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 SMC-D virtual ISM extension & loopback-ism [1].
[1] https://lore.kernel.org/netdev/[email protected]/
v8->v7:
- Patch #7: v7 mistakenly changed the type of gid_ext in
smc_clc_msg_accept_confirm to u64 instead of __be64 as previous versions
when fixing the rebase conflicts. So fix this mistake.
v7->v6:
Link: https://lore.kernel.org/netdev/[email protected]/
- Collect the Reviewed-by tag in v6;
- Patch #3: redefine the struct smc_clc_msg_accept_confirm;
- Patch #7: Because that the Patch #3 already adds '__packed' to
smc_clc_msg_accept_confirm, so Patch #7 doesn't need to do the same thing.
But this is a minor change, so I kept the 'Reviewed-by' tag.
Other changes in previous versions but not yet acked:
- Patch #1: Some minor changes in subject and fix the format issue
(length exceeds 80 columns) compared to v3.
- Patch #5: removes useless ini->feature_mask assignment in __smc_connect()
and smc_listen_v2_check() compared to v4.
- Patch #8: new added, compared to v3.
v6->v5:
Link: https://lore.kernel.org/netdev/[email protected]/
- Add 'Reviewed-by' label given in the previous versions:
* Patch #4, #6, #9, #10 have nothing changed since v3;
- Patch #2:
* fix the format issue (Alignment should match open parenthesis) compared to v5;
* remove useless clc->hdr.length assignment in smcr_clc_prep_confirm_accept()
compared to v5;
- Patch #3: new added compared to v5.
- Patch #7: some minor changes like aclc_v2->aclc or clc_v2->clc compared to v5
due to the introduction of Patch #3. Since there were no major changes, I kept
the 'Reviewed-by' label.
Other changes in previous versions but not yet acked:
- Patch #1: Some minor changes in subject and fix the format issue
(length exceeds 80 columns) compared to v3.
- Patch #5: removes useless ini->feature_mask assignment in __smc_connect()
and smc_listen_v2_check() compared to v4.
- Patch #8: new added, compared to v3.
v5->v4:
Link: https://lore.kernel.org/netdev/[email protected]/
- Patch #6: improve the comment of SMCD_CLC_MAX_V2_GID_ENTRIES;
- Patch #4: remove useless ini->feature_mask assignment;
v4->v3:
https://lore.kernel.org/netdev/[email protected]/
- Patch #6: use SMCD_CLC_MAX_V2_GID_ENTRIES to indicate the max gid
entries in CLC proposal and using SMC_MAX_V2_ISM_DEVS to indicate the
max devices to propose;
- Patch #6: use i and i+1 in smc_find_ism_v2_device_serv();
- Patch #2: replace the large if-else block in smc_clc_send_confirm_accept()
with 2 subfunctions;
- Fix missing byte order conversion of GID and token in CLC handshake,
which is in a separate patch sending to net:
https://lore.kernel.org/netdev/[email protected]/
- Patch #7: add extended GID in SMC-D lgr netlink attribute;
v3->v2:
https://lore.kernel.org/netdev/[email protected]/
- Rename smc_clc_fill_fce as smc_clc_fill_fce_v2x;
- Remove ISM_IDENT_MASK from drivers/s390/net/ism.h;
- Add explicitly assigning 'false' to ism_v2_capable in ism_dev_init();
- Remove smc_ism_set_v2_capable() helper for now, and introduce it in
later loopback-ism implementation;
v2->v1:
- Fix sparse complaint;
- Rebase to the latest net-next;
Wen Gu (10):
net/smc: rename some 'fce' to 'fce_v2x' for clarity
net/smc: introduce sub-functions for smc_clc_send_confirm_accept()
net/smc: unify the structs of accept or confirm message for v1 and v2
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 extended GID of virtual ISM device
net/smc: support extended GID in SMC-D lgr netlink attribute
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 | 7 -
drivers/s390/net/ism_drv.c | 57 ++----
include/linux/ism.h | 1 -
include/net/smc.h | 16 +-
include/uapi/linux/smc.h | 2 +
include/uapi/linux/smc_diag.h | 2 +
net/smc/af_smc.c | 118 ++++++++-----
net/smc/smc.h | 10 +-
net/smc/smc_clc.c | 318 +++++++++++++++++++++-------------
net/smc/smc_clc.h | 64 +++----
net/smc/smc_core.c | 37 ++--
net/smc/smc_core.h | 18 +-
net/smc/smc_diag.c | 9 +-
net/smc/smc_ism.c | 50 ++++--
net/smc/smc_ism.h | 30 +++-
net/smc/smc_pnet.c | 4 +-
16 files changed, 448 insertions(+), 295 deletions(-)
--
2.43.0
On 2023/12/19 22:26, 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 SMC-D virtual ISM extension & loopback-ism [1].
