target: replace various cmd flags with a transport state
Replace various atomic_ts used as flags in struct se_cmd with a single
transport_state bitmap that requires t_state_lock to be held for modifications.
In the target core that assumption generally is true, but some recently added
code in the SRP target had to grow new lock calls. I can't say I like the way
how it messes with the command state directly, but let's leave that for later.
(Re-add missing ib_srpt.c changes that nab dropped..)
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c
index dcb0618..a5c2e41 100644
--- a/drivers/target/target_core_tmr.c
+++ b/drivers/target/target_core_tmr.c
@@ -150,7 +150,7 @@
continue;
spin_lock(&cmd->t_state_lock);
- if (!atomic_read(&cmd->t_transport_active)) {
+ if (!(cmd->transport_state & CMD_T_ACTIVE)) {
spin_unlock(&cmd->t_state_lock);
continue;
}
@@ -255,15 +255,15 @@
cmd->t_task_cdb[0]);
pr_debug("LUN_RESET: ITT[0x%08x] - pr_res_key: 0x%016Lx"
" t_task_cdbs: %d t_task_cdbs_left: %d"
- " t_task_cdbs_sent: %d -- t_transport_active: %d"
- " t_transport_stop: %d t_transport_sent: %d\n",
+ " t_task_cdbs_sent: %d -- CMD_T_ACTIVE: %d"
+ " CMD_T_STOP: %d CMD_T_SENT: %d\n",
cmd->se_tfo->get_task_tag(cmd), cmd->pr_res_key,
cmd->t_task_list_num,
atomic_read(&cmd->t_task_cdbs_left),
atomic_read(&cmd->t_task_cdbs_sent),
- atomic_read(&cmd->t_transport_active),
- atomic_read(&cmd->t_transport_stop),
- atomic_read(&cmd->t_transport_sent));
+ (cmd->transport_state & CMD_T_ACTIVE) != 0,
+ (cmd->transport_state & CMD_T_STOP) != 0,
+ (cmd->transport_state & CMD_T_SENT) != 0);
/*
* If the command may be queued onto a workqueue cancel it now.
@@ -287,19 +287,19 @@
}
fe_count = atomic_read(&cmd->t_fe_count);
- if (atomic_read(&cmd->t_transport_active)) {
- pr_debug("LUN_RESET: got t_transport_active = 1 for"
+ if (!(cmd->transport_state & CMD_T_ACTIVE)) {
+ pr_debug("LUN_RESET: got CMD_T_ACTIVE for"
" task: %p, t_fe_count: %d dev: %p\n", task,
fe_count, dev);
- atomic_set(&cmd->t_transport_aborted, 1);
+ cmd->transport_state |= CMD_T_ABORTED;
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
core_tmr_handle_tas_abort(tmr_nacl, cmd, tas, fe_count);
continue;
}
- pr_debug("LUN_RESET: Got t_transport_active = 0 for task: %p,"
+ pr_debug("LUN_RESET: Got !CMD_T_ACTIVE for task: %p,"
" t_fe_count: %d dev: %p\n", task, fe_count, dev);
- atomic_set(&cmd->t_transport_aborted, 1);
+ cmd->transport_state |= CMD_T_ABORTED;
spin_unlock_irqrestore(&cmd->t_state_lock, flags);
core_tmr_handle_tas_abort(tmr_nacl, cmd, tas, fe_count);
@@ -339,7 +339,7 @@
if (prout_cmd == cmd)
continue;
- atomic_set(&cmd->t_transport_queue_active, 0);
+ cmd->transport_state &= ~CMD_T_QUEUED;
atomic_dec(&qobj->queue_cnt);
list_move_tail(&cmd->se_queue_node, &drain_cmd_list);
}