[uml-devel] [PATCH 10/10] UML net: set addr_assign_type if random_ether_addr() used

[Danny Kukawka]

Set addr_assign_type correctly to NET_ADDR_RANDOM in case
a random MAC address was generated and assigned to the netdevice.

Return state from setup_etheraddr() about returning a random
MAC address or not and check this state in eth_configure().

Signed-off-by: Danny Kukawka <danny.kuka...@bisect.de>
---
 arch/um/drivers/net_kern.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index a492e59..d299618 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -293,7 +293,7 @@ static void uml_net_user_timer_expire(unsigned long _conn)
 #endif
 }
 
-static void setup_etheraddr(char *str, unsigned char *addr, char *name)
+static int setup_etheraddr(char *str, unsigned char *addr, char *name)
 {
        char *end;
        int i;
@@ -334,12 +334,13 @@ static void setup_etheraddr(char *str, unsigned char 
*addr, char *name)
                       addr[0] | 0x02, addr[1], addr[2], addr[3], addr[4],
                       addr[5]);
        }
-       return;
+       return 0;
 
 random:
        printk(KERN_INFO
               "Choosing a random ethernet address for device %s\n", name);
        random_ether_addr(addr);
+       return 1;
 }
 
 static DEFINE_SPINLOCK(devices_lock);
@@ -391,6 +392,7 @@ static void eth_configure(int n, void *init, char *mac,
        struct net_device *dev;
        struct uml_net_private *lp;
        int err, size;
+       int random_mac;
 
        size = transport->private_size + sizeof(struct uml_net_private);
 
@@ -417,7 +419,7 @@ static void eth_configure(int n, void *init, char *mac,
         */
        snprintf(dev->name, sizeof(dev->name), "eth%d", n);
 
-       setup_etheraddr(mac, device->mac, dev->name);
+       random_mac = setup_etheraddr(mac, device->mac, dev->name);
 
        printk(KERN_INFO "Netdevice %d (%pM) : ", n, device->mac);
 
@@ -474,6 +476,9 @@ static void eth_configure(int n, void *init, char *mac,
 
        /* don't use eth_mac_addr, it will not work here */
        memcpy(dev->dev_addr, device->mac, ETH_ALEN);
+       if (random_mac)
+               dev->addr_assign_type |= NET_ADDR_RANDOM;
+
        dev->mtu = transport->user->mtu;
        dev->netdev_ops = &uml_netdev_ops;
        dev->ethtool_ops = &uml_net_ethtool_ops;
-- 
1.7.8.3


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