diff options
| author | Mike Christie <michael.christie@oracle.com> | 2025-10-20 10:38:18 +0000 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-11-02 21:40:02 -0500 |
| commit | 710ad826e300ef6d13aa6fddd613a04285cc451d (patch) | |
| tree | 1e608556edad48add2bdedd5fd9cd86aa4656885 | |
| parent | 526145725106b490b0c2d9f200b705b17a3da6b6 (diff) | |
scsi: target: Report atomic values in INQUIRY
Report the atomic values in the Block Limits VPD page.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
jpg: handle not having atomic_supported attribute
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20251020103820.2917593-6-john.g.garry@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/target/target_core_spc.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index aad0096afa21..ddf8104645d1 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -521,7 +521,6 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) have_tp = 1; buf[0] = dev->transport->get_device_type(dev); - buf[3] = have_tp ? 0x3c : 0x10; /* Set WSNZ to 1 */ buf[4] = 0x01; @@ -562,11 +561,10 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) else put_unaligned_be32(dev->dev_attrib.optimal_sectors, &buf[12]); - /* - * Exit now if we don't support TP. - */ + put_unaligned_be16(12, &buf[2]); + if (!have_tp) - goto max_write_same; + goto try_atomic; /* * Set MAXIMUM UNMAP LBA COUNT @@ -595,9 +593,29 @@ spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) /* * MAXIMUM WRITE SAME LENGTH */ -max_write_same: put_unaligned_be64(dev->dev_attrib.max_write_same_len, &buf[36]); + put_unaligned_be16(40, &buf[2]); + +try_atomic: + /* + * ATOMIC + */ + if (!dev->dev_attrib.atomic_max_len) + goto done; + + if (dev->dev_attrib.atomic_max_len < io_max_blocks) + put_unaligned_be32(dev->dev_attrib.atomic_max_len, &buf[44]); + else + put_unaligned_be32(io_max_blocks, &buf[44]); + + put_unaligned_be32(dev->dev_attrib.atomic_alignment, &buf[48]); + put_unaligned_be32(dev->dev_attrib.atomic_granularity, &buf[52]); + put_unaligned_be32(dev->dev_attrib.atomic_max_with_boundary, &buf[56]); + put_unaligned_be32(dev->dev_attrib.atomic_max_boundary, &buf[60]); + + put_unaligned_be16(60, &buf[2]); +done: return 0; } |