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[net-next,0/7] net/smc: implement SMCv2.1 virtual ISM device support

Message ID 1700402277-93750-1-git-send-email-guwen@linux.alibaba.com (mailing list archive)
Headers show
Series net/smc: implement SMCv2.1 virtual ISM device support | expand

Message

Wen Gu Nov. 19, 2023, 1:57 p.m. UTC
The fourth edition of SMCv2 adds the SMC version 2.1 feature updates for
SMC-Dv2 with virtual ISM. Virtual ISM are created and supported mainly by
OS or hypervisor software, comparable to IBM ISM which is based on platform
firmware or hardware.

With the introduction of virtual ISM, SMCv2.1 makes some updates:

- Introduce feature bitmask to indicate supplemental features.
- Reserve a range of CHIDs for virtual ISM.
- Support extended GIDs (128 bits) in CLC handshake.

So this patch set aims to implement these updates in Linux kernel. And it
acts as the first part of the new version of [1].

[1] https://lore.kernel.org/netdev/1695568613-125057-1-git-send-email-guwen@linux.alibaba.com/

Wen Gu (7):
  net/smc: Rename some variable 'fce' to 'fce_v2x' for clarity
  net/smc: support SMCv2.x supplemental features negotiation
  net/smc: introduce virtual ISM device support feature
  net/smc: define a reserved CHID range for virtual ISM devices
  net/smc: compatible with 128-bits extend GID of virtual ISM device
  net/smc: disable SEID on non-s390 archs where virtual ISM may be used
  net/smc: manage system EID in SMC stack instead of ISM driver

 drivers/s390/net/ism.h     |  6 ---
 drivers/s390/net/ism_drv.c | 54 +++++++--------------------
 include/linux/ism.h        |  1 -
 include/net/smc.h          | 16 +++++---
 net/smc/af_smc.c           | 68 ++++++++++++++++++++++++++-------
 net/smc/smc.h              |  7 ++++
 net/smc/smc_clc.c          | 93 ++++++++++++++++++++++++++++++++--------------
 net/smc/smc_clc.h          | 22 +++++++----
 net/smc/smc_core.c         | 30 ++++++++++-----
 net/smc/smc_core.h         |  8 ++--
 net/smc/smc_diag.c         |  7 +++-
 net/smc/smc_ism.c          | 57 ++++++++++++++++++++--------
 net/smc/smc_ism.h          | 31 +++++++++++++++-
 net/smc/smc_pnet.c         |  4 +-
 14 files changed, 269 insertions(+), 135 deletions(-)

Comments

Wenjia Zhang Nov. 24, 2023, 1:11 p.m. UTC | #1
On 19.11.23 14:57, Wen Gu wrote:
> The fourth edition of SMCv2 adds the SMC version 2.1 feature updates for
> SMC-Dv2 with virtual ISM. Virtual ISM are created and supported mainly by
> OS or hypervisor software, comparable to IBM ISM which is based on platform
> firmware or hardware.
> 
> With the introduction of virtual ISM, SMCv2.1 makes some updates:
> 
> - Introduce feature bitmask to indicate supplemental features.
> - Reserve a range of CHIDs for virtual ISM.
> - Support extended GIDs (128 bits) in CLC handshake.
> 
> So this patch set aims to implement these updates in Linux kernel. And it
> acts as the first part of the new version of [1].
> 
> [1] https://lore.kernel.org/netdev/1695568613-125057-1-git-send-email-guwen@linux.alibaba.com/
> 
> Wen Gu (7):
>    net/smc: Rename some variable 'fce' to 'fce_v2x' for clarity
>    net/smc: support SMCv2.x supplemental features negotiation
>    net/smc: introduce virtual ISM device support feature
>    net/smc: define a reserved CHID range for virtual ISM devices
>    net/smc: compatible with 128-bits extend GID of virtual ISM device
>    net/smc: disable SEID on non-s390 archs where virtual ISM may be used
>    net/smc: manage system EID in SMC stack instead of ISM driver
> 
>   drivers/s390/net/ism.h     |  6 ---
>   drivers/s390/net/ism_drv.c | 54 +++++++--------------------
>   include/linux/ism.h        |  1 -
>   include/net/smc.h          | 16 +++++---
>   net/smc/af_smc.c           | 68 ++++++++++++++++++++++++++-------
>   net/smc/smc.h              |  7 ++++
>   net/smc/smc_clc.c          | 93 ++++++++++++++++++++++++++++++++--------------
>   net/smc/smc_clc.h          | 22 +++++++----
>   net/smc/smc_core.c         | 30 ++++++++++-----
>   net/smc/smc_core.h         |  8 ++--
>   net/smc/smc_diag.c         |  7 +++-
>   net/smc/smc_ism.c          | 57 ++++++++++++++++++++--------
>   net/smc/smc_ism.h          | 31 +++++++++++++++-
>   net/smc/smc_pnet.c         |  4 +-
>   14 files changed, 269 insertions(+), 135 deletions(-)
> 

