X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_bpf%2Fbpf_def.h;h=d39992997a2cd48d2bb9c8e0d0aa4a6b57335713;hb=be848992298b7a64a161487600a4070e52b9d26d;hp=6b69de345618caa08d2d933a0b986b803118982d;hpb=94972f35a02e91d60d68d1eea041496903124568;p=dpdk.git

diff --git a/lib/librte_bpf/bpf_def.h b/lib/librte_bpf/bpf_def.h
index 6b69de3456..d39992997a 100644
--- a/lib/librte_bpf/bpf_def.h
+++ b/lib/librte_bpf/bpf_def.h
@@ -120,6 +120,14 @@ enum {
 	EBPF_REG_NUM,
 };
 
+/*
+ * When EBPF_CALL instruction has src_reg == EBPF_PSEUDO_CALL,
+ * it should be treated as pseudo-call instruction, where
+ * imm value contains pc-relative offset to another EBPF function.
+ * Right now DPDK EBPF library doesn't support it.
+ */
+#define	EBPF_PSEUDO_CALL	EBPF_REG_1
+
 /*
  * eBPF instruction format
  */
@@ -131,6 +139,11 @@ struct ebpf_insn {
 	int32_t imm;
 };
 
+/*
+ * eBPF allows functions with R1-R5 as arguments.
+ */
+#define	EBPF_FUNC_MAX_ARGS	(EBPF_REG_6 - EBPF_REG_1)
+
 #ifdef __cplusplus
 }
 #endif