Donald Sharp [Thu, 13 Jun 2019 02:27:29 +0000 (22:27 -0400)]
lib: Add check for non-preexisting thread
When adding a read/write poll event and we are using a developmental
build add a bit of code to ensure that we do not already have an read
or write event scheduled.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Thu, 13 Jun 2019 01:13:18 +0000 (21:13 -0400)]
lib: Prevent infinite loop in fd handling
If we have a case where have created a fd for i/o and we have
removed the handling thread but still have the fd in the poll
data structure, there existed a case where we would get
the handle this fd return from poll but we would immediately
do nothing with it because we didn't have a thread to hand
the event to.
This leads to an infinite loop. Prevent the infinite loop
from happening and log the problem.
We still need to find the cause of this happening. But
let's prevent the system from melting down in the mean time.
Fixes: #2796 Signed-off-by: David Lamparter <equinox@diac24.net> Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
David Lamparter [Wed, 12 Jun 2019 15:11:21 +0000 (17:11 +0200)]
lib: use snprintfrr() in "hidden" printfs
We need to be calling snprintfrr() instead of snprintf() in places that
wrap snprintf in some user-exposed way; otherwise the extensions won't
be available for those functions.
Signed-off-by: David Lamparter <equinox@diac24.net>
David Lamparter [Tue, 4 Jun 2019 18:27:05 +0000 (20:27 +0200)]
lib/clippy: assert() for non-optional args
This is mostly to help static analysis; since we know from the command
string which args are optional and which aren't, we can add assert()
statements on them.
Fixes: #3270 Signed-off-by: David Lamparter <equinox@diac24.net>
David Lamparter [Tue, 4 Jun 2019 15:07:57 +0000 (17:07 +0200)]
lib/clippy: error out on unsupported bits
clippy can't process #ifdef or similar bits inside of an argument list
(e.g. within the braces of a DEFUN or DEFPY statement.) Improve error
reporting to catch these cases instead of generating broken C code.
Fixes: #3840 Signed-off-by: David Lamparter <equinox@diac24.net>
David Lamparter [Tue, 4 Jun 2019 14:20:20 +0000 (16:20 +0200)]
build: improve env var handling for cross build
We can use `$ac_precious_vars` to get at autoconf's conception of which
environment variables are relevant. This makes "HOST_..." setup more
consistent for cross-compilation setups.
Fixes: #4006 Signed-off-by: David Lamparter <equinox@diac24.net>
Renato Westphal [Mon, 27 May 2019 22:48:13 +0000 (19:48 -0300)]
lib: fix outdated candidate configuration issue
Even when using the classic CLI mode (i.e. when --tcli is not
used), the northbound code still uses vty->candidate_config
to perform configuration changes. From the perspective of the
user, the running configuration is being edited directly, but
under the hood the northbound layer does a full configuration
transaction for each command. When the running configuration is
edited by a northbound client other than the CLI (e.g. kernel,
gRPC), vty->candidate_config might become outdated, and this can
lead to lots of weird problems. To fix this, always regenerate
vty->candidate_config before each configuration command when
using the classic CLI mode. When using the transactional CLI,
the user needs to update the candidate manually using the "update"
command, otherwise the "commit" command will fail with this error:
"% Candidate configuration needs to be updated before commit".
Fixes some problems reported by Don after moving an interface from
one VRF to another one while zebra is running.
Reported-by: Don Slice <dslice@cumulusnetworks.com> Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
Soman K S [Tue, 11 Jun 2019 13:20:09 +0000 (06:20 -0700)]
bgpd: Process core when bgp instance is deleted
* When the bgp is being deleted and routes are in clear workqueue
and new aggregate address being allocated
* Added flag BGP_FLAG_DELETE_IN_PROGRESS in bgp structure to
bgp instance is being deleted
* When adding aggregate route check this flag and peer_self is valid
Stephen Worley [Mon, 10 Jun 2019 04:39:40 +0000 (00:39 -0400)]
zebra,pbrd: Update pbrd to handle NHT properly
Update pbrd to properly handle nexthop tracking.
When we get a notification that a change happened on a nexthop,
re-install it if its still valid.
Before, we were running over all routes and re-queueing them if they
were PBR routes. This commit removes that and puts all the processing
in PBR instead.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Stephen Worley [Mon, 10 Jun 2019 04:36:59 +0000 (00:36 -0400)]
pbrd: Set next/prev to NULL on cached nexthops
When we copy a new nexthop to cache and track, set its
next and prev pointers to NULL. We don't want those since
this is to be treated as a single nexthop.Other nexthops that
aren't in a group could hash to this nexthop so it doesn't
make sense to keep those pointers in the cache.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
David Lamparter [Sun, 9 Jun 2019 23:35:04 +0000 (01:35 +0200)]
tools: retain sanity when reloading under systemd
Without this, we end up restarting watchfrr with the systemd watchdog
non-functional & tripped a bit later. Also, if watchfrr is in the
"control" cgroup, systemd 232 will kill it. (241 apparently doesn't.
Can't find anything about this in systemd's ChangeLog though.)
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Don Slice [Mon, 10 Jun 2019 12:48:36 +0000 (05:48 -0700)]
bgpd: add l2vpn evpn to afi safi parse utility
Problem reported with "clear bgp l2vpn evpn * soft" clearing the
wrong afi/safi (cleared ipv6 unicast instead). Determined that
the calling function used the argv_find_and_parse_afi/safi routines
to determine the correct afi/safi to pass on. Since l2vpn/evpn were
missing from the lookup, the command defaulted to ipv6 unicast. This
fix just adds that afi/safi to the lookup routine.
Ticket: CM-25167 Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
Donald Sharp [Thu, 6 Jun 2019 20:23:09 +0000 (16:23 -0400)]
pimd: Allow zlookup socket to drain
When pim is started and has nothing to talk to zebra about
over the zlookup socket and interface events are happening
then the zlookup socket is not being drained.
This eventually leads to a situation where the kernel send buffer
fills up and zebra is unable to write anything down the pipe.
At this time the zapi starts buffering data in `struct buffer`
which of course slowly fills up as pim has nothing to do.
As a bit of a hack allow the zlookup socket to wake up 1 time
a minute and ask for information about the default route
and do nothing with it. This will cause the socket buffers
to be drained and the system will be happy.
Long term we need to get rid of this synchronous/asynchronous
duality that pim has. This is on the radar but is not something
that could be fixed in an afternoon or a week of effort in my
opinion. Given time constraints right now. Let's put this
in place and then once we get pim completely async then
we can just remove the zlookup( I hope ) code.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Mark Stapp [Thu, 6 Jun 2019 15:49:15 +0000 (11:49 -0400)]
tests: Add ip6_route_zebra lib function
Add a common function to retrieve and canonicalize
'show ipv6 route' output for use in topotests. Use that in
the test_ospf6_topo1 test; update the corresponding 'expected'
results files to match the lib function.
Replace some 'print' with 'logger' statements in that test also.
Donald Sharp [Wed, 5 Jun 2019 01:38:11 +0000 (21:38 -0400)]
bfdd: Modify bfdd to quietly accept access-lists
The `access-list ...` command was causing bfdd to return
'unknown commands'. Make bfdd at least cognizant of
access-lists enough to not create strange error messages
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Thu, 30 May 2019 23:55:26 +0000 (19:55 -0400)]
*: Convert over to all -N namespace to change DAEMON_VTY_DIR
When the user specifies -N namespace allow it to influence the
frr_vtydir(DAEMON_VTY_DIR) to have namespace in it's path
like so: $frrstate_dir/<namespace>
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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