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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/hv/hv_utils_transport.h
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/hv/hv_utils_transport.h')
-rw-r--r--kernel/drivers/hv/hv_utils_transport.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/kernel/drivers/hv/hv_utils_transport.h b/kernel/drivers/hv/hv_utils_transport.h
new file mode 100644
index 000000000..314c76ce1
--- /dev/null
+++ b/kernel/drivers/hv/hv_utils_transport.h
@@ -0,0 +1,51 @@
+/*
+ * Kernel/userspace transport abstraction for Hyper-V util driver.
+ *
+ * Copyright (C) 2015, Vitaly Kuznetsov <vkuznets@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ */
+
+#ifndef _HV_UTILS_TRANSPORT_H
+#define _HV_UTILS_TRANSPORT_H
+
+#include <linux/connector.h>
+#include <linux/miscdevice.h>
+
+enum hvutil_transport_mode {
+ HVUTIL_TRANSPORT_INIT = 0,
+ HVUTIL_TRANSPORT_NETLINK,
+ HVUTIL_TRANSPORT_CHARDEV,
+};
+
+struct hvutil_transport {
+ int mode; /* hvutil_transport_mode */
+ struct file_operations fops; /* file operations */
+ struct miscdevice mdev; /* misc device */
+ struct cb_id cn_id; /* CN_*_IDX/CN_*_VAL */
+ struct list_head list; /* hvt_list */
+ int (*on_msg)(void *, int); /* callback on new user message */
+ void (*on_reset)(void); /* callback when userspace drops */
+ u8 *outmsg; /* message to the userspace */
+ int outmsg_len; /* its length */
+ wait_queue_head_t outmsg_q; /* poll/read wait queue */
+ struct mutex outmsg_lock; /* protects outmsg */
+};
+
+struct hvutil_transport *hvutil_transport_init(const char *name,
+ u32 cn_idx, u32 cn_val,
+ int (*on_msg)(void *, int),
+ void (*on_reset)(void));
+int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len);
+void hvutil_transport_destroy(struct hvutil_transport *hvt);
+
+#endif /* _HV_UTILS_TRANSPORT_H */