev] [PATCH 1/3 v2] " nipun.gupta
2020-10-05  7:15   ` [dpdk-dev] [PATCH 2/3 v2] net/dpaa: support RX offload for error packet drop nipun.gupta
2020-10-05  7:15   ` [dpdk-dev] [PATCH 3/3 v2] testpmd: support hardware offload to drop error packets nipun.gupta
2020-10-08 15:06     ` Asaf Penso
2020-10-08 15:45       ` Nipun Gupta
2020-10-05 15:34   ` [dpdk-dev] [PATCH 1/3 v2] ethdev: add rx " Stephen Hemminger
2020-10-05 16:10     ` Jerin Jacob
2020-10-06 10:37       ` Nipun Gupta
2020-10-06 12:01         ` Jerin Jacob
2020-10-06 13:10           ` Nipun Gupta
2020-10-06 13:13             ` Jerin Jacob
2020-10-08  8:53               ` Nipun Gupta
2020-10-08  8:55                 ` Jerin Jacob
2020-10-08 15:13                   ` Asaf Penso
2020-10-09 13:13 ` [dpdk-dev] [PATCH 1/3 v3] " nipun.gupta
2020-10-09 13:13   ` [dpdk-dev] [PATCH 2/3 v3] net/dpaa: support RX offload for error packet drop nipun.gupta
2020-10-09 13:13   ` [dpdk-dev] [PATCH 3/3 v3] app/testpmd: support hardware offload to drop error packets nipun.gupta
2020-10-11  7:22     ` Asaf Penso
2020-10-11 10:13   ` [dpdk-dev] [PATCH 1/3 v3] ethdev: add rx " Jerin Jacob
2020-10-11 21:41   ` Thomas Monjalon
2020-10-12  5:40     ` Nipun Gupta
2020-10-13  7:22       ` Nipun Gupta
2020-10-12  8:01   ` Andrew Rybchenko
2020-10-12 11:30     ` Nipun Gupta
2020-10-12 12:22       ` Andrew Rybchenko
2020-10-12 12:53         ` Nipun Gupta
2020-10-13  7:21         ` Andrew Rybchenko [this message]
2020-10-13  7:36           ` Nipun Gupta
2020-10-13  7:51             ` Andrew Rybchenko
2020-10-13  8:12               ` Nipun Gupta
2020-10-15 13:23 ` [dpdk-dev] [PATCH 1/3 v4] ethdev: add Rx " nipun.gupta
2020-10-15 13:23   ` [dpdk-dev] [PATCH 2/3 v4] net/dpaa: support Rx offload for error packet drop nipun.gupta
2020-10-15 13:23   ` [dpdk-dev] [PATCH 3/3 v4] app/testpmd: support hardware offload to drop error packets nipun.gupta
2020-10-29 17:22     ` Dharmik Thakkar
2020-10-31 18:16       ` Nipun Gupta
2020-10-19  3:30   ` [dpdk-dev] [PATCH 1/3 v4] ethdev: add Rx " Ajit Khaparde
2021-02-18 20:32   ` Ferruh Yigit
2021-02-18 20:37     ` Thomas Monjalon
2021-04-20  1:11       ` Ferruh Yigit

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