Use const with some args to ipaddr, zebra vxlan, mpls
lsp, and nexthop apis; add some extra checks to some
nexthop-related apis.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
RCA:
when client is killed, show running-config command crashes vtysh.
vtysh_client_config function temporarily makes vty->of which is standard output file
pointer to null inorder to suppress output to user.
This call further tries to communicate with each client and when the client
is terminated, socket call fails and hits the exception path to print the
connection has failed using vty_out.
vty_out crashes because vtysh_client_config has temporarily made vty->of
pointer to NULL to supress o/p to user.
Fix:
vty_out function should check for the sanity of vty->of pointer.
If it doesn't exist, this must have hit exception path, so use the
vty->saved_of if exists.
Signed-off-by: Saravanan K <saravanank@vmware.com>
The old version was creating a multi-line log message, which we can't
properly handle right now.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Adapt the zebra route map code to use the transaction CLI output (e.g.
the CLI show callbacks) instead of the fallback compatibility.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Modify code to use lookup function agg_node_get_prefix()
as the abstraction layer. When we rework bgp_node to
bgp_dest this will allow us to greatly limit the amount
of work needed to do that.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Zebra is currently sending messages on interface add/delete/update,
VRF add/delete, and interface address change - regardless of whether
its clients had requested them. This is problematic for lde and isis,
which only listens to label chunk messages, and only when it is
waiting for one (synchronous client). The effect is the that messages
accumulate on the lde synchronous message queue.
With this change:
- Zebra does not send unsolicited messages to synchronous clients.
- Synchronous clients send a ZEBRA_HELLO to zebra.
The ZEBRA_HELLO contains a new boolean field: sychronous.
- LDP and PIM have been updated to send a ZEBRA_HELLO for their
synchronous clients.
Signed-off-by: Karen Schoener <karen@voltanet.io>
More second order effects of cleaning up rn usage
in bgp. Sprinkle the fairy const's all over the place.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Tell the compiler that the prefix is being used for lookups
and it will never change.
Setup for future work.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
GCC 10 thinks we memcpy into a 0-sized array (which we're not).
Use a C99 flexible array member instead.
Fixes:
CC lib/stream.lo
lib/stream.c: In function ‘stream_put_in_addr’:
lib/stream.c:824:2: warning: writing 4 bytes into a region of size 0 [-Wstringop-overflow=]
824 | memcpy(s->data + s->endp, addr, sizeof(uint32_t));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
isisd/isis_tlvs.c: In function ‘auth_validator_hmac_md5’:
isisd/isis_tlvs.c:4279:2: warning: writing 16 bytes into a region of size 0 [-Wstringop-overflow=]
4279 | memcpy(STREAM_DATA(stream) + auth->offset, auth->value, 16);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function ‘update_auth_hmac_md5’,
inlined from ‘update_auth’ at isisd/isis_tlvs.c:3734:4,
inlined from ‘isis_pack_tlvs’ at isisd/isis_tlvs.c:3897:2:
isisd/isis_tlvs.c:3722:2: warning: writing 16 bytes into a region of size 0 [-Wstringop-overflow=]
3722 | memcpy(STREAM_DATA(s) + auth->offset, digest, 16);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
isisd/isis_tlvs.c:3722:2: warning: writing 16 bytes into a region of size 0 [-Wstringop-overflow=]
Signed-off-by: Ruben Kerkhof <ruben@rubenkerkhof.com>
Add a common api that formats a time interval into a string
with different output for short and longer intervals. We do
this in several places, for cli/ui output.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
This patch does two things:
1) Ensure the decoding of stream data between pim <-> zebra is properly
decoded and we don't read beyond the end of the stream.
2) In zebra when we are freeing memory alloced ensure that we
actually have memory to delete before we do so.
Ticket: CM-27055
Signed-off-by: Satheesh Kumar K <sathk@cumulusnetworks.com>
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
It's been a year search and destroy.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
vtysh should handle going back up one level to try the command, there is
no need to be able to recurse inside route-map.
This also fixes a problem with northbound hitting the XPath queue limit
of 8 nodes.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Use better TAILQ free idiom to avoid coverity scan warnings. This fixes
the coverity scan issue 1491240 .
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
* This commit implements the code style suggestions from Polychaeta.
* This commit also introduces a CLI to toggle the optimization and, a hidden
CLI to display the contents of the constructed prefix tree.
