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* [dpdk-stable] examples/l3fwd-power: fix RX interrupt disable
@ 2019-09-10 16:10 Xiao Zhang
  0 siblings, 0 replies; only message in thread
From: Xiao Zhang @ 2019-09-10 16:10 UTC (permalink / raw)
  To: dev; +Cc: yong.liu, Xiao Zhang, stable

Interrupt will not be received when disabling RX interrupt without
synchronization mechanism sometimes which leads to wake up issue,
add spinlock to fix it.

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

Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
---
 examples/l3fwd-power/main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index fd8d952..ff1ad37 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -880,7 +880,9 @@ 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",
-- 
2.7.4


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2019-09-10 16:10 [dpdk-stable] examples/l3fwd-power: fix RX interrupt disable Xiao Zhang

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