Hi Ingo, David, posting whole thing again as RFC to get feedback on syscall only. If syscall bpf(int cmd, union bpf_attr *attr, unsigned int size) is ok, I'll split them into small chunks as requested and will repost without RFC. Right now please only review syscall API patch 0003 introduces sys_bpf and first BPF_MAP_CREATE command patch 0005 adds four more commands to the same syscall patch 0007 adds BPF_PROG_LOAD command patch 0010 extends BPF_PROG_LOAD command with 3 more attributes patch 0021 adds user space wrapper for BPF syscall patch 0023 uses these wrappers in verifier testsuite Note that additions of commands and attributes kept this syscall backwards compatible from one patch to another. I've decided not to bother with forward compatiblity for now. We can address it later the way perf_event_open did. Please ignore other patches, since I cannot easily remove them without breaking compilation btw, tested on x64/i386 and comiled tested on arm with NET-less config. V6->V7: - only BPF syscall interface changed from long+nlattr+a_lot_of_type_casts to single 'union bpf_attr'. It pretty much removed all type casts in kernel and in user space that were there because of 'long' and because of 'nlattr' Thanks for feedback. I think this version is definitely cleaner. As a side note I've addressed Cong's comment regarding commit log. Now it documents syscall itself instead of wrappers of syscall. If anyone prefers to see patches in the browser, they are here: https://git.kernel.org/cgit/linux/kernel/git/ast/bpf.git/log/?h=v7 Thanks! Alexei Starovoitov (28): net: filter: add "load 64-bit immediate" eBPF instruction net: filter: split filter.h and expose eBPF to user space bpf: introduce syscall(BPF, ...) and BPF maps bpf: enable bpf syscall on x64 and i386 bpf: add lookup/update/delete/iterate methods to BPF maps bpf: add hashtable type of BPF maps bpf: expand BPF syscall with program load/unload bpf: handle pseudo BPF_CALL insn bpf: verifier (add docs) bpf: verifier (add ability to receive verification log) bpf: handle pseudo BPF_LD_IMM64 insn bpf: verifier (add branch/goto checks) bpf: verifier (add verifier core) bpf: verifier (add state prunning optimization) bpf: allow eBPF programs to use maps bpf: split eBPF out of NET tracing: allow eBPF programs to be attached to events tracing: allow eBPF programs call printk() tracing: allow eBPF programs to be attached to kprobe/kretprobe tracing: allow eBPF programs to call ktime_get_ns() and get_current() samples: bpf: add mini eBPF library to manipulate maps and programs samples: bpf: example of tracing filters with eBPF bpf: verifier test bpf: llvm backend samples: bpf: elf file loader samples: bpf: eBPF example in C samples: bpf: counting eBPF example in C samples: bpf: IO latency analysis (iosnoop/heatmap) Documentation/networking/filter.txt | 313 +++- arch/Kconfig | 3 + arch/x86/net/bpf_jit_comp.c | 17 + arch/x86/syscalls/syscall_32.tbl | 1 + arch/x86/syscalls/syscall_64.tbl | 1 + fs/btrfs/super.c | 3 + include/linux/bpf.h | 139 ++ include/linux/filter.h | 303 +--- include/linux/ftrace_event.h | 5 + include/linux/syscalls.h | 3 +- include/trace/bpf_trace.h | 23 + include/trace/ftrace.h | 25 + include/uapi/asm-generic/unistd.h | 4 +- include/uapi/linux/Kbuild | 1 + include/uapi/linux/bpf.h | 439 +++++ kernel/Makefile | 2 +- kernel/bpf/Makefile | 2 +- kernel/bpf/core.c | 17 + kernel/bpf/hashtab.c | 365 ++++ kernel/bpf/syscall.c | 645 +++++++ kernel/bpf/verifier.c | 1910 ++++++++++++++++++++ kernel/sys_ni.c | 3 + kernel/trace/Kconfig | 1 + kernel/trace/Makefile | 1 + kernel/trace/bpf_trace.c | 264 +++ kernel/trace/trace.h | 3 + kernel/trace/trace_events.c | 41 +- kernel/trace/trace_events_filter.c | 72 +- kernel/trace/trace_kprobe.c | 28 + kernel/trace/trace_syscalls.c | 32 + lib/test_bpf.c | 21 + net/Kconfig | 1 + net/core/filter.c | 2 + samples/bpf/Makefile | 28 + samples/bpf/bpf_helpers.h | 27 + samples/bpf/bpf_load.c | 234 +++ samples/bpf/bpf_load.h | 26 + samples/bpf/dropmon.c | 122 ++ samples/bpf/ex1_kern.c | 27 + samples/bpf/ex1_user.c | 24 + samples/bpf/ex2_kern.c | 73 + samples/bpf/ex2_user.c | 94 + samples/bpf/ex3_kern.c | 104 ++ samples/bpf/ex3_user.c | 149 ++ samples/bpf/libbpf.c | 89 + samples/bpf/libbpf.h | 21 + samples/bpf/test_verifier.c | 599 ++++++ tools/bpf/llvm/.gitignore | 54 + tools/bpf/llvm/LICENSE.TXT | 70 + tools/bpf/llvm/Makefile.rules | 641 +++++++ tools/bpf/llvm/README.txt | 23 + tools/bpf/llvm/bld/Makefile | 27 + tools/bpf/llvm/bld/Makefile.common | 14 + tools/bpf/llvm/bld/Makefile.config | 124 ++ .../llvm/bld/include/llvm/Config/AsmParsers.def | 8 + .../llvm/bld/include/llvm/Config/AsmPrinters.def | 9 + .../llvm/bld/include/llvm/Config/Disassemblers.def | 8 + tools/bpf/llvm/bld/include/llvm/Config/Targets.def | 9 + .../bpf/llvm/bld/include/llvm/Support/DataTypes.h | 96 + tools/bpf/llvm/bld/lib/Makefile | 11 + .../llvm/bld/lib/Target/BPF/InstPrinter/Makefile | 10 + .../llvm/bld/lib/Target/BPF/MCTargetDesc/Makefile | 11 + tools/bpf/llvm/bld/lib/Target/BPF/Makefile | 17 + .../llvm/bld/lib/Target/BPF/TargetInfo/Makefile | 10 + tools/bpf/llvm/bld/lib/Target/Makefile | 11 + tools/bpf/llvm/bld/tools/Makefile | 12 + tools/bpf/llvm/bld/tools/llc/Makefile | 15 + tools/bpf/llvm/lib/Target/BPF/BPF.h | 28 + tools/bpf/llvm/lib/Target/BPF/BPF.td | 29 + tools/bpf/llvm/lib/Target/BPF/BPFAsmPrinter.cpp | 100 + tools/bpf/llvm/lib/Target/BPF/BPFCallingConv.td | 24 + tools/bpf/llvm/lib/Target/BPF/BPFFrameLowering.cpp | 36 + tools/bpf/llvm/lib/Target/BPF/BPFFrameLowering.h | 35 + tools/bpf/llvm/lib/Target/BPF/BPFISelDAGToDAG.cpp | 182 ++ tools/bpf/llvm/lib/Target/BPF/BPFISelLowering.cpp | 683 +++++++ tools/bpf/llvm/lib/Target/BPF/BPFISelLowering.h | 105 ++ tools/bpf/llvm/lib/Target/BPF/BPFInstrFormats.td | 29 + tools/bpf/llvm/lib/Target/BPF/BPFInstrInfo.cpp | 162 ++ tools/bpf/llvm/lib/Target/BPF/BPFInstrInfo.h | 53 + tools/bpf/llvm/lib/Target/BPF/BPFInstrInfo.td | 498 +++++ tools/bpf/llvm/lib/Target/BPF/BPFMCInstLower.cpp | 77 + tools/bpf/llvm/lib/Target/BPF/BPFMCInstLower.h | 40 + tools/bpf/llvm/lib/Target/BPF/BPFRegisterInfo.cpp | 122 ++ tools/bpf/llvm/lib/Target/BPF/BPFRegisterInfo.h | 65 + tools/bpf/llvm/lib/Target/BPF/BPFRegisterInfo.td | 39 + tools/bpf/llvm/lib/Target/BPF/BPFSubtarget.cpp | 23 + tools/bpf/llvm/lib/Target/BPF/BPFSubtarget.h | 33 + tools/bpf/llvm/lib/Target/BPF/BPFTargetMachine.cpp | 66 + tools/bpf/llvm/lib/Target/BPF/BPFTargetMachine.h | 69 + .../lib/Target/BPF/InstPrinter/BPFInstPrinter.cpp | 81 + .../lib/Target/BPF/InstPrinter/BPFInstPrinter.h | 34 + .../lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp | 89 + .../llvm/lib/Target/BPF/MCTargetDesc/BPFBaseInfo.h | 33 + .../Target/BPF/MCTargetDesc/BPFELFObjectWriter.cpp | 56 + .../lib/Target/BPF/MCTargetDesc/BPFMCAsmInfo.h | 34 + .../Target/BPF/MCTargetDesc/BPFMCCodeEmitter.cpp | 167 ++ .../Target/BPF/MCTargetDesc/BPFMCTargetDesc.cpp | 115 ++ .../lib/Target/BPF/MCTargetDesc/BPFMCTargetDesc.h | 56 + .../lib/Target/BPF/TargetInfo/BPFTargetInfo.cpp | 13 + tools/bpf/llvm/tools/llc/llc.cpp | 381 ++++ 100 files changed, 10742 insertions(+), 302 deletions(-) create mode 100644 include/linux/bpf.h create mode 100644 include/trace/bpf_trace.h create mode 100644 include/uapi/linux/bpf.h create mode 100644 kernel/bpf/hashtab.c create mode 100644 kernel/bpf/syscall.c create mode 100644 kernel/bpf/verifier.c create mode 100644 kernel/trace/bpf_trace.c create mode 100644 samples/bpf/Makefile create mode 100644 samples/bpf/bpf_helpers.h create mode 100644 samples/bpf/bpf_load.c create mode 100644 samples/bpf/bpf_load.h create mode 100644 samples/bpf/dropmon.c create mode 100644 samples/bpf/ex1_kern.c create mode 100644 samples/bpf/ex1_user.c create mode 100644 samples/bpf/ex2_kern.c