* Ring data starts here + RingDataStartOffset
* !!! DO NOT place any fields below this !!!
*/
- u8 buffer[0];
+ u8 buffer[];
} __packed;
struct hv_ring_buffer_info {
struct gpa_range {
u32 byte_count;
u32 byte_offset;
- u64 pfn_array[0];
+ u64 pfn_array[];
};
/*
CHANNELMSG_19 = 19,
CHANNELMSG_20 = 20,
CHANNELMSG_TL_CONNECT_REQUEST = 21,
- CHANNELMSG_22 = 22,
+ CHANNELMSG_MODIFYCHANNEL = 22,
CHANNELMSG_TL_CONNECT_RESULT = 23,
CHANNELMSG_COUNT
};
u32 gpadl;
u16 range_buflen;
u16 rangecount;
- struct gpa_range range[0];
+ struct gpa_range range[];
} __packed;
/* This is the followup packet that contains more PFNs. */
struct vmbus_channel_message_header header;
u32 msgnumber;
u32 gpadl;
- u64 pfn[0];
+ u64 pfn[];
} __packed;
struct vmbus_channel_gpadl_created {
guid_t host_service_id;
} __packed;
+/* Modify Channel parameters, cf. vmbus_send_modifychannel() */
+struct vmbus_channel_modifychannel {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+ u32 target_vp;
+} __packed;
+
struct vmbus_channel_version_response {
struct vmbus_channel_message_header header;
u8 version_supported;
* The channel message that goes out on the "wire".
* It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header
*/
- unsigned char msg[0];
+ unsigned char msg[];
};
struct vmbus_close_msg {
} u;
};
-enum hv_numa_policy {
- HV_BALANCED = 0,
- HV_LOCALIZED,
-};
-
enum vmbus_device_type {
HV_IDE = 0,
HV_SCSI,
void (*onchannel_callback)(void *context);
void *channel_callback_context;
+ void (*change_target_cpu_callback)(struct vmbus_channel *channel,
+ u32 old, u32 new);
+
+ /*
+ * Synchronize channel scheduling and channel removal; see the inline
+ * comments in vmbus_chan_sched() and vmbus_reset_channel_cb().
+ */
+ spinlock_t sched_lock;
+
/*
* A channel can be marked for one of three modes of reading:
* BATCHED - callback called from taslket and should read
u32 target_vp;
/* The corresponding CPUID in the guest */
u32 target_cpu;
- /*
- * State to manage the CPU affiliation of channels.
- */
- struct cpumask alloced_cpus_in_node;
int numa_node;
/*
* Support for sub-channels. For high performance devices,
* Support per-channel state for use by vmbus drivers.
*/
void *per_channel_state;
- /*
- * To support per-cpu lookup mapping of relid to channel,
- * link up channels based on their CPU affinity.
- */
- struct list_head percpu_list;
/*
* Defer freeing channel until after all cpu's have
*/
bool low_latency;
+ bool probe_done;
+
/*
- * NUMA distribution policy:
- * We support two policies:
- * 1) Balanced: Here all performance critical channels are
- * distributed evenly amongst all the NUMA nodes.
- * This policy will be the default policy.
- * 2) Localized: All channels of a given instance of a
- * performance critical service will be assigned CPUs
- * within a selected NUMA node.
+ * Cache the device ID here for easy access; this is useful, in
+ * particular, in situations where the channel's device_obj has
+ * not been allocated/initialized yet.
*/
- enum hv_numa_policy affinity_policy;
-
- bool probe_done;
+ u16 device_id;
/*
* We must offload the handling of the primary/sub channels
return c->offermsg.offer.sub_channel_index != 0;
}
-static inline void set_channel_affinity_state(struct vmbus_channel *c,
- enum hv_numa_policy policy)
-{
- c->affinity_policy = policy;
-}
-
static inline void set_channel_read_mode(struct vmbus_channel *c,
enum hv_callback_mode mode)
{
c->low_latency = false;
}
-void vmbus_onmessage(void *context);
+void vmbus_onmessage(struct vmbus_channel_message_header *hdr);
int vmbus_request_offers(void);
int vmbus_send_tl_connect_request(const guid_t *shv_guest_servie_id,
const guid_t *shv_host_servie_id);
+int vmbus_send_modifychannel(u32 child_relid, u32 target_vp);
void vmbus_set_event(struct vmbus_channel *channel);
/* Get the start of the ring buffer. */
projects / linux-2.6-microblaze.git / blobdiff