--- libaitio/src/bpf.c	2013/06/26 16:22:12	1.1.2.19
+++ libaitio/src/bpf.c	2013/06/26 16:34:28	1.1.2.20
@@ -231,7 +231,7 @@ chkZCbuf(struct bpf_zbuf_header *bzh)
 	return (bzh->bzh_user_gen != atomic_load_acq_int(&bzh->bzh_kernel_gen));
 }
 
-static inline ssize_t
+static ssize_t
 nextZCbuf(int eth, struct bpf_zbuf * __restrict zbuf, void * __restrict buf, size_t buflen)
 {
 	ssize_t rlen = 0;
@@ -254,8 +254,11 @@ nextZCbuf(int eth, struct bpf_zbuf * __restrict zbuf, 
 		pos += rlen;
 	}
 
-	if (!pos)
-		ioctl(eth, BIOCROTZBUF, &bz);
+	if (!pos) {
+		if ((rlen = ioctl(eth, BIOCROTZBUF, &bz)) == -1)
+			LOGERR;
+	} else
+		rlen = pos;
 	return rlen;
 }
 #endif
@@ -285,11 +288,9 @@ io_etherRecv(int eth, void * __restrict buf, size_t bu
 			LOGERR;
 	} else {
 #ifdef __FreeBSD__
-		do {
+		rlen = nextZCbuf(eth, (struct bpf_zbuf*) zcbuf, buf, buflen);
+		if (!rlen)
 			rlen = nextZCbuf(eth, (struct bpf_zbuf*) zcbuf, buf, buflen);
-			if (!rlen)
-				continue;
-		} while (0);
 #else
 		rlen = -1;
 		io_SetErr(ENOTSUP, "bpf zero copy buffer mode is not supported");