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BGP4-ANVL 20.1 ANVL tries to open BGP with version 5 and expects correct
notification in response. Quagga sends notification, but with incorrect
information in it.
The data needs to be a 2-byte value, and for now we respond with 0004 for any
peer version other than 4.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Commit 558d1fec11749d3257e improved bgp_attr_dup so it would be possible
for the caller to provide attr_extra, allowing to use the stack instead
of the heap for operations requiring only a short lived attr.
However, this commit introduced a bug where bgp_attr_dup wouldn't copy
attr_extra at all (but provide a reference to the original) if the
caller provided attr_extra.
Cc: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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zebra was not checking afi/safi values. This was leading to crashes where
these values were coming directly from some protocol's on-wire fields.
Safeguarding them in zebra is a good start.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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If a neighbor was in a peer group for any AFI/SAFI, bgpd would never write a
"no neighbor activate" line for IPv4 unicast, so a valid setup like following
could be configured, but not saved:
router bgp 64600
bgp router-id 198.51.100.1
network 198.51.100.0/24
neighbor peers peer-group
neighbor 2001:db8::2 remote-as 64601
no neighbor 2001:db8::2 activate
!
address-family ipv6
network 2001:db8:1::/48
neighbor peers activate
neighbor peers soft-reconfiguration inbound
neighbor 2001:db8::2 peer-group peers
exit-address-family
!
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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In bgp_clear_route_table, moved cleanup code before the allocation
of the work queue items. This returns the memory to the system
allocator before allocating new and might therefore help avoiding
heap fragmentation.
* bgp_route.c: (bgp_clear_route_table) moved code blocks.
Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Reviewed-by: Leonid Rosenboim <Leonid.Rosenboim@windriver.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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If a peer with soft-reconfiguration configured is cleared, the
function bgp_clear_route_table() doesn't free the bgp_adj_in and bgp_adj_out
structures of route nodes that for some reason, ej. denied by a filter,
don't have routes attached "rn->info == NULL".
Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Reviewed-by: Leonid Rosenboim <Leonid.Rosenboim@windriver.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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ALL_LIST_ELEMENTS is checking node == NULL twice, which is causing a
whole slew of false positives in Coverity. In this particular case,
addressing this in the code is reasonable; being a macro, this appears
all over the place without easy remedy.
Acked-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Change default value of variable NL_PKT_BUF_SIZE to 8192UL. Cf.
NLMSG_GOODSIZE definition of linux in include/linux/netlink.h for detail.
Previously, on platforms with a page size greater than 8192, if you had added
too many interfaces, zebra would not have enough buffer space to get the entire
interface list. This resulted in an incomplete interface list.
From: 高鹏 <gpstrive@gmail.com>
[updated to apply after FPM patches]
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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There are systems with no /bin/true - it might have different path
(/usr/bin/true) or even a shell builtin.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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LLVM clang does not support #pragma weak (bug 3679) on OS X. There are
other systems where the #pragma weak has varying syntax.
Added m4 file from the autoconf archives:
http://www.gnu.org/software/autoconf-archive/ax_sys_weak_alias.html
Fix up zebra/*_null.c files to use #pragma weak alias or stub functions
if not available. It's incomplete in that the different format #pragma
enable easier fixes on need.
Tested on 64bit OS X 10.7, FreeBSD 9.0 amd64 & i386 (32bit) using
gcc & clang. Tested on linux 64bit.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Stop additional, unnecessary flooding of MaxAge LSAs.
When a MaxAge LSA is installed, if the LSA is prematurely aged or the LSA is
not self-originated, the LSA is flushed. This results in a the LSA being
flooded a second time and in some cases flooded back to the receiver
(unless the receiver is also the advertising router). A MaxAge'd LSA has
already been flooded in ospf_flood() as part of the LSA receive processing
(ospf_ls_upd). A self-originated LSA will be flooded from the originate/refresh
routine. Thus, in the install routine, a MaxAge'd LSA only needs to be added
to the MaxAge LSA list.
