}
-void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid)
+static void vmbus_release_relid(u32 relid)
{
struct vmbus_channel_relid_released msg;
- unsigned long flags;
- struct vmbus_channel *primary_channel;
memset(&msg, 0, sizeof(struct vmbus_channel_relid_released));
msg.child_relid = relid;
msg.header.msgtype = CHANNELMSG_RELID_RELEASED;
vmbus_post_msg(&msg, sizeof(struct vmbus_channel_relid_released));
+}
- if (channel == NULL)
- return;
+void hv_process_channel_removal(struct vmbus_channel *channel, u32 relid)
+{
+ unsigned long flags;
+ struct vmbus_channel *primary_channel;
+
+ vmbus_release_relid(relid);
+
+ BUG_ON(!channel->rescind);
if (channel->target_cpu != get_cpu()) {
put_cpu();
}
if (channel->primary_channel == NULL) {
- spin_lock_irqsave(&vmbus_connection.channel_lock, flags);
+ mutex_lock(&vmbus_connection.channel_mutex);
list_del(&channel->listentry);
- spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags);
+ mutex_unlock(&vmbus_connection.channel_mutex);
primary_channel = channel;
} else {
list_for_each_entry_safe(channel, tmp, &vmbus_connection.chn_list,
listentry) {
- /* if we don't set rescind to true, vmbus_close_internal()
- * won't invoke hv_process_channel_removal().
- */
+ /* hv_process_channel_removal() needs this */
channel->rescind = true;
vmbus_device_unregister(channel->device_obj);
unsigned long flags;
/* Make sure this is a new offer */
- spin_lock_irqsave(&vmbus_connection.channel_lock, flags);
+ mutex_lock(&vmbus_connection.channel_mutex);
list_for_each_entry(channel, &vmbus_connection.chn_list, listentry) {
if (!uuid_le_cmp(channel->offermsg.offer.if_type,
list_add_tail(&newchannel->listentry,
&vmbus_connection.chn_list);
- spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags);
+ mutex_unlock(&vmbus_connection.channel_mutex);
if (!fnew) {
/*
return;
err_deq_chan:
- spin_lock_irqsave(&vmbus_connection.channel_lock, flags);
+ vmbus_release_relid(newchannel->offermsg.child_relid);
+
+ mutex_lock(&vmbus_connection.channel_mutex);
list_del(&newchannel->listentry);
- spin_unlock_irqrestore(&vmbus_connection.channel_lock, flags);
+ mutex_unlock(&vmbus_connection.channel_mutex);
if (newchannel->target_cpu != get_cpu()) {
put_cpu();
enum {
IDE = 0,
SCSI,
+ FC,
NIC,
ND_NIC,
+ PCIE,
MAX_PERF_CHN,
};
{ HV_IDE_GUID, },
/* Storage - SCSI */
{ HV_SCSI_GUID, },
+ /* Storage - FC */
+ { HV_SYNTHFC_GUID, },
/* Network */
{ HV_NIC_GUID, },
/* NetworkDirect Guest RDMA */
{ HV_ND_GUID, },
+ /* PCI Express Pass Through */
+ { HV_PCIE_GUID, },
};
struct cpumask *alloced_mask;
for (i = IDE; i < MAX_PERF_CHN; i++) {
- if (!memcmp(type_guid->b, hp_devs[i].guid,
- sizeof(uuid_le))) {
+ if (!uuid_le_cmp(*type_guid, hp_devs[i].guid)) {
perf_chn = true;
break;
}
channel = relid2channel(rescind->child_relid);
if (channel == NULL) {
- hv_process_channel_removal(NULL, rescind->child_relid);
+ /*
+ * This is very impossible, because in
+ * vmbus_process_offer(), we have already invoked
+ * vmbus_release_relid() on error.
+ */
return;
}