We do hostname issue on BMC 3.09 and SUSL 15 (4.12.14-266.g5cc7bcc-default). We still met Unable to send RAW command (channel=0x0 netfn=0x32 lun=0x0 cmd=0x6b rsp=0xff): Unspecified error.

linux-pgt4:~ # ipmitool raw 0x32 0x6B 1 0
Unable to send RAW command (channel=0x0 netfn=0x32 lun=0x0 cmd=0x6b rsp=0xff): Unspecified error
linux-pgt4:~ # ipmitool -vvvvv raw 0x32 0x6B 1 0
Using ipmi device 0
Set IPMB address to 0x20
OpenIPMI Request Message Header:
  netfn     = 0x6
  cmd       = 0x1
Sending request 0x1 to System Interface
Got message:  type      = 1
  channel   = 0xf
  msgid     = 0
  netfn     = 0x7
  cmd       = 0x1
  data_len  = 16
  data      = 002001030902bfd1b300020200000000
Iana: 46033
Running Get PICMG Properties my_addr 0x20, transit 0, target 0
OpenIPMI Request Message Header:
  netfn     = 0x2c
  cmd       = 0x0
OpenIPMI Request Message Data (1 bytes)
00
Sending request 0x0 to System Interface
Got message:  type      = 1
  channel   = 0xf
  msgid     = 1
  netfn     = 0x2d
  cmd       = 0x0
  data_len  = 1
  data      = c1
Error response 0xc1 from Get PICMG Properities
Running Get VSO Capabilities my_addr 0x20, transit 0, target 0
OpenIPMI Request Message Header:
  netfn     = 0x2c
  cmd       = 0x0
OpenIPMI Request Message Data (1 bytes)
03
Sending request 0x0 to System Interface
Got message:  type      = 1
  channel   = 0xf
  msgid     = 2
  netfn     = 0x2d
  cmd       = 0x0
  data_len  = 1
  data      = c1
Invalid completion code received: Invalid command
Acquire IPMB address
Discovered IPMB address 0x0
Interface address: my_addr 0x20 transit 0:0 target 0x20:0 ipmb_target 0

RAW REQ (channel=0x0 netfn=0x32 lun=0x0 cmd=0x6b data_len=2)
RAW REQUEST (2 bytes)
01 00
OpenIPMI Request Message Header:
 netfn     = 0x32
  cmd       = 0x6b
OpenIPMI Request Message Data (2 bytes)
01 00
Sending request 0x6b to System Interface
Got message:  type      = 1
  channel   = 0xf
  msgid     = 3
  netfn     = 0x33
  cmd       = 0x6b
  data_len  = 1
  data      = ff
Unable to send RAW command (channel=0x0 netfn=0x32 lun=0x0 cmd=0x6b rsp=0xff): Unspecified error
linux-pgt4:~ #
***************************************************************************

                I checked the SLE15 ipmi drivers and found a bug in case of multi-part read in “ipmi_ssif.c” source file.

Bug:

File: “ipmi_ssif.c”

Function/API : static void msg_done_handler(struct ssif_info *ssif_info, int result,
                                                     unsigned char *data, unsigned int len)

In case of mutlipart read, they are using ssif_info->multi_pos flag to check with the block number. The block number starts from zero(0) for second block but multi_pos starts from 1, so +1 should be added to the block number. Check the below code. Also attached the “ipmi_ssif.c” with this changes. 

                                                                                                                                                      
Bug:  
} else if (blocknum != ssif_info->multi_pos) {  
Fix:
} else if (blocknum + 1 != ssif_info->multi_pos) {                                                           
                                                /*
                                                * Out of sequence block, just abort.  Block
                                                * numbers start at zero for the second block,
                                                * but multi_pos starts at one, so the +1.
                                                */
                                                result = -EIO;
                                } else {