Signed-off-by: Dinesh G Dutt <ddutt@cumulusnetworks.com>
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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This fix is for Type-4 LS updates handling at a ABR router where
ospf daemon is not distributing Type-4 LS updates with correct LS-Age
after learning about a ASBR router in a ospf network. Because of this
Type-5 LS updates are not learnt in ospf network.
Testing Scenario:
This can be re-produced by restarting the ospfd daemon on DUT
(mentioned in figure below)before the Hello time interval expires
for area 0.0.0.1.
____ _______ ____ _________
| | area: 0.0.0.1 | | area: 0.0.0.0 | | area: 0.0.0.2 | |
| R1 |---------------------|DUT/ABR|---------------------| R2 |------------------| R3/ASBR |
|____| x.x.x.0/24 |_______| y.y.y.0/64 |____| z.z.z.0/24 |_________|
In the above setup when ospfd is restarted (imp:before the Hello interval
at R1 expires) and DUT learns about ASBR router R3 (Type-4) in the
network from R2, but this ls-update is not propagates in area
0.0.0.1. So R1 never comes to know about the ASBR router in the
network, so all the type-5 LS updates coming from R3 are not learnt
by R1. Further if we again restart ospfd daemon it starts working fine.
With the fix given this issue can be resolved.
More Discussion on this is available at:
http://www.gossamer-threads.com/lists/quagga/dev/23892
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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A set of patches to clarify some comments as well as cleanup code that was
causing warnings. After these patches, the code can be compiled with
-Wall -Wsign-compare -Wpointer-arith -Wbad-function-cast -Wwrite-strings
-Wmissing-prototypes -Wmissing-declarations -Wchar-subscripts -Wcast-qual
-Wextra -Wno-unused-parameter -Wno-missing-field-initializers
(what is current in trunk plus -Wextra -Wno-unused-parameter
-Wno-missing-field-initializers).
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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elsewhere
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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Since LEGAL_TE_INSTANCE_RANGE() was being passed an unsigned int, a warning
was being thrown due to the compare against >= 0. Since this macro was used
only in one place, I removed the macro for an explict compare against a
constant for the MAX.
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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The VTY_GET_INTEGER_RANGE macro was being used also just to check the range
on a variable that wasn't used (for the "no" version of a VTY command), so I
split the macro into two. Also, since the variable is unsigned, if MIN is
zero, you get a warning about comparing an unsigned number against 0, giving
rise to slightly convoluted logic. Note that the previous two patches were
found by the -Wtype-limits and -Wunused-variables warnings. Without the
changes to these macros, these warnings are triggered erroneously, making it
harder to find the real problems.
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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In the original code, negative metrics would be converted successfully by
atoi() and then converted to an unsigned int that would always compare
successfully against >= 0, leaving a large positive metric in the route map.
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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Typo bug. ospf_nbr_nbma_poll_interval_set() was being sent priority instead
of interval.
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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Use the correct argument for the protocol lookup in
ospf distribute-list commands.
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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The ospf_apiserver_enable flag was being cleared _after_ the "-a"
command-line option set it to 1. Move up the initialisation, so
enabling the OSPF API is actually possible.
Reported-by: Rosario Mattera <rosmattera@gmail.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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The OSPF RFC (2328) states that the network mask field of a type 4
LSA "is not meaningful and must be zero". OSPFD has been setting
the mask as /32. This patch changes OSPFD to set the mask to 0 per
the RFC
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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Reduce the log level for the MaxAge LSA reception when such an LSA does
not exist in the database.
Signed-off-by: Ayan Banerjee <ayan@cumulusnetworks.com>
Reviewed-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Reviewed-by: Nolan Leake <nolan@cumulusnetworks.com>
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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Store the MaxAge LSA list in a tree instead of a linked list for efficient access.
