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network: radv: use the uplink interface used in DHCPv6-PD

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This commit is contained in:
Yu Watanabe 2021-12-01 14:37:26 +09:00
parent 312dac2869
commit f6032ff3e0
4 changed files with 15 additions and 6 deletions
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8
man/systemd.network.xml
View file

@ -2711,9 +2711,11 @@ Token=prefixstable:2002:da8:1::</programlisting></para>
<listitem><para>Specifies the name or the index of the uplink interface, or one of the special
values <literal>:none</literal> and <literal>:auto</literal>. When emitting DNS servers or
search domains is enabled but no servers are specified, the servers configured in the uplink
interface will be emitted. When <literal>:auto</literal>, the link which has a default gateway
with the highest priority will be automatically selected. When <literal>:none</literal>, no
uplink interface will be selected. Defaults to <literal>:auto</literal>.</para></listitem>
interface will be emitted. When <literal>:auto</literal>, the value specified to the same
setting in the [DHCPv6PrefixDelegation] section will be used if
<varname>DHCPv6PrefixDelegation=</varname> is enabled, otherwise the link which has a default
gateway with the highest priority will be automatically selected. When <literal>:none</literal>,
no uplink interface will be selected. Defaults to <literal>:auto</literal>.</para></listitem>
</varlistentry>
<varlistentry>

2
src/network/networkd-dhcp6.c
View file

@ -1452,7 +1452,7 @@ static bool dhcp6_pd_uplink_is_ready(Link *link) {
return dhcp6_lease_has_pd_prefix(link->dhcp6_lease);
}
static int dhcp6_pd_find_uplink(Link *link, Link **ret) {
int dhcp6_pd_find_uplink(Link *link, Link **ret) {
Link *l;
assert(link);

1
src/network/networkd-dhcp6.h
View file

@ -18,6 +18,7 @@ typedef struct Request Request;
bool link_dhcp6_with_address_enabled(Link *link);
bool link_dhcp6_pd_is_enabled(Link *link);
int dhcp6_pd_find_uplink(Link *link, Link **ret);
int dhcp6_pd_remove(Link *link, bool only_marked);
int dhcp6_update_mac(Link *link);
int dhcp6_start(Link *link);

10
src/network/networkd-radv.c
View file

@ -410,6 +410,8 @@ set_domains:
}
static int radv_find_uplink(Link *link, Link **ret) {
int r;
assert(link);
if (link->network->router_uplink_name)
@ -419,8 +421,12 @@ static int radv_find_uplink(Link *link, Link **ret) {
return link_get_by_index(link->manager, link->network->router_uplink_index, ret);
if (link->network->router_uplink_index == UPLINK_INDEX_AUTO) {
/* It is not necessary to propagate error in automatic selection. */
if (manager_find_uplink(link->manager, AF_INET6, link, ret) < 0)
if (link_dhcp6_pd_is_enabled(link))
r = dhcp6_pd_find_uplink(link, ret); /* When DHCPv6PD is enabled, use its uplink. */
else
r = manager_find_uplink(link->manager, AF_INET6, link, ret);
if (r < 0)
/* It is not necessary to propagate error in automatic selection. */
*ret = NULL;
return 0;
}