Messages in this thread | | | Date | Sat, 28 Mar 2015 10:21:47 -0700 | From | Alexei Starovoitov <> | Subject | Re: [RFC] bpf: Suggestion on bpf syscall interface |
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On 3/28/15 4:36 AM, He Kuang wrote: > Hi, Alexei > > In our end-end IO module project, we use bpf maps to record > configurations. According to current bpf syscall interface, we > should specify map_fd to lookup/update bpf maps, so we are > restricted to do config in the same user program.
you can pass map_fd and prog_fd from one process to another via normal scm_rights mechanism.
> My suggestion is to export this kind of operations to sysfs, so > we can load&attach bpf progs and config it seperately. We > implement this feature in our demo project. What's your opinion > on this?
Eventually we may use single sysfs file for lsmod-like listings, but I definitely don't want to create parallel interface to maps via sysfs. It's way too expensive and not really suitable for binary key/values.
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