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authorSascha Hauer <s.hauer@pengutronix.de>2013-11-11 12:37:16 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2014-04-04 09:04:31 +0200
commit1273cc2d47c92047835d6a43069207d119725e3c (patch)
treeb9930fe492ed453951ad97c26ddd38d700b0dc79
parent5dcb117e82cb31cbc3afc577ad8654a9d8aad594 (diff)
downloadbarebox-1273cc2d47c92047835d6a43069207d119725e3c.tar.gz
param: Add dev_add_param_mac
This adds a convenience function to register a MAC address device parameter. The only current user is converted to use it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--include/param.h13
-rw-r--r--lib/parameter.c87
-rw-r--r--net/eth.c14
3 files changed, 103 insertions, 11 deletions
diff --git a/include/param.h b/include/param.h
index e8458b5..eac3372 100644
--- a/include/param.h
+++ b/include/param.h
@@ -54,6 +54,11 @@ struct param_d *dev_add_param_ip(struct device_d *dev, const char *name,
int (*get)(struct param_d *p, void *priv),
IPaddr_t *ip, void *priv);
+struct param_d *dev_add_param_mac(struct device_d *dev, const char *name,
+ int (*set)(struct param_d *p, void *priv),
+ int (*get)(struct param_d *p, void *priv),
+ u8 *mac, void *priv);
+
int dev_add_param_fixed(struct device_d *dev, char *name, const char *value);
void dev_remove_param(struct param_d *p);
@@ -126,6 +131,14 @@ static inline struct param_d *dev_add_param_ip(struct device_d *dev, const char
return NULL;
}
+static inline struct param_d *dev_add_param_mac(struct device_d *dev, const char *name,
+ int (*set)(struct param_d *p, void *priv),
+ int (*get)(struct param_d *p, void *priv),
+ u8 *mac, void *priv)
+{
+ return NULL;
+}
+
static inline int dev_add_param_fixed(struct device_d *dev, char *name, char *value)
{
return 0;
diff --git a/lib/parameter.c b/lib/parameter.c
index 9dfde3f..baa2b15 100644
--- a/lib/parameter.c
+++ b/lib/parameter.c
@@ -542,6 +542,93 @@ struct param_d *dev_add_param_ip(struct device_d *dev, const char *name,
return &pi->param;
}
+
+struct param_mac {
+ struct param_d param;
+ char *mac;
+ u8 mac_str[sizeof("xx:xx:xx:xx:xx:xx")];
+ const char *format;
+ int (*set)(struct param_d *p, void *priv);
+ int (*get)(struct param_d *p, void *priv);
+};
+
+int string_to_ethaddr(const char *str, u8 enetaddr[6]);
+void ethaddr_to_string(const u8 enetaddr[6], char *str);
+
+static inline struct param_mac *to_param_mac(struct param_d *p)
+{
+ return container_of(p, struct param_mac, param);
+}
+
+static int param_mac_set(struct device_d *dev, struct param_d *p, const char *val)
+{
+ struct param_mac *pm = to_param_mac(p);
+ char mac_save[6];
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+
+ memcpy(mac_save, pm->mac, 6);
+
+ ret = string_to_ethaddr(val, pm->mac);
+ if (ret)
+ goto out;
+
+ if (!pm->set)
+ return 0;
+
+ ret = pm->set(p, p->driver_priv);
+ if (ret)
+ goto out;
+
+ return 0;
+out:
+ memcpy(pm->mac, mac_save, 6);
+
+ return ret;
+}
+
+static const char *param_mac_get(struct device_d *dev, struct param_d *p)
+{
+ struct param_mac *pm = to_param_mac(p);
+ int ret;
+
+ if (pm->get) {
+ ret = pm->get(p, p->driver_priv);
+ if (ret)
+ return NULL;
+ }
+
+ ethaddr_to_string(pm->mac, p->value);
+
+ return p->value;
+}
+
+struct param_d *dev_add_param_mac(struct device_d *dev, const char *name,
+ int (*set)(struct param_d *p, void *priv),
+ int (*get)(struct param_d *p, void *priv),
+ u8 *mac, void *priv)
+{
+ struct param_mac *pm;
+ int ret;
+
+ pm = xzalloc(sizeof(*pm));
+ pm->mac = mac;
+ pm->set = set;
+ pm->get = get;
+ pm->param.driver_priv = priv;
+ pm->param.value = pm->mac_str;
+
+ ret = __dev_add_param(&pm->param, dev, name,
+ param_mac_set, param_mac_get, 0);
+ if (ret) {
+ free(pm);
+ return ERR_PTR(ret);
+ }
+
+ return &pm->param;
+}
#endif
/**
diff --git a/net/eth.c b/net/eth.c
index 1f48f2d..3ced3cd 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -257,17 +257,9 @@ int eth_rx(void)
return eth_current->recv(eth_current);
}
-static int eth_set_ethaddr(struct device_d *dev, struct param_d *param, const char *val)
+static int eth_set_ethaddr(struct param_d *param, void *priv)
{
- struct eth_device *edev = dev_to_edev(dev);
-
- if (!val)
- return dev_param_set_generic(dev, param, NULL);
-
- if (string_to_ethaddr(val, edev->ethaddr) < 0)
- return -EINVAL;
-
- dev_param_set_generic(dev, param, val);
+ struct eth_device *edev = priv;
edev->set_ethaddr(edev, edev->ethaddr);
@@ -345,7 +337,7 @@ int eth_register(struct eth_device *edev)
dev_add_param_ip(dev, "serverip", NULL, NULL, &edev->serverip, edev);
dev_add_param_ip(dev, "gateway", NULL, NULL, &edev->gateway, edev);
dev_add_param_ip(dev, "netmask", NULL, NULL, &edev->netmask, edev);
- dev_add_param(dev, "ethaddr", eth_set_ethaddr, NULL, 0);
+ dev_add_param_mac(dev, "ethaddr", eth_set_ethaddr, NULL, edev->ethaddr, edev);
if (edev->init)
edev->init(edev);