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staging: hv: Added heartbeat functionality to hv_utils

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Add heartbeat functionality to hv_utils/Hyper-V

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Hank Janssen 2010-05-15 14:39:58 -07:00 committed by Greg Kroah-Hartman
parent 94002c07ff
commit 9153f7b997
4 changed files with 92 additions and 3 deletions
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23
drivers/staging/hv/channel_mgmt.c
View File

@ -33,8 +33,8 @@ struct vmbus_channel_message_table_entry {
void (*messageHandler)(struct vmbus_channel_message_header *msg);
};
#define MAX_MSG_TYPES 2
#define MAX_NUM_DEVICE_CLASSES_SUPPORTED 6
#define MAX_MSG_TYPES 3
#define MAX_NUM_DEVICE_CLASSES_SUPPORTED 7
static const struct hv_guid
gSupportedDeviceClasses[MAX_NUM_DEVICE_CLASSES_SUPPORTED] = {
@ -89,6 +89,14 @@ static const struct hv_guid
0xad, 0xce, 0xe8, 0x0a, 0xb0, 0x17, 0x5c, 0xaf
}
},
/* {57164f39-9115-4e78-ab55-382f3bd5422d} */
/* Heartbeat */
{
.data = {
0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e,
0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d
}
},
};
@ -211,6 +219,17 @@ struct hyperv_service_callback hv_cb_utils[MAX_MSG_TYPES] = {
.callback = chn_cb_negotiate,
.log_msg = "Timesync channel functionality initialized"
},
/* {57164f39-9115-4e78-ab55-382f3bd5422d} */
/* Heartbeat */
{
.msg_type = HV_HEARTBEAT_MSG,
.data = {
0x39, 0x4f, 0x16, 0x57, 0x15, 0x91, 0x78, 0x4e,
0xab, 0x55, 0x38, 0x2f, 0x3b, 0xd5, 0x42, 0x2d
},
.callback = chn_cb_negotiate,
.log_msg = "Heartbeat channel functionality initialized"
},
};
EXPORT_SYMBOL(hv_cb_utils);

64
drivers/staging/hv/hv_utils.c
View File

@ -194,6 +194,62 @@ static void timesync_onchannelcallback(void *context)
DPRINT_EXIT(VMBUS);
}
/*
* Heartbeat functionality.
* Every two seconds, Hyper-V send us a heartbeat request message.
* we respond to this message, and Hyper-V knows we are alive.
*/
static void heartbeat_onchannelcallback(void *context)
{
struct vmbus_channel *channel = context;
u8 *buf;
u32 buflen, recvlen;
u64 requestid;
struct icmsg_hdr *icmsghdrp;
struct heartbeat_msg_data *heartbeat_msg;
DPRINT_ENTER(VMBUS);
buflen = PAGE_SIZE;
buf = kmalloc(buflen, GFP_ATOMIC);
VmbusChannelRecvPacket(channel, buf, buflen, &recvlen, &requestid);
if (recvlen > 0) {
DPRINT_DBG(VMBUS, "heartbeat packet: len=%d, requestid=%lld",
recvlen, requestid);
icmsghdrp = (struct icmsg_hdr *)&buf[
sizeof(struct vmbuspipe_hdr)];
icmsghdrp = (struct icmsg_hdr *)&buf[
sizeof(struct vmbuspipe_hdr)];
if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
prep_negotiate_resp(icmsghdrp, NULL, buf);
} else {
heartbeat_msg = (struct heartbeat_msg_data *)&buf[
sizeof(struct vmbuspipe_hdr) +
sizeof(struct icmsg_hdr)];
DPRINT_DBG(VMBUS, "heartbeat seq = %lld",
heartbeat_msg->seq_num);
heartbeat_msg->seq_num += 1;
}
icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
| ICMSGHDRFLAG_RESPONSE;
VmbusChannelSendPacket(channel, buf,
recvlen, requestid,
VmbusPacketTypeDataInBand, 0);
}
kfree(buf);
DPRINT_EXIT(VMBUS);
}
static int __init init_hyperv_utils(void)
{
@ -207,6 +263,10 @@ static int __init init_hyperv_utils(void)
&timesync_onchannelcallback;
hv_cb_utils[HV_TIMESYNC_MSG].callback = &timesync_onchannelcallback;
hv_cb_utils[HV_HEARTBEAT_MSG].channel->OnChannelCallback =
&heartbeat_onchannelcallback;
hv_cb_utils[HV_HEARTBEAT_MSG].callback = &heartbeat_onchannelcallback;
return 0;
}
@ -221,6 +281,10 @@ static void exit_hyperv_utils(void)
hv_cb_utils[HV_TIMESYNC_MSG].channel->OnChannelCallback =
&chn_cb_negotiate;
hv_cb_utils[HV_TIMESYNC_MSG].callback = &chn_cb_negotiate;
hv_cb_utils[HV_HEARTBEAT_MSG].channel->OnChannelCallback =
&chn_cb_negotiate;
hv_cb_utils[HV_HEARTBEAT_MSG].callback = &chn_cb_negotiate;
}
module_init(init_hyperv_utils);

5
drivers/staging/hv/utils.h
View File

@ -75,6 +75,10 @@ struct shutdown_msg_data {
u8 display_message[2048];
} __attribute__((packed));
struct heartbeat_msg_data {
u64 seq_num;
u32 reserved[8];
} __attribute__((packed));
/* Time Sync IC defs */
#define ICTIMESYNCFLAG_PROBE 0
@ -97,6 +101,7 @@ struct ictimesync_data{
/* Index for each IC struct in array hv_cb_utils[] */
#define HV_SHUTDOWN_MSG 0
#define HV_TIMESYNC_MSG 1
#define HV_HEARTBEAT_MSG 2
struct hyperv_service_callback {
u8 msg_type;

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

@ -40,8 +40,9 @@
* Minor Number Changes when new functionality is added
* to the Linux IC's that is not a bug fix.
*
* 3.1 - Added completed hv_utils driver. Shutdown/Heartbeat/Timesync
*/
#define HV_DRV_VERSION "3.0"
#define HV_DRV_VERSION "3.1"
#endif