>
> [1] https://lore.kernel.org/netdev/[email protected]/
>
Thank you very much for your valuable time and help in this and past versions, Sandy, Wenjia and Jan.
I guess there are only Patch #1 #5 #8 left now:
- Patch #1: Some minor changes in subject and fix the format issue
(length exceeds 80 columns) compared to v3.
- Patch #5: removes useless ini->feature_mask assignment in __smc_connect()
and smc_listen_v2_check() compared to v4.
- Patch #8: new added, compared to v3.
Looking forward to any feedback. Thanks. :)
Best regards,
Wen Gu
> v8->v7:
> - Patch #7: v7 mistakenly changed the type of gid_ext in
> smc_clc_msg_accept_confirm to u64 instead of __be64 as previous versions
> when fixing the rebase conflicts. So fix this mistake.
>
> v7->v6:
> Link: https://lore.kernel.org/netdev/[email protected]/
> - Collect the Reviewed-by tag in v6;
> - Patch #3: redefine the struct smc_clc_msg_accept_confirm;
> - Patch #7: Because that the Patch #3 already adds '__packed' to
> smc_clc_msg_accept_confirm, so Patch #7 doesn't need to do the same thing.
> But this is a minor change, so I kept the 'Reviewed-by' tag.
>
> Other changes in previous versions but not yet acked:
> - Patch #1: Some minor changes in subject and fix the format issue
> (length exceeds 80 columns) compared to v3.
> - Patch #5: removes useless ini->feature_mask assignment in __smc_connect()
> and smc_listen_v2_check() compared to v4.
> - Patch #8: new added, compared to v3.
>
> v6->v5:
> Link: https://lore.kernel.org/netdev/[email protected]/
> - Add 'Reviewed-by' label given in the previous versions:
> * Patch #4, #6, #9, #10 have nothing changed since v3;
> - Patch #2:
> * fix the format issue (Alignment should match open parenthesis) compared to v5;
> * remove useless clc->hdr.length assignment in smcr_clc_prep_confirm_accept()
> compared to v5;
> - Patch #3: new added compared to v5.
> - Patch #7: some minor changes like aclc_v2->aclc or clc_v2->clc compared to v5
> due to the introduction of Patch #3. Since there were no major changes, I kept
> the 'Reviewed-by' label.
>
> Other changes in previous versions but not yet acked:
> - Patch #1: Some minor changes in subject and fix the format issue
> (length exceeds 80 columns) compared to v3.
> - Patch #5: removes useless ini->feature_mask assignment in __smc_connect()
> and smc_listen_v2_check() compared to v4.
> - Patch #8: new added, compared to v3.
