test-rtnl.c revision ee3a6a51e5b098aa0c9641ed71d275c459ad2f5a
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <linux/rtnetlink.h>
#include <netinet/ether.h>
#include "util.h"
#include "macro.h"
#include "sd-rtnl.h"
#include "socket-util.h"
#include "rtnl-util.h"
#include "event-util.h"
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(sd_rtnl_message_new_link(RTM_GETLINK, ifindex, &message) >= 0);
assert(sd_rtnl_message_append_string(message, IFLA_IFNAME, name) >= 0);
assert(sd_rtnl_message_append_ether_addr(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert(sd_rtnl_message_append_u32(message, IFLA_MTU, mtu) >= 0);
assert(sd_rtnl_call(rtnl, message, 0, NULL) == 1);
assert(sd_rtnl_message_read(message, &type, &data) > 0);
assert(type == IFLA_IFNAME);
assert(streq(name, (char *) data));
assert(sd_rtnl_message_read(message, &type, &data) > 0);
assert(type == IFLA_ADDRESS);
assert(streq(mac, ether_ntoa(data)));
assert(sd_rtnl_message_read(message, &type, &data) > 0);
assert(type == IFLA_MTU);
assert(mtu == *(unsigned int *) data);
}
static void test_link_get(sd_rtnl *rtnl, int ifindex) {
sd_rtnl_message *m;
sd_rtnl_message *r;
unsigned int mtu = 1500;
unsigned int *mtu_reply;
void *data;
uint16_t type;
assert(sd_rtnl_message_new_link(RTM_GETLINK, ifindex, &m) >= 0);
assert(m);
/* u8 test cases */
assert(sd_rtnl_message_append_u8(m, IFLA_CARRIER, 0) >= 0);
assert(sd_rtnl_message_append_u8(m, IFLA_OPERSTATE, 0) >= 0);
assert(sd_rtnl_message_append_u8(m, IFLA_LINKMODE, 0) >= 0);
/* u32 test cases */
assert(sd_rtnl_message_append_u32(m, IFLA_MTU, mtu) >= 0);
assert(sd_rtnl_message_append_u32(m, IFLA_GROUP, 0) >= 0);
assert(sd_rtnl_message_append_u32(m, IFLA_TXQLEN, 0) >= 0);
assert(sd_rtnl_message_append_u32(m, IFLA_NUM_TX_QUEUES, 0) >= 0);
assert(sd_rtnl_message_append_u32(m, IFLA_NUM_RX_QUEUES, 0) >= 0);
assert(sd_rtnl_call(rtnl, m, -1, &r) == 1);
/* u8 read back */
assert(sd_rtnl_message_read(m, &type, &data) == 1);
assert(type == IFLA_CARRIER);
assert(sd_rtnl_message_read(m, &type, &data) == 1);
assert(type == IFLA_OPERSTATE);
assert(sd_rtnl_message_read(m, &type, &data) == 1);
assert(type == IFLA_LINKMODE);
/* u32 read back */
assert(sd_rtnl_message_read(m, &type, (void **) &mtu_reply) == 1);
assert(type == IFLA_MTU);
assert(*mtu_reply == mtu);
assert(sd_rtnl_message_read(m, &type, &data) == 1);
assert(type == IFLA_GROUP);
assert(sd_rtnl_message_read(m, &type, &data) == 1);
assert(type == IFLA_TXQLEN);
assert(sd_rtnl_message_read(m, &type, &data) == 1);
assert(type == IFLA_NUM_TX_QUEUES);
assert(sd_rtnl_message_read(m, &type, &data) == 1);
assert(type == IFLA_NUM_RX_QUEUES);
while (sd_rtnl_message_read(r, &type, &data) > 0) {
switch (type) {
// case IFLA_MTU:
// assert(*(unsigned int *) data == 65536);
// break;
// case IFLA_QDISC:
// assert(streq((char *) data, "noqueue"));
// break;
case IFLA_IFNAME:
assert(streq((char *) data, "lo"));
break;
}
}
assert(sd_rtnl_flush(rtnl) >= 0);
assert((m = sd_rtnl_message_unref(m)) == NULL);
}
static void test_route(void) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req;
struct in_addr addr;
uint32_t index = 2;
uint16_t type;
void *data;
int r;
r = sd_rtnl_message_new_route(RTM_NEWROUTE, AF_INET, &req);
if (r < 0) {
