From: Jerin Jacob <jerin.jacob@caviumnetworks.com>
To: Gage Eads <gage.eads@intel.com>
Cc: dev@dpdk.org, bruce.richardson@intel.com, hemant.agrawal@nxp.com,
harry.van.haaren@intel.com, nipun.gupta@nxp.com
Subject: Re: [dpdk-dev] [PATCH v6] eventdev: add errno-style return values
Date: Sat, 25 Mar 2017 10:41:33 +0530 [thread overview]
Message-ID: <20170325051131.duy4o53gqbjktc75@localhost.localdomain> (raw)
In-Reply-To: <20170324023806.pt3zwazljxdjb2zz@localhost.localdomain>
On Fri, Mar 24, 2017 at 08:08:06AM +0530, Jerin Jacob wrote:
> On Thu, Mar 23, 2017 at 05:30:20PM -0500, Gage Eads wrote:
> > From: "Eads, Gage" <gage.eads@intel.com>
> >
> > This commit adds rte_errno return values to rte_event_enqueue_burst() and
> > rte_event_dequeue_burst().
> >
> > These return values allows user software to differentiate between an
> > invalid argument (such as an invalid queue_id or sched_type in an enqueued
> > event) and backpressure from the event device.
> >
> > The port and device ID checks are placed in RTE_LIBRTE_EVENTDEV_DEBUG
> > header guards to avoid the performance hit in non-debug execution.
> >
> > Signed-off-by: Gage Eads <gage.eads@intel.com>
>
> Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Applied to dpdk-next-eventdev/master. Thanks.
>
> > ---
> > Changes for v2:
> > - Remove rte_errno initialization
> > Changes for v3:
> > - Fix checkpatch and check-git-log.sh errors
> > Changes for v4:
> > - v3 was incorrectly based on v1, v4 is instead based on v2's changes
> > Changes for v5:
> > - Clarify -ENOSPC description and fix compilation errors
> > Changes for v6:
> > - Fixed html doc rendering of bullet points for errno values
> >
> > lib/librte_eventdev/rte_eventdev.h | 37 ++++++++++++++++++++++++++++++++++---
> > 1 file changed, 34 insertions(+), 3 deletions(-)
> >
> > diff --git a/lib/librte_eventdev/rte_eventdev.h b/lib/librte_eventdev/rte_eventdev.h
> > index 5ce2f33..9971937 100644
> > --- a/lib/librte_eventdev/rte_eventdev.h
> > +++ b/lib/librte_eventdev/rte_eventdev.h
> > @@ -245,6 +245,7 @@ extern "C" {
> >
> > #include <rte_common.h>
> > #include <rte_memory.h>
> > +#include <rte_errno.h>
> >
> > struct rte_mbuf; /* we just use mbuf pointers; no need to include rte_mbuf.h */
> >
> > @@ -1119,9 +1120,15 @@ rte_event_schedule(uint8_t dev_id)
> > * The number of event objects actually enqueued on the event device. The
> > * return value can be less than the value of the *nb_events* parameter when
> > * the event devices queue is full or if invalid parameters are specified in a
> > - * *rte_event*. If return value is less than *nb_events*, the remaining events
> > - * at the end of ev[] are not consumed,and the caller has to take care of them
> > - *
> > + * *rte_event*. If the return value is less than *nb_events*, the remaining
> > + * events at the end of ev[] are not consumed and the caller has to take care
> > + * of them, and rte_errno is set accordingly. Possible errno values include:
> > + * - -EINVAL The port ID is invalid, device ID is invalid, an event's queue
> > + * ID is invalid, or an event's sched type doesn't match the
> > + * capabilities of the destination queue.
> > + * - -ENOSPC The event port was backpressured and unable to enqueue
> > + * one or more events. This error code is only applicable to
> > + * closed systems.
> > * @see rte_event_port_enqueue_depth()
> > */
> > static inline uint16_t
> > @@ -1130,6 +1137,18 @@ rte_event_enqueue_burst(uint8_t dev_id, uint8_t port_id,
> > {
> > struct rte_eventdev *dev = &rte_eventdevs[dev_id];
> >
> > +#ifdef RTE_LIBRTE_EVENTDEV_DEBUG
> > + if (dev_id >= RTE_EVENT_MAX_DEVS || !rte_eventdevs[dev_id].attached) {
> > + rte_errno = -EINVAL;
> > + return 0;
> > + }
> > +
> > + if (port_id >= dev->data->nb_ports) {
> > + rte_errno = -EINVAL;
> > + return 0;
> > + }
> > +#endif
> > +
> > /*
> > * Allow zero cost non burst mode routine invocation if application
> > * requests nb_events as const one
> > @@ -1240,6 +1259,18 @@ rte_event_dequeue_burst(uint8_t dev_id, uint8_t port_id, struct rte_event ev[],
> > {
> > struct rte_eventdev *dev = &rte_eventdevs[dev_id];
> >
> > +#ifdef RTE_LIBRTE_EVENTDEV_DEBUG
> > + if (dev_id >= RTE_EVENT_MAX_DEVS || !rte_eventdevs[dev_id].attached) {
> > + rte_errno = -EINVAL;
> > + return 0;
> > + }
> > +
> > + if (port_id >= dev->data->nb_ports) {
> > + rte_errno = -EINVAL;
> > + return 0;
> > + }
> > +#endif
> > +
> > /*
> > * Allow zero cost non burst mode routine invocation if application
> > * requests nb_events as const one
> > --
> > 2.7.4
> >
prev parent reply other threads:[~2017-03-25 5:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-10 21:02 [dpdk-dev] [PATCH] eventdev: Add rte_errno return values to the enqueue and dequeue functions Gage Eads
2017-02-13 10:38 ` Bruce Richardson
2017-02-13 11:48 ` Jerin Jacob
2017-02-13 12:08 ` Bruce Richardson
2017-02-13 16:05 ` Eads, Gage
2017-02-14 4:10 ` Jerin Jacob
2017-02-15 0:14 ` Eads, Gage
2017-02-15 17:09 ` [dpdk-dev] [PATCH v2] " Gage Eads
2017-03-16 10:28 ` Jerin Jacob
2017-03-16 20:12 ` [dpdk-dev] [PATCH v3] eventdev: add errno-style return values Gage Eads
2017-03-17 3:10 ` Jerin Jacob
2017-03-17 14:34 ` Eads, Gage
2017-03-17 14:51 ` [dpdk-dev] [PATCH v4] " Gage Eads
2017-03-21 11:06 ` Jerin Jacob
2017-03-21 20:38 ` Eads, Gage
2017-03-22 6:53 ` Jerin Jacob
2017-03-22 14:58 ` [dpdk-dev] [PATCH v5] " Gage Eads
2017-03-22 17:17 ` Jerin Jacob
2017-03-23 22:32 ` Eads, Gage
2017-03-23 22:30 ` [dpdk-dev] [PATCH v6] " Gage Eads
2017-03-24 2:38 ` Jerin Jacob
2017-03-25 5:11 ` Jerin Jacob [this message]
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=20170325051131.duy4o53gqbjktc75@localhost.localdomain \
--to=jerin.jacob@caviumnetworks.com \
--cc=bruce.richardson@intel.com \
--cc=dev@dpdk.org \
--cc=gage.eads@intel.com \
--cc=harry.van.haaren@intel.com \
--cc=hemant.agrawal@nxp.com \
--cc=nipun.gupta@nxp.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).