static int netdev_veth_fill_message_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
Veth *v = VETH(netdev);
int r;
assert(netdev);
assert(!link);
assert(v);
assert(m);
r = sd_netlink_message_open_container(m, VETH_INFO_PEER);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append VETH_INFO_PEER attribute: %m");
if (v->ifname_peer) {
r = sd_netlink_message_append_string(m, IFLA_IFNAME, v->ifname_peer);
if (r < 0)
return log_error_errno(r, "Failed to add netlink interface name: %m");
}
if (v->mac_peer) {
r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, v->mac_peer);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_ADDRESS attribute: %m");
}
r = sd_netlink_message_close_container(m);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
return r;
}
int sd_netlink_message_open_container_union(sd_netlink_message *m, unsigned short type, const char *key) {
const NLTypeSystemUnion *type_system_union;
int r;
assert_return(m, -EINVAL);
assert_return(!m->sealed, -EPERM);
r = type_system_get_type_system_union(m->containers[m->n_containers].type_system, &type_system_union, type);
if (r < 0)
return r;
r = type_system_union_get_type_system(type_system_union,
&m->containers[m->n_containers + 1].type_system,
key);
if (r < 0)
return r;
r = sd_netlink_message_append_string(m, type_system_union->match, key);
if (r < 0)
return r;
/* do we evere need non-null size */
r = add_rtattr(m, type | NLA_F_NESTED, NULL, 0);
if (r < 0)
return r;
m->containers[m->n_containers ++].offset = r;
return 0;
}
static int test_acd(const char *ifname, const char *address) {
_cleanup_(sd_event_unrefp) sd_event *e = NULL;
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL, *reply = NULL;
union in_addr_union pa;
struct ether_addr ha;
int ifindex;
assert_se(in_addr_from_string(AF_INET, address, &pa) >= 0);
assert_se(sd_event_new(&e) >= 0);
assert_se(sd_netlink_open(&rtnl) >= 0);
assert_se(sd_netlink_attach_event(rtnl, e, 0) >= 0);
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, 0) >= 0);
assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, ifname) >= 0);
assert_se(sd_netlink_call(rtnl, m, 0, &reply) >= 0);
assert_se(sd_rtnl_message_link_get_ifindex(reply, &ifindex) >= 0);
assert_se(sd_netlink_message_read_ether_addr(reply, IFLA_ADDRESS, &ha) >= 0);
client_run(ifindex, &pa.in, &ha, e);
return EXIT_SUCCESS;
}
static void test_link_configure(sd_netlink *rtnl, int ifindex) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *message = NULL;
const char *mac = "98:fe:94:3f:c6:18", *name = "test";
char buffer[ETHER_ADDR_TO_STRING_MAX];
uint32_t 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_netlink_message_append_string(message, IFLA_IFNAME, name) >= 0);
assert_se(sd_netlink_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert_se(sd_netlink_message_append_u32(message, IFLA_MTU, mtu) >= 0);
assert_se(sd_netlink_call(rtnl, message, 0, NULL) == 1);
assert_se(sd_netlink_message_rewind(message) >= 0);
assert_se(sd_netlink_message_read_string(message, IFLA_IFNAME, &name_out) >= 0);
assert_se(streq(name, name_out));
assert_se(sd_netlink_message_read_ether_addr(message, IFLA_ADDRESS, &mac_out) >= 0);
assert_se(streq(mac, ether_addr_to_string(&mac_out, buffer)));
assert_se(sd_netlink_message_read_u32(message, IFLA_MTU, &mtu_out) >= 0);
assert_se(mtu == mtu_out);
}
static void test_container(sd_netlink *rtnl) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
uint16_t u16_data;
uint32_t u32_data;
const char *string_data;
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "vlan") >= 0);
assert_se(sd_netlink_message_append_u16(m, IFLA_VLAN_ID, 100) >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_message_append_string(m, IFLA_INFO_KIND, "vlan") >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_message_close_container(m) == -EINVAL);