log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r));
return;
}
addr.s_addr = htonl(INADDR_LOOPBACK);
r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &addr);
if (r < 0) {
log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
return;
}
r = sd_rtnl_message_append_u32(req, RTA_OIF, index);
if (r < 0) {
log_error("Could not append RTA_OIF attribute: %s", strerror(-r));
return;
}
assert(rtnl_message_seal(NULL, req) >= 0);
assert(sd_rtnl_message_read(req, &type, &data) > 0);
assert(type == RTA_GATEWAY);
assert(((struct in_addr *)data)->s_addr == addr.s_addr);
assert(sd_rtnl_message_read(req, &type, &data) > 0);
assert(type == RTA_OIF);
assert(*(uint32_t *) data == index);
}
static void test_multiple(void) {
sd_rtnl *rtnl1, *rtnl2;
assert(sd_rtnl_open(0, &rtnl1) >= 0);
assert(sd_rtnl_open(0, &rtnl2) >= 0);
rtnl1 = sd_rtnl_unref(rtnl1);
rtnl2 = sd_rtnl_unref(rtnl2);
}
static int link_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
void *data;
uint16_t type;
char *ifname = userdata;
assert(rtnl);
assert(m);
log_info("got link info about %s", ifname);
free(ifname);
while (sd_rtnl_message_read(m, &type, &data) > 0) {
switch (type) {
// case IFLA_MTU:
// assert(*(unsigned int *) data == 65536);
// break;
// case IFLA_QDISC:
// assert(streq((char *) data, "noqueue"));
// break;
case IFLA_IFNAME:
assert(streq((char *) data, "lo"));
break;
}
}
return 1;
}
static void test_event_loop(int ifindex) {
_cleanup_event_unref_ sd_event *event = NULL;
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
char *ifname;
ifname = strdup("lo2");
assert(ifname);
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(sd_rtnl_message_new_link(RTM_GETLINK, ifindex, &m) >= 0);
assert(sd_rtnl_call_async(rtnl, m, &link_handler, ifname, 0, NULL) >= 0);
assert(sd_event_default(&event) >= 0);
assert(sd_rtnl_attach_event(rtnl, event, 0) >= 0);
assert(sd_event_run(event, 0) >= 0);
assert(sd_rtnl_detach_event(rtnl) >= 0);
}
static int pipe_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
int *counter = userdata;
(*counter) --;
log_info("got reply, %d left in pipe", *counter);
return sd_rtnl_message_get_errno(m);
}
static void test_async(int ifindex) {
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL, *r = NULL;
uint32_t serial;
char *ifname;
ifname = strdup("lo");
assert(ifname);
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(sd_rtnl_message_new_link(RTM_GETLINK, ifindex, &m) >= 0);
assert(sd_rtnl_call_async(rtnl, m, &link_handler, ifname, 0, &serial) >= 0);
assert(sd_rtnl_wait(rtnl, 0) >= 0);
assert(sd_rtnl_process(rtnl, &r) >= 0);
}
static void test_pipe(int ifindex) {
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
_cleanup_rtnl_message_unref_ sd_rtnl_message *m1 = NULL, *m2 = NULL;
int counter = 0;
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(sd_rtnl_message_new_link(RTM_GETLINK, ifindex, &m1) >= 0);
assert(sd_rtnl_message_new_link(RTM_GETLINK, ifindex, &m2) >= 0);
counter ++;
assert(sd_rtnl_call_async(rtnl, m1, &pipe_handler, &counter, 0, NULL) >= 0);
counter ++;
assert(sd_rtnl_call_async(rtnl, m2, &pipe_handler, &counter, 0, NULL) >= 0);
while (counter > 0) {
assert(sd_rtnl_wait(rtnl, 0) >= 0);
assert(sd_rtnl_process(rtnl, NULL) >= 0);
}
}
static void test_container(void) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
