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sd-ipv4acd: allow to change MAC address without restarting sd-ipv4acd

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This also makes sd_ipv4acd_set_mac() refuses null MAC address.
This commit is contained in:
Yu Watanabe 2021-06-21 02:29:46 +09:00
parent d17ed573aa
commit fcb7345950
1 changed files with 13 additions and 1 deletions
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14
src/libsystemd-network/sd-ipv4acd.c
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@ -432,12 +432,24 @@ const char *sd_ipv4acd_get_ifname(sd_ipv4acd *acd) {
}
int sd_ipv4acd_set_mac(sd_ipv4acd *acd, const struct ether_addr *addr) {
int r;
assert_return(acd, -EINVAL);
assert_return(addr, -EINVAL);
assert_return(acd->state == IPV4ACD_STATE_INIT, -EBUSY);
assert_return(!ether_addr_is_null(addr), -EINVAL);
acd->mac_addr = *addr;
if (!sd_ipv4acd_is_running(acd))
return 0;
assert(acd->fd >= 0);
r = arp_update_filter(acd->fd, &acd->address, &acd->mac_addr);
if (r < 0) {
ipv4acd_reset(acd);
return r;
}
return 0;
}