[PATCH v3 1/6] examples/l3fwd-graph: remove redundant Tx queue limit

[Stephen Hemminger <stephen@networkplumber.org>]

From: Sivaprasad Tummala <sivaprasad.tummala@amd.com>

In `l3fwd-graph` application, Tx queues are configured per lcore
to enable a lockless design and achieve optimal performance.

The `MAX_TX_QUEUE_PER_PORT` macro, defined as `RTE_MAX_ETHPORTS`,
introduced an artificial constraint on the number of Tx queues
and limited core-scaling performance.

This patch removes the unused `MAX_TX_QUEUE_PER_PORT` macro and
redundant Tx queue check, allowing Tx queues to scale directly
with the no. of lcores.

Fixes: 08bd1a174461 ("examples/l3fwd-graph: add graph-based l3fwd skeleton")
Cc: ndabilpuram@marvell.com
Cc: stable@dpdk.org

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
---
 examples/l3fwd-graph/main.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/examples/l3fwd-graph/main.c b/examples/l3fwd-graph/main.c
index 01c65b0abd..5f89286dce 100644
--- a/examples/l3fwd-graph/main.c
+++ b/examples/l3fwd-graph/main.c
@@ -49,7 +49,6 @@
 #define RX_DESC_DEFAULT 1024
 #define TX_DESC_DEFAULT 1024
 
-#define MAX_TX_QUEUE_PER_PORT RTE_MAX_ETHPORTS
 #define MAX_RX_QUEUE_PER_PORT 128
 
 #define MAX_RX_QUEUE_PER_LCORE 16
@@ -1076,8 +1075,6 @@ main(int argc, char **argv)
 
 		nb_rx_queue = get_port_n_rx_queues(portid);
 		n_tx_queue = nb_lcores;
-		if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
-			n_tx_queue = MAX_TX_QUEUE_PER_PORT;
 		printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
 		       nb_rx_queue, n_tx_queue);
 
-- 
2.53.0