DPDK patches and discussions
 help / color / mirror / Atom feed
From: Olivier Matz <olivier.matz@6wind.com>
To: Slava Ovsiienko <viacheslavo@mellanox.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>,
	"dev@dpdk.org" <dev@dpdk.org>, Matan Azrad <matan@mellanox.com>,
	Raslan Darawsheh <rasland@mellanox.com>,
	Ori Kam <orika@mellanox.com>,
	Shahaf Shuler <shahafs@mellanox.com>,
	"thomas@mellanox.net" <thomas@mellanox.net>
Subject: Re: [dpdk-dev] [PATCH v5 1/5] mbuf: introduce routine to get private mbuf pool flags
Date: Tue, 21 Jan 2020 09:14:17 +0100	[thread overview]
Message-ID: <20200121081417.GO14387@glumotte.dev.6wind.com> (raw)
In-Reply-To: <AM4PR05MB3265F7011B7DDE822FB7E3A8D20D0@AM4PR05MB3265.eurprd05.prod.outlook.com>

On Tue, Jan 21, 2020 at 08:00:17AM +0000, Slava Ovsiienko wrote:
> > -----Original Message-----
> > From: Stephen Hemminger <stephen@networkplumber.org>
> > Sent: Monday, January 20, 2020 22:44
> > To: Slava Ovsiienko <viacheslavo@mellanox.com>
> > Cc: dev@dpdk.org; Matan Azrad <matan@mellanox.com>; Raslan Darawsheh
> > <rasland@mellanox.com>; Ori Kam <orika@mellanox.com>; Shahaf Shuler
> > <shahafs@mellanox.com>; olivier.matz@6wind.com; thomas@mellanox.net
> > Subject: Re: [PATCH v5 1/5] mbuf: introduce routine to get private mbuf pool
> > flags
> > 
> > On Mon, 20 Jan 2020 17:23:19 +0000
> > Viacheslav Ovsiienko <viacheslavo@mellanox.com> wrote:
> > 
> > > The routine rte_pktmbuf_priv_flags is introduced to fetch the flags
> > > from the mbuf memory pool private structure in unified fashion.
> > >
> > > Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
> > > Acked-by: Olivier Matz <olivier.matz@6wind.com>
> > > ---
> > >  lib/librte_mbuf/rte_mbuf.h | 17 +++++++++++++++++
> > >  1 file changed, 17 insertions(+)
> > >
> > > diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
> > > index 2d4bda2..9b0691d 100644
> > > --- a/lib/librte_mbuf/rte_mbuf.h
> > > +++ b/lib/librte_mbuf/rte_mbuf.h
> > > @@ -306,6 +306,23 @@ struct rte_pktmbuf_pool_private {
> > >  	uint32_t flags; /**< reserved for future use. */  };
> > >
> > > +/**
> > > + * Return the flags from private data in an mempool structure.
> > > + *
> > > + * @param mp
> > > + *   A pointer to the mempool structure.
> > > + * @return
> > > + *   The flags from the private data structure.
> > > + */
> > > +static inline uint32_t
> > > +rte_pktmbuf_priv_flags(struct rte_mempool *mp) {
> > > +	struct rte_pktmbuf_pool_private *mbp_priv;
> > > +
> > > +	mbp_priv = (struct rte_pktmbuf_pool_private
> > *)rte_mempool_get_priv(mp);
> > > +	return mbp_priv->flags;
> > > +}
> > > +
> > >  #ifdef RTE_LIBRTE_MBUF_DEBUG
> > >
> > >  /**  check mbuf type in debug mode */
> > 
> > Looks fine, but a couple of minor suggestions.
> > 
> > 
> > Since this doesn't modify the mbuf, the arguments should be const.
> > Since rte_mempool_get_priv returns void *, the cast is unnecessary.
> 
> rte_mempool_get_priv() does not expect "const", so adding "const" is a bit problematic,
> and we should not change the rte_mempool_get_priv() prototype.
> Do you think we should take private structure pointer directly from the pool
> structure instead of calling rte_mempool_get_priv() ?

I'm not sure it would work. The problem is that to get the priv,
we do pool_ptr + offset. So if we want to remove the const, we'll
have to do a cast to "unconst". Not sure it is worth doing it.

