Immediate queue:
Consolidate down to one switch statement by moving send_tx_data and stuff
from second switch into the first switch, or the functions the first switch
calls.
Response queue:
Do not lock istate_lock except directly around i_state modifications.
Put entire ISTATE_SEND_DATAIN path within first switch statement, in prep
for further refactoring.
All other cases set use_misc = 1 and will not be using sendpage, so just
use send_tx_data for these and set use_misc param to 1.
map_sg, sent_status, use_misc, and se_cmd vars no longer needed.
Then put immediate and response handling in separate functions in order
to get iscsi_target_tx_thread down to where it fits on a page.
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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