bus/vmbus: use SMP memory barrier for signaling read

[dpdk.git] / examples / vm_power_manager / channel_manager.h

diff --git a/examples/vm_power_manager/channel_manager.h b/examples/vm_power_manager/channel_manager.h
index 3766e93..e55376f 100644 (file)
--- a/examples/vm_power_manager/channel_manager.h
+++ b/examples/vm_power_manager/channel_manager.h
@@ -10,8 +10,9 @@ extern "C" {
 #endif
 
 #include <linux/limits.h>
-#include <sys/un.h>
+#include <linux/un.h>
 #include <rte_atomic.h>
+#include <stdbool.h>
 
 /* Maximum name length including '\0' terminator */
 #define CHANNEL_MGR_MAX_NAME_LEN    64
@@ -25,11 +26,6 @@ extern "C" {
 /* FIFO file name template */
 #define CHANNEL_MGR_FIFO_PATTERN_NAME   "fifo"
 
-#ifndef UNIX_PATH_MAX
-struct sockaddr_un _sockaddr_un;
-#define UNIX_PATH_MAX sizeof(_sockaddr_un.sun_path)
-#endif
-
 #define MAX_CLIENTS 64
 #define MAX_VCPUS 20
 
@@ -40,7 +36,7 @@ struct libvirt_vm_info {
        uint8_t num_cpus;
 };
 
-struct libvirt_vm_info lvm_info[MAX_CLIENTS];
+extern struct libvirt_vm_info lvm_info[MAX_CLIENTS];
 /* Communication Channel Status */
 enum channel_status { CHANNEL_MGR_CHANNEL_DISCONNECTED = 0,
        CHANNEL_MGR_CHANNEL_CONNECTED,
@@ -79,6 +75,7 @@ struct vm_info {
        unsigned num_vcpus;                           /**< number of vCPUS */
        struct channel_info channels[RTE_MAX_LCORE];  /**< channel_info array */
        unsigned num_channels;                        /**< Number of channels */
+       int allow_query;                              /**< is query allowed */
 };
 
 /**
@@ -143,6 +140,22 @@ uint16_t get_pcpu(struct channel_info *chan_info, unsigned int vcpu);
  */
 int set_pcpu(char *vm_name, unsigned int vcpu, unsigned int pcpu);
 
+/**
+ * Allow or disallow queries for specified VM.
+ * It is thread-safe.
+ *
+ * @param name
+ *  Virtual Machine name to lookup.
+ *
+ * @param allow_query
+ *  Query status to be set.
+ *
+ * @return
+ *  - 0 on success.
+ *  - Negative on error.
+ */
+int set_query_status(char *vm_name, bool allow_query);
+
 /**
  * Add a VM as specified by name to the Channel Manager. The name must
  * correspond to a valid libvirt domain name.