linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2019-04-01	IB: Pass only ib_udata in function prototypes	Shamir Rabinovitch	1	-10/+5
	Now when ib_udata is passed to all the driver's object create/destroy APIs the ib_udata will carry the ib_ucontext for every user command. There is no need to also pass the ib_ucontext via the functions prototypes. Make ib_udata the only argument psssed. Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15	RDMA/rxe: Use structs to describe the uABI instead of opencoding	Jason Gunthorpe	1	-3/+2
	Open coding pointer math is not acceptable for describing the uABI in RDMA. Provide structs for all the cases. The udata is casted to the struct as close to the verbs entry point as possible for maximum clarity. Function signatures and so forth are revised to allow for this. Tested-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2016-11-16	IB/rxe: Clear queue buffer when modifying QP to reset	Yonatan Cohen	1	-0/+2
	RXE resets the send-q only once in rxe_qp_init_req() when QP is created, but when the QP is reused after QP reset, the send-q holds previous garbage data. This garbage data wrongly fails CQEs that otherwise should have completed successfully. Fixes: 8700e3e7c485 ("Soft RoCE driver") Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com> Reviewed-by: Moni Shoua <monis@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-04	Soft RoCE driver	Moni Shoua	1	-0/+178
	Soft RoCE (RXE) - The software RoCE driver ib_rxe implements the RDMA transport and registers to the RDMA core device as a kernel verbs provider. It also implements the packet IO layer. On the other hand ib_rxe registers to the Linux netdev stack as a udp encapsulating protocol, in that case RDMA, for sending and receiving packets over any Ethernet device. This yields a RDMA transport over the UDP/Ethernet network layer forming a RoCEv2 compatible device. The configuration procedure of the Soft RoCE drivers requires binding to any existing Ethernet network device. This is done with /sys interface. A userspace Soft RoCE library (librxe) provides user applications the ability to run with Soft RoCE devices. The use of rxe verbs ins user space requires the inclusion of librxe as a device specifics plug-in to libibverbs. librxe is packaged separately. Architecture: +-----------------------------------------------------------+ \| Application \| +-----------------------------------------------------------+ +-----------------------------------+ \| libibverbs \| User +-----------------------------------+ +----------------+ +----------------+ \| librxe \| \| HW RoCE lib \| +----------------+ +----------------+ +---------------------------------------------------------------+ +--------------+ +------------+ \| Sockets \| \| RDMA ULP \| +--------------+ +------------+ +--------------+ +---------------------+ \| TCP/IP \| \| ib_core \| +--------------+ +---------------------+ +------------+ +----------------+ Kernel \| ib_rxe \| \| HW RoCE driver \| +------------+ +----------------+ +------------------------------------+ \| NIC driver \| +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +-----------------------------------------------------------+ \| Application \| +-----------------------------------------------------------+ +-----------------------------------+ \| libibverbs \| User +-----------------------------------+ +----------------+ +----------------+ \| librxe \| \| HW RoCE lib \| +----------------+ +----------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +--------------+ +------------+ \| Sockets \| \| RDMA ULP \| +--------------+ +------------+ +--------------+ +---------------------+ \| TCP/IP \| \| ib_core \| +--------------+ +---------------------+ +------------+ +----------------+ Kernel \| ib_rxe \| \| HW RoCE driver \| +------------+ +----------------+ +------------------------------------+ \| NIC driver \| +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Soft RoCE resources: [1[ https://github.com/SoftRoCE/librxe-dev librxe - source code in Github [2] https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home - Soft RoCE Wiki page [3] https://github.com/SoftRoCE/librxe-dev - Soft RoCE userspace library Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>