From: "Martin K. Petersen" <martin.petersen@oracle.com> stable inclusion from stable-v5.10.206 commit 294d66c35a4e019a9dfe889fe382adce1cc3773e category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8ZD3X CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v... ------------------------- [ Upstream commit 7ba46799d34695534666a3f71a2be10ea85ece6c ] We are about to remove the request pointer from struct scsi_cmnd and that will complicate getting to the ref_tag via t10_pi_ref_tag() in the various drivers. Introduce a helper function to retrieve the reference tag so drivers will not have to worry about the details. Link: https://lore.kernel.org/r/20210609033929.3815-2-martin.petersen@oracle.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Message-Id: <20210609033929.3815-2-martin.petersen@oracle.com> Stable-dep-of: 066c5b46b6ea ("scsi: core: Always send batch on reset or error handling command") Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com> --- include/scsi/scsi_cmnd.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index d4dbbd3e58dd..bcec05be1a5e 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -291,6 +291,13 @@ static inline sector_t scsi_get_lba(struct scsi_cmnd *scmd) return blk_rq_pos(scmd->request); } +static inline u32 scsi_prot_ref_tag(struct scsi_cmnd *scmd) +{ + struct request *rq = blk_mq_rq_from_pdu(scmd); + + return t10_pi_ref_tag(rq); +} + static inline unsigned int scsi_prot_interval(struct scsi_cmnd *scmd) { return scmd->device->sector_size; -- 2.31.1