static void test_link_configure(sd_rtnl *rtnl, int ifindex) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL;
const char *mac = "98:fe:94:3f:c6:18", *name = "test";
char buffer[ETHER_ADDR_TO_STRING_MAX];
unsigned int mtu = 1450, mtu_out;
const char *name_out;
struct ether_addr mac_out;
/* we'd really like to test NEWLINK, but let's not mess with the running kernel */
assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0);
assert_se(sd_rtnl_message_append_string(message, IFLA_IFNAME, name) >= 0);
assert_se(sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert_se(sd_rtnl_message_append_u32(message, IFLA_MTU, mtu) >= 0);
assert_se(sd_rtnl_call(rtnl, message, 0, NULL) == 1);
assert_se(sd_rtnl_message_rewind(message) >= 0);
assert_se(sd_rtnl_message_read_string(message, IFLA_IFNAME, &name_out) >= 0);
assert_se(streq(name, name_out));
assert_se(sd_rtnl_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0);
assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer)));
assert_se(sd_rtnl_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0);
assert_se(mtu == mtu_out);
}
static void test_link_configure(sd_rtnl *rtnl, int ifindex) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *message;
uint16_t type;
const char *mac = "98:fe:94:3f:c6:18", *name = "test";
unsigned int mtu = 1450;
void *data;
/* we'd really like to test NEWLINK, but let's not mess with the running kernel */
assert_se(sd_rtnl_message_new_link(rtnl, &message, RTM_GETLINK, ifindex) >= 0);
assert_se(sd_rtnl_message_append_string(message, IFLA_IFNAME, name) >= 0);
assert_se(sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert_se(sd_rtnl_message_append_u32(message, IFLA_MTU, mtu) >= 0);
assert_se(sd_rtnl_call(rtnl, message, 0, NULL) == 1);
assert_se(sd_rtnl_message_read(message, &type, &data) > 0);
assert_se(type == IFLA_IFNAME);
assert_se(streq(name, (char *) data));
assert_se(sd_rtnl_message_read(message, &type, &data) > 0);
assert_se(type == IFLA_ADDRESS);
assert_se(streq(mac, ether_ntoa(data)));
assert_se(sd_rtnl_message_read(message, &type, &data) > 0);
assert_se(type == IFLA_MTU);
assert_se(mtu == *(unsigned int *) data);
}
static int netdev_fill_dummy_rtnl_message(NetDev *netdev, sd_rtnl_message *m) {
int r;
assert(netdev);
assert(m);
r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_IFNAME, attribute: %s",
strerror(-r));
return r;
}
if (netdev->mac) {
r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
if (r < 0) {
log_error_netdev(netdev,
"Colud not append IFLA_ADDRESS attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_LINKINFO attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
netdev_kind_to_string(netdev->kind));
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_INFO_DATA attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_close_container(m);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_LINKINFO attribute: %s",
strerror(-r));
return r;
}
return r;
}
int rtnl_set_link_properties(sd_rtnl *rtnl, int ifindex, const char *alias,
const struct ether_addr *mac, unsigned mtu) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *message = NULL;
bool need_update = false;
int r;
assert(rtnl);
assert(ifindex > 0);
if (!alias && !mac && mtu == 0)
return 0;
r = sd_rtnl_message_new_link(rtnl, &message, RTM_SETLINK, ifindex);
if (r < 0)
return r;
if (alias) {
r = sd_rtnl_message_append_string(message, IFLA_IFALIAS, alias);
if (r < 0)
return r;
need_update = true;
}
if (mac) {
r = sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, mac);
if (r < 0)
return r;
need_update = true;
}
if (mtu > 0) {
r = sd_rtnl_message_append_u32(message, IFLA_MTU, mtu);
if (r < 0)
return r;
need_update = true;
}
if (need_update) {
r = sd_rtnl_call(rtnl, message, 0, NULL);
if (r < 0)
return r;
}
return 0;
}
static int netdev_veth_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
Veth *v = VETH(netdev);
int r;
assert(netdev);
assert(!link);
assert(v);
assert(m);
r = sd_rtnl_message_open_container(m, VETH_INFO_PEER);
if (r < 0) {
log_error_netdev(netdev,
"Could not append VETH_INFO_PEER attribute: %s",
strerror(-r));
return r;
}
if (v->ifname_peer) {
r = sd_rtnl_message_append_string(m, IFLA_IFNAME, v->ifname_peer);
if (r < 0) {
log_error("Failed to add netlink interface name: %s", strerror(-r));
return r;
}
}
if (v->mac_peer) {
