freebsd-dev/sys/netatalk/at_extern.h

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/*-
* Copyright (c) 1990,1994 Regents of The University of Michigan.
* All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation, and that the name of The University
* of Michigan not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. This software is supplied as is without expressed or
* implied warranties of any kind.
*
* This product includes software developed by the University of
* California, Berkeley and its contributors.
*
* Research Systems Unix Group
* The University of Michigan
* c/o Wesley Craig
* 535 W. William Street
* Ann Arbor, Michigan
* +1-313-764-2278
* netatalk@umich.edu
*
* $FreeBSD$
*/
struct mbuf;
struct sockaddr_at;
#ifdef _NET_IF_ARP_H_
extern timeout_t aarpprobe;
This commit does two things: 1. rt_check() cleanup: rt_check() is only necessary for some address families to gain access to the corresponding arp entry, so call it only in/near the *resolve() routines where it is actually used -- at the moment this is arpresolve(), nd6_storelladdr() (the call is embedded here), and atmresolve() (the call is just before atmresolve to reduce the number of changes). This change will make it a lot easier to decouple the arp table from the routing table. There is an extra call to rt_check() in if_iso88025subr.c to determine the routing info length. I have left it alone for the time being. The interface of arpresolve() and nd6_storelladdr() now changes slightly: + the 'rtentry' parameter (really a hint from the upper level layer) is now passed unchanged from *_output(), so it becomes the route to the final destination and not to the gateway. + the routines will return 0 if resolution is possible, non-zero otherwise. + arpresolve() returns EWOULDBLOCK in case the mbuf is being held waiting for an arp reply -- in this case the error code is masked in the caller so the upper layer protocol will not see a failure. 2. arpcom untangling Where possible, use 'struct ifnet' instead of 'struct arpcom' variables, and use the IFP2AC macro to access arpcom fields. This mostly affects the netatalk code. === Detailed changes: === net/if_arcsubr.c rt_check() cleanup, remove a useless variable net/if_atmsubr.c rt_check() cleanup net/if_ethersubr.c rt_check() cleanup, arpcom untangling net/if_fddisubr.c rt_check() cleanup, arpcom untangling net/if_iso88025subr.c rt_check() cleanup netatalk/aarp.c arpcom untangling, remove a block of duplicated code netatalk/at_extern.h arpcom untangling netinet/if_ether.c rt_check() cleanup (change arpresolve) netinet6/nd6.c rt_check() cleanup (change nd6_storelladdr)
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extern int aarpresolve (struct ifnet *,
struct mbuf *,
struct sockaddr_at *,
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u_char *);
extern int at_broadcast (struct sockaddr_at *);
extern struct mtx aarptab_mtx;
#define AARPTAB_LOCK() mtx_lock(&aarptab_mtx)
#define AARPTAB_UNLOCK() mtx_unlock(&aarptab_mtx)
#define AARPTAB_LOCK_ASSERT() mtx_assert(&aarptab_mtx, MA_OWNED)
#define AARPTAB_UNLOCK_ASSERT() mtx_assert(&aarptab_mtx, MA_NOTOWNED)
#endif
#ifdef _NETATALK_AARP_H_
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extern void aarptfree (struct aarptab *);
#endif
struct ifnet;
struct thread;
struct socket;
extern void aarpintr (struct mbuf *);
extern void at1intr (struct mbuf *);
extern void at2intr (struct mbuf *);
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extern void aarp_clean (void);
extern int at_control (struct socket *so,
u_long cmd,
caddr_t data,
struct ifnet *ifp,
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struct thread *td);
extern u_short at_cksum (struct mbuf *m, int skip);
extern void ddp_init (void);
extern struct at_ifaddr *at_ifawithnet (struct sockaddr_at *);
#ifdef _NETATALK_DDP_VAR_H_
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extern int ddp_output (struct mbuf *m, struct socket *so);
#endif
#if defined (_NETATALK_DDP_VAR_H_) && defined(_NETATALK_AT_VAR_H_)
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extern struct ddpcb *ddp_search(struct sockaddr_at *,
struct sockaddr_at *,
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struct at_ifaddr *);
#endif
#ifdef _NET_ROUTE_H_
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int ddp_route(struct mbuf *m, struct route *ro);
#endif