examples/l3fwd-power: fix RX interrupt disable

Message ID 1568131814-48424-1-git-send-email-xiao.zhang@intel.com
State New
Delegated to: Thomas Monjalon
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Series
  • examples/l3fwd-power: fix RX interrupt disable
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Checks

Context Check Description
ci/Intel-compilation success Compilation OK
ci/mellanox-Performance success Performance Testing PASS
ci/intel-Performance success Performance Testing PASS
ci/iol-dpdk_compile_ovs success Compile Testing PASS
ci/iol-dpdk_compile_spdk fail Compilie Testing issues
ci/iol-dpdk_compile success Compile Testing PASS
ci/checkpatch success coding style OK

Commit Message

Xiao Zhang Sept. 10, 2019, 4:10 p.m.
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(+)

Patch

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",