Index: tools/tools/netmap/pkt-gen.c
===================================================================
--- tools/tools/netmap/pkt-gen.c
+++ tools/tools/netmap/pkt-gen.c
@@ -169,7 +169,7 @@
 	int pkt_size;
 	int burst;
 	int forever;
-	int npackets;	/* total packets to send */
+	uint32_t npackets;	/* total packets to send */
 	int frags;	/* fragments per packet */
 	int nthreads;
 	int cpus;
@@ -810,10 +810,10 @@
 	struct targ *targ = (struct targ *) data;
 	struct pollfd pfd = { .fd = targ->fd, .events = POLLIN };
 	struct netmap_if *nifp = targ->nmd->nifp;
-	int i, rx = 0, n = targ->g->npackets;
+	int i, rx = 0;
 	void *frame;
 	int size;
-	uint32_t sent = 0;
+	uint32_t sent = 0, n = targ->g->npackets;
 	struct timespec ts, now, last_print;
 	uint32_t count = 0, min = 1000000000, av = 0;
 
@@ -828,7 +828,7 @@
 
 	clock_gettime(CLOCK_REALTIME_PRECISE, &last_print);
 	now = last_print;
-	while (n == 0 || (int)sent < n) {
+	while (n == 0 || sent < n) {
 		struct netmap_ring *ring = NETMAP_TXRING(nifp, 0);
 		struct netmap_slot *slot;
 		char *p;
@@ -919,7 +919,8 @@
 	struct pollfd pfd = { .fd = targ->fd, .events = POLLIN };
 	struct netmap_if *nifp = targ->nmd->nifp;
 	struct netmap_ring *txring, *rxring;
-	int i, rx = 0, sent = 0, n = targ->g->npackets;
+	int i, rx = 0;
+	uint32_t sent = 0, n = targ->g->npackets;
 
 	if (targ->g->nthreads > 1) {
 		D("can only reply ping with 1 thread");
@@ -1066,7 +1067,8 @@
 	struct pollfd pfd = { .fd = targ->fd, .events = POLLOUT };
 	struct netmap_if *nifp;
 	struct netmap_ring *txring;
-	int i, n = targ->g->npackets / targ->g->nthreads;
+	int i;
+	uint32_t n = targ->g->npackets / targ->g->nthreads;
 	int64_t sent = 0;
 	int options = targ->g->options | OPT_COPY;
 	struct timespec nexttime = { 0, 0}; // XXX silence compiler