David Lamparter [Wed, 6 Jul 2022 08:48:56 +0000 (10:48 +0200)]
lib: use assume() for SA fixing, add explainer
Literally 4 minutes after hitting merge on Mark's previous fix for this
I remembered we have an `assume()` macro in compiler.h which seems like
the right tool for this.
(... and if I'm touching it, I might as well add a little text
explaining what's going on here.)
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
lib, vtysh: Add `allow-reserved-ranges` global command
It will be used to allow/deny using IPv4 reserved ranges (Class E) for Zebra
(configuring interface address) or BGP (allow next-hop to be from this range).
Louis Scalbert [Fri, 1 Jul 2022 10:11:03 +0000 (12:11 +0200)]
topostest: bgp_conditional_advertisement cleanup
The bgp_conditional_advertisement topotest runs all the test cases in
the same function. It is not easy to debug it because the pytest
"--pause" argument does not make breaks between test cases.
Dispatch the test-cases into functions to benefit from the "--pause"
feature.
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Donald Sharp [Thu, 30 Jun 2022 13:03:12 +0000 (09:03 -0400)]
zebra: Add more cases to proto2zebra for understanding kernel routes
Just some missing ones. Make zebra stop complaining, was getting
some messages from proto2zebra when doing testing, let's clean
that up from happening.
Donald Sharp [Thu, 30 Jun 2022 14:04:26 +0000 (10:04 -0400)]
zebra: Notice to end operator when a failure happens
When reading a multipath route and we detect an encoding
error from the kernel( yeah I don't think so either ),
let's tell the operator what happened to that route.
Louis Scalbert [Fri, 27 May 2022 08:42:53 +0000 (10:42 +0200)]
isisd: fix infinite loop when parsing LSPs
Fixing the crash:
> #0 0x0000560aa80f8e30 in lspdb_const_find (h=<error reading variable: Cannot access memory at address 0x7fff5e95efe8>, item=<error reading variable: Cannot access memory at address 0x7fff5e95efe0>) at ./isisd/isis_lsp.h:64
> #1 0x0000560aa80f8e9d in lspdb_find (h=0x560aaa1ed3b8, item=0x7fff5e95f050) at ./isisd/isis_lsp.h:64
> #2 0x0000560aa80f92f9 in lsp_search (head=0x560aaa1ed3b8, id=0x7fff5e95f200 "") at isisd/isis_lsp.c:100
> #3 0x0000560aa8113d69 in spf_adj_list_parse_tlv (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, id=0x560aad331a78 "", desig_is_id=0x0, pseudo_metric=0, metric=3, oldmetric=false, subtlvs=0x0) at isisd/isis_spf.c:1330
> #4 0x0000560aa811419d in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1429
> #5 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442
> #6 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442
> (...)
> #65507 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442
> #65508 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442
> #65509 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1ff8e0, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442
> #65510 0x0000560aa81141fe in spf_adj_list_parse_lsp (spftree=0x560aaa1f09d0, adj_list=0x560aaa214480, lsp=0x560aaa1f4e50, pseudo_nodeid=0x0, pseudo_metric=0) at isisd/isis_spf.c:1442
> #65511 0x0000560aa8114313 in isis_spf_build_adj_list (spftree=0x560aaa1f09d0, lsp=0x560aaa1f4e50) at isisd/isis_spf.c:1455
> #65512 0x0000560aa8114f09 in isis_run_spf (spftree=0x560aaa1f09d0) at isisd/isis_spf.c:1775
> #65513 0x0000560aa8115057 in isis_run_spf_with_protection (area=0x560aaa1ed3b0, spftree=0x560aaa1f09d0) at isisd/isis_spf.c:1801
> #65514 0x0000560aa8115311 in isis_run_spf_cb (thread=0x7fff5f15e5a0) at isisd/isis_spf.c:1859
> #65515 0x00007f90bac66dcc in thread_call (thread=0x7fff5f15e5a0) at lib/thread.c:2002
> #65516 0x00007f90bac013ee in frr_run (master=0x560aa9f5cb40) at lib/libfrr.c:1196
> #65517 0x0000560aa80e7da2 in main (argc=2, argv=0x7fff5f15e7b8, envp=0x7fff5f15e7d0) at isisd/isis_main.c:273
