anuradhak [Fri, 18 Nov 2016 17:12:27 +0000 (09:12 -0800)]
pim-anycast-rp: Add limited support for secondary addresses.
Anycast requires that the lo interface be associated with multiple
addresses. One is the anycast IP address (which is the same on all RPs
participating in RP redundancy) and the second is the unique IP address
that will be used as the router id by routing protocols.
To accomodate that we maintain a list of secondary addresses per-pim iface
and allow any of them to be the RP address. This lets the I_am_RP macro
succeed on anycast RPs.
Note that the support is limited i.e. we don't actually advertise a
secondary list to the neighbors. This is assuming the anycast IP will never
be used as a router id i.e. will never be an RPF neighbor.
Sample output:
==============
dell-s6000-04# sh ip pim interface lo
Interface : lo
State : up
Address : 100.1.1.1 (primary)
100.1.1.2
100.1.1.3
100.1.2.1
>>>>>>> SNIP >>>>>>>>>>>>>>>
dell-s6000-04# sh ip pim interface lo json
{
"lo":{
"name":"lo",
"state":"up",
"address":"100.1.1.1",
"index":1,
"lanDelayEnabled":true,
"secondaryAddressList":[
"100.1.1.2",
"100.1.1.3",
"100.1.2.1"
],
>>>>>>> SNIP >>>>>>>>>>>>>>>
dell-s6000-04#sh ip pim rp-info
RP address group/prefix-list OIF I am RP
100.1.2.1 224.0.0.0/4 lo yes
dell-s6000-04#
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Fri, 18 Nov 2016 00:57:10 +0000 (19:57 -0500)]
pimd: Set pim socket receive buffer to a larger value
There exists situations where we can receive data
faster than we can process it. Make the buffer
large enough to catch these situations for
the pim sockets.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
anuradhak [Tue, 15 Nov 2016 23:39:11 +0000 (15:39 -0800)]
pim-kat: changed kat handling to match rfc-4601 more closely.
1. This is needed to layout the MSDP macros for determining what SAs are
originated by a MSDP speaker.
2. We no longer let the kat timer expire on an active flow. Activity
counters/lastuse is polled via a wheel for every SG entry. If new
activity is detected the keepalive timer is started and SPT bit set.
A SRC_STREAM reference is also created for the entry if one doesn't
already exist.
3. If KAT actually expires it means the flow is no longer active. At
this point we stop advertising the SA to MSDP peers. We also pull
the SRC_STREAM reference (deleting the entry if there are no other
references).
PS: Checking counters on KAT expiry will come in the next change.
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Wed, 16 Nov 2016 19:38:14 +0000 (14:38 -0500)]
pimd: Increase kernel socket rcvbuf size.
We are receiving notifications from the linux
kernel that we are filling up the receive buffer
for upcalls into pimd. Let's increase the size
to something a bit bigger.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Tue, 15 Nov 2016 00:54:36 +0000 (19:54 -0500)]
pimd: Fix crash in pim_rp_show_information
When a 'show ip pim rp-info' is issued shortly
after a restart/start, pim will crash because
nexthop information has not been fully resolved
and the outgoing interface is NULL.
Ticket: CM-13567 Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
anuradhak [Sat, 12 Nov 2016 13:39:44 +0000 (05:39 -0800)]
pim-msdp: part-4: cli cleanup
1. Add support for mesh-group based configuration that is easy to apply
via automation. The older per-peer configuartion is temporarily hidden
and will be cleaned up later.
Sample config -
ip msdp mesh-group cumulus source 100.1.1.4
ip msdp mesh-group cumulus member 100.1.1.5
ip msdp mesh-group cumulus member 100.1.1.6
2. Added support for detail peer and sa-cache displays. Along with
filter keys.
3. Add json output for all the msdp displays.
With this commit basic support for anycast-RP with MSDP (in numbered
network is complete). Unnumbered support will be added separately.
Ticket: CM-13306
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Sat, 12 Nov 2016 02:21:49 +0000 (21:21 -0500)]
pimd: Removing impossible code
We've already allocated the mp data structure
and am using hash_alloc_intern for the hash_get
function. This will return the passed
in data structure. There is no possibility
of mp being NULL.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Fri, 11 Nov 2016 18:57:49 +0000 (13:57 -0500)]
lib: Fix thread_execute_crash
With the change to have thread_get fill inthe ->hist
pointer, thread_execute was missed and it
needs to fill in the .hist pointer for the
dummy thread created.
I'm not really sure why we need to call a
thread_execute on a function. When we
could, you know, just call the bloody
thing.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
anuradhak [Tue, 8 Nov 2016 18:34:31 +0000 (10:34 -0800)]
pim-msdp: part-3: use SA cache for setting up SPTs
1. Added a new MSDP source reference flag for creating (S,G) entries
based on the SA-cache. The RFC recommends treating as SA like rxing
a (S, G) join (which is a bit different then treating like a traffic
stream).
2. SA-SPT is only setup if we are RP for the group and a corresponding
(*,G) exists with a non-empty OIL.
3. When an SA is moved we need to let the SPT live if it is active (this
change will come in a subsequent CL).
Testing done:
1. SA first; SPT setup whenever (*, G) comes around.
2. (*, G) first. As soon as SA is added SPT is setup.
3. (*, G) del with valid SA entries around.
Ticket: CM-13306
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
vivek [Fri, 11 Nov 2016 02:49:43 +0000 (18:49 -0800)]
zebra: Perform safe walk of RIB entries in rib_process()
There is a scenario where a RIB entry is unlinked and freed during RIB
processing. However, the walk of the entries is not being performed in
a safe manner. Fix the code to do this correctly.
