/* send a request to the kernel to add a FDB entry in its static MAC table. */
int fdb_entry_configure(Link *link, FdbEntry *fdb_entry) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
sd_netlink *rtnl;
int r;
uint8_t flags;
Bridge *bridge;
assert(link);
assert(link->network);
assert(link->manager);
assert(fdb_entry);
rtnl = link->manager->rtnl;
bridge = BRIDGE(link->network->bridge);
/* create new RTM message */
r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_NEWNEIGH, link->ifindex, PF_BRIDGE);
if (r < 0)
return rtnl_log_create_error(r);
if (bridge)
flags = NTF_MASTER;
else
flags = NTF_SELF;
r = sd_rtnl_message_neigh_set_flags(req, flags);
if (r < 0)
return rtnl_log_create_error(r);
/* only NUD_PERMANENT state supported. */
r = sd_rtnl_message_neigh_set_state(req, NUD_NOARP | NUD_PERMANENT);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_message_append_ether_addr(req, NDA_LLADDR, fdb_entry->mac_addr);
if (r < 0)
return rtnl_log_create_error(r);
/* VLAN Id is optional. We'll add VLAN Id only if it's specified. */
if (0 != fdb_entry->vlan_id) {
r = sd_netlink_message_append_u16(req, NDA_VLAN, fdb_entry->vlan_id);
if (r < 0)
return rtnl_log_create_error(r);
}
/* send message to the kernel to update its internal static MAC table. */
r = sd_netlink_call_async(rtnl, NULL, req, set_fdb_handler,
link_netlink_destroy_callback, link, 0, __func__);
if (r < 0)
return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
link_ref(link);
return 0;
}
static int list_links(int argc, char *argv[], void *userdata) {
_cleanup_netlink_message_unref_ sd_netlink_message *req = NULL, *reply = NULL;
_cleanup_netlink_unref_ sd_netlink *rtnl = NULL;
_cleanup_free_ LinkInfo *links = NULL;
int r, c, i;
pager_open_if_enabled();
r = sd_netlink_open(&rtnl);
if (r < 0)
return log_error_errno(r, "Failed to connect to netlink: %m");
r = sd_rtnl_message_new_link(rtnl, &req, RTM_GETLINK, 0);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_message_request_dump(req, true);
if (r < 0)
return rtnl_log_create_error(r);
r = sd_netlink_call(rtnl, req, 0, &reply);
if (r < 0)
return log_error_errno(r, "Failed to enumerate links: %m");
if (arg_legend)
printf("%3s %-16s %-18s %-11s %-10s\n", "IDX", "LINK", "TYPE", "OPERATIONAL", "SETUP");
c = decode_and_sort_links(reply, &links);
if (c < 0)
return rtnl_log_parse_error(c);
for (i = 0; i < c; i++) {
_cleanup_free_ char *setup_state = NULL, *operational_state = NULL;
_cleanup_device_unref_ sd_device *d = NULL;
const char *on_color_operational, *off_color_operational,
*on_color_setup, *off_color_setup;
char devid[2 + DECIMAL_STR_MAX(int)];
_cleanup_free_ char *t = NULL;
sd_network_link_get_operational_state(links[i].ifindex, &operational_state);
operational_state_to_color(operational_state, &on_color_operational, &off_color_operational);
sd_network_link_get_setup_state(links[i].ifindex, &setup_state);
setup_state_to_color(setup_state, &on_color_setup, &off_color_setup);
sprintf(devid, "n%i", links[i].ifindex);
(void)sd_device_new_from_device_id(&d, devid);
link_get_type_string(links[i].iftype, d, &t);
printf("%3i %-16s %-18s %s%-11s%s %s%-10s%s\n",
links[i].ifindex, links[i].name, strna(t),
on_color_operational, strna(operational_state), off_color_operational,
on_color_setup, strna(setup_state), off_color_setup);
}
if (arg_legend)
printf("\n%i links listed.\n", c);
return 0;
}