>
> v5->v4:
> Link: https://lore.kernel.org/netdev/[email protected]/
> - Patch #6: improve the comment of SMCD_CLC_MAX_V2_GID_ENTRIES;
> - Patch #4: remove useless ini->feature_mask assignment;
>
> v4->v3:
> https://lore.kernel.org/netdev/[email protected]/
> - Patch #6: use SMCD_CLC_MAX_V2_GID_ENTRIES to indicate the max gid
> entries in CLC proposal and using SMC_MAX_V2_ISM_DEVS to indicate the
> max devices to propose;
> - Patch #6: use i and i+1 in smc_find_ism_v2_device_serv();
> - Patch #2: replace the large if-else block in smc_clc_send_confirm_accept()
> with 2 subfunctions;
> - Fix missing byte order conversion of GID and token in CLC handshake,
> which is in a separate patch sending to net:
> https://lore.kernel.org/netdev/[email protected]/
> - Patch #7: add extended GID in SMC-D lgr netlink attribute;
>
> v3->v2:
> https://lore.kernel.org/netdev/[email protected]/
> - Rename smc_clc_fill_fce as smc_clc_fill_fce_v2x;
> - Remove ISM_IDENT_MASK from drivers/s390/net/ism.h;
> - Add explicitly assigning 'false' to ism_v2_capable in ism_dev_init();
> - Remove smc_ism_set_v2_capable() helper for now, and introduce it in
> later loopback-ism implementation;
>
> v2->v1:
> - Fix sparse complaint;
> - Rebase to the latest net-next;
>
> Wen Gu (10):
> net/smc: rename some 'fce' to 'fce_v2x' for clarity
> net/smc: introduce sub-functions for smc_clc_send_confirm_accept()
> net/smc: unify the structs of accept or confirm message for v1 and v2
> 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 extended GID of virtual ISM device
> net/smc: support extended GID in SMC-D lgr netlink attribute
> 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 | 7 -
> drivers/s390/net/ism_drv.c | 57 ++----
> include/linux/ism.h | 1 -
> include/net/smc.h | 16 +-
> include/uapi/linux/smc.h | 2 +
> include/uapi/linux/smc_diag.h | 2 +
> net/smc/af_smc.c | 118 ++++++++-----
> net/smc/smc.h | 10 +-
> net/smc/smc_clc.c | 318 +++++++++++++++++++++-------------
> net/smc/smc_clc.h | 64 +++----
> net/smc/smc_core.c | 37 ++--
> net/smc/smc_core.h | 18 +-
> net/smc/smc_diag.c | 9 +-
> net/smc/smc_ism.c | 50 ++++--
> net/smc/smc_ism.h | 30 +++-
> net/smc/smc_pnet.c | 4 +-
> 16 files changed, 448 insertions(+), 295 deletions(-)
>
Hello:
This series was applied to netdev/net-next.git (main)
by David S. Miller <[email protected]>:
On Tue, 19 Dec 2023 22:26:06 +0800 you 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:
>
> [...]
Here is the summary with links:
- [net-next,v8,01/10] net/smc: rename some 'fce' to 'fce_v2x' for clarity
https://git.kernel.org/netdev/net-next/c/ac053a169c71
- [net-next,v8,02/10] net/smc: introduce sub-functions for smc_clc_send_confirm_accept()
https://git.kernel.org/netdev/net-next/c/5205ac4483b6
- [net-next,v8,03/10] net/smc: unify the structs of accept or confirm message for v1 and v2
https://git.kernel.org/netdev/net-next/c/9505450d55b0
- [net-next,v8,04/10] net/smc: support SMCv2.x supplemental features negotiation
https://git.kernel.org/netdev/net-next/c/ece60db3a4ce
- [net-next,v8,05/10] net/smc: introduce virtual ISM device support feature
https://git.kernel.org/netdev/net-next/c/00e006a25718
- [net-next,v8,06/10] net/smc: define a reserved CHID range for virtual ISM devices
https://git.kernel.org/netdev/net-next/c/8dd512df3c98
- [net-next,v8,07/10] net/smc: compatible with 128-bits extended GID of virtual ISM device
https://git.kernel.org/netdev/net-next/c/b40584d14570
- [net-next,v8,08/10] net/smc: support extended GID in SMC-D lgr netlink attribute
https://git.kernel.org/netdev/net-next/c/01fd1617dbc6
- [net-next,v8,09/10] net/smc: disable SEID on non-s390 archs where virtual ISM may be used
https://git.kernel.org/netdev/net-next/c/c6b8b8eb4990
- [net-next,v8,10/10] net/smc: manage system EID in SMC stack instead of ISM driver
https://git.kernel.org/netdev/net-next/c/b3bf76024f64
You are awesome, thank you!
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