bpf tasks

bpf core

• stringmap {?}
• bounded loops { DanielB }
• func calls and indirect calls { @4ast }
• C-Type Format : kernel { @iamkafai } bcc { @drzaeus77 }
• lsm hooks { android folks }
• read only maps { android folks }
• multi program cgroup-bpf { @4ast } tracepoints { @yonghong-song }
• cgroup-bpf for device acl { RomanG }
• cgroup-bpf fs_sync acl/throttle/monitor { ? }

bpf tracing

• fd-based kprobe api {?}
• uaddr->file_handle+off in stack traces { @palmtenor }
• optimized kprobe (no irq disable, don't save all regs, etc) {?}
• tcp tracepoints {?}
• enhance bpf_probe_read() with speculative page faults find_vma()->access() {?}
• combine pmu counters in kernel {?}
• inode-based .text rewrite for fast uprobes { @yonghong-song }
• pmu count + time_enabled + time_running { @yonghong-song }
• unexposed pt_regs issue (arm64, s390x) { ? }

bpf llvm

• inline asm support { @yonghong-song }
• annotated asm in /var/tmp/bcc associated with prog_tag { @yonghong-song }
• unknown asm ignore to solve arm64/mips kernel headers { @yonghong-song }
• warn/error in llvm to avoid kernel verifier errors (uninit vars, loops, unknown funcs, ...) {?}
• 32bit subregisters {?}

bpf security

• seccomp + bpf { AndyL }
• landlock { mickael }

bpf testing

• Move lots of samples that should rather go to selftests actually into selftests {maybe Daniel?}
• Convert them to use BPF_PROG_TEST_RUN where appropriate
• Clean up whole sample dir, e.g. better structuring of remaining samples (subdirs for type of samples?) {?}

xdp

• XDP_REDIRECT for all XDP supported drivers {Various}
  • brcm { AndyG }
• Consistent XDP headroom across drivers (some still have 0 headroom today) {Various}
• Native XDP driver support at min for: sfc {Ed}, ena {Netanel?}