Feature overview:
=================
A 802.3ad bond can be setup to allow lacp-bypass. This is done to enable
servers to pxe boot without a LACP license i.e. allows the bond to go oper
up (with a single link) without LACP converging.
If an ES-bond is oper-up in an "LACP-bypass" state MH treats it as a non-ES
bond. This involves the following special handling -
1. If the bond is in a bypass-state the associated ES is placed in a
bypass state.
2. If an ES is in a bypass state -
a. DF election is disabled (i.e. assumed DF)
b. SPH filter is not installed.
3. MACs learnt via the host bond are advertised with a zero ESI.
When the ES moves out of "bypass" the MACs are moved from a zero-ESI to
the correct non-zero id. This is treated as a local station move.
Implementation:
===============
When (a) an ES is detached from a hostbond or (b) an ES-bond goes into
LACP bypass zebra deletes all the local macs (with that ES as destination)
in the kernel and its local db. BGP re-sends any imported MAC-IP routes
that may exist with this ES destination as remote routes i.e. zebra can
end up programming a MAC that was perviously local as remote pointing
to a VTEP-ECMP group.
When an ES is attached to a hostbond or an ES-bond goes
LACP-up (out of bypss) zebra again deletes all the local macs in the
kernel and its local db. At this point BGP resends any imported MAC-IP
routes that may exist with this ES destination as sync routes i.e.
zebra can end up programming a MAC that was perviously remote
as local pointing to an access port.
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
When the control plane protocol is created, the vrf structure is
allocated, and its address is stored in the northbound node.
The vrf structure may later be deleted by the user, which will lead to
a stale pointer stored in this node.
Instead of this, allow daemons that use the vrf pointer to register the
dependency between the control plane protocol and vrf nodes. This will
guarantee that the nodes will always be created and deleted together, and
there won't be any stale pointers.
Add such registration to staticd and pimd.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
When handling a large number of events at one time
FRR will call monotime and getrusage 2 times for each
event. With this change modify the code to change
this to (X events / 2) + 1 calls of getrusage and monotime
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Since some recent commit, building c++ code attempting to use zlog_debug
(or any other level) would fail with the following complaint:
lib/zlog.h:91:3: sorry, unimplemented: non-trivial designated
initializers not supported
};
^
lib/zlog.h:105:26: note: in expansion of macro ‘_zlog_ref’
#define zlog_debug(...) _zlog_ref(LOG_DEBUG, __VA_ARGS__)
This is due to out-of-order initialization of the xrefdata struct
fields. Setting them all in the order in which they are defined
fixes the issue.
Signed-off-by: Emanuele Di Pascale <emanuele@voltanet.io>
The changes add the "jsoncmp_pass" and the "jsoncmp_fail" commands to
compare VTY shell's JSON output to an expected JSON object during
topotests using the LabN testing framework. This helps to eliminate
false negative test results (i.e. due to routes beeing out of order
after convergence or cosmetic changes in VTY shell's text output).
Signed-off-by: David Schweizer <dschweizer@opensourcerouting.org>
When running clippy, the main function in it's
error path could leak the memory pointed to by name.
Fix this. This was/is reported by clang SA.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
For MH the SVI MAC is advertised to prevent flooding of ARP replies.
But because of a bug the SVI MAC was being added to the zebra database
but not sent to bgpd for advertising.