assert_se(sd_netlink_message_rewind(m) >= 0);
assert_se(sd_netlink_message_enter_container(m, IFLA_LINKINFO) >= 0);
assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
assert_se(streq("vlan", string_data));
assert_se(sd_netlink_message_enter_container(m, IFLA_INFO_DATA) >= 0);
assert_se(sd_netlink_message_read_u16(m, IFLA_VLAN_ID, &u16_data) >= 0);
assert_se(sd_netlink_message_exit_container(m) >= 0);
assert_se(sd_netlink_message_read_string(m, IFLA_INFO_KIND, &string_data) >= 0);
assert_se(streq("vlan", string_data));
assert_se(sd_netlink_message_exit_container(m) >= 0);
assert_se(sd_netlink_message_read_u32(m, IFLA_LINKINFO, &u32_data) < 0);
assert_se(sd_netlink_message_exit_container(m) == -EINVAL);
}
static int lookup_id(sd_netlink *nl, sd_genl_family family, uint16_t *id) {
int r;
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
r = sd_genl_message_new(nl, SD_GENL_ID_CTRL, CTRL_CMD_GETFAMILY, &req);
if (r < 0)
return r;
r = sd_netlink_message_append_string(req, CTRL_ATTR_FAMILY_NAME, genl_families[family].name);
if (r < 0)
return r;
r = sd_netlink_call(nl, req, 0, &reply);
if (r < 0)
return r;
return sd_netlink_message_read_u16(reply, CTRL_ATTR_FAMILY_ID, id);
}
int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link, sd_netlink_message_handler_t callback, bool update) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
int r;
assert(rule);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_NEWRULE, rule->family);
if (r < 0)
return log_error_errno(r, "Could not allocate RTM_NEWRULE message: %m");
if (!in_addr_is_null(rule->family, &rule->from)) {
if (rule->family == AF_INET)
r = sd_netlink_message_append_in_addr(m, FRA_SRC, &rule->from.in);
else
r = sd_netlink_message_append_in6_addr(m, FRA_SRC, &rule->from.in6);
if (r < 0)
return log_error_errno(r, "Could not append FRA_SRC attribute: %m");
r = sd_rtnl_message_routing_policy_rule_set_rtm_src_prefixlen(m, rule->from_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set source prefix length: %m");
}
if (!in_addr_is_null(rule->family, &rule->to)) {
if (rule->family == AF_INET)
r = sd_netlink_message_append_in_addr(m, FRA_DST, &rule->to.in);
else
r = sd_netlink_message_append_in6_addr(m, FRA_DST, &rule->to.in6);
if (r < 0)
return log_error_errno(r, "Could not append FRA_DST attribute: %m");
r = sd_rtnl_message_routing_policy_rule_set_rtm_dst_prefixlen(m, rule->to_prefixlen);
if (r < 0)
return log_error_errno(r, "Could not set destination prefix length: %m");
}
r = sd_netlink_message_append_u32(m, FRA_PRIORITY, rule->priority);
if (r < 0)
return log_error_errno(r, "Could not append FRA_PRIORITY attribute: %m");
if (rule->tos > 0) {
r = sd_rtnl_message_routing_policy_rule_set_tos(m, rule->tos);
if (r < 0)
return log_error_errno(r, "Could not set ip rule tos: %m");
}
if (rule->table < 256) {
r = sd_rtnl_message_routing_policy_rule_set_table(m, rule->table);
if (r < 0)
return log_error_errno(r, "Could not set ip rule table: %m");
} else {
r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC);
if (r < 0)
return log_error_errno(r, "Could not set ip rule table: %m");
r = sd_netlink_message_append_u32(m, FRA_TABLE, rule->table);
if (r < 0)
return log_error_errno(r, "Could not append FRA_TABLE attribute: %m");
}
if (rule->fwmark > 0) {
r = sd_netlink_message_append_u32(m, FRA_FWMARK, rule->fwmark);
if (r < 0)
return log_error_errno(r, "Could not append FRA_FWMARK attribute: %m");
}
if (rule->fwmask > 0) {
r = sd_netlink_message_append_u32(m, FRA_FWMASK, rule->fwmask);
if (r < 0)
return log_error_errno(r, "Could not append FRA_FWMASK attribute: %m");
}
if (rule->iif) {
r = sd_netlink_message_append_string(m, FRA_IFNAME, rule->iif);
if (r < 0)
return log_error_errno(r, "Could not append FRA_IFNAME attribute: %m");
