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*: convert to SPDX License identifiers
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Add a function nexthop_group_has_label() for determining
if even a single nexthop in the group has a label on it.
Signed-off-by: Stephen Worley <sworley@nvidia.com>
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Done with a combination of regex'ing and banging my head against a wall.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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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.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
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Add ability to read the nexthop group resilient linux
kernel data as well as write it.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
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Again, see previous commits.
Signed-off-by: David Lamparter <equinox@diac24.net>
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The nexthop_group_write_nexthop_simple function outputs the
interface name, because we've stored the ifindex. The problem
is that there are ephermeal interfaces in linux that can be
destroyed/recreated. Allow us to keep that data and do something
a bit smarter to allow show run's and other show commands to continue
to work when the interface is deleted.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Not everything cares about the vrf and backup info. Break
up the API to add a simple version to just write gateway/interface
info.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Revise the nexthop-group cli to support multiple backups for
a single primary nexthop.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
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Signed-off-by: Wesley Coakley <wcoakley@cumulusnetworks.com>
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Add vty support for backup nexthops in nexthop groups. Capture
backup nexthop info in zapi route messages.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
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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>
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Add some const to the nhg copy api.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
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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>
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lib: support labelled nexthops in nexthop_groups
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Replace the existing list of nexthops (via a nexthop_group
struct) in the route_entry with a direct pointer to zebra's
new shared group (from zebra_nhg.h). This allows more
direct access to that shared group and the info it carries.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
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Add support for labelled nexthops in nexthop-group
vtysh configuration. Also update the PBR doc where
the cli is described.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
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Reduce the api for deleting nexthops and the containing
group to just one call rather than having a special case
and handling it separately.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Separate nexthop_group_equal() into two versions. One
that compares verses recurisvely resolved nexthops and
one that doesn't.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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We were waiting until install time to mark nexthops as duplicate.
Since they are immutable now and re-used, move this marking into
when they are actually created to save a bunch of cycles.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Include resolved nexthops when hashing a nexthop
group but provide an API that allows you to non-recursively
hash as well.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Add the ability to recursively resolve nexthop group hash entries
and resolve them when sending to the kernel.
When copying over nexthops into an NHE, copy resolved info as well.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Add a function to check whether nexthop groups
are equivalent. It does not care about ordering.
Also, set any functions that it relies on to take
const vars as well.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Refactor the depends to use an RB tree instead of a list.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Add a file that exposes functions which modify nexthop groups.
Nexthop groups are techincally immutable but there are a
few special cases where we need direct access to add/remove
nexthops after the group has been made. This file provides a
way to expose those functions in a way that makes it clear
this is a private/hidden api.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Add nexthop_group_copy and nexthop_group_add_sorted functions.
nexthop_group_copy -> Copy src nexthop_group into dst nexthop_group
nexthop_group_add_sorted -> Adds a new nexthop to the nexthop group
in a sorted manner.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Add a ability to count the number of nexthops in a nexthop_group.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Add a hash function to turn a nexthop group into a
32 bit unsigned hash key with jhash. We do not care to
hash any recursively resolved nexthops, just the group.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
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Use const for the source arg to copy_nexthops().
Signed-off-by: Mark Stapp <mjs@voltanet.io>
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Use a pointer to a sockunion instead of a full sockunion in the
nexthop_hold structure. This prepares the ground for the next commit,
which will make nexthop addresses optional (in this commit we assume
nh->addr will never be NULL, but this will change).
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
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These are necessary to use functions defined in these headers from C++.
Signed-off-by: David Lamparter <equinox@diac24.net>
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
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Some misc changes to resolve some c++ compilation errors.
The goal is only to permit an external module - a plugin,
for example - to see frr headers, not to support or encourage
contributions in c++. The changes include: avoiding use
of keywords like 'new', 'delete'; cleaning up implicit
type-casting from 'void *' in several places.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
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Because sometimes we have a pointer to a nexthop_group.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
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Properly notice when we get if up/down and vrf enable/disable
events and attempt to properly install nexthops as they
come in.
Ticket: CM20489
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Store Nexthop's as the incoming raw data. This will allow
us to separate the act of inputting the cli from the
act of instantiating the cli.
Ticket: CM-20489
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Add code to allow nexthops to be written by people who are
interested in writing their own nexthop line.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Expose to the world the nhgc_find command so that
interested parties can find a stored nexthop group.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Add a nexthop-group cli:
nexthop-group NAME
nexthop A
nexthop B
nexthop C
!
This will allow interested parties to hook into the cli for
nexthops. Users can add callback functions for add/delete
of a nexthop group as well as add/delete of each individual
nexthop.
Future work( PBR and static routes ) will take advantage
of this.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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Also modify `struct route_entry` to use nexthop_groups.
Move ALL_NEXTHOPS loop to nexthop_group.h
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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