From: Xiao Wang <xiao.w.wang@intel.com>
Date: Tue, 21 Jan 2020 03:06:57 +0000 (-0500)
Subject: examples/l3fwd-power: fix interrupt disable
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=49dcf7b98e87a5d2880693da4c09af11e58f3447;p=dpdk.git

examples/l3fwd-power: fix interrupt disable

Since all related queues' interrupts are turned on before epoll, we need
to turn off all the interrupts after wakeup. This patch fixes the issue
of only turning off the interrupted queues.

Fixes: b736d64787fc ("examples/l3fwd-power: disable Rx interrupt when waking up")
Cc: stable@dpdk.org

Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Tested-by: Harman Kalra <hkalra@marvell.com>
Reviewed-by: Liang Ma <liang.j.ma@intel.com>
Tested-by: Liang Ma <liang.j.ma@intel.com>
Acked-by: David Hunt <david.hunt@intel.com>
---

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index e63abb1da8..c7fe0ec034 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -870,9 +870,6 @@ sleep_until_rx_interrupt(int num)
 		port_id = ((uintptr_t)data) >> CHAR_BIT;
 		queue_id = ((uintptr_t)data) &
 			RTE_LEN2MASK(CHAR_BIT, uint8_t);
-		rte_spinlock_lock(&(locks[port_id]));
-		rte_eth_dev_rx_intr_disable(port_id, queue_id);
-		rte_spinlock_unlock(&(locks[port_id]));
 		RTE_LOG(INFO, L3FWD_POWER,
 			"lcore %u is waked up from rx interrupt on"
 			" port %d queue %d\n",
@@ -882,7 +879,7 @@ sleep_until_rx_interrupt(int num)
 	return 0;
 }
 
-static void turn_on_intr(struct lcore_conf *qconf)
+static void turn_on_off_intr(struct lcore_conf *qconf, bool on)
 {
 	int i;
 	struct lcore_rx_queue *rx_queue;
@@ -895,7 +892,10 @@ static void turn_on_intr(struct lcore_conf *qconf)
 		queue_id = rx_queue->queue_id;
 
 		rte_spinlock_lock(&(locks[port_id]));
-		rte_eth_dev_rx_intr_enable(port_id, queue_id);
+		if (on)
+			rte_eth_dev_rx_intr_enable(port_id, queue_id);
+		else
+			rte_eth_dev_rx_intr_disable(port_id, queue_id);
 		rte_spinlock_unlock(&(locks[port_id]));
 	}
 }
@@ -1330,9 +1330,10 @@ start_rx:
 			else {
 				/* suspend until rx interrupt triggers */
 				if (intr_en) {
-					turn_on_intr(qconf);
+					turn_on_off_intr(qconf, 1);
 					sleep_until_rx_interrupt(
 						qconf->n_rx_queue);
+					turn_on_off_intr(qconf, 0);
 					/**
 					 * start receiving packets immediately
 					 */