Ejemplo n.º 1
0
void hv_kvp_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u32 recvlen;
	u64 requestid;

	struct hv_kvp_msg *kvp_msg;

	struct icmsg_hdr *icmsghdrp;
	struct icmsg_negotiate *negop = NULL;
	int util_fw_version;
	int kvp_srv_version;

	if (kvp_transaction.active) {
		/*
		 * We will defer processing this callback once
		 * the current transaction is complete.
		 */
		kvp_transaction.kvp_context = context;
		return;
	}

	vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE * 4, &recvlen,
			 &requestid);

	if (recvlen > 0) {
		icmsghdrp = (struct icmsg_hdr *)&recv_buffer[
			sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			/*
			 * Based on the host, select appropriate
			 * framework and service versions we will
			 * negotiate.
			 */
			switch (vmbus_proto_version) {
			case (VERSION_WS2008):
				util_fw_version = UTIL_WS2K8_FW_VERSION;
				kvp_srv_version = WS2008_SRV_VERSION;
				break;
			case (VERSION_WIN7):
				util_fw_version = UTIL_FW_VERSION;
				kvp_srv_version = WIN7_SRV_VERSION;
				break;
			default:
				util_fw_version = UTIL_FW_VERSION;
				kvp_srv_version = WIN8_SRV_VERSION;
			}
			vmbus_prep_negotiate_resp(icmsghdrp, negop,
				 recv_buffer, util_fw_version,
				 kvp_srv_version);

		} else {
			kvp_msg = (struct hv_kvp_msg *)&recv_buffer[
				sizeof(struct vmbuspipe_hdr) +
				sizeof(struct icmsg_hdr)];

			/*
			 * Stash away this global state for completing the
			 * transaction; note transactions are serialized.
			 */

			kvp_transaction.recv_len = recvlen;
			kvp_transaction.recv_channel = channel;
			kvp_transaction.recv_req_id = requestid;
			kvp_transaction.active = true;
			kvp_transaction.kvp_msg = kvp_msg;

			/*
			 * Get the information from the
			 * user-mode component.
			 * component. This transaction will be
			 * completed when we get the value from
			 * the user-mode component.
			 * Set a timeout to deal with
			 * user-mode not responding.
			 */
			schedule_work(&kvp_sendkey_work);
			schedule_delayed_work(&kvp_work, 5*HZ);

			return;

		}

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		vmbus_sendpacket(channel, recv_buffer,
				       recvlen, requestid,
				       VM_PKT_DATA_INBAND, 0);
	}

}
Ejemplo n.º 2
0
void hv_vss_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u32 recvlen;
	u64 requestid;
	struct hv_vss_msg *vss_msg;


	struct icmsg_hdr *icmsghdrp;
	struct icmsg_negotiate *negop = NULL;

	if (vss_transaction.state > HVUTIL_READY)
		return;

	vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE * 2, &recvlen,
			 &requestid);

	if (recvlen > 0) {
		icmsghdrp = (struct icmsg_hdr *)&recv_buffer[
			sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			vmbus_prep_negotiate_resp(icmsghdrp, negop,
				 recv_buffer, UTIL_FW_VERSION,
				 VSS_VERSION);
		} else {
			vss_msg = (struct hv_vss_msg *)&recv_buffer[
				sizeof(struct vmbuspipe_hdr) +
				sizeof(struct icmsg_hdr)];

			/*
			 * Stash away this global state for completing the
			 * transaction; note transactions are serialized.
			 */

			vss_transaction.recv_len = recvlen;
			vss_transaction.recv_req_id = requestid;
			vss_transaction.msg = (struct hv_vss_msg *)vss_msg;

			switch (vss_msg->vss_hdr.operation) {
				/*
				 * Initiate a "freeze/thaw"
				 * operation in the guest.
				 * We respond to the host once
				 * the operation is complete.
				 *
				 * We send the message to the
				 * user space daemon and the
				 * operation is performed in
				 * the daemon.
				 */
			case VSS_OP_FREEZE:
			case VSS_OP_THAW:
				if (vss_transaction.state < HVUTIL_READY) {
					/* Userspace is not registered yet */
					vss_respond_to_host(HV_E_FAIL);
					return;
				}
				vss_transaction.state = HVUTIL_HOSTMSG_RECEIVED;
				schedule_work(&vss_send_op_work);
				schedule_delayed_work(&vss_timeout_work,
						      VSS_USERSPACE_TIMEOUT);
				return;

