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-rw-r--r--samples/bpf/bpf_load.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/samples/bpf/bpf_load.h b/samples/bpf/bpf_load.h
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+++ b/samples/bpf/bpf_load.h
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+#ifndef __BPF_LOAD_H
+#define __BPF_LOAD_H
+
+#define MAX_MAPS 32
+#define MAX_PROGS 32
+
+extern int map_fd[MAX_MAPS];
+extern int prog_fd[MAX_PROGS];
+
+/* 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(char *path);
+
+#endif
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