[dpdk-dev] af_packet: make the device detachable
Commit Message
Fix memory leak when detaching virtual device. Set dev_flags to
RTE_ETH_DEV_DETACHABLE and implement pmd_af_packet_drv.uninit method.
Copy device name to ethdev->data to make it compatibile with
rte_eth_dev_allocated().
Signed-off-by: Wojciech Zmuda <woz@semihalf.com>
---
drivers/net/af_packet/rte_eth_af_packet.c | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
Comments
Hi Wojciech,
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Wojciech Zmuda
> Sent: Tuesday, January 5, 2016 2:05 PM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH] af_packet: make the device detachable
>
> Fix memory leak when detaching virtual device. Set dev_flags to
> RTE_ETH_DEV_DETACHABLE and implement pmd_af_packet_drv.uninit
> method.
> Copy device name to ethdev->data to make it compatibile with
Typo, compatibile should be compatible.
> rte_eth_dev_allocated().
>
> Signed-off-by: Wojciech Zmuda <woz@semihalf.com>
> ---
> drivers/net/af_packet/rte_eth_af_packet.c | 29
> ++++++++++++++++++++++++++++-
> 1 file changed, 28 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/af_packet/rte_eth_af_packet.c
> b/drivers/net/af_packet/rte_eth_af_packet.c
> index 767f36b..7ef65ff 100644
> --- a/drivers/net/af_packet/rte_eth_af_packet.c
> +++ b/drivers/net/af_packet/rte_eth_af_packet.c
> @@ -667,11 +667,13 @@ rte_pmd_init_internals(const char *name,
> data->nb_tx_queues = (uint16_t)nb_queues;
> data->dev_link = pmd_link;
> data->mac_addrs = &(*internals)->eth_addr;
> + strncpy(data->name,
> + (*eth_dev)->data->name, strlen((*eth_dev)->data-
> >name));
>
> (*eth_dev)->data = data;
> (*eth_dev)->dev_ops = &ops;
> (*eth_dev)->driver = NULL;
> - (*eth_dev)->data->dev_flags = 0;
> + (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
> (*eth_dev)->data->drv_name = drivername;
> (*eth_dev)->data->kdrv = RTE_KDRV_NONE;
> (*eth_dev)->data->numa_node = numa_node; @@ -836,10 +838,35
> @@ exit:
> return ret;
> }
>
> +static int
> +rte_pmd_af_packet_devuninit(const char *name) {
> + struct rte_eth_dev *eth_dev = NULL;
> +
> + RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket
> %u\n",
> + rte_socket_id());
> +
> + if (name == NULL)
> + return -1;
> +
> + /* reserve an ethdev entry */
Above comment should be /* find the ethdev entry */
> + eth_dev = rte_eth_dev_allocated(name);
> + if (eth_dev == NULL)
> + return -1;
> +
In rte_pmd_init_internals() memory is allocated for rx and tx queues this should also be freed.
Line 606: rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
Line 620:tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
rte_free((*internals)->rx_queue[q].rd);
rte_free((*internals)->tx_queue[q].rd);
> + rte_free(eth_dev->data->dev_private);
> + rte_free(eth_dev->data);
> +
> + rte_eth_dev_release_port(eth_dev);
> +
> + return 0;
> +}
> +
> static struct rte_driver pmd_af_packet_drv = {
> .name = "eth_af_packet",
> .type = PMD_VDEV,
> .init = rte_pmd_af_packet_devinit,
> + .uninit = rte_pmd_af_packet_devuninit,
> };
>
> PMD_REGISTER_DRIVER(pmd_af_packet_drv);
> --
> 1.9.1
Hi Wojciech
<snip>
> > -----Original Message-----
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Wojciech Zmuda
> > Sent: Tuesday, January 5, 2016 2:05 PM
> > To: dev@dpdk.org
> > Subject: [dpdk-dev] [PATCH] af_packet: make the device detachable
> >
> > Fix memory leak when detaching virtual device. Set dev_flags to
> > RTE_ETH_DEV_DETACHABLE and implement pmd_af_packet_drv.uninit
> method.
> > Copy device name to ethdev->data to make it compatibile with
>
> Typo, compatibile should be compatible.
>
> > rte_eth_dev_allocated().
