From: Stephen Hemminger <stephen@networkplumber.org>
To: Dan Gora <dg@adax.com>
Cc: dev@dpdk.org, "Mattias Rönnblom" <mattias.ronnblom@ericsson.com>,
"David Marchand" <david.marchand@redhat.com>,
"Jerin Jacob" <jerinjacobk@gmail.com>
Subject: Re: [dpdk-dev] [PATCH 2/2] eal: resolve getentropy at run time for random seed
Date: Tue, 21 Apr 2020 14:03:10 -0700 [thread overview]
Message-ID: <20200421140310.32424051@hermes.lan> (raw)
In-Reply-To: <20200421195446.1730-3-dg@adax.com>
On Tue, 21 Apr 2020 16:54:45 -0300
Dan Gora <dg@adax.com> wrote:
> The getentropy() function was introduced into glibc v2.25 and so is
> not available on all supported platforms. Previously, if DPDK was
> compiled (using meson) on a system which has getentropy(), it would
> introduce a dependency on glibc v2.25 which would prevent that binary
> from running on a system with an older glibc. Similarly if DPDK was
> compiled on a system which did not have getentropy(), getentropy()
> could not be used even if the execution system supported it.
>
> Introduce a new static function, __rte_getentropy() which will try to
> resolve the getentropy() function dynamically using dlopen()/dlsym(),
> returning failure if the getentropy() function cannot be resolved or
> if it fails.
>
> This also allows getentropy() to be used as the random seed source
> when the traditional Makefile build for DPDK is used.
>
> Signed-off-by: Dan Gora <dg@adax.com>
I don't think DPDK has a requirement that building on newer glibc
has to work when run on older version. Glibc doesn't support it.
next prev parent reply other threads:[~2020-04-21 21:03 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-21 19:54 [dpdk-dev] [PATCH 0/2] eal: choose initial PRNG seed source at runtime Dan Gora
2020-04-21 19:54 ` [dpdk-dev] [PATCH 1/2] eal: check for rdseed at run time for random seed Dan Gora
2020-04-22 8:22 ` Mattias Rönnblom
2020-04-21 19:54 ` [dpdk-dev] [PATCH 2/2] eal: resolve getentropy " Dan Gora
2020-04-21 21:03 ` Stephen Hemminger [this message]
2020-04-21 21:08 ` Dan Gora
2020-04-22 8:28 ` Mattias Rönnblom
2020-04-22 17:44 ` Dan Gora
2020-04-22 20:14 ` Mattias Rönnblom
2020-04-22 20:35 ` Dan Gora
2020-04-23 10:04 ` Luca Boccassi
2020-04-23 17:38 ` Dan Gora
2020-04-27 12:44 ` Luca Boccassi
2020-04-27 16:57 ` Dan Gora
2020-04-30 8:41 ` Luca Boccassi
2020-04-30 20:43 ` Dan Gora
2020-05-01 10:33 ` Luca Boccassi
2020-05-01 21:05 ` Dan Gora
2020-05-04 8:04 ` Mattias Rönnblom
2020-05-04 14:13 ` Dan Gora
2020-05-04 14:19 ` Dan Gora
2020-06-02 5:10 ` Dan Gora
2020-06-09 15:37 ` Dan Gora
2020-06-10 8:15 ` Thomas Monjalon
2020-06-10 8:33 ` Luca Boccassi
2023-06-12 15:55 ` Stephen Hemminger
2020-06-10 8:07 ` Thomas Monjalon
2020-04-23 12:36 ` Mattias Rönnblom
2020-04-23 17:27 ` Dan Gora
2020-04-21 20:41 ` [dpdk-dev] [PATCH v2 0/2] eal: choose initial PRNG seed source at runtime Dan Gora
2020-04-21 20:41 ` [dpdk-dev] [PATCH v2 1/2] eal: check for rdseed at run time for random seed Dan Gora
2020-04-21 20:41 ` [dpdk-dev] [PATCH v2 2/2] eal: resolve getentropy " Dan Gora
2020-04-22 18:15 ` [dpdk-dev] [PATCH v3 0/2] eal: choose initial PRNG seed source at runtime Dan Gora
2020-04-22 18:15 ` [dpdk-dev] [PATCH v3 1/2] eal: check for rdseed at run time for random seed Dan Gora
2020-04-22 18:15 ` [dpdk-dev] [PATCH v3 2/2] eal: resolve getentropy " Dan Gora
2020-04-22 23:42 ` [dpdk-dev] [PATCH v4 0/2] eal: choose initial PRNG seed source at runtime Dan Gora
2020-04-22 23:42 ` [dpdk-dev] [PATCH v4 1/2] eal: check for rdseed at run time for random seed Dan Gora
2020-04-22 23:42 ` [dpdk-dev] [PATCH v4 2/2] eal: emulate glibc getentropy for initial " Dan Gora
2020-04-23 2:39 ` Stephen Hemminger
2020-04-23 17:42 ` Dan Gora
2020-06-29 9:30 ` Mattias Rönnblom
2020-06-29 17:57 ` Dan Gora
2020-06-29 20:57 ` Mattias Rönnblom
2020-06-29 9:32 ` [dpdk-dev] [PATCH v4 0/2] eal: choose initial PRNG seed source at runtime Mattias Rönnblom
2020-06-29 18:01 ` Dan Gora
2020-06-29 18:04 ` Dan Gora
2020-06-29 21:05 ` Mattias Rönnblom
2020-06-29 21:14 ` Dan Gora
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