[v4,1/4] librte_ethdev: Introduce a function to release HW rings
Checks
Commit Message
Free previously allocated memzone for HW rings
Signed-off-by: Renata Saiakhova <Renata.Saiakhova@ekinops.com>
---
lib/librte_ethdev/rte_ethdev.c | 30 ++++++++++++++++++++++--
lib/librte_ethdev/rte_ethdev_driver.h | 20 ++++++++++++++++
lib/librte_ethdev/rte_ethdev_version.map | 1 +
3 files changed, 49 insertions(+), 2 deletions(-)
Comments
On 6/22/2020 10:54 AM, Renata Saiakhova wrote:
> Free previously allocated memzone for HW rings
>
> Signed-off-by: Renata Saiakhova <Renata.Saiakhova@ekinops.com>
> ---
> lib/librte_ethdev/rte_ethdev.c | 30 ++++++++++++++++++++++--
> lib/librte_ethdev/rte_ethdev_driver.h | 20 ++++++++++++++++
> lib/librte_ethdev/rte_ethdev_version.map | 1 +
> 3 files changed, 49 insertions(+), 2 deletions(-)
>
> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
> index 72aed59a5..ec1da2006 100644
> --- a/lib/librte_ethdev/rte_ethdev.c
> +++ b/lib/librte_ethdev/rte_ethdev.c
> @@ -4181,6 +4181,10 @@ rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id)
> return fd;
> }
>
> +#define ETH_DMA_MZONE_NAME(_name, _port_id, _queue_id, _ring_name) \
> + snprintf(_name, sizeof(_name), "eth_p%d_q%d_%s", \
> + _port_id, _queue_id, _ring_name)
> +
> const struct rte_memzone *
> rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
> uint16_t queue_id, size_t size, unsigned align,
> @@ -4190,8 +4194,7 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
> const struct rte_memzone *mz;
> int rc;
>
> - rc = snprintf(z_name, sizeof(z_name), "eth_p%d_q%d_%s",
> - dev->data->port_id, queue_id, ring_name);
> + rc = ETH_DMA_MZONE_NAME(z_name, dev->data->port_id, queue_id, ring_name);
> if (rc >= RTE_MEMZONE_NAMESIZE) {
> RTE_ETHDEV_LOG(ERR, "ring name too long\n");
> rte_errno = ENAMETOOLONG;
> @@ -4206,6 +4209,29 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
> RTE_MEMZONE_IOVA_CONTIG, align);
> }
>
> +int
> +rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name,
> + uint16_t queue_id)
> +{
> + char z_name[RTE_MEMZONE_NAMESIZE];
> + const struct rte_memzone *mz;
> + int rc = 0;
> +
> + rc = ETH_DMA_MZONE_NAME(z_name, dev->data->port_id, queue_id, ring_name);
> + if (rc >= RTE_MEMZONE_NAMESIZE) {
> + RTE_ETHDEV_LOG(ERR, "ring name too long\n");
> + return -ENAMETOOLONG;
> + }
> +
> + mz = rte_memzone_lookup(z_name);
> + if (mz)
> + rc = rte_memzone_free(mz);
> + else
> + rc = -EINVAL;
> +
> + return rc;
> +}
> +
> int
> rte_eth_dev_create(struct rte_device *device, const char *name,
> size_t priv_data_size,
> diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev/rte_ethdev_driver.h
> index 99d4cd6cd..462e765d1 100644
> --- a/lib/librte_ethdev/rte_ethdev_driver.h
> +++ b/lib/librte_ethdev/rte_ethdev_driver.h
> @@ -180,6 +180,26 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *eth_dev, const char *name,
> uint16_t queue_id, size_t size,
> unsigned align, int socket_id);
>
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Free previously allocated memzone for HW rings.
> + *
> + * @param eth_dev
> + * The *eth_dev* pointer is the address of the *rte_eth_dev* structure
> + * @param name
> + * The name of the memory zone
> + * @param queue_id
> + * The index of the queue to add to name
> + * @return
> + * Negative errno value on error, 0 on success.
> + */
> +__rte_experimental
> +int
> +rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name,
> + uint16_t queue_id);
> +
Hi Renata,
This API is not for applications, only for drivers, right?
We recently (last release ?) introduced 'internal' (__rte_internal) attribute,
we can use '__rte_internal' instead of '__rte_experimental' if the API is not
for applications. This requires adding 'INTERNAL' block in .map file (sample
'lib/librte_eal/rte_eal_version.map')
Also there are a few contribution conventions related issues which can be fixed
while merging but please check them if you will be doing new version:
subsystem is only libname without prefix: 'ethdev'
Commit title description starts with lowercase: 'introduce'.
sample => "ethdev: add function to release HW rings"
Thanks,
ferruh
On 6/22/2020 10:54 AM, Renata Saiakhova wrote:
> Free previously allocated memzone for HW rings
>
> Signed-off-by: Renata Saiakhova <Renata.Saiakhova@ekinops.com>
<...>
> +/**
> + * @warning
> + * @b EXPERIMENTAL: this API may change without prior notice.
