On Tue, May 30, 2017 at 06:35:37PM -0600, David Ahern wrote: > On 5/30/17 6:08 PM, Martin KaFai Lau wrote: > > This patch series: > > 1) Introduce ID for both bpf_prog and bpf_map. > > 2) Add bpf commands to iterate the prog IDs and map > > IDs of the system. > > 3) Add bpf commands to get a prog/map fd from an ID > > 4) Add bpf command to get prog/map info from a fd. > > The prog/map info is a jump start in this patchset > > and it is not meant to be a complete list. They can > > be extended in the future patches. > > Interesting. This really simplifies the bpf retrieval I have been > working on: > https://github.com/dsahern/linux/commits/bpf/retrieve-bpf-wip > > Having the net device, filter, route, socket, cgroup, etc return the ids > for attached programs solves the problem of getting a reference to all > of the places BPF programs can be placed. Right, it is the idea.
I am also baking some follow-up patches for returning xdp-prog's id through netlink. > > This patch set turns an id into a fd, and my patches allow the fd to be > used to get the bpf code.
