From: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
Date: Tue, 8 Jul 2014 11:16:24 +0000 (+0100)
Subject: examples/l3fwd-vf: fix race condition
X-Git-Tag: spdx-start~9950
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=c062d3eb71e1a0026256d651d1ff7fcbbc03a2e5;p=dpdk.git

examples/l3fwd-vf: fix race condition

When the routing is through the same queue, the app crashed.

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
---

diff --git a/examples/l3fwd-vf/main.c b/examples/l3fwd-vf/main.c
index 59a7907c26..7cc7228d62 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>
@@ -302,7 +303,7 @@ 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)
@@ -314,7 +315,10 @@ 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]);