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author | Luigi Rizzo <luigi@FreeBSD.org> | 2004-04-25 09:24:52 +0000 |
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committer | Luigi Rizzo <luigi@FreeBSD.org> | 2004-04-25 09:24:52 +0000 |
commit | cd46a114fcb92154fdcee571daa45037a2aaf36f (patch) | |
tree | b64da6798f0d544a1f0a0369b5c8f192b6c31e34 /sys/net/if_iso88025subr.c | |
parent | 8cd65c072e75ffa813dd84cf610cc0b8d095e5d4 (diff) | |
download | src-cd46a114fcb92154fdcee571daa45037a2aaf36f.tar.gz src-cd46a114fcb92154fdcee571daa45037a2aaf36f.zip |
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)
Notes
Notes:
svn path=/head/; revision=128636
Diffstat (limited to 'sys/net/if_iso88025subr.c')
-rw-r--r-- | sys/net/if_iso88025subr.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/sys/net/if_iso88025subr.c b/sys/net/if_iso88025subr.c index 72b246f84f86..a34f92903af0 100644 --- a/sys/net/if_iso88025subr.c +++ b/sys/net/if_iso88025subr.c @@ -259,11 +259,12 @@ iso88025_output(ifp, m, dst, rt0) senderr(ENETDOWN); getmicrotime(&ifp->if_lastchange); + /* Calculate routing info length based on arp table entry */ + /* XXX any better way to do this ? */ error = rt_check(&rt, &rt0, dst); if (error) goto bad; - /* Calculate routing info length based on arp table entry */ if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway)) if (SDL_ISO88025(sdl)->trld_rcf != 0) rif_len = TR_RCF_RIFLEN(SDL_ISO88025(sdl)->trld_rcf); @@ -286,8 +287,9 @@ iso88025_output(ifp, m, dst, rt0) switch (dst->sa_family) { #ifdef INET case AF_INET: - if (!arpresolve(ifp, rt, m, dst, edst)) - return (0); /* if not yet resolved */ + error = arpresolve(ifp, rt0, m, dst, edst); + if (error) + return (error == EWOULDBLOCK ? 0 : error); snap_type = ETHERTYPE_IP; break; case AF_ARP: @@ -320,10 +322,9 @@ iso88025_output(ifp, m, dst, rt0) #endif /* INET */ #ifdef INET6 case AF_INET6: - if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)edst)) { - /* Something bad happened */ - return(0); - } + error = nd6_storelladdr(ifp, rt0, m, dst, (u_char *)edst); + if (error) + return (error); snap_type = ETHERTYPE_IPV6; break; #endif /* INET6 */ |