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Wed, 16 Oct 2024 11:37:50 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20241016113750epsmtrp22c814f9026baaea6d5e51cb50909d6ca~_6_O-nlbU1554615546epsmtrp2x; Wed, 16 Oct 2024 11:37:50 +0000 (GMT) X-AuditID: b6c32a44-6dbff7000000217e-56-670fb3747bd0 Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 31.CA.08229.E85AF076; Wed, 16 Oct 2024 20:37:50 +0900 (KST) Received: from localhost.localdomain (unknown [107.99.41.245]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20241016113748epsmtip183e9a7ec82ba541b29d1130741cc0b4d~_6_M1iVTA2875928759epsmtip1J; Wed, 16 Oct 2024 11:37:47 +0000 (GMT) From: Anuj Gupta To: axboe@kernel.dk, hch@lst.de, kbusch@kernel.org, martin.petersen@oracle.com, asml.silence@gmail.com, anuj1072538@gmail.com, krisman@suse.de Cc: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, gost.dev@samsung.com, linux-scsi@vger.kernel.org, vishak.g@samsung.com, Anuj Gupta , Kanchan Joshi Subject: [PATCH v4 08/11] block: introduce BIP_CHECK_GUARD/REFTAG/APPTAG bip_flags Date: Wed, 16 Oct 2024 16:59:09 +0530 Message-Id: <20241016112912.63542-9-anuj20.g@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20241016112912.63542-1-anuj20.g@samsung.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrFJsWRmVeSWpSXmKPExsWy7bCmhm7JZv50g63/ZCw+fv3NYtE04S+z xZxV2xgtVt/tZ7O4eWAnk8XK1UeZLN61nmOxOPr/LZvFpEPXGC22n1nKbLH3lrbF/GVP2S26 r+9gs1h+/B+TxflZc9gd+D12zrrL7nH5bKnHplWdbB6bl9R77L7ZwObx8ektFo++LasYPTaf rvb4vEkugDMq2yYjNTEltUghNS85PyUzL91WyTs43jne1MzAUNfQ0sJcSSEvMTfVVsnFJ0DX LTMH6HwlhbLEnFKgUEBicbGSvp1NUX5pSapCRn5xia1SakFKToFJgV5xYm5xaV66Xl5qiZWh gYGRKVBhQnZG+69u5oJZEhWdR8+zNDB+Eu5i5OSQEDCRuLKjhbmLkYtDSGA3o8T5032sEM4n RokVz28wQjjfGCXmrWtkhWn5tesAE0RiL6NEw6yFUP2fGSUWr7kKVsUmoC5x5HkrI4gtIjCJ UeL55VCQImaB94wS7/cvBysSFgiRmP/9NRuIzSKgKrHiZhs7iM0rYCnR/PYs1Dp5iZmXvoPF OQWsJE6dOwhVIyhxcuYTFhCbGaimeetssCskBPZwSKzc0MIO0ewi8bhzMiOELSzx6vgWqLiU xOd3e9kg7HSJH5efMkHYBRLNx/ZB1dtLtJ7qBxrKAbRAU2L9Ln2IsKzE1FPrmCD28kn0/n4C 1corsWMejK0k0b5yDpQtIbH3XAOU7SHxe9oMNkho9TJKvJ3azjqBUWEWkn9mIflnFsLqBYzM qxglUwuKc9NTk00LDPNSy+HxnJyfu4kRnKi1XHYw3pj/T+8QIxMH4yFGCQ5mJRHeSV286UK8 KYmVValF+fFFpTmpxYcYTYEBPpFZSjQ5H5gr8kriDU0sDUzMzMxMLI3NDJXEeV+3zk0REkhP LEnNTk0tSC2C6WPi4JRqYArwaLH5Wjgt/k87x5dzTZOET3dOu32kInf6zv9HZd8/3dTdefrj 4uUPkk/vzVDenf0q+IZF1J3AIt45/i8n/drRKndt0ZH7Djlyz//t298gPWWRwOs7F0T1lCPf yn6ckjg9w4UrzHySx8PQhunvbzc93Wj/7nVnyiyfzpdFv897OAjckY2bzLTs5IF5z1Z8WqrH uD372+XD/vOSNju/XZxQtEZBtvK3lKbQwjncweeYCu7qSVbK22oIKmx7fNdk1f8nYZwd7it4 ir4bp1+WOd/+dVfnnouFUq9c7+ya/bdga9mXZw7Mp3Pjdc1eWIb/5d9+sb/b5OJhhx9vz37t /jDT5tvEFVeu7j5xTyn1nf+5GUosxRmJhlrMRcWJAFR7iohdBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpkkeLIzCtJLcpLzFFi42LZdlhJTrdvKX+6wc57/BYfv/5msWia8JfZ Ys6qbYwWq+/2s1ncPLCTyWLl6qNMFu9az7FYHP3/ls1i0qFrjBbbzyxltth7S9ti/rKn7Bbd 13ewWSw//o/J4vysOewO/B47Z91l97h8ttRj06pONo/NS+o9dt9sYPP4+PQWi0ffllWMHptP V3t83iQXwBnFZZOSmpNZllqkb5fAldH+q5u5YJZERefR8ywNjJ+Euxg5OSQETCR+7TrA1MXI xSEksJtRYuLGG+wQCQmJUy+XMULYwhIr/z1nhyj6yChx6s5nNpAEm4C6xJHnrYwgCRGBWYwS h2fNBxvFLPCdUWLa8mssIFXCAkEST26/YwWxWQRUJVbcbANbwStgKdH89iwrxAp5iZmXvoPF OQWsJE6dOwhmCwHV/Jv8gRGiXlDi5MwnYDOZgeqbt85mnsAItBYhNQtJagEj0ypGydSC4tz0 3GLDAsO81HK94sTc4tK8dL3k/NxNjOBY0tLcwbh91Qe9Q4xMHIyHGCU4mJVEeCd18aYL8aYk VlalFuXHF5XmpBYfYpTmYFES5xV/0ZsiJJCeWJKanZpakFoEk2Xi4JRqYAr4NtNUjM+TwyrI