diff options
Diffstat (limited to 'drivers/target/target_core_sbc.c')
-rw-r--r-- | drivers/target/target_core_sbc.c | 94 |
1 files changed, 6 insertions, 88 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 733824e3825f..ca95fab3521a 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -1266,9 +1266,8 @@ check_ref: return 0; } -static void -sbc_dif_copy_prot(struct se_cmd *cmd, unsigned int sectors, bool read, - struct scatterlist *sg, int sg_off) +void sbc_dif_copy_prot(struct se_cmd *cmd, unsigned int sectors, bool read, + struct scatterlist *sg, int sg_off) { struct se_device *dev = cmd->se_dev; struct scatterlist *psg; @@ -1309,68 +1308,11 @@ sbc_dif_copy_prot(struct se_cmd *cmd, unsigned int sectors, bool read, kunmap_atomic(paddr); } } +EXPORT_SYMBOL(sbc_dif_copy_prot); sense_reason_t -sbc_dif_verify_write(struct se_cmd *cmd, sector_t start, unsigned int sectors, - unsigned int ei_lba, struct scatterlist *sg, int sg_off) -{ - struct se_device *dev = cmd->se_dev; - struct se_dif_v1_tuple *sdt; - struct scatterlist *dsg, *psg = cmd->t_prot_sg; - sector_t sector = start; - void *daddr, *paddr; - int i, j, offset = 0; - sense_reason_t rc; - - for_each_sg(cmd->t_data_sg, dsg, cmd->t_data_nents, i) { - daddr = kmap_atomic(sg_page(dsg)) + dsg->offset; - paddr = kmap_atomic(sg_page(psg)) + psg->offset; - - for (j = 0; j < dsg->length; j += dev->dev_attrib.block_size) { - - if (offset >= psg->length) { - kunmap_atomic(paddr); - psg = sg_next(psg); - paddr = kmap_atomic(sg_page(psg)) + psg->offset; - offset = 0; - } - - sdt = paddr + offset; - - pr_debug("DIF WRITE sector: %llu guard_tag: 0x%04x" - " app_tag: 0x%04x ref_tag: %u\n", - (unsigned long long)sector, sdt->guard_tag, - sdt->app_tag, be32_to_cpu(sdt->ref_tag)); - - rc = sbc_dif_v1_verify(cmd, sdt, daddr + j, sector, - ei_lba); - if (rc) { - kunmap_atomic(paddr); - kunmap_atomic(daddr); - cmd->bad_sector = sector; - return rc; - } - - sector++; - ei_lba++; - offset += sizeof(struct se_dif_v1_tuple); - } - - kunmap_atomic(paddr); - kunmap_atomic(daddr); - } - if (!sg) - return 0; - - sbc_dif_copy_prot(cmd, sectors, false, sg, sg_off); - - return 0; -} -EXPORT_SYMBOL(sbc_dif_verify_write); - -static sense_reason_t -__sbc_dif_verify_read(struct se_cmd *cmd, sector_t start, unsigned int sectors, - unsigned int ei_lba, struct scatterlist *sg, int sg_off) +sbc_dif_verify(struct se_cmd *cmd, sector_t start, unsigned int sectors, + unsigned int ei_lba, struct scatterlist *sg, int sg_off) { struct se_device *dev = cmd->se_dev; struct se_dif_v1_tuple *sdt; @@ -1426,28 +1368,4 @@ __sbc_dif_verify_read(struct se_cmd *cmd, sector_t start, unsigned int sectors, return 0; } - -sense_reason_t -sbc_dif_read_strip(struct se_cmd *cmd) -{ - struct se_device *dev = cmd->se_dev; - u32 sectors = cmd->prot_length / dev->prot_length; - - return __sbc_dif_verify_read(cmd, cmd->t_task_lba, sectors, 0, - cmd->t_prot_sg, 0); -} - -sense_reason_t -sbc_dif_verify_read(struct se_cmd *cmd, sector_t start, unsigned int sectors, - unsigned int ei_lba, struct scatterlist *sg, int sg_off) -{ - sense_reason_t rc; - - rc = __sbc_dif_verify_read(cmd, start, sectors, ei_lba, sg, sg_off); - if (rc) - return rc; - - sbc_dif_copy_prot(cmd, sectors, true, sg, sg_off); - return 0; -} -EXPORT_SYMBOL(sbc_dif_verify_read); +EXPORT_SYMBOL(sbc_dif_verify); |