diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 3cb6b9e70080..d3aea3931b85 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -3079,6 +3079,56 @@ void bpf_dynptr_set_null(struct bpf_dynptr_kern *ptr); void bpf_dynptr_set_rdonly(struct bpf_dynptr_kern *ptr); void bpf_prog_report_arena_violation(bool write, unsigned long addr, unsigned long fault_ip); +static __always_inline u32 +bpf_prog_run_array_sleepable(const struct bpf_prog_array *array, + const void *ctx, bpf_prog_run_fn run_prog) +{ + const struct bpf_prog_array_item *item; + struct bpf_prog *prog; + struct bpf_run_ctx *old_run_ctx; + struct bpf_trace_run_ctx run_ctx; + u32 ret = 1; + + if (unlikely(!array)) + return ret; + + migrate_disable(); + + run_ctx.is_uprobe = false; + + old_run_ctx = bpf_set_run_ctx(&run_ctx.run_ctx); + item = &array->items[0]; + while ((prog = READ_ONCE(item->prog))) { + /* Skip dummy_bpf_prog placeholder (len == 0) */ + if (unlikely(!prog->len)) { + item++; + continue; + } + + if (unlikely(!bpf_prog_get_recursion_context(prog))) { + bpf_prog_inc_misses_counter(prog); + bpf_prog_put_recursion_context(prog); + item++; + continue; + } + + run_ctx.bpf_cookie = item->bpf_cookie; + + if (!prog->sleepable) { + guard(rcu)(); + ret &= run_prog(prog, ctx); + } else { + ret &= run_prog(prog, ctx); + } + + bpf_prog_put_recursion_context(prog); + item++; + } + bpf_reset_run_ctx(old_run_ctx); + migrate_enable(); + return ret; +} + #else /* !CONFIG_BPF_SYSCALL */ static inline struct bpf_prog *bpf_prog_get(u32 ufd) {