diff --git a/sys/conf/makeLINT.mk b/sys/conf/makeLINT.mk
index 08b16fda07b9..6daa280f02d5 100644
--- a/sys/conf/makeLINT.mk
+++ b/sys/conf/makeLINT.mk
@@ -53,7 +53,6 @@ LINT: ${NOTES} ${MAKELINT_SED}
 .if ${TARGET} == "powerpc"
 	# cat is available, not sure if cp is?
 	cat ${.TARGET} > ${.TARGET}64
-	echo "nodevice netmap"	>> ${.TARGET}
 	echo "machine	${TARGET} powerpc" >> ${.TARGET}
 	echo "machine	${TARGET} powerpc64" >> ${.TARGET}64
 .endif
diff --git a/sys/dev/netmap/if_ptnet.c b/sys/dev/netmap/if_ptnet.c
index b6059dc55cfa..0afbd936bc54 100644
--- a/sys/dev/netmap/if_ptnet.c
+++ b/sys/dev/netmap/if_ptnet.c
@@ -210,7 +210,7 @@ static int	ptnet_irqs_init(struct ptnet_softc *sc);
 static void	ptnet_irqs_fini(struct ptnet_softc *sc);
 
 static uint32_t ptnet_nm_ptctl(if_t ifp, uint32_t cmd);
-static int	ptnet_nm_config(struct netmap_adapter *na,
+static int      ptnet_nm_config(struct netmap_adapter *na,
 				struct nm_config_info *info);
 static void	ptnet_update_vnet_hdr(struct ptnet_softc *sc);
 static int	ptnet_nm_register(struct netmap_adapter *na, int onoff);
diff --git a/sys/dev/netmap/netmap.c b/sys/dev/netmap/netmap.c
index d6230dfb8ebe..fef919f4ed57 100644
--- a/sys/dev/netmap/netmap.c
+++ b/sys/dev/netmap/netmap.c
@@ -536,35 +536,35 @@ SYSBEGIN(main_init);
 SYSCTL_DECL(_dev_netmap);
 SYSCTL_NODE(_dev, OID_AUTO, netmap, CTLFLAG_RW, 0, "Netmap args");
 SYSCTL_INT(_dev_netmap, OID_AUTO, verbose,
-    CTLFLAG_RW, &netmap_verbose, 0, "Verbose mode");
+		CTLFLAG_RW, &netmap_verbose, 0, "Verbose mode");
 SYSCTL_INT(_dev_netmap, OID_AUTO, no_timestamp,
-    CTLFLAG_RW, &netmap_no_timestamp, 0, "no_timestamp");
+		CTLFLAG_RW, &netmap_no_timestamp, 0, "no_timestamp");
 SYSCTL_INT(_dev_netmap, OID_AUTO, no_pendintr, CTLFLAG_RW, &netmap_no_pendintr,
-    0, "Always look for new received packets.");
+		0, "Always look for new received packets.");
 SYSCTL_INT(_dev_netmap, OID_AUTO, txsync_retry, CTLFLAG_RW,
-    &netmap_txsync_retry, 0, "Number of txsync loops in bridge's flush.");
+		&netmap_txsync_retry, 0, "Number of txsync loops in bridge's flush.");
 