Hi Wen Gu,

Just FYI, the review is still on going and some tests on our plateform 
still need to do. I'll give you my comments as soon as the testing is 
done. I think it would be at the beginning of next week.

Thanks,
Wenjia
Wen Gu Nov. 24, 2023, 1:34 p.m. UTC | #2
On 2023/11/24 21:11, Wenjia Zhang wrote:
> 
> 
> On 19.11.23 14:57, Wen Gu wrote:
>> The fourth edition of SMCv2 adds the SMC version 2.1 feature updates for
>> SMC-Dv2 with virtual ISM. Virtual ISM are created and supported mainly by
>> OS or hypervisor software, comparable to IBM ISM which is based on platform
>> firmware or hardware.
>>
>> With the introduction of virtual ISM, SMCv2.1 makes some updates:
>>
>> - Introduce feature bitmask to indicate supplemental features.
>> - Reserve a range of CHIDs for virtual ISM.
>> - Support extended GIDs (128 bits) in CLC handshake.
>>
>> So this patch set aims to implement these updates in Linux kernel. And it
>> acts as the first part of the new version of [1].
>>
>> [1] https://lore.kernel.org/netdev/1695568613-125057-1-git-send-email-guwen@linux.alibaba.com/
>>
>> Wen Gu (7):
>>    net/smc: Rename some variable 'fce' to 'fce_v2x' for clarity
>>    net/smc: support SMCv2.x supplemental features negotiation
>>    net/smc: introduce virtual ISM device support feature
>>    net/smc: define a reserved CHID range for virtual ISM devices
>>    net/smc: compatible with 128-bits extend GID of virtual ISM device
>>    net/smc: disable SEID on non-s390 archs where virtual ISM may be used
>>    net/smc: manage system EID in SMC stack instead of ISM driver
>>
>>   drivers/s390/net/ism.h     |  6 ---
>>   drivers/s390/net/ism_drv.c | 54 +++++++--------------------
>>   include/linux/ism.h        |  1 -
>>   include/net/smc.h          | 16 +++++---
>>   net/smc/af_smc.c           | 68 ++++++++++++++++++++++++++-------
>>   net/smc/smc.h              |  7 ++++
>>   net/smc/smc_clc.c          | 93 ++++++++++++++++++++++++++++++++--------------
>>   net/smc/smc_clc.h          | 22 +++++++----
>>   net/smc/smc_core.c         | 30 ++++++++++-----
>>   net/smc/smc_core.h         |  8 ++--
>>   net/smc/smc_diag.c         |  7 +++-
>>   net/smc/smc_ism.c          | 57 ++++++++++++++++++++--------
>>   net/smc/smc_ism.h          | 31 +++++++++++++++-
>>   net/smc/smc_pnet.c         |  4 +-
>>   14 files changed, 269 insertions(+), 135 deletions(-)
>>
> 
> Hi Wen Gu,
> 
> Just FYI, the review is still on going and some tests on our plateform still need to do. I'll give you my comments as 
> soon as the testing is done. I think it would be at the beginning of next week.
> 
> Thanks,
> Wenjia

Hi Wenjian,

Thank you very much. I appreciate that you help to test them on your platform since I can only test
them with loopback-ism.

