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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <1592497686-433697-2-git-send-email-matan@mellanox.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v1 1/4] vhost: support host notifier queue configuration X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 6/18/20 6:28 PM, Matan Azrad wrote: > As an arrangement to per queue operations in the vDPA device it is > needed to change the next experimental API: > > The API ``rte_vhost_host_notifier_ctrl`` was changed to be per queue > instead of per device. > > A `qid` parameter was added to the API arguments list. > > Setting the parameter to the value VHOST_QUEUE_ALL will configure the > host notifier to all the device queues as done before this patch. > > Signed-off-by: Matan Azrad > --- > doc/guides/rel_notes/release_20_08.rst | 2 ++ > drivers/vdpa/ifc/ifcvf_vdpa.c | 6 +++--- > drivers/vdpa/mlx5/mlx5_vdpa.c | 5 +++-- > lib/librte_vhost/rte_vdpa.h | 8 ++++++-- > lib/librte_vhost/rte_vhost.h | 2 ++ > lib/librte_vhost/vhost.h | 3 --- > lib/librte_vhost/vhost_user.c | 18 ++++++++++++++---- > 7 files changed, 30 insertions(+), 14 deletions(-) > > diff --git a/doc/guides/rel_notes/release_20_08.rst b/doc/guides/rel_notes/release_20_08.rst > index ba16d3b..9732959 100644 > --- a/doc/guides/rel_notes/release_20_08.rst > +++ b/doc/guides/rel_notes/release_20_08.rst > @@ -111,6 +111,8 @@ API Changes > Also, make sure to start the actual text at the margin. > ========================================================= > > +* vhost: The API of ``rte_vhost_host_notifier_ctrl`` was changed to be per > + queue and not per device, a qid parameter was added to the arguments list. > > ABI Changes > ----------- > diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c > index ec97178..336837a 100644 > --- a/drivers/vdpa/ifc/ifcvf_vdpa.c > +++ b/drivers/vdpa/ifc/ifcvf_vdpa.c > @@ -839,7 +839,7 @@ struct internal_list { > vdpa_ifcvf_stop(internal); > vdpa_disable_vfio_intr(internal); > > - ret = rte_vhost_host_notifier_ctrl(vid, false); > + ret = rte_vhost_host_notifier_ctrl(vid, VHOST_QUEUE_ALL, false); > if (ret && ret != -ENOTSUP) > goto error; > > @@ -858,7 +858,7 @@ struct internal_list { > if (ret) > goto stop_vf; > > - rte_vhost_host_notifier_ctrl(vid, true); > + rte_vhost_host_notifier_ctrl(vid, VHOST_QUEUE_ALL, true); > > internal->sw_fallback_running = true; > > @@ -893,7 +893,7 @@ struct internal_list { > rte_atomic32_set(&internal->dev_attached, 1); > update_datapath(internal); > > - if (rte_vhost_host_notifier_ctrl(vid, true) != 0) > + if (rte_vhost_host_notifier_ctrl(vid, VHOST_QUEUE_ALL, true) != 0) > DRV_LOG(NOTICE, "vDPA (%d): software relay is used.", did); > > return 0; > diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.c b/drivers/vdpa/mlx5/mlx5_vdpa.c > index 9e758b6..8ea1300 100644 > --- a/drivers/vdpa/mlx5/mlx5_vdpa.c > +++ b/drivers/vdpa/mlx5/mlx5_vdpa.c > @@ -147,7 +147,8 @@ > int ret; > > if (priv->direct_notifier) { > - ret = rte_vhost_host_notifier_ctrl(priv->vid, false); > + ret = rte_vhost_host_notifier_ctrl(priv->vid, VHOST_QUEUE_ALL, > + false); > if (ret != 0) { > DRV_LOG(INFO, "Direct HW notifier FD cannot be " > "destroyed for device %d: %d.", priv->vid, ret); > @@ -155,7 +156,7 @@ > } > priv->direct_notifier = 0; > } > - ret = rte_vhost_host_notifier_ctrl(priv->vid, true); > + ret = rte_vhost_host_notifier_ctrl(priv->vid, VHOST_QUEUE_ALL, true); > if (ret != 0) > DRV_LOG(INFO, "Direct HW notifier FD cannot be configured for" > " device %d: %d.", priv->vid, ret); > diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h > index ecb3d91..2db536c 100644 > --- a/lib/librte_vhost/rte_vdpa.h > +++ b/lib/librte_vhost/rte_vdpa.h > @@ -202,22 +202,26 @@ struct rte_vdpa_device * > int > rte_vdpa_get_device_num(void); > > +#define VHOST_QUEUE_ALL VHOST_MAX_VRING > + > /** > * @warning > * @b EXPERIMENTAL: this API may change without prior notice > * > - * Enable/Disable host notifier mapping for a vdpa port. > + * Enable/Disable host notifier mapping for a vdpa queue. > * > * @param vid > * vhost device id > * @param enable > * true for host notifier map, false for host notifier unmap > + * @param qid > + * vhost queue id, VHOST_QUEUE_ALL to configure all the device queues I would prefer two APIs that passing a special ID that means all queues: rte_vhost_host_notifier_ctrl(int vid, uint16_t qid, bool enable); rte_vhost_host_notifier_ctrl_all(int vid, bool enable); I think it is clearer for the user of the API. Or if you think an extra API is overkill, just let the driver loop on all the queues. > * @return > * 0 on success, -1 on failure > */ > __rte_experimental > int > -rte_vhost_host_notifier_ctrl(int vid, bool enable); > +rte_vhost_host_notifier_ctrl(int vid, uint16_t qid, bool enable); > > /**