1 files changed, 131 insertions, 0 deletions
diff --git a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/hypervisor-ifs/network.h b/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/hypervisor-ifs/network.h
new file mode 100644
index 0000000000..28cb94618c
--- /dev/null
+++ b/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/hypervisor-ifs/network.h
@@ -0,0 +1,131 @@
+/******************************************************************************
+ * network.h
+ *
+ * ring data structures for buffering messages between hypervisor and
+ * guestos's.  As it stands this is only used for network buffer exchange.
+ *
+ * This file also contains structures and interfaces for the per-domain
+ * routing/filtering tables in the hypervisor.
+ *
+ */
+
+#ifndef __RING_H__
+#define __RING_H__
+
+#include <linux/types.h>
+
+typedef struct tx_entry_st {
+	unsigned long addr;   /* virtual address */
+	unsigned long size;   /* in bytes */
+        int           status; /* per descriptor status. */
+} tx_entry_t;
+
+typedef struct rx_entry_st {
+	unsigned long addr;   /* virtual address */
+	unsigned long size;   /* in bytes */
+        int           status; /* per descriptor status. */
+} rx_entry_t;
+
+#define TX_RING_SIZE 256
+#define RX_RING_SIZE 256
+typedef struct net_ring_st {
+    /*
+     * Guest OS places packets into ring at tx_prod.
+     * Hypervisor removes at tx_cons.
+     * Ring is empty when tx_prod == tx_cons.
+     * Guest OS receives a DOMAIN_EVENT_NET_TX when tx_cons passes tx_event.
+     * Hypervisor may be prodded whenever tx_prod is updated, but this is
+     * only necessary when tx_cons == old_tx_prod (ie. transmitter stalled).
+     */
+    tx_entry_t	*tx_ring;
+    unsigned int tx_prod, tx_cons, tx_event;
+
+    /*
+     * Guest OS places empty buffers into ring at rx_prod.
+     * Hypervisor fills buffers as rx_cons.
+     * Ring is empty when rx_prod == rx_cons.
+     * Guest OS receives a DOMAIN_EVENT_NET_RX when rx_cons passes rx_event.
+     * Hypervisor may be prodded whenever rx_prod is updated, but this is
+     * only necessary when rx_cons == old_rx_prod (ie. receiver stalled).
+     */
+    rx_entry_t	*rx_ring;
+    unsigned int rx_prod, rx_cons, rx_event;
+} net_ring_t;
+
+/* Specify base of per-domain array. Get returned free slot in the array. */
+/*net_ring_t *create_net_vif(int domain);*/
+
+/* Packet routing/filtering code follows:
+ */
+
+#define NETWORK_ACTION_ACCEPT   0
+#define NETWORK_ACTION_COUNT    1
+
+#define NETWORK_PROTO_ANY       0
+#define NETWORK_PROTO_IP        1
+#define NETWORK_PROTO_TCP       2
+#define NETWORK_PROTO_UDP       3
+#define NETWORK_PROTO_ARP       4
+
+typedef struct net_rule_st 
+{
+    u32  src_addr;
+    u32  dst_addr;
+    u16  src_port;
+    u16  dst_port;
+    u32  src_addr_mask;
+    u32  dst_addr_mask;
+    u16  src_port_mask;
+    u16  dst_port_mask;
+    u16  proto;
+    
+    int  src_interface;
+    int  dst_interface;
+    u16  action;
+} net_rule_t;
+
+typedef struct vif_query_st
+{
+    unsigned int    domain;
+    char            *buf;   // where to put the reply -- guest virtual address
+} vif_query_t;
+
+/* Network trap operations and associated structure. 
+ * This presently just handles rule insertion and deletion, but will
+ * evenually have code to add and remove interfaces.
+ */
+
+#define NETWORK_OP_ADDRULE      0
+#define NETWORK_OP_DELETERULE   1
+#define NETWORK_OP_GETRULELIST  2
+#define NETWORK_OP_VIFQUERY     3
+
+typedef struct network_op_st 
+{
+    unsigned long cmd;
+    union
+    {
+        net_rule_t net_rule;
+        vif_query_t vif_query;
+    }
+    u;
+} network_op_t;
+
+typedef struct net_rule_ent_st
+{
+    net_rule_t r;
+    struct net_rule_ent_st *next;
+} net_rule_ent_t;
+
+/* Drop a new rule down to the network tables. */
+int add_net_rule(net_rule_t *rule);
+
+
+/* Descriptor status values:
+ */
+
+#define RING_STATUS_OK               0  // Everything is gravy.
+#define RING_STATUS_ERR_CFU         -1  // Copy from user problems.
+#define RING_STATUS_BAD_PAGE        -2  // What they gave us was pure evil.
+
+#endif