Donald Sharp [Wed, 23 Jan 2019 01:00:55 +0000 (20:00 -0500)]
topotests: Modify bgp convergence to be more than 120 seconds
Waiting 10 seconds for bgp convergence makes no sense, especially
if the test system is under load and a node is started up before
the node it is connecting to is up. We should wait for the full
default of 120 seconds, plus a little time to ensure nothing is
screwed up too much.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Renato Westphal [Tue, 22 Jan 2019 19:50:33 +0000 (17:50 -0200)]
ldpd: fix corner case in which we wouldn't respect the max pdu length
The calculation to know when an LDP PDU went past the maximum
negotiated PDU length was wrong because it wasn't taking the
"Version" and "PDU Length" fields into account (total of four
bytes). Fix this.
Mark Stapp [Tue, 23 Oct 2018 14:57:01 +0000 (10:57 -0400)]
zebra: infra for LSP updates using dplane
Adding infra to zebra dplane to support LSP updates. Add
kernel api for LSP updates that uses a dataplane context; add
stub apis for netlink, bsd, and 'null' kernel paths. Add
version of netlink mpls update code that takes a dplane
context struct instead of a zebra lsp struct.
Mark Stapp [Wed, 17 Oct 2018 19:54:53 +0000 (15:54 -0400)]
zebra: add apis to add and delete NHLFEs
Add public versions of zebra apis that add NHLFEs to an LSP,
and that free NHLFEs. The dataplane code needs to capture/copy
NHLFEs in order to do async LSP programming.
Rafael Zalamena [Thu, 17 Jan 2019 22:46:11 +0000 (20:46 -0200)]
zebra: fix routing socket AF_LINK handling on NETMASK
IPv6 netmasks use AF_LINK family type and puts the correct amount of
set bits in the data structure. If we only copy the SDL header we
won't get all IPv6 address length, we must copy the whole extension of
the `sockaddr_in6` struct (which is provided in `destlen` parameter).
Philippe Guibert [Mon, 21 Jan 2019 16:19:53 +0000 (17:19 +0100)]
bgpd: do not crash when removing ip vpn entries
when removing bgp instance, the parsing of rm->info contexts must be
protected. Also, the main level of hierarchy of rds must not be
allocated more than once.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Renato Westphal [Mon, 21 Jan 2019 14:30:36 +0000 (12:30 -0200)]
zebra: consolidate how we indentify address-families in the NHT code
Favor usage of the afi_t enumeration to identify address-families
over using the classic AF_INET[6] constants for that. The choice to
use either of the two seems to be mostly arbitrary throughout our
code base, which leads to confusion and bugs like the one fixed by
commit 6f95d11a1. To address this problem, favor usage of the afi_t
enumeration whenever possible, since 1) it's an enumeration (helps
the compilers to catch some bugs), 2) has a safi_t sibling and 3)
can be used to index static arrays. AF_INET[6] should then be used
only when interfacing with the kernel or external libraries like
libc. The family2afi() and afi2family() functions can be used to
convert between the two different representations back and forth.
Renato Westphal [Sat, 19 Jan 2019 19:24:09 +0000 (17:24 -0200)]
python: make DEFPY provide the text token of fixed parameters
In the CLI code, each cmd_token has both a "text" field, containing
the full token text (e.g. "unicast"), and an "arg" field,
containing the original text entered by the user (which might be
an abbreviation, like "uni" instead of "unicast").
To avoid the need to handle abbreviations, the recommended pattern
for DEFUN commands is to use the "text" value of fixed parameters
and the "arg" value of everything else.
Using DEFPY, however, the CLI parameters are automagically turned
into C variables which are initialized under the hood (so that
they're conveniently ready for use). The problem is that this
initialization was always using the "arg" value of the parameters,
which was leading to problems like these:
debian# show ipv6 route isi
Unknown route type
debian#
debian# conf t
debian(config)# router isis 1
debian(config-router)# redistribute ipv4 st level-1
% Configuration failed.
Invalid value "st" in "protocol" element.
YANG path: /frr-isisd:isis/instance[area-tag='1']/redistribute/ipv4[protocol='st']/protocol
To fix these problems (and probably others too), make DEFPY commands
auto-detect the type of the input parameters and use either the
"arg" or "text" value from the cmd_tokens accordingly.
Renato Westphal [Sat, 19 Jan 2019 19:19:13 +0000 (17:19 -0200)]
lib: remove the vrf_is_mapped_on_netns() function
Now that all daemons receive the VRF backend from zebra, we can get
rid of vrf_is_mapped_on_netns() in favor of using the more convenient
vrf_is_backend_netns() function, which doesn't require any argument.
