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iscsi/iser-target: Add fabric_prot_type attribute support

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This patch updates iscsi/iser-target to add a new fabric_prot_type
TPG attribute for iser-target, used for controlling LLD level
protection into LIO when the backend device does not support T10-PI.

This is required for ib_isert to enable WRITE_STRIP + READ_INSERT
hardware offloads.

It's disabled by default and controls which se_sesion->sess_prot_type
are set at iscsi_target_locate_portal() session registration time.

Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Martin Petersen <martin.petersen@oracle.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger
2015-03-29 19:36:16 -07:00
parent 64b1688774
commit 901c04a33f
4 changed files with 44 additions and 0 deletions
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2
include/target/iscsi/iscsi_target_core.h
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@@ -62,6 +62,7 @@
#define TA_CACHE_CORE_NPS 0
/* T10 protection information disabled by default */
#define TA_DEFAULT_T10_PI 0
#define TA_DEFAULT_FABRIC_PROT_TYPE 0
#define ISCSI_IOV_DATA_BUFFER 5
@@ -772,6 +773,7 @@ struct iscsi_tpg_attrib {
u32 demo_mode_discovery;
u32 default_erl;
u8 t10_pi;
u32 fabric_prot_type;
struct iscsi_portal_group *tpg;
};