Re: [PATCH] fix up RTM_SETLINK handling

Roland Dreier (roland@topspin.com)
15 Jan 2003 17:24:39 -0800


OK, here's a new version of my RTM_SETLINK fixups. I added a function
call_netdevice_notifiers() instead of making netdev_chain not static.

Thanks,
Roland

include/linux/netdevice.h | 1 +
net/core/dev.c | 12 ++++++++++++
net/core/rtnetlink.c | 17 +++++++++++++++--
3 files changed, 28 insertions(+), 2 deletions(-)

===== include/linux/netdevice.h 1.27 vs edited =====
--- 1.27/include/linux/netdevice.h Tue Jan 7 14:33:37 2003
+++ edited/include/linux/netdevice.h Wed Jan 15 17:07:08 2003
@@ -480,6 +480,7 @@
extern int unregister_netdevice(struct net_device *dev);
extern int register_netdevice_notifier(struct notifier_block *nb);
extern int unregister_netdevice_notifier(struct notifier_block *nb);
+extern int call_netdevice_notifiers(unsigned long val, void *v);
extern int dev_new_index(void);
extern struct net_device *dev_get_by_index(int ifindex);
extern struct net_device *__dev_get_by_index(int ifindex);
===== net/core/dev.c 1.52 vs edited =====
--- 1.52/net/core/dev.c Tue Jan 7 14:33:37 2003
+++ edited/net/core/dev.c Wed Jan 15 17:19:13 2003
@@ -877,6 +877,18 @@
return notifier_chain_unregister(&netdev_chain, nb);
}

+/**
+ * call_netdevice_notifiers - call all network notifier blocks
+ *
+ * Call all network notifier blocks. Parameters and return value
+ * are as for notifier_call_chain().
+ */
+
+int call_netdevice_notifiers(unsigned long val, void *v)
+{
+ return notifier_call_chain(&netdev_chain, val, v);
+}
+
/*
* Support routine. Sends outgoing frames to any network
* taps currently in use.
===== net/core/rtnetlink.c 1.6 vs edited =====
--- 1.6/net/core/rtnetlink.c Tue Jan 7 01:05:42 2003
+++ edited/net/core/rtnetlink.c Wed Jan 15 17:10:37 2003
@@ -234,10 +234,20 @@
err = -EINVAL;

if (ida[IFLA_ADDRESS - 1]) {
+ if (!dev->set_mac_address) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+ if (!netif_device_present(dev)) {
+ err = -ENODEV;
+ goto out;
+ }
if (ida[IFLA_ADDRESS - 1]->rta_len != RTA_LENGTH(dev->addr_len))
goto out;
- memcpy(dev->dev_addr, RTA_DATA(ida[IFLA_ADDRESS - 1]),
- dev->addr_len);
+
+ err = dev->set_mac_address(dev, RTA_DATA(ida[IFLA_ADDRESS - 1]));
+ if (err)
+ goto out;
}

if (ida[IFLA_BROADCAST - 1]) {
@@ -250,6 +260,9 @@
err = 0;

out:
+ if (!err)
+ call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+
dev_put(dev);
return err;
}
-
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