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Tue, 8 Oct 2024 02:04:41 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 422uw6k88u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 08 Oct 2024 02:04:40 +0000 Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 49824dIt004476; Tue, 8 Oct 2024 02:04:40 GMT Received: from mnc-mac.us.oracle.com (dhcp-10-39-198-64.vpn.oracle.com [10.39.198.64]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 422uw6k87u-3; Tue, 08 Oct 2024 02:04:40 +0000 From: Mike Christie To: martin.petersen@oracle.com, linux-scsi@vger.kernel.org, target-devel@vger.kernel.org Cc: Mike Christie Subject: [PATCH 2/7] scsi: target: Add atomic se_device fields Date: Mon, 7 Oct 2024 21:03:11 -0500 Message-ID: <20241008020437.78788-3-michael.christie@oracle.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20241008020437.78788-1-michael.christie@oracle.com> References: <20241008020437.78788-1-michael.christie@oracle.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-08_01,2024-10-07_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 malwarescore=0 suspectscore=0 mlxscore=0 phishscore=0 adultscore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2409260000 definitions=main-2410080011 X-Proofpoint-GUID: KMU05S5Cek2K_u6N8gs5OG1WB922ZnX_ X-Proofpoint-ORIG-GUID: KMU05S5Cek2K_u6N8gs5OG1WB922ZnX_ This adds atomic fields to the se_device and exports them in configfs. Initially only target_core_iblock will be supported and we will inherit all the settings from the block layer except the alignment which userspace will set. Signed-off-by: Mike Christie --- drivers/target/target_core_configfs.c | 42 +++++++++++++++++++++++++++ include/target/target_core_base.h | 6 ++++ 2 files changed, 48 insertions(+) diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index c40217f44b1b..f3c7da650f65 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -578,6 +578,12 @@ DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data); DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len); DEF_CONFIGFS_ATTRIB_SHOW(emulate_rsoc); DEF_CONFIGFS_ATTRIB_SHOW(submit_type); +DEF_CONFIGFS_ATTRIB_SHOW(atomic_supported); +DEF_CONFIGFS_ATTRIB_SHOW(atomic_alignment); +DEF_CONFIGFS_ATTRIB_SHOW(atomic_max_len); +DEF_CONFIGFS_ATTRIB_SHOW(atomic_granularity); +DEF_CONFIGFS_ATTRIB_SHOW(atomic_max_with_boundary); +DEF_CONFIGFS_ATTRIB_SHOW(atomic_max_boundary); #define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \ static ssize_t _name##_store(struct config_item *item, const char *page,\ @@ -1266,6 +1272,30 @@ static ssize_t submit_type_store(struct config_item *item, const char *page, return count; } +static ssize_t atomic_alignment_store(struct config_item *item, + const char *page, size_t count) +{ + struct se_dev_attrib *da = to_attrib(item); + u32 val; + int ret; + + ret = kstrtou32(page, 0, &val); + if (ret < 0) + return ret; + + if (da->da_dev->export_count) { + pr_err("dev[%p]: Unable to change SE Device atomic_alignment while export_count is %d\n", + da->da_dev, da->da_dev->export_count); + return -EINVAL; + } + + da->atomic_alignment = val; + + pr_debug("dev[%p]: SE Device atomic_alignment changed to %u\n", + da->da_dev, val); + return count; +} + CONFIGFS_ATTR(, emulate_model_alias); CONFIGFS_ATTR(, emulate_dpo); CONFIGFS_ATTR(, emulate_fua_write); @@ -1302,6 +1332,12 @@ CONFIGFS_ATTR(, max_write_same_len); CONFIGFS_ATTR(, alua_support); CONFIGFS_ATTR(, pgr_support); CONFIGFS_ATTR(, submit_type); +CONFIGFS_ATTR(, atomic_alignment); +CONFIGFS_ATTR_RO(, atomic_supported); +CONFIGFS_ATTR_RO(, atomic_max_len); +CONFIGFS_ATTR_RO(, atomic_granularity); +CONFIGFS_ATTR_RO(, atomic_max_with_boundary); +CONFIGFS_ATTR_RO(, atomic_max_boundary); /* * dev_attrib attributes for devices using the target core SBC/SPC @@ -1345,6 +1381,12 @@ struct configfs_attribute *sbc_attrib_attrs[] = { &attr_pgr_support, &attr_emulate_rsoc, &attr_submit_type, + &attr_atomic_supported, + &attr_atomic_alignment, + &attr_atomic_max_len, + &attr_atomic_granularity, + &attr_atomic_max_with_boundary, + &attr_atomic_max_boundary, NULL, }; EXPORT_SYMBOL(sbc_attrib_attrs); diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 97099a5e3f6c..6c87bd018983 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -715,6 +715,7 @@ struct se_dev_attrib { bool is_nonrot; bool emulate_rest_reord; bool unmap_zeroes_data; + bool atomic_supported; u32 hw_block_size; u32 block_size; u32 hw_max_sectors; @@ -726,6 +727,11 @@ struct se_dev_attrib { u32 unmap_granularity; u32 unmap_granularity_alignment; u32 max_write_same_len; + u32 atomic_max_len; + u32 atomic_alignment; + u32 atomic_granularity; + u32 atomic_max_with_boundary; + u32 atomic_max_boundary; u8 submit_type; struct se_device *da_dev; struct config_group da_group;