Donald Sharp [Thu, 10 Nov 2016 18:58:40 +0000 (13:58 -0500)]
lib: Slight Optimization of thread handling.
This commit does these things:
1) Make thread_add_unuse own the setting of THREAD_UNUSED.
2) Move thread->hist finding to to thread_get.
We are storing the thread->hist even when the thread
is on the unused. This means that we check to see
if the funcname or func have changed and we get new
history. Else we've probably just retrieved the last
unused which has the same func/funcanme. This is
a common practice to do THREAD_OFF/THREAD_ON in
quick succession.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com.
Donald Sharp [Tue, 8 Nov 2016 20:26:48 +0000 (15:26 -0500)]
pimd: Add Handler for Receive (*,G) join for (S,G,rpt)
According to Figure 5( Downstream per-interface (S,G,rpt)
state when we receive a (*,G) we need to move (S,G,rpt)
children of the (*,G) into different states. This
implements that.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
anuradhak [Mon, 31 Oct 2016 19:29:17 +0000 (12:29 -0700)]
pim-msdp: part-2: SA cache support
This commit includes -
1. Maintaining SA cache with local and remote entries.
2. Local SA entries - there are two cases where we pick up these -
- We are RP and got a source-register from the FHR.
- We are RP and FHR and learnt a new directly connected source on a
DR interface.
3. Local entries are pushed to peers immediately on addition and
periodically. An immediate push is also done when peer session is
established.
4. Remote SA entries - from other peers in the mesh group and passed
peer-RPF checks.
5. Remote entries are aged out. No other way to del them
currently. In the future we may add a knob to flush entries on
peer-down.
Testing done -
Misc topologies with CL routers plus basic interop with another vendor (
we can process their SA updates and they ours).
Sample output -
root@rp:~# vtysh -c "show ip msdp sa"
Source Group RP Uptime
33.1.1.1 239.1.1.2 local 00:02:34
33.1.1.1 239.1.1.3 local 00:02:19
44.1.1.1 239.1.1.4 100.1.3.1 00:01:12
44.1.1.1 239.1.1.5 100.1.3.1 00:00:55
root@rp:~#
Ticket: CM-13306
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Tue, 1 Nov 2016 00:49:18 +0000 (20:49 -0400)]
pimd: Allow FHR/RP/LHR to be one and the same
When we have a FHR/RP/LHR all on the same box, we were
experiencing a situation where we were not sending
a register stop nor where we setting the sptbit.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
fd
anuradhak [Tue, 25 Oct 2016 17:59:48 +0000 (10:59 -0700)]
pim-msdp: part-1 - initial protocol infra.
This commit includes the following changes -
1. Support for MSDP peer DB (hash and sorted list).
2. Support for the following timers - keepalive, connect-retry, hold.
3. TCP session management (lower-ip is active, higher-ip is passive).
4. MSDP KA packet rx/tx.
5. Limited temporary config (will be replaced with the more automation
friendly RP-set).
Testing done -
Peer bringup/deletion (including interop with another vendor)
Sample out -
root@dell-s6000-04:~# sudo vtysh -c "show ip msdp peer"
Peer Local Mesh-group State Uptime
100.1.1.1 100.1.2.1 default established 00:07:27
100.1.3.1 100.1.2.1 default established 00:31:50
root@dell-s6000-04:~#
Coming soon -
1. part-2: SA cache management.
2. part-3: SPT setup using source in SA cache.
3. part-4: CLI cleanup.
Ticket: CM-13306
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com> Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Mon, 31 Oct 2016 12:54:35 +0000 (08:54 -0400)]
pimd: Remove unused/unmaintained test commands
The test commands are not being maintained and
are not out of date with the rest of the system. There
are better ways to test code and in addition these
commands if entered by a user could seriously impact
their running system.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Sun, 30 Oct 2016 23:34:26 +0000 (19:34 -0400)]
pimd: When nexthop_lookup fails allow a retry.
We are seeing situations where nexthop lookups are failing
unexpectedly. Don't consider the lookup to have succeeded
in this case to allow the next lookup to work?
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Fri, 28 Oct 2016 17:43:13 +0000 (13:43 -0400)]
pimd: Find an interface that is both connected and setup for pim
When we are looking up the incoming interface for the ipmr
call back socket from the kernel, look to see if the src
is connected as well as has a valid pim_ifp to use.
This is to allow vrr configuration in a mlag env.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Thu, 27 Oct 2016 22:27:28 +0000 (18:27 -0400)]
pimd: Make sure we have valid pointer when printing debugs
When we print a debug in the pim_upstream_add, there
exists failure cases for pim_upstream_new where
we cannot create a upstream data structure. Make
sure the debug handles it right.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Donald Sharp [Thu, 27 Oct 2016 00:26:16 +0000 (20:26 -0400)]
pimd: Fix crash when igmp message comes in on non-configured interface
When we receive a igmp message through the kernel upcall, make
sure that we are configured to work on that interface via pim/igmp
before attempting to use that interface.
Ticket: CM-13338 Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Daniel Walton [Wed, 26 Oct 2016 14:03:29 +0000 (14:03 +0000)]
pimd: always build json for show commands
Signed-off-by: Daniel Walton <dwalton@cumulusnetworks.com>
This cleans up the following so that they always collect the data to
display in json structures and then either dumps the json output or
traverses it to produce the non-json output.
show ip pim local-membership
show ip pim interface