mbuf: support dynamic fields and flags

[dpdk.git] / lib / librte_mbuf / rte_mbuf_core.h

diff --git a/lib/librte_mbuf/rte_mbuf_core.h b/lib/librte_mbuf/rte_mbuf_core.h
index 3398c12..3022701 100644 (file)
--- a/lib/librte_mbuf/rte_mbuf_core.h
+++ b/lib/librte_mbuf/rte_mbuf_core.h
@@ -184,9 +184,12 @@ extern "C" {
 #define PKT_RX_OUTER_L4_CKSUM_GOOD     (1ULL << 22)
 #define PKT_RX_OUTER_L4_CKSUM_INVALID  ((1ULL << 21) | (1ULL << 22))
 
-/* add new RX flags here */
+/* add new RX flags here, don't forget to update PKT_FIRST_FREE */
 
-/* add new TX flags here */
+#define PKT_FIRST_FREE (1ULL << 23)
+#define PKT_LAST_FREE (1ULL << 39)
+
+/* add new TX flags here, don't forget to update PKT_LAST_FREE  */
 
 /**
  * Indicate that the metadata field in the mbuf is in use.
@@ -689,6 +692,7 @@ struct rte_mbuf {
         */
        struct rte_mbuf_ext_shared_info *shinfo;
 
+       uint64_t dynfield1[2]; /**< Reserved for dynamic fields. */
 } __rte_cache_aligned;
 
 /**