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hyperv: Add latest NetVSP versions to auto negotiation

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It auto negotiates the highest NetVSP version supported by both guest and host.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Haiyang Zhang
2014-02-19 15:49:45 -08:00
committed by David S. Miller
parent 86c1a04564
commit a1eabb0178
3 changed files with 70 additions and 10 deletions
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25
drivers/net/hyperv/netvsc.c
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@@ -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 +314,9 @@ 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 +326,14 @@ 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 +343,10 @@ static int netvsc_connect_vsp(struct hv_device *device)
/* Send the ndis version */
memset(init_packet, 0, sizeof(struct nvsp_message));
ndis_version = 0x00050001;
if (net_device->nvsp_version <= NVSP_PROTOCOL_VERSION_4)
ndis_version = 0x00050001;
else
ndis_version = 0x0006001e;
init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_NDIS_VER;
init_packet->msg.v1_msg.