add XDP TLS SNI logging with bpf ringbuf
drop xdp_sni.bpf.o reverse_string due to
bpf verifier complaining program is too large.
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
domain name in xdp_dns.bpf.o not reversed properly
result in domain name mismatch with domain inserted
from user space xdp_dns
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
XDP dns rate limit program has static tail call
which requires revert xdp-tool commit:
(039bdea "xdp-loader: Only load the BPF program we need from object files")
XDP dns rate limit program also uses bpf_printk helper which is not
supported on FireBeeOS since kernel CONFIG_BPF_EVENTS which allows user
to do kprobe, uprobe, tracepoint is not enabled, so bpf_printk helper is
not available, so removed bpf_printk
see discussion in [0] xdp-loader load xdp program with bpf tail call result in Bad file descriptor(-9)
[0] https://github.com/xdp-project/xdp-tools/issues/377
Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