			case VSS_OP_HOT_BACKUP:
				vss_msg->vss_cf.flags =
					 VSS_HBU_NO_AUTO_RECOVERY;
				vss_respond_to_host(0);
				return;

			case VSS_OP_GET_DM_INFO:
				vss_msg->dm_info.flags = 0;
				vss_respond_to_host(0);
				return;

			default:
				vss_respond_to_host(0);
				return;

			}

		}

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		vmbus_sendpacket(channel, recv_buffer,
				       recvlen, requestid,
				       VM_PKT_DATA_INBAND, 0);
	}

}
Ejemplo n.º 3
0
void hv_kvp_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u32 recvlen;
	u64 requestid;

	struct hv_kvp_msg *kvp_msg;
	struct hv_kvp_msg_enumerate *kvp_data;

	struct icmsg_hdr *icmsghdrp;
	struct icmsg_negotiate *negop = NULL;


	vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE, &recvlen, &requestid);

	if (recvlen > 0) {
		icmsghdrp = (struct icmsg_hdr *)&recv_buffer[
			sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			vmbus_prep_negotiate_resp(icmsghdrp, negop, recv_buffer);
		} else {
			kvp_msg = (struct hv_kvp_msg *)&recv_buffer[
				sizeof(struct vmbuspipe_hdr) +
				sizeof(struct icmsg_hdr)];

			kvp_data = &kvp_msg->kvp_data;

			/*
			 * We only support the "get" operation on
			 * "KVP_POOL_AUTO" pool.
			 */

			if ((kvp_msg->kvp_hdr.pool != KVP_POOL_AUTO) ||
				(kvp_msg->kvp_hdr.operation !=
				KVP_OP_ENUMERATE)) {
				icmsghdrp->status = HV_E_FAIL;
				goto callback_done;
			}

			/*
			 * Stash away this global state for completing the
			 * transaction; note transactions are serialized.
			 */
			kvp_transaction.recv_len = recvlen;
			kvp_transaction.recv_channel = channel;
			kvp_transaction.recv_req_id = requestid;
			kvp_transaction.active = true;
			kvp_transaction.index = kvp_data->index;

			/*
			 * Get the information from the
			 * user-mode component.
			 * component. This transaction will be
			 * completed when we get the value from
			 * the user-mode component.
			 * Set a timeout to deal with
			 * user-mode not responding.
			 */
			schedule_work(&kvp_sendkey_work);
			schedule_delayed_work(&kvp_work, 5*HZ);

			return;

		}

callback_done:

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		vmbus_sendpacket(channel, recv_buffer,
				       recvlen, requestid,
				       VM_PKT_DATA_INBAND, 0);
	}

}
Ejemplo n.º 4
0
static void shutdown_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u8 *buf;
	u32 buflen, recvlen;
	u64 requestid;
	u8  execute_shutdown = false;

	struct shutdown_msg_data *shutdown_msg;

	struct icmsg_hdr *icmsghdrp;
	struct icmsg_negotiate *negop = NULL;

	buflen = PAGE_SIZE;
	buf = kmalloc(buflen, GFP_ATOMIC);

	vmbus_recvpacket(channel, buf, buflen, &recvlen, &requestid);

	if (recvlen > 0) {
		DPRINT_DBG(VMBUS, "shutdown packet: len=%d, requestid=%lld",
			   recvlen, requestid);

		icmsghdrp = (struct icmsg_hdr *)&buf[
			sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			prep_negotiate_resp(icmsghdrp, negop, buf);
		} else {
			shutdown_msg = (struct shutdown_msg_data *)&buf[
				sizeof(struct vmbuspipe_hdr) +
				sizeof(struct icmsg_hdr)];

			switch (shutdown_msg->flags) {
			case 0:
			case 1:
				icmsghdrp->status = HV_S_OK;
				execute_shutdown = true;