 SYSCTL_INT(_dev_netmap, OID_AUTO, fwd, CTLFLAG_RW, &netmap_fwd, 0,
-    "Force NR_FORWARD mode");
+		"Force NR_FORWARD mode");
 SYSCTL_INT(_dev_netmap, OID_AUTO, admode, CTLFLAG_RW, &netmap_admode, 0,
-    "Adapter mode. 0 selects the best option available,"
-    "1 forces native adapter, 2 forces emulated adapter");
+		"Adapter mode. 0 selects the best option available,"
+		"1 forces native adapter, 2 forces emulated adapter");
 SYSCTL_INT(_dev_netmap, OID_AUTO, generic_mit, CTLFLAG_RW, &netmap_generic_mit,
-    0, "RX notification interval in nanoseconds");
+		0, "RX notification interval in nanoseconds");
 SYSCTL_INT(_dev_netmap, OID_AUTO, generic_ringsize, CTLFLAG_RW,
-    &netmap_generic_ringsize, 0,
-    "Number of per-ring slots for emulated netmap mode");
+		&netmap_generic_ringsize, 0,
+		"Number of per-ring slots for emulated netmap mode");
 SYSCTL_INT(_dev_netmap, OID_AUTO, generic_rings, CTLFLAG_RW,
-    &netmap_generic_rings, 0,
-    "Number of TX/RX queues for emulated netmap adapters");
+		&netmap_generic_rings, 0,
+		"Number of TX/RX queues for emulated netmap adapters");
 #ifdef linux
 SYSCTL_INT(_dev_netmap, OID_AUTO, generic_txqdisc, CTLFLAG_RW,
-    &netmap_generic_txqdisc, 0, "Use qdisc for generic adapters");
+		&netmap_generic_txqdisc, 0, "Use qdisc for generic adapters");
 #endif
 SYSCTL_INT(_dev_netmap, OID_AUTO, ptnet_vnet_hdr, CTLFLAG_RW, &ptnet_vnet_hdr,
-    0, "Allow ptnet devices to use virtio-net headers");
+		0, "Allow ptnet devices to use virtio-net headers");
 SYSCTL_INT(_dev_netmap, OID_AUTO, ptnetmap_tx_workers, CTLFLAG_RW,
-    &ptnetmap_tx_workers, 0, "Use worker threads for pnetmap TX processing");
+		&ptnetmap_tx_workers, 0, "Use worker threads for pnetmap TX processing");
 
 SYSEND;
 
@@ -765,15 +765,15 @@ netmap_update_config(struct netmap_adapter *na)
 	    na->rx_buf_maxsize == info.rx_buf_maxsize)
 		return 0; /* nothing changed */
 	if (na->active_fds == 0) {
-		D("configuration changed for %s: txring %d x %d, "
-			"rxring %d x %d, rxbufsz %d",
-			na->name, na->num_tx_rings, na->num_tx_desc,
-			na->num_rx_rings, na->num_rx_desc, na->rx_buf_maxsize);
 		na->num_tx_rings = info.num_tx_rings;
 		na->num_tx_desc = info.num_tx_descs;
 		na->num_rx_rings = info.num_rx_rings;
 		na->num_rx_desc = info.num_rx_descs;
 		na->rx_buf_maxsize = info.rx_buf_maxsize;
+		D("configuration changed for %s: txring %d x %d, "
+			"rxring %d x %d, rxbufsz %d",
+			na->name, na->num_tx_rings, na->num_tx_desc,
+			na->num_rx_rings, na->num_rx_desc, na->rx_buf_maxsize);
 		return 0;
 	}
 	D("WARNING: configuration changed for %s while active: "
@@ -830,7 +830,7 @@ netmap_krings_create(struct netmap_adapter *na, u_int tailroom)
 	n[NR_TX] = na->num_tx_rings + 1;
 	n[NR_RX] = na->num_rx_rings + 1;
 
-	len = (n[NR_TX] + n[NR_RX]) * 
+	len = (n[NR_TX] + n[NR_RX]) *
 		(sizeof(struct netmap_kring) + sizeof(struct netmap_kring *))
 		+ tailroom;
 
@@ -841,7 +841,7 @@ netmap_krings_create(struct netmap_adapter *na, u_int tailroom)
 	}
 	na->rx_rings = na->tx_rings + n[NR_TX];
 	na->tailroom = na->rx_rings + n[NR_RX];
- 
+
 	/* link the krings in the krings array */
 	kring = (struct netmap_kring *)((char *)na->tailroom + tailroom);
 	for (i = 0; i < n[NR_TX] + n[NR_RX]; i++) {
@@ -1006,9 +1006,9 @@ netmap_do_unregif(struct netmap_priv_d *priv)
 		if (netmap_verbose)
 			D("deleting last instance for %s", na->name);
 
