[PATCH 1/6] examples/l3fwd-power: factor out Rx interrupt sleep path

The interrupt and legacy main loops carry an identical block that arms
the Rx queue interrupts of the lcore, sleeps until one triggers and
disarms them again. Move it to a helper so the following fixes touch a
single place.

No functional change.

Signed-off-by: Maxime Leroy <[email protected]>
---
 examples/l3fwd-power/main.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index 705cab8f2d..764899217c 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -910,6 +910,14 @@ static int event_register(struct lcore_conf *qconf)
 	return 0;
 }
 
+static void
+rx_interrupt_wait(struct lcore_conf *qconf)
+{
+	turn_on_off_intr(qconf, 1);
+	sleep_until_rx_interrupt(qconf->n_rx_queue, rte_lcore_id());
+	turn_on_off_intr(qconf, 0);
+}
+
 /* Main processing loop. 8< */
 static int main_intr_loop(__rte_unused void *dummy)
 {
@@ -1054,11 +1062,7 @@ static int main_intr_loop(__rte_unused void *dummy)
 			else {
 				/* suspend until rx interrupt triggers */
 				if (intr_en) {
-					turn_on_off_intr(qconf, 1);
-					sleep_until_rx_interrupt(
-							qconf->n_rx_queue,
-							lcore_id);
-					turn_on_off_intr(qconf, 0);
+					rx_interrupt_wait(qconf);
 					/**
 					 * start receiving packets immediately
 					 */
@@ -1372,11 +1376,7 @@ main_legacy_loop(__rte_unused void *dummy)
 			else {
 				/* suspend until rx interrupt triggers */
 				if (intr_en) {
-					turn_on_off_intr(qconf, 1);
-					sleep_until_rx_interrupt(
-							qconf->n_rx_queue,
-							lcore_id);
-					turn_on_off_intr(qconf, 0);
+					rx_interrupt_wait(qconf);
 					/**
 					 * start receiving packets immediately
 					 */
-- 
2.43.0