The fix is similar to the crash fix included in d9884a758c
("isisd: Prepare IS-IS for Link State support"). The fix was:
> diff --git a/isisd/isis_lsp.c b/isisd/isis_lsp.c
> index 94353a5bc8..92d329f035 100644
> --- a/isisd/isis_lsp.c
> +++ b/isisd/isis_lsp.c
> @@ -2166,7 +2178,7 @@ int isis_lsp_iterate_ip_reach(struct isis_lsp *lsp, int family, uint16_t mtid,
> if (lsp->hdr.seqno == 0 || lsp->hdr.rem_lifetime == 0)
> return LSP_ITER_CONTINUE;
>
> - /* Parse main LSP. */
> + /* Parse LSP */
> if (lsp->tlvs) {
> if (!fabricd && !pseudo_lsp && family == AF_INET
> && mtid == ISIS_MT_IPV4_UNICAST) {
> @@ -2236,13 +2248,17 @@ int isis_lsp_iterate_ip_reach(struct isis_lsp *lsp, int family, uint16_t mtid,
> }
> }
>
> - /* Parse LSP fragments. */
> - for (ALL_LIST_ELEMENTS_RO(lsp->lspu.frags, node, frag)) {
> - if (!frag->tlvs)
> - continue;
> + /* Parse LSP fragments if it is not a fragment itself */
> + if (!LSP_FRAGMENT(lsp->hdr.lsp_id))
> + for (ALL_LIST_ELEMENTS_RO(lsp->lspu.frags, node, frag)) {
> + if (!frag->tlvs)
> + continue;
>
> - isis_lsp_iterate_ip_reach(frag, family, mtid, cb, arg);
> - }
> + if (isis_lsp_iterate_ip_reach(frag, family, mtid, cb,
> + arg)
> + == LSP_ITER_STOP)
> + return LSP_ITER_STOP;
> + }
>
> return LSP_ITER_CONTINUE;
> }
Fixes: 7b36d36e0e ("isisd: make the SPF code more modular") Fixes: 5e56a50559 ("isisd: fix infinite loop when parsing LSPs") Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Donald Sharp [Thu, 30 Jun 2022 12:03:02 +0000 (08:03 -0400)]
zebra: Realign SOL_NETLINK to warn when FRR does not have it
There exists a possibility that an end operator has choosen
to compile FRR on an extremely old KERNEL that does not support
the SOL_NETLINK sockopt call. If so let's note it for them
instead of stuff silently not working.
Donald Sharp [Thu, 30 Jun 2022 11:50:04 +0000 (07:50 -0400)]
zebra: Correct implication of SOL_NETLINK NETLINK_ADD_MEMBERSHIP usage
The usage of SOL_NETLINK for adding memberships of interest is
1 group per call. The netink_socket function implied that
the call could be a bitfield of values. This is not correct
at all. This will trip someone else up in the future when
a new value is needed. Let's get it right `now` before
it becomes a problem.
Let's also add a bit of extra code to give operator a better
understanding of what went wrong when a kernel does not
support the option.
Finally as a point of future reference should FRR just switch
over to a loop to add the required loops instead of having
this bastardized approach of some going in one way and some
going in another way?
Implementing the TBD of watermark-warn CLI for IPv6 MLD
This command can be use to warn the user
when more than the desired limit of groups gets configured.
Signed-off-by: Sai Gomathi N <nsaigomathi@vmware.com>
Dmitrii Turlupov [Wed, 29 Jun 2022 13:33:01 +0000 (16:33 +0300)]
ospfd: set/unset bfd profile
Before this patch we can enable 'ip ospf bfd' via '[no] ip ospf bfd profile ...' commads.
After patch '[no] ip ospf bfd profile ...' actual only if 'ip ospf bfd' is set.
Donald Sharp [Wed, 29 Jun 2022 19:24:20 +0000 (15:24 -0400)]
zebra: make rib_process_dplane_results own ctx freeing
The rib_process_dplane_results function was having each
sub function handler process the results and then
free the ctx. Lot's of functionality that needs to remember
to free the context. Let's just free it in the main loop.
Donald Sharp [Tue, 28 Jun 2022 14:26:52 +0000 (10:26 -0400)]
lib: Allow downgrade of all caps when none are specified
Staticd when run tells privs.c that it does not need any
priviledges. The lib/privs.c code was not downgrading
any and all permissions it may have been given at startup.
Since we don't need any let's actually tell the system that
FRR does not need the capabilities anymore in the case
where a daemon does not ask for any cap's.
