183130227/tn3399_openwrt
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ath79: add nvmem cell mac-address-ascii support

Browse Source 
This is needed for devices with mac address stored in ascii format, e.g.
HiWiFi HC6361 to be ported in the following patch.

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
This commit is contained in:
Yousong Zhou 2022-04-08 10:20:08 +00:00
parent 7a256d97d9
commit ecd81de7a5
2 changed files with 206 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

103
target/linux/ath79/patches-5.10/600-of_net-add-mac-address-ascii-support.patch Normal file
View File

@ -0,0 +1,103 @@
Index: linux-5.15.31/net/ethernet/eth.c
===================================================================
--- linux-5.15.31.orig/net/ethernet/eth.c
+++ linux-5.15.31/net/ethernet/eth.c
@@ -544,6 +544,63 @@ int eth_platform_get_mac_address(struct
}
EXPORT_SYMBOL(eth_platform_get_mac_address);
+static void *nvmem_cell_get_mac_address(struct nvmem_cell *cell)
+{
+ size_t len;
+ void *mac;
+
+ mac = nvmem_cell_read(cell, &len);
+ if (IS_ERR(mac))
+ return PTR_ERR(mac);
+ if (len != ETH_ALEN) {
+ kfree(mac);
+ return ERR_PTR(-EINVAL);
+ }
+ return mac;
+}
+
+static void *nvmem_cell_get_mac_address_ascii(struct nvmem_cell *cell)
+{
+ size_t len;
+ int ret;
+ void *mac_ascii;
+ u8 *mac;
+
+ mac_ascii = nvmem_cell_read(cell, &len);
+ if (IS_ERR(mac_ascii))
+ return PTR_ERR(mac_ascii);
+ if (len != ETH_ALEN*2+5) {
+ kfree(mac_ascii);
+ return ERR_PTR(-EINVAL);
+ }
+ mac = kmalloc(ETH_ALEN, GFP_KERNEL);
+ if (!mac) {
+ kfree(mac_ascii);
+ return ERR_PTR(-ENOMEM);
+ }
+ ret = sscanf(mac_ascii, "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx",
+ &mac[0], &mac[1], &mac[2],
+ &mac[3], &mac[4], &mac[5]);
+ kfree(mac_ascii);
+ if (ret == ETH_ALEN)
+ return mac;
+ kfree(mac);
+ return ERR_PTR(-EINVAL);
+}
+
+static struct nvmem_cell_mac_address_property {
+ char *name;
+ void *(*read)(struct nvmem_cell *);
+} nvmem_cell_mac_address_properties[] = {
+ {
+ .name = "mac-address",
+ .read = nvmem_cell_get_mac_address,
+ }, {
+ .name = "mac-address-ascii",
+ .read = nvmem_cell_get_mac_address_ascii,
+ },
+};
+
/**
* nvmem_get_mac_address - Obtain the MAC address from an nvmem cell named
* 'mac-address' associated with given device.
@@ -557,19 +614,23 @@ int nvmem_get_mac_address(struct device
{
struct nvmem_cell *cell;
const void *mac;
- size_t len;
+ struct nvmem_cell_mac_address_property *property;
+ int i;
- cell = nvmem_cell_get(dev, "mac-address");
- if (IS_ERR(cell))
- return PTR_ERR(cell);
-
- mac = nvmem_cell_read(cell, &len);
- nvmem_cell_put(cell);
-
- if (IS_ERR(mac))
- return PTR_ERR(mac);
+ for (i = 0; i < ARRAY_SIZE(nvmem_cell_mac_address_properties); i++) {
+ property = &nvmem_cell_mac_address_properties[i];
+ cell = nvmem_cell_get(dev, property->name);
+ if (IS_ERR(cell)) {
+ if (i == ARRAY_SIZE(nvmem_cell_mac_address_properties) - 1)
+ return PTR_ERR(cell);
+ continue;
+ }
+ mac = property->read(cell);
+ nvmem_cell_put(cell);
+ break;
+ }
- if (len != ETH_ALEN || !is_valid_ether_addr(mac)) {
+ if (!is_valid_ether_addr(mac)) {
kfree(mac);
return -EINVAL;
}

