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From: Suanming Mou <suanmingm@nvidia.com>
To: NBU-Contact-Thomas Monjalon <thomas@monjalon.net>,
	John Hurley <jhurley@nvidia.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, Ori Kam <orika@nvidia.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	Slava Ovsiienko <viacheslavo@nvidia.com>,
	Matan Azrad <matan@nvidia.com>,
	Raslan Darawsheh <rasland@nvidia.com>
Subject: Re: [dpdk-dev] [PATCH v3 4/4] regex/mlx5: prevent wrong calculation of free sqs in umr mode
Date: Wed, 7 Apr 2021 07:14:52 +0000
Message-ID: <BL0PR12MB25774BE15394B8AE8C509A49C1759@BL0PR12MB2577.namprd12.prod.outlook.com> (raw)
In-Reply-To: <3465474.71KI47HSL4@thomas>



> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: Wednesday, April 7, 2021 3:12 PM
> To: John Hurley <jhurley@nvidia.com>; Suanming Mou
> <suanmingm@nvidia.com>
> Cc: dev@dpdk.org; Ori Kam <orika@nvidia.com>; dev@dpdk.org; Slava
> Ovsiienko <viacheslavo@nvidia.com>; Matan Azrad <matan@nvidia.com>;
> Raslan Darawsheh <rasland@nvidia.com>
> Subject: Re: [dpdk-dev] [PATCH v3 4/4] regex/mlx5: prevent wrong calculation
> of free sqs in umr mode
> 
> 07/04/2021 03:00, Suanming Mou:
> > From: Thomas Monjalon <thomas@monjalon.net>
> > > 30/03/2021 03:39, Suanming Mou:
> > > > From: John Hurley <jhurley@nvidia.com>
> > > >
> > > > A recent change adds support for scattered mbuf and UMR support for
> regex.
> > > > Part of this commit makes the pi and ci counters of the regex_sq a
> > > > quarter of the length in non umr mode, effectively moving them
> > > > from 16 bits to 14. The new get_free method casts the difference
> > > > in pi and ci to a 16 bit value when calculating the free send
> > > > queues, accounting for any wrapping when pi has looped back to 0 but ci
> has not yet.
> > > > However, the move to 14 bits while still casting to 16 can now
> > > > lead to corrupted, large values returned.
> > > >
> > > > Modify the get_free function to take in the has_umr flag and,
> > > > accordingly, account for wrapping on either 14 or 16 bit pi/ci difference.
> > > >
> > > > Fixes: d55c9f637263 ("regex/mlx5: add data path scattered mbuf
> > > > process")
> > >
> > > It is fixing a patch in this series, right?
> > > Why not squashing them?
> >
> > Yes, this is a fix for this series.
> > This fix was done by John when he tested the code, so I put it as an individual
> one.
> > Should we update an new version to squash it?
> 
> Yes better to squash it in a v5, thanks.

OK, I see, thanks. Will update later.

> 
> > (And Thomas, the latest version of this series is v4, you comment in
> > this old v3 version now :) )
> 
> Yes, sorry.
> 


  reply	other threads:[~2021-04-07  7:15 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-09 23:57 [dpdk-dev] [PATCH 0/3] regex/mlx5: support scattered mbuf Suanming Mou
2021-03-09 23:57 ` [dpdk-dev] [PATCH 1/3] common/mlx5: add user memory registration bits Suanming Mou
2021-03-09 23:57 ` [dpdk-dev] [PATCH 2/3] regex/mlx5: add data path scattered mbuf process Suanming Mou
2021-03-09 23:57 ` [dpdk-dev] [PATCH 3/3] app/test-regex: support scattered mbuf input Suanming Mou
2021-03-24 21:14 ` [dpdk-dev] [PATCH 0/3] regex/mlx5: support scattered mbuf Thomas Monjalon
2021-03-25  4:32 ` [dpdk-dev] [PATCH v2 0/4] " Suanming Mou
2021-03-25  4:32   ` [dpdk-dev] [PATCH v2 1/4] common/mlx5: add user memory registration bits Suanming Mou
2021-03-29  9:29     ` Ori Kam
2021-03-25  4:32   ` [dpdk-dev] [PATCH v2 2/4] regex/mlx5: add data path scattered mbuf process Suanming Mou
2021-03-29  9:34     ` Ori Kam
2021-03-29  9:52       ` Suanming Mou
2021-03-25  4:32   ` [dpdk-dev] [PATCH v2 3/4] app/test-regex: support scattered mbuf input Suanming Mou
2021-03-29  9:27     ` Ori Kam
2021-03-25  4:32   ` [dpdk-dev] [PATCH v2 4/4] regex/mlx5: prevent wrong calculation of free sqs in umr mode Suanming Mou
2021-03-29  9:35     ` Ori Kam
2021-03-30  1:39 ` [dpdk-dev] [PATCH v3 0/4] regex/mlx5: support scattered mbuf Suanming Mou
2021-03-30  1:39   ` [dpdk-dev] [PATCH v3 1/4] common/mlx5: add user memory registration bits Suanming Mou
2021-03-30  1:39   ` [dpdk-dev] [PATCH v3 2/4] regex/mlx5: add data path scattered mbuf process Suanming Mou
2021-03-30  8:05     ` Slava Ovsiienko
2021-03-30  9:00       ` Suanming Mou
2021-03-30  1:39   ` [dpdk-dev] [PATCH v3 3/4] app/test-regex: support scattered mbuf input Suanming Mou
2021-03-30  1:39   ` [dpdk-dev] [PATCH v3 4/4] regex/mlx5: prevent wrong calculation of free sqs in umr mode Suanming Mou
2021-04-06 16:22     ` Thomas Monjalon
2021-04-07  1:00       ` Suanming Mou
2021-04-07  7:11         ` Thomas Monjalon
2021-04-07  7:14           ` Suanming Mou [this message]
2021-03-31  7:37 ` [dpdk-dev] [PATCH v4 0/4] regex/mlx5: support scattered mbuf Suanming Mou
2021-03-31  7:37   ` [dpdk-dev] [PATCH v4 1/4] common/mlx5: add user memory registration bits Suanming Mou
2021-03-31  7:37   ` [dpdk-dev] [PATCH v4 2/4] regex/mlx5: add data path scattered mbuf process Suanming Mou
2021-03-31  7:37   ` [dpdk-dev] [PATCH v4 3/4] app/test-regex: support scattered mbuf input Suanming Mou
2021-03-31  7:37   ` [dpdk-dev] [PATCH v4 4/4] regex/mlx5: prevent wrong calculation of free sqs in umr mode Suanming Mou
2021-04-07  7:21 ` [dpdk-dev] [PATCH v5 0/3] regex/mlx5: support scattered mbuf Suanming Mou
2021-04-07  7:21   ` [dpdk-dev] [PATCH v5 1/3] common/mlx5: add user memory registration bits Suanming Mou
2021-04-07  7:21   ` [dpdk-dev] [PATCH v5 2/3] regex/mlx5: add data path scattered mbuf process Suanming Mou
2021-04-07  7:21   ` [dpdk-dev] [PATCH v5 3/3] app/test-regex: support scattered mbuf input Suanming Mou
2021-04-08 20:53   ` [dpdk-dev] [PATCH v5 0/3] regex/mlx5: support scattered mbuf Thomas Monjalon

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