Add a simple validation function for zapi_labels messages; it
checks for and validates backup nexthop indexes currently.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
In networking restart event, l3vni (vxlan) interface followed by
associated vrf interfaces go down/deleted.
L3vni (oper) down event (from zebra to bgp) triggers to
clean up/un-import evpn routes (one-by-one) from the vrf table,
zebra internally removes the route entry from nexthop and RMAC hash.
When all the routes references in nexthop and RMAC db removed,
both (nexthop/rmac) are suppose to be uninstalled from the
bridge fdb and neigh table.
While evpn routes removal in progress, a vrf disable event removes
l3vni to its vrf association.
Subsequent bgp to evpn routes removal does not clean up thus evpn routes
reference to nexthop and RMAC remains in zebra hash.
bridge fdb and neigh tables are flushed out since networking restart brings down
all interfaces which results in flush of fdb and neigh tables.
By product is the zebra does not install nexthop and rmac when routes are re-imported
into vrf in VNI/VRF up event.
The fix is in vrf disable event to flush all l3vni's nexthop and rmac db.
Ticket:CM-30338
Reviewed By:CCR-10489
Testing Done:
Performed multiple networking restart and checked neigh and
bridge fdb tables for respective nexthop and router mac entry
programmed.
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
Include any installed backup nexthops when installing
pseudowires; include installed backups in vty and json
pw show output.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Improve vty output for routes and lsps with backups, including
json. Simplify or correct some code that uses both primary and
backup nexthops in dplane, nht.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Prevent string manipulation where we might have data
passed into that is larger than the buffer we are pushing into.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Add vrf as key in Rib operational nexthop list
PR 6296 has added vrf as key in nexthop list.
Rib operational model uses nexthop list, adding
vrf key into northbound callback.
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
Add a route_entry flag to indicate the presence of a fib
(installed) list of nexthops - more explicit and clearer.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Initial changes to support a nexthop with multiple backups. Lib
changes to hold a small array in each primary, zapi message
changes to support sending multiple backups, and daemon
changes to show commands to support multiple backups. The config
input for multiple backup indices is not present here.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
This commit avoids freeing the iptable context, once created. the case
where there is an error when reading zapi stream simply needs to free
the zpi context.
Fixes: ("8b5c4dce07e6 zebra: fix iptable memleak, fix free funcs")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
We do not need to know anything about rules in afi 128/129
at this point in time. Just note it with a zebra kernel
debug and move on. This is not something that a operator
can do anything with and at this point in time FRR
does not care.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Include any installed backups when updating the local kernel
after processing an async notification. This includes routes'
nexthops and LSPs' nhlfes.
Add the 'b' character to the route show display and header to
indicate backup nexthops.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Fix the function encoding evpn neighbor. The size of the buffer
for the netlink message wasn't correct and because of that we thought that
the message didn't fit entirely in the buffer and thus we were not sending
the update to the kernel.
Signed-off-by: Jakub Urbańczyk <xthaid@gmail.com>
Extend PBR maps to discriminate by Differentiated Services Code Point and / or
Explicit Congestion Notification fields. These fields are used in the IP header
for classifying network traffic.
0 1 2 3 4 5 6 7
+-----+-----+-----+-----+-----+-----+-----+-----+
| DS FIELD, DSCP | ECN FIELD |
+-----+-----+-----+-----+-----+-----+-----+-----+
DSCP: differentiated services codepoint
ECN: Explicit Congestion Notification
Signed-off-by: Wesley Coakley <wcoakley@nvidia.com>
Signed-off-by: Saurav Kumar Paul <saurav@cumulusnetworks.com>
Remove mid-string line breaks, cf. workflow doc:
.. [#tool_style_conflicts] For example, lines over 80 characters are allowed
for text strings to make it possible to search the code for them: please
see `Linux kernel style (breaking long lines and strings)
<https://www.kernel.org/doc/html/v4.10/process/coding-style.html#breaking-long-lines-and-strings>`_
and `Issue #1794 <https://github.com/FRRouting/frr/issues/1794>`_.
Scripted commit, idempotent to running:
```
python3 tools/stringmangle.py --unwrap `git ls-files | egrep '\.[ch]$'`
```
Signed-off-by: David Lamparter <equinox@diac24.net>
If we are asked to check if a nexthop is active and it matches a
connected route but the ifindex on it does not match the interface
with the connected route, mark as inactive. This is a bad nexthop.
Before, we would skip this check and just assume any nexthop that matches
on a connected route is valid and return here then fail during
installation. This adds a check for the IPV*_ifindex nexthop case where the
ifindex we have been sent doesn't match.
Old:
F>r 0.0.0.0/0 [200/0] via 20.0.0.2, test, weight 1, 00:00:27
r via 40.4.4.4, lo, weight 1, 00:00:27
New:
F>* 0.0.0.0/0 [200/0] via 20.0.0.2, test, weight 1, 00:00:06
* via 40.4.4.4, lo inactive, weight 1, 00:00:06
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
`force_nhg` is only settable when calling from `fpm`, so if the kernel
was using next hop groups it would override our knob.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Clean up some awkward code in a couple of places where we're
processing lsp results from the dataplane. Also add some more
debugs in those paths.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Check backup nhlfes/nexthops for 'active' status when checking
an LSP. Also tweak the show command output for backup nhlfes
slightly.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Collapse some apis where primary and backup nhlfe code
was very similar, generally using a single common api
and using a bool to distinguish between primary and
backup.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Add an init api (based on what had been a private/static api)
to allow a caller to init a context and use it to generate LSP
updates. This might be useful for testing, or from a dplane
plugin.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Include backup nexthops when examining routes that resolve
NHT requests. Include installed backups when sending nexthops
in zapi messages to client daemons.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
When handling a fib notification event that involves a route
with backup nexthops, be clearer about representing the
installed state of the backups: any installed backup will be
on a dedicated route_entry list.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Include backup nexthops in json output; function-ify the json
output for nexthops; revise the display of backup nexthops to
use the 'b' character.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
