From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 02 Jun 2025 09:57:49 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uM03J-002t3D-1C for lore@lore.pengutronix.de; Mon, 02 Jun 2025 09:57:49 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uM03I-0001Z8-Ou for lore@pengutronix.de; Mon, 02 Jun 2025 09:57:49 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:To: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cf3oy6gIuKLKZ0BNQyiJSZDndvHLRzLHwifaMSLREeM=; b=DjwQMXBpLnp1T47v90cDW5amm7 I9eIwipRXgPnE0KZ+8Gf0R+ioX5baIcEpTiSrxfSChcQbuhVCwaiduQ/4M1tCQft3WcszGXoPdJ31 4gGToPzhDczpVxw4FWrNcFGVhdVfbZZQz6szQyxkzrFfOhjrbM38t1LDovXwu0Mf2kQuUoywD2kXb 7u0nl5rPAT7T1qs4Q7TOLNLqkqyyHp0QyF7csAIM5aeJXgKeuxWG7mOUn2cXMCceC3aODBv9CXsXi FYX8t03jqd9OcDKPP82GRCpXKfW9lrlUkfJ9me985KI78Li+8zNr7edGjo0izgaadFYzBLO9nIbAw VaSzhzLw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uM02r-00000006wwi-02o6; Mon, 02 Jun 2025 07:57:21 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uM022-00000006wse-1zUV for barebox@lists.infradead.org; Mon, 02 Jun 2025 07:56:31 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uM021-00015X-4d; Mon, 02 Jun 2025 09:56:29 +0200 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uM020-001Pv0-36; Mon, 02 Jun 2025 09:56:28 +0200 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1uM020-003W3i-2t; Mon, 02 Jun 2025 09:56:28 +0200 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum In-Reply-To: <20250528154508.639789-1-a.fatoum@pengutronix.de> References: <20250528154508.639789-1-a.fatoum@pengutronix.de> Message-Id: <174885098889.838192.2206279812248323341.b4-ty@pengutronix.de> Date: Mon, 02 Jun 2025 09:56:28 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250602_005630_516566_A926A7C8 X-CRM114-Status: UNSURE ( 9.03 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.3 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2] net: phy: seed PRNG when PHY comes up and when generating MAC address X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Wed, 28 May 2025 17:45:08 +0200, Ahmad Fatoum wrote: > The new Xorshift* RNG is seeded only from the cycle counter at startup, > which is much less entropy for the MAC address generation use case, > which used the nanosecond timestamp at generation time before the switch > to Xorshift*. > > The nice thing about our new PRNG implementation is that we can call > srand_xor multiple times to keep adding entropy, so let's do that after > each PHY link up and prior to generating the MAC address. > > [...] Applied, thanks! [1/1] net: phy: seed PRNG when PHY comes up and when generating MAC address https://git.pengutronix.de/cgit/barebox/commit/?id=a9f987772af7 (link may not be stable) Best regards, -- Sascha Hauer