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(unknown [IPv6:2a02:810b:4340:43bf:fa59:71ff:fe9b:b851]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id 4FBF3223F6; Tue, 28 Dec 2021 15:26:17 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1640701577; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DvU9qr8AVDqwLiuTpAxXwhFvaaqgNiy89x8GquK/9Ww=; b=FrhGUJb9CsrE8BDVdbOUK1k1a21Gt2cjj+pkWleFEwpBSX5l+i5yX+WjELwD2uOPEMlL+z hWFPxMUeDxcnTe5ax+kaqTtpKZaMip88/BZdlMwmIqRk8Zz6VUXBAX/vbWQs6v7EAgcn4s i5vOOtgxg9roeJO3TufPptsun+fo3YI= From: Michael Walle To: linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org Cc: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Rob Herring , Srinivas Kandagatla , Shawn Guo , Li Yang , Frank Rowand , "David S . Miller" , Jakub Kicinski , Ansuel Smith , Andrew Lunn , Michael Walle Subject: [PATCH 5/8] net: add helper eth_addr_add() Date: Tue, 28 Dec 2021 15:25:46 +0100 Message-Id: <20211228142549.1275412-6-michael@walle.cc> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211228142549.1275412-1-michael@walle.cc> References: <20211228142549.1275412-1-michael@walle.cc> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211228_062625_755508_BFE9C23A X-CRM114-Status: GOOD ( 10.23 ) X-Spam-Score: -2.5 (--) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Add a helper to add an offset to a ethernet address. This comes in handy if you have a base ethernet address for multiple interfaces. Signed-off-by: Michael Walle --- include/linux/etherdevice.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) Content analysis details: (-2.5 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [2a01:4f8:151:8464:0:0:1:2 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Add a helper to add an offset to a ethernet address. This comes in handy if you have a base ethernet address for multiple interfaces. Signed-off-by: Michael Walle --- include/linux/etherdevice.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index 2ad71cc90b37..9d621dc85290 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -486,6 +486,20 @@ static inline void eth_addr_inc(u8 *addr) u64_to_ether_addr(u, addr); } +/** + * eth_addr_add() - Add (or subtract) and offset to/from the given MAC address. + * + * @offset: Offset to add. + * @addr: Pointer to a six-byte array containing Ethernet address to increment. + */ +static inline void eth_addr_add(u8 *addr, long offset) +{ + u64 u = ether_addr_to_u64(addr); + + u += offset; + u64_to_ether_addr(u, addr); +} + /** * is_etherdev_addr - Tell if given Ethernet address belongs to the device. * @dev: Pointer to a device structure