mana_xdp_get
old_prog = mana_xdp_get(apc);
mana_chn_setxdp(apc, mana_xdp_get(apc));
if (mtu + MANA_RXBUF_PAD > PAGE_SIZE / 2 || mana_xdp_get(apc)) {
if (mana_xdp_get(apc)) {
struct bpf_prog *mana_xdp_get(struct mana_port_context *apc);