From: "Xueming(Steven) Li" <xuemingl@nvidia.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
Matan Azrad <matan@nvidia.com>,
Slava Ovsiienko <viacheslavo@nvidia.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, Asaf Penso <asafp@nvidia.com>
Subject: Re: [dpdk-dev] [v1] vdpa/mlx5: fix event channel setup
Date: Fri, 18 Sep 2020 11:14:22 +0000 [thread overview]
Message-ID: <CH2PR12MB4326AB6EEB4158AE5AAE3897A13F0@CH2PR12MB4326.namprd12.prod.outlook.com> (raw)
In-Reply-To: <0185104f-b420-3afb-0a86-0bcea3c9e6d5@redhat.com>
> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Friday, September 18, 2020 5:42 PM
> To: Xueming(Steven) Li <xuemingl@nvidia.com>; Matan Azrad
> <matan@nvidia.com>; Slava Ovsiienko <viacheslavo@nvidia.com>
> Cc: dev@dpdk.org; Asaf Penso <asafp@nvidia.com>
> Subject: Re: [dpdk-dev] [v1] vdpa/mlx5: fix event channel setup
>
>
>
> On 8/25/20 11:17 AM, Xueming Li wrote:
> > During vdap device setup, if some error happens, event channel release
>
> s/vdap/vDPA/
>
> > stuck at polling event channel.
> >
> > Event channel fd is set to nonblocking in cqe setup, so if any error
>
> non-blocking
>
> > happens before this function and after event channel created, the
> > pooling before releasing resources will stuck.
> >
> > This patch moves event channel to non-blocking mode right after
> > creation.
> >
> > Fixes: 8395927cdf ("vdpa/mlx5: prepare HW queues")
> > Cc: matan@nvidia.com
> >
> > Signed-off-by: Xueming Li <xuemingl@nvidia.com>
> > ---
> > drivers/vdpa/mlx5/mlx5_vdpa_event.c | 15 ++++++++-------
> > 1 file changed, 8 insertions(+), 7 deletions(-)
> >
> > diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_event.c
> > b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
> > index 5a2d4fb1ec..bda547ffe0 100644
> > --- a/drivers/vdpa/mlx5/mlx5_vdpa_event.c
> > +++ b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
> > @@ -51,6 +51,8 @@ mlx5_vdpa_event_qp_global_release(struct
> > mlx5_vdpa_priv *priv) static int
> > mlx5_vdpa_event_qp_global_prepare(struct mlx5_vdpa_priv *priv) {
> > + int flags, ret;
> > +
> > if (priv->eventc)
> > return 0;
> > if (mlx5_glue->devx_query_eqn(priv->ctx, 0, &priv->eqn)) { @@ -66,6
> > +68,12 @@ mlx5_vdpa_event_qp_global_prepare(struct mlx5_vdpa_priv
> *priv)
> > rte_errno);
> > goto error;
> > }
> > + flags = fcntl(priv->eventc->fd, F_GETFL);
> > + ret = fcntl(priv->eventc->fd, F_SETFL, flags | O_NONBLOCK);
> > + if (ret) {
> > + DRV_LOG(ERR, "Failed to change event channel FD.");
> > + goto error;
> > + }
> > priv->uar = mlx5_glue->devx_alloc_uar(priv->ctx, 0);
> > if (!priv->uar) {
> > rte_errno = errno;
> > @@ -376,7 +384,6 @@ mlx5_vdpa_interrupt_handler(void *cb_arg) int
> > mlx5_vdpa_cqe_event_setup(struct mlx5_vdpa_priv *priv) {
> > - int flags;
> > int ret;
> >
> > if (!priv->eventc)
> > @@ -393,12 +400,6 @@ mlx5_vdpa_cqe_event_setup(struct
> mlx5_vdpa_priv *priv)
> > return -1;
> > }
> > }
> > - flags = fcntl(priv->eventc->fd, F_GETFL);
> > - ret = fcntl(priv->eventc->fd, F_SETFL, flags | O_NONBLOCK);
> > - if (ret) {
> > - DRV_LOG(ERR, "Failed to change event channel FD.");
> > - goto error;
> > - }
> > priv->intr_handle.fd = priv->eventc->fd;
> > priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
> > if (rte_intr_callback_register(&priv->intr_handle,
> >
>
> Looks good to me, I'll fix the typos while applying.
>
Appreciate!
> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
>
> Thanks,
> Maxime
next prev parent reply other threads:[~2020-09-18 11:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-20 14:32 [dpdk-dev] [PATCH] " Xueming Li
2020-08-25 9:17 ` [dpdk-dev] [v1] " Xueming Li
2020-08-30 8:17 ` Matan Azrad
2020-09-18 9:41 ` Maxime Coquelin
2020-09-18 11:14 ` Xueming(Steven) Li [this message]
2020-09-18 12:28 ` Maxime Coquelin
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=CH2PR12MB4326AB6EEB4158AE5AAE3897A13F0@CH2PR12MB4326.namprd12.prod.outlook.com \
--to=xuemingl@nvidia.com \
--cc=asafp@nvidia.com \
--cc=dev@dpdk.org \
--cc=matan@nvidia.com \
--cc=maxime.coquelin@redhat.com \
--cc=viacheslavo@nvidia.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).