diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/target/target_core_rd.c | 66 |
1 files changed, 32 insertions, 34 deletions
diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c index bedd4a18b3ca..ccf62a88f017 100644 --- a/drivers/target/target_core_rd.c +++ b/drivers/target/target_core_rd.c @@ -382,6 +382,36 @@ static struct rd_dev_sg_table *rd_get_prot_table(struct rd_dev *rd_dev, u32 page return NULL; } +typedef sense_reason_t (*dif_verify)(struct se_cmd *, sector_t, unsigned int, + unsigned int, struct scatterlist *, int); + +static sense_reason_t rd_do_prot_rw(struct se_cmd *cmd, dif_verify dif_verify) +{ + struct se_device *se_dev = cmd->se_dev; + struct rd_dev *dev = RD_DEV(se_dev); + struct rd_dev_sg_table *prot_table; + struct scatterlist *prot_sg; + u32 sectors = cmd->data_length / se_dev->dev_attrib.block_size; + u32 prot_offset, prot_page; + u64 tmp; + sense_reason_t rc; + + tmp = cmd->t_task_lba * se_dev->prot_length; + prot_offset = do_div(tmp, PAGE_SIZE); + prot_page = tmp; + + prot_table = rd_get_prot_table(dev, prot_page); + if (!prot_table) + return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; + + prot_sg = &prot_table->sg_table[prot_page - + prot_table->page_start_offset]; + + rc = dif_verify(cmd, cmd->t_task_lba, sectors, 0, prot_sg, prot_offset); + + return rc; +} + static sense_reason_t rd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, enum dma_data_direction data_direction) @@ -421,23 +451,7 @@ rd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, if (cmd->prot_type && se_dev->dev_attrib.pi_prot_type && data_direction == DMA_TO_DEVICE) { - struct rd_dev_sg_table *prot_table; - struct scatterlist *prot_sg; - u32 sectors = cmd->data_length / se_dev->dev_attrib.block_size; - u32 prot_offset, prot_page; - - tmp = cmd->t_task_lba * se_dev->prot_length; - prot_offset = do_div(tmp, PAGE_SIZE); - prot_page = tmp; - - prot_table = rd_get_prot_table(dev, prot_page); - if (!prot_table) - return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; - - prot_sg = &prot_table->sg_table[prot_page - prot_table->page_start_offset]; - - rc = sbc_dif_verify_write(cmd, cmd->t_task_lba, sectors, 0, - prot_sg, prot_offset); + rc = rd_do_prot_rw(cmd, sbc_dif_verify_write); if (rc) return rc; } @@ -505,23 +519,7 @@ rd_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, if (cmd->prot_type && se_dev->dev_attrib.pi_prot_type && data_direction == DMA_FROM_DEVICE) { - struct rd_dev_sg_table *prot_table; - struct scatterlist *prot_sg; - u32 sectors = cmd->data_length / se_dev->dev_attrib.block_size; - u32 prot_offset, prot_page; - - tmp = cmd->t_task_lba * se_dev->prot_length; - prot_offset = do_div(tmp, PAGE_SIZE); - prot_page = tmp; - - prot_table = rd_get_prot_table(dev, prot_page); - if (!prot_table) - return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; - - prot_sg = &prot_table->sg_table[prot_page - prot_table->page_start_offset]; - - rc = sbc_dif_verify_read(cmd, cmd->t_task_lba, sectors, 0, - prot_sg, prot_offset); + rc = rd_do_prot_rw(cmd, sbc_dif_verify_read); if (rc) return rc; } |