LU-10472 osc: add T10PI support for RPC checksum

[fs/lustre-release.git] / lustre / osd-ldiskfs / osd_handler.c

diff --git a/lustre/osd-ldiskfs/osd_handler.c b/lustre/osd-ldiskfs/osd_handler.c
index 80814a8..70ae175 100644 (file)
--- a/lustre/osd-ldiskfs/osd_handler.c
+++ b/lustre/osd-ldiskfs/osd_handler.c
@@ -2146,17 +2146,22 @@ out:
  * Concurrency: doesn't access mutable data.
  */
 static void osd_conf_get(const struct lu_env *env,
-                         const struct dt_device *dev,
-                         struct dt_device_param *param)
+                        const struct dt_device *dev,
+                        struct dt_device_param *param)
 {
-        struct super_block *sb = osd_sb(osd_dt_dev(dev));
-       int                ea_overhead;
+       struct osd_device *d = osd_dt_dev(dev);
+       struct super_block *sb = osd_sb(d);
+       struct block_device *bdev = sb->s_bdev;
+       struct blk_integrity *bi = bdev_get_integrity(bdev);
+       unsigned short interval;
+       int ea_overhead;
+       const char *name;
 
-        /*
-         * XXX should be taken from not-yet-existing fs abstraction layer.
-         */
-        param->ddp_max_name_len = LDISKFS_NAME_LEN;
-        param->ddp_max_nlink    = LDISKFS_LINK_MAX;
+       /*
+        * XXX should be taken from not-yet-existing fs abstraction layer.
+        */
+       param->ddp_max_name_len = LDISKFS_NAME_LEN;
+       param->ddp_max_nlink    = LDISKFS_LINK_MAX;
        param->ddp_symlink_max  = sb->s_blocksize;
        param->ddp_mount_type     = LDD_MT_LDISKFS;
        if (ldiskfs_has_feature_extents(sb))
@@ -2205,6 +2210,43 @@ static void osd_conf_get(const struct lu_env *env,
        else
 #endif
                param->ddp_brw_size = DT_DEF_BRW_SIZE;
+
+       param->ddp_t10_cksum_type = 0;
+       if (bi) {
+               interval = blk_integrity_interval(bi);
+               name = blk_integrity_name(bi);
+               /*
+                * Expected values:
+                * T10-DIF-TYPE1-CRC
+                * T10-DIF-TYPE3-CRC
+                * T10-DIF-TYPE1-IP
+                * T10-DIF-TYPE3-IP
+                */
+               if (strncmp(name, "T10-DIF-TYPE",
+                           sizeof("T10-DIF-TYPE") - 1) == 0) {
+                       /* also skip "1/3-" at end */
+                       const int type_off = sizeof("T10-DIF-TYPE.");
+
+                       if (interval != 512 && interval != 4096)
+                               CERROR("%s: unsupported T10PI sector size %u\n",
+                                      d->od_svname, interval);
+                       else if (strcmp(name + type_off, "CRC") == 0)
+                               param->ddp_t10_cksum_type = interval == 512 ?
+                                       OBD_CKSUM_T10CRC512 :
+                                       OBD_CKSUM_T10CRC4K;
+                       else if (strcmp(name + type_off, "IP") == 0)
+                               param->ddp_t10_cksum_type = interval == 512 ?
+                                       OBD_CKSUM_T10IP512 :
+                                       OBD_CKSUM_T10IP4K;
+                       else
+                               CERROR("%s: unsupported checksum type of "
+                                      "T10PI type '%s'",
+                                      d->od_svname, name);
+               } else {
+                       CERROR("%s: unsupported T10PI type '%s'",
+                              d->od_svname, name);
+               }
+       }
 }
 
 /*