-                if (nm_netmap_on(na)) {
-                    D("BUG: netmap on while going to delete the krings");
-                }
+		if (nm_netmap_on(na)) {
+			D("BUG: netmap on while going to delete the krings");
+		}
 
 		na->nm_krings_delete(na);
 	}
@@ -1324,7 +1324,7 @@ netmap_rxsync_from_host(struct netmap_kring *kring, int flags)
 			m_copydata(m, 0, len, NMB(na, slot));
 			ND("nm %d len %d", nm_i, len);
 			if (netmap_verbose)
-                                D("%s", nm_dump_buf(NMB(na, slot),len, 128, NULL));
+				D("%s", nm_dump_buf(NMB(na, slot),len, 128, NULL));
 
 			slot->len = len;
 			slot->flags = 0;
@@ -1476,7 +1476,7 @@ netmap_get_na(struct nmreq_header *hdr,
 	      struct netmap_adapter **na, struct ifnet **ifp,
 	      struct netmap_mem_d *nmd, int create)
 {
-	struct nmreq_register *req = (struct nmreq_register *)hdr->nr_body;
+	struct nmreq_register *req = (struct nmreq_register *)(uintptr_t)hdr->nr_body;
 	int error = 0;
 	struct netmap_adapter *ret = NULL;
 	int nmd_ref = 0;
@@ -2091,9 +2091,6 @@ netmap_do_regif(struct netmap_priv_d *priv, struct netmap_adapter *na,
 
 	NMG_LOCK_ASSERT();
 	priv->np_na = na;     /* store the reference */
-	error = netmap_set_ringid(priv, nr_mode, nr_ringid, nr_flags);
-	if (error)
-		goto err;
 	error = netmap_mem_finalize(na->nm_mem, na);
 	if (error)
 		goto err;
@@ -2109,7 +2106,14 @@ netmap_do_regif(struct netmap_priv_d *priv, struct netmap_adapter *na,
 
 		/* ring configuration may have changed, fetch from the card */
 		netmap_update_config(na);
+	}
 
+	/* compute the range of tx and rx rings to monitor */
+	error = netmap_set_ringid(priv, nr_mode, nr_ringid, nr_flags);
+	if (error)
+		goto err_put_lut;
+
+	if (na->active_fds == 0) {
 		/*
 		 * If this is the first registration of the adapter,
 		 * perform sanity checks and create the in-kernel view
@@ -2117,11 +2121,17 @@ netmap_do_regif(struct netmap_priv_d *priv, struct netmap_adapter *na,
 		 */
 		if (na->ifp && nm_priv_rx_enabled(priv)) {
 			/* This netmap adapter is attached to an ifnet. */
-			unsigned nbs = netmap_mem_bufsize(na->nm_mem);
+			unsigned nbs = NETMAP_BUF_SIZE(na);
 			unsigned mtu = nm_os_ifnet_mtu(na->ifp);
 
-			ND("mtu %d rx_buf_maxsize %d netmap_buf_size %d",
-					mtu, na->rx_buf_maxsize, nbs);
+			ND("%s: mtu %d rx_buf_maxsize %d netmap_buf_size %d",
+					na->name, mtu, na->rx_buf_maxsize, nbs);
+
+			if (na->rx_buf_maxsize == 0) {
+				D("%s: error: rx_buf_maxsize == 0", na->name);
+				error = EIO;
+				goto err_drop_mem;
+			}
 
 			if (mtu <= na->rx_buf_maxsize) {
 				/* The MTU fits a single NIC slot. We only
@@ -2191,7 +2201,7 @@ netmap_do_regif(struct netmap_priv_d *priv, struct netmap_adapter *na,
 	nifp = netmap_mem_if_new(na, priv);
 	if (nifp == NULL) {
 		error = ENOMEM;
-		goto err_del_rings;
+		goto err_rel_excl;
 	}
 
 	if (nm_kring_pending(priv)) {
@@ -2217,10 +2227,9 @@ netmap_do_regif(struct netmap_priv_d *priv, struct netmap_adapter *na,
 
