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The router-id table looks like is supposed to be sorted in current
quagga code, but the nodes are not added with the sorting
function.
The sorting function is host byte order dependent.
The values need to converted before comparison.
Fixing this causes Zebra to choose the largest IP address
as router-id, rather than the last address. This probably will
surprise some users. The other option would be to just remove the
comparison function and keep the existing LIFO behavior.
Lastly, simple subtraction works well for comparing.
* zebra/router-id.c
* router_id_add_address(): employ listnode_add_sort()
* router_id_cmp(): employ ntohl(), then compare integers
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* isisd/isis_pdu.c
* maskbit: this pre-initialized array is not modified
* lib/prefix.c
* maskbit: idem
* lib/command.c
* facility_map: idem
* itoa64: idem
* default_motd: make local var static
* facility_name(): update local var accordingly
* facility_match(): idem
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* bgpd/bgp_aspath.c
* ashash: only used in one file, make static
* aspath_count_numas(): dead code, sayonara
* bgpd/bgpd.c
* peer_nsf_stop(): only used in one file, make static
* bgpd/bgp_packet.h
* bgp_capability_receive(): add missing prototype for a
global function
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* ripd/rip_interface.c
* rip_request_neighbor(): comment out, unused
* rip_request_neighbor_all(): idem
* rip_interface_up(): Cast flags otherwise compiler complains
about %lld not matching uint64_t on 64 bit x86. Print in hex
since flags are bit field.
* rip_interface_add(): idem
* rip_interface_delete(): idem
* ripd/rip_zebra.c
* rip_redistribute_set(): comment out, unused
* ripd/ripd.h
* rip_redistribute_check(): move prototype here so compiler
can check function against prototype
* ripd/ripd.c
* rip_update_default_metric(): comment out, unused
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* ospf6d/ospf6_interface.c
* loopind(): sayonara
* ospf6d/ospf6_top.c
* ospf6_delete(): comment out, it might be useful if real shutdown is
added
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* lib/prefix.h
* prefix6_bit(): add IPv6 wrapper for prefix_bit()
* ospf6d/ospf6_lsdb.c
* ospf6_lsdb_type_router_head(): employ prefix6_bit()
* ospf6_lsdb_type_head(): idem
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* ripngd/ripng_interface.c
* ripng_check_max_mtu(): unused, sayonara
* ripng_interface_down(): cast flag arguments to logging function
* ripng_interface_add(): idem
* ripng_interface_delete(): idem
* ripngd/ripngd.c
* ripng_recv_packet(): avoid aliasing warning dereferencing pointer
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* zebra/irdp.h
* irdp_send_thread(): move prototype to common header file
* irdp_advert_off(): idem
* process_solicit(): idem
* irdp_read_raw(): idem
* send_packet(): idem
* zebra/irdp_interface.c
* inet_2a(): move function to where it is used
* in_cksum(): lib/checksum.h already provides prototype
* irdp_send_thread(): prototype moved away
* inet_2a(): idem
* irdp_advert_off(): idem
* b1, b2, b3, b4: get rid of global buffers for inet_2a()
* if_group(): add local buffer for inet_2a()
* if_add_group(): idem
* if_drop_group(): idem
* irdp_config_write(): idem
* Adv_new(): make static
* zebra/irdp_main.c
* irdp_read_raw(): prototype moved away
* send_packet(): idem
* in_cksum(): lib/checksum.h already provides prototype
* inet_2a(): function moved to irdp_interface.c
* zebra/irdp_packet.c
* b1, b2, b3, b4: get rid of global buffers for inet_2a()
* in_cksum(): lib/checksum.h already provides prototype
* process_solicit(): prototype moved away
* irdp_read_raw(): fix uninitialized variable
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* bgpd/bgp_fsm.c
* bgp_clearing_completed(): only used in one file, can be static
* bgpd/bgp_packet.c
* afi2str(): sayonara
* safi2str(): sayonara
* bgpd/bgp_route.c
* bgp_distance_reset(): sayonara
* bgpd/bgp_zebra.c
* bgp_ifindex_by_nexthop(): sayonara
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* zebra/zebra_rib.c
* rib_queue_add(): indent comments and simplify debug code
* rib_queue_init(): remove unneeded assert() calls and
extra return statements
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Make one version of check prefix bit, and put it inline
with proper prototype. This gets rid of some macro's and also some
assert() that can never happen on a non-broken compiler.