				DPRINT_INFO(VMBUS, "Shutdown request received -"
					    " gracefull shutdown initiated");
				break;
			default:
				icmsghdrp->status = HV_E_FAIL;
				execute_shutdown = false;

				DPRINT_INFO(VMBUS, "Shutdown request received -"
					    " Invalid request");
				break;
			};
		}

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		vmbus_sendpacket(channel, buf,
				       recvlen, requestid,
				       VmbusPacketTypeDataInBand, 0);
	}

	kfree(buf);

	if (execute_shutdown == true)
		orderly_poweroff(false);
}
Ejemplo n.º 5
0
static void shutdown_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u32 recvlen;
	u64 requestid;
	u8  execute_shutdown = false;
	u8  *shut_txf_buf = util_shutdown.recv_buffer;

	struct shutdown_msg_data *shutdown_msg;

	struct icmsg_hdr *icmsghdrp;
	struct icmsg_negotiate *negop = NULL;

	vmbus_recvpacket(channel, shut_txf_buf,
			 PAGE_SIZE, &recvlen, &requestid);

	if (recvlen > 0) {
		icmsghdrp = (struct icmsg_hdr *)&shut_txf_buf[
			sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			vmbus_prep_negotiate_resp(icmsghdrp, negop,
					shut_txf_buf, util_fw_version,
					sd_srv_version);

		} else {
			shutdown_msg =
				(struct shutdown_msg_data *)&shut_txf_buf[
					sizeof(struct vmbuspipe_hdr) +
					sizeof(struct icmsg_hdr)];

			switch (shutdown_msg->flags) {
			case 0:
			case 1:
				icmsghdrp->status = HV_S_OK;
				execute_shutdown = true;

				pr_info("Shutdown request received -"
					    " graceful shutdown initiated\n");
				break;
			default:
				icmsghdrp->status = HV_E_FAIL;
				execute_shutdown = false;

				pr_info("Shutdown request received -"
					    " Invalid request\n");
				break;
			}
		}

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		vmbus_sendpacket(channel, shut_txf_buf,
				       recvlen, requestid,
				       VM_PKT_DATA_INBAND, 0);
	}

	if (execute_shutdown == true)
		schedule_work(&shutdown_work);
}
Ejemplo n.º 6
0
void hv_kvp_onchannelcallback(void *context)
{
    struct vmbus_channel *channel = context;
    u32 recvlen;
    u64 requestid;

    struct hv_kvp_msg *kvp_msg;

    struct icmsg_hdr *icmsghdrp;
    struct icmsg_negotiate *negop = NULL;
    int util_fw_version;
    int kvp_srv_version;
    static enum {NEGO_NOT_STARTED,
                 NEGO_IN_PROGRESS,
                 NEGO_FINISHED
                } host_negotiatied = NEGO_NOT_STARTED;

    if (host_negotiatied == NEGO_NOT_STARTED &&
            kvp_transaction.state < HVUTIL_READY) {
        /*
         * If userspace daemon is not connected and host is asking
         * us to negotiate we need to delay to not lose messages.
         * This is important for Failover IP setting.
         */
        host_negotiatied = NEGO_IN_PROGRESS;
        schedule_delayed_work(&kvp_host_handshake_work,
                              HV_UTIL_NEGO_TIMEOUT * HZ);
        return;
    }
    if (kvp_transaction.state > HVUTIL_READY)
        return;

    vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE * 4, &recvlen,
                     &requestid);

    if (recvlen > 0) {
        icmsghdrp = (struct icmsg_hdr *)&recv_buffer[
                        sizeof(struct vmbuspipe_hdr)];

        if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
            /*
             * Based on the host, select appropriate
             * framework and service versions we will
             * negotiate.
             */
            switch (vmbus_proto_version) {
            case (VERSION_WS2008):
                util_fw_version = UTIL_WS2K8_FW_VERSION;
                kvp_srv_version = WS2008_SRV_VERSION;
                break;
            case (VERSION_WIN7):
                util_fw_version = UTIL_FW_VERSION;
                kvp_srv_version = WIN7_SRV_VERSION;
                break;
            default:
                util_fw_version = UTIL_FW_VERSION;
                kvp_srv_version = WIN8_SRV_VERSION;
            }
            vmbus_prep_negotiate_resp(icmsghdrp, negop,
                                      recv_buffer, util_fw_version,
                                      kvp_srv_version);