This commit also fixes the following problem:
debian(config)# ip route 50.0.0.0/8 blackhole vrf FAKE table 2
% table param only available when running on netns-based vrfs
Even when zebra was started with the --vrfwnetns, the error
above would be displayed since the VRF FAKE didn't exist, which
would make vrf_is_mapped_on_netns() return 0 incorrectly. Using
vrf_is_backend_netns() this problem doesn't happen anymore.
Renato Westphal [Sat, 19 Jan 2019 19:19:13 +0000 (17:19 -0200)]
zebra, lib: send VRF backend to the client daemons
Add a new field in the ZEBRA_CAPABILITIES zapi message specifying
the VRF backend in use.
For simplicity, make the zclient code call vrf_configure_backend()
to apply the received value automatically instead of requiring
the daemons to do that themselves in their zebra_capabilities()
callbacks.
Additionally, call zebra_vrf_update_all() only after sending the
capabilities message to the client, so that it will know which VRF
backend is in use when processing the VRF messages.
This commit fixes a couple of bugs in the "interface" CLI command and
associated northbound callbacks, which behave differently depending
on the VRF backend in use. Before this commit, the vrf_backend
variable would always be set to VRF_BACKEND_NETNS in the client
daemons, even when zebra was started without the --vrfwnetns option.
This could lead to inconsistent behavior and subtle bugs under
specific circumstances.
Renato Westphal [Sat, 19 Jan 2019 01:23:45 +0000 (23:23 -0200)]
lib: simplify detection of when the user is leaving the CLI config mode
We can make use of the vty->config variable to know when the CLI
user is in the configuration mode or not. This is much simpler
than obtaining this information from the vty node, and also a more
robust solution (the three switch statements below, for example,
were out of sync).
Also, fix a bug where vty->config wasn't being unset in the
vty_config_exit() function (bug introduced by commit f344c66ea3).
Renato Westphal [Sat, 19 Jan 2019 00:58:58 +0000 (22:58 -0200)]
lib: reset the vty xpath index when entering the config mode
The CLI code uses the vty->xpath[] array and the vty->xpath_index
variables to keep track of where the user is in the configuration
hierarchy. As such, we were resetting vty->xpath_index to zero
whenever the user exited from the configuration mode in order to
keep the index valid. We weren't doing this in the vty_stop_input()
function however, which is called when the user types ^C in the
terminal. This was leading to bugs like this:
zebra> en
zebra# conf t
zebra(config)# interface eth0
zebra(config-if)# ^C
zebra# conf t
zebra(config)# interface eth0
% Configuration failed.
Schema node not found.
YANG path: /frr-interface:lib/interface[name='eth0'][vrf='default']/frr-interface:lib
To fix this, do something more clever: instead of resetting the
XPath index whenever the user exits from the configuration mode,
do that when the user enters in the configuration mode. This way
the XPath index needs to be reset in a single place only, not to
mention it's a more robust solution.
Renato Westphal [Fri, 18 Jan 2019 18:06:00 +0000 (16:06 -0200)]
zebra: send link parameters to zclients once they request interface info
We were sending ZEBRA_INTERFACE_LINK_PARAMS messages under the
following circumstances:
* New interface was created (via kernel or config);
* Interface went from down to up;
* Update in the link-params configuration.
Now also send ZEBRA_INTERFACE_LINK_PARAMS messages whenever a zclient
connects and sends a ZEBRA_INTERFACE_ADD request. Without this fix,
the client daemons don't receive interface link parameters if they
are configured in the zebra startup configuration.
Renato Westphal [Fri, 18 Jan 2019 18:06:00 +0000 (16:06 -0200)]
lib: fix checking of clients subscribed to receive default routes
In these two functions, we were using VRF_DEFAULT instead of the
VRF ID passed as a parameter when checking if the given client
subscribed to receive default routes or not. This prevented the
"default-originate" command from ospfd/isisd from working correctly
under specific circumstances.
Renato Westphal [Fri, 18 Jan 2019 18:06:00 +0000 (16:06 -0200)]
zebra: fix checking of clients subscribed to receive interface info
client->ifinfo is a VRF bitmap, hence we need to use
vrf_bitmap_check() to check if a client is subscribed to receive
interface information for a particular VRF. Just checking if
the client->ifinfo value is set will always succeed since it's
a pointer initialized by zserv_client_create(). With this fix,
we'll stop sending interface messages from all VRFs to all clients,
even those that didn't subscribe to it.
the command was not checking
correctly in all cases whether the virtual link existed. This caused
bugs in some corner cases, e.g. when two virtual links were created,
one of them was deleted, and the second one was reset with no
authentication - this would instead create a new virtual link with
the area in decimal format.
