Free previously allocated memzone for HW rings
Signed-off-by: Renata Saiakhova <renata.saiakh...@ekinops.com>
---
lib/librte_ethdev/rte_ethdev.c | 23 +++++++++++++++++++++++
lib/librte_ethdev/rte_ethdev_driver.h | 14 ++++++++++++++
lib/librte_ethdev/rte_ethdev_version.map | 1 +
3 files changed, 38 insertions(+)
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 72aed59a5..c6d27e1aa 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -4206,6 +4206,29 @@ 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;
+
+ snprintf(z_name, sizeof(z_name), "eth_p%d_q%d_%s",
+ 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;
+ return NULL;
+ }
+
+ mz = rte_memzone_lookup(z_name);
+ if (mz)
+ rc = rte_memzone_free(mz);
+
+ 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..2769a185b 100644
--- a/lib/librte_ethdev/rte_ethdev_driver.h
+++ b/lib/librte_ethdev/rte_ethdev_driver.h
@@ -180,6 +180,20 @@ 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);
+/**
+ * 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
+ * @param size
+ */
+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.
diff --git a/lib/librte_ethdev/rte_ethdev_version.map
b/lib/librte_ethdev/rte_ethdev_version.map
index 715505604..5d3c209bc 100644
--- a/lib/librte_ethdev/rte_ethdev_version.map
+++ b/lib/librte_ethdev/rte_ethdev_version.map
@@ -82,6 +82,7 @@ DPDK_20.0 {
rte_eth_dev_vlan_filter;
rte_eth_devices;
rte_eth_dma_zone_reserve;
+ rte_eth_dma_zone_free;
rte_eth_find_next;
rte_eth_find_next_owned_by;
rte_eth_iterator_cleanup;
--
2.17.1