 err_del_if:
 	netmap_mem_if_delete(na, nifp);
-err_del_rings:
-	netmap_mem_rings_delete(na);
 err_rel_excl:
 	netmap_krings_put(priv);
+	netmap_mem_rings_delete(na);
 err_del_krings:
 	if (na->active_fds == 0)
 		na->nm_krings_delete(na);
@@ -2313,8 +2322,8 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 		 * For convenince, the nr_body pointer and the pointers
 		 * in the options list will be replaced with their
 		 * kernel-space counterparts. The original pointers are
-                * saved internally and later restored by nmreq_copyout
-                */
+		 * saved internally and later restored by nmreq_copyout
+		 */
 		error = nmreq_copyin(hdr, nr_body_is_user);
 		if (error) {
 			return error;
@@ -2326,7 +2335,7 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 		switch (hdr->nr_reqtype) {
 		case NETMAP_REQ_REGISTER: {
 			struct nmreq_register *req =
-				(struct nmreq_register *)hdr->nr_body;
+				(struct nmreq_register *)(uintptr_t)hdr->nr_body;
 			/* Protect access to priv from concurrent requests. */
 			NMG_LOCK();
 			do {
@@ -2341,7 +2350,7 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 				}
 
 #ifdef WITH_EXTMEM
-				opt = nmreq_findoption((struct nmreq_option *)hdr->nr_options,
+				opt = nmreq_findoption((struct nmreq_option *)(uintptr_t)hdr->nr_options,
 						NETMAP_REQ_OPT_EXTMEM);
 				if (opt != NULL) {
 					struct nmreq_opt_extmem *e =
@@ -2444,7 +2453,7 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 
 		case NETMAP_REQ_PORT_INFO_GET: {
 			struct nmreq_port_info_get *req =
-				(struct nmreq_port_info_get *)hdr->nr_body;
+				(struct nmreq_port_info_get *)(uintptr_t)hdr->nr_body;
 
 			NMG_LOCK();
 			do {
@@ -2463,10 +2472,10 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 
 					/* get a refcount */
 					hdr->nr_reqtype = NETMAP_REQ_REGISTER;
-					hdr->nr_body = (uint64_t)&regreq;
+					hdr->nr_body = (uintptr_t)&regreq;
 					error = netmap_get_na(hdr, &na, &ifp, NULL, 1 /* create */);
 					hdr->nr_reqtype = NETMAP_REQ_PORT_INFO_GET; /* reset type */
-					hdr->nr_body = (uint64_t)req; /* reset nr_body */
+					hdr->nr_body = (uintptr_t)req; /* reset nr_body */
 					if (error) {
 						na = NULL;
 						ifp = NULL;
@@ -2517,7 +2526,7 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 
 		case NETMAP_REQ_PORT_HDR_SET: {
 			struct nmreq_port_hdr *req =
-				(struct nmreq_port_hdr *)hdr->nr_body;
+				(struct nmreq_port_hdr *)(uintptr_t)hdr->nr_body;
 			/* Build a nmreq_register out of the nmreq_port_hdr,
 			 * so that we can call netmap_get_bdg_na(). */
 			struct nmreq_register regreq;
@@ -2533,10 +2542,10 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 			}
 			NMG_LOCK();
 			hdr->nr_reqtype = NETMAP_REQ_REGISTER;
-			hdr->nr_body = (uint64_t)&regreq;
+			hdr->nr_body = (uintptr_t)&regreq;
 			error = netmap_get_bdg_na(hdr, &na, NULL, 0);
 			hdr->nr_reqtype = NETMAP_REQ_PORT_HDR_SET;
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			if (na && !error) {
 				struct netmap_vp_adapter *vpna =
 					(struct netmap_vp_adapter *)na;
@@ -2556,7 +2565,7 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 		case NETMAP_REQ_PORT_HDR_GET: {
 			/* Get vnet-header length for this netmap port */
 			struct nmreq_port_hdr *req =
-				(struct nmreq_port_hdr *)hdr->nr_body;
+				(struct nmreq_port_hdr *)(uintptr_t)hdr->nr_body;
 			/* Build a nmreq_register out of the nmreq_port_hdr,
 			 * so that we can call netmap_get_bdg_na(). */
 			struct nmreq_register regreq;
@@ -2565,10 +2574,10 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 			bzero(&regreq, sizeof(regreq));
 			NMG_LOCK();
 			hdr->nr_reqtype = NETMAP_REQ_REGISTER;
-			hdr->nr_body = (uint64_t)&regreq;
+			hdr->nr_body = (uintptr_t)&regreq;
 			error = netmap_get_na(hdr, &na, &ifp, NULL, 0);
 			hdr->nr_reqtype = NETMAP_REQ_PORT_HDR_GET;
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			if (na && !error) {
 				req->nr_hdr_len = na->virt_hdr_len;
 			}
@@ -2595,7 +2604,7 @@ netmap_ioctl(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 #endif  /* WITH_VALE */
 		case NETMAP_REQ_POOLS_INFO_GET: {
 			struct nmreq_pools_info *req =
-				(struct nmreq_pools_info *)hdr->nr_body;
+				(struct nmreq_pools_info *)(uintptr_t)hdr->nr_body;
 			/* Get information from the memory allocator. This
 			 * netmap device must already be bound to a port.
 			 * Note that hdr->nr_name is ignored. */
@@ -2774,8 +2783,8 @@ nmreq_copyin(struct nmreq_header *hdr, int nr_body_is_user)
 		error = EMSGSIZE;
 		goto out_err;
 	}
-	if ((rqsz && hdr->nr_body == (uint64_t)NULL) ||
-		(!rqsz && hdr->nr_body != (uint64_t)NULL)) {
+	if ((rqsz && hdr->nr_body == (uintptr_t)NULL) ||
+		(!rqsz && hdr->nr_body != (uintptr_t)NULL)) {
 		/* Request body expected, but not found; or
 		 * request body found but unexpected. */
 		error = EINVAL;
@@ -2784,8 +2793,8 @@ nmreq_copyin(struct nmreq_header *hdr, int nr_body_is_user)
 
