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 IPV4_H 29 #define IPV4_H 30 31 #include "dhcpcd.h" 32 33 #ifdef IN_IFF_TENTATIVE 34 #define IN_IFF_NOTUSEABLE \ 35 (IN_IFF_TENTATIVE | IN_IFF_DUPLICATED | IN_IFF_DETACHED) 36 #endif 37 38 struct rt { 39 TAILQ_ENTRY(rt) next; 40 struct in_addr dest; 41 struct in_addr net; 42 struct in_addr gate; 43 const struct interface *iface; 44 #ifdef HAVE_ROUTE_METRIC 45 unsigned int metric; 46 #endif 47 struct in_addr src; 48 unsigned int flags; 49 }; 50 TAILQ_HEAD(rt_head, rt); 51 52 struct ipv4_addr { 53 TAILQ_ENTRY(ipv4_addr) next; 54 struct in_addr addr; 55 struct in_addr net; 56 struct in_addr dst; 57 struct interface *iface; 58 int addr_flags; 59 }; 60 TAILQ_HEAD(ipv4_addrhead, ipv4_addr); 61 62 struct ipv4_state { 63 struct ipv4_addrhead addrs; 64 struct rt_head routes; 65 }; 66 67 #define IPV4_STATE(ifp) \ 68 ((struct ipv4_state *)(ifp)->if_data[IF_DATA_IPV4]) 69 #define IPV4_CSTATE(ifp) \ 70 ((const struct ipv4_state *)(ifp)->if_data[IF_DATA_IPV4]) 71 72 #ifdef INET 73 int ipv4_init(struct dhcpcd_ctx *); 74 int ipv4_ifcmp(const struct interface *, const struct interface *); 75 uint8_t inet_ntocidr(struct in_addr); 76 int inet_cidrtoaddr(int, struct in_addr *); 77 uint32_t ipv4_getnetmask(uint32_t); 78 int ipv4_addrexists(struct dhcpcd_ctx *, const struct in_addr *); 79 80 #define STATE_ADDED 0x01 81 #define STATE_FAKE 0x02 82 83 void ipv4_buildroutes(struct dhcpcd_ctx *); 84 void ipv4_finaliseaddr(struct interface *); 85 int ipv4_deladdr(struct interface *ifp, const struct in_addr *, 86 const struct in_addr *); 87 void ipv4_applyaddr(void *); 88 int ipv4_handlert(struct dhcpcd_ctx *, int, struct rt *); 89 void ipv4_freerts(struct rt_head *); 90 91 struct ipv4_addr *ipv4_iffindaddr(struct interface *, 92 const struct in_addr *, const struct in_addr *); 93 struct ipv4_addr *ipv4_iffindlladdr(struct interface *); 94 struct ipv4_addr *ipv4_findaddr(struct dhcpcd_ctx *, const struct in_addr *); 95 void ipv4_handleifa(struct dhcpcd_ctx *, int, struct if_head *, const char *, 96 const struct in_addr *, const struct in_addr *, const struct in_addr *, 97 int); 98 99 void ipv4_freeroutes(struct rt_head *); 100 101 void ipv4_free(struct interface *); 102 void ipv4_ctxfree(struct dhcpcd_ctx *); 103 #else 104 #define ipv4_init(a) (-1) 105 #define ipv4_sortinterfaces(a) {} 106 #define ipv4_applyaddr(a) {} 107 #define ipv4_freeroutes(a) {} 108 #define ipv4_free(a) {} 109 #define ipv4_ctxfree(a) {} 110 #define ipv4_addrexists(a, b) (0) 111 #endif 112 113 #endif 114