On Tue, Aug 25, 2020 at 04:19:59PM -0700, Udip Pant wrote: > This patch series adds changes in verifier to make decisions such as granting > of read / write access or enforcement of return code status based on > the program type of the target program while using dynamic program > extension (of type BPF_PROG_TYPE_EXT). > > The BPF_PROG_TYPE_EXT type can be used to extend types such as XDP, SKB > and others. Since the BPF_PROG_TYPE_EXT program type on itself is just a > placeholder for those, we need this extended check for those extended > programs to actually work with proper access, while using this option. > > Patch #1 includes changes in the verifier. > Patch #2 adds selftests to verify write access on a packet for a valid > extension program type > Patch #3 adds selftests to verify proper check for the return code > Patch #4 adds selftests to ensure access permissions and restrictions > for some map types such sockmap. > > Changelogs: > v2 -> v3: > * more comprehensive resolution of the program type in the verifier > based on the target program (and not just for the packet access) > * selftests for checking return code and map access > * Also moved this patch to 'bpf-next' from 'bpf' tree Applied. Thanks
