Dave, SMC requires a configured pnet table to map Ethernet interfaces to RoCE adapter ports. For s390 there exists hardware support to group such devices. The first three patches cover the s390 pnetid support, enabling SMC-R usage on s390 without configuring an extra pnet table.
SMC currently requires RoCE adapters, and uses RDMA-techniques implemented with IB-verbs. But s390 offers another method for intra-CEC Shared Memory communication. The following seven patches implement a solution to run SMC traffic based on intra-CEC DMA, called SMC-D. Thanks, Ursula Hans Wippel (6): net/smc: add base infrastructure for SMC-D and ISM net/smc: add pnetid support for SMC-D and ISM net/smc: add SMC-D support in CLC messages net/smc: add SMC-D support in data transfer net/smc: add SMC-D support in af_smc net/smc: add SMC-D diag support Sebastian Ott (1): s390/ism: add device driver for internal shared memory Ursula Braun (3): net/smc: determine port attributes independent from pnet table net/smc: add pnetid support net/smc: optimize consumer cursor updates drivers/s390/net/Kconfig | 10 + drivers/s390/net/Makefile | 3 + drivers/s390/net/ism.h | 221 +++++++++++++++ drivers/s390/net/ism_drv.c | 623 ++++++++++++++++++++++++++++++++++++++++++ include/net/smc.h | 65 +++++ include/uapi/linux/smc_diag.h | 10 + net/smc/Makefile | 2 +- net/smc/af_smc.c | 228 ++++++++++++++-- net/smc/smc.h | 7 +- net/smc/smc_cdc.c | 86 +++++- net/smc/smc_cdc.h | 43 ++- net/smc/smc_clc.c | 193 +++++++++---- net/smc/smc_clc.h | 81 ++++-- net/smc/smc_core.c | 285 ++++++++++++++----- net/smc/smc_core.h | 72 +++-- net/smc/smc_diag.c | 18 +- net/smc/smc_ib.c | 134 +++++---- net/smc/smc_ib.h | 4 +- net/smc/smc_ism.c | 314 +++++++++++++++++++++ net/smc/smc_ism.h | 48 ++++ net/smc/smc_pnet.c | 157 +++++++++-- net/smc/smc_pnet.h | 16 ++ net/smc/smc_rx.c | 2 +- net/smc/smc_tx.c | 205 +++++++++++--- net/smc/smc_tx.h | 2 + 25 files changed, 2505 insertions(+), 324 deletions(-) create mode 100644 drivers/s390/net/ism.h create mode 100644 drivers/s390/net/ism_drv.c create mode 100644 net/smc/smc_ism.c create mode 100644 net/smc/smc_ism.h -- 2.16.4
