diff options
Diffstat (limited to 'newlib/libc/sys/linux/include/net/if_var.h')
| -rw-r--r-- | newlib/libc/sys/linux/include/net/if_var.h | 469 |
1 files changed, 0 insertions, 469 deletions
diff --git a/newlib/libc/sys/linux/include/net/if_var.h b/newlib/libc/sys/linux/include/net/if_var.h deleted file mode 100644 index cc53626ba..000000000 --- a/newlib/libc/sys/linux/include/net/if_var.h +++ /dev/null @@ -1,469 +0,0 @@ -/* - * Copyright (c) 1982, 1986, 1989, 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. - * - * From: @(#)if.h 8.1 (Berkeley) 6/10/93 - * $FreeBSD: src/sys/net/if_var.h,v 1.46 2002/05/07 18:11:55 imp Exp $ - */ - -#ifndef _NET_IF_VAR_H_ -#define _NET_IF_VAR_H_ - -/* - * Structures defining a network interface, providing a packet - * transport mechanism (ala level 0 of the PUP protocols). - * - * Each interface accepts output datagrams of a specified maximum - * length, and provides higher level routines with input datagrams - * received from its medium. - * - * Output occurs when the routine if_output is called, with three parameters: - * (*ifp->if_output)(ifp, m, dst, rt) - * Here m is the mbuf chain to be sent and dst is the destination address. - * The output routine encapsulates the supplied datagram if necessary, - * and then transmits it on its medium. - * - * On input, each interface unwraps the data received by it, and either - * places it on the input queue of a internetwork datagram routine - * and posts the associated software interrupt, or passes the datagram to a raw - * packet input routine. - * - * Routines exist for locating interfaces by their addresses - * or for locating a interface on a certain network, as well as more general - * routing and gateway routines maintaining information used to locate - * interfaces. These routines live in the files if.c and route.c - */ - -#ifdef __STDC__ -/* - * Forward structure declarations for function prototypes [sic]. - */ -struct mbuf; -struct thread; -struct rtentry; -struct rt_addrinfo; -struct socket; -struct ether_header; -#endif - -#include <sys/queue.h> /* get TAILQ macros */ - -#ifdef _KERNEL -#include <sys/mbuf.h> -#include <sys/systm.h> /* XXX */ -#endif /* _KERNEL */ -#include <sys/lock.h> /* XXX */ -#include <sys/mutex.h> /* XXX */ -#include <sys/event.h> /* XXX */ - -TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ -TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ -TAILQ_HEAD(ifprefixhead, ifprefix); -TAILQ_HEAD(ifmultihead, ifmultiaddr); - -/* - * Structure defining a queue for a network interface. - */ -struct ifqueue { - struct mbuf *ifq_head; - struct mbuf *ifq_tail; - int ifq_len; - int ifq_maxlen; - int ifq_drops; - struct mtx ifq_mtx; -}; - -/* - * Structure defining a network interface. - * - * (Would like to call this struct ``if'', but C isn't PL/1.) - */ - -/* - * NB: For FreeBSD, it is assumed that each NIC driver's softc starts with - * one of these structures, typically held within an arpcom structure. - * - * struct <foo>_softc { - * struct arpcom { - * struct ifnet ac_if; - * ... - * } <arpcom> ; - * ... - * }; - * - * The assumption is used in a number of places, including many - * files in sys/net, device drivers, and sys/dev/mii.c:miibus_attach(). - * - * Unfortunately devices' softc are opaque, so we depend on this layout - * to locate the struct ifnet from the softc in the generic code. - * - */ -struct ifnet { - void *if_softc; /* pointer to driver state */ - char *if_name; /* name, e.g. ``en'' or ``lo'' */ - TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ - struct ifaddrhead if_addrhead; /* linked list of addresses per if */ - struct klist if_klist; /* events attached to this if */ - int if_pcount; /* number of promiscuous listeners */ - struct