As there are subtle differences between VRF-lite and VRF-netns,
some information is given to the operator on what can be/ can not be
done.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
During Intra brouter calculation, brouters will be
marked for remove. if one of the brouter is removed,
as part of its remove callback, ospf6_abr_examin_summary
is performed where marked for brouter would be removed.
Since refcount of next brouter node still higher, it will
retain one node with dangled next brouter pointer.
When intra brouter calculation iteration goes to next node,
where accessing free node causes a crash.
Ticket:CM-20807
Testing Done:
Configure multilple ABR routers between area 0 and area x, y.
Remove ospf6 configuration on area x, y abrs and check area 0
Intra brouter calculations.
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
Avoid duplicate ABR brouter entry and
its nexthops.
The route lookup results in first element of the
route/redix node. In case of Intra and inter area
brouter, the first element always intra brouter.
the first element comparison results in always addition
of new element for inter area brouter in brouter table.
Now, iterate all elements of the route node and compare
for brouter origin, if it is same simply update its
nexthops to FIB.
brouter and brouter route nexthops should be merge to avoid
duplicate nexthops for the inter area routes.
Ticket:CM-20807
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
Attribute set on peer was being overridden when set on the peer-group.
This commit also adds a parallel flags array that indicates whether a
particular flag is sourced from the peer-group or is peer-specific. It
assumes the default state of all flags is unset. This looks to be true
except in the case of PEER_FLAG_SEND_COMMUNITY,
PEER_FLAG_SEND_EXT_COMMUNITY, and PEER_FLAG_SEND_LARGE_COMMUNITY; these
flags are set by default except when the user specifies to use
config-type = cisco. However the flag field can merely be flipped to
mean the negation of those options in a future commit.
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Explain the --enable-ecmp=X configure option as well as
modify the zebra user doc to explain the -e X option.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Meeting the feasibility condition is required also for routes
meeting the variance condition.
Signed-off-by: Piotr Jurkiewicz <piotr.jerzy.jurkiewicz@gmail.com>
EVPN prefix depends on the EVPN route type.
Currently, in FRR we have a prefix_evpn/evpn_addr which relates to a evpn prefix.
We need to convert this to encompass an union of various EVPN route-types.
This diff handles the necessary code changes to adopt the new struct evpn_addr.
Signed-off-by: Mitesh Kanjariya <mitesh@cumulusnetworks.com>
Since we are writing into the name field which is PBR_MAP_NAMELEN
size, we are expecting this to field to be at max 100 bytes.
Newer compilers understand that the %s portion may be up to
100 bytes( because of the size of the string. The %u portion
is expected to be 10 bytes. So in `theory` there are situations
where we might truncate. The reality this is never going to
happen( who is going to create a nexthop group name that is
over say 30 characters? ). As such we are expecting the
calling function to subtract 10 from the size_t l before
we pass it in to get around this new gcc fun.
Fixes: #2163
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Handle multiple PREFIX_SID's at the same time. The draft clearly
states that multiple should be handled and we have a actual pcap
file that clearly has multiple PREFIX_SID's at the same time.
Fixes: #2153
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
re->status and re->flags both influence our decision states
for rib processing. Yet it's impossible to see them. Add
a tiny bit of code to allow us to look at them when things
are not behaving like we would expect.
Additionally dump the nexthop->flags at the same time for
the same reasons.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
When the underlying networking subsystem is fundamentally
changed via some system controls. If we have msdp running
there exists a possibility that we need to stop some running
timers to prevent a crash.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
We have run across a few cases where the startup timeout is
ocurring on heavily loaded systems. This is especially true
in simulation environments where the hypervisor load is
extremely high.
Modify the code base to give ourselves more time to startup.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
The zns->ns pointer is not created until we get a callback
from the kernel that a ns exists. This should potentially
fix a crash in the *BSD code path.
Fixes: #2152
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
When there are multiple advertisers/paths to reach
Intra-Prefix route, if any path is removed,
re-added back, it does add to the same route node.
ospf6 intra prefix, first stored in oa->route_table
then as part of add cb, it would add to ospf6->route_table
which adds to FIB.
When copying a route with its paths & NHs from oa->table to
ospf6->table the path origin should not be modified otherwise
ospf6->table would not find existing node rather it appends
new node.
Use spf_table to fetch nexthops for a given advertisers/path,
to form effective nexthop list for a route.
Ticket:CM-16139
Testing Done:
R2 ---- R3
| |
R1 ---- R4
Inject Intra Ara Prefix LSA from R1 & R3, validate R2 and R4
having two origination point/paths to reach for a route.
Trigger link flap, frr restart or remove/readd R3's INP one of the
injection point.
Remove link between R4 to R1 and validate R3 carrying single
path to reach prefix.
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
