On Fri, May 19, 2023 at 08:15:26AM -0700, Jakub Kicinski wrote: > On Fri, 19 May 2023 06:58:20 -0700 Breno Leitao wrote: > > With the implementation of network ioctl on io_uring[1], Willem > > suggested[2] that the "struct proto" ioctls functions should be reused, > > instead of duplicating the code. > > For that, the ioctl callbacks need to be more flexible, and avoid > > operating on userspace buffers (doing get/put_user()) directly on the > > callbacks. This patch adds this flexibility, so, the io_uring plumbing > > becomes more clean, avoiding duplicating code. This may also benefit > > BPF. > > > > For that, a wrapper is created, which will copy from/to userspace, and > > the ioctl callback will rely on the wrapper to do userspace memory > > copies. > > > > I've tested this patch in three different ways: > > 1) Created a simple testcase for TCP/UDP [3] > > 2) Run relevant LTP tests, such as: sockioctl, setsockopt, bind, sendto, > > fanout, ns-udpsender, etc > > 3) Run basics network selftests > > > > PS: There are some `strcmp()` in the `sock_skprot_ioctl()`, that I was > > not able to find a better way to deal with it. Any feedback is > > appreciated. > > Why not CC netdev@ on this? Oops, my mistake. I will do it on V2.