}
if (rule->oif) {
r = sd_netlink_message_append_string(m, FRA_OIFNAME, rule->oif);
if (r < 0)
return log_error_errno(r, "Could not append FRA_OIFNAME attribute: %m");
}
rule->link = link;
r = sd_netlink_call_async(link->manager->rtnl, m, callback, link, 0, NULL);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
link_ref(link);
r = routing_policy_rule_add(link->manager, rule->family, &rule->from, rule->from_prefixlen, &rule->to,
rule->to_prefixlen, rule->tos, rule->fwmark, rule->table, rule->iif, rule->oif, NULL);
if (r < 0)
return log_error_errno(r, "Could not add rule : %m");
return 0;
}
static int netdev_geneve_create(NetDev *netdev) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *m = NULL;
Geneve *v;
int r;
assert(netdev);
v = GENEVE(netdev);
r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not allocate RTM_NEWLINK message: %m");
r = sd_netlink_message_append_string(m, IFLA_IFNAME, netdev->ifname);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_IFNAME, attribute: %m");
if (netdev->mac) {
r = sd_netlink_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_ADDRESS attribute: %m");
}
if (netdev->mtu != 0) {
r = sd_netlink_message_append_u32(m, IFLA_MTU, netdev->mtu);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_MTU attribute: %m");
}
r = sd_netlink_message_open_container(m, IFLA_LINKINFO);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
r = sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
if (v->id <= GENEVE_VID_MAX) {
r = sd_netlink_message_append_u32(m, IFLA_GENEVE_ID, v->id);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_ID attribute: %m");
}
if (in_addr_is_null(v->remote_family, &v->remote) == 0) {
if (v->remote_family == AF_INET)
r = sd_netlink_message_append_in_addr(m, IFLA_GENEVE_REMOTE, &v->remote.in);
else
r = sd_netlink_message_append_in6_addr(m, IFLA_GENEVE_REMOTE6, &v->remote.in6);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_REMOTE/IFLA_GENEVE_REMOTE6 attribute: %m");
}
if (v->ttl > 0) {
r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TTL, v->ttl);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TTL attribute: %m");
}
r = sd_netlink_message_append_u8(m, IFLA_GENEVE_TOS, v->tos);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_TOS attribute: %m");
r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_CSUM, v->udpcsum);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_CSUM attribute: %m");
r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_TX, v->udp6zerocsumtx);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_TX attribute: %m");
r = sd_netlink_message_append_u8(m, IFLA_GENEVE_UDP_ZERO_CSUM6_RX, v->udp6zerocsumrx);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_UDP_ZERO_CSUM6_RX attribute: %m");
if (v->dest_port != DEFAULT_GENEVE_DESTINATION_PORT) {
r = sd_netlink_message_append_u16(m, IFLA_GENEVE_PORT, htobe16(v->dest_port));
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_PORT attribute: %m");
}
if (v->flow_label > 0) {
r = sd_netlink_message_append_u32(m, IFLA_GENEVE_LABEL, htobe32(v->flow_label));
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_GENEVE_LABEL attribute: %m");
}
r = sd_netlink_message_close_container(m);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
r = sd_netlink_message_close_container(m);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
r = netlink_call_async(netdev->manager->rtnl, NULL, m, geneve_netdev_create_handler,
netdev_destroy_callback, netdev);
if (r < 0)
return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");
netdev_ref(netdev);
netdev->state = NETDEV_STATE_CREATING;
log_netdev_debug(netdev, "Creating");
return r;
}
static int test_pppoe_server(sd_event *e) {
sd_netlink *rtnl;
sd_netlink_message *m;
pid_t pid;
int r, client_ifindex, server_ifindex;
