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| author | Aleksandr Miloserdov <a.miloserdov@yadro.com> | 2021-02-09 10:22:01 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-02-22 22:21:29 -0500 |
| commit | 1c73e0c5e54d5f7d77f422a10b03ebe61eaed5ad (patch) | |
| tree | 5bd664dd5b431e3e94380a219201b4fee7b218b8 /include/target | |
| parent | d39bfd0686fd2b21f857c61bb2753db3a932cb24 (diff) | |
| download | linux-1c73e0c5e54d5f7d77f422a10b03ebe61eaed5ad.tar.gz | |
scsi: target: core: Add cmd length set before cmd complete
TCM doesn't properly handle underflow case for service actions. One way to
prevent it is to always complete command with
target_complete_cmd_with_length(), however it requires access to data_sg,
which is not always available.
This change introduces target_set_cmd_data_length() function which allows
to set command data length before completing it.
Link: https://lore.kernel.org/r/20210209072202.41154-2-a.miloserdov@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Aleksandr Miloserdov <a.miloserdov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_backend.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h index 6336780d83a7..ce2fba49c95d 100644 --- a/include/target/target_core_backend.h +++ b/include/target/target_core_backend.h @@ -72,6 +72,7 @@ int transport_backend_register(const struct target_backend_ops *); void target_backend_unregister(const struct target_backend_ops *); void target_complete_cmd(struct se_cmd *, u8); +void target_set_cmd_data_length(struct se_cmd *, int); void target_complete_cmd_with_length(struct se_cmd *, u8, int); void transport_copy_sense_to_cmd(struct se_cmd *, unsigned char *); |