Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v6.19.11 2025-09-23T09:13:22+00:00 2025-09-23T09:13:22+00:00 Alexandra Winter wintera@linux.ibm.com 2025-09-18T11:04:59+00:00 urn:sha1:cc21191b584c6f7836b0f10774f8278b7cbfba10 Use struct dibs_dmb instead of struct smc_dmb and move the corresponding client tables to dibs_dev. Leave driver specific implementation details like sba in the device drivers. Register and unregister dmbs via dibs_dev_ops. A dmb is dedicated to a single client, but a dibs device can have dmbs for more than one client. Trigger dibs clients via dibs_client_ops->handle_irq(), when data is received into a dmb. For dibs_loopback replace scheduling an smcd receive tasklet with calling dibs_client_ops->handle_irq(). For loopback devices attach_dmb(), detach_dmb() and move_data() need to access the dmb tables, so move those to dibs_dev_ops in this patch as well. Remove remaining definitions of smc_loopback as they are no longer required, now that everything is in dibs_loopback. Note that struct ism_client and struct ism_dev are still required in smc until a follow-on patch moves event handling to dibs. (Loopback does not use events). Signed-off-by: Alexandra Winter <wintera@linux.ibm.com> Link: https://patch.msgid.link/20250918110500.1731261-14-wintera@linux.ibm.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> 2025-09-23T09:13:21+00:00 Alexandra Winter wintera@linux.ibm.com 2025-09-18T11:04:52+00:00 urn:sha1:cb990a45d7f6eb6dc495d2226a3005b284a5ee4f The first stage of loopback-ism was implemented as part of the SMC module [1]. Now that we have the dibs layer, provide access to a dibs_loopback device to all dibs clients. This is the first step of moving loopback-ism from net/smc/smc_loopback.* to drivers/dibs/dibs_loopback.*. One global structure lo_dev is allocated and added to the dibs devices. Follow-on patches will move functionality. Same as smc_loopback, dibs_loopback is provided by a config option. Note that there is no way to dynamically add or remove the loopback device. That could be a future improvement. When moving code to drivers/dibs, replace ism_ prefix with dibs_ prefix. As this is mostly a move of existing code, copyright and authors are unchanged. Link: https://lore.kernel.org/lkml/20240428060738.60843-1-guwen@linux.alibaba.com/ [1] Signed-off-by: Alexandra Winter <wintera@linux.ibm.com> Link: https://patch.msgid.link/20250918110500.1731261-7-wintera@linux.ibm.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>