Samuel Tan | d7ed851 | 2015-08-13 16:11:35 -0700 | [diff] [blame] | 1 | /* |
| 2 | * dhcpcd - DHCP client daemon |
| 3 | * Copyright (c) 2006-2015 Roy Marples <roy@marples.name> |
| 4 | * All rights reserved |
| 5 | |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 | * SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifndef INTERFACE_H |
| 29 | #define INTERFACE_H |
| 30 | |
| 31 | #include <net/if.h> |
| 32 | #ifdef __FreeBSD__ |
| 33 | #include <net/if_var.h> |
| 34 | #endif |
| 35 | #include <net/route.h> /* for RTM_ADD et all */ |
| 36 | #include <netinet/in.h> |
| 37 | #ifdef BSD |
| 38 | #include <netinet/in_var.h> /* for IN_IFF_TENTATIVE et all */ |
| 39 | #endif |
| 40 | |
| 41 | /* Some systems have route metrics. |
| 42 | * OpenBSD route priority is not this. */ |
| 43 | #ifndef HAVE_ROUTE_METRIC |
| 44 | # if defined(__linux__) |
| 45 | # define HAVE_ROUTE_METRIC 1 |
| 46 | # endif |
| 47 | #endif |
| 48 | |
| 49 | /* Some systems have in-built IPv4 DAD. |
| 50 | * However, we need them to do DAD at carrier up as well. */ |
| 51 | #ifdef IN_IFF_TENTATIVE |
| 52 | # ifdef __NetBSD__ |
| 53 | # define NOCARRIER_PRESERVE_IP |
| 54 | # endif |
| 55 | #endif |
| 56 | |
| 57 | #include "config.h" |
| 58 | #include "dhcpcd.h" |
| 59 | #include "ipv4.h" |
| 60 | #include "ipv6.h" |
| 61 | |
| 62 | #define EUI64_ADDR_LEN 8 |
| 63 | #define INFINIBAND_ADDR_LEN 20 |
| 64 | |
| 65 | /* Linux 2.4 doesn't define this */ |
| 66 | #ifndef ARPHRD_IEEE1394 |
| 67 | # define ARPHRD_IEEE1394 24 |
| 68 | #endif |
| 69 | |
| 70 | /* The BSD's don't define this yet */ |
| 71 | #ifndef ARPHRD_INFINIBAND |
| 72 | # define ARPHRD_INFINIBAND 32 |
| 73 | #endif |
| 74 | |
| 75 | /* Work out if we have a private address or not |
| 76 | * 10/8 |
| 77 | * 172.16/12 |
| 78 | * 192.168/16 |
| 79 | */ |
| 80 | #ifndef IN_PRIVATE |
| 81 | # define IN_PRIVATE(addr) (((addr & IN_CLASSA_NET) == 0x0a000000) || \ |
| 82 | ((addr & 0xfff00000) == 0xac100000) || \ |
| 83 | ((addr & IN_CLASSB_NET) == 0xc0a80000)) |
| 84 | #endif |
| 85 | |
| 86 | #define LINKLOCAL_ADDR 0xa9fe0000 |
| 87 | #define LINKLOCAL_MASK IN_CLASSB_NET |
| 88 | #define LINKLOCAL_BRDC (LINKLOCAL_ADDR | ~LINKLOCAL_MASK) |
| 89 | |
| 90 | #ifndef IN_LINKLOCAL |
| 91 | # define IN_LINKLOCAL(addr) ((addr & IN_CLASSB_NET) == LINKLOCAL_ADDR) |
| 92 | #endif |
| 93 | |
| 94 | #define RAW_EOF 1 << 0 |
| 95 | #define RAW_PARTIALCSUM 2 << 0 |
| 96 | |
| 97 | int if_setflag(struct interface *ifp, short flag); |
| 98 | #define if_up(ifp) if_setflag((ifp), (IFF_UP | IFF_RUNNING)) |
| 99 | struct if_head *if_discover(struct dhcpcd_ctx *, int, char * const *); |
| 100 | struct interface *if_find(struct if_head *, const char *); |
| 101 | struct interface *if_findindex(struct if_head *, unsigned int); |
| 102 | void if_sortinterfaces(struct dhcpcd_ctx *); |
| 103 | void if_free(struct interface *); |
| 104 | int if_domtu(const char *, short int); |
| 105 | #define if_getmtu(iface) if_domtu(iface, 0) |
| 106 | #define if_setmtu(iface, mtu) if_domtu(iface, mtu) |
| 107 | int if_carrier(struct interface *); |
