On Tue, Oct 6, 2020 at 6:19 PM Jakub Kicinski [off-list ref] wrote:
On Tue, 6 Oct 2020 18:33:02 +0200 Jesper Dangaard Brouer wrote:
quoted
quoted
+static const struct bpf_func_proto bpf_xdp_mtu_lookup_proto = {
+ .func = bpf_xdp_mtu_lookup,
+ .gpl_only = true,
+ .ret_type = RET_INTEGER,
+ .arg1_type = ARG_PTR_TO_CTX,
+ .arg2_type = ARG_ANYTHING,
+ .arg3_type = ARG_ANYTHING,
+};
+
+
FWIW
CHECK: Please don't use multiple blank lines
#112: FILE: net/core/filter.c:5566:
FYI: It would be nice to have a similar function to return a device's
L2 header size (ie. 14 for ethernet) and/or hwtype.
Also, should this be restricted to gpl only?
[I'm not actually sure, I'm actually fed up with non-gpl code atm, and
wouldn't be against all bpf code needing to be gpl'ed...]