diff options
| author | Roland Dreier <roland@purestorage.com> | 2012-02-13 16:18:17 -0800 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-02-25 14:37:49 -0800 |
| commit | 015487b89f27d91d95a056cdc3c85e6c729bff12 (patch) | |
| tree | 0cecb2acc903154e25abb23e8f345f301fcd1ef5 /drivers/target/target_core_cdb.c | |
| parent | effc6cc8828257c32c37635e737f14fd6e19ecd7 (diff) | |
target: Untangle front-end and back-end meanings of max_sectors attribute
se_dev_attrib.max_sectors currently has two independent meanings:
- It is reported in the block limits VPD page as the maximum transfer
length, ie the largest IO that the front-end (fabric) can handle.
Also the target core doesn't enforce this maximum transfer length.
- It is used to hold the size of the largest IO that the back-end can
handle, so we know when to split SCSI commands into multiple tasks.
Fix this by adding a new se_dev_attrib.fabric_max_sectors to hold the
maximum transfer length, and checking incoming IOs against that limit.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_cdb.c')
| -rw-r--r-- | drivers/target/target_core_cdb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c index 4f65b258cc25..41ca2d43377b 100644 --- a/drivers/target/target_core_cdb.c +++ b/drivers/target/target_core_cdb.c @@ -456,7 +456,7 @@ target_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) /* * Set MAXIMUM TRANSFER LENGTH */ - put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_sectors, &buf[8]); + put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.fabric_max_sectors, &buf[8]); /* * Set OPTIMAL TRANSFER LENGTH |