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networkd: listen to changes to the MAC address

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Bridges will change their MAC address when other devices are enslaved. We need
the correct MAC address to acquire a DHCP lease, so take note of it whenever
it changes.
This commit is contained in:
Tom Gundersen 2014-03-05 11:53:26 +01:00
parent 3b35ade3fd
commit 69629de9c8
1 changed files with 26 additions and 5 deletions
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31
src/network/networkd-link.c
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@ -1345,11 +1345,32 @@ int link_update(Link *link, sd_rtnl_message *m) {
}
while (sd_rtnl_message_read(m, &type, &data) > 0) {
if (type == IFLA_MTU && link->network->dhcp &&
link->network->dhcp_mtu && !link->original_mtu) {
link->original_mtu = *(uint16_t *) data;
log_debug_link(link, "saved original MTU: %" PRIu16,
link->original_mtu);
switch(type) {
case IFLA_MTU:
if (link->network->dhcp && link->network->dhcp_mtu &&
!link->original_mtu) {
link->original_mtu = *(uint16_t *) data;
log_debug_link(link, "saved original MTU: %"
PRIu16, link->original_mtu);
}
break;
case IFLA_ADDRESS:
if (memcmp(&link->mac.ether_addr_octet, &data,
ETH_ALEN)) {
memcpy(&link->mac, data, ETH_ALEN);
log_debug_link(link, "updated MAC address: "
"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
link->mac.ether_addr_octet[0],
link->mac.ether_addr_octet[1],
link->mac.ether_addr_octet[2],
link->mac.ether_addr_octet[3],
link->mac.ether_addr_octet[4],
link->mac.ether_addr_octet[5]);
}
break;
}
}