[PATCH v2 2/3] net/ixgbe: fix null packet prepare function

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

As per recent change by the following commit:

commit 066f3d9cc21c ("ethdev: remove callback checks from fast path")

framework unconditionally invokes dev->tx_pkt_prepare. Ensure
dev->tx_pkt_prepare is not NULL when vector or simple TX paths are
selected, by assigning rte_eth_tx_pkt_prepare_dummy.

This aligns with expectations with above mentioned commit.

Fixes: 7829b8d52be0 ("net/ixgbe: add Tx preparation")
Cc: stable@dpdk.org

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 drivers/net/intel/ixgbe/ixgbe_rxtx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/intel/ixgbe/ixgbe_rxtx.c b/drivers/net/intel/ixgbe/ixgbe_rxtx.c
index 897ee2b671..a7583c178a 100644
--- a/drivers/net/intel/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/intel/ixgbe/ixgbe_rxtx.c
@@ -2653,7 +2653,7 @@ ixgbe_set_tx_function(struct rte_eth_dev *dev, struct ci_tx_queue *txq)
 #endif
 			(txq->tx_rs_thresh >= IXGBE_TX_MAX_BURST)) {
 		PMD_INIT_LOG(DEBUG, "Using simple tx code path");
-		dev->tx_pkt_prepare = NULL;
+		dev->tx_pkt_prepare = rte_eth_tx_pkt_prepare_dummy;
 		if (txq->tx_rs_thresh <= IXGBE_TX_MAX_FREE_BUF_SZ &&
 				rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128 &&
 				(rte_eal_process_type() != RTE_PROC_PRIMARY ||
-- 
2.48.1