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https://github.com/systemd/systemd.git
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libsystemd-network: split icm6-util.[ch] out of dhcp6 code
This commit is contained in:
parent
de1e9928f1
commit
940367a0ab
@ -3237,6 +3237,8 @@ libsystemd_network_la_SOURCES = \
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src/libsystemd-network/network-internal.c \
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src/libsystemd-network/network-internal.h \
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src/libsystemd-network/sd-ndisc.c \
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src/libsystemd-network/icmp6-util.h \
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src/libsystemd-network/icmp6-util.c \
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src/libsystemd-network/sd-dhcp6-client.c \
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src/libsystemd-network/dhcp6-internal.h \
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src/libsystemd-network/dhcp6-protocol.h \
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@ -3323,7 +3325,7 @@ test_pppoe_LDADD = \
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test_ndisc_rs_SOURCES = \
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src/systemd/sd-dhcp6-client.h \
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src/systemd/sd-ndisc.h \
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src/libsystemd-network/dhcp6-internal.h \
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src/libsystemd-network/icmp6-util.h \
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src/libsystemd-network/test-ndisc-rs.c \
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src/libsystemd-network/dhcp-identifier.h \
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src/libsystemd-network/dhcp-identifier.c
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@ -58,9 +58,6 @@ typedef struct DHCP6IA DHCP6IA;
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#define log_dhcp6_client(p, fmt, ...) log_internal(LOG_DEBUG, 0, __FILE__, __LINE__, __func__, "DHCPv6 CLIENT: " fmt, ##__VA_ARGS__)
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int dhcp_network_icmp6_bind_router_solicitation(int index);
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int dhcp_network_icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr);
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int dhcp6_option_append(uint8_t **buf, size_t *buflen, uint16_t code,
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size_t optlen, const void *optval);
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int dhcp6_option_append_ia(uint8_t **buf, size_t *buflen, DHCP6IA *ia);
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@ -25,7 +25,6 @@
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#include <stdio.h>
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#include <unistd.h>
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#include <netinet/ip6.h>
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#include <netinet/icmp6.h>
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#include <netinet/in.h>
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#include "socket-util.h"
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@ -33,102 +32,6 @@
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#include "dhcp6-internal.h"
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#include "dhcp6-protocol.h"
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#define IN6ADDR_ALL_ROUTERS_MULTICAST_INIT \
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{ { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 } } }
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#define IN6ADDR_ALL_NODES_MULTICAST_INIT \
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{ { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 } } }
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int dhcp_network_icmp6_bind_router_solicitation(int index) {
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struct icmp6_filter filter = { };
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struct ipv6_mreq mreq = {
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.ipv6mr_multiaddr = IN6ADDR_ALL_NODES_MULTICAST_INIT,
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.ipv6mr_interface = index,
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};
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_cleanup_close_ int s = -1;
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int r, zero = 0, hops = 255;
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s = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC | SOCK_NONBLOCK,
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IPPROTO_ICMPV6);
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if (s < 0)
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return -errno;
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ICMP6_FILTER_SETBLOCKALL(&filter);
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ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter);
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r = setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
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sizeof(filter));
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if (r < 0)
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return -errno;
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/* RFC 3315, section 6.7, bullet point 2 may indicate that an
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IPV6_PKTINFO socket option also applies for ICMPv6 multicast.
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Empirical experiments indicates otherwise and therefore an
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IPV6_MULTICAST_IF socket option is used here instead */
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r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &index,
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sizeof(index));
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if (r < 0)
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return -errno;
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r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &zero,
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sizeof(zero));
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if (r < 0)
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return -errno;
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r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hops,
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sizeof(hops));
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if (r < 0)
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return -errno;
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r = setsockopt(s, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq,
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sizeof(mreq));
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if (r < 0)
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return -errno;
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r = s;
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s = -1;
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return r;
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}
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int dhcp_network_icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
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struct sockaddr_in6 dst = {
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.sin6_family = AF_INET6,
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.sin6_addr = IN6ADDR_ALL_ROUTERS_MULTICAST_INIT,
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};
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struct {
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struct nd_router_solicit rs;
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struct nd_opt_hdr rs_opt;
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struct ether_addr rs_opt_mac;
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} _packed_ rs = {
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.rs.nd_rs_type = ND_ROUTER_SOLICIT,
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};
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struct iovec iov[1] = {
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{ &rs, },
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};
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struct msghdr msg = {
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.msg_name = &dst,
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.msg_namelen = sizeof(dst),
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.msg_iov = iov,
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.msg_iovlen = 1,
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};
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int r;
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if (ether_addr) {
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memcpy(&rs.rs_opt_mac, ether_addr, ETH_ALEN);
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rs.rs_opt.nd_opt_type = ND_OPT_SOURCE_LINKADDR;
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rs.rs_opt.nd_opt_len = 1;
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iov[0].iov_len = sizeof(rs);
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} else
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iov[0].iov_len = sizeof(rs.rs);
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r = sendmsg(s, &msg, 0);
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if (r < 0)
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return -errno;
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return 0;
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}
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int dhcp6_network_bind_udp_socket(int index, struct in6_addr *local_address) {
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struct in6_pktinfo pktinfo = {
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.ipi6_ifindex = index,
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129
src/libsystemd-network/icmp6-util.c
Normal file
129
src/libsystemd-network/icmp6-util.c
Normal file
@ -0,0 +1,129 @@
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/***
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This file is part of systemd.
