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| author | Andy Grover <agrover@redhat.com> | 2015-05-19 14:44:39 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-05-30 19:57:48 -0700 |
| commit | 9c1cd1b68cd15c81d12a0cf2402129475882b620 (patch) | |
| tree | 83f3008fd0b47e62b6792926f2bc8eec1b9082d2 /Documentation/target/tcmu-design.txt | |
| parent | cf87edc6022d1fe7efa6b8ce1a99f2ef6a1b27f9 (diff) | |
| download | linux-9c1cd1b68cd15c81d12a0cf2402129475882b620.tar.bz2 | |
target/user: Only support full command pass-through
After much discussion, give up on only passing a subset of SCSI commands
to userspace and pass them all. Based on what pscsi is doing, make sure
to set SCF_SCSI_DATA_CDB for I/O ops, and define attributes identical to
pscsi.
Make hw_block_size configurable via dev param.
Remove mention of command filtering from tcmu-design.txt.
Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'Documentation/target/tcmu-design.txt')
| -rw-r--r-- | Documentation/target/tcmu-design.txt | 21 |
1 files changed, 1 insertions, 20 deletions
diff --git a/Documentation/target/tcmu-design.txt b/Documentation/target/tcmu-design.txt index b495108c433c..263b907517ac 100644 --- a/Documentation/target/tcmu-design.txt +++ b/Documentation/target/tcmu-design.txt @@ -15,8 +15,7 @@ Contents: a) Discovering and configuring TCMU uio devices b) Waiting for events on the device(s) c) Managing the command ring -3) Command filtering -4) A final note +3) A final note TCM Userspace Design @@ -364,24 +363,6 @@ int handle_device_events(int fd, void *map) } -Command filtering ------------------ - -Initial TCMU support is for a filtered commandset. Only IO-related -commands are presented to userspace, and the rest are handled by LIO's -in-kernel command emulation. The commands presented are all versions -of: - -READ -WRITE -WRITE_VERIFY -XDWRITEREAD -WRITE_SAME -COMPARE_AND_WRITE -SYNCHRONIZE_CACHE -UNMAP - - A final note ------------ |