src/libsystemd-network/icmp6-util-unix.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <netinet/ip6.h>
   4 #include <unistd.h>
   5
   6 #include "fd-util.h"
   7 #include "icmp6-util-unix.h"
   8
   9 send_ra_t send_ra_function = NULL;
  10 int test_fd[2] = EBADF_PAIR;
  11
  12 static struct in6_addr dummy_link_local = {
  13         .s6_addr = {
  14                 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  15                 0x12, 0x34, 0x56, 0xff, 0xfe, 0x78, 0x9a, 0xbc,
  16         },
  17 };
  18
  19 int icmp6_bind(int ifindex, bool is_router) {
  20         if (!is_router && socketpair(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) < 0)
  21                 return -errno;
  22
  23         return test_fd[is_router];
  24 }
  25
  26 int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
  27         if (!send_ra_function)
  28                 return 0;
  29
  30         return send_ra_function(0);
  31 }
  32
  33 int icmp6_receive(
  34                 int fd,
  35                 void *iov_base,
  36                 size_t iov_len,
  37                 struct in6_addr *ret_sender,
  38                 triple_timestamp *ret_timestamp) {
  39
  40         assert_se(read (fd, iov_base, iov_len) == (ssize_t) iov_len);
  41
  42         if (ret_timestamp)
  43                 triple_timestamp_now(ret_timestamp);
  44
  45         if (ret_sender)
  46                 *ret_sender = dummy_link_local;
  47
  48         return 0;
  49 }