On Thu, Aug 1, 2019 at 2:11 PM Stanislav Fomichev <sdf@xxxxxxxxxxx> wrote: > > On 08/01, Alexei Starovoitov wrote: > > On Mon, Jul 29, 2019 at 02:51:09PM -0700, Stanislav Fomichev wrote: > > > Current setsockopt hook is limited to the size of the buffer that > > > user had supplied. Since we always allocate memory and copy the value > > > into kernel space, allocate just a little bit more in case BPF > > > program needs to override input data with a larger value. > > > > > > The canonical example is TCP_CONGESTION socket option where > > > input buffer is a string and if user calls it with a short string, > > > BPF program has no way of extending it. > > > > > > The tests are extended with TCP_CONGESTION use case. > > > > Applied, Thanks > > > > Please consider integrating test_sockopt* into test_progs. > Sure, will take a look. I think I didn't do it initially > because these tests create/move to cgroups and test_progs > do simple tests with BPF_PROG_TEST_RUN. I think it would be great to consolidate all tests under test_progs. Since testing currently is all manual, myself and Daniel cannot realistically run all of them for every patch. When it's all part of test_progs it makes testing easier. Especially test_progs can now run individual test or subtest.
