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networkctl: Add support to set link up and down

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This commit is contained in:
Susant Sahani 2020-03-24 07:10:53 +01:00
parent 6281c6e56c
commit c30ffcee9b
2 changed files with 81 additions and 0 deletions
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14
man/networkctl.xml
View File

@ -259,6 +259,20 @@ s - Service VLAN, m - Two-port MAC Relay (TPMR)
<listitem><para>Deletes virtual netdevs. Takes interface name or index number.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<command>up</command>
</term>
<listitem><para>Bring devices up. Takes interface name or index number.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<command>down</command>
</term>
<listitem><para>Bring devices down. Takes interface name or index number.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<command>renew</command>

67
src/network/networkctl.c
View File

@ -2175,6 +2175,69 @@ static int link_delete_send_message(sd_netlink *rtnl, int index) {
return 0;
}
static int link_up_down_send_message(sd_netlink *rtnl, char *command, int index) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
int r;
assert(rtnl);
r = sd_rtnl_message_new_link(rtnl, &req, RTM_SETLINK, index);
if (r < 0)
return rtnl_log_create_error(r);
if (streq(command, "up"))
r = sd_rtnl_message_link_set_flags(req, IFF_UP, IFF_UP);
else
r = sd_rtnl_message_link_set_flags(req, 0, IFF_UP);
if (r < 0)
return log_error_errno(r, "Could not set link flags: %m");
r = sd_netlink_call(rtnl, req, 0, NULL);
if (r < 0)
return r;
return 0;
}
static int link_up_down(int argc, char *argv[], void *userdata) {
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
_cleanup_set_free_ Set *indexes = NULL;
int index, r, i;
Iterator j;
void *p;
r = sd_netlink_open(&rtnl);
if (r < 0)
return log_error_errno(r, "Failed to connect to netlink: %m");
indexes = set_new(NULL);
if (!indexes)
return log_oom();
for (i = 1; i < argc; i++) {
index = resolve_interface_or_warn(&rtnl, argv[i]);
if (index < 0)
return index;
r = set_put(indexes, INT_TO_PTR(index));
if (r < 0)
return log_oom();
}
SET_FOREACH(p, indexes, j) {
index = PTR_TO_INT(p);
r = link_up_down_send_message(rtnl, argv[0], index);
if (r < 0) {
char ifname[IF_NAMESIZE + 1];
return log_error_errno(r, "Failed to %s interface %s: %m",
argv[1], format_ifname_full(index, ifname, FORMAT_IFNAME_IFINDEX));
}
}
return r;
}
static int link_delete(int argc, char *argv[], void *userdata) {
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
_cleanup_set_free_ Set *indexes = NULL;
@ -2383,6 +2446,8 @@ static int help(void) {
" lldp [PATTERN...] Show LLDP neighbors\n"
" label Show current address label entries in the kernel\n"
" delete DEVICES... Delete virtual netdevs\n"
" up DEVICES... Bring devices up\n"
" down DEVICES... Bring devices down\n"
" renew DEVICES... Renew dynamic configurations\n"
" forcerenew DEVICES... Trigger DHCP reconfiguration of all connected clients\n"
" reconfigure DEVICES... Reconfigure interfaces\n"
@ -2485,6 +2550,8 @@ static int networkctl_main(int argc, char *argv[]) {
{ "lldp", VERB_ANY, VERB_ANY, 0, link_lldp_status },
{ "label", VERB_ANY, VERB_ANY, 0, list_address_labels },
{ "delete", 2, VERB_ANY, 0, link_delete },
{ "up", 2, VERB_ANY, 0, link_up_down },
{ "down", 2, VERB_ANY, 0, link_up_down },
{ "renew", 2, VERB_ANY, 0, link_renew },
{ "forcerenew", 2, VERB_ANY, 0, link_force_renew },
{ "reconfigure", 2, VERB_ANY, 0, verb_reconfigure },