> + *
> + * Free previously allocated memzone for HW rings.
> + *
> + * @param eth_dev
> + * The *eth_dev* pointer is the address of the *rte_eth_dev* structure
> + * @param name
> + * The name of the memory zone
> + * @param queue_id
> + * The index of the queue to add to name
The param names for doxygen and actual param names are not same, causing doxygen
warning.
"@param eth_dev" -> 'dev'
"@param name" -> 'ring_name'
> + * @return
> + * Negative errno value on error, 0 on success.
> + */
> +__rte_experimental
> +int
> +rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name,
> + uint16_t queue_id);
> +
Hi Ferruh,
I added an INTERNAL block in .map file, that gives me an error:
Build targets in project: 806
Found ninja-1.8.2 at /usr/bin/ninja
[7/627] Linking target lib/librte_ethdev.so.20.0.3.
FAILED: lib/librte_ethdev.so.20.0.3
ccache cc -o lib/librte_ethdev.so.20.0.3 'lib/lib@@rte_ethdev@sta/librte_ethdev_ethdev_private.c.o' 'lib/lib@@rte_ethdev@sta/librte_ethdev_ethdev_profile.c.o' 'lib/lib@@rte_ethdev@sta/librte_ethdev_ethdev_trace_points.c.o' 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_class_eth.c.o' 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_ethdev.c.o' 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_flow.c.o' 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_mtr.c.o' 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_tm.c.o' -Wl,--no-undefined -Wl,--as-needed -Wl,-O1 -shared -fPIC -Wl,--start-group -Wl,-soname,librte_ethdev.so.20.0 -Wl,--no-as-needed -pthread -lm -ldl -lnuma lib/librte_eal.so.20.0.3 lib/librte_kvargs.so.20.0.3 lib/librte_telemetry.so.0.200.3 lib/librte_net.so.20.0.3 lib/librte_mbuf.so.20.0.3 lib/librte_mempool.so.20.0.3 lib/librte_ring.so.20.0.3 lib/librte_meter.so.20.0.3 -Wl,--end-group -Wl,--version-script=/home/renata/work/dpdk/lib/librte_ethdev/rte_ethdev_version.map '-Wl,-rpath,$ORIGIN/' -Wl,-rpath-link,/home/renata/work/dpdk/build/lib
/usr/bin/ld:/home/renata/work/dpdk/lib/librte_ethdev/rte_ethdev_version.map:0: syntax error in VERSION script
collect2: error: ld returned 1 exit status
What could be an issue, is that I need to correct the version somewhere?
KR,
Renata
On 6/23/2020 10:11 AM, Renata Saiakhova wrote:
> Hi Ferruh,
>
> I added an INTERNAL block in .map file, that gives me an error:
>
> Build targets in project: 806
> Found ninja-1.8.2 at /usr/bin/ninja
> [7/627] Linking target lib/librte_ethdev.so.20.0.3.
> FAILED: lib/librte_ethdev.so.20.0.3
> ccache cc -o lib/librte_ethdev.so.20.0.3
> 'lib/lib@@rte_ethdev@sta/librte_ethdev_ethdev_private.c.o'
> 'lib/lib@@rte_ethdev@sta/librte_ethdev_ethdev_profile.c.o'
> 'lib/lib@@rte_ethdev@sta/librte_ethdev_ethdev_trace_points.c.o'
> 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_class_eth.c.o'
> 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_ethdev.c.o'
> 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_flow.c.o'
> 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_mtr.c.o'
> 'lib/lib@@rte_ethdev@sta/librte_ethdev_rte_tm.c.o' -Wl,--no-undefined
> -Wl,--as-needed -Wl,-O1 -shared -fPIC -Wl,--start-group
> -Wl,-soname,librte_ethdev.so.20.0 -Wl,--no-as-needed -pthread -lm -ldl -lnuma
> lib/librte_eal.so.20.0.3 lib/librte_kvargs.so.20.0.3
> lib/librte_telemetry.so.0.200.3 lib/librte_net.so.20.0.3
> lib/librte_mbuf.so.20.0.3 lib/librte_mempool.so.20.0.3 lib/librte_ring.so.20.0.3
> lib/librte_meter.so.20.0.3 -Wl,--end-group
> -Wl,--version-script=/home/renata/work/dpdk/lib/librte_ethdev/rte_ethdev_version.map
> '-Wl,-rpath,$ORIGIN/' -Wl,-rpath-link,/home/renata/work/dpdk/build/lib
> /usr/bin/ld:/home/renata/work/dpdk/lib/librte_ethdev/rte_ethdev_version.map:0:
> syntax error in VERSION script
> collect2: error: ld returned 1 exit status
>
> What could be an issue, is that I need to correct the version somewhere?