r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, v->mac_peer);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_ADDRESS attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_close_container(m);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_INFO_DATA attribute: %s",
strerror(-r));
return r;
}
return r;
}
int netdev_create_vlan(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
const char *kind;
int r;
assert(netdev);
assert(netdev->kind == NETDEV_KIND_VLAN);
assert(link);
assert(callback);
assert(netdev->ifname);
assert(netdev->manager);
assert(netdev->manager->rtnl);
r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, 0);
if (r < 0) {
log_error_netdev(netdev,
"Could not allocate RTM_NEWLINK message: %s",
strerror(-r));
return r;
}
if (link) {
r = sd_rtnl_message_append_u32(req, IFLA_LINK, link->ifindex);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_LINK attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->ifname);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_IFNAME attribute: %s",
strerror(-r));
return r;
}
if (netdev->mtu) {
r = sd_rtnl_message_append_u32(req, IFLA_MTU, netdev->mtu);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_MTU attribute: %s",
strerror(-r));
return r;
}
}
if (netdev->mac) {
r = sd_rtnl_message_append_ether_addr(req, IFLA_ADDRESS, netdev->mac);
if (r < 0) {
log_error_netdev(netdev,
"Colud not append IFLA_ADDRESS attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_open_container(req, IFLA_LINKINFO);
if (r < 0) {
log_error_netdev(netdev,
"Could not open IFLA_LINKINFO container: %s",
strerror(-r));
return r;
}
kind = netdev_kind_to_string(netdev->kind);
if (!kind) {
log_error_netdev(netdev, "Invalid kind");
return -EINVAL;
}
r = sd_rtnl_message_open_container_union(req, IFLA_INFO_DATA, kind);
if (r < 0) {
log_error_netdev(netdev,
"Could not open IFLA_INFO_DATA container: %s",
strerror(-r));
return r;
}
if (netdev->vlanid <= VLANID_MAX) {
r = sd_rtnl_message_append_u16(req, IFLA_VLAN_ID, netdev->vlanid);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_VLAN_ID attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_close_container(req);
if (r < 0) {
log_error_netdev(netdev,
"Could not close IFLA_INFO_DATA container %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_close_container(req);
if (r < 0) {
log_error_netdev(netdev,
"Could not close IFLA_LINKINFO container %s",
strerror(-r));
return r;
}
r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0) {
log_error_netdev(netdev,
"Could not send rtnetlink message: %s", strerror(-r));
return r;
}
link_ref(link);
log_debug_netdev(netdev, "creating netdev");
netdev->state = NETDEV_STATE_CREATING;
return 0;
}
static int netdev_fill_vti_rtnl_message(Link *link, sd_rtnl_message *m) {
NetDev *netdev;
int r;
assert(link);
assert(link->network);
assert(link->network->tunnel);
assert(m);
netdev = link->network->tunnel;
assert(netdev->family == AF_INET);
r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_IFNAME, attribute: %s",
strerror(-r));
return r;
}
if(netdev->mtu) {
r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_MTU attribute: %s",
strerror(-r));
return r;
}
}
if (netdev->mac) {
r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
if (r < 0) {
log_error_netdev(netdev,
"Colud not append IFLA_ADDRESS attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_LINKINFO attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
netdev_kind_to_string(netdev->kind));
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_INFO_DATA attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_append_u32(m, IFLA_VTI_LINK, link->ifindex);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_IPTUN_LINK attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_append_in_addr(m, IFLA_VTI_LOCAL, &netdev->local.in);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_IPTUN_LOCAL attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_append_in_addr(m, IFLA_VTI_REMOTE, &netdev->remote.in);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_IPTUN_REMOTE attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_close_container(m);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_INFO_DATA attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_close_container(m);
if (r < 0) {
log_error_netdev(netdev,
"Could not append IFLA_LINKINFO attribute: %s",
strerror(-r));
return r;
}
return r;
}
