From 41861fa831afd4b5006f0042e1f701360330351e Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Tue, 7 Jan 2014 22:44:57 +0000 Subject: 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 Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Sagi Grimberg Cc: Or Gerlitz Signed-off-by: Nicholas Bellinger --- drivers/target/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/target/Kconfig') diff --git a/drivers/target/Kconfig b/drivers/target/Kconfig index 18303686eb58..50aad2eeed6e 100644 --- a/drivers/target/Kconfig +++ b/drivers/target/Kconfig @@ -3,6 +3,7 @@ menuconfig TARGET_CORE tristate "Generic Target Core Mod (TCM) and ConfigFS Infrastructure" depends on SCSI && BLOCK select CONFIGFS_FS + select CRC_T10DIF default n help Say Y or M here to enable the TCM Storage Engine and ConfigFS enabled -- cgit 1.4.1