bpf: add extra information for external symbol definitions

[dpdk.git] / lib / librte_bpf / rte_bpf.h

diff --git a/lib/librte_bpf/rte_bpf.h b/lib/librte_bpf/rte_bpf.h
index 1249a99..ad62ef2 100644 (file)
--- a/lib/librte_bpf/rte_bpf.h
+++ b/lib/librte_bpf/rte_bpf.h
@@ -40,7 +40,11 @@ enum rte_bpf_arg_type {
  */
 struct rte_bpf_arg {
        enum rte_bpf_arg_type type;
-       size_t size;     /**< for pointer types, size of data it points to */
+       /**
+        * for ptr type - max size of data buffer it points to
+        * for raw type - the size (in bytes) of the value
+        */
+       size_t size;
        size_t buf_size;
        /**< for mbuf ptr type, max size of rte_mbuf data buffer */
 };
@@ -66,10 +70,19 @@ struct rte_bpf_xsym {
        const char *name;        /**< name */
        enum rte_bpf_xtype type; /**< type */
        union {
-               uint64_t (*func)(uint64_t, uint64_t, uint64_t,
+               struct {
+                       uint64_t (*val)(uint64_t, uint64_t, uint64_t,
                                uint64_t, uint64_t);
-               void *var;
-       }; /**< value */
+                       uint32_t nb_args;
+                       struct rte_bpf_arg args[EBPF_FUNC_MAX_ARGS];
+                       /**< Function arguments descriptions. */
+                       struct rte_bpf_arg ret; /**< function return value. */
+               } func;
+               struct {
+                       void *val; /**< actual memory location */
+                       struct rte_bpf_arg desc; /**< type, size, etc. */
+               } var; /**< external variable */
+       };
 };
 
 /**