hv_netvsc: Add NetVSP v6 and v6.1 into version negotiation

This patch adds the NetVSP v6 and 6.1 message structures, and includes
these versions into NetVSC/NetVSP version negotiation process.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 166 insertions, 1 deletions

diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 960f06141472..6ebe39a3dde6 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -237,6 +237,8 @@ void netvsc_switch_datapath(struct net_device *nv_dev, bool vf);
 #define NVSP_PROTOCOL_VERSION_2         0x30002
 #define NVSP_PROTOCOL_VERSION_4         0x40000
 #define NVSP_PROTOCOL_VERSION_5         0x50000
+#define NVSP_PROTOCOL_VERSION_6         0x60000
+#define NVSP_PROTOCOL_VERSION_61        0x60001
 
 enum {
         NVSP_MSG_TYPE_NONE = 0,
@@ -308,6 +310,12 @@ enum {
         NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
 
         NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
+
+        /* Version 6 messages */
+        NVSP_MSG6_TYPE_PD_API,
+        NVSP_MSG6_TYPE_PD_POST_BATCH,
+
+        NVSP_MSG6_MAX = NVSP_MSG6_TYPE_PD_POST_BATCH
 };
 
 enum {
@@ -619,12 +627,168 @@ union nvsp_5_message_uber {
         struct nvsp_5_send_indirect_table send_table;
 } __packed;
 
+enum nvsp_6_pd_api_op {
+        PD_API_OP_CONFIG = 1,
+        PD_API_OP_SW_DATAPATH, /* Switch Datapath */
+        PD_API_OP_OPEN_PROVIDER,
+        PD_API_OP_CLOSE_PROVIDER,
+        PD_API_OP_CREATE_QUEUE,
+        PD_API_OP_FLUSH_QUEUE,
+        PD_API_OP_FREE_QUEUE,
+        PD_API_OP_ALLOC_COM_BUF, /* Allocate Common Buffer */
+        PD_API_OP_FREE_COM_BUF, /* Free Common Buffer */
+        PD_API_OP_MAX
+};
+
+struct grp_affinity {
+        u64 mask;
+        u16 grp;
+        u16 reserved[3];
+} __packed;
+
+struct nvsp_6_pd_api_req {
+        u32 op;
+
+        union {
+                /* MMIO information is sent from the VM to VSP */
+                struct __packed {
+                        u64 mmio_pa; /* MMIO Physical Address */
+                        u32 mmio_len;
+
+                        /* Number of PD queues a VM can support */
+                        u16 num_subchn;
+                } config;
+
+                /* Switch Datapath */
+                struct __packed {
+                        /* Host Datapath Is PacketDirect */
+                        u8 host_dpath_is_pd;
+
+                        /* Guest PacketDirect Is Enabled */
+                        u8 guest_pd_enabled;
+                } sw_dpath;
+
+                /* Open Provider*/
+                struct __packed {
+                        u32 prov_id; /* Provider id */
+                        u32 flag;
+                } open_prov;
+
+                /* Close Provider */
+                struct __packed {
+                        u32 prov_id;
+                } cls_prov;
+
+                /* Create Queue*/
+                struct __packed {
+                        u32 prov_id;
+                        u16 q_id;
+                        u16 q_size;
+                        u8 is_recv_q;
+                        u8 is_rss_q;
+                        u32 recv_data_len;
+                        struct grp_affinity affy;
+                } cr_q;
+
+                /* Delete Queue*/
+                struct __packed {
+                        u32 prov_id;
+                        u16 q_id;
+                } del_q;
+
+                /* Flush Queue */
+                struct __packed {
+                        u32 prov_id;
+                        u16 q_id;
+                } flush_q;
+
+                /* Allocate Common Buffer */
+                struct __packed {
+                        u32 len;
+                        u32 pf_node; /* Preferred Node */
+                        u16 region_id;
+                } alloc_com_buf;
+
+                /* Free Common Buffer */
+                struct __packed {
+                        u32 len;
+                        u64 pa; /* Physical Address */
+                        u32 pf_node; /* Preferred Node */
+                        u16 region_id;
+                        u8 cache_type;
+                } free_com_buf;
+        } __packed;
+} __packed;
+
+struct nvsp_6_pd_api_comp {
+        u32 op;
+        u32 status;
+
+        union {
+                struct __packed {
+                        /* actual number of PD queues allocated to the VM */
+                        u16 num_pd_q;
+
+                        /* Num Receive Rss PD Queues */
+                        u8 num_rss_q;
+
+                        u8 is_supported; /* Is supported by VSP */
+                        u8 is_enabled; /* Is enabled by VSP */
+                } config;
+
+                /* Open Provider */
+                struct __packed {
+                        u32 prov_id;
+                } open_prov;
+
+                /* Create Queue */
+                struct __packed {
+                        u32 prov_id;
+                        u16 q_id;
+                        u16 q_size;
+                        u32 recv_data_len;
+                        struct grp_affinity affy;
+                } cr_q;
+
+                /* Allocate Common Buffer */
+                struct __packed {
+                        u64 pa; /* Physical Address */
+                        u32 len;
+                        u32 pf_node; /* Preferred Node */
+                        u16 region_id;
+                        u8 cache_type;
+                } alloc_com_buf;
+        } __packed;
+} __packed;
+
+struct nvsp_6_pd_buf {
+        u32 region_offset;
+        u16 region_id;
+        u16 is_partial:1;
+        u16 reserved:15;
+} __packed;
+
+struct nvsp_6_pd_batch_msg {
+        struct nvsp_message_header hdr;
+        u16 count;
+        u16 guest2host:1;
+        u16 is_recv:1;
+        u16 reserved:14;
+        struct nvsp_6_pd_buf pd_buf[0];
+} __packed;
+
+union nvsp_6_message_uber {
+        struct nvsp_6_pd_api_req pd_req;
+        struct nvsp_6_pd_api_comp pd_comp;
+} __packed;
+
 union nvsp_all_messages {
         union nvsp_message_init_uber init_msg;
         union nvsp_1_message_uber v1_msg;
         union nvsp_2_message_uber v2_msg;
         union nvsp_4_message_uber v4_msg;
         union nvsp_5_message_uber v5_msg;
+        union nvsp_6_message_uber v6_msg;
 } __packed;
 
 /* ALL Messages */
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 04f611e6f678..e7308958b7a9 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -525,7 +525,8 @@ static int netvsc_connect_vsp(struct hv_device *device,
         struct net_device *ndev = hv_get_drvdata(device);
         static const u32 ver_list[] = {
                 NVSP_PROTOCOL_VERSION_1, NVSP_PROTOCOL_VERSION_2,
-                NVSP_PROTOCOL_VERSION_4, NVSP_PROTOCOL_VERSION_5
+                NVSP_PROTOCOL_VERSION_4, NVSP_PROTOCOL_VERSION_5,
+                NVSP_PROTOCOL_VERSION_6, NVSP_PROTOCOL_VERSION_61
         };
         struct nvsp_message *init_packet;
         int ndis_version, i, ret;