void
xpc_process_sent_chctl_flags(struct xpc_partition *part)
{
unsigned long irq_flags;
union xpc_channel_ctl_flags chctl;
struct xpc_channel *ch;
int ch_number;
u32 ch_flags;
chctl.all_flags = xpc_arch_ops.get_chctl_all_flags(part);
for (ch_number = 0; ch_number < part->nchannels; ch_number++) {
ch = &part->channels[ch_number];
if (chctl.flags[ch_number] & XPC_OPENCLOSE_CHCTL_FLAGS) {
xpc_process_openclose_chctl_flags(part, ch_number,
chctl.flags[ch_number]);
}
ch_flags = ch->flags;
if (ch_flags & XPC_C_DISCONNECTING) {
spin_lock_irqsave(&ch->lock, irq_flags);
xpc_process_disconnect(ch, &irq_flags);
spin_unlock_irqrestore(&ch->lock, irq_flags);
continue;
}
if (part->act_state == XPC_P_AS_DEACTIVATING)
continue;
if (!(ch_flags & XPC_C_CONNECTED)) {
if (!(ch_flags & XPC_C_OPENREQUEST)) {
DBUG_ON(ch_flags & XPC_C_SETUP);
(void)xpc_connect_channel(ch);
}
continue;
}
if (chctl.flags[ch_number] & XPC_MSG_CHCTL_FLAGS)
xpc_arch_ops.process_msg_chctl_flags(part, ch_number);
}
}
void
xpc_process_sent_chctl_flags(struct xpc_partition *part)
{
unsigned long irq_flags;
union xpc_channel_ctl_flags chctl;
struct xpc_channel *ch;
int ch_number;
u32 ch_flags;
chctl.all_flags = xpc_get_chctl_all_flags(part);
/*
* Initiate channel connections for registered channels.
*
* For each connected channel that has pending messages activate idle
* kthreads and/or create new kthreads as needed.
*/
for (ch_number = 0; ch_number < part->nchannels; ch_number++) {
ch = &part->channels[ch_number];
/*
* Process any open or close related chctl flags, and then deal
* with connecting or disconnecting the channel as required.
*/
if (chctl.flags[ch_number] & XPC_OPENCLOSE_CHCTL_FLAGS) {
xpc_process_openclose_chctl_flags(part, ch_number,
chctl.flags[ch_number]);
}
ch_flags = ch->flags; /* need an atomic snapshot of flags */
if (ch_flags & XPC_C_DISCONNECTING) {
spin_lock_irqsave(&ch->lock, irq_flags);
xpc_process_disconnect(ch, &irq_flags);
spin_unlock_irqrestore(&ch->lock, irq_flags);
continue;
}
if (part->act_state == XPC_P_AS_DEACTIVATING)
continue;
if (!(ch_flags & XPC_C_CONNECTED)) {
if (!(ch_flags & XPC_C_OPENREQUEST)) {
DBUG_ON(ch_flags & XPC_C_SETUP);
(void)xpc_connect_channel(ch);
} else {
spin_lock_irqsave(&ch->lock, irq_flags);
xpc_process_connect(ch, &irq_flags);
spin_unlock_irqrestore(&ch->lock, irq_flags);
}
continue;
}
/*
* Process any message related chctl flags, this may involve
* the activation of kthreads to deliver any pending messages
* sent from the other partition.
*/
if (chctl.flags[ch_number] & XPC_MSG_CHCTL_FLAGS)
xpc_process_msg_chctl_flags(part, ch_number);
}
}