* bgpd/bgp_table.c
* CHECK_BIT(): sayonara
* check_bit(): sayonara
* SET_LINK(): sayonara
* set_link(): make use of prefix_bit() instead of check_bit()
* bgp_node_match(): idem
* bgp_node_lookup(): idem
* bgp_node_get(): idem
* lib/prefix.h
* prefix_bit(): new inline version of check_bit()
* lib/table.c
* CHECK_BIT(): sayonara
* check_bit(): sayonara
* SET_LINK(): sayonara
* set_link(): make use of prefix_bit() instead of check_bit()
* route_node_match(): idem
* route_node_lookup(): idem
* route_node_get(): idem
* ospf6d/ospf6_lsdb.c
* CHECK_BIT(): sayonara
* ospf6_lsdb_lookup_next(): make use of prefix_bit() instead of
CHECK_BIT()
* ospf6_lsdb_type_router_head(): idem
* ospf6_lsdb_type_head(): idem
* ospf6d/ospf6_route.c
* CHECK_BIT(): sayonara
* ospf6_route_match_head() make use of prefix_bit() instead of
* CHECK_BIT()
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* md5.c
* md5_calc(): If building on little endian then X
will be 'const uint32_t' which causes compiler
warning in code that never gets used. Just move
the endif to make sure code is not checked.
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* zebra/rtadv.c
* rtadv_free(): remove unused function
* rtadv_recv_packet(): break up cast/dereference to avoid
compiler type pun warning
* rtadv_read(): initialize ifindex, because compiler can't
figure out that it is okay
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* zebra/zebra_rib.c
* nexthop_active_update(): make local int vars unsigned
* nexthop_active_check(): return unsigned for consistency
* rib_dump(): cast time in printf format
* vrf_free(): remove unused function
* vrf_lookup_by_name(): idem
* rib_if_up(): idem
* rib_if_down(): idem
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* zebra/interface.c
* if_supported_family(): sayonara
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* table.c: general type safety and compiler help:
* maskbit[]: become const
* route_node_match(): take const args
* route_node_match_ipv4(): idem
* route_node_match_ipv6(): idem
* check_bit(): idem, plus adjust local vars typing
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heasley: I've used this for a while to track usage.
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It seems that there is a bug in ospf6d in ospf6_lsa_compare(): If LSA A
has sequence number smaller than 0x80000000 and LSA B has sequence
number larger than 0x80000000, ospf6_lsa_compare() returns that B is
more recent than A, although RFC says that sequence numbers should be
compared as signed numbers (0x8000001 smallest and 0x7FFFFFFF largest).
In ospfd, the function ospf_lsa_more_recent() has it right.
The problem appears when Quagga is used together with OSPFv3 in
development version of BIRD daemon ( http://bird.network.cz/ ),
which creates LSAs with maximum sequence number (0x7FFFFFFF)
as a part of flushing/premature aging LSA from OSPF area.
Because both daemons has different idea of which LSA instance
is more recent, it would lead to LSA storm.
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The RTF_CLONING flag has been removed in FreeBSD 8.0 with arp-v2 (see
http://svn.freebsd.org/viewvc/base/stable/8/UPDATING?view=markup),
since it no longer has any meaning. This patch checks if RTF_CLONING
exists before using it.
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Avoid a potential conflict with the C99 defines 'true' and 'false'
found in <stdbool.h> by choosing better variable names.
Also fix the calls to these ioctls, as described in <net/bpf.h>
in FreeBSD, NetBSD, and OpenBSD:
* BIOCGBLEN, BIOCIMMEDIATE, BIOCSSEESENT (the parameter should be
of type 'u_int')
* BIOCPROMISC (there should be no parameters)
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Several bits of text can be local or are unused.
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This code is only used one place and can be made local.