And I am going to send a new version which is rebased to the latest net-next and fix two existing
comments. If the current tests have not started yet, could you please test based on my upcoming v2 ?

Thanks and regards,
Wen Gu
Wen Gu Nov. 24, 2023, 1:37 p.m. UTC | #3
On 2023/11/24 21:34, Wen Gu wrote:
> 
> 
> On 2023/11/24 21:11, Wenjia Zhang wrote:
>>
>>
>> On 19.11.23 14:57, Wen Gu wrote:
>>> The fourth edition of SMCv2 adds the SMC version 2.1 feature updates for
>>> SMC-Dv2 with virtual ISM. Virtual ISM are created and supported mainly by
>>> OS or hypervisor software, comparable to IBM ISM which is based on platform
>>> firmware or hardware.
>>>
>>> With the introduction of virtual ISM, SMCv2.1 makes some updates:
>>>
>>> - Introduce feature bitmask to indicate supplemental features.
>>> - Reserve a range of CHIDs for virtual ISM.
>>> - Support extended GIDs (128 bits) in CLC handshake.
>>>
>>> So this patch set aims to implement these updates in Linux kernel. And it
>>> acts as the first part of the new version of [1].
>>>
>>> [1] https://lore.kernel.org/netdev/1695568613-125057-1-git-send-email-guwen@linux.alibaba.com/
>>>
>>> Wen Gu (7):
>>>    net/smc: Rename some variable 'fce' to 'fce_v2x' for clarity
>>>    net/smc: support SMCv2.x supplemental features negotiation
>>>    net/smc: introduce virtual ISM device support feature
>>>    net/smc: define a reserved CHID range for virtual ISM devices
>>>    net/smc: compatible with 128-bits extend GID of virtual ISM device
>>>    net/smc: disable SEID on non-s390 archs where virtual ISM may be used
>>>    net/smc: manage system EID in SMC stack instead of ISM driver
>>>
>>>   drivers/s390/net/ism.h     |  6 ---
>>>   drivers/s390/net/ism_drv.c | 54 +++++++--------------------
>>>   include/linux/ism.h        |  1 -
>>>   include/net/smc.h          | 16 +++++---
>>>   net/smc/af_smc.c           | 68 ++++++++++++++++++++++++++-------
>>>   net/smc/smc.h              |  7 ++++
>>>   net/smc/smc_clc.c          | 93 ++++++++++++++++++++++++++++++++--------------
>>>   net/smc/smc_clc.h          | 22 +++++++----
>>>   net/smc/smc_core.c         | 30 ++++++++++-----
>>>   net/smc/smc_core.h         |  8 ++--
>>>   net/smc/smc_diag.c         |  7 +++-
>>>   net/smc/smc_ism.c          | 57 ++++++++++++++++++++--------
>>>   net/smc/smc_ism.h          | 31 +++++++++++++++-
>>>   net/smc/smc_pnet.c         |  4 +-
>>>   14 files changed, 269 insertions(+), 135 deletions(-)
>>>
>>
>> Hi Wen Gu,
>>
>> Just FYI, the review is still on going and some tests on our plateform still need to do. I'll give you my comments as 
>> soon as the testing is done. I think it would be at the beginning of next week.
>>
>> Thanks,
>> Wenjia
> 
> Hi Wenjian,
Wenjia.

Sorry for the typo.

> 
> Thank you very much. I appreciate that you help to test them on your platform since I can only test
> them with loopback-ism.
> 
> And I am going to send a new version which is rebased to the latest net-next and fix two existing
> comments. If the current tests have not started yet, could you please test based on my upcoming v2 ?
> 
> Thanks and regards,
> Wen Gu