Thanks
Olivier

  reply	other threads:[~2020-01-21  8:14 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-18  9:50 [dpdk-dev] [RFC v20.20] mbuf: introduce pktmbuf pool with pinned external buffers Shahaf Shuler
2019-11-18 16:09 ` Stephen Hemminger
2020-01-10 17:56 ` [dpdk-dev] [PATCH 0/4] " Viacheslav Ovsiienko
2020-01-10 17:56   ` [dpdk-dev] [PATCH 1/4] mbuf: detach mbuf with pinned external buffer Viacheslav Ovsiienko
2020-01-10 18:23     ` Stephen Hemminger
2020-01-13 17:07       ` Slava Ovsiienko
2020-01-14  7:19       ` Slava Ovsiienko
2020-01-10 17:57   ` [dpdk-dev] [PATCH 2/4] mbuf: create packet pool with external memory buffers Viacheslav Ovsiienko
2020-01-10 17:57   ` [dpdk-dev] [PATCH 3/4] app/testpmd: add mempool with external data buffers Viacheslav Ovsiienko
2020-01-10 17:57   ` [dpdk-dev] [PATCH 4/4] net/mlx5: allow use allocated mbuf with external buffer Viacheslav Ovsiienko
2020-01-14  7:49 ` [dpdk-dev] [PATCH v2 0/4] mbuf: introduce pktmbuf pool with pinned external buffers Viacheslav Ovsiienko
2020-01-14  7:49   ` [dpdk-dev] [PATCH v2 1/4] mbuf: detach mbuf with pinned external buffer Viacheslav Ovsiienko
2020-01-14  7:49   ` [dpdk-dev] [PATCH v2 2/4] mbuf: create packet pool with external memory buffers Viacheslav Ovsiienko
2020-01-14  7:49   ` [dpdk-dev] [PATCH v2 3/4] app/testpmd: add mempool with external data buffers Viacheslav Ovsiienko
2020-01-14  7:49   ` [dpdk-dev] [PATCH v2 4/4] net/mlx5: allow use allocated mbuf with external buffer Viacheslav Ovsiienko
2020-01-14  9:15 ` [dpdk-dev] [PATCH v3 0/4] mbuf: detach mbuf with pinned " Viacheslav Ovsiienko
2020-01-14  9:15   ` [dpdk-dev] [PATCH v3 1/4] " Viacheslav Ovsiienko
2020-01-14 15:27     ` Olivier Matz
2020-01-15 12:52       ` Slava Ovsiienko
2020-01-14 15:50     ` Stephen Hemminger
2020-01-14  9:15   ` [dpdk-dev] [PATCH v3 2/4] mbuf: create packet pool with external memory buffers Viacheslav Ovsiienko
2020-01-14 16:04     ` Olivier Matz
2020-01-15 18:13       ` Slava Ovsiienko
2020-01-14  9:15   ` [dpdk-dev] [PATCH v3 3/4] app/testpmd: add mempool with external data buffers Viacheslav Ovsiienko
2020-01-14  9:15   ` [dpdk-dev] [PATCH v3 4/4] net/mlx5: allow use allocated mbuf with external buffer Viacheslav Ovsiienko
2020-01-16 13:04 ` [dpdk-dev] [PATCH v4 0/5] mbuf: detach mbuf with pinned " Viacheslav Ovsiienko
2020-01-16 13:04   ` [dpdk-dev] [PATCH v4 1/5] mbuf: introduce routine to get private mbuf pool flags Viacheslav Ovsiienko
2020-01-20 12:16     ` Olivier Matz
2020-01-16 13:04   ` [dpdk-dev] [PATCH v4 2/5] mbuf: detach mbuf with pinned external buffer Viacheslav Ovsiienko
2020-01-20 13:56     ` Olivier Matz
2020-01-20 15:41       ` Slava Ovsiienko
2020-01-20 16:17         ` Olivier Matz
2020-01-16 13:04   ` [dpdk-dev] [PATCH v4 3/5] mbuf: create packet pool with external memory buffers Viacheslav Ovsiienko
2020-01-20 13:59     ` Olivier Matz
2020-01-20 17:33       ` Slava Ovsiienko
2020-01-16 13:04   ` [dpdk-dev] [PATCH v4 4/5] app/testpmd: add mempool with external data buffers Viacheslav Ovsiienko
2020-01-20 14:11     ` Olivier Matz
2020-01-16 13:04   ` [dpdk-dev] [PATCH v4 5/5] net/mlx5: allow use allocated mbuf with external buffer Viacheslav Ovsiienko
