diff options
Diffstat (limited to 'src/libsystemd-network/icmp6-util.c')
| -rw-r--r-- | src/libsystemd-network/icmp6-util.c | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/src/libsystemd-network/icmp6-util.c b/src/libsystemd-network/icmp6-util.c deleted file mode 100644 index c2e4b0e9e3..0000000000 --- a/src/libsystemd-network/icmp6-util.c +++ /dev/null @@ -1,141 +0,0 @@ -/*** - This file is part of systemd. - - Copyright (C) 2014 Intel Corporation. All rights reserved. - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <netinet/icmp6.h> -#include <netinet/in.h> -#include <netinet/ip6.h> -#include <stdio.h> -#include <string.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> -#include <net/if.h> -#include <linux/if_packet.h> - -#include "fd-util.h" -#include "icmp6-util.h" -#include "socket-util.h" - -#define IN6ADDR_ALL_ROUTERS_MULTICAST_INIT \ - { { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 } } } - -#define IN6ADDR_ALL_NODES_MULTICAST_INIT \ - { { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 } } } - -int icmp6_bind_router_solicitation(int index) { - struct icmp6_filter filter = { }; - struct ipv6_mreq mreq = { - .ipv6mr_multiaddr = IN6ADDR_ALL_NODES_MULTICAST_INIT, - .ipv6mr_interface = index, - }; - _cleanup_close_ int s = -1; - char ifname[IF_NAMESIZE] = ""; - static const int zero = 0, one = 1, hops = 255; - int r; - - s = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC | SOCK_NONBLOCK, IPPROTO_ICMPV6); - if (s < 0) - return -errno; - - ICMP6_FILTER_SETBLOCKALL(&filter); - ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter); - r = setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filter, sizeof(filter)); - if (r < 0) - return -errno; - - /* RFC 3315, section 6.7, bullet point 2 may indicate that an - IPV6_PKTINFO socket option also applies for ICMPv6 multicast. - Empirical experiments indicates otherwise and therefore an - IPV6_MULTICAST_IF socket option is used here instead */ - r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &index, sizeof(index)); - if (r < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &zero, sizeof(zero)); - if (r < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hops, sizeof(hops)); - if (r < 0) - return -errno; - - r = setsockopt(s, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq, sizeof(mreq)); - if (r < 0) - return -errno; - - r = setsockopt(s, SOL_IPV6, IPV6_RECVHOPLIMIT, &one, sizeof(one)); - if (r < 0) - return -errno; - - r = setsockopt(s, SOL_SOCKET, SO_TIMESTAMP, &one, sizeof(one)); - if (r < 0) - return -errno; - - if (if_indextoname(index, ifname) == 0) - return -errno; - - r = setsockopt(s, SOL_SOCKET, SO_BINDTODEVICE, ifname, strlen(ifname)); - if (r < 0) - return -errno; - - r = s; - s = -1; - return r; -} - -int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) { - struct sockaddr_in6 dst = { - .sin6_family = AF_INET6, - .sin6_addr = IN6ADDR_ALL_ROUTERS_MULTICAST_INIT, - }; - struct { - struct nd_router_solicit rs; - struct nd_opt_hdr rs_opt; - struct ether_addr rs_opt_mac; - } _packed_ rs = { - .rs.nd_rs_type = ND_ROUTER_SOLICIT, - .rs_opt.nd_opt_type = ND_OPT_SOURCE_LINKADDR, - .rs_opt.nd_opt_len = 1, - }; - struct iovec iov = { - .iov_base = &rs, - .iov_len = sizeof(rs), - }; - struct msghdr msg = { - .msg_name = &dst, - .msg_namelen = sizeof(dst), - .msg_iov = &iov, - .msg_iovlen = 1, - }; - int r; - - assert(s >= 0); - assert(ether_addr); - - rs.rs_opt_mac = *ether_addr; - - r = sendmsg(s, &msg, 0); - if (r < 0) - return -errno; - - return 0; -} |