Hi Renata,
The log says "syntax error in VERSION script", can be related to it. I did
following update on top of your patches and it seems worked for me:
diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev
/rte_ethdev_driver.h
index 462e765d1..ca16f1bcc 100644
--- a/lib/librte_ethdev/rte_ethdev_driver.h
+++ b/lib/librte_ethdev/rte_ethdev_driver.h
@@ -181,9 +181,6 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *eth_dev,
const char *name,
unsigned align, int socket_id);
/**
- * @warning
- * @b EXPERIMENTAL: this API may change without prior notice.
- *
* Free previously allocated memzone for HW rings.
*
* @param eth_dev
@@ -195,7 +192,7 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *eth_dev,
const char *name,
* @return
* Negative errno value on error, 0 on success.
*/
-__rte_experimental
+__rte_internal
int
rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name,
uint16_t queue_id);
diff --git a/lib/librte_ethdev/rte_ethdev_version.map b/lib/librte_ethdev
/rte_ethdev_version.map
index 139a81302..1212a17d3 100644
--- a/lib/librte_ethdev/rte_ethdev_version.map
+++ b/lib/librte_ethdev/rte_ethdev_version.map
@@ -241,5 +241,10 @@ EXPERIMENTAL {
__rte_ethdev_trace_rx_burst;
__rte_ethdev_trace_tx_burst;
rte_flow_get_aged_flows;
+};
+
+INTERNAL {
+ global:
+
rte_eth_dma_zone_free;
};
>
> --------------------------------------------------------------------------------
> *From:* Ferruh Yigit <ferruh.yigit@intel.com>
> *Sent:* Monday, June 22, 2020 7:09 PM
> *To:* Renata Saiakhova <renata.saiakhova@ekinops.com>; dev@dpdk.org <dev@dpdk.org>
> *Subject:* Re: [dpdk-dev] [PATCH v4 1/4] librte_ethdev: Introduce a function to
> release HW rings
>
> On 6/22/2020 10:54 AM, Renata Saiakhova wrote:
>> Free previously allocated memzone for HW rings
>>
>> Signed-off-by: Renata Saiakhova <Renata.Saiakhova@ekinops.com>
>> ---
>> lib/librte_ethdev/rte_ethdev.c | 30 ++++++++++++++++++++++--
>> lib/librte_ethdev/rte_ethdev_driver.h | 20 ++++++++++++++++
>> lib/librte_ethdev/rte_ethdev_version.map | 1 +
>> 3 files changed, 49 insertions(+), 2 deletions(-)
>>
>> diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
>> index 72aed59a5..ec1da2006 100644
>> --- a/lib/librte_ethdev/rte_ethdev.c
>> +++ b/lib/librte_ethdev/rte_ethdev.c
>> @@ -4181,6 +4181,10 @@ rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id)
>> return fd;
>> }
>>
>> +#define ETH_DMA_MZONE_NAME(_name, _port_id, _queue_id, _ring_name) \
>> + snprintf(_name, sizeof(_name), "eth_p%d_q%d_%s", \
>> + _port_id, _queue_id, _ring_name)
>> +
>> const struct rte_memzone *
>> rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
>> uint16_t queue_id, size_t size, unsigned align,
>> @@ -4190,8 +4194,7 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
>> const struct rte_memzone *mz;
>> int rc;
>>
>> - rc = snprintf(z_name, sizeof(z_name), "eth_p%d_q%d_%s",
>> - dev->data->port_id, queue_id, ring_name);
>> + rc = ETH_DMA_MZONE_NAME(z_name, dev->data->port_id, queue_id, ring_name);
>> if (rc >= RTE_MEMZONE_NAMESIZE) {
>> RTE_ETHDEV_LOG(ERR, "ring name too long\n");
>> rte_errno = ENAMETOOLONG;
>> @@ -4206,6 +4209,29 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
>> RTE_MEMZONE_IOVA_CONTIG, align);
>> }
>>
>> +int
>> +rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name,
>> + uint16_t queue_id)
>> +{
>> + char z_name[RTE_MEMZONE_NAMESIZE];
>> + const struct rte_memzone *mz;
>> + int rc = 0;
>> +
>> + rc = ETH_DMA_MZONE_NAME(z_name, dev->data->port_id, queue_id, ring_name);
>> + if (rc >= RTE_MEMZONE_NAMESIZE) {
>> + RTE_ETHDEV_LOG(ERR, "ring name too long\n");
>> + return -ENAMETOOLONG;
>> + }
>> +
>> + mz = rte_memzone_lookup(z_name);
>> + if (mz)
>> + rc = rte_memzone_free(mz);
>> + else
>> + rc = -EINVAL;
>> +
>> + return rc;
>> +}
>> +
>> int
>> rte_eth_dev_create(struct rte_device *device, const char *name,
>> size_t priv_data_size,
>> diff --git a/lib/librte_ethdev/rte_ethdev_driver.h b/lib/librte_ethdev/rte_ethdev_driver.h
>> index 99d4cd6cd..462e765d1 100644
>> --- a/lib/librte_ethdev/rte_ethdev_driver.h
>> +++ b/lib/librte_ethdev/rte_ethdev_driver.h
>> @@ -180,6 +180,26 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *eth_dev, const char *name,
>> uint16_t queue_id, size_t size,
>> unsigned align, int socket_id);
>>
>> +/**
>> + * @warning
>> + * @b EXPERIMENTAL: this API may change without prior notice.
