ba6096d04b
OpenWRT's developer guide prefers having actual patches so they an be sent upstream more easily. However, in this case, Adding proper fields also allows for `git am` to properly function. Some of these patches are quite old, and lack much traceable history. This commit tries to rectify that, by digging in the history to find where and how it was first added. It is by no means perfect and also shows some patches that should have been long gone. Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
113 lines
2.8 KiB
Diff
113 lines
2.8 KiB
Diff
From: Yousong Zhou <yszhou4tech@gmail.com>
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Subject: [PATCH] ath79: add nvmem cell mac-address-ascii support
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This is needed for devices with mac address stored in ascii format, e.g.
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HiWiFi HC6361 to be ported in the following patch.
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Submitted-by: Yousong Zhou <yszhou4tech@gmail.com>
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---
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net/ethernet/eth.c | 83 ++++++++++++------
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1 files changed, 72 insertions(+), 11 deletions(-)
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--- a/net/ethernet/eth.c
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+++ b/net/ethernet/eth.c
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@@ -544,6 +544,63 @@ int eth_platform_get_mac_address(struct
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}
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EXPORT_SYMBOL(eth_platform_get_mac_address);
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+static void *nvmem_cell_get_mac_address(struct nvmem_cell *cell)
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+{
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+ size_t len;
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+ void *mac;
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+
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+ mac = nvmem_cell_read(cell, &len);
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+ if (IS_ERR(mac))
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+ return PTR_ERR(mac);
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+ if (len != ETH_ALEN) {
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+ kfree(mac);
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+ return ERR_PTR(-EINVAL);
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+ }
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+ return mac;
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+}
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+
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+static void *nvmem_cell_get_mac_address_ascii(struct nvmem_cell *cell)
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+{
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+ size_t len;
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+ int ret;
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+ void *mac_ascii;
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+ u8 *mac;
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+
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+ mac_ascii = nvmem_cell_read(cell, &len);
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+ if (IS_ERR(mac_ascii))
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+ return PTR_ERR(mac_ascii);
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+ if (len != ETH_ALEN*2+5) {
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+ kfree(mac_ascii);
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+ return ERR_PTR(-EINVAL);
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+ }
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+ mac = kmalloc(ETH_ALEN, GFP_KERNEL);
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+ if (!mac) {
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+ kfree(mac_ascii);
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+ return ERR_PTR(-ENOMEM);
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+ }
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+ ret = sscanf(mac_ascii, "%2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx",
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+ &mac[0], &mac[1], &mac[2],
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+ &mac[3], &mac[4], &mac[5]);
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+ kfree(mac_ascii);
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+ if (ret == ETH_ALEN)
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+ return mac;
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+ kfree(mac);
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+ return ERR_PTR(-EINVAL);
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+}
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+
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+static struct nvmem_cell_mac_address_property {
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+ char *name;
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+ void *(*read)(struct nvmem_cell *);
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+} nvmem_cell_mac_address_properties[] = {
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+ {
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+ .name = "mac-address",
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+ .read = nvmem_cell_get_mac_address,
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+ }, {
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+ .name = "mac-address-ascii",
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+ .read = nvmem_cell_get_mac_address_ascii,
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+ },
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+};
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+
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/**
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* nvmem_get_mac_address - Obtain the MAC address from an nvmem cell named
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* 'mac-address' associated with given device.
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@@ -557,19 +614,23 @@ int nvmem_get_mac_address(struct device
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{
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struct nvmem_cell *cell;
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const void *mac;
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- size_t len;
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+ struct nvmem_cell_mac_address_property *property;
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+ int i;
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- cell = nvmem_cell_get(dev, "mac-address");
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- if (IS_ERR(cell))
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- return PTR_ERR(cell);
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-
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- mac = nvmem_cell_read(cell, &len);
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- nvmem_cell_put(cell);
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-
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- if (IS_ERR(mac))
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- return PTR_ERR(mac);
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+ for (i = 0; i < ARRAY_SIZE(nvmem_cell_mac_address_properties); i++) {
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+ property = &nvmem_cell_mac_address_properties[i];
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+ cell = nvmem_cell_get(dev, property->name);
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+ if (IS_ERR(cell)) {
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+ if (i == ARRAY_SIZE(nvmem_cell_mac_address_properties) - 1)
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+ return PTR_ERR(cell);
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+ continue;
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+ }
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+ mac = property->read(cell);
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+ nvmem_cell_put(cell);
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+ break;
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+ }
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- if (len != ETH_ALEN || !is_valid_ether_addr(mac)) {
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+ if (!is_valid_ether_addr(mac)) {
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kfree(mac);
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return -EINVAL;
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}
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