Add Bazel 8.5.0 build support for simple_switch_grpc + CI workflow

.bazelrc

@@ -0,0 +1,8 @@
+build --jobs=2
+build --local_resources=memory=4096
+build --local_resources=cpu=2
+build --sandbox_add_mount_pair=/opt/homebrew/opt/gmp
+build --sandbox_add_mount_pair=/opt/homebrew/opt/libpcap
+build --copt=-DNDEBUG
+build --cxxopt=-DNDEBUG
+build --copt=-Wno-implicit-function-declaration

.bazelversion

@@ -0,0 +1 @@
+8.5.0

.github/workflows/ci-bazel.yml

@@ -0,0 +1,35 @@
+name: Bazel CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Cache Bazel artifacts
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/bazel
+          key: bazel-${{ runner.os }}-${{ hashFiles('MODULE.bazel', '**/BUILD') }}
+          restore-keys: |
+            bazel-${{ runner.os }}-
+
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y build-essential cmake pkg-config \
+            libgmp-dev libpcap-dev libboost-all-dev
+
+      - name: Build simple_switch_grpc with Bazel
+        run: bazelisk build //targets/simple_switch_grpc:simple_switch_grpc
+
+      - name: Run unit tests with Bazel
+        run: bazelisk test //targets/simple_switch_grpc:simple_switch_grpc_test --test_output=short

.gitignore

@@ -1,106 +1,10 @@
-# Compiled Object files
-*.slo
-*.lo
-*.o
-*.obj
+# Bazel build outputs
+bazel-*
+MODULE.bazel.lock
 
-# Precompiled Headers
-*.gch
-*.pch
+# CMake build directory
+build_cmake/
 
-# Compiled Dynamic libraries
-*.so
-*.dylib
-*.dll
-
-# Fortran module files
-*.mod
-
-# Compiled Static libraries
-*.lai
-*.la
-*.a
-*.lib
-
-# Executables
-*.exe
-*.out
-*.app
-
-# Python byte code
-*.pyc
-
-build/
-lib*
-
-# Vim
-*.swp
-
-# Emacs
-*~
-
-*.pcap
-
-# Tags
-GPATH
-GRTAGS
-GSYMS
-GTAGS
-
-tools/bm_runtime/
-
-# Files generated by autotools
-.deps
-Makefile
-Makefile.in
-configure
-config.log
-config.h
-aclocal.m4
-autom4te.cache/
-compile
-/config.h.in
-config.status
-depcomp
-install-sh
-missing
-stamp-h1
-targets/simple_router/simple_router
-test-driver
-.dirstamp
-tests/test_*
-!tests/test_*.cpp
-!tests/testdata/*.pcap
-*.log
-*.trs
-config.guess
-config.sub
-ltmain.sh
-m4/ltoptions.m4
-m4/ltsugar.m4
-m4/ltversion.m4
-m4/lt~obsolete.m4
-py-compile
-.libs
-
-*.ts
-
-# gcov
-*.gcno
-*.gcda
-*.gcov
-
-# doxygen
-doxygen-out
-
-# thrift
-gen-cpp
-gen-py
-
-VERSION-build
-
-# dist archives
-*.tar.gz
-
-core
-vgcore*
+# Generated protobuf files
+services/generated/
+third_party/p4runtime/

BUILD

@@ -0,0 +1,54 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "bmv2_core",
+    srcs = glob(
+        [
+            "src/**/*.cpp",
+            "src/**/*.c",
+            "PI/src/*.cpp",
+            "targets/simple_switch/simple_switch.cpp",
+            "targets/simple_switch/primitives.cpp",
+        ],
+        exclude = [
+            "src/bm_apps/**",
+            "src/bm_runtime/**",
+            "src/bf_lpm_trie/**",
+            "src/bm_sim/md5.c",
+        ],
+    ),
+    hdrs = glob([
+        "include/**/*.h",
+        "src/**/*.h",
+        "targets/**/*.h",
+        "third_party/spdlog/**/*.h",
+        "third_party/spdlog/**/*.cc",
+        "PI/**/*.h",
+    ]),
+    includes = [
+        "include",
+        "third_party/spdlog",
+        "PI",
+        "src/BMI",
+        "src/bm_sim",
+        "targets/simple_switch",
+        "PI/src",
+    ],
+    linkopts = [
+        "-L/opt/homebrew/opt/gmp/lib", "-lgmp",
+        "-L/opt/homebrew/opt/libpcap/lib", "-lpcap",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "@protobuf//:protobuf",
+        "//third_party/gmp:gmp",
+        "//third_party/jsoncpp:jsoncpp",
+        "@pi//:pi",
+        "@grpc//:grpc++",
+        "@boost.thread//:boost.thread",
+        "@boost.filesystem//:boost.filesystem",
+        "@boost.program_options//:boost.program_options",
+        "@boost.multiprecision//:boost.multiprecision",
+        "@boost.variant//:boost.variant",
+    ],
+)