 	bufsz = 2 * sizeof(void *) + rqsz;
 	optsz = 0;
-	for (src = (struct nmreq_option *)hdr->nr_options; src;
-	     src = (struct nmreq_option *)buf.nro_next)
+	for (src = (struct nmreq_option *)(uintptr_t)hdr->nr_options; src;
+	     src = (struct nmreq_option *)(uintptr_t)buf.nro_next)
 	{
 		error = copyin(src, &buf, sizeof(*src));
 		if (error)
@@ -2813,11 +2822,11 @@ nmreq_copyin(struct nmreq_header *hdr, int nr_body_is_user)
 	p = (char *)ptrs;
 
 	/* copy the body */
-	error = copyin((void *)hdr->nr_body, p, rqsz);
+	error = copyin((void *)(uintptr_t)hdr->nr_body, p, rqsz);
 	if (error)
 		goto out_restore;
 	/* overwrite the user pointer with the in-kernel one */
-	hdr->nr_body = (uint64_t)p;
+	hdr->nr_body = (uintptr_t)p;
 	p += rqsz;
 
 	/* copy the options */
@@ -2874,7 +2883,7 @@ static int
 nmreq_copyout(struct nmreq_header *hdr, int rerror)
 {
 	struct nmreq_option *src, *dst;
-	void *ker = (void *)hdr->nr_body, *bufstart;
+	void *ker = (void *)(uintptr_t)hdr->nr_body, *bufstart;
 	uint64_t *ptrs;
 	size_t bodysz;
 	int error;
@@ -2886,13 +2895,13 @@ nmreq_copyout(struct nmreq_header *hdr, int rerror)
 	ptrs = (uint64_t *)ker - 2;
 	bufstart = ptrs;
 	hdr->nr_body = *ptrs++;
-	src = (struct nmreq_option *)hdr->nr_options;
+	src = (struct nmreq_option *)(uintptr_t)hdr->nr_options;
 	hdr->nr_options = *ptrs;
 
 	if (!rerror) {
 		/* copy the body */
 		bodysz = nmreq_size_by_type(hdr->nr_reqtype);
-		error = copyout(ker, (void *)hdr->nr_body, bodysz);
+		error = copyout(ker, (void *)(uintptr_t)hdr->nr_body, bodysz);
 		if (error) {
 			rerror = error;
 			goto out;
@@ -2900,7 +2909,7 @@ nmreq_copyout(struct nmreq_header *hdr, int rerror)
 	}
 