Samuel Tan | a359582 | 2015-08-13 16:41:21 -0700 | [diff] [blame] | 108 | int split_interface_lease(const char *ifname, int *ifname_len, |
| 109 | const char **lease_identifier); |
Samuel Tan | d7ed851 | 2015-08-13 16:11:35 -0700 | [diff] [blame] | 110 | |
| 111 | /* The below functions are provided by if-KERNEL.c */ |
| 112 | int if_conf(struct interface *); |
| 113 | int if_init(struct interface *); |
| 114 | int if_getssid(struct interface *); |
| 115 | int if_vimaster(const char *); |
| 116 | int if_openlinksocket(void); |
| 117 | int if_managelink(struct dhcpcd_ctx *); |
| 118 | |
| 119 | /* dhcpcd uses the same routing flags as BSD. |
| 120 | * If the platform doesn't use these flags, |
| 121 | * map them in the platform interace file. */ |
| 122 | #ifndef RTM_ADD |
| 123 | #define RTM_ADD 0x1 /* Add Route */ |
| 124 | #define RTM_DELETE 0x2 /* Delete Route */ |
| 125 | #define RTM_CHANGE 0x3 /* Change Metrics or flags */ |
| 126 | #define RTM_GET 0x4 /* Report Metrics */ |
| 127 | #endif |
| 128 | |
| 129 | #ifdef INET |
| 130 | extern const char *if_pfname; |
| 131 | int if_openrawsocket(struct interface *, uint16_t); |
| 132 | ssize_t if_sendrawpacket(const struct interface *, |
Samuel Tan | f20514b | 2015-08-13 16:24:02 -0700 | [diff] [blame] | 133 | uint16_t, const void *, size_t, const uint8_t *dest_hw_addr); |
Samuel Tan | d7ed851 | 2015-08-13 16:11:35 -0700 | [diff] [blame] | 134 | ssize_t if_readrawpacket(struct interface *, uint16_t, void *, size_t, int *); |
| 135 | |
| 136 | int if_address(const struct interface *, |
| 137 | const struct in_addr *, const struct in_addr *, |
| 138 | const struct in_addr *, int); |
| 139 | #define if_addaddress(ifp, addr, net, brd) \ |
| 140 | if_address(ifp, addr, net, brd, 1) |
| 141 | #define if_deladdress(ifp, addr, net) \ |
| 142 | if_address(ifp, addr, net, NULL, -1) |
| 143 | |
| 144 | int if_addrflags(const struct in_addr *, const struct interface *); |
| 145 | |
| 146 | int if_route(unsigned char, const struct rt *rt); |
| 147 | int if_initrt(struct interface *); |
| 148 | #endif |
| 149 | |
| 150 | #ifdef INET6 |
| 151 | int if_checkipv6(struct dhcpcd_ctx *ctx, const struct interface *, int); |
| 152 | #ifdef IPV6_MANAGETEMPADDR |
| 153 | int ip6_use_tempaddr(const char *ifname); |
| 154 | int ip6_temp_preferred_lifetime(const char *ifname); |
| 155 | int ip6_temp_valid_lifetime(const char *ifname); |
| 156 | #else |
| 157 | #define ip6_use_tempaddr(a) (0) |
| 158 | #endif |
| 159 | |
| 160 | int if_address6(const struct ipv6_addr *, int); |
| 161 | #define if_addaddress6(a) if_address6(a, 1) |
| 162 | #define if_deladdress6(a) if_address6(a, -1) |
| 163 | |
| 164 | int if_addrflags6(const struct in6_addr *, const struct interface *); |
| 165 | int if_getlifetime6(struct ipv6_addr *); |
| 166 | |
| 167 | int if_route6(unsigned char, const struct rt6 *rt); |
| 168 | int if_initrt6(struct interface *); |
| 169 | #else |
| 170 | #define if_checkipv6(a, b, c) (-1) |
| 171 | #endif |
| 172 | |
| 173 | int if_machinearch(char *, size_t); |
| 174 | #endif |