MODULE.bazel

@@ -0,0 +1,23 @@
+module(
+    name = "behavioral_model",
+    version = "1.0.0",
+)
+
+bazel_dep(name = "rules_cc", version = "0.2.4")
+bazel_dep(name = "protobuf", version = "29.1")
+bazel_dep(name = "googletest", version = "1.15.2")
+bazel_dep(name = "grpc", version = "1.71.0")
+bazel_dep(name = "jsoncpp", version = "1.9.5")
+bazel_dep(name = "fmt", version = "10.1.1")
+bazel_dep(name = "boost.thread", version = "1.83.0.bcr.4")
+bazel_dep(name = "boost.filesystem", version = "1.83.0.bcr.4")
+bazel_dep(name = "boost.program_options", version = "1.83.0.bcr.4")
+bazel_dep(name = "boost.multiprecision", version = "1.83.0.bcr.4")
+bazel_dep(name = "boost.variant", version = "1.83.0.bcr.4")
+bazel_dep(name = "pi", version = "1.0.0")
+
+git_override(
+    module_name = "pi",
+    remote = "https://github.com/kunal9812/PI",
+    commit = "cad594e",
+)

WORKSPACE.bzlmod

@@ -0,0 +1,2 @@
+# Intentionally empty.
+# Enables bzlmod mode — Bazel will use MODULE.bazel instead of WORKSPACE.bazel.

include/bm/bm_sim/dynamic_bitset.h

@@ -48,6 +48,10 @@ inline int find_lowest_bit<uint64_t>(uint64_t v) {
       find_lowest_bit<uint32_t>(sw);
 }
 
+template<>
+inline int find_lowest_bit<unsigned long>(unsigned long v) {
+  return find_lowest_bit<uint64_t>(static_cast<uint64_t>(v));
+}
 class DynamicBitset {
  public:
   using Block = unsigned long;  // NOLINT(runtime/int)

include/bm/config.h

@@ -0,0 +1,48 @@
+#ifndef _INCLUDE_BM_CONFIG_H
+#define _INCLUDE_BM_CONFIG_H 1
+
+/* Generated statically for Bazel build */
+
+/* Enable debugger */
+/* #undef BM_DEBUG_ON */
+
+/* Enable nanomsg event logger */
+/* #undef BM_ELOG_ON */
+
+/* Enable dynamic loading of modules */
+/* #undef BM_ENABLE_MODULES */
+
+#define BM_HAVE_ALGORITHM 1
+#define BM_HAVE_ARRAY 1
+#define BM_HAVE_CASSERT 1
+#define BM_HAVE_CMATH 1
+#define BM_HAVE_CSTDIO 1
+#define BM_HAVE_CTIME 1
+#define BM_HAVE_DLFCN_H 1
+#define BM_HAVE_DLOPEN 1
+#define BM_HAVE_QUEUE 1
+#define BM_HAVE_STRING 1
+#define BM_HAVE_SYS_STAT_H 1
+#define BM_HAVE_SYS_TYPES_H 1
+#define BM_HAVE_TUPLE 1
+#define BM_HAVE_UNISTD_H 1
+#define BM_HAVE_UNORDERED_MAP 1
+#define BM_HAVE_UTILITY 1
+#define BM_HAVE_VECTOR 1
+
+/* Enable compile-time macro for debug logging */
+/* #undef BM_LOG_DEBUG_ON */
+
+/* Enable compile-time macro for trace logging */
+/* #undef BM_LOG_TRACE_ON */
+
+/* Enable Nanomsg support */
+/* #undef BM_NANOMSG_ON */
+
+/* Enable Thrift support */
+/* #undef BM_THRIFT_ON */
+
+/* Implement stacks as per P4_16 spec */
+/* #undef BM_WP4_16_STACKS */
+
+#endif /* _INCLUDE_BM_CONFIG_H */

services/BUILD

@@ -0,0 +1,19 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "dataplane_interface_grpc",
+    srcs = [
+        "generated/p4/bm/dataplane_interface.pb.cc",
+        "generated/p4/bm/dataplane_interface.grpc.pb.cc",
+    ],
+    hdrs = [
+        "generated/p4/bm/dataplane_interface.pb.h",
+        "generated/p4/bm/dataplane_interface.grpc.pb.h",
+    ],
+    includes = ["generated"],
+    deps = [
+        "@protobuf//:protobuf",
+        "@grpc//:grpc++",
+    ],
+    visibility = ["//visibility:public"],
+)

services/p4/BUILD

@@ -0,0 +1 @@
+# intentionally empty

services/p4/bm/BUILD

@@ -0,0 +1,18 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "dataplane_interface_grpc",
+    srcs = [
+        "//services:generated/p4/bm/dataplane_interface.pb.cc",
+        "//services:generated/p4/bm/dataplane_interface.grpc.pb.cc",
+    ],
+    hdrs = [
+        "//services:generated/p4/bm/dataplane_interface.pb.h",
+        "//services:generated/p4/bm/dataplane_interface.grpc.pb.h",
+    ],
+    deps = [
+        "@protobuf//:protobuf",
+        "@grpc//:grpc++",
+    ],
+    visibility = ["//visibility:public"],
+)