subprojects/ncsid/src/update_ra_neighbor.sh

#!/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

function UpdateRA() {
    local netdev="$1"

    local service='xyz.openbmc_project.Network'
    local gateways
    if ! gateways="$(GetGateways "$service" "$netdev")"; then
        echo "Failed to look up gateways" >&2
        return 1
    fi
    local vars
    vars="$(echo "$gateways" | JSONToVars)" || return
    eval "$vars" || return

    echo "GW($netdev): ${DefaultGateway6:-(none)}" >&2
    if [ -z "$DefaultGateway6" ]; then
        return 0
    fi

    local st=0
    local disc
    CaptureInterruptible disc DiscoverRouter6 "$netdev" -1 360000 "$DefaultGateway6" || st=$?
    if (( st != 0 )); then
        echo "Failed to discover router" >&2
        return 1
    fi
    local vars
    vars="$(echo "$disc" | JSONToVars)" || return
    eval "$vars" || return
    echo "GW($netdev) MAC: $router_mac" >&2

    SuppressTerm
    local rc=0
    UpdateNeighbor "$service" "$netdev" "$router_ip" "$router_mac" || rc=$?
    UnsuppressTerm
    return $rc
}

function Main() {
    set -o nounset
    set -o errexit
    set -o pipefail

    InitTerm
    UpdateRA "$@"
}

return 0 2>/dev/null
Main "$@"