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From: Thomas Monjalon <thomas@monjalon.net>
To: Yongseok Koh <yskoh@mellanox.com>
Cc: dev@dpdk.org, wenzhuo.lu@intel.com, jingjing.wu@intel.com,
 olivier.matz@6wind.com, konstantin.ananyev@intel.com,
 arybchenko@solarflare.com, stephen@networkplumber.org,
 adrien.mazarguil@6wind.com, nelio.laranjeiro@6wind.com
Date: Fri, 27 Apr 2018 20:09:26 +0200
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Subject: Re: [dpdk-dev] [PATCH v8 1/2] mbuf: support attaching external
	buffer to mbuf
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27/04/2018 19:22, Yongseok Koh:
> This patch introduces a new way of attaching an external buffer to a mbuf.
> 
> Attaching an external buffer is quite similar to mbuf indirection in
> replacing buffer addresses and length of a mbuf, but a few differences:
>   - When an indirect mbuf is attached, refcnt of the direct mbuf would be
>     2 as long as the direct mbuf itself isn't freed after the attachment.
>     In such cases, the buffer area of a direct mbuf must be read-only. But
>     external buffer has its own refcnt and it starts from 1. Unless
>     multiple mbufs are attached to a mbuf having an external buffer, the
>     external buffer is writable.
>   - There's no need to allocate buffer from a mempool. Any buffer can be
>     attached with appropriate free callback.
>   - Smaller metadata is required to maintain shared data such as refcnt.
> 
> Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> Acked-by: Olivier Matz <olivier.matz@6wind.com>
> Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>

Series applied, thanks