From: David Bauer Date: Wed, 28 Jul 2021 22:29:53 +0000 (+0200) Subject: generic: write back netdev MAC-address to device-tree X-Git-Tag: v22.03.0-rc1~2076 X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=cd39aba402ea7e7a11e173b0b5aa96e42bf1f2ac;p=openwrt%2Fstaging%2Fhauke.git generic: write back netdev MAC-address to device-tree The label-mac logic relies on the mac-address property of a netdev devices of-node. However, the mac address can also be stored as a different property or read from e.g. an mtd device. Create this node when reading a mac-address from OF if it does not already exist and copy the mac-address used for the device to this property. This way, the MAC address can be accessed using procfs. Signed-off-by: David Bauer --- diff --git a/target/linux/generic/pending-5.10/681-NET-add-mtd-mac-address-support-to-of_get_mac_addres.patch b/target/linux/generic/pending-5.10/681-NET-add-mtd-mac-address-support-to-of_get_mac_addres.patch index 9e16564953..7d2267eb29 100644 --- a/target/linux/generic/pending-5.10/681-NET-add-mtd-mac-address-support-to-of_get_mac_addres.patch +++ b/target/linux/generic/pending-5.10/681-NET-add-mtd-mac-address-support-to-of_get_mac_addres.patch @@ -34,13 +34,14 @@ Signed-off-by: Ansuel Smith { struct property *pp = of_find_property(np, name, NULL); -@@ -78,6 +79,70 @@ static const void *of_get_mac_addr_nvmem +@@ -78,6 +79,55 @@ static const void *of_get_mac_addr_nvmem return mac; } +static const void *of_get_mac_address_mtd(struct device_node *np) +{ +#ifdef CONFIG_MTD ++ struct platform_device *pdev = of_find_device_by_node(np); + struct device_node *mtd_np = NULL; + struct property *prop; + size_t retlen; @@ -77,46 +78,30 @@ Signed-off-by: Ansuel Smith + if (!is_valid_ether_addr(mac)) + return NULL; + -+ addr = of_get_mac_addr(np, "mac-address"); -+ if (addr) { -+ memcpy(addr, mac, ETH_ALEN); -+ return addr; -+ } -+ -+ prop = kzalloc(sizeof(*prop), GFP_KERNEL); -+ if (!prop) -+ return NULL; -+ -+ prop->name = "mac-address"; -+ prop->length = ETH_ALEN; -+ prop->value = kmemdup(mac, ETH_ALEN, GFP_KERNEL); -+ if (!prop->value || of_add_property(np, prop)) -+ goto free; ++ addr = devm_kmemdup(&pdev->dev, mac, ETH_ALEN, GFP_KERNEL); ++ if (!addr) ++ return ERR_PTR(-ENOMEM); + -+ return prop->value; -+free: -+ kfree(prop->value); -+ kfree(prop); ++ return addr; +#endif -+ return NULL; +} + + /** * Search the device tree for the best MAC address to use. 'mac-address' is * checked first, because that is supposed to contain to "most recent" MAC -@@ -98,6 +163,10 @@ static const void *of_get_mac_addr_nvmem +@@ -98,6 +148,10 @@ static const void *of_get_mac_addr_nvmem * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists * but is all zeros. * + * + * If a mtd-mac-address property exists, try to fetch the MAC address from the -+ * specified mtd device, and store it as a 'mac-address' property ++ * specified mtd device. + * * Return: Will be a valid pointer on success and ERR_PTR in case of error. */ const void *of_get_mac_address(struct device_node *np) -@@ -116,6 +185,10 @@ const void *of_get_mac_address(struct de +@@ -116,6 +170,10 @@ const void *of_get_mac_address(struct de if (addr) return addr; diff --git a/target/linux/generic/pending-5.10/682-of_net-add-mac-address-increment-support.patch b/target/linux/generic/pending-5.10/682-of_net-add-mac-address-increment-support.patch index 0776d7bccc..9032b9186c 100644 --- a/target/linux/generic/pending-5.10/682-of_net-add-mac-address-increment-support.patch +++ b/target/linux/generic/pending-5.10/682-of_net-add-mac-address-increment-support.patch @@ -64,10 +64,10 @@ Signed-off-by: Ansuel Smith +static void *of_get_mac_address_mtd(struct device_node *np) { #ifdef CONFIG_MTD - struct device_node *mtd_np = NULL; -@@ -167,28 +172,54 @@ free: + struct platform_device *pdev = of_find_device_by_node(np); +@@ -152,28 +157,54 @@ static const void *of_get_mac_address_mt * If a mtd-mac-address property exists, try to fetch the MAC address from the - * specified mtd device, and store it as a 'mac-address' property + * specified mtd device. * + * DT can tell the system to increment the mac-address after is extracted by + * using: diff --git a/target/linux/generic/pending-5.10/683-of_net-add-mac-address-to-of-tree.patch b/target/linux/generic/pending-5.10/683-of_net-add-mac-address-to-of-tree.patch new file mode 100644 index 0000000000..3e331bac63 --- /dev/null +++ b/target/linux/generic/pending-5.10/683-of_net-add-mac-address-to-of-tree.patch @@ -0,0 +1,44 @@ +--- a/drivers/of/of_net.c ++++ b/drivers/of/of_net.c +@@ -132,6 +132,33 @@ static void *of_get_mac_address_mtd(stru + #endif + } + ++static int of_add_mac_address(struct device_node *np, u8* addr) ++{ ++ struct property *prop; ++ u8 *np_addr; ++ ++ np_addr = of_get_mac_addr(np, "mac-address"); ++ if (np_addr) { ++ memcpy(np_addr, addr, ETH_ALEN); ++ return 0; ++ } ++ ++ prop = kzalloc(sizeof(*prop), GFP_KERNEL); ++ if (!prop) ++ return 0; ++ ++ prop->name = "mac-address"; ++ prop->length = ETH_ALEN; ++ prop->value = kmemdup(addr, ETH_ALEN, GFP_KERNEL); ++ if (!prop->value || of_add_property(np, prop)) ++ goto free; ++ ++ return 0; ++free: ++ kfree(prop->value); ++ kfree(prop); ++ return -ENOMEM; ++} + + /** + * Search the device tree for the best MAC address to use. 'mac-address' is +@@ -205,6 +232,7 @@ found: + if (!of_property_read_u32(np, "mac-address-increment", &mac_inc)) + addr[inc_idx] += mac_inc; + ++ of_add_mac_address(np, addr); + return addr; + } + EXPORT_SYMBOL(of_get_mac_address); diff --git a/target/linux/generic/pending-5.4/681-NET-add-mtd-mac-address-support-to-of_get_mac_addres.patch b/target/linux/generic/pending-5.4/681-NET-add-mtd-mac-address-support-to-of_get_mac_addres.patch index 01f940dec7..b6ac24abcd 100644 --- a/target/linux/generic/pending-5.4/681-NET-add-mtd-mac-address-support-to-of_get_mac_addres.patch +++ b/target/linux/generic/pending-5.4/681-NET-add-mtd-mac-address-support-to-of_get_mac_addres.patch @@ -34,13 +34,14 @@ Signed-off-by: Ansuel Smith { struct property *pp = of_find_property(np, name, NULL); -@@ -72,6 +73,70 @@ static const void *of_get_mac_addr_nvmem +@@ -72,6 +73,55 @@ static const void *of_get_mac_addr_nvmem return mac; } +static const void *of_get_mac_address_mtd(struct device_node *np) +{ +#ifdef CONFIG_MTD ++ struct platform_device *pdev = of_find_device_by_node(np); + struct device_node *mtd_np = NULL; + struct property *prop; + size_t retlen; @@ -77,46 +78,30 @@ Signed-off-by: Ansuel Smith + if (!is_valid_ether_addr(mac)) + return NULL; + -+ addr = of_get_mac_addr(np, "mac-address"); -+ if (addr) { -+ memcpy(addr, mac, ETH_ALEN); -+ return addr; -+ } -+ -+ prop = kzalloc(sizeof(*prop), GFP_KERNEL); -+ if (!prop) -+ return NULL; -+ -+ prop->name = "mac-address"; -+ prop->length = ETH_ALEN; -+ prop->value = kmemdup(mac, ETH_ALEN, GFP_KERNEL); -+ if (!prop->value || of_add_property(np, prop)) -+ goto free; ++ addr = devm_kmemdup(&pdev->dev, mac, ETH_ALEN, GFP_KERNEL); ++ if (!addr) ++ return ERR_PTR(-ENOMEM); + -+ return prop->value; -+free: -+ kfree(prop->value); -+ kfree(prop); ++ return addr; +#endif -+ return NULL; +} + + /** * Search the device tree for the best MAC address to use. 