leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Staging: hv: Use completion abstraction in struct netvsc_device

Browse Source 
Use completion abstraction in struct netvsc_device instead of
struct wait_queue_head_t to synchronize.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
K. Y. Srinivasan 2011-05-10 07:55:41 -07:00 committed by Greg Kroah-Hartman
parent bc1bf5dd63
commit 35abb21ace
2 changed files with 14 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/staging/hv/netvsc.c
View File

@ -213,6 +213,7 @@ static int netvsc_destroy_recv_buf(struct netvsc_device *net_device)
static int netvsc_init_recv_buf(struct hv_device *device)
{
int ret = 0;
int t;
struct netvsc_device *net_device;
struct nvsp_message *init_packet;
@ -260,7 +261,6 @@ static int netvsc_init_recv_buf(struct hv_device *device)
send_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID;
/* Send the gpadl notification request */
net_device->wait_condition = 0;
ret = vmbus_sendpacket(device->channel, init_packet,
sizeof(struct nvsp_message),
(unsigned long)init_packet,
@ -272,10 +272,8 @@ static int netvsc_init_recv_buf(struct hv_device *device)
goto cleanup;
}
wait_event_timeout(net_device->channel_init_wait,
net_device->wait_condition,
msecs_to_jiffies(1000));
BUG_ON(net_device->wait_condition == 0);
t = wait_for_completion_timeout(&net_device->channel_init_wait, HZ);
BUG_ON(t == 0);
/* Check the response */
@ -394,6 +392,7 @@ static int netvsc_destroy_send_buf(struct netvsc_device *net_device)
static int netvsc_init_send_buf(struct hv_device *device)
{
int ret = 0;
int t;
struct netvsc_device *net_device;
struct nvsp_message *init_packet;
@ -443,7 +442,6 @@ static int netvsc_init_send_buf(struct hv_device *device)
NETVSC_SEND_BUFFER_ID;
/* Send the gpadl notification request */
net_device->wait_condition = 0;
ret = vmbus_sendpacket(device->channel, init_packet,
sizeof(struct nvsp_message),
(unsigned long)init_packet,
@ -455,10 +453,9 @@ static int netvsc_init_send_buf(struct hv_device *device)
goto cleanup;
}
wait_event_timeout(net_device->channel_init_wait,
net_device->wait_condition,
msecs_to_jiffies(1000));
BUG_ON(net_device->wait_condition == 0);
t = wait_for_completion_timeout(&net_device->channel_init_wait, HZ);
BUG_ON(t == 0);
/* Check the response */
if (init_packet->msg.v1_msg.
@ -487,7 +484,7 @@ exit:
static int netvsc_connect_vsp(struct hv_device *device)
{
int ret;
int ret, t;
struct netvsc_device *net_device;
struct nvsp_message *init_packet;
int ndis_version;
@ -509,7 +506,6 @@ static int netvsc_connect_vsp(struct hv_device *device)
NVSP_MAX_PROTOCOL_VERSION;
/* Send the init request */
net_device->wait_condition = 0;
ret = vmbus_sendpacket(device->channel, init_packet,
sizeof(struct nvsp_message),
(unsigned long)init_packet,
@ -519,10 +515,9 @@ static int netvsc_connect_vsp(struct hv_device *device)
if (ret != 0)
goto cleanup;
wait_event_timeout(net_device->channel_init_wait,
net_device->wait_condition,
msecs_to_jiffies(1000));
if (net_device->wait_condition == 0) {
t = wait_for_completion_timeout(&net_device->channel_init_wait, HZ);
if (t == 0) {
ret = -ETIMEDOUT;
goto cleanup;
}
@ -647,8 +642,7 @@ static void netvsc_send_completion(struct hv_device *device,
/* Copy the response back */
memcpy(&net_device->channel_init_pkt, nvsp_packet,
sizeof(struct nvsp_message));
net_device->wait_condition = 1;
wake_up(&net_device->channel_init_wait);
complete(&net_device->channel_init_wait);
} else if (nvsp_packet->hdr.msg_type ==
NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE) {
/* Get the send context */
@ -1123,7 +1117,7 @@ int netvsc_device_add(struct hv_device *device, void *additional_info)
list_add_tail(&packet->list_ent,
&net_device->recv_pkt_list);
}
init_waitqueue_head(&net_device->channel_init_wait);
init_completion(&net_device->channel_init_wait);
/* Open the channel */
ret = vmbus_open(device->channel, net_driver->ring_buf_size,

3
drivers/staging/hv/netvsc.h
View File

@ -318,8 +318,7 @@ struct netvsc_device {
struct nvsp_1_receive_buffer_section *recv_section;
/* Used for NetVSP initialization protocol */
int wait_condition;
wait_queue_head_t channel_init_wait;
struct completion channel_init_wait;
struct nvsp_message channel_init_pkt;
struct nvsp_message revoke_packet;