Ticket: CM-33329
Signed-off-by: Anuradha Karuppiah <anuradhak@nvidia.com>
As a part of FRR shutdown interfaces are force flushed (in an arbitary
order). Interfaces are already down at that point i.e. resources like
SVI-MAC have already been released. Attempting to clean it up again
as a part of the force-flush was resulting in access of freed up memory -
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
==26457== Thread 1:
==26457== Invalid read of size 8
==26457== at 0x1AE6B0: zebra_evpn_acc_bd_svi_set (zebra_evpn_mh.c:606)
==26457== by 0x1B1460: zebra_evpn_if_cleanup (zebra_evpn_mh.c:1040)
==26457== by 0x13CA69: if_zebra_delete_hook (interface.c:244)
==26457== by 0x48A0E34: hook_call_if_del (if.c:59)
==26457== by 0x48A0E34: if_delete_retain (if.c:290)
==26457== by 0x48A2F94: if_delete (if.c:313)
==26457== by 0x48A3169: if_terminate (if.c:1217)
==26457== by 0x48E0024: vrf_delete (vrf.c:254)
==26457== by 0x48E0024: vrf_delete (vrf.c:225)
==26457== by 0x48E02FE: vrf_terminate (vrf.c:551)
==26457== by 0x1442E1: sigint (main.c:203)
==26457== by 0x1442E1: sigint (main.c:141)
==26457== by 0x48CF862: quagga_sigevent_process (sigevent.c:103)
==26457== by 0x48DD324: thread_fetch (thread.c:1404)
==26457== by 0x48A926A: frr_run (libfrr.c:1122)
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
(gdb) bt
(gdb) fr 5
1037 zebra/zebra_evpn_mh.c: No such file or directory.
(gdb) p zif->ifp->name
$2 = "vlan131", '\000' <repeats 12 times>
(gdb) p zif->link->info
$5 = (void *) 0x1
(gdb) p/x zif->ifp->flags
$7 = 0x1002
(gdb)
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Ticket: CM-32435
Signed-off-by: Anuradha Karuppiah <anuradhak@nvidia.com>
zebra crash is seen while cleaning up evpn interface
during shutdown event.
evpn interface clean up is called from vrf_delete callback
(gdb) frame 4
(is_up=false, br_zif=0x0, vlan_zif=0x557f31fb36f0) at zebra/zebra_evpn_mh.c:614
614 zebra/zebra_evpn_mh.c: No such file or directory.
(gdb) p tmp_br_zif
$1 = (struct zebra_if *) 0x0
(gdb) p vlan_zif->link
$2 = (struct interface *) 0x557f31fb2d40
(gdb) p vlan_zif->link->info
$3 = (void *) 0x0
(gdb) p zebra_if->ifp->name
No symbol "zebra_if" in current context.
(gdb) p vlan_zif->ifp->name
$4 = "peerlink-3.4094\000\000\000\000"
Ticket:CM-32435
Reviewed By:CCR-10957
Testing Done:
Signed-off-by: Chirag Shah <chirag@nvidia.com>
Added support for advertising SVI MAC if EVPN-MH is enabled.
In the case of EVPN MH arp replies from an attached server can be sent to
the ES-peer. To prevent flooding of the reply the SVI MAC needs to be
advertised by default.
Note:
advertise-svi-ip could have been used as an alternate way to advertise
SVI MAC. However that config cannot be turned on if SVI IPs are
re-used (which is done to avoid wasting IP addresses in a subnet).
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
SVI IP is being advertised unconditionally i.e. even if disabled (and
that is the default config). This can be problematic when the SVI address
is re-used across racks.
Added the user config condition in all the relevant places where the
SVI advertisement is triggered.
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
flowspec address family can now use attribute-unchanged attribute.
This parameter is necessary when it comes to play with
route-server-client, as that latter command forces to change
attribute-unchanged nexthop.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
this particular callback had not been implemented in the northbound
conversion, so the command had no effect.
Signed-off-by: Emanuele Di Pascale <emanuele@voltanet.io>
Add more details to these logs to help make it easier to determine why
ospf6 adjacency is not coming up. Also make these logs show up without
having to turn on debug logging, again making it easier to debug the
misconfiguration.
Signed-off-by: Lynne Morrison <lynne@voltaio.net>
Only ask the event-loop poll() to awaken if a newly-added timer
actually might have changed the required timeout. Also compute
timer deadline outside of mutex locks.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Recent changes to allow bgpd to handle v6 LL slightly
differently in the nexthop tracking code has not
interacted well with the blackhole nexthop change
for peers. Modify the code to do the right thing
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