>> + *
>> + * Free previously allocated memzone for HW rings.
>> + *
>> + * @param eth_dev
>> + * The *eth_dev* pointer is the address of the *rte_eth_dev* structure
>> + * @param name
>> + * The name of the memory zone
>> + * @param queue_id
>> + * The index of the queue to add to name
>> + * @return
>> + * Negative errno value on error, 0 on success.
>> + */
>> +__rte_experimental
>> +int
>> +rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name,
>> + uint16_t queue_id);
>> +
>
> Hi Renata,
>
> This API is not for applications, only for drivers, right?
> We recently (last release ?) introduced 'internal' (__rte_internal) attribute,
> we can use '__rte_internal' instead of '__rte_experimental' if the API is not
> for applications. This requires adding 'INTERNAL' block in .map file (sample
> 'lib/librte_eal/rte_eal_version.map')
>
>
> Also there are a few contribution conventions related issues which can be fixed
> while merging but please check them if you will be doing new version:
> subsystem is only libname without prefix: 'ethdev'
> Commit title description starts with lowercase: 'introduce'.
> sample => "ethdev: add function to release HW rings"
>
>
> Thanks,
> ferruh
@@ -4181,6 +4181,10 @@ rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id)
return fd;
}
+#define ETH_DMA_MZONE_NAME(_name, _port_id, _queue_id, _ring_name) \
+ snprintf(_name, sizeof(_name), "eth_p%d_q%d_%s", \
+ _port_id, _queue_id, _ring_name)
+
const struct rte_memzone *
rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
uint16_t queue_id, size_t size, unsigned align,
@@ -4190,8 +4194,7 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
const struct rte_memzone *mz;
int rc;
- rc = snprintf(z_name, sizeof(z_name), "eth_p%d_q%d_%s",
- dev->data->port_id, queue_id, ring_name);
+ rc = ETH_DMA_MZONE_NAME(z_name, dev->data->port_id, queue_id, ring_name);
if (rc >= RTE_MEMZONE_NAMESIZE) {
RTE_ETHDEV_LOG(ERR, "ring name too long\n");
rte_errno = ENAMETOOLONG;
@@ -4206,6 +4209,29 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
RTE_MEMZONE_IOVA_CONTIG, align);
}
+int
+rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name,
+ uint16_t queue_id)
+{
+ char z_name[RTE_MEMZONE_NAMESIZE];
+ const struct rte_memzone *mz;
+ int rc = 0;
+
+ rc = ETH_DMA_MZONE_NAME(z_name, dev->data->port_id, queue_id, ring_name);
+ if (rc >= RTE_MEMZONE_NAMESIZE) {
+ RTE_ETHDEV_LOG(ERR, "ring name too long\n");
+ return -ENAMETOOLONG;
+ }
+
+ mz = rte_memzone_lookup(z_name);
+ if (mz)
+ rc = rte_memzone_free(mz);
+ else
+ rc = -EINVAL;
+
+ return rc;
+}
+
int
rte_eth_dev_create(struct rte_device *device, const char *name,
size_t priv_data_size,
@@ -180,6 +180,26 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *eth_dev, const char *name,
uint16_t queue_id, size_t size,
unsigned align, int socket_id);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Free previously allocated memzone for HW rings.
+ *
+ * @param eth_dev
+ * The *eth_dev* pointer is the address of the *rte_eth_dev* structure
+ * @param name
+ * The name of the memory zone
+ * @param queue_id
+ * The index of the queue to add to name
+ * @return
+ * Negative errno value on error, 0 on success.
+ */
+__rte_experimental
+int
+rte_eth_dma_zone_free(const struct rte_eth_dev *dev, const char *ring_name,
+ uint16_t queue_id);
+
/**
* @internal
* Atomically set the link status for the specific device.
@@ -241,4 +241,5 @@ EXPERIMENTAL {
__rte_ethdev_trace_rx_burst;
__rte_ethdev_trace_tx_burst;
rte_flow_get_aged_flows;
+ rte_eth_dma_zone_free;
};