 	/* copy the options */
-	dst = (struct nmreq_option *)hdr->nr_options;
+	dst = (struct nmreq_option *)(uintptr_t)hdr->nr_options;
 	while (src) {
 		size_t optsz;
 		uint64_t next;
@@ -2916,7 +2925,7 @@ nmreq_copyout(struct nmreq_header *hdr, int rerror)
 			rerror = error;
 			goto out;
 		}
-		       
+
 		/* copy the option body only if there was no error */
 		if (!rerror && !src->nro_status) {
 			optsz = nmreq_opt_size_by_type(src->nro_reqtype);
@@ -2928,8 +2937,8 @@ nmreq_copyout(struct nmreq_header *hdr, int rerror)
 				}
 			}
 		}
-		src = (struct nmreq_option *)next;
-		dst = (struct nmreq_option *)*ptrs;
+		src = (struct nmreq_option *)(uintptr_t)next;
+		dst = (struct nmreq_option *)(uintptr_t)*ptrs;
 	}
 
 
@@ -2942,7 +2951,7 @@ out:
 struct nmreq_option *
 nmreq_findoption(struct nmreq_option *opt, uint16_t reqtype)
 {
-	for ( ; opt; opt = (struct nmreq_option *)opt->nro_next)
+	for ( ; opt; opt = (struct nmreq_option *)(uintptr_t)opt->nro_next)
 		if (opt->nro_reqtype == reqtype)
 			return opt;
 	return NULL;
@@ -2953,7 +2962,7 @@ nmreq_checkduplicate(struct nmreq_option *opt) {
 	uint16_t type = opt->nro_reqtype;
 	int dup = 0;
 
-	while ((opt = nmreq_findoption((struct nmreq_option *)opt->nro_next,
+	while ((opt = nmreq_findoption((struct nmreq_option *)(uintptr_t)opt->nro_next,
 			type))) {
 		dup++;
 		opt->nro_status = EINVAL;
@@ -2969,8 +2978,8 @@ nmreq_checkoptions(struct nmreq_header *hdr)
 	 * marked as not supported
 	 */
 
-	for (opt = (struct nmreq_option *)hdr->nr_options; opt;
-	     opt = (struct nmreq_option *)opt->nro_next)
+	for (opt = (struct nmreq_option *)(uintptr_t)hdr->nr_options; opt;
+	     opt = (struct nmreq_option *)(uintptr_t)opt->nro_next)
 		if (opt->nro_status == EOPNOTSUPP)
 			return EOPNOTSUPP;
 
@@ -3643,9 +3652,9 @@ netmap_transmit(struct ifnet *ifp, struct mbuf *m)
 	 */
 	mbq_lock(q);
 
-        busy = kring->nr_hwtail - kring->nr_hwcur;
-        if (busy < 0)
-                busy += kring->nkr_num_slots;
+	busy = kring->nr_hwtail - kring->nr_hwcur;
+	if (busy < 0)
+		busy += kring->nkr_num_slots;
 	if (busy + mbq_len(q) >= kring->nkr_num_slots - 1) {
 		RD(2, "%s full hwcur %d hwtail %d qlen %d", na->name,
 			kring->nr_hwcur, kring->nr_hwtail, mbq_len(q));
diff --git a/sys/dev/netmap/netmap_freebsd.c b/sys/dev/netmap/netmap_freebsd.c
index 69e84a11f1a9..4dc26c29e6ef 100644
--- a/sys/dev/netmap/netmap_freebsd.c
+++ b/sys/dev/netmap/netmap_freebsd.c
@@ -138,13 +138,13 @@ nm_os_put_module(void)
 static void
 netmap_ifnet_arrival_handler(void *arg __unused, struct ifnet *ifp)
 {
-        netmap_undo_zombie(ifp);
+	netmap_undo_zombie(ifp);
 }
 