'mac-address' is * checked first, because that is supposed to contain to "most recent" MAC -@@ -92,6 +157,10 @@ static const void *of_get_mac_addr_nvmem +@@ -92,6 +142,10 @@ static const void *of_get_mac_addr_nvmem * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists * but is all zeros. * + * + * If a mtd-mac-address property exists, try to fetch the MAC address from the -+ * specified mtd device, and store it as a 'mac-address' property ++ * specified mtd device. + * * Return: Will be a valid pointer on success and ERR_PTR in case of error. */ const void *of_get_mac_address(struct device_node *np) -@@ -110,6 +179,10 @@ const void *of_get_mac_address(struct de +@@ -110,6 +164,10 @@ const void *of_get_mac_address(struct de if (addr) return addr; diff --git a/target/linux/generic/pending-5.4/682-of_net-add-mac-address-increment-support.patch b/target/linux/generic/pending-5.4/682-of_net-add-mac-address-increment-support.patch index 81f946ff7f..120ef52ff8 100644 --- a/target/linux/generic/pending-5.4/682-of_net-add-mac-address-increment-support.patch +++ b/target/linux/generic/pending-5.4/682-of_net-add-mac-address-increment-support.patch @@ -64,10 +64,10 @@ Signed-off-by: Ansuel Smith +static void *of_get_mac_address_mtd(struct device_node *np) { #ifdef CONFIG_MTD - struct device_node *mtd_np = NULL; -@@ -161,28 +166,54 @@ free: + struct platform_device *pdev = of_find_device_by_node(np); +@@ -146,28 +151,54 @@ static const void *of_get_mac_address_mt * If a mtd-mac-address property exists, try to fetch the MAC address from the - * specified mtd device, and store it as a 'mac-address' property + * specified mtd device. * + * DT can tell the system to increment the mac-address after is extracted by + * using: diff --git a/target/linux/generic/pending-5.4/683-of_net-add-mac-address-to-of-tree.patch b/target/linux/generic/pending-5.4/683-of_net-add-mac-address-to-of-tree.patch new file mode 100644 index 0000000000..706a864070 --- /dev/null +++ b/target/linux/generic/pending-5.4/683-of_net-add-mac-address-to-of-tree.patch @@ -0,0 +1,44 @@ +--- a/drivers/of/of_net.c ++++ b/drivers/of/of_net.c +@@ -125,6 +125,33 @@ static void *of_get_mac_address_mtd(stru + #endif + } + ++static int of_add_mac_address(struct device_node *np, u8* addr) ++{ ++ struct property *prop; ++ u8 *np_addr; ++ ++ np_addr = of_get_mac_addr(np, "mac-address"); ++ if (np_addr) { ++ memcpy(np_addr, addr, ETH_ALEN); ++ return 0; ++ } ++ ++ prop = kzalloc(sizeof(*prop), GFP_KERNEL); ++ if (!prop) ++ return 0; ++ ++ prop->name = "mac-address"; ++ prop->length = ETH_ALEN; ++ prop->value = kmemdup(addr, ETH_ALEN, GFP_KERNEL); ++ if (!prop->value || of_add_property(np, prop)) ++ goto free; ++ ++ return 0; ++free: ++ kfree(prop->value); ++ kfree(prop); ++ return -ENOMEM; ++} + + /** + * Search the device tree for the best MAC address to use. 'mac-address' is +@@ -198,6 +225,7 @@ found: + if (!of_property_read_u32(np, "mac-address-increment", &mac_inc)) + addr[inc_idx] += mac_inc; + ++ of_add_mac_address(np, addr); + return addr; + } + EXPORT_SYMBOL(of_get_mac_address);