mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
synced 2025-12-28 06:20:10 +01:00
134 lines
3.1 KiB
C
134 lines
3.1 KiB
C
#pragma once
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/*
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* Test Helpers
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* Bunch of helpers to setup the environment for networking tests. This
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* includes net-namespace setups, veth setups, and more.
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*/
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#include <assert.h>
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#include <endian.h>
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#include <errno.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <poll.h>
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#include <sched.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include "n-acd.h"
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static inline void test_add_child_ip(const struct in_addr *addr) {
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char *p;
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int r;
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r = asprintf(&p, "ip addr add dev veth1 %s/8", inet_ntoa(*addr));
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assert(r >= 0);
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r = system(p);
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assert(r >= 0);
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free(p);
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}
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static inline void test_del_child_ip(const struct in_addr *addr) {
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char *p;
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int r;
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r = asprintf(&p, "ip addr del dev veth1 %s/8", inet_ntoa(*addr));
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assert(r >= 0);
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r = system(p);
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assert(r >= 0);
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free(p);
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}
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static inline void test_if_query(const char *name, int *indexp, struct ether_addr *macp) {
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struct ifreq ifr = {};
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size_t l;
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int r, s;
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l = strlen(name);
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assert(l <= IF_NAMESIZE);
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if (indexp) {
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*indexp = if_nametoindex(name);
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assert(*indexp > 0);
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}
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if (macp) {
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s = socket(AF_INET, SOCK_DGRAM, 0);
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assert(s >= 0);
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strncpy(ifr.ifr_name, name, l + 1);
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r = ioctl(s, SIOCGIFHWADDR, &ifr);
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assert(r >= 0);
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memcpy(macp->ether_addr_octet, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
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close(s);
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}
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}
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static inline void test_veth_cmd(int ifindex, const char *cmd) {
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char *p, name[IF_NAMESIZE + 1] = {};
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int r;
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p = if_indextoname(ifindex, name);
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assert(p);
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r = asprintf(&p, "ip link set %s %s", name, cmd);
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assert(r >= 0);
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/* Again: Ewwww... */
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r = system(p);
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assert(r == 0);
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free(p);
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}
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static inline void test_veth_new(int *parent_indexp,
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struct ether_addr *parent_macp,
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int *child_indexp,
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struct ether_addr *child_macp) {
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int r;
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/* Eww... but it works. */
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r = system("ip link add type veth");
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assert(r == 0);
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r = system("ip link set veth0 up");
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assert(r == 0);
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r = system("ip link set veth1 up");
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assert(r == 0);
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test_if_query("veth0", parent_indexp, parent_macp);
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test_if_query("veth1", child_indexp, child_macp);
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}
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static inline void test_loopback_up(int *indexp, struct ether_addr *macp) {
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int r;
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r = system("ip link set lo up");
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assert(r == 0);
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test_if_query("lo", indexp, macp);
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}
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static inline int test_setup(void) {
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int r;
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r = unshare(CLONE_NEWNET);
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if (r < 0) {
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assert(errno == EPERM);
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return 77;
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}
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return 0;
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}
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