src/test/test-netlink-manual.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <arpa/inet.h>
   4 #include <libkmod.h>
   5 #include <linux/ip.h>
   6 #include <net/if.h>
   7 #include <linux/if_tunnel.h>
   8
   9 #include "sd-netlink.h"
  10
  11 #include "macro.h"
  12 #include "module-util.h"
  13 #include "tests.h"
  14 #include "util.h"
  15
  16 static int load_module(const char *mod_name) {
  17         _cleanup_(kmod_unrefp) struct kmod_ctx *ctx = NULL;
  18         _cleanup_(kmod_module_unref_listp) struct kmod_list *list = NULL;
  19         struct kmod_list *l;
  20         int r;
  21
  22         ctx = kmod_new(NULL, NULL);
  23         if (!ctx)
  24                 return log_oom();
  25
  26         r = kmod_module_new_from_lookup(ctx, mod_name, &list);
  27         if (r < 0)
  28                 return r;
  29
  30         kmod_list_foreach(l, list) {
  31                 _cleanup_(kmod_module_unrefp) struct kmod_module *mod = NULL;
  32
  33                 mod = kmod_module_get_module(l);
  34
  35                 r = kmod_module_probe_insert_module(mod, 0, NULL, NULL, NULL, NULL);
  36                 if (r > 0)
  37                         r = -EINVAL;
  38         }
  39
  40         return r;
  41 }
  42
  43 static int test_tunnel_configure(sd_netlink *rtnl) {
  44         int r;
  45         sd_netlink_message *m, *n;
  46         struct in_addr local, remote;
  47
  48         /* skip test if module cannot be loaded */
  49         r = load_module("ipip");
  50         if (r < 0)
  51                 return log_tests_skipped_errno(r, "failed to load module 'ipip'");
  52
  53         r = load_module("sit");
  54         if (r < 0)
  55                 return log_tests_skipped_errno(r, "failed to load module 'sit'");
  56
  57         if (getuid() != 0)
  58                 return log_tests_skipped("not root");
  59
  60         /* IPIP tunnel */
  61         assert_se(sd_rtnl_message_new_link(rtnl, &m, RTM_NEWLINK, 0) >= 0);
  62         assert_se(m);
  63
  64         assert_se(sd_netlink_message_append_string(m, IFLA_IFNAME, "ipip-tunnel") >= 0);
  65         assert_se(sd_netlink_message_append_u32(m, IFLA_MTU, 1234)>= 0);
  66
  67         assert_se(sd_netlink_message_open_container(m, IFLA_LINKINFO) >= 0);
  68
  69         assert_se(sd_netlink_message_open_container_union(m, IFLA_INFO_DATA, "ipip") >= 0);
  70
  71         inet_pton(AF_INET, "192.168.21.1", &local.s_addr);
  72         assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
  73
  74         inet_pton(AF_INET, "192.168.21.2", &remote.s_addr);
  75         assert_se(sd_netlink_message_append_u32(m, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
  76
  77         assert_se(sd_netlink_message_close_container(m) >= 0);
  78         assert_se(sd_netlink_message_close_container(m) >= 0);
  79
  80         assert_se(sd_netlink_call(rtnl, m, -1, 0) == 1);
  81
  82         assert_se((m = sd_netlink_message_unref(m)) == NULL);
  83
  84         /* sit */
  85         assert_se(sd_rtnl_message_new_link(rtnl, &n, RTM_NEWLINK, 0) >= 0);
  86         assert_se(n);
  87
  88         assert_se(sd_netlink_message_append_string(n, IFLA_IFNAME, "sit-tunnel") >= 0);
  89         assert_se(sd_netlink_message_append_u32(n, IFLA_MTU, 1234)>= 0);
  90
  91         assert_se(sd_netlink_message_open_container(n, IFLA_LINKINFO) >= 0);
  92
  93         assert_se(sd_netlink_message_open_container_union(n, IFLA_INFO_DATA, "sit") >= 0);
  94
  95         assert_se(sd_netlink_message_append_u8(n, IFLA_IPTUN_PROTO, IPPROTO_IPIP) >= 0);
  96
  97         inet_pton(AF_INET, "192.168.21.3", &local.s_addr);
  98         assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_LOCAL, local.s_addr) >= 0);
  99
 100         inet_pton(AF_INET, "192.168.21.4", &remote.s_addr);
 101         assert_se(sd_netlink_message_append_u32(n, IFLA_IPTUN_REMOTE, remote.s_addr) >= 0);
 102
 103         assert_se(sd_netlink_message_close_container(n) >= 0);
 104         assert_se(sd_netlink_message_close_container(n) >= 0);
 105
 106         assert_se(sd_netlink_call(rtnl, n, -1, 0) == 1);
 107
 108         assert_se((n = sd_netlink_message_unref(n)) == NULL);
 109
 110         return EXIT_SUCCESS;
 111 }
 112
 113 int main(int argc, char *argv[]) {
 114         sd_netlink *rtnl;
 115         int r;
 116
 117         test_setup_logging(LOG_INFO);
 118
 119         assert_se(sd_netlink_open(&rtnl) >= 0);
 120         assert_se(rtnl);
 121
 122         r = test_tunnel_configure(rtnl);
 123
 124         assert_se((rtnl = sd_netlink_unref(rtnl)) == NULL);
 125
 126         return r;
 127 }