meta-google: gbmc-bridge: Implement DHCP

This makes it possible for a BMC to acquire a public address via DHCP
provisioning.

None of the update processes are included yet.

Change-Id: I51ca2aa4859bcd2b9e909dd5a0d9e66cfbd648af
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-google/ncsi/gbmc-ncsi-config.bb b/meta-google/recipes-google/ncsi/gbmc-ncsi-config.bb
index 0074a31..6e25824 100644
--- a/meta-google/recipes-google/ncsi/gbmc-ncsi-config.bb
+++ b/meta-google/recipes-google/ncsi/gbmc-ncsi-config.bb
@@ -20,6 +20,7 @@
   file://gbmc-ncsi-br-pub-addr.sh.in \
   file://gbmc-ncsi-br-deprecated-ips.sh.in \
   file://gbmc-ncsi-set-nicenabled.service.in \
+  file://gbmc-ncsi-clear-ip.sh.in \
   "
 
 S = "${WORKDIR}"
@@ -36,6 +37,7 @@
   "
 
 FILES:${PN} += " \
+  ${datadir}/gbmc-br-dhcp \
   ${datadir}/gbmc-ip-monitor \
   ${systemd_unitdir} \
   "
@@ -105,6 +107,12 @@
     >${WORKDIR}/gbmc-ncsi-br-deprecated-ips.sh
   install -m644 ${WORKDIR}/gbmc-ncsi-br-deprecated-ips.sh $mondir
 
+  dhcpdir=${D}${datadir}/gbmc-br-dhcp/
+  install -d -m0755 $dhcpdir
+  sed "s,@NCSI_IF@,$if_name,g" ${WORKDIR}/gbmc-ncsi-clear-ip.sh.in \
+    >${WORKDIR}/gbmc-ncsi-clear-ip.sh
+  install -m644 ${WORKDIR}/gbmc-ncsi-clear-ip.sh $dhcpdir
+
   sed "s,@NCSI_IF@,$if_name,g" ${WORKDIR}/gbmc-ncsi-set-nicenabled.service.in \
     >${D}${systemd_system_unitdir}/gbmc-ncsi-set-nicenabled.service