fNm0jfLstz3O6nT77S3NT/7VJbC/8NHeu0d6pLQfFLNcS3vQeVqu8jB7uckcyTfLigw4r66N OBcddf/DhPStxioy3WejbfuNJdKVfbfs+dr7akZW8t41Tdv4v7/Y8vC1bvmimvIT9ov/lc+2 3lww5yYzt4ilyYlL80+H79nU6OPKYMSy4HqmW5jRseuz9y+d6P01darv17SNic51V2eHcnYs 96jgfHtJ9G7APK2PCp1zZR+wacobrNzV63QpkPeSPbfL69uH6nvq2M4Km3MbTz913GKZ9vb2 JXf4+iLDrn+apHbEmenmjJYkprmsWpJXFCP+ujobTTHLqvm+i3HPcmWvD0osxRmJhlrMRcWJ AFXA9EwUAwAA X-CMS-MailID: 20241016113750epcas5p2089e395ca764de023be64519da9b0982 X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20241016113750epcas5p2089e395ca764de023be64519da9b0982 References: <20241016112912.63542-1-anuj20.g@samsung.com> This patch introduces BIP_CHECK_GUARD/REFTAG/APPTAG bip_flags which indicate how the hardware should check the integrity payload. The driver can now just rely on block layer flags, and doesn't need to know the integrity source. Submitter of PI decides which tags to check. This would also give us a unified interface for user and kernel generated integrity. Signed-off-by: Anuj Gupta Signed-off-by: Kanchan Joshi --- block/bio-integrity.c | 5 +++++ drivers/nvme/host/core.c | 11 +++-------- include/linux/bio-integrity.h | 6 +++++- 3 files changed, 13 insertions(+), 9 deletions(-) diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 341a0382befd..d3c8b56d3fe6 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -436,6 +436,11 @@ bool bio_integrity_prep(struct bio *bio) if (bi->csum_type == BLK_INTEGRITY_CSUM_IP) bip->bip_flags |= BIP_IP_CHECKSUM; + /* describe what tags to check in payload */ + if (bi->csum_type) + bip->bip_flags |= BIP_CHECK_GUARD; + if (bi->flags & BLK_INTEGRITY_REF_TAG) + bip->bip_flags |= BIP_CHECK_REFTAG; if (bio_integrity_add_page(bio, virt_to_page(buf), len, offset_in_page(buf)) < len) { printk(KERN_ERR "could not attach integrity payload\n"); diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 43d73d31c66f..211f44cc02a3 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1004,18 +1004,13 @@ static inline blk_status_t nvme_setup_rw(struct nvme_ns *ns, control |= NVME_RW_PRINFO_PRACT; } - switch (ns->head->pi_type) { - case NVME_NS_DPS_PI_TYPE3: + if (bio_integrity_flagged(req->bio, BIP_CHECK_GUARD)) control |= NVME_RW_PRINFO_PRCHK_GUARD; - break; - case NVME_NS_DPS_PI_TYPE1: - case NVME_NS_DPS_PI_TYPE2: - control |= NVME_RW_PRINFO_PRCHK_GUARD | - NVME_RW_PRINFO_PRCHK_REF; + if (bio_integrity_flagged(req->bio, BIP_CHECK_REFTAG)) { + control |= NVME_RW_PRINFO_PRCHK_REF; if (op == nvme_cmd_zone_append) control |= NVME_RW_APPEND_PIREMAP; nvme_set_ref_tag(ns, cmnd, req); - break; } } diff --git a/include/linux/bio-integrity.h b/include/linux/bio-integrity.h index 529ec7a8df20..a9dd0594dfc8 100644 --- a/include/linux/bio-integrity.h +++ b/include/linux/bio-integrity.h @@ -11,6 +11,9 @@ enum bip_flags { BIP_DISK_NOCHECK = 1 << 3, /* disable disk integrity checking */ BIP_IP_CHECKSUM = 1 << 4, /* IP checksum */ BIP_COPY_USER = 1 << 5, /* Kernel bounce buffer in use */ + BIP_CHECK_GUARD = 1 << 6, /* guard check */ + BIP_CHECK_REFTAG = 1 << 7, /* reftag check */ + BIP_CHECK_APPTAG = 1 << 8, /* apptag check */ }; struct bio_integrity_payload { @@ -41,7 +44,8 @@ struct uio_meta { }; #define BIP_CLONE_FLAGS (BIP_MAPPED_INTEGRITY | BIP_CTRL_NOCHECK | \ - BIP_DISK_NOCHECK | BIP_IP_CHECKSUM) + BIP_DISK_NOCHECK | BIP_IP_CHECKSUM | \ + BIP_CHECK_GUARD | BIP_CHECK_REFTAG | BIP_CHECK_APPTAG) #ifdef CONFIG_BLK_DEV_INTEGRITY