RootCanal: Generate the rust backend for link_layer_packets.pdl

Used by netsimd to generate the beacon advertising
events for beacon devices.

Bug: 289385842
Test: m netsimd
Change-Id: I990aca3b0f55c7bad05abdfd1a92fae3e5ee60e5

tools/rootcanal/Android.bp

@@ -448,6 +448,13 @@ genrule {
     ],
 }
 
+genrule {
+    name: "rootcanal_link_layer_packets_rust_gen",
+    defaults: ["pdl_rust_generator_defaults"],
+    srcs: ["packets/link_layer_packets.pdl"],
+    out: ["link_layer_packets.rs"],
+}
+
 genrule {
     name: "rootcanal_bredr_bb_packets_cxx_gen",
     tools: [

tools/rootcanal/CMakeLists.txt

@@ -51,7 +51,7 @@ function(pdl_gen)
   get_filename_component(pdl_INPUT_ABSOLUTE ${pdl_INPUT} ABSOLUTE)
   get_filename_component(pdl_OUTPUT_ABSOLUTE ${pdl_OUTPUT} ABSOLUTE)
   get_filename_component(pdl_OUTPUT_DIR ${pdl_OUTPUT_ABSOLUTE} DIRECTORY)
-  set(${pdl_NAME} "${pdl_OUTPUT_ABSOLUTE}" PARENT_SCOPE)
+  set(${pdl_NAME} "${pdl_OUTPUT_ABSOLUTE}" CACHE STRING "PDL output filepath for ${pdl_NAME}" FORCE)
 
   file(MAKE_DIRECTORY ${pdl_OUTPUT_DIR})
 
@@ -105,6 +105,8 @@ function(pdl_gen)
         VERBATIM
         DEPENDS pdlc ${pdl_OUTPUT_ABSOLUTE}.json)
   endif()
+
+  add_custom_target("pdl_gen-${pdl_NAME}" DEPENDS ${pdl_OUTPUT_ABSOLUTE})
 endfunction()
 
 pdl_gen(
@@ -124,6 +126,12 @@ pdl_gen(
   INCLUDE "hci/address.h"
   USING "bluetooth::hci")
 
+pdl_gen(
+  NAME RootCanalGeneratedPackets_rs
+  INPUT ${ROOTCANAL_ROOT}/packets/link_layer_packets.pdl
+  OUTPUT link_layer_packets.rs
+  LANG rust)
+
 android_add_library(
   TARGET libscriptedbeaconpayload-protos-lite LICENSE Apache-2.0
   SOURCE_DIR ${ROOTCANAL_ROOT} SRC ${libscriptedbeaconpayload_protos_lite_src})