remove BuildLibXdpFromSource

microsoft · Apr 25, 2024 · c178671 · c178671
1 parent 1703841
commit c178671
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Showing 5 changed files with 11 additions and 88 deletions.
diff --git a/.gitmodules b/.gitmodules
@@ -12,10 +12,6 @@
 [submodule "submodules/clog"]
 	path = submodules/clog
 	url = https://github.com/microsoft/CLOG.git
-[submodule "submodules/xdp-tools"]
-	path = submodules/xdp-tools
-	url = https://github.com/xdp-project/xdp-tools.git
-	branch = v1.4.2
 [submodule "submodules/xdp-for-windows"]
 	path = submodules/xdp-for-windows
 	url = https://github.com/microsoft/xdp-for-windows.git

diff --git a/docs/BUILD.md b/docs/BUILD.md
@@ -219,7 +219,7 @@ sudo MSQUIC_ENABLE_XDP=1 ./artifacts/bin/linux/x64_Debug_openssl3/msquictest --d
 - Q: Is this workload really running on XDP?  
 A: If you have the `xdp-dump` command, try using `sudo xdp-dump --list-interfaces`. The `xdp_main` function is located in `src/platform/datapath_raw_xdp_linux_kern.c`. If none of the interfaces load the XDP program, something must be wrong.   
 ```
-$ sudo ./submodules/xdp-tools/xdp-dump/xdpdump --list-interfaces
+$ sudo ./xdp-tools/xdp-dump/xdpdump --list-interfaces
 Interface        Prio  Program name      Mode     ID   Tag               Chain actions
 --------------------------------------------------------------------------------------
 lo                     <No XDP program loaded!>
@@ -233,14 +233,6 @@ duo1                   xdp_dispatcher    native   608225 4d7e87c0d30db711
 
 - Q: Is Ubuntu 20.04LTS supported?  
 A: Not officially, but you can still **build** it by running `apt-get upgrade linux-libc-dev`. Please be aware of potential side effects from the **upgrade**.
-- Q: Can I build libxdp/libbpf from source?  
-A: Yes. Try below. We don't use CI/CD for the source version, but we saw xdp-tools v1.4.2 from source works.
-```sh
-pwsh ./scripts/prepare-machine.ps1 -BuildLibXdpFromSource
-pwsh ./scripts/build.ps1 -BuildLibXdpFromSource
-# try using ldd whether your libxdp.so/libbpf.so are linked
-# When running binary, set LIBXDP_SKIP_DISPATCHER=1 or LIBXDP_OBJECT_PATH=${where xdp-dispatcher.o is located}
-```
 
 ### macOS
 The build needs CMake and compiler.

diff --git a/scripts/build.ps1 b/scripts/build.ps1
@@ -212,10 +212,7 @@ param (
     [switch]$OneBranch = $false,
 
     [Parameter(Mandatory = $false)]
-    [string]$ToolchainFile = "",
-
-    [Parameter(Mandatory = $false)]
-    [switch]$BuildLibXdpFromSource = $false
+    [string]$ToolchainFile = ""
 )
 
 Set-StrictMode -Version 'Latest'
@@ -406,9 +403,6 @@ function CMake-Generate {
                 "arm64" { $env:PKG_CONFIG_PATH="$SysRoot/usr/lib/aarch64-linux-gnu/pkgconfig" }
             }
        }
-       if ($BuildLibXdpFromSource) {
-           $Arguments += " -DQUIC_BUILD_LIBXDP_FROM_SOURCE=on"
-       }
     }
     if ($ToolchainFile -ne "") {
         $Arguments += " -DCMAKE_TOOLCHAIN_FILE=""$ToolchainFile"""

diff --git a/scripts/prepare-machine.ps1 b/scripts/prepare-machine.ps1
@@ -86,10 +86,7 @@ param (
     [switch]$DisableTest,
 
     [Parameter(Mandatory = $false)]
-    [switch]$InstallCoreNetCiDeps,
-
-    [Parameter(Mandatory = $false)]
-    [switch]$BuildLibXdpFromSource = $false
+    [switch]$InstallCoreNetCiDeps
 )
 
 # Admin is required because a lot of things are installed to the local machine
@@ -476,12 +473,6 @@ if ($ForBuild -or $ForContainerBuild) {
     }
 
     git submodule update --jobs=8
-    if ($IsLinux -and $BuildLibXdpFromSource) {
-        Write-Host "Initializing xdp-tools submodules"
-        git submodule update --init --recursive --jobs=8 submodules/xdp-tools
-        # temporal workaround for libxdp v1.4.2
-        sed -i '/BPF_CFLAGS += -I$(HEADER_DIR)/ { /${ARCH_INCLUDES}/! s|$| ${ARCH_INCLUDES}| }' submodules/xdp-tools/lib/libxdp/Makefile
-    }
 }
 
 if ($InstallCoreNetCiDeps) { Download-CoreNet-Deps }
@@ -536,11 +527,9 @@ if ($IsLinux) {
