From: Alexei Starovoitov <ast@plumgrid.com>
To: Daniel Borkmann <daniel@iogearbox.net>, davem@davemloft.net
Cc: hannes@stressinduktion.org, netdev@vger.kernel.org
Subject: Re: [PATCH net-next v2 4/5] random32: add prandom_init_once helper for own rngs
Date: Wed, 7 Oct 2015 16:54:36 -0700 [thread overview]
Message-ID: <5615B0BC.7030005@plumgrid.com> (raw)
In-Reply-To: <7852684945acede41915662c1cbc6a83904e5d57.1444258406.git.daniel@iogearbox.net>
On 10/7/15 4:20 PM, Daniel Borkmann wrote:
> Add a prandom_init_once() facility that works on the rnd_state, so that
> users that are keeping their own state independent from prandom_u32() can
> initialize their taus113 per cpu states.
>
> The motivation here is similar to net_get_random_once(): initialize the
> state as late as possible in the hope that enough entropy has been
> collected for the seeding. prandom_init_once() makes use of the recently
> introduced prandom_seed_full_state() helper and is generic enough so that
> it could also be used on fast-paths due to the DO_ONCE().
>
> Signed-off-by: Daniel Borkmann<daniel@iogearbox.net>
> Acked-by: Hannes Frederic Sowa<hannes@stressinduktion.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
next prev parent reply other threads:[~2015-10-07 23:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-07 23:20 [PATCH net-next v2 0/5] BPF/random32 updates Daniel Borkmann
2015-10-07 23:20 ` [PATCH net-next v2 1/5] net: move net_get_random_once to lib Daniel Borkmann
2015-10-07 23:55 ` Alexei Starovoitov
2015-10-08 5:12 ` kbuild test robot
2015-10-08 6:42 ` Daniel Borkmann
2015-10-07 23:20 ` [PATCH net-next v2 2/5] once: make helper generic for calling functions once Daniel Borkmann
2015-10-07 23:52 ` Alexei Starovoitov
2015-10-07 23:20 ` [PATCH net-next v2 3/5] random32: add prandom_seed_full_state helper Daniel Borkmann
2015-10-07 23:54 ` Alexei Starovoitov
2015-10-07 23:20 ` [PATCH net-next v2 4/5] random32: add prandom_init_once helper for own rngs Daniel Borkmann
2015-10-07 23:54 ` Alexei Starovoitov [this message]
2015-10-07 23:20 ` [PATCH net-next v2 5/5] bpf: split state from prandom_u32() and consolidate {c,e}BPF prngs Daniel Borkmann
2015-10-08 12:27 ` [PATCH net-next v2 0/5] BPF/random32 updates David Miller
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