UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

hyperv: Change the receive buffer size for legacy hosts 

Due to a bug in the Hyper-V host verion 2008R2, we need to use a slightly smaller
receive buffer size, otherwise the buffer will not be accepted by the legacy hosts.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Haiyang Zhang 2014-03-09 16:10:59 -07:00 committed by David S. Miller
parent 3772ab1d37
commit 99d3016de4
2 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/hyperv/hyperv_net.h
View File

@ -513,6 +513,7 @@ struct nvsp_message {
#define NETVSC_MTU 65536
#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */
#define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024*1024*15) /* 15MB */
#define NETVSC_RECEIVE_BUFFER_ID 0xcafe

6
drivers/net/hyperv/netvsc.c
View File

@ -365,6 +365,11 @@ static int netvsc_connect_vsp(struct hv_device *device)
goto cleanup;
/* Post the big receive buffer to NetVSP */
if (net_device->nvsp_version <= NVSP_PROTOCOL_VERSION_2)
net_device->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE_LEGACY;
else
net_device->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE;
ret = netvsc_init_recv_buf(device);
cleanup:
@ -898,7 +903,6 @@ int netvsc_device_add(struct hv_device *device, void *additional_info)
ndev = net_device->ndev;
/* Initialize the NetVSC channel extension */
net_device->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE;
spin_lock_init(&net_device->recv_pkt_list_lock);
INIT_LIST_HEAD(&net_device->recv_pkt_list);