[dpdk-stable] [PATCH 19.11 02/12] ethdev: fix description of tx descriptor status

[Thierry Herbelot <thierry.herbelot@6wind.com>]

From: Olivier Matz <olivier.matz@6wind.com>

The API comment of rte_eth_tx_descriptor_status() was incorrect. The reference
descriptor (when offset = 0) is not where the next packet will be sent, but
where the latest packet has been enqueued.

Fixes: 52f5cdd2e897 ("ethdev: add descriptor status API")
Cc: stable at dpdk.org

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
---
 lib/librte_ethdev/rte_ethdev.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index dc6596bc93b4..b423e71050e9 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -4245,8 +4245,8 @@ rte_eth_rx_descriptor_status(uint16_t port_id, uint16_t queue_id,
  * @param queue_id
  *  A valid Tx queue identifier on this port.
  * @param offset
- *  The offset of the descriptor starting from tail (0 is the place where
- *  the next packet will be send).
+ *  The offset of the descriptor starting from tail (0 is the last written
+ *  descriptor).
  *
  * @return
  *  - (RTE_ETH_TX_DESC_FULL) Descriptor is being processed by the hw, i.e.
-- 
2.11.0