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Date: Wed, 6 Oct 2021 08:44:21 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, gregkh@...uxfoundation.org,
rafael@...nel.org, saravanak@...gle.com, mw@...ihalf.com,
andrew@...n.ch, jeremy.linton@....com, hkallweit1@...il.com,
linux@...linux.org.uk, robh+dt@...nel.org, frowand.list@...il.com,
heikki.krogerus@...ux.intel.com, devicetree@...r.kernel.org,
Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next v2 4/9] device property: move mac addr helpers to eth.c
Move the mac address helpers out, eth.c already contains
a bunch of similar helpers.
Suggested-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
v2: new patch
---
drivers/base/property.c | 63 -------------------------------------
include/linux/etherdevice.h | 6 ++++
include/linux/property.h | 4 ---
net/ethernet/eth.c | 63 +++++++++++++++++++++++++++++++++++++
4 files changed, 69 insertions(+), 67 deletions(-)
diff --git a/drivers/base/property.c b/drivers/base/property.c
index 453918eb7390..f1f35b48ab8b 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -15,7 +15,6 @@
#include <linux/of_graph.h>
#include <linux/of_irq.h>
#include <linux/property.h>
-#include <linux/etherdevice.h>
#include <linux/phy.h>
struct fwnode_handle *dev_fwnode(struct device *dev)
@@ -935,68 +934,6 @@ int device_get_phy_mode(struct device *dev)
}
EXPORT_SYMBOL_GPL(device_get_phy_mode);
-static void *fwnode_get_mac_addr(struct fwnode_handle *fwnode,
- const char *name, char *addr,
- int alen)
-{
- int ret = fwnode_property_read_u8_array(fwnode, name, addr, alen);
-
- if (ret == 0 && alen == ETH_ALEN && is_valid_ether_addr(addr))
- return addr;
- return NULL;
-}
-
-/**
- * fwnode_get_mac_address - Get the MAC from the firmware node
- * @fwnode: Pointer to the firmware node
- * @addr: Address of buffer to store the MAC in
- * @alen: Length of the buffer pointed to by addr, should be ETH_ALEN
- *
- * Search the firmware node for the best MAC address to use. 'mac-address' is
- * checked first, because that is supposed to contain to "most recent" MAC
- * address. If that isn't set, then 'local-mac-address' is checked next,
- * because that is the default address. If that isn't set, then the obsolete
- * 'address' is checked, just in case we're using an old device tree.
- *
- * Note that the 'address' property is supposed to contain a virtual address of
- * the register set, but some DTS files have redefined that property to be the
- * MAC address.
- *
- * All-zero MAC addresses are rejected, because those could be properties that
- * exist in the firmware tables, but were not updated by the firmware. For
- * example, the DTS could define 'mac-address' and 'local-mac-address', with
- * zero MAC addresses. Some older U-Boots only initialized 'local-mac-address'.
- * In this case, the real MAC is in 'local-mac-address', and 'mac-address'
- * exists but is all zeros.
-*/
-void *fwnode_get_mac_address(struct fwnode_handle *fwnode, char *addr, int alen)
-{
- char *res;
-
- res = fwnode_get_mac_addr(fwnode, "mac-address", addr, alen);
- if (res)
- return res;
-
- res = fwnode_get_mac_addr(fwnode, "local-mac-address", addr, alen);
- if (res)
- return res;
-
- return fwnode_get_mac_addr(fwnode, "address", addr, alen);
-}
-EXPORT_SYMBOL(fwnode_get_mac_address);
-
-/**
- * device_get_mac_address - Get the MAC for a given device
- * @dev: Pointer to the device
- * @addr: Address of buffer to store the MAC in
- * @alen: Length of the buffer pointed to by addr, should be ETH_ALEN
- */
-void *device_get_mac_address(struct device *dev, char *addr, int alen)
-{
- return fwnode_get_mac_address(dev_fwnode(dev), addr, alen);
-}
-EXPORT_SYMBOL(device_get_mac_address);
-
/**
* fwnode_irq_get - Get IRQ directly from a fwnode
* @fwnode: Pointer to the firmware node
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index c8442d954d19..b3b6591d84c6 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -26,9 +26,15 @@
#ifdef __KERNEL__
struct device;
