[PATCH v4 1/7] net/ena/base: avoid recalculating desc per entry

[Shai Brandes]

desc_per_entry is precomputed in ena_com_config_llq_info() using
desc_stride_ctrl and desc_list_entry_size, which remain unchanged after
device negotiation. Reuse the existing value instead of recalculating it
in the fast path.

Signed-off-by: Shai Brandes <shaibran at amazon.com>
Reviewed-by: Amit Bernstein <amitbern at amazon.com>
Reviewed-by: Yosef Raisman <yraisman at amazon.com>
---
 drivers/net/ena/base/ena_eth_com.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/ena/base/ena_eth_com.c b/drivers/net/ena/base/ena_eth_com.c
index 90dd85c7ff..c6668238e5 100644
--- a/drivers/net/ena/base/ena_eth_com.c
+++ b/drivers/net/ena/base/ena_eth_com.c
@@ -248,11 +248,7 @@ static int ena_com_sq_update_llq_tail(struct ena_com_io_sq *io_sq)
 		       0x0, llq_info->desc_list_entry_size);
 
 		pkt_ctrl->idx = 0;
-		if (unlikely(llq_info->desc_stride_ctrl == ENA_ADMIN_SINGLE_DESC_PER_ENTRY))
-			pkt_ctrl->descs_left_in_line = 1;
-		else
-			pkt_ctrl->descs_left_in_line =
-			llq_info->desc_list_entry_size / io_sq->desc_entry_size;
+		pkt_ctrl->descs_left_in_line = llq_info->descs_per_entry;
 	}
 
 	return ENA_COM_OK;
-- 
2.17.1