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Fix bug 544: isisd produces an unexpected routing table for wide-metric.
* isis_spf.c: Accept VTYPE_PSEUDO_TE_IS and VTYPE_NONPSEUDO_TE_IS
vertex types for SPF calculation
* isis_pdu.c: Change order of TLVs to match Cisco to make bitwise
comparison easier for Wireshark
* isis_tlv.c: EXTREME_TLV_DEBUG for TLV debugging instead of
EXTREME_DEBUG
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The forwarding table was filled with wrong next-hops, and which is even
worse, it was done in a totally non-deterministic way.
The next-hop set for an IP prefix by isisd was the neighbor IS from
which the flooded LSP about the IP prefix was arrived. So, if an IS
received all the LSPs through its, say, eth0 interface, all entries
in the forwarding table contained the next IS reachable via eth0 as
the next-hop.
The solution is to propagate the correct next-hop further from node to
node as the SPF algorithm traverses the graph and selects the next
node to be added to the set of already covered nodes.
Also, the construction of the tentative node list (the nodes where the
shortest path is not known yet) was buggy: if a node was already a
member of this list with a certain path cost, and an alternative path
was found to it with a lower cost while processing a pseudo-node LSP,
it was not added to the list. This way, the path selected by isisd for
a certain prefix was the first one it encountered during the LSDB
processing.
Signed-off-by: Fritz Reichmann <fritz@reichmann.nl>
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2006-12-08 Hannes Gredler <hannes@gredler.at>
* isis_adjacency.c: (isis_new_adj) Allow NULL snpa argument.
* isis_pdu.c: (various) Update calls to isis_new_adj() to pass
NULL and use default.
* (general) Add forward declarations where required.
Fix up const char *'s.
Allow V4-only compilation.
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2005-11-20 Paul Jakma <paul.jakma@sun.com>
* (general) remove includes of very common system headers,
these are already picked up by zebra.h. Further, including
them before zebra.h messes up all our lovely (sarcasm)
autoconf'd detecting of platform specific things. Recent
addition of stdint.h to configure.ac and zebra.h appears
particularly to throw up this problem.
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* isis_events.c: Stop pseudo LSP thread while resigning circuit from
level.
* isis_route.c: Fix compiling with EXTREME_DEBUG. Mark route as not
in sync with zebra if it's changed.
* isis_spf.c: Schedule route validating etc even if tent was empty.
It's probably because we just don't have any adjacencies.
* isisd.c: Write minimum spf interval into configuration.
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Replace XMALLOC + memset with XCALLOC. Fix some indentation issues.
The only really significant change is simplified isis_delete_adj
function in isis_adjacency.c.
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ISIS_ROUTE_FLAG_ACTIVE flag before running SPF.
* isisd.[ch]: Separate route tables for different levels. SPF is done
separately, but in case of L1L2 area they have to be merged.
* isis_zebra.c: Set/unset ISIS_ROUTE_FLAG_ZEBRA_SYNC flag correctly in
case of adding/removing IPv4 routes.
* zebra_route.c: Rework route validating process. Merging L1 and L2
tables in case of L1L2 area.
In short - many changes to make SPF work more correctly, add/remove
to/from RIB also works now. It's still very far from perfect though.
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mostly, but needs certainly much more testing, especially transition
situation.
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on).
* isis_lsp.c (lsp_build_nonpseudo): Use stream_reset() instead of
touching endp directly.
* isis_lsp.c (lsp_build_pseudo): Ditto.
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* (global): Fix up list loops to match changes in lib/linklist,
and some basic auditing of usage.
* configure.ac: define QUAGGA_NO_DEPRECATED_INTERFACES
* HACKING: Add notes about deprecating interfaces and commands.
* lib/linklist.h: Add usage comments.
Rename getdata macro to listgetdata.
Rename nextnode to listnextnode and fix its odd behaviour to be
less dangerous.
Make listgetdata macro assert node is not null, NULL list entries
should be bug condition.
ALL_LIST_ELEMENTS, new macro, forward-referencing macro for use
with for loop, Suggested by Jim Carlson of Sun.
Add ALL_LIST_ELEMENTS_RO for cases which obviously do not need the
"safety" of previous macro.
LISTNODE_ADD and DELETE macros renamed to ATTACH, DETACH, to
distinguish from the similarly named functions, and reflect their
effect better.
Add a QUAGGA_NO_DEPRECATED_INTERFACES define guarded section
with the old defines which were modified above,
for backwards compatibility - guarded to prevent Quagga using it..
* lib/linklist.c: fix up for linklist.h changes.
* ospf6d/ospf6_abr.c: (ospf6_abr_examin_brouter) change to a single
scan of the area list, rather than scanning all areas first for
INTER_ROUTER and then again for INTER_NETWORK. According to
16.2, the scan should be area specific anyway, and further
ospf6d does not seem to implement 16.3 anyway.
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[backport candidate]
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functions and some tiny related fixes. No functional changes.
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thing to do to have completely separate threads for IPv4 and IPv6 SPF
though. But it works and it's now possible to have both IPv4 and IPv6
enabled in interface. One bug fixed in LSP regeneration scheduling as well.
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least periodic spf works again.
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Also tiny temporary fix from me to spf thread crash. Will look at it later.
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changelog for details.
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