[dpdk-dev] [PATCH 1/2] ethdev: make flow API primary/secondary process safe

[Stephen Hemminger <stephen@networkplumber.org>]

Posix mutex are not by default safe for protecting for usage
from multiple processes. The flow ops mutex could be used by
both primary and secondary processes.

Bugzilla ID: 662
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Fixes: 80d1a9aff7f6 ("ethdev: make flow API thread safe")
Cc: suanmingm@nvidia.com
---
 lib/librte_ethdev/rte_ethdev.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 6f514c388b4e..d1024df408a5 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -470,6 +470,7 @@ rte_eth_dev_allocate(const char *name)
 {
 	uint16_t port_id;
 	struct rte_eth_dev *eth_dev = NULL;
+	pthread_mutexattr_t attr;
 	size_t name_len;
 
 	name_len = strnlen(name, RTE_ETH_NAME_MAX_LEN);
@@ -506,7 +507,10 @@ rte_eth_dev_allocate(const char *name)
 	strlcpy(eth_dev->data->name, name, sizeof(eth_dev->data->name));
 	eth_dev->data->port_id = port_id;
 	eth_dev->data->mtu = RTE_ETHER_MTU;
-	pthread_mutex_init(&eth_dev->data->flow_ops_mutex, NULL);
+
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);	
+	pthread_mutex_init(&eth_dev->data->flow_ops_mutex, &attr);
 
 unlock:
 	rte_spinlock_unlock(&eth_dev_shared_data->ownership_lock);
-- 
2.30.2