From: David Miller <davem@davemloft.net>
To: ordex@autistici.org
Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org,
lindner_marek@yahoo.de
Subject: Re: [PATCH 03/11] batman-adv: randomize initial seqno to avoid collision
Date: Tue, 17 Apr 2012 22:45:27 -0400 (EDT) [thread overview]
Message-ID: <20120417.224527.288514574622832184.davem@davemloft.net> (raw)
In-Reply-To: <1334663907-22725-4-git-send-email-ordex@autistici.org>
From: Antonio Quartulli <ordex@autistici.org>
Date: Tue, 17 Apr 2012 13:58:19 +0200
> @@ -33,6 +33,11 @@
> static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface)
> {
> struct batman_ogm_packet *batman_ogm_packet;
> + unsigned long random_seqno;
> +
> + /* randomize initial seqno to avoid collision */
> + get_random_bytes(&random_seqno, sizeof(unsigned long));
> + atomic_set(&hard_iface->seqno, (uint32_t)random_seqno);
This is silly.
Just use "uint32_t" for the type of random_seqno and the sizeof passed
to get_random_bytes.
And here comes the magic part.
Amazing, no ugly and pointless casts needed!
WARNING: multiple messages have this Message-ID (diff)
From: David Miller <davem@davemloft.net>
To: ordex@autistici.org
Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org,
lindner_marek@yahoo.de
Subject: Re: [B.A.T.M.A.N.] [PATCH 03/11] batman-adv: randomize initial seqno to avoid collision
Date: Tue, 17 Apr 2012 22:45:27 -0400 (EDT) [thread overview]
Message-ID: <20120417.224527.288514574622832184.davem@davemloft.net> (raw)
In-Reply-To: <1334663907-22725-4-git-send-email-ordex@autistici.org>
From: Antonio Quartulli <ordex@autistici.org>
Date: Tue, 17 Apr 2012 13:58:19 +0200
> @@ -33,6 +33,11 @@
> static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface)
> {
> struct batman_ogm_packet *batman_ogm_packet;
> + unsigned long random_seqno;
> +
> + /* randomize initial seqno to avoid collision */
> + get_random_bytes(&random_seqno, sizeof(unsigned long));
> + atomic_set(&hard_iface->seqno, (uint32_t)random_seqno);
This is silly.
Just use "uint32_t" for the type of random_seqno and the sizeof passed
to get_random_bytes.
And here comes the magic part.
Amazing, no ugly and pointless casts needed!
next prev parent reply other threads:[~2012-04-18 2:48 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-17 11:58 pull request: batman-adv 2012-04-17 Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 01/11] batman-adv: move ogm initialization into the proper function Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 02/11] batman-adv: refactoring API: find generalized name for bat_ogm_init callback Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 03/11] batman-adv: randomize initial seqno to avoid collision Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-18 2:45 ` David Miller [this message]
2012-04-18 2:45 ` David Miller
[not found] ` <20120417.224527.288514574622832184.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2012-04-18 6:42 ` Antonio Quartulli
2012-04-18 6:42 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 04/11] batman-adv: add iface_disable() callback to routing API Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 05/11] batman-adv: handle routing code initialization properly Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
[not found] ` <1334663907-22725-6-git-send-email-ordex-GaUfNO9RBHfsrOwW+9ziJQ@public.gmane.org>
2012-04-18 2:46 ` David Miller
2012-04-18 2:46 ` [B.A.T.M.A.N.] " David Miller
[not found] ` <20120417.224630.1104076946118354940.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2012-04-18 6:45 ` Antonio Quartulli
2012-04-18 6:45 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 06/11] batman-adv: refactoring API: find generalized name for bat_ogm_init_primary callback Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 07/11] batman-adv: rename BATMAN_OGM_LEN to BATMAN_OGM_HLEN Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 08/11] batman-adv: mark existing ogm variables as batman iv Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 09/11] batman-adv: use ETH_HLEN instead of sizeof(struct ethhdr) Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-17 11:58 ` [PATCH 10/11] batman-adv: print OGM seq numbers as unsigned long Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
[not found] ` <1334663907-22725-11-git-send-email-ordex-GaUfNO9RBHfsrOwW+9ziJQ@public.gmane.org>
2012-04-18 2:47 ` David Miller
2012-04-18 2:47 ` [B.A.T.M.A.N.] " David Miller
2012-04-18 6:47 ` Antonio Quartulli
2012-04-18 6:47 ` [B.A.T.M.A.N.] " Antonio Quartulli
[not found] ` <20120418064659.GC27966-E/2OGukznS5g9hUCZPvPmw@public.gmane.org>
2012-04-18 7:01 ` Antonio Quartulli
2012-04-18 7:01 ` [B.A.T.M.A.N.] " Antonio Quartulli
[not found] ` <20120418070134.GD27966-E/2OGukznS5g9hUCZPvPmw@public.gmane.org>
2012-04-18 7:24 ` Antonio Quartulli
2012-04-18 7:24 ` [B.A.T.M.A.N.] " Antonio Quartulli
2012-04-18 7:28 ` David Miller
2012-04-18 7:28 ` [B.A.T.M.A.N.] " David Miller
2012-04-17 11:58 ` [PATCH 11/11] batman-adv: skip the window protection test when the originator has no neighbours Antonio Quartulli
2012-04-17 11:58 ` [B.A.T.M.A.N.] " Antonio Quartulli
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