Signed-off-by: Emanuele Di Pascale <emanuele@voltanet.io>
Renato Westphal [Mon, 14 Jan 2019 18:29:18 +0000 (16:29 -0200)]
doc: update build instructions for freebsd on how to obtain libyang
Unfortunately the first version of the FreeBSD libyang port contained
a bug in which the libyang pkginfo file wasn't being installed
correctly in the system, and this prevented the FRR build system from
detecting the library. This bug was already fixed months ago but some
FreeBSD package repositories still have the old bugged version of the
port. This means we can't suggest people to install libyang using
"pkg install" since this causes problems for most people. In this
case, suggest FreeBSD users to build and install libyang manually
as we suggest for other BSD platforms.
This commit should be reverted once all FreeBSD package repositories
are updated with the new version of the libyang port.
Renato Westphal [Mon, 14 Jan 2019 18:29:18 +0000 (16:29 -0200)]
lib: update suggestions related to some northbound errors
Since commit 3a11599c, the FRR YANG modules are embedded inside the
binaries and no longer need to be loaded from the file system. This
way, it's impossible for the FRR binaries and YANG modules to be out
of sync anymore. As such, update the suggestions of the northbound
error codes.
Renato Westphal [Mon, 14 Jan 2019 18:29:18 +0000 (16:29 -0200)]
lib: don't abort when incomplete xpath is given by the user
Instead of aborting when an incomplete xpath is given to the
nb_oper_data_iterate() function, just return an error so that the
callers have a chance to treat this error. Aborting based on invalid
user input is never the right thing to do.
Renato Westphal [Mon, 14 Jan 2019 18:29:18 +0000 (16:29 -0200)]
lib: fix "use of uninitialised value" valgrind warning
When FRR is built without the --enable-config-rollbacks option,
the nb_db_transaction_save() function does nothing and the
"transaction_id" output parameter is left uninitialized. For
this reason, all northbound clients should initialize the
"transaction_id" argument before calling nb_candidate_commit() or
nb_candidate_commit_apply() (except when a NULL pointer is given,
which is the case of the confd and sysrepo plugins).
Renato Westphal [Mon, 14 Jan 2019 18:29:18 +0000 (16:29 -0200)]
lib: fix "may be used uninitialized" build warning
We are already handling all possible four cases from the "nb_event"
enumeration, so this problem can't happen in practice. Initialize the
"ref" variable to zero to silence the warning.
Renato Westphal [Fri, 11 Jan 2019 21:20:13 +0000 (19:20 -0200)]
lib, zebra: add AFI parameter to the ZEBRA_REDISTRIBUTE_DEFAULT_* messages
Some daemons like ospfd and isisd have the ability to advertise a
default route to their peers only if one exists in the RIB. This
is what the "default-information originate" commands do when used
without the "always" parameter.
For that to work, these daemons use the ZEBRA_REDISTRIBUTE_DEFAULT_ADD
message to request default route information to zebra. The problem
is that this message didn't have an AFI parameter, so a default route
from any address-family would satisfy the requests from both daemons
(e.g. ::/0 would trigger ospfd to advertise a default route to its
peers, and 0.0.0.0/0 would trigger isisd to advertise a default route
to its IPv6 peers).
Fix this by adding an AFI parameter to the
ZEBRA_REDISTRIBUTE_DEFAULT_{ADD,DELETE} messages and making the
corresponding code changes.
Donald Sharp [Thu, 3 Jan 2019 18:50:23 +0000 (13:50 -0500)]
zebra: Add a switch statement for rib_process_after
Future commits are going to introduce more rigor in
state setting in the case of received results from
the data plane. So let us move the DPLANE_OP_ROUTE_DELETE
state check to the same spot as the rest of the code that
is handling a particular operation.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Thu, 3 Jan 2019 16:56:35 +0000 (11:56 -0500)]
zebra: Limit meta_queue insertion to one time.
Modify the meta_queue insertion such that we only enqueue
the route_node into one meta_queue instead of several.
Suppose we have multiple route_entries associated with
a particular node from rip, bgp, staticd. If we receive a
route update from rip, we would enqueue the route_node into
the 1, 2, 3 meta-nodes. Which means that we would run
the entire process of figuring out a route 3 times, while
nothing would change the second two times.
Modify the code to choose the lowest meta-queue and
install it into that one for processing.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Wed, 9 Jan 2019 23:28:10 +0000 (18:28 -0500)]
lib: Add another 32 bit accessor to the prefix data structure
It would be nice to have the ability to access the prefix data structure
address as a block of 4 uint32_t's. This will allow me to easily/quickly
update the v6 address by 1. This will be used in subsuquent commits.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Mark Stapp [Fri, 21 Dec 2018 19:12:33 +0000 (14:12 -0500)]
zebra: pass lists of results from dataplane to zebra
Pass lists of results back to zebra from the dataplane subsystem
(and pthread). This helps reduce the lock/unlock cycles when
zebra is busy. Also remove a couple of typedefs that made their
way into the dataplane header file - those violate the FRR style
guidelines.
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