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authorRafał Miłecki <rafal@milecki.pl>2023-02-23 11:34:32 +0100
committerRafał Miłecki <rafal@milecki.pl>2023-03-21 06:16:50 +0100
commite026a65af167699f0b86a31eb2b361a78dbe8b8b (patch)
tree37357daf2eb0285c5a3e600fb5a3f5f42a39367b /target/linux/generic/backport-5.10
parentd52870125d57d39e73e6c305dd36fad44fe4a773 (diff)
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kernel: backport eth_addr_add()
It's required by upcoming NVMEM layout drivers. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'target/linux/generic/backport-5.10')
-rw-r--r--target/linux/generic/backport-5.10/632-v6.3-net-add-helper-eth_addr_add.patch41
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.10/632-v6.3-net-add-helper-eth_addr_add.patch b/target/linux/generic/backport-5.10/632-v6.3-net-add-helper-eth_addr_add.patch
new file mode 100644
index 0000000000..ac556e53af
--- /dev/null
+++ b/target/linux/generic/backport-5.10/632-v6.3-net-add-helper-eth_addr_add.patch
@@ -0,0 +1,41 @@
+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