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-rw-r--r--utils/keytable/bpf_load.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/utils/keytable/bpf_load.h b/utils/keytable/bpf_load.h
new file mode 100644
index 00000000..ec9763e4
--- /dev/null
+++ b/utils/keytable/bpf_load.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __BPF_LOAD_H
+#define __BPF_LOAD_H
+
+#define BPF_LOG_BUF_SIZE (256 * 1024)
+
+#define MAX_MAPS 32
+#define MAX_PROGS 64
+
+struct bpf_load_map_def {
+ unsigned int type;
+ unsigned int key_size;
+ unsigned int value_size;
+ unsigned int max_entries;
+ unsigned int map_flags;
+ unsigned int inner_map_idx;
+ unsigned int numa_node;
+};
+
+struct bpf_map_data {
+ int fd;
+ char *name;
+ size_t elf_offset;
+ struct bpf_load_map_def def;
+};
+
+/* parses elf file compiled by llvm .c->.o
+ * . parses 'maps' section and creates maps via BPF syscall
+ * . parses 'license' section and passes it to syscall
+ * . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by
+ * storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD
+ * . loads eBPF programs via BPF syscall
+ *
+ * One ELF file can contain multiple BPF programs which will be loaded
+ * and their FDs stored stored in prog_fd array
+ *
+ * returns zero on success
+ */
+int load_bpf_file(const char *path, int lirc_fd);
+
+int bpf_param(const char *name, int *val);
+
+#endif

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