515 	__u32 prog_id = 0;  in xsk_create_bpf_link()  local
519 	err = bpf_get_link_xdp_id(ctx->ifindex, &prog_id, xsk->config.xdp_flags);  in xsk_create_bpf_link()
528 	if (prog_id) {  in xsk_create_bpf_link()
676 static int xsk_link_lookup(int ifindex, __u32 *prog_id, int *link_fd)  in xsk_link_lookup()  argument
715 				if (prog_id)  in xsk_link_lookup()
716 					*prog_id = link_info.prog_id;  in xsk_link_lookup()
838 static int xsk_lookup_xdp_res(struct xsk_socket *xsk, int *xsks_map_fd, int prog_id)  in xsk_lookup_xdp_res()  argument
843 	ctx->prog_fd = bpf_prog_get_fd_by_id(prog_id);  in xsk_lookup_xdp_res()
875 	__u32 prog_id = 0;  in __xsk_setup_xdp_prog()  local
879 		err = xsk_link_lookup(ctx->ifindex, &prog_id, &ctx->link_fd);  in __xsk_setup_xdp_prog()
881 		err = bpf_get_link_xdp_id(ctx->ifindex, &prog_id, xsk->config.xdp_flags);  in __xsk_setup_xdp_prog()
886 	err = !prog_id ? xsk_init_xdp_res(xsk, xsks_map_fd) :  in __xsk_setup_xdp_prog()
887 			 xsk_lookup_xdp_res(xsk, xsks_map_fd, prog_id);  in __xsk_setup_xdp_prog()