From patchwork Tue Apr 17 11:58:19 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antonio Quartulli X-Patchwork-Id: 1704 Return-Path: Received: from latitanza.investici.org (latitanza.investici.org [82.94.249.234]) by open-mesh.org (Postfix) with ESMTPS id D89616007A2 for ; Tue, 17 Apr 2012 13:57:37 +0200 (CEST) Authentication-Results: open-mesh.org; dkim=pass (1024-bit key) header.i=@autistici.org; dkim-adsp=pass Received: from [82.94.249.234] (latitanza [82.94.249.234]) (Authenticated sender: ordex@autistici.org) by localhost (Postfix) with ESMTPSA id 005F19859C; Tue, 17 Apr 2012 11:57:35 +0000 (UTC) X-DKIM: Sendmail DKIM Filter v2.8.2 latitanza.investici.org 005F19859C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=autistici.org; s=stigmate; t=1334663857; bh=O/G4+jYt0w4po91asDCXie9mv9/fjHnkvvgxJfvDqSk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=WgnEJ8zEKXNczV1mNPm5XtTMFBw/iSbLkpnfvMoxSdiZ1etPubXRFVCDLVPAMEUKz H1tJJu1AoGz4GWA3x1TRnhoqOyQINLIYSYjt+82nvLKTc7pGfPmupQ+6ZUe/dsHpen Lzv7gbSSf6iS15ZXHBHrEYSAz49emWqICT/K0Cn8= From: Antonio Quartulli To: davem@davemloft.net Date: Tue, 17 Apr 2012 13:58:19 +0200 Message-Id: <1334663907-22725-4-git-send-email-ordex@autistici.org> X-Mailer: git-send-email 1.7.9.4 In-Reply-To: <1334663907-22725-1-git-send-email-ordex@autistici.org> References: <1334663907-22725-1-git-send-email-ordex@autistici.org> Cc: netdev@vger.kernel.org, b.a.t.m.a.n@lists.open-mesh.org, Marek Lindner Subject: [B.A.T.M.A.N.] [PATCH 03/11] batman-adv: randomize initial seqno to avoid collision X-BeenThere: b.a.t.m.a.n@lists.open-mesh.org X-Mailman-Version: 2.1.13 Precedence: list Reply-To: The list for a Better Approach To Mobile Ad-hoc Networking List-Id: The list for a Better Approach To Mobile Ad-hoc Networking List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Apr 2012 11:57:38 -0000 From: Marek Lindner Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli --- net/batman-adv/bat_iv_ogm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 117b831..4661bd4 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -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); hard_iface->packet_len = BATMAN_OGM_LEN; hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);