From: "Wiles, Keith" <keith.wiles@intel.com>
To: "Александр Самойлов" <cidjey1991@mail.ru>, users <users@dpdk.org>
Subject: Re: [dpdk-users] A question about rte_pktmbuf_init() and alike functions
Date: Tue, 3 Nov 2015 19:27:54 +0000 [thread overview]
Message-ID: <48648717-1A5C-4292-AA60-17A08126F89D@intel.com> (raw)
In-Reply-To: <1446578609.273825053@f418.i.mail.ru>
On 11/3/15, 1:23 PM, "users on behalf of Александр Самойлов" <users-bounces@dpdk.org on behalf of cidjey1991@mail.ru> wrote:
> An update. I decided to try this:
>
>m = rte_pktmbuf_alloc(mp);
>if(unlikely(m == NULL))
>{
> RTE_LOG(INFO, USER1, "%s: Couldn't allocate pkt_mbuf\n", __func__);
> return NULL;
>}
>rte_pktmbuf_init(mp, NULL, m, 0);
>rte_mbuf_refcnt_set(m, 1);
>Well, it worked out. My memory is not dirty anymore and TCP checksum is always OK. Thank you for the input.
>But this raises another question: You said that rte_pktmbuf_alloc() implies resetting the buffer to a "sane state".
>So why this reset doesn't make my new "m" buffer "sane enough" to keep a new frame while rte_pktmbuf_init does?
You can look at the code, but the reset tries to do the least amount work in touching the mbuf header for performance.
>
>
>Alex Samoylov
>
>
>
Regards,
Keith
next prev parent reply other threads:[~2015-11-03 19:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-03 19:23 Александр Самойлов
2015-11-03 19:27 ` Wiles, Keith [this message]
2015-11-03 19:44 ` Александр Самойлов
-- strict thread matches above, loose matches on Subject: below --
2015-11-03 17:49 Александр Самойлов
2015-11-03 18:52 ` Wiles, Keith
2015-11-03 18:53 ` Matt Laswell
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