[PATCH v3 1/2] examples/l3fwd: use single set of variables throughout the code

[Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>]

nb_rxd and nb_txd are used in polling mode and event mode of
operation. nb_rxd and nb_txd are already global in polling mode
but are not visible to event mode code. Make them visible to all
parts of the application.

Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Kathleen Capella <kathleen.capella@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
---
DTS test cases require changing the RX and TX queue depths.
Currently, this is achieved by patching the DPDK code. This patch set
provides a mechanism to configure the queue depths while launching
the application. With this change DTS test cases do not need
to modify the DPDK code.

v2 - Single parse function, additional validation on input (Stephen)

v2 - Fixed typo (Ruifeng) and adjusted the commit msg (Kathleen).

 examples/l3fwd/l3fwd.h       | 4 ++++
 examples/l3fwd/l3fwd_event.c | 2 --
 examples/l3fwd/main.c        | 5 ++---
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/examples/l3fwd/l3fwd.h b/examples/l3fwd/l3fwd.h
index 38ca19133c..4ccdb28b4a 100644
--- a/examples/l3fwd/l3fwd.h
+++ b/examples/l3fwd/l3fwd.h
@@ -81,6 +81,10 @@ struct lcore_conf {
 
 extern volatile bool force_quit;
 
+/* RX and TX queue depths */
+extern uint16_t nb_rxd;
+extern uint16_t nb_txd;
+
 /* ethernet addresses of ports */
 extern uint64_t dest_eth_addr[RTE_MAX_ETHPORTS];
 extern struct rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
diff --git a/examples/l3fwd/l3fwd_event.c b/examples/l3fwd/l3fwd_event.c
index dd9eafa9b9..7a401290f8 100644
--- a/examples/l3fwd/l3fwd_event.c
+++ b/examples/l3fwd/l3fwd_event.c
@@ -43,8 +43,6 @@ l3fwd_eth_dev_port_setup(struct rte_eth_conf *port_conf)
 {
 	struct l3fwd_event_resources *evt_rsrc = l3fwd_get_eventdev_rsrc();
 	uint16_t nb_ports = rte_eth_dev_count_avail();
-	uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
-	uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 	unsigned int nb_lcores = rte_lcore_count();
 	struct rte_eth_conf local_port_conf;
 	struct rte_eth_dev_info dev_info;
diff --git a/examples/l3fwd/main.c b/examples/l3fwd/main.c
index eb68ffc5aa..acd186ab7d 100644
--- a/examples/l3fwd/main.c
+++ b/examples/l3fwd/main.c
@@ -53,9 +53,8 @@
 
 #define MAX_LCORE_PARAMS 1024
 
-/* Static global variables used within this file. */
-static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
-static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
+uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
+uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
 
 /**< Ports set in promiscuous mode off by default. */
 static int promiscuous_on;
-- 
2.25.1