        } else {
            kvp_msg = (struct hv_kvp_msg *)&recv_buffer[
                          sizeof(struct vmbuspipe_hdr) +
                          sizeof(struct icmsg_hdr)];

            /*
             * Stash away this global state for completing the
             * transaction; note transactions are serialized.
             */

            kvp_transaction.recv_len = recvlen;
            kvp_transaction.recv_req_id = requestid;
            kvp_transaction.kvp_msg = kvp_msg;

            if (kvp_transaction.state < HVUTIL_READY) {
                /* Userspace is not registered yet */
                kvp_respond_to_host(NULL, HV_E_FAIL);
                return;
            }
            kvp_transaction.state = HVUTIL_HOSTMSG_RECEIVED;

            /*
             * Get the information from the
             * user-mode component.
             * component. This transaction will be
             * completed when we get the value from
             * the user-mode component.
             * Set a timeout to deal with
             * user-mode not responding.
             */
            schedule_work(&kvp_sendkey_work);
            schedule_delayed_work(&kvp_timeout_work,
                                  HV_UTIL_TIMEOUT * HZ);

            return;

        }

        icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
                             | ICMSGHDRFLAG_RESPONSE;

        vmbus_sendpacket(channel, recv_buffer,
                         recvlen, requestid,
                         VM_PKT_DATA_INBAND, 0);

        host_negotiatied = NEGO_FINISHED;
    }

}
Ejemplo n.º 7
0
void hv_kvp_onchannelcallback(void *context)
{
	struct vmbus_channel *channel = context;
	u32 recvlen;
	u64 requestid;

	struct hv_kvp_msg *kvp_msg;

	struct icmsg_hdr *icmsghdrp;
	struct icmsg_negotiate *negop = NULL;

	if (kvp_transaction.active) {
		/*
		 * We will defer processing this callback once
		 * the current transaction is complete.
		 */
		kvp_transaction.kvp_context = context;
		return;
	}

	vmbus_recvpacket(channel, recv_buffer, PAGE_SIZE * 2, &recvlen,
			 &requestid);

	if (recvlen > 0) {
		icmsghdrp = (struct icmsg_hdr *)&recv_buffer[
			sizeof(struct vmbuspipe_hdr)];

		if (icmsghdrp->icmsgtype == ICMSGTYPE_NEGOTIATE) {
			vmbus_prep_negotiate_resp(icmsghdrp, negop,
				 recv_buffer, MAX_SRV_VER, MAX_SRV_VER);
		} else {
			kvp_msg = (struct hv_kvp_msg *)&recv_buffer[
				sizeof(struct vmbuspipe_hdr) +
				sizeof(struct icmsg_hdr)];

			/*
			 * Stash away this global state for completing the
			 * transaction; note transactions are serialized.
			 */

			kvp_transaction.recv_len = recvlen;
			kvp_transaction.recv_channel = channel;
			kvp_transaction.recv_req_id = requestid;
			kvp_transaction.active = true;
			kvp_transaction.kvp_msg = kvp_msg;

			/*
			 * Get the information from the
			 * user-mode component.
			 * component. This transaction will be
			 * completed when we get the value from
			 * the user-mode component.
			 * Set a timeout to deal with
			 * user-mode not responding.
			 */
			schedule_work(&kvp_sendkey_work);
			schedule_delayed_work(&kvp_work, 5*HZ);

			return;

		}

		icmsghdrp->icflags = ICMSGHDRFLAG_TRANSACTION
			| ICMSGHDRFLAG_RESPONSE;

		vmbus_sendpacket(channel, recv_buffer,
				       recvlen, requestid,
				       VM_PKT_DATA_INBAND, 0);
	}

}