zebra/netconf_netlink.c: In function 'netlink_netconf_change':
zebra/netconf_netlink.c:109:32: error: 'AF_MPLS' undeclared (first use in this function)
109 | if (ncm->ncm_family == AF_MPLS)
| ^~~~~~~
ospf6d: Show if the interface is passive for `show ipv6 ospf6 interface`
donatas-pc# sh ipv6 ospf6 interface enp3s0
enp3s0 is up, type BROADCAST
Interface ID: 2
Internet Address:
inet : 192.168.10.17/24
inet6: fe80::ca5d:fd0d:cd8:1bb7/64
Instance ID 0, Interface MTU 1500 (autodetect: 1500)
MTU mismatch detection: enabled
Area ID 0.0.0.0, Cost 1000
State Waiting, Transmit Delay 1 sec, Priority 1
Timer intervals configured:
Hello 10(8.149), Dead 40, Retransmit 5
DR: 0.0.0.0 BDR: 0.0.0.0
Number of I/F scoped LSAs is 1
0 Pending LSAs for LSUpdate in Time 00:00:00 [thread off]
0 Pending LSAs for LSAck in Time 00:00:00 [thread off]
Authentication Trailer is disabled
donatas-pc# con
donatas-pc(config)# int enp3s0
donatas-pc(config-if)# ipv6 ospf6 passive
donatas-pc(config-if)# do sh ipv6 ospf6 interface enp3s0
enp3s0 is up, type BROADCAST
Interface ID: 2
Internet Address:
inet : 192.168.10.17/24
inet6: fe80::ca5d:fd0d:cd8:1bb7/64
Instance ID 0, Interface MTU 1500 (autodetect: 1500)
MTU mismatch detection: enabled
Area ID 0.0.0.0, Cost 1000
State Waiting, Transmit Delay 1 sec, Priority 1
Timer intervals configured:
No Hellos (Passive interface)
DR: 0.0.0.0 BDR: 0.0.0.0
Number of I/F scoped LSAs is 1
0 Pending LSAs for LSUpdate in Time 00:00:00 [thread off]
0 Pending LSAs for LSAck in Time 00:00:00 [thread off]
Authentication Trailer is disabled
donatas-pc(config-if)#
zebra: Reuse netinet/if_ether.h to avoid redefinition of struct ethhdr
In file included from /usr/include/net/ethernet.h:10,
from ./lib/prefix.h:26,
from zebra/tc_netlink.c:32:
/usr/include/netinet/if_ether.h:115:8: error: redefinition of 'struct ethhdr'
115 | struct ethhdr {
| ^~~~~~
In file included from zebra/tc_netlink.c:28:
/usr/include/linux/if_ether.h:169:8: note: originally defined here
169 | struct ethhdr {
| ^~~~~~
Donald Sharp [Mon, 24 Oct 2022 13:25:54 +0000 (09:25 -0400)]
*: Add ability for daemons to notice resilience changes
This patch just introduces the callback mechanism for the
resilient nexthop changes so that upper level daemons
can take advantage of the change. This does nothing
at this point but just call some code.
Donald Sharp [Mon, 24 Oct 2022 18:08:35 +0000 (14:08 -0400)]
lib: When adding to front of list ensure we handle tail to
When inserting to the front of a list with listnode_add_head
if the list is empty, the tail will not be properly set and
subsuquent calls to insert/remove will cause the function
to crash.
Donald Sharp [Tue, 1 Nov 2022 12:00:14 +0000 (08:00 -0400)]
lib, zebra: Allow for zebra to recognize that a route has gotten desynced
FRR does not use the NLM_F_APPEND semantics ( in fact I would argue that
the NLM_F_APPEND semantics just introduce pain for all parties involved )
I would also argue that most people who use the kernel netlink api
have recognized that NLM_F_APPEND for a route is a recipe for disaster
that is well documented and as such it is not used as anything other
than a curiousity by operators.
