diff options
| -rwxr-xr-x | meta-google/recipes-google/ncsi/files/gbmc-ncsi-ip-from-ra.sh.in | 136 |
1 files changed, 73 insertions, 63 deletions
diff --git a/meta-google/recipes-google/ncsi/files/gbmc-ncsi-ip-from-ra.sh.in b/meta-google/recipes-google/ncsi/files/gbmc-ncsi-ip-from-ra.sh.in index 7ba159fcf..80bd34f04 100755 --- a/meta-google/recipes-google/ncsi/files/gbmc-ncsi-ip-from-ra.sh.in +++ b/meta-google/recipes-google/ncsi/files/gbmc-ncsi-ip-from-ra.sh.in @@ -16,41 +16,36 @@ source /usr/share/network/lib.sh || exit source /usr/libexec/ncsid_lib.sh || exit +NCSI_IF='@NCSI_IF@' + old_pfx= +old_fqdn= old_rtr= -w=60 -while true; do - start=$SECONDS - while read line; do - if [ -z "$line" ]; then - pfx= - host= - elif [[ "$line" =~ ^Prefix' '*:' '*(.*)/([0-9]+)$ ]]; then - t_pfx="${BASH_REMATCH[1]}" - t_pfx_len="${BASH_REMATCH[2]}" - ip_to_bytes t_pfx_b "$t_pfx" || continue - (( t_pfx_len == 76 && t_pfx_b[8] & 0xfd == 0xfd )) || continue - (( t_pfx_b[9] |= 1 )) - hextet="fd$(printf '%02x' ${t_pfx_b[9]})" - pfx="$(ip_bytes_to_str t_pfx_b)" - (( t_pfx_b[9] &= 0xf0 )) - stateless_pfx="$(ip_bytes_to_str t_pfx_b)" - elif [[ "$line" =~ ^'DNS search list'' '*:' '*([^.-]*)[^.]*[.](.*.google.com)$ ]]; then - host="${BASH_REMATCH[1]}" - domain="${BASH_REMATCH[2]}" - elif [[ "$line" =~ ^from' '(.*)$ ]]; then - rtr="${BASH_REMATCH[1]}" - (( "${#pfx}" != 0 )) || continue - [[ "$pfx" != "$old_pfx" || "$old_rtr" != "$rtr" ]] || continue +set_host() { + [ -n "$host" -a -n "$domain" -a -n "$hextet" ] || return + + local fqdn="$host-n$hextet.$domain" + [ "$fqdn" != "$old_fqdn" ] || return + old_fqdn="$fqdn" + + echo "Found hostname $fqdn" >&2 + hostnamectl set-hostname "$fqdn" || true +} - echo "Found prefix $pfx from $rtr" >&2 +set_net() { + [ -n "$pfx" -a -n "$rtr" ] || return + [[ "$pfx" != "$old_pfx" || "$rtr" != "$old_rtr" ]] || return + old_pfx="$pfx" + old_rtr="$rtr" - # Delete any stale IP Addresses from the primary interface as we won't use them - UpdateIP xyz.openbmc_project.Network @NCSI_IF@ '0.0.0.0' '0' - UpdateIP xyz.openbmc_project.Network @NCSI_IF@ '::' '0' + echo "Found prefix $pfx from $rtr" >&2 - read -r -d '' contents <<EOF + # Delete any stale IP Addresses from the primary interface as we won't use them + UpdateIP xyz.openbmc_project.Network "$NCSI_IF" '0.0.0.0' '0' || true + UpdateIP xyz.openbmc_project.Network "$NCSI_IF" '::' '0' || true + + read -r -d '' contents <<EOF [Network] Address=$pfx/128 IPv6PrefixDelegation=yes @@ -68,30 +63,26 @@ Destination=$stateless_pfx/76 Type=unreachable Metric=1024 EOF - for file in /run/systemd/network/{00,}-bmc-gbmcbr.network.d/49-public-ra.conf; do - mkdir -p -m 755 "$(dirname "$file")" - printf '%s' "$contents" >"$file" - done - - contents='[Network]'$'\n' - contents+="Address=$pfx/128"$'\n' - contents+="Gateway=$rtr"$'\n' - for file in /run/systemd/network/{00,}-bmc-@NCSI_IF@.network.d/49-public-ra.conf; do - mkdir -p -m 755 "$(dirname "$file")" - printf '%s' "$contents" >"$file" - done + for file in /run/systemd/network/{00,}-bmc-gbmcbr.network.d/49-public-ra.conf; do + mkdir -p -m 755 "$(dirname "$file")" + printf '%s' "$contents" >"$file" + done + touch -c /lib/systemd/network/*-bmc-gbmcbr.network || true - # Ensure that systemd-networkd performs a reconfiguration as it doesn't - # currently check the mtime of drop-in files. - touch -c /lib/systemd/network/*-bmc-gbmcbr.network - touch -c /etc/systemd/network/*-bmc-@NCSI_IF@.network + contents='[Network]'$'\n' + contents+="Address=$pfx/128"$'\n' + contents+="Gateway=$rtr"$'\n' + for file in /run/systemd/network/{00,}-bmc-"$NCSI_IF".network.d/49-public-ra.conf; do + mkdir -p -m 755 "$(dirname "$file")" + printf '%s' "$contents" >"$file" + done + touch -c /etc/systemd/network/*-bmc-"$NCSI_IF".network || true - if [ "$(systemctl is-active systemd-networkd)" != 'inactive' ]; then - networkctl reload - networkctl reconfigure gbmcbr - fi + if [ "$(systemctl is-active systemd-networkd)" != 'inactive' ]; then + networkctl reload && networkctl reconfigure gbmcbr "$NCSI_IF" || true + fi - read -r -d '' contents <<EOF + read -r -d '' contents <<EOF table inet filter { chain ncsi_input { ip6 saddr != $pfx/76 ip6 daddr $pfx/76 goto ncsi_gbmc_br_pub_input @@ -101,21 +92,40 @@ table inet filter { } } EOF - rfile=/run/nftables/40-gbmc-ncsi-ra.rules - mkdir -p -m 755 "$(dirname "$rfile")" - printf '%s' "$contents" >"$rfile" - systemctl reset-failed nftables - systemctl --no-block restart nftables - - # Set the machine hostname if discovered - if [ -n "$host" ]; then - hostnamectl set-hostname "$host-n$hextet.$domain" - fi + rfile=/run/nftables/40-gbmc-ncsi-ra.rules + mkdir -p -m 755 "$(dirname "$rfile")" + printf '%s' "$contents" >"$rfile" + systemctl reset-failed nftables && systemctl --no-block restart nftables || true +} - old_pfx="$pfx" - old_rtr="$rtr" +w=60 +while true; do + start=$SECONDS + while read line; do + if [ -z "$line" ]; then + hextet= + pfx= + host= + domain= + elif [[ "$line" =~ ^Prefix' '*:' '*(.*)/([0-9]+)$ ]]; then + t_pfx="${BASH_REMATCH[1]}" + t_pfx_len="${BASH_REMATCH[2]}" + ip_to_bytes t_pfx_b "$t_pfx" || continue + (( t_pfx_len == 76 && t_pfx_b[8] & 0xfd == 0xfd )) || continue + (( t_pfx_b[9] |= 1 )) + hextet="fd$(printf '%02x' ${t_pfx_b[9]})" + pfx="$(ip_bytes_to_str t_pfx_b)" + (( t_pfx_b[9] &= 0xf0 )) + stateless_pfx="$(ip_bytes_to_str t_pfx_b)" + elif [[ "$line" =~ ^'DNS search list'' '*:' '*([^.-]*)[^.]*[.](.*.google.com)$ ]]; then + host="${BASH_REMATCH[1]}" + domain="${BASH_REMATCH[2]}" + elif [[ "$line" =~ ^from' '(.*)$ ]]; then + rtr="${BASH_REMATCH[1]}" + set_net || true + set_host || true fi - done < <(rdisc6 -d -m @NCSI_IF@ -w $(( w * 1000 )) 2>/dev/null) + done < <(rdisc6 -d -m "$NCSI_IF" -w $(( w * 1000 )) 2>/dev/null) # If rdisc6 exits early we still want to wait the full `w` time before # starting again. (( timeout = start + w - SECONDS )) |