Donald Sharp [Mon, 29 Jan 2018 22:52:15 +0000 (17:52 -0500)]
zebra: Fix crash when dereferencing dest->selected_fib
When a rib_unlink() event is directly called for a
route_entry we need to see if the dest->selected_fib
is the same and just unset the dest->selected_fib.
This was happening for redistributed table 10 routes
into BGP.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Sat, 27 Jan 2018 23:56:30 +0000 (18:56 -0500)]
zebra: Fix failure to parse src
If src happens to point at all 0's due to not initializing
it and if the address passed in is not a v6 address then
we would not set src in the AF_INET6 call and would
fail the (src.ipv4.s_addr && inet_pton(AF_INET...)
call. Thus causing us to return a NULL and make
the routemap code think there was an issue.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Don Slice [Thu, 25 Jan 2018 17:45:40 +0000 (17:45 +0000)]
bgpd: remove poorly located bestpath json output
The bestpath multipath-relax setting was added to the output of
"show ip bgp neighbor json" several months ago but this is not
the correct place to display that information and this fix removes
it from there. The multipath-relax setting was also added
to the output of "show ip bgp sum json" which is fine.
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
Donald Sharp [Thu, 25 Jan 2018 01:53:40 +0000 (20:53 -0500)]
zebra: Fix crash in ptm code
The code change to switch from stream_getX to STREAM_GETX added
a goto statement to be handled for a failure case. The failure
case was properly handled but the normal case was not tested
properly and there exists a situation where we would free
the out_ctxt 2 times. Prevent that from happening.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Quentin Young [Wed, 24 Jan 2018 16:07:27 +0000 (11:07 -0500)]
bgpd: update pthreads to use lib changes
Use the new threading facilities provided in lib/ to streamline the
threads used in bgpd. In particular, all of the lifecycle code has been
removed from the I/O thread and replaced with the default loop. Did not
do the same to the keepalives thread as it is much smaller (doesn't need
the event system).
Also cleaned up some comments to match the style guide.
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Quentin Young [Mon, 22 Jan 2018 19:23:55 +0000 (14:23 -0500)]
lib: streamline frr_pthreads, add default loop
Some work on FRR's pthread wrapper.
* Provide a built-in way to synchronize thread startup
* Make utility functions take frr_pthread * instead of its integer ID
* Pass frr_pthread * as pthread start function argument
* Correct some comment styling
* Rename some variables to match naming conventions in the file
* Change parameter ordering in stop function prototype to follow the
convention in the other functions
* Default new frr_pthreads to using a vanilla event loop
For the last point, the original goal when designing the implementation
of pthreads into FRR was to be able to use the thread.c event based
system inside pthreads. This code essentially encapuslates all the
thread.c functionality into an easy to use pthread out of the box.
Creating a new frr_pthread with a null attributes field will cause the
created frr_pthread to run a thread.c event loop. The upshot of this is
that it is now possible to safely run existing functions in a pthread in
roughly 3 lines of code. It also serves as an example / starting point
for others.
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Donald Sharp [Wed, 24 Jan 2018 13:22:57 +0000 (08:22 -0500)]
zebra: Modify southbound interface to pass `struct route_node`
The route_node that we are working on is going to be interesting
to the kernel_route_rib_pass_fail. So I am setting up the
code to allow me to pass it. This will be done in a subsuquent
commit.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
If a BGP message header fails validation we send a BGP NOTIFICATION from
the I/O thread. At this time we clear the output buffer, push a
NOTIFICATION and then call the manual write function for errors. But in
between the push and the write the main thread could have pushed some
other message. Thus we need to hold the lock for the duration of the
function. TOCTTOU.
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Olivier Dugeon [Tue, 23 Jan 2018 15:15:58 +0000 (16:15 +0100)]
OSPFD: Solve Issue #1652
Issue 1652 was related to OSPF Crash on termination when ospf is
configured to flood self Opaque LSA e.g TE or RI Opaque LSA.
Analysis:
The problem resides in free_opaque_info_per_type() line 576 of
ospf_opaque.c. Once LSA flush, the function removes by calling
listnode_delete() function the opaque_info_per_type data structure.
However, this is also performed at the upper level function
ospf_opaque_type10lsa_term() which call list_delete_and_null() function.
This result into a double free pointer exception.
Solution:
Remove call to listnode_delete() calls in free_opaque_info_per_type()
function as it is done by list_delete_and_null(). Delete lines 592 - 615.
Remove also second call to ospf_opaque_type10lsa_term() in ospfd.c line 848.
Chirag Shah [Wed, 17 Jan 2018 18:55:46 +0000 (10:55 -0800)]
ospf6d: spf calculation w/ multiple router lsas
An OSPFv3 enabled Router can originate or receive
multiple Link State-IDs for Router LSAs.
As per RFC 5340 A 4.3, more than one Router LSAs,
from given Vertex is considered (as concatenated)
single large Router LSA.
Created hidden show command to simulate concatenated
large LSA from advertising/self Router LSAs.
Ticket:CM-19329
Reviewed By:
Testing Done:
Simulate 160 subinterfaces between R1 === R2--R3,
This triggers R1 and R2 to generate multiple link state
IDs for Router LSAs. During SPF calculation only aggregated
single router LSA processed and SPF tree formed.
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
When a nexthop is resolved via a label based nexthop, copy
the labels into the newly created recursive nexthop.
Please note that this does not fix the case where we
have a label based nexthop that is recursively resolved
through *another* nexthop that is also label based.
In this case we need to create a new label stack
for those routes.
