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_link_get(sd_netlink *rtnl, int ifindex) {
sd_netlink_message *m;
sd_netlink_message *r;
uint32_t mtu = 1500;
const char *str_data;
uint8_t u8_data;
uint32_t u32_data;
struct ether_addr eth_data;
assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_GETLINK, ifindex) >= 0);
assert_se(m);
/* u8 test cases */
assert_se(sd_netlink_message_append_u8(m, IFLA_CARRIER, 0) >= 0);
assert_se(sd_netlink_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0);
assert_se(sd_netlink_message_append_u8(m, IFLA_LINKMODE, 0) >= 0);
/* u32 test cases */
assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, mtu) >= 0);
assert_se(sd_netlink_message_append_u32(m, IFLA_GROUP, 0) >= 0);
assert_se(sd_netlink_message_append_u32(m, IFLA_TXQLEN, 0) >= 0);
assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0);
assert_se(sd_netlink_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0);
assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);
assert_se(sd_netlink_message_read_string(r, IFLA_IFNAME, &str_data) == 0);
assert_se(sd_netlink_message_read_u8(r, IFLA_CARRIER, &u8_data) == 0);
assert_se(sd_netlink_message_read_u8(r, IFLA_OPERSTATE, &u8_data) == 0);
assert_se(sd_netlink_message_read_u8(r, IFLA_LINKMODE, &u8_data) == 0);
assert_se(sd_netlink_message_read_u32(r, IFLA_MTU, &u32_data) == 0);
assert_se(sd_netlink_message_read_u32(r, IFLA_GROUP, &u32_data) == 0);
assert_se(sd_netlink_message_read_u32(r, IFLA_TXQLEN, &u32_data) == 0);
assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_TX_QUEUES, &u32_data) == 0);
assert_se(sd_netlink_message_read_u32(r, IFLA_NUM_RX_QUEUES, &u32_data) == 0);
assert_se(sd_netlink_message_read_ether_addr(r, IFLA_ADDRESS, ð_data) == 0);
assert_se((m = sd_netlink_message_unref(m)) == NULL);
assert_se((r = sd_netlink_message_unref(r)) == NULL);
}
static int get_gateway_description(
sd_netlink *rtnl,
sd_hwdb *hwdb,
int ifindex,
int family,
union in_addr_union *gateway,
char **gateway_description) {
_cleanup_netlink_message_unref_ sd_netlink_message *req = NULL, *reply = NULL;
sd_netlink_message *m;
int r;
assert(rtnl);
assert(ifindex >= 0);
assert(family == AF_INET || family == AF_INET6);
assert(gateway);
assert(gateway_description);
r = sd_rtnl_message_new_neigh(rtnl, &req, RTM_GETNEIGH, ifindex, family);
if (r < 0)
return r;
r = sd_netlink_message_request_dump(req, true);
if (r < 0)
return r;
r = sd_netlink_call(rtnl, req, 0, &reply);
if (r < 0)
return r;
for (m = reply; m; m = sd_netlink_message_next(m)) {
union in_addr_union gw = {};
struct ether_addr mac = {};
uint16_t type;
int ifi, fam;
r = sd_netlink_message_get_errno(m);
if (r < 0) {
log_error_errno(r, "got error: %m");
continue;
}
r = sd_netlink_message_get_type(m, &type);
if (r < 0) {
log_error_errno(r, "could not get type: %m");
continue;
}
if (type != RTM_NEWNEIGH) {
log_error("type is not RTM_NEWNEIGH");
continue;
}
r = sd_rtnl_message_neigh_get_family(m, &fam);
if (r < 0) {
log_error_errno(r, "could not get family: %m");
continue;
}
if (fam != family) {
log_error("family is not correct");
continue;
}
r = sd_rtnl_message_neigh_get_ifindex(m, &ifi);
if (r < 0) {
log_error_errno(r, "could not get ifindex: %m");
continue;
}
if (ifindex > 0 && ifi != ifindex)
continue;
switch (fam) {
case AF_INET:
r = sd_netlink_message_read_in_addr(m, NDA_DST, &gw.in);
if (r < 0)
continue;
break;
case AF_INET6:
r = sd_netlink_message_read_in6_addr(m, NDA_DST, &gw.in6);
if (r < 0)
continue;
break;
default:
continue;
}
if (!in_addr_equal(fam, &gw, gateway))
continue;
r = sd_netlink_message_read_ether_addr(m, NDA_LLADDR, &mac);
if (r < 0)
continue;
r = ieee_oui(hwdb, &mac, gateway_description);
if (r < 0)
continue;
return 0;
}
return -ENODATA;
}
