[dpdk-dev] [PATCH v4 1/4] ethdev: rename memzones allocated for DMA

Thomas Monjalon thomas at monjalon.net
Thu Oct 11 23:02:48 CEST 2018

The helper rte_eth_dma_zone_reserve() is called by PMDs
when probing a new port.
It creates a new memzone with an unique name.
The name of this memzone was using the name of the driver
doing the probe.

In order to avoid assigning the driver before the end of the probing
(next patch), the driver name is removed from these memzone names.
The ethdev name (data->name) is not used because it may be too long
and may be not set at this stage of probing.

Syntax of old name: <driver>_<ring>_<port>_<queue>
Syntax of new name: eth_p<port>_q<queue>_<ring>

Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
 lib/librte_ethdev/rte_ethdev.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index ef99f7068..ec443def5 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -3441,9 +3441,8 @@ rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
 	char z_name[RTE_MEMZONE_NAMESIZE];
 	const struct rte_memzone *mz;
-	snprintf(z_name, sizeof(z_name), "%s_%s_%d_%d",
-		 dev->device->driver->name, ring_name,
-		 dev->data->port_id, queue_id);
+	snprintf(z_name, sizeof(z_name), "eth_p%d_q%d_%s",
+		 dev->data->port_id, queue_id, ring_name);
 	mz = rte_memzone_lookup(z_name);
 	if (mz)

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