On 8/11/21 6:36 PM, Mohan Parthasarathy wrote:
Hi,
I looked in the samples and header files, but could not find an
example for this. How does one convert this from bcc to libbpf. This
is the userspace code.
bpf = BPF(src_file = "socket_filter.c", debug=0)
socket_filter = bpf.load_func("socket_filter", BPF.SOCKET_FILTER)
BPF.attach_raw_socket(socket_filter, "eth2")
socket_fd = socket_filter.sock
I can do the following to set the type:
err = bpf_program__set_socket_filter(obj);
Is there any sample I can follow or any header files where I can look
for attaching a socket to the bpf code.
There are a few examples in linux/samples/bpf directory:
[~/work/bpf-next/samples/bpf] grep SOCKET_F *.c
cookie_uid_helper_example.c: prog_fd =
bpf_load_program(BPF_PROG_TYPE_SOCKET_FILTER, prog,
fds_example.c: return bpf_load_program(BPF_PROG_TYPE_SOCKET_FILTER,
sockex1_user.c: if (bpf_prog_load(filename, BPF_PROG_TYPE_SOCKET_FILTER,
sockex2_user.c: if (bpf_prog_load(filename, BPF_PROG_TYPE_SOCKET_FILTER,
sock_example.c: prog_fd = bpf_load_program(BPF_PROG_TYPE_SOCKET_FILTER,
prog, insns_cnt,
They should provide an example how to attach a socket_filter program
to a socket.
Thanks
Mohan