Gcc is smart enough to inline local functions if it wants to.
The function also has a big chunk of compatiablity code that
is no longer used; since quagga is now in a version control system
the source does not need to be used as a historical reference.
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Apply changes from commit f304cb48f0d7d0ff8f36e7aca8293141a9fa9e60
to rib_queue_add.
Also includes spelling fixes.
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* kernel_socket.c: (rtm_flag_dump) Use a const message pointer to be
in sync with commit ce0db9cb11c0bc2e7f89a7d042e50afa495556b4.
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* ospf6_lsdb.c: (ospf6_new_ls_id) Unlock the current LSA when breaking
out of the ospf6_lsdb_*_head() / ospf6_lsdb_*_next() loop early. No
explicit unlocking is needed when all LSAs are looped through
because ospf6_lsdb_*_next() manages everything in that case.
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The following syntax forms were not historically supported
by Quagga, although IOS accepted them w/o a problem:
no ip ospf cost <1-65535>
no ospf cost <1-65535>
no ip ospf cost <1-65535> A.B.C.D
no ospf cost <1-65535> A.B.C.D
From now on Quagga also supports these variants.
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* rtadv.c: round up when calculating the link-layer address option length;
add padding to the option if needed to end on an octet boundary
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* configure.ac: Bump to 0.99.15
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* ospf6_lsa.c: (ospf6_lsa_age_current) arithmetical compares make no sense
in non-host order..
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* bgp_network.c: (bgp_md5_set) Missing piece from earlier listener change
did not get ported from Vyatta code into upstream. The list
listener_sockets changed from (int *) to (struct bgp_listener *).
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* prefix.c: (str2prefix_ipv6) inet_pton succesful return is presumed to be
1, rather than the "not zero" the man page describes - seemed fragile.
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* testrib.conf: Example config file for testzebra
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* test_main.c: If required arguments are missing, say that.
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* if.c: (if_lookup_by_name) shouldn't crash just cause we got a NULL name
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* ospf_ism.c (ospf_dr_eligible_routers) should test for priority > 0 instead
of != 0 as ospf_nbr_new () initially sets prio to -1
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* ospf_zebra.c: (ospf_distribute_check_connected) check to make filter out
routes matching connected routes was matching against OSPF networks, which
can be far more general than the actual connected interfaces. Fix.
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* */*main.c: (main) Current versions of Gcc warn if the return value for
daemon() is not checked. So add a simple test and exit on failure.
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* bgp_network.c: (bgp_accept) The code in current git will crash as part of
the revised listener code is missing. The new listener thread code passes
a pointer to a bgp_listener structure, not the bgp pointer. The old code
always got a NULL for bgp pointer, so that is now hard coded.
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* bgp_filter.h: Gcc complains the function prototype is not correct because
the function argument is using old K&R style.
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Doing redistribute delete with full BGP table was taking
30 minutes, this drops it down to less than a second.
* ospf_lsa.c: (ospf_lsa_maxage) When flushing lots of entries the
performance is terrible because it looks up each LSA entry through
ospf_lsa_maxage_exist before deleting causing O(N^2) performance. Use a
new OSPF_LSA_MAXAGE flag instead of scan - and maintain it.
(ospf_lsa_maxage_exist) removed
(ospf_lsa_maxage_delete) maintain OSPF_LSA_MAXAGE flag
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In some cases ospfd does not recalc the route table. This
happens when ospfd receives an old LSA which will trigger
recalc but the this recalc will fail because all interfaces
isn't up yet. Next LSA that is originated matches the old one
so no recalc will be performed. This problem has been observed
when there are only 2 ppp I/Fs in an area, both go down at the
same time, then they come up again with a few seconds apart.
* ospf_lsa.c: (ospf_{router,network}_lsa_install) avoid a needless scheduling
of SPF.
(ospf_lsa_different) fix bug in LSA comparison that would lead to the
described failure to schedule SPF.
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* ospf_packet.c: make this message conditional on 'debug ospf event', as it
be easily triggered with, e.g., multiple subnets sharing same physical
network. E.g, see bug #532.
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