net/eui_provider: provide index to the callback function

If the same callback function is used for multiple interfaces
(`NETDEV_INDEX_ANY`), it is necessary to also provide the index of
the interface to hand out and address.

boards/avr-rss2/include/board.h

@@ -41,8 +41,10 @@ extern "C" {
 /**
  * @brief    AT24Mac provides a EUI-64, this is also printed on the board
  */
-static inline int _at24mac_get_eui64(const void *arg, eui64_t *addr)
+static inline int _at24mac_get_eui64(const void *arg, eui64_t *addr, uint8_t index)
 {
+    (void) index;
+
     return at24mac_get_eui64((uintptr_t)arg, addr);
 }
 

boards/derfmega256/include/board.h

@@ -37,9 +37,10 @@ extern "C" {
 /**
  * @brief    Constant in EEPROM provides a EUI-64, this is also printed on the board
  */
-static inline int _eeprom_mac_get_eui64(const void *arg, eui64_t *addr)
+static inline int _eeprom_mac_get_eui64(const void *arg, eui64_t *addr, uint8_t index)
 {
     (void) arg;
+    (void) index;
 
     if (eeprom_read(EEPROM_MAC_ADDR, addr, sizeof(eui64_t)) != sizeof(eui64_t)) {
         return -1;

boards/same54-xpro/include/board.h

@@ -48,8 +48,10 @@ extern "C" {
 /**
  * @brief    AT24Mac provides a EUI-48
  */
-static inline int _at24mac_get_eui48(const void *arg, eui48_t *addr)
+static inline int _at24mac_get_eui48(const void *arg, eui48_t *addr, uint8_t index)
 {
+    (void) index;
+
     return at24mac_get_eui48((uintptr_t)arg, addr);
 }
 

boards/samr21-xpro/include/board.h

@@ -62,9 +62,10 @@ extern "C" {
 /**
  * @brief    EDBG provides a EUI-64, the same that is printed on the board
  */
-static inline int _edbg_get_eui64(const void *arg, eui64_t *addr)
+static inline int _edbg_get_eui64(const void *arg, eui64_t *addr, uint8_t index)
 {
     (void) arg;
+    (void) index;
 
     /* EDBG can take a while to respond on cold boot */
     unsigned tries = 10000;

cpu/cc2538/include/cc2538_eui_primary.h

@@ -33,12 +33,14 @@ extern "C" {
  *
  * @param arg       unused
  * @param[out] addr The EUI-64
+ * @param index     unused
  *
  * @return  0
  */
-static inline int cc2538_get_eui64_primary(const void *arg, eui64_t *addr)
+static inline int cc2538_get_eui64_primary(const void *arg, eui64_t *addr, uint8_t index)
 {
     (void) arg;
+    (void) index;
 
     /*
      * The primary EUI-64 seems to be written to memory in a non-sequential

sys/include/net/eui_provider.h

@@ -108,24 +108,26 @@ extern "C" {
  *
  * @param[in]   arg     Optional argument provided by eui48_conf_t
  * @param[out]  addr    Destination pointer for the EUI-48 address
+ * @param[in]   index   index of the netdev
  *
  * @return      0 on success, next provider in eui48_conf_t will be
  *              used otherwise.
  *              Will fall back to @see luid_get_eui48 eventually.
  */
-typedef int (*netdev_get_eui48_cb_t)(const void *arg, eui48_t *addr);
+typedef int (*netdev_get_eui48_cb_t)(const void *arg, eui48_t *addr, uint8_t index);
 
 /**
  * @brief   Function for providing a EUI-64 to a device
  *
  * @param[in]   arg     Optional argument provided by eui64_conf_t
  * @param[out]  addr    Destination pointer for the EUI-64 address
+ * @param[in]   index   index of the netdev
  *
  * @return      0 on success, next provider in eui64_conf_t will be
  *              used otherwise.
  *              Will fall back to @see luid_get_eui64 eventually.
  */
-typedef int (*netdev_get_eui64_cb_t)(const void *arg, eui64_t *addr);
+typedef int (*netdev_get_eui64_cb_t)(const void *arg, eui64_t *addr, uint8_t index);
 
 /**
  * @brief Structure to hold providers for EUI-48 addresses

sys/net/link_layer/eui_provider/eui_provider.c

@@ -35,7 +35,7 @@ void netdev_eui48_get(netdev_t *netdev, eui48_t *addr)
 #else
         (void) netdev;
 #endif
-        if (eui48_conf[i].provider(eui48_conf[i].arg, addr) == 0) {
+        if (eui48_conf[i].provider(eui48_conf[i].arg, addr, i) == 0) {
             return;
         }
     }
@@ -60,7 +60,7 @@ void netdev_eui64_get(netdev_t *netdev, eui64_t *addr)
 #else
         (void) netdev;
 #endif
-        if (eui64_conf[i].provider(eui64_conf[i].arg, addr) == 0) {
+        if (eui64_conf[i].provider(eui64_conf[i].arg, addr, i) == 0) {
             return;
         }
     }