Signed-off-by: NaveenThanikachalam <nthanikachal@vmware.com>
This commit introduces the logic that computes the best-match route-map index
for a given prefix.
Signed-off-by: NaveenThanikachalam <nthanikachal@vmware.com>
* This commit introduces the building blocks.
A per-route-map prefix tree is introduced.
This tree will consist of the prefixes defined within the prefix-lists
that are added to the match clause of that route-map.
Signed-off-by: NaveenThanikachalam <nthanikachal@vmware.com>
The `--enable-pcreposix` configure option was not actually compiling
properly. Follow pre-existing pattern for inclusion of regex.h
or the pcreposix.h header.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Use the zapi_nexthop struct with the mpls_labels
zapi messages instead of the special-purpose (and
more limited) nexthop struct that was being used.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
This string is used in some logging for e.g. in zclient_read -
>>>>>>>>>>>>>>>>>>>>>>>>>>
if (zclient_debug)
zlog_debug("zclient 0x%p command %s VRF %u",
(void *)zclient, zserv_command_string(command),
vrf_id);
>>>>>>>>>>>>>>>>>>>>>>>>>>
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Add some additional output/debug to code to allow
us to see the vrf name instead of just the vrf id.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Add a quick macro to allow for safe dereference of the vrf
since it may or may not exist in all cases.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
A route where ESI, GW IP, MAC and Label are all zero at the same time SHOULD
be treat-as-withdraw.
Invalid MAC addresses are broadcast or multicast MAC addresses. The route
MUST be treat-as-withdraw in case of an invalid MAC address.
As FRR support Ethernet NVO Tunnels only.
Route will be withdrawn when ESI, GW IP and MAC are zero or Invalid MAC
Test cases:
1) ET-5 route with valid RMAC extended community
2) ET-5 route no RMAC extended community
3) ET-5 route with Multicast MAC in RMAC extended community
4) ET-5 route with Broadcast MAC in RMAC extended community
Signed-off-by: Kishore Aramalla <karamalla@vmware.com>
Copy the fix made in 'lib/if.c' to 'lib/routemap_northbound.c' so we can
have a working YANG model when compiled with GCC version less than 5.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Keep a list of hook contexts used by northbound so we don't lose the
pointer when free()ing the route map index entry data.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Allow old CLI users to still print their configuration without migrating
to northbound.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Two fixes here:
* Don't attempt to use `vty` pointer in vty;
* When `vty` is unavailable output to log;
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
This fixes a warning on daemons that use route map about filter yang
model not being included in the binary.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Based on the route map old CLI, implement the route map handling using
the exported functions.
Use a curry-like programming pattern avoid code repetition when
destroying match/set entries. This is needed by other daemons that
implement custom route map functions and need to pass to lib their
specific destroy functions.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
The agentx.c code was calling fcntl but not testing return
code and handling it, thus making SA unhappy.
Fix.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
For Graceful restart clients have to send GR capabilities
library functions are added to encode capabilities and
also for zebra to decode client capabilities.
Co-authored-by: Santosh P K <sapk@vmware.com>
Co-authored-by: Soman K S <somanks@vmware.com>
Signed-off-by: Santosh P K <sapk@vmware.com>
These changes are for Zebra lib in order to supportGraceful Restart
feature. These changes are addedtemporarily, until Zebra Graceful
Restart lib Pr is merged.
Signed-off-by: Biswajit Sadhu <sadhub@vmware.com>
Signed-off-by: Soman K S <somanks@vmware.com>
* Added FSM for peer and global configuration for graceful restart
* Added debug option BGP_GRACEFUL_RESTART for logs specific to
graceful restart processing
Signed-off-by: Biswajit Sadhu <sadhub@vmware.com>
Commit
68a02e06e5 broke nexthop encoding
for nexthop tracking.
This code combined the different types of nexthop encoding
being done in the zapi protocol. What was missed that
resolved nexthops of type NEXTHOP_TYPE_IPV4|6 have an ifindex
value that was not being reported. This commit ensures
that we always send this data( even if it is 0).
The following test commit will ensure that this stays working
as is expected by an upper level protocol.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This script was written back when `git describe` would abbreviate to
7-char commit IDs; they're longer now and we're grabbing the tail
end...
