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Diffstat (limited to 'newlib/libc/sys/linux/include/netinet/in_var.h')
| -rw-r--r-- | newlib/libc/sys/linux/include/netinet/in_var.h | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/include/netinet/in_var.h b/newlib/libc/sys/linux/include/netinet/in_var.h new file mode 100644 index 000000000..ce97b5a11 --- /dev/null +++ b/newlib/libc/sys/linux/include/netinet/in_var.h @@ -0,0 +1,243 @@ +/* + * Copyright (c) 1985, 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)in_var.h 8.2 (Berkeley) 1/9/95 + * $FreeBSD: src/sys/netinet/in_var.h,v 1.45 2002/03/24 10:19:10 bde Exp $ + */ + +#ifndef _NETINET_IN_VAR_H_ +#define _NETINET_IN_VAR_H_ + +#include <sys/queue.h> +#include <sys/fnv_hash.h> + +/* + * Interface address, Internet version. One of these structures + * is allocated for each Internet address on an interface. + * The ifaddr structure contains the protocol-independent part + * of the structure and is assumed to be first. + */ +struct in_ifaddr { + struct ifaddr ia_ifa; /* protocol-independent info */ +#define ia_ifp ia_ifa.ifa_ifp +#define ia_flags ia_ifa.ifa_flags + /* ia_{,sub}net{,mask} in host order */ + u_long ia_net; /* network number of interface */ + u_long ia_netmask; /* mask of net part */ + u_long ia_subnet; /* subnet number, including net */ + u_long ia_subnetmask; /* mask of subnet part */ + struct in_addr ia_netbroadcast; /* to recognize net broadcasts */ + LIST_ENTRY(in_ifaddr) ia_hash; /* entry in bucket of inet addresses */ + TAILQ_ENTRY(in_ifaddr) ia_link; /* list of internet addresses */ + struct sockaddr_in ia_addr; /* reserve space for interface name */ + struct sockaddr_in ia_dstaddr; /* reserve space for broadcast addr */ +#define ia_broadaddr ia_dstaddr + struct sockaddr_in ia_sockmask; /* reserve space for general netmask */ +}; + +struct in_aliasreq { + char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ + struct sockaddr_in ifra_addr; + struct sockaddr_in ifra_broadaddr; +#define ifra_dstaddr ifra_broadaddr + struct sockaddr_in ifra_mask; +}; +/* + * Given a pointer to an in_ifaddr (ifaddr), + * return a pointer to the addr as a sockaddr_in. + */ +#define IA_SIN(ia) (&(((struct in_ifaddr *)(ia))->ia_addr)) +#define IA_DSTSIN(ia) (&(((struct in_ifaddr *)(ia))->ia_dstaddr)) + +#define IN_LNAOF(in, ifa) \ + ((ntohl((in).s_addr) & ~((struct in_ifaddr *)(ifa)->ia_subnetmask)) + + +#ifdef _KERNEL +extern struct ifqueue ipintrq; /* ip packet input queue */ +extern struct in_addr zeroin_addr; +extern u_char inetctlerrmap[]; + +/* + * Hash table for IP addresses. + */ +extern LIST_HEAD(in_ifaddrhashhead, in_ifaddr) *in_ifaddrhashtbl; +extern TAILQ_HEAD(in_ifaddrhead, in_ifaddr) in_ifaddrhead; +extern u_long in_ifaddrhmask; /* mask for hash table */ + +#define INADDR_NHASH_LOG2 9 +#define INADDR_NHASH (1 << INADDR_NHASH_LOG2) +#define INADDR_HASHVAL(x) fnv_32_buf((&(x)), sizeof(x), FNV1_32_INIT) +#define INADDR_HASH(x) \ + (&in_ifaddrhashtbl[INADDR_HASHVAL(x) & in_ifaddrhmask]) + + +/* + * Macro for finding the interface (ifnet structure) corresponding to one + * of our IP addresses. + */ +#define INADDR_TO_IFP(addr, ifp) \ + /* struct in_addr addr; */ \ + /* struct ifnet *ifp; */ \ +{ \ + struct in_ifaddr *ia; \ +\ + LIST_FOREACH(ia, INADDR_HASH((addr).s_addr), ia_hash) \ + if (IA_SIN(ia)->sin_addr.s_addr == (addr).s_addr) \ + break; \ + (ifp) = (ia == NULL) ? NULL : ia->ia_ifp; \ +} + +/* + * Macro for finding the internet address structure (in_ifaddr) corresponding + * to a given interface (ifnet structure). + */ +#define IFP_TO_IA(ifp, ia) \ + /* struct ifnet *ifp; */ \ + /* struct in_ifaddr *ia; */ \ +{ \ + for ((ia) = TAILQ_FIRST(&in_ifaddrhead); \ + (ia) != NULL && (ia)->ia_ifp != (ifp); \ + (ia) = TAILQ_NEXT((ia), ia_link)) \ + continue; \ +} +#endif + +/* + * This information should be part of the ifnet structure but we don't wish + * to change that - as it might break a number of things + */ + +struct router_info { + struct ifnet *rti_ifp; + int rti_type; /* type of router which is querier on this interface */ + int rti_time; /* # of slow timeouts since last old query */ + struct router_info *rti_next; +}; + +/* + * Internet multicast address structure. There is one of these for each IP + * multicast group to which this host belongs on a given network interface. + * For every entry on the interface's if_multiaddrs list which represents + * an IP multicast group, there is one of these structures. They are also + * kept on a system-wide list to make it easier to keep our legacy IGMP code + * compatible with the rest of the world (see IN_FIRST_MULTI et al, below). + */ +struct in_multi { + LIST_ENTRY(in_multi) inm_link; /* queue macro glue */ + struct in_addr inm_addr; /* IP multicast address, convenience */ + struct ifnet *inm_ifp; /* back pointer to ifnet */ + struct ifmultiaddr *inm_ifma; /* back pointer to ifmultiaddr */ + u_int inm_timer; /* IGMP membership report timer */ + u_int inm_state; /* state of the membership */ + struct router_info *inm_rti; /* router info*/ +}; + +#ifdef _KERNEL + +#ifdef SYSCTL_DECL +SYSCTL_DECL(_net_inet_ip); +SYSCTL_DECL(_net_inet_raw); +#endif + +extern LIST_HEAD(in_multihead, in_multi) in_multihead; + +/* + * Structure used by macros below to remember position when stepping through + * all of the in_multi records. + */ +struct in_multistep { + struct in_multi *i_inm; +}; + +/* + * Macro for looking up the in_multi record for a given IP multicast address + * on a given interface. If no matching record is found, "inm" is set null. + */ +#define IN_LOOKUP_MULTI(addr, ifp, inm) \ + /* struct in_addr addr; */ \ + /* struct ifnet *ifp; */ \ + /* struct in_multi *inm; */ \ +do { \ + struct ifmultiaddr *ifma; \ +\ + TAILQ_FOREACH(ifma, &((ifp)->if_multiaddrs), ifma_link) { \ + if (ifma->ifma_addr->sa_family == AF_INET \ + && ((struct sockaddr_in *)ifma->ifma_addr)->sin_addr.s_addr == \ + (addr).s_addr) \ + break; \ + } \ + (inm) = ifma ? ifma->ifma_protospec : 0; \ +} while(0) + +/* + * Macro to step through all of the in_multi records, one at a time. + * The current position is remembered in "step", which the caller must + * provide. IN_FIRST_MULTI(), below, must be called to initialize "step" + * and get the first record. Both macros return a NULL "inm" when there + * are no remaining records. + */ +#define IN_NEXT_MULTI(step, inm) \ + /* struct in_multistep step; */ \ + /* struct in_multi *inm; */ \ +do { \ + if (((inm) = (step).i_inm) != NULL) \ + (step).i_inm = LIST_NEXT((step).i_inm, inm_link); \ +} while(0) + +#define IN_FIRST_MULTI(step, inm) \ + /* struct in_multistep step; */ \ + /* struct in_multi *inm; */ \ +do { \ + (step).i_inm = LIST_FIRST(&in_multihead); \ + IN_NEXT_MULTI((step), (inm)); \ +} while(0) + +struct route; +struct in_multi *in_addmulti(struct in_addr *, struct ifnet *); +void in_delmulti(struct in_multi *); +int in_control(struct socket *, u_long, caddr_t, struct ifnet *, + struct thread *); +void in_rtqdrain(void); +void ip_input(struct mbuf *); +int in_ifadown(struct ifaddr *ifa, int); +void in_ifscrub(struct ifnet *, struct in_ifaddr *); +int ipflow_fastforward(struct mbuf *); +void ipflow_create(const struct route *, struct mbuf *); +void ipflow_slowtimo(void); + +#endif /* _KERNEL */ + +/* INET6 stuff */ +#include <netinet6/in6_var.h> + +#endif /* _NETINET_IN_VAR_H_ */ |