create mode 100644 samples/bpf/ex2_user.c create mode 100644 samples/bpf/ex3_kern.c create mode 100644 samples/bpf/ex3_user.c create mode 100644 samples/bpf/libbpf.c create mode 100644 samples/bpf/libbpf.h create mode 100644 samples/bpf/test_verifier.c create mode 100644 tools/bpf/llvm/.gitignore create mode 100644 tools/bpf/llvm/LICENSE.TXT create mode 100644 tools/bpf/llvm/Makefile.rules create mode 100644 tools/bpf/llvm/README.txt create mode 100644 tools/bpf/llvm/bld/Makefile create mode 100644 tools/bpf/llvm/bld/Makefile.common create mode 100644 tools/bpf/llvm/bld/Makefile.config create mode 100644 tools/bpf/llvm/bld/include/llvm/Config/AsmParsers.def create mode 100644 tools/bpf/llvm/bld/include/llvm/Config/AsmPrinters.def create mode 100644 tools/bpf/llvm/bld/include/llvm/Config/Disassemblers.def create mode 100644 tools/bpf/llvm/bld/include/llvm/Config/Targets.def create mode 100644 tools/bpf/llvm/bld/include/llvm/Support/DataTypes.h create mode 100644 tools/bpf/llvm/bld/lib/Makefile create mode 100644 tools/bpf/llvm/bld/lib/Target/BPF/InstPrinter/Makefile create mode 100644 tools/bpf/llvm/bld/lib/Target/BPF/MCTargetDesc/Makefile create mode 100644 tools/bpf/llvm/bld/lib/Target/BPF/Makefile create mode 100644 tools/bpf/llvm/bld/lib/Target/BPF/TargetInfo/Makefile create mode 100644 tools/bpf/llvm/bld/lib/Target/Makefile create mode 100644 tools/bpf/llvm/bld/tools/Makefile create mode 100644 tools/bpf/llvm/bld/tools/llc/Makefile create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPF.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPF.td create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFAsmPrinter.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFCallingConv.td create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFFrameLowering.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFFrameLowering.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFISelDAGToDAG.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFISelLowering.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFISelLowering.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFInstrFormats.td create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFInstrInfo.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFInstrInfo.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFInstrInfo.td create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFMCInstLower.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFMCInstLower.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFRegisterInfo.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFRegisterInfo.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFRegisterInfo.td create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFSubtarget.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFSubtarget.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFTargetMachine.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/BPFTargetMachine.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/InstPrinter/BPFInstPrinter.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/InstPrinter/BPFInstPrinter.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/MCTargetDesc/BPFAsmBackend.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/MCTargetDesc/BPFBaseInfo.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/MCTargetDesc/BPFELFObjectWriter.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/MCTargetDesc/BPFMCAsmInfo.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/MCTargetDesc/BPFMCCodeEmitter.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/MCTargetDesc/BPFMCTargetDesc.cpp create mode 100644 tools/bpf/llvm/lib/Target/BPF/MCTargetDesc/BPFMCTargetDesc.h create mode 100644 tools/bpf/llvm/lib/Target/BPF/TargetInfo/BPFTargetInfo.cpp create mode 100644 tools/bpf/llvm/tools/llc/llc.cpp -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