Signed-off-by: David Lamparter <equinox@diac24.net>
If someone tries to add a nexthop with a list of nexthops
already attached to it, let's just assert. This standardizes
the API to say we assume this is an individual nexthop
you are appending to a group.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Make the nexthop_copy/nexthop_dup APIs more consistent by
adding a secondary, non-recursive, version of them. Before,
it was inconsistent whether the APIs were expected to copy
recursive info or not. Make it clear now that the default is
recursive info is copied unless the _no_recurse() version is
called. These APIs are not heavily used so it is fine to
change them for now.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
bgpd already supports BGP Prefix-SID path attribute and
there are some sub-types of Prefix-SID path attribute.
This commits makes bgpd to support additional sub-types.
sub-Type-4 and sub-Type-5 for construct the VPNv4 SRv6 backend
with vpnv4-unicast address family.
This path attributes is already supported by Ciscos IOS-XR and NX-OS.
Prefix-SID sub-Type-4 and sub-Type-5 is defined on following
IETF-drafts.
Supports(A-part-of):
- https://tools.ietf.org/html/draft-dawra-idr-srv6-vpn-04
- https://tools.ietf.org/html/draft-dawra-idr-srv6-vpn-05
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
Add error handling for top level failures (not able to
execute command, unable to find vrf for command, etc.)
With this error handling we add a new zapi message type
of ZEBRA_ERROR used when we are unable to properly handle
a zapi command and pass it down into the lower level code.
In the event of this, we reply with a message of type
enum zebra_error_types containing the error type.
The sent packet will look like so:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | Marker | Version |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| VRF ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Command |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ERROR TYPE |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Also add appropriate hooks for clients to subscribe to for
handling these types of errors.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
If someone provides us more nexthops than our configured multipath
setting, drop the rest of them
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
Commit 1b3e9a21dd removed the global visibility of the yang_modules
variable, breaking the build of all northbound plugins. Revert a
small part of that commit to fix this issue.
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
Default all nexthop weights to one. The linux kernel does
some weird stuff where it adds one to all nexthop weight values
it gets. So, we added df7fb5800b with
some special subtracing/adding to account for this. Though, that patch
did not account for the default case of the weight being zero for
elements in the group.
Hence, this patch defaults the nexthop weight to one during creation.
This should be a valid value on all platforms anyway so shouldn't
affect anything.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
The whole lib/linklist.c code shouldn't really be used for new code (the
lib/typesafe.h bits are better.) So, a new need for these unused
functions shouldn't be coming up.
Signed-off-by: David Lamparter <equinox@diac24.net>
Sometimes the easiest solution is hardest to find... the whole point of
all this "static const", aliasing, & co. was to make "MTYPE_FOO" usable
without adding the extra & as in "&MTYPE_FOO". Making it a size-1 array
does that perfectly through the magic of ISO C array decay...
Signed-off-by: David Lamparter <equinox@diac24.net>
To keep the calling code agnostic of the DNS resolver libary used, pass
a strerror-style string instead of a status code that would need extra
handling.
Signed-off-by: David Lamparter <equinox@diac24.net>
libc-ares doesn't do IP literals, so we have to do that before running
off to do DNS. Since this isn't BMP specific, move to lib/ so NHRP can
benefit too.
Signed-off-by: David Lamparter <equinox@diac24.net>
Under some circumstances (apparently depends on several optimization
flags), gcc-9 throws an used-uninitialized warning for this variable in
the skiplist code. Just initialize to NULL.
Signed-off-by: David Lamparter <equinox@diac24.net>
Add an api that creates a copy of a list of nexthops and
enforces the canonical sort ordering; consolidate some nhg
code to avoid copy-and-paste. The zebra dplane uses
that api when a plugin sets up a list of nexthops, ensuring
that the plugin's list is ordered when it's processed in
zebra.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Add the ability to read in the weight of a nexthop and store/handle
it appropriately
nexthop-group BLUE
nexthop 192.168.201.44 weight 33
nexthop 192.168.201.45 weight 66
nexthop 192.168.201.46 weight 99
Is appropriately read in and handled as appropriate.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Linux has the idea of allowing a weight to be sent
down as part of a nexthop group to allow the kernel
to weight particular nexthop paths a bit more or less
than others.
See:
http://tldp.org/HOWTO/Adv-Routing-HOWTO/lartc.rpdb.multiple-links.html
Allow for installation into the kernel using the weight attribute
associated with the nexthop.
This code is foundational in that it just sets up the ability
to do this, we do not use it yet. Further commits will
allow for the pass through of this data from upper level protocols.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