2020-01-20 17:23 ` [dpdk-dev] [PATCH v5 0/5] mbuf: detach mbuf with pinned " Viacheslav Ovsiienko
2020-01-20 17:23   ` [dpdk-dev] [PATCH v5 1/5] mbuf: introduce routine to get private mbuf pool flags Viacheslav Ovsiienko
2020-01-20 20:43     ` Stephen Hemminger
2020-01-20 22:52       ` Thomas Monjalon
2020-01-21  6:48       ` Slava Ovsiienko
2020-01-21  8:00       ` Slava Ovsiienko
2020-01-21  8:14         ` Olivier Matz [this message]
2020-01-21  8:23           ` Slava Ovsiienko
2020-01-21  9:13             ` Slava Ovsiienko
2020-01-21 14:01               ` Olivier Matz
2020-01-21 16:21                 ` Stephen Hemminger
2020-01-20 17:23   ` [dpdk-dev] [PATCH v5 2/5] mbuf: detach mbuf with pinned external buffer Viacheslav Ovsiienko
2020-01-20 17:40     ` Olivier Matz
2020-01-20 17:23   ` [dpdk-dev] [PATCH v5 3/5] mbuf: create packet pool with external memory buffers Viacheslav Ovsiienko
2020-01-20 17:46     ` Olivier Matz
2020-01-20 17:23   ` [dpdk-dev] [PATCH v5 4/5] app/testpmd: add mempool with external data buffers Viacheslav Ovsiienko
2020-01-20 17:23   ` [dpdk-dev] [PATCH v5 5/5] net/mlx5: allow use allocated mbuf with external buffer Viacheslav Ovsiienko
2020-01-20 17:30   ` [dpdk-dev] [PATCH v5 0/5] mbuf: detach mbuf with pinned " Slava Ovsiienko
2020-01-20 17:41     ` Olivier Matz
2020-01-20 19:16 ` [dpdk-dev] [PATCH v6 " Viacheslav Ovsiienko
2020-01-20 19:16   ` [dpdk-dev] [PATCH v6 1/5] mbuf: introduce routine to get private mbuf pool flags Viacheslav Ovsiienko
2020-01-20 19:16   ` [dpdk-dev] [PATCH v6 2/5] mbuf: detach mbuf with pinned external buffer Viacheslav Ovsiienko
2023-12-06 10:55     ` [dpdk-dev] [PATCH v6 2/5] mbuf: detach mbuf with pinned externalbuffer Morten Brørup
2020-01-20 19:16   ` [dpdk-dev] [PATCH v6 3/5] mbuf: create packet pool with external memory buffers Viacheslav Ovsiienko
2020-01-20 20:48     ` Stephen Hemminger
2020-01-21  7:04       ` Slava Ovsiienko
2020-01-20 19:16   ` [dpdk-dev] [PATCH v6 4/5] app/testpmd: add mempool with external data buffers Viacheslav Ovsiienko
2020-01-20 19:16   ` [dpdk-dev] [PATCH v6 5/5] net/mlx5: allow use allocated mbuf with external buffer Viacheslav Ovsiienko
2020-01-20 22:55   ` [dpdk-dev] [PATCH v6 0/5] mbuf: detach mbuf with pinned " Thomas Monjalon
2020-01-22  8:50 ` [dpdk-dev] [PATCH] mbuf: fix pinned memory free routine style issue Viacheslav Ovsiienko
2020-02-06  9:46   ` Olivier Matz
2020-02-06 14:26     ` Thomas Monjalon
2020-01-24 20:25 ` [dpdk-dev] [PATCH] app/test: add test for mbuf with pinned external buffer Viacheslav Ovsiienko
2020-01-26 10:53   ` Slava Ovsiienko
2020-02-06  8:17   ` Olivier Matz
2020-02-06  8:24     ` Slava Ovsiienko
2020-02-06  9:51       ` Slava Ovsiienko
2020-02-06  9:49   ` [dpdk-dev] [PATCH v2] " Viacheslav Ovsiienko
2020-02-06 14:43     ` Thomas Monjalon

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=20200121081417.GO14387@glumotte.dev.6wind.com \
    --to=olivier.matz@6wind.com \
    --cc=dev@dpdk.org \
    --cc=matan@mellanox.com \
    --cc=orika@mellanox.com \
    --cc=rasland@mellanox.com \
    --cc=shahafs@mellanox.com \
    --cc=stephen@networkplumber.org \
    --cc=thomas@mellanox.net \
    --cc=viacheslavo@mellanox.com \
    /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).