icmp6-util: merge icmp6_bind_router_{solicitation,advertisement}() into icmp6_bind()

[thirdparty/systemd.git] / src / libsystemd-network / icmp6-util-unix.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <netinet/ip6.h>
#include <unistd.h>

#include "fd-util.h"
#include "icmp6-util-unix.h"

send_ra_t send_ra_function = NULL;
int test_fd[2] = EBADF_PAIR;

static struct in6_addr dummy_link_local = {
        .s6_addr = {
                0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                0x12, 0x34, 0x56, 0xff, 0xfe, 0x78, 0x9a, 0xbc,
        },
};

int icmp6_bind(int ifindex, bool is_router) {
        if (!is_router && socketpair(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, 0, test_fd) < 0)
                return -errno;

        return test_fd[is_router];
}

int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
        if (!send_ra_function)
                return 0;

        return send_ra_function(0);
}

int icmp6_receive(
                int fd,
                void *iov_base,
                size_t iov_len,
                struct in6_addr *ret_sender,
                triple_timestamp *ret_timestamp) {

        assert_se(read (fd, iov_base, iov_len) == (ssize_t) iov_len);

        if (ret_timestamp)
                triple_timestamp_now(ret_timestamp);

        if (ret_sender)
                *ret_sender = dummy_link_local;

        return 0;
}