From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> Greetings all, This patch enables the default usage of the SSE v4.2 CRC32C instruction for iSCSI target HeaderDigests and DataDigests offload using libcrypto and the crc32c-intel.ko module on Nehalem systems. This was originally disabled by default in commit 047eeb75ee8f0 due to some issues with HeaderDigests=CRC32C that where encountered with the Open-iSCSI initiator shipping with RHEL 6 B1. This has now been identified as initiator side breakage, so we go ahead and enable crc32c_x86_offload=1 by default when available. Many thanks again to Mike Christie for verifying the Open-iSCSI side issue! Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> --- drivers/target/lio-target/iscsi_target_core.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/target/lio-target/iscsi_target_core.h b/drivers/target/lio-target/iscsi_target_core.h index de962c8..882bd52 100644 --- a/drivers/target/lio-target/iscsi_target_core.h +++ b/drivers/target/lio-target/iscsi_target_core.h @@ -84,7 +84,7 @@ /* Disabled by default in production mode w/ explict ACLs */ #define TA_PROD_MODE_WRITE_PROTECT 0 /* Disabled by default for the moment for testing... */ -#define TA_CRC32C_X86_OFFLOAD 0 +#define TA_CRC32C_X86_OFFLOAD 1 #define TA_CACHE_CORE_NPS 0 /* struct iscsi_data_count->type */ -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
