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From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: Stephen Hemminger <stephen@networkplumber.org>, suanmingm@nvidia.com
Subject: [dpdk-dev] [PATCH 1/2] ethdev: make flow API primary/secondary process safe
Date: Mon, 15 Mar 2021 12:27:21 -0700
Message-ID: <20210315192722.35490-2-stephen@networkplumber.org> (raw)
In-Reply-To: <20210315192722.35490-1-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


  reply	other threads:[~2021-03-15 19:27 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-15 19:27 [dpdk-dev] [PATCH 0/2] Mark shared pthread mutex Stephen Hemminger
2021-03-15 19:27 ` Stephen Hemminger [this message]
2021-03-16 23:48   ` [dpdk-dev] [PATCH 1/2] ethdev: make flow API primary/secondary process safe Suanming Mou
2021-03-17  0:13     ` Stephen Hemminger
2021-03-17  0:32       ` Suanming Mou
2021-04-14 13:06     ` Ferruh Yigit
2021-04-15  2:55       ` Suanming Mou
2021-04-15  3:17         ` Stephen Hemminger
2021-04-15  7:42         ` Ferruh Yigit
2021-04-15 20:04           ` Stephen Hemminger
2021-04-16  0:57           ` Suanming Mou
2021-04-16  3:19           ` Ajit Khaparde
2021-04-16  1:41       ` fengchengwen
2021-04-16  8:12         ` Ferruh Yigit
2021-04-16  8:18   ` Ferruh Yigit
2021-04-19 17:14   ` Thomas Monjalon
2021-04-19 17:45     ` Stephen Hemminger
2021-04-19 18:09       ` Thomas Monjalon
2021-06-08  8:07   ` Andrew Rybchenko
2021-03-15 19:27 ` [dpdk-dev] [PATCH 2/2] net/failsafe: fix primary/secondary mutex Stephen Hemminger
2021-04-14 13:10   ` Ferruh Yigit
2021-04-16  8:19     ` Ferruh Yigit
2021-04-19 17:08   ` Thomas Monjalon
2021-06-08  8:00     ` Andrew Rybchenko
2021-06-08 15:42       ` Stephen Hemminger
2021-06-08 15:55         ` Andrew Rybchenko
2021-06-08 20:48           ` Stephen Hemminger
2021-06-09 10:04             ` Andrew Rybchenko
2021-06-14 14:43               ` Gaëtan Rivet
2021-03-15 19:45 ` [dpdk-dev] [PATCH 0/2] Mark shared pthread mutex Stephen Hemminger
2021-03-16 16:28 ` Stephen Hemminger
2021-04-16  8:25   ` Ferruh Yigit

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