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cd46a114fc
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)
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/*
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* $FreeBSD$
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*/
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struct mbuf;
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struct sockaddr_at;
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#ifdef _NET_IF_ARP_H_
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extern timeout_t aarpprobe;
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extern int aarpresolve (struct ifnet *,
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struct mbuf *,
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struct sockaddr_at *,
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u_char *);
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extern int at_broadcast (struct sockaddr_at *);
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#endif
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#ifdef _NETATALK_AARP_H_
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extern void aarptfree (struct aarptab *);
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#endif
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struct ifnet;
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struct thread;
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struct socket;
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extern void aarpintr (struct mbuf *);
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extern void at1intr (struct mbuf *);
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extern void at2intr (struct mbuf *);
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extern void aarp_clean (void);
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extern int at_control (struct socket *so,
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u_long cmd,
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caddr_t data,
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struct ifnet *ifp,
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struct thread *td);
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extern u_short at_cksum (struct mbuf *m, int skip);
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extern void ddp_init (void);
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extern struct at_ifaddr *at_ifawithnet (struct sockaddr_at *);
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#ifdef _NETATALK_DDP_VAR_H_
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extern int ddp_output (struct mbuf *m, struct socket *so);
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#endif
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#if defined (_NETATALK_DDP_VAR_H_) && defined(_NETATALK_AT_VAR_H_)
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extern struct ddpcb *ddp_search(struct sockaddr_at *,
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struct sockaddr_at *,
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struct at_ifaddr *);
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#endif
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#ifdef _NET_ROUTE_H_
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int ddp_route(struct mbuf *m, struct route *ro);
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#endif
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