Are 2 great examples of how confusing it is for anyone in user
space to know what the correct thing to do is. Given that
new fields can be added with no semantics to allow us to know
what has resulted in a change or not.
In an attempt to recognize this, let's note that FRR
believes it has gotten out of sync with the kernel.
Future commits will react to the desynchronized route
and request from the kernel a reload of that specific
route if possible.
Donald Sharp [Fri, 4 Nov 2022 00:39:39 +0000 (20:39 -0400)]
bgpd: Limit snmp trap for backwards state movement from established
Currently the bgp mib specifies two traps:
a) Into established state
b) transition backwards from a state
b) really is an interesting case. It means transitioning
from say established to starting over. It can also
mean when bgp is trying to connect and that fails and
the state transitions backwards.
Now let's imagine 500 peers with tight timers (say a data center)
and there is network trauma you have just created an inordinately
large number of traps for each peer.
Let's limit FRR to changing from the old status as Established
to something else. This will greatly limit the trap but it
will also be something end operators are actually interested in.
I actually had several operators say they had to write special code
to ignore all the backward state transitions that they didn't care
about.
Donald Sharp [Wed, 2 Nov 2022 17:24:48 +0000 (13:24 -0400)]
bgpd: Ensure that bgp open message stream has enough data to read
If a operator receives an invalid packet that is of insufficient size
then it is possible for BGP to assert during reading of the packet
instead of gracefully resetting the connection with the peer.
anlan_cs [Mon, 31 Oct 2022 10:14:07 +0000 (06:14 -0400)]
include: remove one unused macro
In "rtnetlink.h", four items are a group, e.g. 116/117/118/119 should be
a group. But "RTM_SETHWFLAGS" is not in use and has nothing to do with
"NEXTHOPBUCKET".
After comparing with kernel header, better remove it imo.
`srv6_locator_chunk_free()` is a wrapper around the `XFREE()` macro.
Passing a NULL pointer to `XFREE()` is safe. Therefore, checking that
the pointer passed to the `srv6_locator_chunk_free()` is not null is
unnecessary.
`srv6_locator_chunk_free()` takes care of freeing the memory allocated
for a `struct srv6_locator_chunk` and setting the
`struct srv6_locator_chunk` pointer to NULL.
It is not necessary to explicitly set the pointer to NULL after invoking
`srv6_locator_chunk_free()`.
lib, bgpd: Enhance `srv6_locator_chunk_free()` API
A programmer can use the `srv6_locator_chunk_free()` function to free
the memory allocated for a `struct srv6_locator_chunk`.
The programmer invokes `srv6_locator_chunk_free()` by passing a single
pointer to the `struct srv6_locator_chunk` to be freed.
`srv6_locator_chunk_free()` uses `XFREE()` to free the memory.
It is the responsibility of the programmer to set the
`struct srv6_locator_chunk` pointer to NULL after freeing memory with
`srv6_locator_chunk_free()`.
This commit modifies the `srv6_locator_chunk_free()` function to take a
double pointer instead of a single pointer. In this way, setting the
`struct srv6_locator_chunk` pointer to NULL is no longer the
programmer's responsibility but is the responsibility of
`srv6_locator_chunk_free()`. This prevents programmers from making
mistakes such as forgetting to set the pointer to NULL after invoking
`srv6_locator_chunk_free()`.
Donald Sharp [Thu, 13 Oct 2022 19:54:43 +0000 (15:54 -0400)]
pimd: Remove pim_br vestiges
If PIM had received a register packet with the Border Router
bit set, pimd would have crashed. Since I wrote this code
in 2015 and really have pretty much no memory of this and
no-one has ever reported this crash, let's just remove this
code.
Louis Scalbert [Wed, 19 Oct 2022 12:34:43 +0000 (14:34 +0200)]
lib: fix the default TE bandwidth
When enabling the interface link-params, a default bandwidth is assigned
to the Max, Reservable and Unreserved Bandwidth variables. If the
bandwidth is set at in the interface context, this value is used.
