rootcanal: Add link_layer_packets_rs.

Bug: 402294843

Author: jacky8hyf

base/cvd/MODULE.bazel

@@ -89,6 +89,7 @@ git_override(
         "@//build_external/rootcanal:0001-Use-our-local_repository.patch",
         "@//build_external/rootcanal:0002-Use-pdlc-from-pdl-compiler-crate.patch",
         "@//build_external/rootcanal:0003-Make-rootcanal_proto-public.patch",
+        "@//build_external/rootcanal:0004-Add-link_layer_packets_rs.patch",
     ],
 )
 

base/cvd/build_external/rootcanal/0001-Use-our-local_repository.patch

@@ -1,7 +1,7 @@
 From a17bc08456664b526fb3cb6da80a6f75a0fd8a70 Mon Sep 17 00:00:00 2001
 From: HONG Yifan <elsk@google.com>
 Date: Fri, 18 Jul 2025 22:58:54 +0000
-Subject: [PATCH 1/3] Use our local_repository.
+Subject: [PATCH 1/4] Use our local_repository.
 
 https://github.com/bazelbuild/bazel/issues/26578
 ---
@@ -24,5 +24,5 @@ index c888365..2d203d4 100644
  new_local_repository(
      name = "fmtlib",
 -- 
-2.50.1.552.g942d659e1b-goog
+2.51.0.rc1.163.g2494970778-goog
 

base/cvd/build_external/rootcanal/0002-Use-pdlc-from-pdl-compiler-crate.patch

@@ -1,7 +1,7 @@
 From 86ccd4891af81c6e6b4a572d9eee04fb8a8590b9 Mon Sep 17 00:00:00 2001
 From: HONG Yifan <elsk@google.com>
 Date: Fri, 18 Jul 2025 23:19:24 +0000
-Subject: [PATCH 2/3] Use pdlc from pdl-compiler crate.
+Subject: [PATCH 2/4] Use pdlc from pdl-compiler crate.
 
 pdlc might not be installed on the host system.
 ---
@@ -93,5 +93,5 @@ index 58285d6..14d1db5 100644
 
  run_binary(
 -- 
-2.50.1.552.g942d659e1b-goog
+2.51.0.rc1.163.g2494970778-goog
 

base/cvd/build_external/rootcanal/0003-Make-rootcanal_proto-public.patch

@@ -1,7 +1,7 @@
 From 45a57e95175e6a6a0cc1994355b82a2c1178b1f7 Mon Sep 17 00:00:00 2001
 From: HONG Yifan <elsk@google.com>
 Date: Thu, 31 Jul 2025 01:09:02 +0000
-Subject: [PATCH 3/3] Make rootcanal_proto public.
+Subject: [PATCH 3/4] Make rootcanal_proto public.
 
 Used by netsim.
 ---
@@ -21,5 +21,5 @@ index 93ab013..f4a3aeb 100644
 
  cc_proto_library(
 -- 
-2.50.1.552.g942d659e1b-goog
+2.51.0.rc1.163.g2494970778-goog
 

base/cvd/build_external/rootcanal/0004-Add-link_layer_packets_rs.patch

@@ -0,0 +1,37 @@
+From b9d49fae3b1f3a011de9591b03559d23eb9e18cc Mon Sep 17 00:00:00 2001
+From: HONG Yifan <elsk@google.com>
+Date: Fri, 15 Aug 2025 22:32:07 +0000
+Subject: [PATCH 4/4] Add link_layer_packets_rs.
+
+Unlike in Android.bp, we use rust_legacy here to match other pdl
+files, and to also create the *Builder classes.
+
+Bug: b/402294843
+---
+ packets/BUILD | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/packets/BUILD b/packets/BUILD
+index 14d1db5..10d4c74 100644
+--- a/packets/BUILD
++++ b/packets/BUILD
+@@ -29,6 +29,15 @@ genrule(
+     tools = ["@crates//:pdl-compiler__pdlc"],
+ )
+
++genrule(
++    name = "link_layer_packets_rs",
++    cmd = "$(execpath @crates//:pdl-compiler__pdlc) --output-format rust_legacy $(location link_layer_packets.pdl) > $(location link_layer_packets.rs)",
++    outs = ["link_layer_packets.rs"],
++    srcs = ["link_layer_packets.pdl"],
++    tools = ["@crates//:pdl-compiler__pdlc"],
++    visibility = ["//visibility:public"],
++)
++
+ run_binary(
+     name = "hci_packets_h",
+     args = [
+--
+2.51.0.rc1.163.g2494970778-goog
+
+