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network: recreate link if its interface name is changed (#8795)

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If an interface name is changed, then the link state, especially
managed or not, may need to be updated, as its corresponding
.link or .network files may be different. So, let's once drop
the link and recreate a new link object.

Fixes #8794.
This commit is contained in:
Yu Watanabe 2018-04-27 04:05:32 +09:00 committed by Lennart Poettering
parent cd81a8fc82
commit 587c458665
1 changed files with 11 additions and 8 deletions
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19
src/network/networkd-link.c
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@ -3215,15 +3215,18 @@ int link_update(Link *link, sd_netlink_message *m) {
if (r >= 0 && !streq(ifname, link->ifname)) {
log_link_info(link, "Interface name change detected, %s has been renamed to %s.", link->ifname, ifname);
link_free_carrier_maps(link);
if (link->state == LINK_STATE_PENDING) {
r = free_and_strdup(&link->ifname, ifname);
if (r < 0)
return r;
} else {
Manager *manager = link->manager;
r = free_and_strdup(&link->ifname, ifname);
if (r < 0)
return r;
r = link_new_carrier_maps(link);
if (r < 0)
return r;
link_drop(link);
r = link_add(manager, m, &link);
if (r < 0)
return r;
}
}
r = sd_netlink_message_read_u32(m, IFLA_MTU, &mtu);