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From: Stephen Hemminger <stephen@networkplumber.org>
To: Olivier Matz <olivier.matz@6wind.com>
Cc: dev@dpdk.org, bruce.richardson@intel.com
Subject: Re: [dpdk-dev] [PATCH 1/4] lpm: allocation of an existing object should fail
Date: Wed, 30 Mar 2016 14:46:49 -0700	[thread overview]
Message-ID: <20160330144649.670d66d1@xeon-e3> (raw)
In-Reply-To: <1459351827-3346-2-git-send-email-olivier.matz@6wind.com>

On Wed, 30 Mar 2016 17:30:24 +0200
Olivier Matz <olivier.matz@6wind.com> wrote:

> diff --git a/lib/librte_lpm/rte_lpm6.c b/lib/librte_lpm/rte_lpm6.c
> index 4c44cd7..9877a30 100644
> --- a/lib/librte_lpm/rte_lpm6.c
> +++ b/lib/librte_lpm/rte_lpm6.c
> @@ -182,8 +182,11 @@ rte_lpm6_create(const char *name, int socket_id,
>  		if (strncmp(name, lpm->name, RTE_LPM6_NAMESIZE) == 0)
>  			break;
>  	}
> -	if (te != NULL)
> +	if (te != NULL) {
> +		lpm = NULL;
> +		rte_errno = EEXIST;
>  		goto exit;
> +	}
>  
>  	/* allocate tailq entry */
>  

with older memzone model, objects in huge memory area were never freed.
That means when application restarts it finds the old LPM and works.
With your change it would break such an application.

  reply	other threads:[~2016-03-30 21:46 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-15 12:25 [dpdk-dev] [RFC] hash/lpm: return NULL if the object exists Olivier Matz
2016-03-25 10:32 ` Olivier Matz
2016-03-25 10:45   ` Bruce Richardson
2016-03-30 15:30 ` [dpdk-dev] [PATCH 0/4] fix lpm and hash creation Olivier Matz
2016-03-30 15:30   ` [dpdk-dev] [PATCH 1/4] lpm: allocation of an existing object should fail Olivier Matz
2016-03-30 21:46     ` Stephen Hemminger [this message]
2016-03-31  7:35       ` Olivier Matz
2016-04-01 16:25         ` Olivier Matz
2016-03-31 10:55       ` Bruce Richardson
2016-03-30 15:30   ` [dpdk-dev] [PATCH 2/4] hash: " Olivier Matz
2016-03-30 15:30   ` [dpdk-dev] [PATCH 3/4] hash: keep the list locked at creation Olivier Matz
2016-03-30 15:30   ` [dpdk-dev] [PATCH 4/4] autotest: fix func reentrancy Olivier Matz
2016-03-31  7:35   ` [dpdk-dev] [PATCH 0/4] fix lpm and hash creation Olivier Matz
2016-04-05  7:35   ` [dpdk-dev] [PATCH v2 0/4] fix creation of duplicate lpm and hash Olivier Matz
2016-04-05  7:35     ` [dpdk-dev] [PATCH v2 1/4] lpm: allocation of an existing object should fail Olivier Matz
2016-04-05  7:35     ` [dpdk-dev] [PATCH v2 2/4] hash: " Olivier Matz
2016-04-05  7:35     ` [dpdk-dev] [PATCH v2 3/4] hash: keep the list locked at creation Olivier Matz
2016-04-05 11:05       ` De Lara Guarch, Pablo
2016-04-05  7:35     ` [dpdk-dev] [PATCH v2 4/4] autotest: fix func reentrancy Olivier Matz
2016-04-05 11:00       ` De Lara Guarch, Pablo
2016-04-05 11:53     ` [dpdk-dev] [PATCH v3 0/4] fix creation of duplicate lpm and hash Olivier Matz
2016-04-05 11:53       ` [dpdk-dev] [PATCH v3 1/4] lpm: allocation of an existing object should fail Olivier Matz
2016-04-05 11:53       ` [dpdk-dev] [PATCH v3 2/4] hash: " Olivier Matz
2016-04-05 11:53       ` [dpdk-dev] [PATCH v3 3/4] hash: keep the list locked at creation Olivier Matz
2016-04-05 11:53       ` [dpdk-dev] [PATCH v3 4/4] autotest: fix func reentrancy Olivier Matz
2016-04-05 15:51       ` [dpdk-dev] [PATCH v3 0/4] fix creation of duplicate lpm and hash Thomas Monjalon
2016-04-06 10:11         ` De Lara Guarch, Pablo
2016-04-06 10:32       ` De Lara Guarch, Pablo
2016-04-06 11:14         ` Olivier Matz
2016-04-06 11:20           ` De Lara Guarch, Pablo
2016-04-06 11:57             ` Olivier Matz
2016-04-06 13:27       ` [dpdk-dev] [PATCH v4 " Olivier Matz
2016-04-06 13:27         ` [dpdk-dev] [PATCH v4 1/4] lpm: allocation of an existing object should fail Olivier Matz
2016-04-06 13:27         ` [dpdk-dev] [PATCH v4 2/4] hash: " Olivier Matz
2016-04-06 13:28         ` [dpdk-dev] [PATCH v4 3/4] hash: keep the list locked at creation Olivier Matz
2016-04-06 13:28         ` [dpdk-dev] [PATCH v4 4/4] autotest: fix func reentrancy Olivier Matz
2016-04-06 15:31         ` [dpdk-dev] [PATCH v4 0/4] fix creation of duplicate lpm and hash Thomas Monjalon

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