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From: Suanming Mou <suanmingm@nvidia.com>
To: Stephen Hemminger <stephen@networkplumber.org>,
	"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH 1/2] ethdev: make flow API primary/secondary process safe
Date: Tue, 16 Mar 2021 23:48:57 +0000
Message-ID: <BL0PR12MB2577BE52E5BCA3A585D9DFB8C16B9@BL0PR12MB2577.namprd12.prod.outlook.com> (raw)
In-Reply-To: <20210315192722.35490-2-stephen@networkplumber.org>

Hi Stephen,

> -----Original Message-----
> From: Stephen Hemminger <stephen@networkplumber.org>
> Sent: Tuesday, March 16, 2021 3:27 AM
> To: dev@dpdk.org
> Cc: Stephen Hemminger <stephen@networkplumber.org>; Suanming Mou
> <suanmingm@nvidia.com>
> Subject: [PATCH 1/2] ethdev: make flow API primary/secondary process safe
> 
> 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.

Process safe is something more widely scope. I assume it should be another feature but not a bugfix for thread-safe?
And the fag RTE_ETH_DEV_FLOW_OPS_THREAD_SAFE we have added is just thread safe.

> 
> 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:[~2021-03-16 23:49 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 ` [dpdk-dev] [PATCH 1/2] ethdev: make flow API primary/secondary process safe Stephen Hemminger
2021-03-16 23:48   ` Suanming Mou [this message]
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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