Added more comments.

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@856 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2009-05-16 11:20:52 +00:00
parent 76bdb860f0
commit 812d04fa03
3 changed files with 230 additions and 2 deletions
+33
View File
@@ -39,11 +39,21 @@
#include <rdma/ib_mad.h>
enum {
/*
* See also section 13.4.7 Status Field, table 115 MAD Common Status
* Field Bit Values and also section 16.3.1.1 Status Field in the
* InfiniBand Architecture Specification.
*/
DM_MAD_STATUS_UNSUP_METHOD = 0x0008,
DM_MAD_STATUS_UNSUP_METHOD_ATTR = 0x000c,
DM_MAD_STATUS_INVALID_FIELD = 0x001c,
DM_MAD_STATUS_NO_IOC = 0x0100,
/*
* See also the Device Management chapter, section 16.3.3 Attributes,
* table 279 Device Management Attributes in the InfiniBand
* Architecture Specification.
*/
DM_ATTR_CLASS_PORT_INFO = 0x01,
DM_ATTR_IOU_INFO = 0x10,
DM_ATTR_IOC_PROFILE = 0x11,
@@ -54,6 +64,17 @@ struct ib_dm_hdr {
u8 reserved[28];
};
/*
* Structure of management datagram sent by the SRP target implementation.
* Contains a management datagram header, reliable multi-packet transaction
* protocol (RMPP) header and ib_dm_hdr. Notes:
* - The SRP target implementation does not use RMPP or ib_dm_hdr when sending
* management datagrams.
* - The header size must be exactly 64 bytes (IB_MGMT_DEVICE_HDR), since this
* is the header size that is passed to ib_create_send_mad() in ib_srpt.c.
* - The maximum supported size for a management datagram when not using RMPP
* is 256 bytes -- 64 bytes header and 192 (IB_MGMT_DEVICE_DATA) bytes data.
*/
struct ib_dm_mad {
struct ib_mad_hdr mad_hdr;
struct ib_rmpp_hdr rmpp_hdr;
@@ -61,6 +82,10 @@ struct ib_dm_mad {
u8 data[IB_MGMT_DEVICE_DATA];
};
/*
* IOUnitInfo as defined in section 16.3.3.3 IOUnitInfo of the InfiniBand
* Architecture Specification.
*/
struct ib_dm_iou_info {
__be16 change_id;
u8 max_controllers;
@@ -68,6 +93,10 @@ struct ib_dm_iou_info {
u8 controller_list[128];
};
/*
* IOControllerprofile as defined in section 16.3.3.4 IOControllerProfile of
* the InfiniBand Architecture Specification.
*/
struct ib_dm_ioc_profile {
__be64 guid;
__be32 vendor_id;
@@ -99,6 +128,10 @@ struct ib_dm_svc_entry {
u64 id;
};
/*
* See also section 16.3.3.5 ServiceEntries in the InfiniBand Architecture
* Specification. See also section B.7, table B.8 in the T10 SRP r16a document.
*/
struct ib_dm_svc_entries {
struct ib_dm_svc_entry service_entries[4];
};