> >
> > Signed-off-by: Wojciech Zmuda <woz@semihalf.com>
> > ---
> > drivers/net/af_packet/rte_eth_af_packet.c | 29
> > ++++++++++++++++++++++++++++-
> > 1 file changed, 28 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/af_packet/rte_eth_af_packet.c
> > b/drivers/net/af_packet/rte_eth_af_packet.c
> > index 767f36b..7ef65ff 100644
> > --- a/drivers/net/af_packet/rte_eth_af_packet.c
> > +++ b/drivers/net/af_packet/rte_eth_af_packet.c
> > @@ -667,11 +667,13 @@ rte_pmd_init_internals(const char *name,
> > data->nb_tx_queues = (uint16_t)nb_queues;
> > data->dev_link = pmd_link;
> > data->mac_addrs = &(*internals)->eth_addr;
> > + strncpy(data->name,
> > + (*eth_dev)->data->name, strlen((*eth_dev)->data-
> > >name));
> >
> > (*eth_dev)->data = data;
> > (*eth_dev)->dev_ops = &ops;
> > (*eth_dev)->driver = NULL;
> > - (*eth_dev)->data->dev_flags = 0;
> > + (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
> > (*eth_dev)->data->drv_name = drivername;
> > (*eth_dev)->data->kdrv = RTE_KDRV_NONE;
> > (*eth_dev)->data->numa_node = numa_node; @@ -836,10 +838,35
> @@ exit:
> > return ret;
> > }
> >
> > +static int
> > +rte_pmd_af_packet_devuninit(const char *name) {
> > + struct rte_eth_dev *eth_dev = NULL;
> > +
> > + RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket
> > %u\n",
> > + rte_socket_id());
> > +
> > + if (name == NULL)
> > + return -1;
> > +
> > + /* reserve an ethdev entry */
>
> Above comment should be /* find the ethdev entry */
>
> > + eth_dev = rte_eth_dev_allocated(name);
> > + if (eth_dev == NULL)
> > + return -1;
> > +
>
> In rte_pmd_init_internals() memory is allocated for rx and tx queues this
> should also be freed.
>
> Line 606: rx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
> Line 620:tx_queue->rd = rte_zmalloc_socket(name, rdsize, 0, numa_node);
>
> rte_free((*internals)->rx_queue[q].rd);
> rte_free((*internals)->tx_queue[q].rd);
>
> > + rte_free(eth_dev->data->dev_private);
> > + rte_free(eth_dev->data);
> > +
> > + rte_eth_dev_release_port(eth_dev);
> > +
> > + return 0;
> > +}
> > +
> > static struct rte_driver pmd_af_packet_drv = {
> > .name = "eth_af_packet",
> > .type = PMD_VDEV,
> > .init = rte_pmd_af_packet_devinit,
> > + .uninit = rte_pmd_af_packet_devuninit,
> > };
> >
> > PMD_REGISTER_DRIVER(pmd_af_packet_drv);
> > --
> > 1.9.1
Forgot to mention that there should probably be and entry in the 2.3 release notes, new features section, for this.
Regards,
Bernard.
@@ -667,11 +667,13 @@ rte_pmd_init_internals(const char *name,
data->nb_tx_queues = (uint16_t)nb_queues;
data->dev_link = pmd_link;
data->mac_addrs = &(*internals)->eth_addr;
+ strncpy(data->name,
+ (*eth_dev)->data->name, strlen((*eth_dev)->data->name));
(*eth_dev)->data = data;
(*eth_dev)->dev_ops = &ops;
(*eth_dev)->driver = NULL;
- (*eth_dev)->data->dev_flags = 0;
+ (*eth_dev)->data->dev_flags = RTE_ETH_DEV_DETACHABLE;
(*eth_dev)->data->drv_name = drivername;
(*eth_dev)->data->kdrv = RTE_KDRV_NONE;
(*eth_dev)->data->numa_node = numa_node;
@@ -836,10 +838,35 @@ exit:
return ret;
}
+static int
+rte_pmd_af_packet_devuninit(const char *name)
+{
+ struct rte_eth_dev *eth_dev = NULL;
+
+ RTE_LOG(INFO, PMD, "Closing AF_PACKET ethdev on numa socket %u\n",
+ rte_socket_id());
+
+ if (name == NULL)
+ return -1;
+
+ /* reserve an ethdev entry */
+ eth_dev = rte_eth_dev_allocated(name);
+ if (eth_dev == NULL)
+ return -1;
+
+ rte_free(eth_dev->data->dev_private);
+ rte_free(eth_dev->data);
+
+ rte_eth_dev_release_port(eth_dev);
+
+ return 0;
+}
+
static struct rte_driver pmd_af_packet_drv = {
.name = "eth_af_packet",
.type = PMD_VDEV,
.init = rte_pmd_af_packet_devinit,
+ .uninit = rte_pmd_af_packet_devuninit,
};
PMD_REGISTER_DRIVER(pmd_af_packet_drv);