[PATCH] ethdev: fix incorrect function name in comment

[Bruce Richardson <bruce.richardson@intel.com>]

For those using the function comments as a guide, provide the name of
the correct callback function to use when wanting to count dropped
packets from the ethdev tx buffering system.

Fixes: d6c99e62c852 ("ethdev: add buffered Tx")
Cc: stable@dpdk.org

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 lib/ethdev/rte_ethdev.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 85b9af7a02..2fd3cd808d 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -3732,7 +3732,7 @@ rte_eth_tx_buffer_init(struct rte_eth_dev_tx_buffer *buffer, uint16_t size);
  * for example, to count dropped packets, or to retry transmission of packets
  * which cannot be sent, this function should be used to register a suitable
  * callback function to implement the desired behaviour.
- * The example callback "rte_eth_count_unsent_packet_callback()" is also
+ * The example callback "rte_eth_tx_buffer_count_callback()" is also
  * provided as reference.
  *
  * @param buffer
-- 
2.39.2