David S. Miller wrote:
On Wed, 19 Nov 2003 18:05:15 -0800
Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote:
Is there not a more direct access if I already have the netdevice in question?
ie, can I get at the list by looking at dev->ip_ptr struct?
Yes, using dev->ip_ptr as a "struct in_device *in_dev"
do something like this:
struct in_ifaddr *ifa;
read_lock(&in_dev->lock);
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
if (inet_ifa_match(my_addr, ifa)) {
/* match */
}
}
read_unlock(&in_dev->lock);
should work...
The inet_ifa_match thing uses a mask, and was matching everything on the subnet,
or something...
This seems to work though:
static int is_ip_on_dev(struct net_device* dev, __u32 ip) {
int rv = 0;
struct in_device* in_dev = in_dev_get(dev);
if (in_dev) {
struct in_ifaddr *ifa;
read_lock(&in_dev->lock);
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
if (ifa->ifa_address == ip) {
/* match */
rv = 1;
break;
}
}
read_unlock(&in_dev->lock);
in_dev_put(in_dev);
}
return rv;
}
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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