diff options
| author | Christophe Vu-Brugier <cvubrugier@yahoo.fr> | 2014-06-10 19:53:21 +0400 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-06-11 22:52:40 +0400 |
| commit | 6ef31dc720cff4dc6a67ccb8c73c56dbf2ea6a08 (patch) | |
| tree | f1f7fe44b3de9d64dea919ff3bea774cd0760c58 /drivers/target/target_core_sbc.c | |
| parent | 22c7aaa57e80853b4904a46c18f97db0036a3b97 (diff) | |
| download | linux-6ef31dc720cff4dc6a67ccb8c73c56dbf2ea6a08.tar.xz | |
target/sbc: Remove sbc_check_valid_sectors()
A similar check is performed at the end of sbc_parse_cdb() and is now
enforced if the SYNCHRONIZE CACHE command's backend supports
->execute_sync_cache().
(Add check_lba goto to avoid *_max_sectors checks - nab)
Signed-off-by: Christophe Vu-Brugier <cvubrugier@yahoo.fr>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_sbc.c')
| -rw-r--r-- | drivers/target/target_core_sbc.c | 45 |
1 files changed, 6 insertions, 39 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index e0229592ec55..7675d2aaa0f7 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -176,24 +176,6 @@ static inline u32 sbc_get_size(struct se_cmd *cmd, u32 sectors) return cmd->se_dev->dev_attrib.block_size * sectors; } -static int sbc_check_valid_sectors(struct se_cmd *cmd) -{ - struct se_device *dev = cmd->se_dev; - unsigned long long end_lba; - u32 sectors; - - sectors = cmd->data_length / dev->dev_attrib.block_size; - end_lba = dev->transport->get_blocks(dev) + 1; - - if (cmd->t_task_lba + sectors > end_lba) { - pr_err("target: lba %llu, sectors %u exceeds end lba %llu\n", - cmd->t_task_lba, sectors, end_lba); - return -EINVAL; - } - - return 0; -} - static inline u32 transport_get_sectors_6(unsigned char *cdb) { /* @@ -877,15 +859,6 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) break; case SYNCHRONIZE_CACHE: case SYNCHRONIZE_CACHE_16: - if (!ops->execute_sync_cache) { - size = 0; - cmd->execute_cmd = sbc_emulate_noop; - break; - } - - /* - * Extract LBA and range to be flushed for emulated SYNCHRONIZE_CACHE - */ if (cdb[0] == SYNCHRONIZE_CACHE) { sectors = transport_get_sectors_10(cdb); cmd->t_task_lba = transport_lba_32(cdb); @@ -893,18 +866,12 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) sectors = transport_get_sectors_16(cdb); cmd->t_task_lba = transport_lba_64(cdb); } - - size = sbc_get_size(cmd, sectors); - - /* - * Check to ensure that LBA + Range does not exceed past end of - * device for IBLOCK and FILEIO ->do_sync_cache() backend calls - */ - if (cmd->t_task_lba || sectors) { - if (sbc_check_valid_sectors(cmd) < 0) - return TCM_ADDRESS_OUT_OF_RANGE; + if (ops->execute_sync_cache) { + cmd->execute_cmd = ops->execute_sync_cache; + goto check_lba; } - cmd->execute_cmd = ops->execute_sync_cache; + size = 0; + cmd->execute_cmd = sbc_emulate_noop; break; case UNMAP: if (!ops->execute_unmap) @@ -988,7 +955,7 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) dev->dev_attrib.hw_max_sectors); return TCM_INVALID_CDB_FIELD; } - +check_lba: end_lba = dev->transport->get_blocks(dev) + 1; if (cmd->t_task_lba + sectors > end_lba) { pr_err("cmd exceeds last lba %llu " |