It auto negotiates the highest NetVSP version supported by both guest and host.
Signed-off-by: Haiyang Zhang
Reviewed-by: K. Y. Srinivasan
---
drivers/net/hyperv/hyperv_net.h | 53 +++
drivers/net/hyperv/netvsc.c | 26 --
drivers/net/hyperv/netvsc_drv.c |2 +-
3 files changed, 71 insertions(+), 10 deletions(-)
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 01a16ea..39fc230 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -139,6 +139,8 @@ int rndis_filter_set_device_mac(struct hv_device *hdev,
char *mac);
#define NVSP_PROTOCOL_VERSION_12
#define NVSP_PROTOCOL_VERSION_20x30002
+#define NVSP_PROTOCOL_VERSION_40x4
+#define NVSP_PROTOCOL_VERSION_50x5
enum {
NVSP_MSG_TYPE_NONE = 0,
@@ -193,6 +195,23 @@ enum {
NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
+
+ NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
+
+ /* Version 4 messages */
+ NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
+ NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
+ NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
+
+ NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
+
+ /* Version 5 messages */
+ NVSP_MSG5_TYPE_OID_QUERY_EX,
+ NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
+ NVSP_MSG5_TYPE_SUBCHANNEL,
+ NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
+
+ NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
};
enum {
@@ -447,10 +466,44 @@ union nvsp_2_message_uber {
struct nvsp_2_free_rxbuf free_rxbuf;
} __packed;
+enum nvsp_subchannel_operation {
+ NVSP_SUBCHANNEL_NONE = 0,
+ NVSP_SUBCHANNEL_ALLOCATE,
+ NVSP_SUBCHANNEL_MAX
+};
+
+struct nvsp_5_subchannel_request {
+ u32 op;
+ u32 num_subchannels;
+} __packed;
+
+struct nvsp_5_subchannel_complete {
+ u32 status;
+ u32 num_subchannels; /* Actual number of subchannels allocated */
+} __packed;
+
+struct nvsp_5_send_indirect_table {
+ /* The number of entries in the send indirection table */
+ u32 count;
+
+ /* The offset of the send indireciton table from top of this struct.
+* The send indirection table tells which channel to put the send
+* traffic on. Each entry is a channel number.
+*/
+ u32 offset;
+} __packed;
+
+union nvsp_5_message_uber {
+ struct nvsp_5_subchannel_request subchn_req;
+ struct nvsp_5_subchannel_complete subchn_comp;
+ struct nvsp_5_send_indirect_table send_table;
+} __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_5_message_uber v5_msg;
} __packed;
/* ALL Messages */
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 9a0e9c6..fc2941c 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -290,7 +290,7 @@ static int negotiate_nvsp_ver(struct hv_device *device,
NVSP_STAT_SUCCESS)
return -EINVAL;
- if (nvsp_ver != NVSP_PROTOCOL_VERSION_2)
+ if (nvsp_ver == NVSP_PROTOCOL_VERSION_1)
return 0;
/* NVSPv2 only: Send NDIS config */
@@ -314,6 +314,10 @@ static int netvsc_connect_vsp(struct hv_device *device)
struct nvsp_message *init_packet;
int ndis_version;
struct net_device *ndev;
+ u32 ver_list[] = {NVSP_PROTOCOL_VERSION_1, NVSP_PROTOCOL_VERSION_2,
+ NVSP_PROTOCOL_VERSION_4, NVSP_PROTOCOL_VERSION_5};
+ int i, num_ver = 4; /* number of different NVSP versions */
+
net_device = get_outbound_net_device(device);
if (!net_device)
@@ -323,13 +327,14 @@ static int netvsc_connect_vsp(struct hv_device *device)
init_packet = &net_device->channel_init_pkt;
/* Negotiate the latest NVSP protocol supported */
- if (negotiate_nvsp_ver(device, net_device, init_packet,
- NVSP_PROTOCOL_VERSION_2) == 0) {
- net_device->nvsp_version = NVSP_PROTOCOL_VERSION_2;
- } else if (negotiate_nvsp_ver(device, net_device, init_packet,
- NVSP_PROTOCOL_VERSION_1) == 0) {
- net_device->nvsp_version = NVSP_PROTOCOL_VERSION_1;
- } else {
+ for (i = num_ver - 1; i >= 0; i--)
+ if (negotiate_nvsp_ver(device, net_device, init_packet,
+ ver_list[i]) == 0) {
+ net_device->nvsp_version = ver_list[i];
+ break;
+ }
+
+ if (i < 0) {
ret = -EPROTO;
goto cleanup;
}
@@ -339,7 +344,10 @@ static int netvsc_connect_vsp(struct hv_device *device)
/* Send the ndis version */
mems
