sd_dif.c (9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e) sd_dif.c (e9f5f44ad3725335d9c559c3c22cd3726152a7b1)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * sd_dif.c - SCSI Data Integrity Field
4 *
5 * Copyright (C) 2007, 2008 Oracle Corporation
6 * Written by: Martin K. Petersen <martin.petersen@oracle.com>
7 */
8

--- 33 unchanged lines hidden (view full) ---

42 if (!dix) {
43 blk_integrity_unregister(disk);
44 return;
45 }
46
47 memset(&bi, 0, sizeof(bi));
48
49 /* Enable DMA of protection information */
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * sd_dif.c - SCSI Data Integrity Field
4 *
5 * Copyright (C) 2007, 2008 Oracle Corporation
6 * Written by: Martin K. Petersen <martin.petersen@oracle.com>
7 */
8

--- 33 unchanged lines hidden (view full) ---

42 if (!dix) {
43 blk_integrity_unregister(disk);
44 return;
45 }
46
47 memset(&bi, 0, sizeof(bi));
48
49 /* Enable DMA of protection information */
50 if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP) {
51 if (type == T10_PI_TYPE3_PROTECTION)
52 bi.profile = &t10_pi_type3_ip;
53 else
54 bi.profile = &t10_pi_type1_ip;
50 if (scsi_host_get_guard(sdkp->device->host) & SHOST_DIX_GUARD_IP)
51 bi.csum_type = BLK_INTEGRITY_CSUM_IP;
52 else
53 bi.csum_type = BLK_INTEGRITY_CSUM_CRC;
55
54
56 bi.flags |= BLK_INTEGRITY_IP_CHECKSUM;
57 } else
58 if (type == T10_PI_TYPE3_PROTECTION)
59 bi.profile = &t10_pi_type3_crc;
60 else
61 bi.profile = &t10_pi_type1_crc;
55 if (type != T10_PI_TYPE3_PROTECTION)
56 bi.flags |= BLK_INTEGRITY_REF_TAG;
62
63 bi.tuple_size = sizeof(struct t10_pi_tuple);
64
65 if (dif && type) {
66 bi.flags |= BLK_INTEGRITY_DEVICE_CAPABLE;
67
68 if (!sdkp->ATO)
69 goto out;
70
71 if (type == T10_PI_TYPE3_PROTECTION)
72 bi.tag_size = sizeof(u16) + sizeof(u32);
73 else
74 bi.tag_size = sizeof(u16);
75 }
76
77 sd_first_printk(KERN_NOTICE, sdkp,
78 "Enabling DIX %s, application tag size %u bytes\n",
57
58 bi.tuple_size = sizeof(struct t10_pi_tuple);
59
60 if (dif && type) {
61 bi.flags |= BLK_INTEGRITY_DEVICE_CAPABLE;
62
63 if (!sdkp->ATO)
64 goto out;
65
66 if (type == T10_PI_TYPE3_PROTECTION)
67 bi.tag_size = sizeof(u16) + sizeof(u32);
68 else
69 bi.tag_size = sizeof(u16);
70 }
71
72 sd_first_printk(KERN_NOTICE, sdkp,
73 "Enabling DIX %s, application tag size %u bytes\n",
79 bi.profile->name, bi.tag_size);
74 blk_integrity_profile_name(&bi), bi.tag_size);
80out:
81 blk_integrity_register(disk, &bi);
82}
83
75out:
76 blk_integrity_register(disk, &bi);
77}
78