vhost: introduce vDPA device class

[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 9a8557d..16600f1 100644 (file)
--- a/lib/librte_mbuf/rte_mbuf_core.h
+++ b/lib/librte_mbuf/rte_mbuf_core.h
@@ -12,6 +12,8 @@
  * packet offload flags and some related macros.
  * For majority of DPDK entities, it is not recommended to include
  * this file directly, use include <rte_mbuf.h> instead.
+ *
+ * New fields and flags should fit in the "dynamic space".
  */
 
 #include <stdint.h>
@@ -406,19 +408,6 @@ extern "C" {
 #define        RTE_MBUF_DEFAULT_BUF_SIZE       \
        (RTE_MBUF_DEFAULT_DATAROOM + RTE_PKTMBUF_HEADROOM)
 
-/*
- * define a set of marker types that can be used to refer to set points in the
- * mbuf.
- */
-__extension__
-typedef void    *MARKER[0];   /**< generic marker for a point in a structure */
-__extension__
-typedef uint8_t  MARKER8[0];  /**< generic marker with 1B alignment */
-
- /** marker that allows us to overwrite 8 bytes with a single assignment */
-__extension__
-typedef uint64_t MARKER64[0];
-
 struct rte_mbuf_sched {
        uint32_t queue_id;   /**< Queue ID. */
        uint8_t traffic_class;
@@ -478,7 +467,7 @@ enum {
  * The generic rte_mbuf, containing a packet mbuf.
  */
 struct rte_mbuf {
-       MARKER cacheline0;
+       RTE_MARKER cacheline0;
 
        void *buf_addr;           /**< Virtual address of segment buffer. */
        /**
@@ -494,7 +483,7 @@ struct rte_mbuf {
        } __rte_aligned(sizeof(rte_iova_t));
 
        /* next 8 bytes are initialised on RX descriptor rearm */
-       MARKER64 rearm_data;
+       RTE_MARKER64 rearm_data;
        uint16_t data_off;
 
        /**
@@ -522,7 +511,7 @@ struct rte_mbuf {
        uint64_t ol_flags;        /**< Offload features. */
 
        /* remaining bytes are set on RX when pulling packet from descriptor */
-       MARKER rx_descriptor_fields1;
+       RTE_MARKER rx_descriptor_fields1;
 
        /*
         * The packet type, which is the combination of outer/inner L2, L3, L4
@@ -534,11 +523,12 @@ struct rte_mbuf {
        RTE_STD_C11
        union {
                uint32_t packet_type; /**< L2/L3/L4 and tunnel information. */
+               __extension__
                struct {
-                       uint32_t l2_type:4; /**< (Outer) L2 type. */
-                       uint32_t l3_type:4; /**< (Outer) L3 type. */
-                       uint32_t l4_type:4; /**< (Outer) L4 type. */
-                       uint32_t tun_type:4; /**< Tunnel type. */
+                       uint8_t l2_type:4;   /**< (Outer) L2 type. */
+                       uint8_t l3_type:4;   /**< (Outer) L3 type. */
+                       uint8_t l4_type:4;   /**< (Outer) L4 type. */
+                       uint8_t tun_type:4;  /**< Tunnel type. */
                        RTE_STD_C11
                        union {
                                uint8_t inner_esp_next_proto;
@@ -554,7 +544,7 @@ struct rte_mbuf {
                                        /**< Inner L3 type. */
                                };
                        };
-                       uint32_t inner_l4_type:4; /**< Inner L4 type. */
+                       uint8_t inner_l4_type:4; /**< Inner L4 type. */
                };
        };
 
@@ -610,7 +600,7 @@ struct rte_mbuf {
        uint64_t timestamp;
 
        /* second cache line - fields only used in slow path or on TX */
-       MARKER cacheline1 __rte_cache_min_aligned;
+       RTE_MARKER cacheline1 __rte_cache_min_aligned;
 
        RTE_STD_C11
        union {