[PATCH v3 22/33] net/ena/hal: rework Rx ring submission queue

[shaibran]

From: Shai Brandes <shaib...@amazon.com>

RX ring submission queue descriptors are always located in host memory
This optimization replaces the generic update tail method with a
tailored method for host memory type descriptors to avoid unnecessary if
statement.

Signed-off-by: Shai Brandes <shaib...@amazon.com>
Reviewed-by: Amit Bernstein <amitb...@amazon.com>
---
 drivers/net/ena/hal/ena_eth_com.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ena/hal/ena_eth_com.c 
b/drivers/net/ena/hal/ena_eth_com.c
index b9123f84c3..ebad38d15a 100644
--- a/drivers/net/ena/hal/ena_eth_com.c
+++ b/drivers/net/ena/hal/ena_eth_com.c
@@ -210,11 +210,8 @@ static int ena_com_sq_update_llq_tail(struct ena_com_io_sq 
*io_sq)
        return ENA_COM_OK;
 }
 
-static int ena_com_sq_update_tail(struct ena_com_io_sq *io_sq)
+static int ena_com_sq_update_reqular_queue_tail(struct ena_com_io_sq *io_sq)
 {
-       if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
-               return ena_com_sq_update_llq_tail(io_sq);
-
        io_sq->tail++;
 
        /* Switch phase bit in case of wrap around */
@@ -224,6 +221,14 @@ static int ena_com_sq_update_tail(struct ena_com_io_sq 
*io_sq)
        return ENA_COM_OK;
 }
 
+static int ena_com_sq_update_tail(struct ena_com_io_sq *io_sq)
+{
+       if (io_sq->mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)
+               return ena_com_sq_update_llq_tail(io_sq);
+
+       return ena_com_sq_update_reqular_queue_tail(io_sq);
+}
+
 static struct ena_eth_io_rx_cdesc_base *
        ena_com_rx_cdesc_idx_to_ptr(struct ena_com_io_cq *io_cq, u16 idx)
 {
@@ -662,7 +667,7 @@ int ena_com_add_single_rx_desc(struct ena_com_io_sq *io_sq,
        desc->buff_addr_hi =
                ((ena_buf->paddr & GENMASK_ULL(io_sq->dma_addr_bits - 1, 32)) 
>> 32);
 
-       return ena_com_sq_update_tail(io_sq);
+       return ena_com_sq_update_reqular_queue_tail(io_sq);
 }
 
 bool ena_com_cq_empty(struct ena_com_io_cq *io_cq)
-- 
2.17.1