Walking the list can be quite inefficient in some large systems and under certain tests.
ospfd maintains the list of LSA's that have been MaxAge'd out in a separate
linked list for removal by a remover/walker thread. When a new LSA is to be
installed, the old LSA is ejected and when it is ejected, the MaxAge LSA list
is traversed to ensure that the old LSA is also removed from this list if it
exists on this list.
When a large number (> 5K) MaxAge LSAs are bombarding the system, walking this
list takes a significant time causing timers to fire and actions to be taken
such as expiring neighbors due to expiry of DeadInterval (especially when timer
is really low, <= 12s), creating a spiral of instability.
By making this MaxAge LSA list be a tree, this problem is mitigated.
Signed-off-by: Dinesh Dutt <ddutt@cumulusnetworks.com>
Reviewed-by: Ayan Banerjee <ayan@cumulusnetworks.com>
Reviewed-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Reviewed-by: Shrijeet Mukherjee <shm@cumulusnetworks.com>
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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In the event areas are created at a later point of time with respect
to the playback of the "max-metric router-lsa administrative" command,
those areas do not get into indefinite max-metric mode. This patch is
inteneded to store the configuration and apply it to all future areas
that may be created.
In the process, some other bugs that were there with respect to restart
etc are fixed up.
Tested locally to see that the fix works across multiple
areas and across multiple restarts.
Signed-off-by: Ayan Banerjee <ayan@cumulusnetworks.com>
Reviewed-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Reviewed-by: JR Rivers <jrrivers@cumulusnetworks.com>
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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After a SPF run, OSPF deletes routes that have changed in terms of any
metric, type, and/or next-hops and re-adds them. Given that the Zebra-RIB
already support replacement semantics, we suppress deletes for routes
that will be added back again.
This has the following advantages. It reduces the number of IPC messages
between OSPF/Zebra. Also, in the current flow, a batch of route deletes
were followed by a batch of adds even for say a metric change.
With the change, routes are sent as "add" when they are modified. Zebra
already implicitly deletes older routes.
Signed-off-by: Ayan Banerjee <ayan@cumulusnetworks.com>
Reviewed-by: Scott Feldman <sfeldma@cumulusnetworks.com>
Reviewed-by: Dinesh Dutt <ddutt@cumulusnetworks.com>
Signed-off-by: Scott Feldman <sfeldma@cumulusnetworks.com>
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Don't error out when someone tries using --with-pkg-git-version on
something that isn't actually a git checkout (like a dist tarball).
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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automake file lists haven't quite kept up with recent changes, time to
fix them up so the dist tarball actually works...
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Intel's icc doesn't accept "-wd <number>" anymore, it's "-wd<number>"
these days. But, anyhow, the warnings disabled in Quagga's configure.ac
don't seem to appear anywhere at all, so let's just remove the option
completely.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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the isis ipv6 reachability metric is transmitted in big endian / network
format, but isis_spf_process_lsp() does not convert this into host endian
format when mucking around with local cost + received metric. This patch
fixes this problem and makes received ipv6 metrics work properly on
little-endian machines.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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When switching to metric-style transition, circuit metrics should also be
verified to be in the narrow range 0..63.
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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When switching to narrow metric style, all configured circuits are
verified to have a valid narrow style metric. Check te_metric instead
of metric_default as the latter is only 8bit wide and may overflow for
wide style metrics.
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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this fixes a bunch of issues found by Coverity SCAN and flagged as
"high" impact -- although, they're all rather minute issues.
* isisd/isis_adjacency.c: one superfluous check, one possible NULL deref
* isisd/isis_circuit.c: two prefix memory leaks
* isisd/isis_csm.c: one missing break
* isisd/isis_lsp.c: one possible NULL deref
* isisd/isis_pfpacket.c: one error-case fd leak
* isisd/isis_route.c: one isis_route_info memory leak
* isisd/isis_routemap.c: one... fnord
* isisd/isis_tlv.c: one infinite loop
Reported-by: Coverity SCAN
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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The socket is only created once when an interface is brought up, and the
multicast groups were joined according to configuration at that point.