r = unshare(CLONE_NEWNET);
if (r < 0 && errno == EPERM)
return EXIT_TEST_SKIP;
assert_se(r >= 0);
assert_se(sd_netlink_open(&rtnl) >= 0);
assert_se(sd_netlink_attach_event(rtnl, e, 0) >= 0);
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, "pppoe-server") >= 0);
assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "veth") >= 0);
assert_se(sd_netlink_message_open_container(m, VETH_INFO_PEER) >= 0);
assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, "pppoe-client") >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_call(rtnl, m, 0, NULL) >= 0);
client_ifindex = (int) if_nametoindex("pppoe-client");
assert_se(client_ifindex > 0);
server_ifindex = (int) if_nametoindex("pppoe-server");
assert_se(server_ifindex > 0);
m = sd_netlink_message_unref(m);
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_SETLINK, client_ifindex) >= 0);
assert_se(sd_rtnl_message_link_set_flags(m, IFF_UP, IFF_UP) >= 0);
assert_se(sd_netlink_call(rtnl, m, 0, NULL) >= 0);
m = sd_netlink_message_unref(m);
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_SETLINK, server_ifindex) >= 0);
assert_se(sd_rtnl_message_link_set_flags(m, IFF_UP, IFF_UP) >= 0);
assert_se(sd_netlink_call(rtnl, m, 0, NULL) >= 0);
pid = fork();
assert_se(pid >= 0);
if (pid == 0) {
/* let the client send some discover messages before the server is started */
sleep(2);
/* TODO: manage pppoe-server-options */
execlp("pppoe-server", "pppoe-server", "-F",
"-I", "pppoe-server",
"-C", "Test-AC",
"-S", "Service-Default",
"-S", "Service-First-Auxiliary",
"-S", "Service-Second-Auxiliary",
NULL);
assert_not_reached("failed to execute pppoe-server. not installed?");
}
client_run("pppoe-client", e);
assert_se(kill(pid, SIGTERM) >= 0);
assert_se(wait_for_terminate(pid, NULL) >= 0);
assert_se(!sd_netlink_message_unref(m));
assert_se(!sd_netlink_unref(rtnl));
return EXIT_SUCCESS;
}
static int test_tunnel_configure(sd_netlink *rtnl) {
int r;
sd_netlink_message *m, *n;
struct in_addr local, remote;
/* skip test if module cannot be loaded */
r = load_module("ipip");
if(r < 0)
return EXIT_TEST_SKIP;
if(getuid() != 0)
return EXIT_TEST_SKIP;
/* IPIP tunnel */
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
assert_se(m);
assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, "ipip-tunnel") >= 0);
assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, 1234)>= 0);
assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "ipip") >= 0);
inet_pton(AF_INET, "192.168.21.1", &local.s_addr);
assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
inet_pton(AF_INET, "192.168.21.2", &remote.s_addr);
assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_message_close_container(m) >= 0);
assert_se(sd_netlink_call(rtnl, m, -1, 0) == 1);
assert_se((m = sd_netlink_message_unref(m)) == NULL);
r = load_module("sit");
if(r < 0)
return EXIT_TEST_SKIP;
/* sit */
assert_se(sd_rtnl_message_new_link(rtnl, &n, RTM_NEWLINK, 0) >= 0);
assert_se(n);
assert_se(sd_netlink_message_append_string(n, IFLA_IFNAME, "sit-tunnel") >= 0);
assert_se(sd_netlink_message_append_u32(n, IFLA_MTU, 1234)>= 0);
assert_se(sd_netlink_message_open_container(n, IFLA_LINKINFO) >= 0);
assert_se(sd_netlink_message_open_container_union(n, IFLA_INFO_DATA, "sit") >= 0);
assert_se(sd_netlink_message_append_u8(n, IFLA_IPTUN_PROTO, IPPROTO_IPIP) >= 0);
inet_pton(AF_INET, "192.168.21.3", &local.s_addr);
assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
inet_pton(AF_INET, "192.168.21.4", &remote.s_addr);
assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
assert_se(sd_netlink_message_close_container(n) >= 0);
assert_se(sd_netlink_message_close_container(n) >= 0);
assert_se(sd_netlink_call(rtnl, n, -1, 0) == 1);
assert_se((n = sd_netlink_message_unref(n)) == NULL);
return EXIT_SUCCESS;
}