From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 26 Nov 2024 16:18:14 +0100 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 1tFxKP-000fOL-2F for lore@lore.pengutronix.de; Tue, 26 Nov 2024 16:18:14 +0100 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 1tFxKP-0004H2-It for lore@pengutronix.de; Tue, 26 Nov 2024 16:18:14 +0100 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: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=yUgR7N0Nxwx2dILDm7sFIdWOHazYHeomD+MqiAxyq7E=; b=gv8kUHVL11bVRwu3CTz1+aSQir TM30jDZUDICeZbyjOuMe0R748P5d9LnqnhNVGj9sCSJN8/89bN9L9fvvv0cXBOB0G4FdmxIlKI3bE wi1jj4+hBkdUefdS5OUy1EEFj5LHbsNed+zNhjQEfzw28Yu4pULTmUOYdsoLdZH0ZpM/A1dnTRvPs np/Y7wCtKxMCu0nMkcKFD1ElCKSr2iLJQ1aL0UovevHSB/s8mEmd+s+l67FVeDpcsS+zGQFheYyxZ zUMIFDYyKP3x4U6KIauMTzVXydoBQj1m65n5KOUPRvibTG70EK9gEiYZ0RT2k9xxsuVihoaLesAir tiZX6tHw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tFxK2-0000000AyS4-0Gd1; Tue, 26 Nov 2024 15:17:50 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tFxJy-0000000AyPs-3hal for barebox@lists.infradead.org; Tue, 26 Nov 2024 15:17:48 +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 1tFxJx-0003vB-FM; Tue, 26 Nov 2024 16:17:45 +0100 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) 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 1tFxJw-000Grl-1c; Tue, 26 Nov 2024 16:17:45 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tFxJw-00FD3f-1q; Tue, 26 Nov 2024 16:17:45 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Tue, 26 Nov 2024 16:17:41 +0100 Message-Id: <20241126151744.3621717-2-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20241126151744.3621717-1-a.fatoum@pengutronix.de> References: <20241126151744.3621717-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241126_071746_913973_8D763C96 X-CRM114-Status: UNSURE ( 9.79 ) 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=-5.2 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: [PATCH 1/4] net: add ethaddr sequence handling 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) Instead of storing every MAC address in full, boards may elect to store a base address and increment it N times. Add a helper to iterate over such an Ethernet address sequence. Example usage: const u8 *eth_addr; u8 eth_base[ETH_ALEN] = "\x00\x01\x02\x03\x04\x05"; int i = 0, eth_count = 4; for_each_seq_ethaddr(eth_addr, eth_base, ð_count) eth_register_ethaddr(i++, eth_addr); Signed-off-by: Ahmad Fatoum --- include/net.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/net.h b/include/net.h index a04ed5b0ab92..1b6995b50043 100644 --- a/include/net.h +++ b/include/net.h @@ -516,6 +516,18 @@ static inline void eth_addr_add(u8 *addr, long offset) u64_to_ether_addr(u, addr); } +#define for_each_seq_ethaddr(eth_addr, eth_base, eth_count) \ + for (eth_addr = *eth_count ? eth_base : NULL; eth_addr; eth_addr = eth_addr_seq_next(eth_base, eth_count)) + +static inline const u8 *eth_addr_seq_next(u8 eth_base[6], unsigned *eth_count) +{ + if (--(*eth_count) <= 0) + return NULL; + + eth_addr_inc(eth_base); + return eth_base; +} + typedef void rx_handler_f(void *ctx, char *packet, unsigned int len); struct eth_device *eth_get_byname(const char *name); -- 2.39.5