103
target/linux/ath79/patches-5.15/600-of_net-add-mac-address-ascii-support.patch Normal file
View File

@ -0,0 +1,103 @@
Index: linux-5.15.31/net/ethernet/eth.c
===================================================================
--- linux-5.15.31.orig/net/ethernet/eth.c
+++ linux-5.15.31/net/ethernet/eth.c
@@ -544,6 +544,63 @@ int eth_platform_get_mac_address(struct
}
EXPORT_SYMBOL(eth_platform_get_mac_address);
+static void *nvmem_cell_get_mac_address(struct nvmem_cell *cell)
+{
+ size_t len;
+ void *mac;
+
+ mac = nvmem_cell_read(cell, &len);
+ if (IS_ERR(mac))
+ return PTR_ERR(mac);
+ if (len != ETH_ALEN) {
+ kfree(mac);
+ return ERR_PTR(-EINVAL);
+ }
+ return mac;
+}
+
+static void *nvmem_cell_get_mac_address_ascii(struct nvmem_cell *cell)
+{
+ size_t len;
+ int ret;
+ void *mac_ascii;
+ u8 *mac;
+
+ mac_ascii = nvmem_cell_read(cell, &len);
+ if (IS_ERR(mac_ascii))
+ return PTR_ERR(mac_ascii);
+ if (len != ETH_ALEN*2+5) {
+ kfree(mac_ascii);
+ return ERR_PTR(-EINVAL);
+ }
+ mac = kmalloc(ETH_ALEN, GFP_KERNEL);
+ if (!mac) {
+ kfree(mac_ascii);
+ return ERR_PTR(-ENOMEM);
+ }
+ ret = sscanf(mac_ascii, "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx",
+ &mac[0], &mac[1], &mac[2],
+ &mac[3], &mac[4], &mac[5]);
+ kfree(mac_ascii);
+ if (ret == ETH_ALEN)
+ return mac;
+ kfree(mac);
+ return ERR_PTR(-EINVAL);
+}
+
+static struct nvmem_cell_mac_address_property {
+ char *name;
+ void *(*read)(struct nvmem_cell *);
+} nvmem_cell_mac_address_properties[] = {
+ {
+ .name = "mac-address",
+ .read = nvmem_cell_get_mac_address,
+ }, {
+ .name = "mac-address-ascii",
+ .read = nvmem_cell_get_mac_address_ascii,
+ },
+};
+
/**
* nvmem_get_mac_address - Obtain the MAC address from an nvmem cell named
* 'mac-address' associated with given device.
@@ -557,19 +614,23 @@ int nvmem_get_mac_address(struct device
{
struct nvmem_cell *cell;
const void *mac;
- size_t len;
+ struct nvmem_cell_mac_address_property *property;
+ int i;
- cell = nvmem_cell_get(dev, "mac-address");
- if (IS_ERR(cell))
- return PTR_ERR(cell);
-
- mac = nvmem_cell_read(cell, &len);
- nvmem_cell_put(cell);
-
- if (IS_ERR(mac))
- return PTR_ERR(mac);
+ for (i = 0; i < ARRAY_SIZE(nvmem_cell_mac_address_properties); i++) {
+ property = &nvmem_cell_mac_address_properties[i];
+ cell = nvmem_cell_get(dev, property->name);
+ if (IS_ERR(cell)) {
+ if (i == ARRAY_SIZE(nvmem_cell_mac_address_properties) - 1)
+ return PTR_ERR(cell);
+ continue;
+ }
+ mac = property->read(cell);
+ nvmem_cell_put(cell);
+ break;
+ }
- if (len != ETH_ALEN || !is_valid_ether_addr(mac)) {
+ if (!is_valid_ether_addr(mac)) {
kfree(mac);
return -EINVAL;
}