[SCSI] scsi tgt: scsi target user and kernel communication interface

Browse source

The user-space daemon and tgt kernel module need bi-directional
kernel/user high-performance interface, however, mainline provides no
standard interface like that.

This patch adds shared memory interface between kernel and user spaces
like some other drivers do by using own character device. The
user-space daemon and tgt kernel module creates shared memory via mmap
and use it like ring buffer. poll (kernel to user) and write (user to
kernel) system calls are used for notification.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

...

This commit is contained in:

FUJITA Tomonori 2006-11-16 19:24:16 +09:00 • committed by James Bottomley

parent 5a55c2596f

commit 97f78759ea

2 changed files with 440 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

350

drivers/scsi/scsi_tgt_if.c

View file

90

include/scsi/scsi_tgt_if.h

View file