From 2d9668883bba31b206f9b02bfc8db1fcb4ca6079 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Mon, 20 Oct 2025 10:38:19 +0000 Subject: [PATCH] scsi: target: Add WRITE_ATOMIC_16 support to RSOC Report if the device supports WRITE_ATOMIC_16 in the REPORT_SUPPORTED_OPERATION_CODES command. Signed-off-by: Mike Christie Signed-off-by: John Garry Link: https://patch.msgid.link/20251020103820.2917593-7-john.g.garry@oracle.com Signed-off-by: Martin K. Petersen --- drivers/target/target_core_spc.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index ddf8104645d1..fe2b888bcb43 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -1470,6 +1470,24 @@ static const struct target_opcode_descriptor tcm_opcode_write_same32 = { .update_usage_bits = set_dpofua_usage_bits32, }; +static bool tcm_is_atomic_enabled(const struct target_opcode_descriptor *descr, + struct se_cmd *cmd) +{ + return cmd->se_dev->dev_attrib.atomic_max_len; +} + +static struct target_opcode_descriptor tcm_opcode_write_atomic16 = { + .support = SCSI_SUPPORT_FULL, + .opcode = WRITE_ATOMIC_16, + .cdb_size = 16, + .usage_bits = {WRITE_ATOMIC_16, 0xf8, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, SCSI_GROUP_NUMBER_MASK, SCSI_CONTROL_MASK}, + .enabled = tcm_is_atomic_enabled, + .update_usage_bits = set_dpofua_usage_bits, +}; + static bool tcm_is_caw_enabled(const struct target_opcode_descriptor *descr, struct se_cmd *cmd) { @@ -2026,6 +2044,7 @@ static const struct target_opcode_descriptor *tcm_supported_opcodes[] = { &tcm_opcode_write16, &tcm_opcode_write_verify16, &tcm_opcode_write_same32, + &tcm_opcode_write_atomic16, &tcm_opcode_compare_write, &tcm_opcode_read_capacity, &tcm_opcode_read_capacity16,