From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Andrew Rybchenko <arybchenko@solarflare.com>, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] net/sfc: fix minimum number of Rx descriptors in ESSB mode
Date: Thu, 17 May 2018 16:20:32 +0100 [thread overview]
Message-ID: <87d9fedc-c301-d44e-bcbe-b6b1364e530f@intel.com> (raw)
In-Reply-To: <1526474136-10256-1-git-send-email-arybchenko@solarflare.com>
On 5/16/2018 1:35 PM, Andrew Rybchenko wrote:
> Number of descriptors in equal stride super-buffer Rx mode defines
> number of packet buffers to be used. Each HW Rx descriptor has
> many packet buffers and the number depends on total size of mbuf
> and CONFIG_RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB value.
> Typically it makes a bit less than 32 buffers per descriptor.
> Since HW Rx descriptors must be pushed by 8, it makes about 256
> as required minimum. Double it in advertised minimum to allow for
> at least 2 refill blocks.
>
> Fixes: 390f9b8d82c9 ("net/sfc: support equal stride super-buffer Rx mode")
>
> Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Applied to dpdk-next-net/master, thanks.
prev parent reply other threads:[~2018-05-17 15:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-16 12:35 Andrew Rybchenko
2018-05-17 15:20 ` Ferruh Yigit [this message]
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