This breaks when later switching an interface to another IS-IS level.
Since, for a separate conformance issue (ANVL ISIS-6.4), we should be
inspecting the destination address anyway, the simplest fix here is to
just join all groups unconditionally. There shouldn't be much traffic
on these anyway, worst case we might be picking up some unrelated
multicast groups due to NIC filter aliasing though...
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Tested-by: Martin Winter <mwinter@opensourcerouting.org>
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isisd defaults to wide metric style. So if narrow metric style is
configured, a matching setting should be written to the configuration,
allowing a narrow metric-style setting to be saved.
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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spftree_area_del didn't clear the IPv6 L2 spftree due to a simple typo,
leading to a SEGV on shutdown when the still-armed timer would try to
run an IPv6 L2 SPF calculation with its data free'd already.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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isisd should not form adjacencies on receiving an IS-IS Hello without a
list of supported protocols (cf. RFC 1195 s4.4 p32 "Maintaining Router
Adjacencies") Also fixes memleaks in these error cases.
* isisd/isis_pdu.c: improve TLVFLAG_NLPID handling
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Tested-by: Martin Winter <mwinter@opensourcerouting.org>
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isisd would form an adjacency with another router despite the system IDs
being identical. This would later cause an assertion failure like this:
assertion=0x555555596db8 "isis_find_vertex (spftree->paths, id, vtype) == ((void *)0)",
file=0x555555596c60 "isis_spf.c", line=515, function=0x555555597900 "isis_spf_add2tent") at log.c:619
which is caused by trying to add a path expected to not exist, but
suddenly colliding due to the duplicate system ID.
* isis_pdu.c: check for system ID collision on receiving Hello
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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RFC1195 s4.2 "Multiple IP Addresses per Interface" explicitly forbids us
from adding multiple tuples of IP addresses, putting a hard cutoff at 63
IP addresses.
* isisd/isis_tlv.c: cut off (and return success) at 63 addrs.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Tested-by: Martin Winter <mwinter@opensourcerouting.org>
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If enabled with --with-pkg-gitversion on ./configure, this will append
git version strings and branch information at the following places:
- overall version number: 0.99.21-g0123456
- login motd and show version: tag information + git id + branches
Sample output:
Hello, this is Quagga (version 0.99.21-g14b49ad-dirty).
Copyright 1996-2005 Kunihiro Ishiguro, et al.
This is a git build of quagga_0_99_21_release-106-g14b49ad-dirty
Associated branch(es):
local:master
[v2]: fix build without gitinfo (add "else" branch)
[v2]: fix for repos without any tags (different git describe output)
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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* zebra/zebra_fpm_netlink.c
Change the zebra FPM code to include an interface index when
encoding a nexthop even if the protocol only provided a gateway
address (e.g, NEXTHOP_TYPE_IPV4).
Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Update documentation with some text on the zebra interface to the
optional Forwarding Path Manager component, and the related cli
commands.
Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Enhance zebra to send routes to the (optional) Forwarding Path Manager
component using the interface defined by fpm/fpm.h.
* configure.ac
- Add --enable-fpm flag.
The FPM-related code in zebra is activated only if the build is
configured with '--enable-fpm'.
- Add HAVE_NETLINK automake conditional.
This allows us to conditionally build netlink-dependent C code.
* zebra/{rib.h,zebra_rib.c}
- Add the 'fpm_q_entries' field to the rib_dest_t structure. This
allows dests to be placed on the fpm queue.
- Define a couple new rib_dest_t flags that hold FPM-related
state.
- Invoke the zfpm_trigger_update() function for a route_node
whenever the information to be sent to the FPM changes.
- rib_can_delete_dest(): Return FALSE if we have to update the FPM
about the given dest. This ensures that the dest is not deleted
even if there are no ribs hanging off of it.
* zebra/zebra_fpm.c
This file holds most of the code for interacting with the FPM.