Otherwise, a default bandwidth value of 10 Gbps is set.
Revert the default value to 10 Mbps as it was intended in the initial
commit. 10 Mbps is a low value so that the link will not be prioritized
when computing the paths.
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Donald Sharp [Thu, 27 Oct 2022 13:21:41 +0000 (09:21 -0400)]
bgpd: Clarify what NHT error message means
When waiting on a path to reach the peer, modify the debug/show
output to give a better understanding to the operator about what
they should be looking for.
Sai Gomathi N [Thu, 27 Oct 2022 09:36:00 +0000 (02:36 -0700)]
pimd: Dereference before null check
In pim_ecmp_nexthop_search: All paths that lead to this null pointer comparison already dereference the pointer earlier
There may be a null pointer dereference, or else the comparison against null is unnecessary.
Sai Gomathi N [Thu, 27 Oct 2022 08:52:31 +0000 (01:52 -0700)]
pimd: Unchecked return value
In tib_sg_oil_setup: Value returned from a function is not checked for errors before being used.
If the function returns an error value, the error value may be mistaken for a normal value.
Here, only the nexthop value is being used. So casted the return type to void.
Ryoga Saito [Thu, 27 Oct 2022 01:17:50 +0000 (10:17 +0900)]
bgpd: Fix the condition whether nexthop is changed
Given that the following topology, route server MUST not modify NEXT_HOP
attribute because route server isn't in the actual routing path. This
behavior is required to comply RFC7947
(Router A) <-(eBGP peer)-> (Route Server) <-(eBGP peer)-> (Router B)
RFC7947 says as follows:
> As the route server does not participate in the actual routing of
> traffic, the NEXT_HOP attribute MUST be passed unmodified to the route
> server clients, similar to the "third-party" next-hop
> feature described in Section 5.1.3. of [RFC4271].
However, current FRR is violating RFC7947 in some cases. If routers and
route server established BGP peer over IPv6 connection and routers
advertise ipv4-vpn routes through route server, route server will modify
NEXT_HOP attribute in these advertisements.
This is because the condition to check whether NEXT_HOP attribute should
be changed or not is wrong. We should use (afi, safi) as the key to
check, but (nhafi, safi) is actually used. This causes the RFC7947
violation.
Trey Aspelund [Wed, 26 Oct 2022 20:53:09 +0000 (20:53 +0000)]
bgpd: Check for IP-format Site-of-Origin
When deciding whether to apply "neighbor soo" filtering towards a peer,
we were only looking for SoO ecoms that use either AS or AS4 encoding.
This makes sure we also check for IPv4 encoding, since we allow a user
to configure that encoding style against the peer.
Config:
```
router bgp 1
address-family ipv4 unicast
network 100.64.0.2/32 route-map soo-foo
neighbor 192.168.122.12 soo 3.3.3.3:20
exit-address-family
!
route-map soo-foo permit 10
set extcommunity soo 3.3.3.3:20
exit
```
Before:
```
ub20# show ip bgp neighbors 192.168.122.12 advertised-routes
BGP table version is 5, local router ID is 100.64.0.222, vrf id 0
Default local pref 100, local AS 1
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
*> 2.2.2.2/32 0.0.0.0 0 100 32768 i
*> 100.64.0.2/32 0.0.0.0 0 100 32768 i
Total number of prefixes 2
```
After:
```
ub20# show ip bgp neighbors 192.168.122.12 advertised-routes
BGP table version is 5, local router ID is 100.64.0.222, vrf id 0
Default local pref 100, local AS 1
Status codes: s suppressed, d damped, h history, * valid, > best, = multipath,
i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
*> 2.2.2.2/32 0.0.0.0 0 100 32768 i
projects / mirror / frr.git / log