Philippe Guibert [Wed, 10 Jan 2018 13:13:50 +0000 (14:13 +0100)]
lib: ns_id_t changed to 32 bit
Because the VRF_ID is mapped into 32 bit, and because when NETNS will be
the backend of VRF, then the NS identifier must also be encoded as 32
bit.
Also, the NS_UNKNOWN value is changed accordingly to UINT32_MAX.
Also, the NS_UNKNOWN and NS_DEFAULT values are removed from zebra_ns.h
and kept on ns.h header file.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
The number of vrf bitmap groups is increased so as to avoid consuming
too much memory. This fix is related to a fork memory that occured when
running pimd as daemon.
A check on memory consumed shows that the memory consumed goes from
33480ko to 46888ko with that change. This is less compared to if the
value of the bitmap groups is increased to 16 ( 852776ko).
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Philippe Guibert [Thu, 14 Dec 2017 15:01:36 +0000 (16:01 +0100)]
lib: increase vrf_id from 16 bit to 32 bit identifier
This is a preparatory work for configuring vrf/frr over netns
vrf structure is being changed to 32 bit, and the VRF will have the
possibility to have a backend made up of NETNS.
Let's put some history.
Initially the 32 bit was because one wanted to map on vrf_id both the
VRFLITE and the NSID.
Initially, one would have liked to make zebra configure at the same time
both vrf lite and vrf from netns in a flat way. From the show
running perspective, one would have had both kind of vrfs, thatone
would configure on the same way.
however, it leads to inconsistencies in concepts, because it mixes vrf
vrf with vrf, and vrf is not always mapped with netns.
For instance, logical-router could also be used with netns. In that
case, it would not be possible to map vrf with netns.
There was an other reason why 32 bit is proposed. this is because
some systems handle NSID to 32 bits. As vrf lite exists only on
Linux, there are other systems that would like to use an other vrf
backend than vrf lite. The netns backend for vrf will be used for that
too. for instance, for windows or freebsd, some similar
netns concept exists; so it will be easier to reuse netns
backend for vrf, than reusing vrflite backend for vrf.
This commit is here to extend vrf_id to 32 bits. Following commits in a
second step will help in enable a VRF backend.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
vivek [Sat, 20 Jan 2018 21:21:05 +0000 (13:21 -0800)]
zebra: Install connected routes during VRF change only if interface is up
During VRF change handling, the connected route for the interface should be
installed only if the interface is up. Otherwise, we end up with duplicate
connected routes which can lead to other problems.
Chirag Shah [Sat, 20 Jan 2018 02:17:53 +0000 (18:17 -0800)]
ospfd: show ip ospf neighbor json output format
Current json output does not differentiate start of
neighbor ip object. Adding "neighbors" keyword at the
beginning of neighbor list. This is useful when
displaying vrf level output along with neighbors
list.
Ticket:CM-19097
Testing Done:
show ip ospf neighbor json
show ip ospf vrf all neighbor json
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
Donald Sharp [Thu, 18 Jan 2018 14:17:57 +0000 (09:17 -0500)]
zebra: Add some more debug information on read issues in FPM
When we receive a read failure in handling a FPM read
let's add a bit more information to what we think has
gone wrong, in a hope that debugging will be a bit easier.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Quentin Young [Tue, 16 Jan 2018 20:44:14 +0000 (15:44 -0500)]
frr: update README
* Clarify that FRR implements as well as manages protocols
* Move IS-IS out of "early support"
* Add Babel - friends don't leave friends out of READMEs!
* Add mention of further information
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Chirag Shah [Sat, 30 Dec 2017 05:01:07 +0000 (21:01 -0800)]
ospfd: show ip ospf interface json output format
Current json output does not differentiate start of
interface objects. Adding "interfaces" keyword at the
beginning of the interface list. This is useful
when displaying vrf level output along with interface list.
Ticket:CM-19115
Testing Done:
show ip ospf vrf all interface json
show ip ospf vrf all interface <specific intf> json
show ip ospf interface json
show ip ospf interface <specific intf> json
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
Quentin Young [Fri, 1 Dec 2017 19:44:32 +0000 (14:44 -0500)]
lib: avoid crash when cancelling invalid rw job
There are some observed instances where we end up trying to cancel a rw
job based on a file descriptor that we don't have a reference on. The
specific cancel function for rw jobs assumes it's called with a file
descriptor that is valid within pollfds and will cause a segmentation
fault by buffer overrun if this is not the case.
Instead log it and move on. Since the fd does not exist this should
patch over the buggy behavior and provide additional information to help
in finding the root cause.
Reviewed-by: Donald Sharp <sharpd@cumulusnetworks.com> Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Quentin Young [Fri, 12 Jan 2018 19:57:57 +0000 (14:57 -0500)]
bgpd: disallow invalid config at cli layer
Remove the ability to attempt to configure a couple of options on
directly connected neighbors that don't make sense for them, as well as
the soft error handling code.
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Quentin Young [Fri, 12 Jan 2018 17:35:19 +0000 (12:35 -0500)]
vtysh: add ability to output to file
Add ability to set file destination for all vtysh output, with the
exception of tab-complete and similar meta output. This is useful for
inline recording of some information without exiting the shell.
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Donald Sharp [Thu, 11 Jan 2018 16:47:04 +0000 (11:47 -0500)]
zebra: Encode the ifindex over netlink
In order for routes to be leaked the ifindex must be sent
down into the kernel over the netlink protocol. So
send it( we always figure it out ) when we add the
route.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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