]>
Commit | Line | Data |
---|---|---|
db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
e3169126 | 2 | /*** |
810adae9 | 3 | Copyright © 2014 Intel Corporation. All rights reserved. |
e3169126 PF |
4 | ***/ |
5 | ||
6 | #include <errno.h> | |
3ffd4af2 LP |
7 | #include <netinet/in.h> |
8 | #include <netinet/ip6.h> | |
e3169126 | 9 | #include <stdio.h> |
3ffd4af2 | 10 | #include <string.h> |
3ffd4af2 | 11 | #include <sys/types.h> |
e3169126 | 12 | #include <unistd.h> |
3ffd4af2 | 13 | #include <linux/if_packet.h> |
e3169126 PF |
14 | |
15 | #include "dhcp6-internal.h" | |
34e8c5a2 | 16 | #include "dhcp6-protocol.h" |
3ffd4af2 LP |
17 | #include "fd-util.h" |
18 | #include "socket-util.h" | |
e3169126 | 19 | |
dea17a08 | 20 | int dhcp6_network_bind_udp_socket(int ifindex, const struct in6_addr *local_address) { |
34e8c5a2 PF |
21 | union sockaddr_union src = { |
22 | .in6.sin6_family = AF_INET6, | |
dea17a08 | 23 | .in6.sin6_addr = *ASSERT_PTR(local_address), |
34e8c5a2 | 24 | .in6.sin6_port = htobe16(DHCP6_PORT_CLIENT), |
1a6c9136 | 25 | .in6.sin6_scope_id = ifindex, |
34e8c5a2 | 26 | }; |
5bb1d7fb | 27 | _cleanup_close_ int s = -EBADF; |
6d5e65f6 | 28 | int r; |
34e8c5a2 | 29 | |
1a6c9136 | 30 | assert(ifindex > 0); |
34e8c5a2 | 31 | |
6506063f | 32 | s = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK, IPPROTO_UDP); |
34e8c5a2 PF |
33 | if (s < 0) |
34 | return -errno; | |
35 | ||
2ff48e98 | 36 | r = setsockopt_int(s, IPPROTO_IPV6, IPV6_V6ONLY, true); |
34e8c5a2 | 37 | if (r < 0) |
2ff48e98 | 38 | return r; |
34e8c5a2 | 39 | |
2ff48e98 | 40 | r = setsockopt_int(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, false); |
34e8c5a2 | 41 | if (r < 0) |
2ff48e98 | 42 | return r; |
34e8c5a2 | 43 | |
2ff48e98 | 44 | r = setsockopt_int(s, SOL_SOCKET, SO_REUSEADDR, true); |
6506063f | 45 | if (r < 0) |
2ff48e98 | 46 | return r; |
6506063f | 47 | |
653ddc1d YW |
48 | r = setsockopt_int(s, SOL_SOCKET, SO_TIMESTAMP, true); |
49 | if (r < 0) | |
50 | return r; | |
51 | ||
34e8c5a2 PF |
52 | r = bind(s, &src.sa, sizeof(src.in6)); |
53 | if (r < 0) | |
54 | return -errno; | |
55 | ||
c10d6bdb | 56 | return TAKE_FD(s); |
34e8c5a2 PF |
57 | } |
58 | ||
dea17a08 | 59 | int dhcp6_network_send_udp_socket(int s, const struct in6_addr *server_address, const void *packet, size_t len) { |
34e8c5a2 PF |
60 | union sockaddr_union dest = { |
61 | .in6.sin6_family = AF_INET6, | |
dea17a08 | 62 | .in6.sin6_addr = *ASSERT_PTR(server_address), |
34e8c5a2 PF |
63 | .in6.sin6_port = htobe16(DHCP6_PORT_SERVER), |
64 | }; | |
34e8c5a2 | 65 | |
dea17a08 | 66 | if (sendto(s, packet, len, 0, &dest.sa, sizeof(dest.in6)) < 0) |
34e8c5a2 PF |
67 | return -errno; |
68 | ||
69 | return 0; | |
70 | } |