On 10/25/20 9:13 AM, Toke Høiland-Jørgensen wrote:
David Ahern [off-list ref] writes:
quoted
On 10/22/20 9:38 PM, Hangbin Liu wrote:
quoted
Note: ip/ipvrf.c is not convert to use libbpf as it only encodes a few
instructions and load directly.
for completeness, libbpf should be able to load a program from a buffer
as well.
It can, but the particular use in ipvrf is just loading half a dozen
instructions defined inline in C - there's no object files, BTF or
anything. So why bother with going through libbpf in this case? The
actual attachment is using the existing code anyway...
actually, it already does: bpf_load_program
I recalled figuring out how to do it, just did not remember if it was
local changes to libbpf. Does not look like any changes were needed:
https://github.com/dsahern/bpf-progs/blob/master/src/cgroup_sock.c