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Copyright (C) 2014 Intel Corporation. All rights reserved.
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <string.h>
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#include <linux/if_packet.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <netinet/ip6.h>
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#include <netinet/icmp6.h>
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#include <netinet/in.h>
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#include "socket-util.h"
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#include "icmp6-util.h"
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#define IN6ADDR_ALL_ROUTERS_MULTICAST_INIT \
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{ { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 } } }
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#define IN6ADDR_ALL_NODES_MULTICAST_INIT \
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{ { { 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 } } }
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int icmp6_bind_router_solicitation(int index) {
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struct icmp6_filter filter = { };
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struct ipv6_mreq mreq = {
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.ipv6mr_multiaddr = IN6ADDR_ALL_NODES_MULTICAST_INIT,
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.ipv6mr_interface = index,
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};
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_cleanup_close_ int s = -1;
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int r, zero = 0, hops = 255;
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s = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC | SOCK_NONBLOCK,
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IPPROTO_ICMPV6);
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if (s < 0)
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return -errno;
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ICMP6_FILTER_SETBLOCKALL(&filter);
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ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filter);
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r = setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filter,
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sizeof(filter));
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if (r < 0)
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return -errno;
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/* RFC 3315, section 6.7, bullet point 2 may indicate that an
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IPV6_PKTINFO socket option also applies for ICMPv6 multicast.
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Empirical experiments indicates otherwise and therefore an
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IPV6_MULTICAST_IF socket option is used here instead */
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r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &index,
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sizeof(index));
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if (r < 0)
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return -errno;
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r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &zero,
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sizeof(zero));
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if (r < 0)
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return -errno;
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r = setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hops,
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sizeof(hops));
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if (r < 0)
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return -errno;
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r = setsockopt(s, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq,
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sizeof(mreq));
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if (r < 0)
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return -errno;
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r = s;
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s = -1;
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return r;
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}
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int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
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struct sockaddr_in6 dst = {
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.sin6_family = AF_INET6,
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.sin6_addr = IN6ADDR_ALL_ROUTERS_MULTICAST_INIT,
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};
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struct {
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struct nd_router_solicit rs;
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struct nd_opt_hdr rs_opt;
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struct ether_addr rs_opt_mac;
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} _packed_ rs = {
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.rs.nd_rs_type = ND_ROUTER_SOLICIT,
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};
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struct iovec iov[1] = {
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{ &rs, },
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};
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struct msghdr msg = {
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.msg_name = &dst,
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.msg_namelen = sizeof(dst),
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.msg_iov = iov,
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.msg_iovlen = 1,
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};
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int r;
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if (ether_addr) {
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memcpy(&rs.rs_opt_mac, ether_addr, ETH_ALEN);
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rs.rs_opt.nd_opt_type = ND_OPT_SOURCE_LINKADDR;
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rs.rs_opt.nd_opt_len = 1;
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iov[0].iov_len = sizeof(rs);
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} else
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iov[0].iov_len = sizeof(rs.rs);
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r = sendmsg(s, &msg, 0);
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if (r < 0)
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return -errno;
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return 0;
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}
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27
src/libsystemd-network/icmp6-util.h
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27
src/libsystemd-network/icmp6-util.h
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@ -0,0 +1,27 @@
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright (C) 2014-2015 Intel Corporation. All rights reserved.
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <net/ethernet.h>
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int icmp6_bind_router_solicitation(int index);
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int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr);
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@ -24,10 +24,11 @@
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#include <netinet/in.h>
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#include <sys/ioctl.h>
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#include "socket-util.h"
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#include "async.h"
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#include "list.h"
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#include "socket-util.h"
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#include "dhcp6-internal.h"
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#include "icmp6-util.h"
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#include "sd-ndisc.h"
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#define ICMP6_ROUTER_SOLICITATION_INTERVAL 4 * USEC_PER_SEC
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@ -613,7 +614,7 @@ static int icmp6_router_solicitation_timeout(sd_event_source *s, uint64_t usec,
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if (memcmp(&nd->mac_addr, &unset, sizeof(struct ether_addr)))
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addr = &nd->mac_addr;
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r = dhcp_network_icmp6_send_router_solicitation(nd->fd, addr);
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r = icmp6_send_router_solicitation(nd->fd, addr);
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if (r < 0)
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log_icmp6_nd(nd, "Error sending Router Solicitation");
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else {
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@ -681,7 +682,7 @@ int sd_ndisc_router_discovery_start(sd_ndisc *nd) {
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if (nd->index < 1)
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return -EINVAL;
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r = dhcp_network_icmp6_bind_router_solicitation(nd->index);
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r = icmp6_bind_router_solicitation(nd->index);
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if (r < 0)
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return r;
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@ -23,7 +23,7 @@
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#include "socket-util.h"
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#include "dhcp6-internal.h"
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#include "icmp6-util.h"
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#include "sd-ndisc.h"
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static struct ether_addr mac_addr = {
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@ -44,7 +44,7 @@ static int test_rs_hangcheck(sd_event_source *s, uint64_t usec,
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return 0;
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}
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int dhcp_network_icmp6_bind_router_solicitation(int index) {
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int icmp6_bind_router_solicitation(int index) {
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assert_se(index == 42);
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if (socketpair(AF_UNIX, SOCK_DGRAM, 0, test_fd) < 0)
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@ -266,7 +266,7 @@ static int send_ra(uint8_t flags) {
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return 0;
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}
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int dhcp_network_icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
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int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr) {
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return send_ra_function(0);
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}
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