mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 06:57:57 +00:00
e026a65af1
It's required by upcoming NVMEM layout drivers. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
42 lines
1.4 KiB
Diff
42 lines
1.4 KiB
Diff
From 7390609b0121a1b982c5ecdfcd72dc328e5784ee Mon Sep 17 00:00:00 2001
|
|
From: Michael Walle <michael@walle.cc>
|
|
Date: Mon, 6 Feb 2023 13:43:42 +0000
|
|
Subject: [PATCH] net: add helper eth_addr_add()
|
|
|
|
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 <michael@walle.cc>
|
|
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
|
|
Acked-by: Jakub Kicinski <kuba@kernel.org>
|
|
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
|
|
Link: https://lore.kernel.org/r/20230206134356.839737-9-srinivas.kandagatla@linaro.org
|
|
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
---
|
|
include/linux/etherdevice.h | 14 ++++++++++++++
|
|
1 file changed, 14 insertions(+)
|
|
|
|
--- a/include/linux/etherdevice.h
|
|
+++ b/include/linux/etherdevice.h
|
|
@@ -466,6 +466,20 @@ static inline void eth_addr_inc(u8 *addr
|
|
}
|
|
|
|
/**
|
|
+ * eth_addr_add() - Add (or subtract) an 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
|
|
* @addr: Pointer to a six-byte array containing the Ethernet address
|