[dpdk-stable] [PATCH] net/ena/base: fix doorbell evaluation for the LLQ case

[Artur Rojek]

From: Michal Krawczyk <mk at semihalf.com>

This patch adds a missing LLQ-related check in the
ena_com_is_doorbell_needed() routine, which is relevant for the feature
supported by the next generation HW of the ENA.

Fixes: b2b02edeb0d6 ("net/ena/base: upgrade HAL for new HW features")
CC: stable at dpdk.org

Signed-off-by: Michal Krawczyk <mk at semihalf.com>
[Extracted from a bigger patch]
Signed-off-by: Artur Rojek <ar at semihalf.com>
---
 drivers/net/ena/base/ena_eth_com.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ena/base/ena_eth_com.h b/drivers/net/ena/base/ena_eth_com.h
index e37b642d4..3d66237b8 100644
--- a/drivers/net/ena/base/ena_eth_com.h
+++ b/drivers/net/ena/base/ena_eth_com.h
@@ -133,7 +133,8 @@ static inline bool ena_com_is_doorbell_needed(struct ena_com_io_sq *io_sq,
 	llq_info = &io_sq->llq_info;
 	num_descs = ena_tx_ctx->num_bufs;
 
-	if (unlikely(ena_com_meta_desc_changed(io_sq, ena_tx_ctx)))
+	if (llq_info->disable_meta_caching ||
+	    unlikely(ena_com_meta_desc_changed(io_sq, ena_tx_ctx)))
 		++num_descs;
 
 	if (num_descs > llq_info->descs_num_before_header) {
-- 
2.28.0