On Tue, Feb 19, 2019 at 11:08:50AM +0100, Bernard Metzler wrote: > This patch set contributes version 5 of the SoftiWarp > driver, as originally introduced to the list Oct 6th, 2017. > SoftiWarp (siw) implements the iWarp RDMA protocol over > kernel TCP sockets. The driver integrates with the > linux-rdma framework. > > In response to the various helpful feedback, we fixed (besides > other small fixes) the following issues: What I'd like to hear is that the uapi is designed properly in this driver from a security perspective. 1) Kernel can only read-once any memory under control of user space to avoid execution integrity security problems 2) Userspace never provides data that is unsafe, ie MAC addresses, IP addresses, VLAN #s, etc. Anything that goes in a L2/L3 header of a packet is a security problem 3) We don't have bugs like rxe has where the netdev side is assuming lifetimes of IB objects that are not guaranteed - ie qps, ib_devs, etc can be destroyed async to netdev stuff if userspace tries hard enough. Finally, I want to hear from other people that this driver actually works: - Chuck, does it run NFS work loads without crashing? - Sagi, does it run NVMe workloads. - Does it pass the various user space rdma-core ping test commands? - Can it pass verbs fabtests from libfabric? etc Jason