Sarita Patra [Wed, 29 Jun 2022 13:34:19 +0000 (06:34 -0700)]
pimd: Register stop message sent with mask 32
As per RFC 4601 section 4.9.4, For Register-Stops,
the Mask Len field contains full address length * 8
(e.g. 32 for IPv4 native encoding) (e.g. 128 for IPv6),
if the message is sent for a single group
Trey Aspelund [Tue, 28 Jun 2022 14:08:55 +0000 (14:08 +0000)]
bgpd: include 0 in configured hold/keepalive
The default keepalive/hold timers are always exposed via this commit:
```
commit 9b1b96233d7204263d409ea6c504b316af9e533f (origin/bgp_timer_always_on)
Author: Trey Aspelund <taspelund@nvidia.com>
Date: Mon Jun 27 23:20:33 2022 +0000
bgpd: always display keepalive/hold intervals
`show bgp neighbors <peer> [json]` was only displaying the configured
keepalive and holdtime intervals when they differed from the default
values. Since default config is still config, let's make sure these
values are always displayed.
However it mistakenly changed the logic to only display the peer's
timers if the configured value was non-zero. This updates the logic to
check PEER_FLAG_TIMER to determine if the values were configured,
given 0 is a valid value (to disable keepalives).
pimd: Querier to non-querier transition to be ignored
Fixing IGMPv2 ANVL Conformance issue 3.10
As per RFC 2236 section 3, when the leave message is received at a querier,
it starts sending Query messages for "last Member Query Interval*query count"
During this time there should not be any querier to non-querier
transition and the same router needs to send the remaning queries.
Currently the code is handling this scenario only when leave is receive
for a group and the query is received for the same group.
But we need to handle it irrespective of group since the querier
election is based on interface and not group.
Trey Aspelund [Mon, 27 Jun 2022 23:20:33 +0000 (23:20 +0000)]
bgpd: always display keepalive/hold intervals
`show bgp neighbors <peer> [json]` was only displaying the configured
keepalive and holdtime intervals when they differed from the default
values. Since default config is still config, let's make sure these
values are always displayed.
Donald Sharp [Mon, 27 Jun 2022 19:30:55 +0000 (15:30 -0400)]
zebra: Add ability for netconf dplane to handle global values
Add the ability for the netconf dplane code to handle
the global NETCONFA_IFINDEX_DEFAULT and NETCONF_IFINDEX_ALL
values. Then store our interested values when we get
them from the kernel as well as being able to display
them to the end operator.
lynnemorrison [Mon, 6 Jun 2022 23:40:17 +0000 (19:40 -0400)]
bfdd: add IPv4 BFD Echo support that matches RFC
Modify the existing BFD Echo code to send an Echo message that will
be looped in the peers forwarding plane. The existing Echo code
only works with other FRR implementations because the Echo packet
must go up to BFD to be turned around and forwarded back to the
local router. The new BFD Echo code sets the src/dst IP of the
packet to be the local router's IP and sets the dest MAC to be the
peers MAC address. The peer receives the packet and because it
is not it's IP address it forwards it back to the local router.
configure, zebra: include DPDK headers and shared libs in the dp-dpdk build
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
-> Moved new capabilities needed to under HAVE_DPDK Signed-off-by: Anuradha Karuppiah <anuradhak@nvidia.com>
zebra: expand pbr rule action for dataplane programming
PBR rules are installed as match, action rules in most dataplanes. This
requires the action to be resolved via a GW. And the GW to be subsequently
resolved to {SMAC, DMAC}.
zebra: add support for maintaining local neigh entries
Currently specific local neighbors (attached to SVIs) are maintatined
in an EVPN specific database. There is a need to maintain L3 neighbors
for other purposes including MAC resolution for PBR nexthops.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Cleanup compile and fix crash Signed-off-by: Anuradha Karuppiah <anuradhak@nvidia.com>
G. Paul Ziemba [Fri, 20 May 2022 16:26:56 +0000 (09:26 -0700)]
toptests/isis_sr_te_topo1: test out-of-order route/route-map changes
A SR policy matches a BGP nexthop based on the IP address of
the nexthop and the color of the route (color may be assigned
to routes using a route-map).
The order of events (BGP route arrival, route-map definition,
policy and candidate-path definition) should not affect the
matching/mapping.
These changes add tests for:
- removing/adding BGP route after policy and routemap are
defined and held constant
- changing route map color to be different from policy color,
and then changing back to match
after each change, the policy should be observed to be in effect
unchanged from before, i.e., the route's nexthops should reflect
the matching SR policy.
Sarita Patra [Fri, 24 Jun 2022 14:48:03 +0000 (07:48 -0700)]
pimd: fix pim interface deletion flow
Deletion of pim interface(pim_if_delete) should
do the below things before cleanup.
1. Send a hello message with zero hold time.
2. Delete all the neighbors.
3. Close the pim socket.
projects / matthieu / frr.git / log