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OpenCloudOS-Kernel
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OpenCloudOS-Kernel/drivers/infiniband/sw/siw/Kconfig

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rdma/siw: addition to kernel build environment Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-06-21 00:21:33 +08:00
config RDMA_SIW
tristate "Software RDMA over TCP/IP (iWARP) driver"
RMDA/siw: Require a 64 bit arch The new siw driver fails to build on i386 with drivers/infiniband/sw/siw/siw_qp.c:1025:3: error: invalid output size for constraint '+q' smp_store_mb(*cq->notify, SIW_NOTIFY_NOT); As it is using 64 bit values with the smp_store_mb. Since the entire scheme here seems questionable, and we are in the merge window, fix the compile failures by disabling 32 bit support on this driver. A proper fix will be reviewed post merge window. Fixes: c0cf5bdde46c ("rdma/siw: addition to kernel build environment") Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-07-12 23:12:06 +08:00
depends on INET && INFINIBAND && LIBCRC32C && 64BIT
rdma/siw: Add missing dependencies on LIBCRC32C and DMA_VIRT_OPS If LIBCRC32C and DMA_VIRT_OPS are not enabled: drivers/infiniband/sw/siw/siw_main.o: In function `siw_newlink': siw_main.c:(.text+0x35c): undefined reference to `dma_virt_ops' drivers/infiniband/sw/siw/siw_qp_rx.o: In function `siw_csum_update': siw_qp_rx.c:(.text+0x16): undefined reference to `crc32c' Fix the first issue by adding a select of DMA_VIRT_OPS. Fix the second issue by replacing the unneeded dependency on CRYPTO_CRC32 by a dependency on LIBCRC32C. Reported-by: noreply@ellerman.id.au (first issue) Fixes: c0cf5bdde46c ("rdma/siw: addition to kernel build environment") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-07-10 21:39:30 +08:00
select DMA_VIRT_OPS
rdma/siw: addition to kernel build environment Broken up commit to add the Soft iWarp RDMA driver. Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-06-21 00:21:33 +08:00
help
This driver implements the iWARP RDMA transport over
the Linux TCP/IP network stack. It enables a system with a
standard Ethernet adapter to interoperate with a iWARP
adapter or with another system running the SIW driver.
(See also RXE which is a similar software driver for RoCE.)
The driver interfaces with the Linux RDMA stack and
implements both a kernel and user space RDMA verbs API.
The user space verbs API requires a support
library named libsiw which is loaded by the generic user
space verbs API, libibverbs. To implement RDMA over
TCP/IP, the driver further interfaces with the Linux
in-kernel TCP socket layer.