Free previously allocated memzone for HW rings
Signed-off-by: Renata Saiakhova <renata.saiakh...@ekinops.com>
---
lib/librte_ethdev/rte_ethdev.c | 30 ++++++++++++++++++++++--
lib/librte_ethdev/rte_ethdev_driver.h | 19 +++++++++++++++
lib/librte_ethdev/rte_ethdev_version.map | 1 +
3 files changed, 48 insertions(+), 2 deletions(-)
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 72aed59a5..7200ef48c 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_experimental
+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);
+
+ return rc;
+}
+
+#undef ETH_DMA_MZONE_NAME
+
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..f32d55720 100644
--- a/lib/librte_ethdev/rte_ethdev_driver.h
+++ b/lib/librte_ethdev/rte_ethdev_driver.h
@@ -180,6 +180,25 @@ 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.
+ */
+int __rte_experimental
+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.
diff --git a/lib/librte_ethdev/rte_ethdev_version.map
b/lib/librte_ethdev/rte_ethdev_version.map
index 715505604..139a81302 100644
--- a/lib/librte_ethdev/rte_ethdev_version.map
+++ b/lib/librte_ethdev/rte_ethdev_version.map
@@ -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;
};
--
2.17.2