- If quagga was configured with '--enable-fpm', periodically try
to connect to the FPM.
- When the connection comes up, enqueue all relevent dests to the
FPM queue.
- When the FPM socket is readable, dequeue the next rib_dest_t
from the FPM queue, encode it in to a message and send the
message to the FPM.
- When the connection to the FPM goes down, remove all dests from
the FPM queue, and then start trying to connect to the FPM
again.
- Expose the following new operational commands:
show zebra fpm stats
clear zebra fpm stats
* zebra/zebra_fpm_netlink.c
- zfpm_netlink_encode_route(): Function to encode information
about a rib_dest_t in netlink format.
* zebra/zebra_fpm_private.h
Private header file for the zebra FPM module.
* zebra/zebra_fpm.h
Header file exported by zebra FPM module to the rest of zebra.
* zebra/debug.c
Add the 'debug zebra fpm' command.
* zebra/main.c
Initialize the zebra-FPM code on startup.
* zebra/misc_null.c
Add stub for zfpm_trigger_update().
* zebra/Makefile.am
- Include new file zebra_fpm.c in build.
- Include zebra_fpm_netlink.c in build if HAVE_NETLINK is defined.
* vtysh/Makefile.am
Include zebra_fpm.c in list of files that define cli commands.
Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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The Forwarding Plane Manager (FPM) is an optional component that may
be used in scenarios where the router has a forwarding path that is
distinct from the kernel, commonly a hardware-based fast path. It is
responsible for programming forwarding information (such as routes and
nexthops) in the fast path.
In Quagga, the Routing Information Base is maintained in the 'zebra'
infrastructure daemon. Routing protocols communicate their best routes
to zebra, and zebra computes the best route across protocols for each
prefix. This latter information comprises the bulk of the Forwarding
Information Base.
The new header file added by this patch, 'fpm/fpm.h', defines a
point-to-point interface using which zebra can update the FPM about
changes in routes. The communication takes place over a stream
socket. The FPM listens on a well-known TCP port, and zebra initiates
the connection.
All messages sent over the connection start with a short 'FPM header'.
In the case of route add/delete messages, the header is followed by a
netlink message. Zebra should send a complete copy of the forwarding
table(s) to the FPM, including routes that it may have picked up from
the kernel.
The FPM interface uses replace semantics. That is, if a 'route add'
message for a prefix is followed by another 'route add' message, the
information in the second message is complete by itself, and replaces
the information sent in the first message.
If the connection to the FPM goes down for some reason, the client
(zebra) should send the FPM a complete copy of the forwarding table(s)
when it reconnects.
Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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Bring in sys/queue.h from the FreeBSD tree as lib/queue.h.
This header implements lists of various flavors using inline
linkages. The imported file corresponds to SVN revision 221843 (url
below) and is available under the terms of the New BSD license
(3-clause).
http://svnweb.freebsd.org/base/head/sys/sys/queue.h?revision=221843
Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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* zebra/{rib.h,zebra_rib.c}
Add nexthop_type_to_str(), which returns a human-readable string
corresponding to a nexthop type.
* zebra/rt_netlink.[hc]
- Add new header file that exposes some existing and new
netlink-related functions from rt_netlink.c to the rest of
zebra.
addattr32
addattr_l
rta_addattr_l
nl_msg_type_to_str (new)
nl_rtproto_to_str (new)
- Use nexthop_type_to_str() instead of the static array
'nexthop_types_desc'.
Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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* lib/zebra.h
Add macro ZEBRA_NUM_OF, which returns the number of elements in a
static array.
* zebra/rib.h
Add the rib_tables_iter_t structure and associated functions,
which allow one to walk all tables in the rib.
* zebra/zebra_rib.c
- Add vrf_id_get_next() to retrieve the first VRF id (if any) that
is greater than a given VRF id.
- Add rib_tables_iter_next().
Signed-off-by: Avneesh Sachdev <avneesh@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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