Basic HVM data structures and functions

[palacios.git] / palacios / include / vnet / vnet.h

diff --git a/palacios/include/vnet/vnet.h b/palacios/include/vnet/vnet.h
index 949f0b2..ae12896 100644 (file)
--- a/palacios/include/vnet/vnet.h
+++ b/palacios/include/vnet/vnet.h
@@ -41,6 +41,37 @@
 
 #define VNET_HASH_SIZE         17
 
+#define VNET_MAX_HEADER_LEN 128
+
+/*
+  A VNET header is the data that needs to be
+  prefaced to an outgoing packet for a specific
+  MAC pair and qualifiers
+*/
+struct v3_vnet_header {
+    // this header is for data that match
+    uint8_t src_mac[ETH_ALEN];
+    uint8_t dst_mac[ETH_ALEN];
+
+    uint8_t src_mac_qual;
+    uint8_t dst_mac_qual;
+    
+#define VNET_HEADER_NOMATCH 0 // Could not find a header
+#define VNET_HEADER_NONE  1   // There is no header, send/receive without change
+#define VNET_HEADER_RAW   2   // Prepend the following data on a send, remove this much data on a receive
+#define VNET_HEADER_UDP   3   // Prepend this UDP header and then send this as a UDP packet / dual on receive
+#define VNET_HEADER_TCP   4   // Prepend this TCP header and then send this as a TCP segment / dual on receive
+#define VNET_HEADER_VXLAN 5   // Prepend this UDP header + VXLAN ID / dual on receive
+
+    uint32_t header_type;
+
+    uint32_t header_len;
+    uint8_t  header_data[VNET_MAX_HEADER_LEN];
+
+
+} __attribute__((packed));
+
+
 struct v3_vnet_route {
     uint8_t src_mac[ETH_ALEN];
     uint8_t dst_mac[ETH_ALEN];
@@ -53,6 +84,7 @@ struct v3_vnet_route {
  
     int src_id;
     uint8_t src_type;
+
 } __attribute__((packed));
 
 
@@ -107,7 +139,7 @@ void v3_vnet_del_bridge(uint8_t type);
 int v3_vnet_add_route(struct v3_vnet_route route);
 void v3_vnet_del_route(uint32_t route_idx);
 
-int v3_vnet_send_pkt(struct v3_vnet_pkt * pkt, void * private_data, int synchronize);
+int v3_vnet_send_pkt(struct v3_vnet_pkt * pkt, void * private_data);
 int v3_vnet_find_dev(uint8_t  * mac);
 int v3_vnet_stat(struct vnet_stat * stats);
 
@@ -117,16 +149,26 @@ struct v3_vnet_dev_ops {
     int (*input)(struct v3_vm_info * vm, 
                 struct v3_vnet_pkt * pkt, 
                 void * dev_data);
+
+    /* return >0 means there are more pkts in the queue to be sent */
+    int (*poll)(struct v3_vm_info * vm,
+               int quote,
+               void * dev_data);
 };
 
 int v3_init_vnet(void);        
 void v3_deinit_vnet(void);
 
 int v3_vnet_add_dev(struct v3_vm_info * info, uint8_t * mac, 
-                   struct v3_vnet_dev_ops * ops,
+                   struct v3_vnet_dev_ops * ops, int quote, int poll_state,
                    void * priv_data);
 int v3_vnet_del_dev(int dev_id);
 
+int v3_vnet_query_header(uint8_t src_mac[6], 
+                        uint8_t dest_mac[6],
+                        int     recv,
+                        struct v3_vnet_header *header);
+
 
 #endif