DPDK patches and discussions
 help / color / mirror / Atom feed
From: Jose Gavine Cueto <pepedocs@gmail.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Subject: [dpdk-dev] rte_ring_sc_dequeue returns 0 but sets packet to NULL
Date: Tue, 19 Nov 2013 18:35:16 +0800	[thread overview]
Message-ID: <CAJ5bv6GPxs++faBwwnm9wfQbSxPbXO6PtQ2NY+Wg3oUs57ddpA@mail.gmail.com> (raw)

Hi,

I am encountering a strange behavior of rte_ring_sc_dequeue, though I'm not
yet sure what causes this.

I have a code:

rc = rte_ring_sc_dequeue(fwdp->rxtx_rings->xmit_ring, &rpackets);

At first dequeue, rpackets gets a correct address of an rte_mbuf, however
at the second dequeue it returns 0 which is successful but sets the
rte_mbuf result to a NULL value.  Is this even possible, because its
happening in my scenario.  Or it could be just there's something wrong with
my code.

Cheers,
Pepe

-- 
To stop learning is like to stop loving.

             reply	other threads:[~2013-11-19 10:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-19 10:35 Jose Gavine Cueto [this message]
     [not found] ` <000301cee54e$bb49d170$31dd7450$@com>
     [not found]   ` <CAJ5bv6G+BiB2XSg-sUDeQLg85=S02+Y0m79CjBxfQo=aQOGBXw@mail.gmail.com>
     [not found]     ` <002f01cee5c9$eb6bf0b0$c243d210$@com>
     [not found]       ` <CAJ5bv6H3ye9LkA5M4SB_QjADjHOx1hnw7RQkVBrJ3nzHeGaEBg@mail.gmail.com>
     [not found]         ` <CAGNKSKc+=SeWXhohZWte4k8OjQz9q=i4seqm7JznQQB6T9sWoA@mail.gmail.com>
     [not found]           ` <CAJ5bv6GM5vX8QR+bg8gmiEBtGYeQ15iKRmyRGyZ2Tv4VEDqagw@mail.gmail.com>
2013-11-20  9:19             ` Etai Lev-Ran
2013-11-20 18:32               ` Jeff Venable
2013-11-20 19:20                 ` elevran
2013-11-22  9:54               ` Richardson, Bruce

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAJ5bv6GPxs++faBwwnm9wfQbSxPbXO6PtQ2NY+Wg3oUs57ddpA@mail.gmail.com \
    --to=pepedocs@gmail.com \
    --cc=dev@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).