Evade needing to compile own libxdp for skipping the dispatcher by setting env var

Author: mozzieongit

xdp-server.c

@@ -230,8 +230,11 @@ static int load_xdp_program_and_map(struct xdp_server *xdp) {
 	}
 
 	if (xdp->bpf_prog_should_load) {
-		/* err = xdp_program__attach(xdp->bpf_prog, xdp->interface_index, attach_mode, 0); */
-		err = xdp_program__attach_single(xdp->bpf_prog, xdp->interface_index, attach_mode);
+		/* TODO: I find setting environment variables from within a program
+		 * not a good thing to do, but for the meantime this helps... */
+		putenv("LIBXDP_SKIP_DISPATCHER=1");
+		err = xdp_program__attach(xdp->bpf_prog, xdp->interface_index, attach_mode, 0);
+		/* err = xdp_program__attach_single(xdp->bpf_prog, xdp->interface_index, attach_mode); */
 		if (err) {
 			libxdp_strerror(err, errmsg, sizeof(errmsg));
 			log_msg(LOG_ERR, "xdp: could not attach xdp program to interface '%s' : %s\n",