+struct fwnode_handle;
+
int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr);
unsigned char *arch_get_platform_mac_address(void);
int nvmem_get_mac_address(struct device *dev, void *addrbuf);
+void *device_get_mac_address(struct device *dev, char *addr, int alen);
+void *fwnode_get_mac_address(struct fwnode_handle *fwnode,
+ char *addr, int alen);
+
u32 eth_get_headlen(const struct net_device *dev, const void *data, u32 len);
__be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev);
extern const struct header_ops eth_header_ops;
diff --git a/include/linux/property.h b/include/linux/property.h
index 357513a977e5..4fb081684255 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -389,11 +389,7 @@ const void *device_get_match_data(struct device *dev);
int device_get_phy_mode(struct device *dev);
-void *device_get_mac_address(struct device *dev, char *addr, int alen);
-
int fwnode_get_phy_mode(struct fwnode_handle *fwnode);
-void *fwnode_get_mac_address(struct fwnode_handle *fwnode,
- char *addr, int alen);
struct fwnode_handle *fwnode_graph_get_next_endpoint(
const struct fwnode_handle *fwnode, struct fwnode_handle *prev);
struct fwnode_handle *
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index b57530c231a6..9ea45aae04ee 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -51,6 +51,7 @@
#include <linux/if_ether.h>
#include <linux/of_net.h>
#include <linux/pci.h>
+#include <linux/property.h>
#include <net/dst.h>
#include <net/arp.h>
#include <net/sock.h>
@@ -558,3 +559,65 @@ int nvmem_get_mac_address(struct device *dev, void *addrbuf)
return 0;
}
EXPORT_SYMBOL(nvmem_get_mac_address);
+
+static void *fwnode_get_mac_addr(struct fwnode_handle *fwnode,
+ const char *name, char *addr,
+ int alen)
+{
+ int ret = fwnode_property_read_u8_array(fwnode, name, addr, alen);
+
+ if (ret == 0 && alen == ETH_ALEN && is_valid_ether_addr(addr))
+ return addr;
+ return NULL;
+}
+
+/**
+ * fwnode_get_mac_address - Get the MAC from the firmware node
+ * @fwnode: Pointer to the firmware node
+ * @addr: Address of buffer to store the MAC in
+ * @alen: Length of the buffer pointed to by addr, should be ETH_ALEN
+ *
+ * Search the firmware node for the best MAC address to use. 'mac-address' is
+ * checked first, because that is supposed to contain to "most recent" MAC
+ * address. If that isn't set, then 'local-mac-address' is checked next,
+ * because that is the default address. If that isn't set, then the obsolete
+ * 'address' is checked, just in case we're using an old device tree.
+ *
+ * Note that the 'address' property is supposed to contain a virtual address of
+ * the register set, but some DTS files have redefined that property to be the
+ * MAC address.
+ *
+ * All-zero MAC addresses are rejected, because those could be properties that
+ * exist in the firmware tables, but were not updated by the firmware. For
+ * example, the DTS could define 'mac-address' and 'local-mac-address', with
+ * zero MAC addresses. Some older U-Boots only initialized 'local-mac-address'.
+ * In this case, the real MAC is in 'local-mac-address', and 'mac-address'
+ * exists but is all zeros.
+ */
+void *fwnode_get_mac_address(struct fwnode_handle *fwnode, char *addr, int alen)
+{
+ char *res;
+
+ res = fwnode_get_mac_addr(fwnode, "mac-address", addr, alen);
+ if (res)
+ return res;
+
+ res = fwnode_get_mac_addr(fwnode, "local-mac-address", addr, alen);
+ if (res)
+ return res;
+
+ return fwnode_get_mac_addr(fwnode, "address", addr, alen);
+}
+EXPORT_SYMBOL(fwnode_get_mac_address);
+
+/**
+ * device_get_mac_address - Get the MAC for a given device
+ * @dev: Pointer to the device
+ * @addr: Address of buffer to store the MAC in
+ * @alen: Length of the buffer pointed to by addr, should be ETH_ALEN
+ */
+void *device_get_mac_address(struct device *dev, char *addr, int alen)
+{
+ return fwnode_get_mac_address(dev_fwnode(dev), addr, alen);
+}
+EXPORT_SYMBOL(device_get_mac_address);
--
2.31.1
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