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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-07 22:44:57 +0000 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-18 09:53:12 +0000 |
| commit | 41861fa831afd4b5006f0042e1f701360330351e (patch) | |
| tree | 57818e9a7b160cd6b0bb17e74deb9565d238bcc5 /include/target | |
| parent | 499bf77b0169605a23c38351e3849066fe696877 (diff) | |
| download | lwn-41861fa831afd4b5006f0042e1f701360330351e.tar.gz lwn-41861fa831afd4b5006f0042e1f701360330351e.zip | |
target/sbc: Add DIF TYPE1+TYPE3 read/write verify emulation
This patch adds support for DIF read/write verify emulation
for TARGET_DIF_TYPE1_PROT + TARGET_DIF_TYPE3_PROT operation.
This includes sbc_dif_verify_write() + sbc_dif_verify_read()
calls accessable by backend drivers to perform DIF verify
for SGL based data and protection information.
Also included is sbc_dif_copy_prot() logic to copy protection
information to/from backend provided protection SGLs.
Based on scsi_debug.c DIF TYPE1+TYPE3 emulation.
v2 changes:
- Select CRC_T10DIF for TARGET_CORE in Kconfig (Fengguang)
- Drop IP checksum logic from sbc_dif_v1_verify (MKP)
- Fix offset on app_tag = 0xffff in sbc_dif_verify_read()
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_backend.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h index 0dc2745b9b18..7020e33e742e 100644 --- a/include/target/target_core_backend.h +++ b/include/target/target_core_backend.h @@ -73,6 +73,10 @@ sense_reason_t sbc_execute_unmap(struct se_cmd *cmd, sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv, sector_t lba, sector_t nolb), void *priv); +sense_reason_t sbc_dif_verify_write(struct se_cmd *, sector_t, unsigned int, + unsigned int, struct scatterlist *, int); +sense_reason_t sbc_dif_verify_read(struct se_cmd *, sector_t, unsigned int, + unsigned int, struct scatterlist *, int); void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *); int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *); |