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| author | Nicholas Bellinger | 2015-02-14 02:32:11 +0100 |
|---|---|---|
| committer | Nicholas Bellinger | 2015-02-14 03:09:45 +0100 |
| commit | afd73f1b60fc5883ea4982f68e9522e77b28f1e5 (patch) | |
| tree | c8bfb7f917842b9cc8d0f0f24e71f3be869ba420 /drivers/target/target_core_iblock.c | |
| parent | target: Fail I/O with PROTECT bit when protection is unsupported (diff) | |
| download | kernel-qcow2-linux-afd73f1b60fc5883ea4982f68e9522e77b28f1e5.tar.gz kernel-qcow2-linux-afd73f1b60fc5883ea4982f68e9522e77b28f1e5.tar.xz kernel-qcow2-linux-afd73f1b60fc5883ea4982f68e9522e77b28f1e5.zip | |
target: Perform PROTECT sanity checks for WRITE_SAME
This patch adds a call to sbc_check_prot() within sbc_setup_write_same()
code to perform the various protection releated sanity checks, including
failing if WRPROTECT or RDPROTECT is set for a backend device that has
not advertised support for T10-PI.
Also, since WRITE_SAME + T10-PI is currently not supported by IBLOCK +
FILEIO backends, go ahead and fail if ->execute_write_same() is invoked
with a non zero cmd->prot_op.
Cc: Martin Petersen <martin.petersen@oracle.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_iblock.c')
| -rw-r--r-- | drivers/target/target_core_iblock.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 3efff94fbd97..303299efa3a6 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -464,6 +464,11 @@ iblock_execute_write_same(struct se_cmd *cmd) sector_t block_lba = cmd->t_task_lba; sector_t sectors = sbc_get_write_same_sectors(cmd); + if (cmd->prot_op) { + pr_err("WRITE_SAME: Protection information with IBLOCK" + " backends not supported\n"); + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + } sg = &cmd->t_data_sg[0]; if (cmd->t_data_nents > 1 || |