linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2016-10-06	IB/rxe: improved debug prints & code cleanup	Parav Pandit	1	-6/+6
	1. Debugging qp state transitions and qp errors in loopback and multiple QP tests is difficult without qp numbers in debug logs. This patch adds qp number to important debug logs. 2. Instead of having rxe: prefix in few logs and not having in few logs, using uniform module name prefix using pr_fmt macro. 3. Code cleanup for various warnings reported by checkpatch for incomplete unsigned data type, line over 80 characters, return statements. Signed-off-by: Parav Pandit <pandit.parav@gmail.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-04	Soft RoCE driver	Moni Shoua	1	-0/+157
	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>