1 files changed, 90 insertions, 11 deletions

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 68ed7f7e1fc9..e73b852156b1 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -122,12 +122,53 @@
 #define REG_U32 4
 #define REG_U64 8
 
+/*
+ * As we look at expanding the KVP functionality to include
+ * IP injection functionality, we need to maintain binary
+ * compatibility with older daemons.
+ *
+ * The KVP opcodes are defined by the host and it was unfortunate
+ * that I chose to treat the registration operation as part of the
+ * KVP operations defined by the host.
+ * Here is the level of compatibility
+ * (between the user level daemon and the kernel KVP driver) that we
+ * will implement:
+ *
+ * An older daemon will always be supported on a newer driver.
+ * A given user level daemon will require a minimal version of the
+ * kernel driver.
+ * If we cannot handle the version differences, we will fail gracefully
+ * (this can happen when we have a user level daemon that is more
+ * advanced than the KVP driver.
+ *
+ * We will use values used in this handshake for determining if we have
+ * workable user level daemon and the kernel driver. We begin by taking the
+ * registration opcode out of the KVP opcode namespace. We will however,
+ * maintain compatibility with the existing user-level daemon code.
+ */
+
+/*
+ * Daemon code not supporting IP injection (legacy daemon).
+ */
+
+#define KVP_OP_REGISTER 4
+
+/*
+ * Daemon code supporting IP injection.
+ * The KVP opcode field is used to communicate the
+ * registration information; so define a namespace that
+ * will be distinct from the host defined KVP opcode.
+ */
+
+#define KVP_OP_REGISTER1 100
+
 enum hv_kvp_exchg_op {
         KVP_OP_GET = 0,
         KVP_OP_SET,
         KVP_OP_DELETE,
         KVP_OP_ENUMERATE,
-        KVP_OP_REGISTER,
+        KVP_OP_GET_IP_INFO,
+        KVP_OP_SET_IP_INFO,
         KVP_OP_COUNT /* Number of operations, must be last. */
 };
 
@@ -140,6 +181,39 @@ enum hv_kvp_exchg_pool {
         KVP_POOL_COUNT /* Number of pools, must be last. */
 };
 
+/*
+ * Some Hyper-V status codes.
+ */
+
+#define HV_S_OK                         0x00000000
+#define HV_E_FAIL                       0x80004005
+#define HV_S_CONT                       0x80070103
+#define HV_ERROR_NOT_SUPPORTED          0x80070032
+#define HV_ERROR_MACHINE_LOCKED         0x800704F7
+#define HV_ERROR_DEVICE_NOT_CONNECTED   0x8007048F
+#define HV_INVALIDARG                   0x80070057
+#define HV_GUID_NOTFOUND                0x80041002
+
+#define ADDR_FAMILY_NONE        0x00
+#define ADDR_FAMILY_IPV4        0x01
+#define ADDR_FAMILY_IPV6        0x02
+
+#define MAX_ADAPTER_ID_SIZE     128
+#define MAX_IP_ADDR_SIZE        1024
+#define MAX_GATEWAY_SIZE        512
+
+
+struct hv_kvp_ipaddr_value {
+        __u16   adapter_id[MAX_ADAPTER_ID_SIZE];
+        __u8    addr_family;
+        __u8    dhcp_enabled;
+        __u16   ip_addr[MAX_IP_ADDR_SIZE];
+        __u16   sub_net[MAX_IP_ADDR_SIZE];
+        __u16   gate_way[MAX_GATEWAY_SIZE];
+        __u16   dns_addr[MAX_IP_ADDR_SIZE];
+} __attribute__((packed));
+
+
 struct hv_kvp_hdr {
         __u8 operation;
         __u8 pool;
@@ -181,16 +255,26 @@ struct hv_kvp_register {
 };
 
 struct hv_kvp_msg {
-        struct hv_kvp_hdr       kvp_hdr;
+        union {
+                struct hv_kvp_hdr       kvp_hdr;
+                int error;
+        };
         union {
                 struct hv_kvp_msg_get           kvp_get;
                 struct hv_kvp_msg_set           kvp_set;
                 struct hv_kvp_msg_delete        kvp_delete;
                 struct hv_kvp_msg_enumerate     kvp_enum_data;
+                struct hv_kvp_ipaddr_value      kvp_ip_val;
                 struct hv_kvp_register          kvp_register;
         } body;
 } __attribute__((packed));
 
+struct hv_kvp_ip_msg {
+        __u8 operation;
+        __u8 pool;
+        struct hv_kvp_ipaddr_value      kvp_ip_val;
+} __attribute__((packed));
+
 #ifdef __KERNEL__
 #include <linux/scatterlist.h>
 #include <linux/list.h>
@@ -405,7 +489,7 @@ struct vmtransfer_page_range {
 struct vmtransfer_page_packet_header {
         struct vmpacket_descriptor d;
         u16 xfer_pageset_id;
-        bool sender_owns_set;
+        u8  sender_owns_set;
         u8 reserved;
         u32 range_cnt;
         struct vmtransfer_page_range ranges[1];
@@ -559,7 +643,7 @@ struct vmbus_channel_query_vmbus_version {
 /* VMBus Version Supported parameters */
 struct vmbus_channel_version_supported {
         struct vmbus_channel_message_header header;
-        bool version_supported;
+        u8 version_supported;
 } __packed;
 
 /* Offer Channel parameters */
@@ -568,7 +652,7 @@ struct vmbus_channel_offer_channel {
         struct vmbus_channel_offer offer;
         u32 child_relid;
         u8 monitorid;
-        bool monitor_allocated;
+        u8 monitor_allocated;
 } __packed;
 
 /* Rescind Offer parameters */
@@ -704,7 +788,7 @@ struct vmbus_channel_initiate_contact {
 
 struct vmbus_channel_version_response {
         struct vmbus_channel_message_header header;
-        bool version_supported;
+        u8 version_supported;
 } __packed;
 
 enum vmbus_channel_state {
@@ -977,11 +1061,6 @@ void vmbus_driver_unregister(struct hv_driver *hv_driver);
 #define ICMSGHDRFLAG_REQUEST            2
 #define ICMSGHDRFLAG_RESPONSE           4
 
-#define HV_S_OK                         0x00000000
-#define HV_E_FAIL                       0x80004005
-#define HV_S_CONT                       0x80070103
-#define HV_ERROR_NOT_SUPPORTED          0x80070032
-#define HV_ERROR_MACHINE_LOCKED         0x800704F7
 
 /*
  * While we want to handle util services as regular devices,