[dpdk-dev] [PATCH] Added Spinlock to l3fwd-vf example to prevent race conditioning

[Daniel Mrzyglod]

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod at intel.com>
---
 examples/l3fwd-vf/main.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/examples/l3fwd-vf/main.c b/examples/l3fwd-vf/main.c
index 2ca5c21..57852d0 100644
--- a/examples/l3fwd-vf/main.c
+++ b/examples/l3fwd-vf/main.c
@@ -54,6 +54,7 @@
 #include <rte_per_lcore.h>
 #include <rte_launch.h>
 #include <rte_atomic.h>
+#include <rte_spinlock.h>
 #include <rte_cycles.h>
 #include <rte_prefetch.h>
 #include <rte_lcore.h>
@@ -328,7 +329,7 @@ struct lcore_conf {
 } __rte_cache_aligned;
 
 static struct lcore_conf lcore_conf[RTE_MAX_LCORE];
-
+static rte_spinlock_t spinlock_conf[RTE_MAX_ETHPORTS]={RTE_SPINLOCK_INITIALIZER};
 /* Send burst of packets on an output interface */
 static inline int
 send_burst(struct lcore_conf *qconf, uint16_t n, uint8_t port)
@@ -340,7 +341,10 @@ send_burst(struct lcore_conf *qconf, uint16_t n, uint8_t port)
 	queueid = qconf->tx_queue_id;
 	m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 
+	rte_spinlock_lock(&spinlock_conf[port]) ;
 	ret = rte_eth_tx_burst(port, queueid, m_table, n);
+	rte_spinlock_unlock(&spinlock_conf[port]);
+	
 	if (unlikely(ret < n)) {
 		do {
 			rte_pktmbuf_free(m_table[ret]);
-- 
1.7.9.5