bpf_if *if_bpf; /* packet filter structure */ - u_short if_index; /* numeric abbreviation for this if */ - short if_unit; /* sub-unit for lower level driver */ - short if_timer; /* time 'til if_watchdog called */ - short if_flags; /* up/down, broadcast, etc. */ - int if_capabilities; /* interface capabilities */ - int if_capenable; /* enabled features */ - int if_ipending; /* interrupts pending */ - void *if_linkmib; /* link-type-specific MIB data */ - size_t if_linkmiblen; /* length of above data */ - struct if_data if_data; - struct ifmultihead if_multiaddrs; /* multicast addresses configured */ - int if_amcount; /* number of all-multicast requests */ -/* procedure handles */ - int (*if_output) /* output routine (enqueue) */ - (struct ifnet *, struct mbuf *, struct sockaddr *, - struct rtentry *); - void (*if_start) /* initiate output routine */ - (struct ifnet *); - int (*if_done) /* output complete routine */ - (struct ifnet *); /* (XXX not used; fake prototype) */ - int (*if_ioctl) /* ioctl routine */ - (struct ifnet *, u_long, caddr_t); - void (*if_watchdog) /* timer routine */ - (struct ifnet *); - int (*if_poll_recv) /* polled receive routine */ - (struct ifnet *, int *); - int (*if_poll_xmit) /* polled transmit routine */ - (struct ifnet *, int *); - void (*if_poll_intren) /* polled interrupt reenable routine */ - (struct ifnet *); - void (*if_poll_slowinput) /* input routine for slow devices */ - (struct ifnet *, struct mbuf *); - void (*if_init) /* Init routine */ - (void *); - int (*if_resolvemulti) /* validate/resolve multicast */ - (struct ifnet *, struct sockaddr **, struct sockaddr *); - struct ifqueue if_snd; /* output queue */ - struct ifqueue *if_poll_slowq; /* input queue for slow devices */ - struct ifprefixhead if_prefixhead; /* list of prefixes per if */ - u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ -}; - -typedef void if_init_f_t(void *); - -#define if_mtu if_data.ifi_mtu -#define if_type if_data.ifi_type -#define if_physical if_data.ifi_physical -#define if_addrlen if_data.ifi_addrlen -#define if_hdrlen if_data.ifi_hdrlen -#define if_metric if_data.ifi_metric -#define if_baudrate if_data.ifi_baudrate -#define if_hwassist if_data.ifi_hwassist -#define if_ipackets if_data.ifi_ipackets -#define if_ierrors if_data.ifi_ierrors -#define if_opackets if_data.ifi_opackets -#define if_oerrors if_data.ifi_oerrors -#define if_collisions if_data.ifi_collisions -#define if_ibytes if_data.ifi_ibytes -#define if_obytes if_data.ifi_obytes -#define if_imcasts if_data.ifi_imcasts -#define if_omcasts if_data.ifi_omcasts -#define if_iqdrops if_data.ifi_iqdrops -#define if_noproto if_data.ifi_noproto -#define if_lastchange if_data.ifi_lastchange -#define if_recvquota if_data.ifi_recvquota -#define if_xmitquota if_data.ifi_xmitquota -#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0) - -/* for compatibility with other BSDs */ -#define if_addrlist if_addrhead -#define if_list if_link - -/* - * Bit values in if_ipending - */ -#define IFI_RECV 1 /* I want to receive */ -#define IFI_XMIT 2 /* I want to transmit */ - -/* - * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) - * are queues of messages stored on ifqueue structures - * (defined above). Entries are added to and deleted from these structures - * by these macros, which should be called with ipl raised to splimp(). - */ -#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) -#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) -#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) -#define _IF_DROP(ifq) ((ifq)->ifq_drops++) -#define _IF_QLEN(ifq) ((ifq)->ifq_len) - -#define _IF_ENQUEUE(ifq, m) do { \ - (m)->m_nextpkt = NULL; \ - if ((ifq)->ifq_tail == NULL) \ - (ifq)->ifq_head = m; \ - else \ - (ifq)->ifq_tail->m_nextpkt = m; \ - (ifq)->ifq_tail = m; \ - (ifq)->ifq_len++; \ -} while (0) - -#define IF_ENQUEUE(ifq, m) do { \ - IF_LOCK(ifq); \ - _IF_ENQUEUE(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define _IF_PREPEND(ifq, m) do { \ - (m)->m_nextpkt = (ifq)->ifq_head; \ - if ((ifq)->ifq_tail == NULL) \ - (ifq)->ifq_tail = (m); \ - (ifq)->ifq_head = (m); \ - (ifq)->ifq_len++; \ -} while (0) - -#define IF_PREPEND(ifq, m) do { \ - IF_LOCK(ifq); \ - _IF_PREPEND(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define _IF_DEQUEUE(ifq, m) do { \ - (m) = (ifq)->ifq_head; \ - if (m) { \ - if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ - (ifq)->ifq_tail = NULL; \ - (m)->m_nextpkt = NULL; \ - (ifq)->ifq_len--; \ - } \ -} while (0) - -#define IF_DEQUEUE(ifq, m) do { \ - IF_LOCK(ifq); \ - _IF_DEQUEUE(ifq, m); \ - IF_UNLOCK(ifq); \ -} while (0) - -#define IF_DRAIN(ifq) do { \ - struct mbuf *m; \ - IF_LOCK(ifq); \ - for (;;) { \ - _IF_DEQUEUE(ifq, m); \ - if (m == NULL) \ - break; \ - m_freem(m); \ - } \ - IF_UNLOCK(ifq); \ -} while (0) - -#ifdef _KERNEL -#define IF_HANDOFF(ifq, m, ifp) if_handoff(ifq, m, ifp, 0) -#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) if_handoff(ifq, m, ifp, adj) - -static __inline int -if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, int adjust) -{ - int active = 0; - - IF_LOCK(ifq); - if (_IF_QFULL(ifq)) { - _IF_DROP(ifq); - IF_UNLOCK(ifq); - m_freem(m); - return (0); - } - if (ifp != NULL) { - ifp->if_obytes += m->m_pkthdr.len + adjust; - if (m->m_flags & M_MCAST) - ifp->if_omcasts++; - active = ifp->if_flags & IFF_OACTIVE; - } - _IF_ENQUEUE(ifq, m); - IF_UNLOCK(ifq); - if (ifp != NULL && !active) - (*ifp->if_start)(ifp); - return (1); -} - -/* - * 72 was chosen below because it is the size of a TCP/IP - * header (40) + the minimum mss (32). - */ -#define IF_MINMTU 72 -#define IF_MAXMTU 65535 - -#endif /* _KERNEL */ - -/* - * The ifaddr structure contains information about one address - * of an interface. They are maintained by the different address families, - * are allocated and attached when an address is set, and are linked - * together so all addresses for an interface can be located. - */ -struct ifaddr { - struct sockaddr *ifa_addr; /* address of interface */ - struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ -#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ - struct sockaddr *ifa_netmask; /* used to determine subnet */ - struct if_data if_data; /* not all members are meaningful */ - struct ifnet *ifa_ifp; /* back-pointer to interface */ - TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ - void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ - (int, struct rtentry *, struct rt_addrinfo *); - u_short ifa_flags; /* mostly rt_flags for cloning */ - u_int ifa_refcnt; /* references to this structure */ - int ifa_metric; /* cost of going out this interface */ -#ifdef notdef - struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ -#endif - int (*ifa_claim_addr) /* check if an addr goes to this if */ - (struct ifaddr *, struct sockaddr *); - -}; -#define IFA_ROUTE RTF_UP /* route installed */ - -/* for compatibility with other BSDs */ -#define ifa_list ifa_link - -/* - * The prefix structure contains information about one prefix - * of an interface. They are maintained by the different address families, - * are allocated and attached when an prefix or an address is set, - * and are linked together so all prefixes for an interface can be located. - */ -struct ifprefix { - struct sockaddr *ifpr_prefix; /* prefix of interface */ - struct ifnet *ifpr_ifp; /* back-pointer to interface */ - TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ - u_char ifpr_plen; /* prefix length in bits */ - u_char ifpr_type; /* protocol dependent prefix type */ -}; - -/* - * Multicast address structure. This is analogous to the ifaddr - * structure except that it keeps track of multicast addresses. - * Also, the reference count here is a count of requests for this - * address, not a count of pointers to this structure. - */ -struct ifmultiaddr { - TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ - struct sockaddr *ifma_addr; /* address this membership is for */ - struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ - struct ifnet *ifma_ifp; /* back-pointer to interface */ - u_int ifma_refcount; /* reference count */ - void *ifma_protospec; /* protocol-specific state, if any */ -}; - -#ifdef _KERNEL -#define IFAFREE(ifa) \ - do { \ - if ((ifa)->ifa_refcnt <= 0) \ - ifafree(ifa); \ - else \ - (ifa)->ifa_refcnt--; \ - } while (0) - -struct ifindex_entry { - struct ifnet *ife_ifnet; - struct ifaddr *ife_ifnet_addr; - dev_t ife_dev; -}; - -#define ifnet_byindex(idx) ifindex_table[(idx)].ife_ifnet -#define ifaddr_byindex(idx) ifindex_table[(idx)].ife_ifnet_addr -#define ifdev_byindex(idx) ifindex_table[(idx)].ife_dev - -extern struct ifnethead ifnet; -extern struct ifindex_entry *ifindex_table; -extern int ifqmaxlen; -extern struct ifnet *loif; /* first loopback interface */ -extern int if_index; - -void ether_ifattach(struct ifnet *, int); -void ether_ifdetach(struct ifnet *, int); -void ether_input(struct ifnet *, struct ether_header *, struct mbuf *); -void ether_demux(struct ifnet *, struct ether_header *, struct mbuf *); -int ether_output(struct ifnet *, - struct mbuf *, struct sockaddr *, struct rtentry *); -int ether_output_frame(struct ifnet *, struct mbuf *); -int ether_ioctl(struct ifnet *, int, caddr_t); - -int if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); -int if_allmulti(struct ifnet *, int); -void if_attach(struct ifnet *); -int if_delmulti(struct ifnet *, struct sockaddr *); -void if_detach(struct ifnet *); -void if_down(struct ifnet *); -void if_route(struct ifnet *, int flag, int fam); -int if_setlladdr(struct ifnet *, const u_char *, int); -void if_unroute(struct ifnet *, int flag, int fam); -void if_up(struct ifnet *); -/*void ifinit(void);*/ /* declared in systm.h for main() */ -int ifioctl(struct socket *, u_long, caddr_t, struct thread *); -int ifpromisc(struct ifnet *, int); -struct ifnet *ifunit(const char *); -struct ifnet *if_withname(struct sockaddr *); - -int if_poll_recv_slow(struct ifnet *ifp, int *quotap); -void if_poll_xmit_slow(struct ifnet *ifp, int *quotap); -void if_poll_throttle(void); -void if_poll_unthrottle(void *); -void if_poll_init(void); -void if_poll(void); - -struct ifaddr *ifa_ifwithaddr(struct sockaddr *); -struct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); -struct ifaddr *ifa_ifwithnet(struct sockaddr *); -struct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); -struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); -void ifafree(struct ifaddr *); - -struct ifmultiaddr *ifmaof_ifpforaddr(struct sockaddr *, struct ifnet *); -int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); - -void if_clone_attach(struct if_clone *); -void if_clone_detach(struct if_clone *); - -int if_clone_create(char *, int); -int if_clone_destroy(const char *); - -#define IF_LLADDR(ifp) \ - LLADDR((struct sockaddr_dl *) ifaddr_byindex((ifp)->if_index)->ifa_addr) - -#ifdef DEVICE_POLLING -enum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER }; - -typedef void poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count); -int ether_poll_register(poll_handler_t *h, struct ifnet *ifp); -int ether_poll_deregister(struct ifnet *ifp); -#endif /* DEVICE_POLLING */ - -#endif /* _KERNEL */ - -#endif /* !_NET_IF_VAR_H_ */ |