uint16_t type;
void *data;
assert(sd_rtnl_message_new_link(RTM_NEWLINK, 0, &m) >= 0);
assert(sd_rtnl_message_open_container(m, IFLA_LINKINFO) >= 0);
assert(sd_rtnl_message_open_container(m, IFLA_LINKINFO) == -ENOTSUP);
assert(sd_rtnl_message_append_string(m, IFLA_INFO_KIND, "kind") >= 0);
assert(sd_rtnl_message_open_container(m, IFLA_INFO_DATA) >= 0);
assert(sd_rtnl_message_open_container(m, IFLA_INFO_DATA) == -ENOTSUP);
assert(sd_rtnl_message_append_u16(m, IFLA_VLAN_ID, 100) >= 0);
assert(sd_rtnl_message_close_container(m) >= 0);
assert(sd_rtnl_message_append_string(m, IFLA_INFO_KIND, "kind") >= 0);
assert(sd_rtnl_message_close_container(m) >= 0);
assert(sd_rtnl_message_close_container(m) == -EINVAL);
assert(rtnl_message_seal(NULL, m) >= 0);
assert(sd_rtnl_message_read(m, &type, &data) >= 0);
assert(type == IFLA_LINKINFO);
assert(data == NULL);
assert(sd_rtnl_message_read(m, &type, &data) >= 0);
assert(type == IFLA_INFO_KIND);
assert(streq("kind", (char *)data));
assert(sd_rtnl_message_read(m, &type, &data) >= 0);
assert(type == IFLA_INFO_DATA);
assert(data == NULL);
assert(sd_rtnl_message_read(m, &type, &data) >= 0);
assert(type == IFLA_VLAN_ID);
assert(*(uint16_t *)data == 100);
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert(sd_rtnl_message_exit_container(m) >= 0);
assert(sd_rtnl_message_read(m, &type, &data) >= 0);
assert(type == IFLA_INFO_KIND);
assert(streq("kind", (char *)data));
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert(sd_rtnl_message_exit_container(m) >= 0);
assert(sd_rtnl_message_exit_container(m) == -EINVAL);
}
static void test_match(void) {
_cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(sd_rtnl_add_match(rtnl, RTM_NEWLINK, &link_handler, NULL) >= 0);
assert(sd_rtnl_add_match(rtnl, RTM_NEWLINK, &link_handler, NULL) >= 0);
assert(sd_rtnl_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 1);
assert(sd_rtnl_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 1);
assert(sd_rtnl_remove_match(rtnl, RTM_NEWLINK, &link_handler, NULL) == 0);
}
int main(void) {
sd_rtnl *rtnl;
sd_rtnl_message *m;
sd_rtnl_message *r;
void *data;
int if_loopback;
uint16_t type;
test_match();
test_multiple();
test_route();
test_container();
assert(sd_rtnl_open(0, &rtnl) >= 0);
assert(rtnl);
if_loopback = (int) if_nametoindex("lo");
assert(if_loopback > 0);
test_async(if_loopback);
test_pipe(if_loopback);
test_event_loop(if_loopback);
test_link_configure(rtnl, if_loopback);
assert(sd_rtnl_message_new_link(RTM_GETLINK, if_loopback, &m) >= 0);
assert(m);
assert(sd_rtnl_message_get_type(m, &type) >= 0);
assert(type == RTM_GETLINK);
assert(sd_rtnl_message_read(m, &type, &data) == -EPERM);
assert(sd_rtnl_call(rtnl, m, 0, &r) == 1);
assert(sd_rtnl_message_get_type(r, &type) >= 0);
assert(type == RTM_NEWLINK);
assert(sd_rtnl_message_read(m, &type, &data) == 0);
assert((r = sd_rtnl_message_unref(r)) == NULL);
assert(sd_rtnl_call(rtnl, m, -1, &r) == -EPERM);
assert((m = sd_rtnl_message_unref(m)) == NULL);
assert((r = sd_rtnl_message_unref(r)) == NULL);
test_link_get(rtnl, if_loopback);
assert(sd_rtnl_flush(rtnl) >= 0);
assert((m = sd_rtnl_message_unref(m)) == NULL);
assert((r = sd_rtnl_message_unref(r)) == NULL);
assert((rtnl = sd_rtnl_unref(rtnl)) == NULL);
return EXIT_SUCCESS;
}