         sudo apt-get install -y liblttng-ust-dev
         sudo apt-get install -y gdb
         if ((bash -c 'lsb_release -r') -match '22.04') {
-            if (!$BuildLibXdpFromSource) {
-                sudo apt-add-repository "deb http://mirrors.kernel.org/ubuntu noble main" -y
-                sudo apt-get update -y
-                sudo apt-get install -y libxdp1 libbpf1
-            }
+            sudo apt-add-repository "deb http://mirrors.kernel.org/ubuntu noble main" -y
+            sudo apt-get update -y
+            sudo apt-get install -y libxdp1 libbpf1
             sudo apt-get install -y libnl-3-200 libnl-route-3-200 libnl-genl-3-200
             if ($UseXdp) {
                 sudo apt-get -y install iproute2 iptables

diff --git a/src/platform/CMakeLists.txt b/src/platform/CMakeLists.txt
@@ -71,60 +71,12 @@ if("${CX_PLATFORM}" STREQUAL "windows")
 elseif(LINUX_XDP_ENABLED)
     find_library(NL_LIB nl-3)
     find_library(NL_ROUTE_LIB nl-route-3)
-    if (NOT QUIC_BUILD_LIBXDP_FROM_SOURCE)
-        target_include_directories(platform PRIVATE /usr/include/xdp)
-        target_include_directories(platform PRIVATE /usr/include/bpf)
-        set(XDP_PROG_INCLUDE_DIR "-I/usr/include/bpf")
+    find_library(XDP_LIB libxdp.so)
+    find_library(BPF_LIB libbpf.so)
+    target_include_directories(platform PRIVATE /usr/include/xdp)
+    target_include_directories(platform PRIVATE /usr/include/bpf)
+    set(XDP_PROG_INCLUDE_DIR "-I/usr/include/bpf")
 
-        find_library(XDP_LIB libxdp.so)
-        find_library(BPF_LIB libbpf.so)
-    else ()
-        # XDP Tools and libbpf paths
-        set(XDP_TOOLS_DIR ${PROJECT_SOURCE_DIR}/submodules/xdp-tools)
-
-        # Include directories for libxdp.so and libbpf.so
-        target_include_directories(platform PRIVATE ${XDP_TOOLS_DIR}/headers/xdp)       # libxdp.h, xsk.h
-        target_include_directories(platform PRIVATE ${XDP_TOOLS_DIR}/lib/libbpf/src)    # libbpf.h
-        set(XDP_PROG_INCLUDE_DIR "-I${PROJECT_SOURCE_DIR}/submodules/xdp-tools/lib/libbpf/src;-I${PROJECT_SOURCE_DIR}/submodules/xdp-tools/lib")
-
-        set(LIBXDP_DIR ${XDP_TOOLS_DIR}/lib/libxdp)
-        set(LIBBPF_DIR ${XDP_TOOLS_DIR}/lib/libbpf/src)
-
-        # Custom command to build XDP Tools
-        add_custom_command(
-            OUTPUT ${LIBXDP_DIR}/libxdp.so ${LIBBPF_DIR}/libbpf.so ${QUIC_OUTPUT_DIR}/xdp-dispatcher.o
-            COMMAND ./configure
-            COMMAND make
-            # Experimental!
-            # xdp-dispatcher.o need to be placed at
-            # - "./" (libxdp Debug build)
-            # - "/usr/lib/bpf"
-            # - Specified by LIBXDP_OBJECT_PATH
-            COMMAND cp ${XDP_TOOLS_DIR}/lib/libxdp/xdp-dispatcher.o ${QUIC_OUTPUT_DIR}/
-            WORKING_DIRECTORY ${XDP_TOOLS_DIR}
-        )
-
-        # Add custom target and make platform depend on it
-        add_custom_target(xdp_tools DEPENDS ${LIBXDP_DIR}/libxdp.so ${LIBBPF_DIR}/libbpf.so)
-        add_dependencies(platform xdp_tools)
-
-        if (BUILD_SHARED_LIBS)
-            add_custom_target(
-                CopyLibsAndLinks ALL
-                COMMAND cp -P ${LIBXDP_DIR}/*.so* ${QUIC_OUTPUT_DIR}/
-                COMMAND cp -P ${LIBBPF_DIR}/*.so* ${QUIC_OUTPUT_DIR}/
-                DEPENDS xdp_tools
-            )
-            set_target_properties(platform PROPERTIES BUILD_WITH_INSTALL_RPATH TRUE)
-            set_target_properties(platform PROPERTIES INSTALL_RPATH "${QUIC_OUTPUT_DIR}/libxdp.so;${QUIC_OUTPUT_DIR}/libbpf.so")
-            add_dependencies(platform CopyLibsAndLinks)
-            set(XDP_LIB ${QUIC_OUTPUT_DIR}/libxdp.so)
-            set(BPF_LIB ${QUIC_OUTPUT_DIR}/libbpf.so)
-        else()
-            set(XDP_LIB ${LIBXDP_DIR}/libxdp.so) # replaced to .a later
-            set(BPF_LIB ${LIBBPF_DIR}/libbpf.so)
-        endif()
-    endif()
     # building XDP program
     add_custom_command(
         OUTPUT ${QUIC_OUTPUT_DIR}/datapath_raw_xdp_kern.o