ncsid: Add service for discovering routers
This will be required for relaying egress traffic from the BMC network
once the static network configurations go away. Currently this will just
be redundant behavior with existing gateway discovery.
Change-Id: I26b3f040f0752b948b9c1d9a9110a975f8168f8a
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/subprojects/ncsid/src/update_ra_gw.sh b/subprojects/ncsid/src/update_ra_gw.sh
new file mode 100644
index 0000000..5ebb15a
--- /dev/null
+++ b/subprojects/ncsid/src/update_ra_gw.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+source "$(dirname "${BASH_SOURCE[0]}")"/ncsid_lib.sh
+
+UpdateRAGW() {
+ local netdev="$1"
+
+ local reqs=5
+ while true; do
+ local disc
+ if ! disc="$(RunInterruptible DiscoverRouter6 "$1" "$reqs" 360000)"; then
+ echo "Failed to discover router" >&2
+ continue
+ fi
+ # We don't want to send any requests after the initial finding
+ # Just passively listen now
+ reqs=-1
+
+ local vars
+ vars="$(echo "$disc" | JSONToVars)" || return
+ eval "$vars" || return
+ [ -n "$stateful_address" ] || continue
+ echo "GW($netdev) $router_ip MAC: $router_mac" >&2
+
+ SuppressTerm
+ local service='xyz.openbmc_project.Network'
+ local rc=0
+ UpdateGateway "$service" "$router_ip" && \
+ UpdateNeighbor "$service" "$netdev" "$router_ip" "$router_mac" || rc=$?
+ UnsuppressTerm
+ done
+}
+
+Main() {
+ set -o nounset
+ set -o errexit
+ set -o pipefail
+
+ InitTerm
+ UpdateRAGW "$@"
+}
+
+return 0 2>/dev/null
+Main "$@"