 static void
 netmap_ifnet_departure_handler(void *arg __unused, struct ifnet *ifp)
 {
-        netmap_make_zombie(ifp);
+	netmap_make_zombie(ifp);
 }
 
 static eventhandler_tag nm_ifnet_ah_tag;
@@ -153,33 +153,33 @@ static eventhandler_tag nm_ifnet_dh_tag;
 int
 nm_os_ifnet_init(void)
 {
-        nm_ifnet_ah_tag =
-                EVENTHANDLER_REGISTER(ifnet_arrival_event,
-                        netmap_ifnet_arrival_handler,
-                        NULL, EVENTHANDLER_PRI_ANY);
-        nm_ifnet_dh_tag =
-                EVENTHANDLER_REGISTER(ifnet_departure_event,
-                        netmap_ifnet_departure_handler,
-                        NULL, EVENTHANDLER_PRI_ANY);
-        return 0;
+	nm_ifnet_ah_tag =
+		EVENTHANDLER_REGISTER(ifnet_arrival_event,
+				netmap_ifnet_arrival_handler,
+				NULL, EVENTHANDLER_PRI_ANY);
+	nm_ifnet_dh_tag =
+		EVENTHANDLER_REGISTER(ifnet_departure_event,
+				netmap_ifnet_departure_handler,
+				NULL, EVENTHANDLER_PRI_ANY);
+	return 0;
 }
 
 void
 nm_os_ifnet_fini(void)
 {
-        EVENTHANDLER_DEREGISTER(ifnet_arrival_event,
-                nm_ifnet_ah_tag);
-        EVENTHANDLER_DEREGISTER(ifnet_departure_event,
-                nm_ifnet_dh_tag);
+	EVENTHANDLER_DEREGISTER(ifnet_arrival_event,
+			nm_ifnet_ah_tag);
+	EVENTHANDLER_DEREGISTER(ifnet_departure_event,
+			nm_ifnet_dh_tag);
 }
 
 unsigned
 nm_os_ifnet_mtu(struct ifnet *ifp)
 {
 #if __FreeBSD_version < 1100030
-       return ifp->if_data.ifi_mtu;
+	return ifp->if_data.ifi_mtu;
 #else /* __FreeBSD_version >= 1100030 */
-       return ifp->if_mtu;
+	return ifp->if_mtu;
 #endif
 }
 
@@ -625,14 +625,14 @@ nm_os_vi_detach(struct ifnet *ifp)
 struct nm_os_extmem {
 	vm_object_t obj;
 	vm_offset_t kva;
-        vm_offset_t size;
-	vm_pindex_t scan;
+	vm_offset_t size;
+	uintptr_t scan;
 };
 
 void
 nm_os_extmem_delete(struct nm_os_extmem *e)
 {
-	D("freeing %zx bytes", (size_t)e->size);
+	D("freeing %jx bytes", (uintmax_t)e->size);
 	vm_map_remove(kernel_map, e->kva, e->kva + e->size);
 	nm_os_free(e);
 }
@@ -701,7 +701,7 @@ nm_os_extmem_create(unsigned long p, struct nmreq_pools_info *pi, int *perror)
 			VMFS_OPTIMAL_SPACE, VM_PROT_READ | VM_PROT_WRITE,
 			VM_PROT_READ | VM_PROT_WRITE, 0);
 	if (rv != KERN_SUCCESS) {
-		D("vm_map_find(%zx) failed", (size_t)e->size);
+		D("vm_map_find(%jx) failed", (uintmax_t)e->size);
 		goto out_rel;
 	}
 	rv = vm_map_wire(kernel_map, e->kva, e->kva + e->size,
@@ -942,7 +942,7 @@ struct netmap_vm_handle_t {
 
 static int
 netmap_dev_pager_ctor(void *handle, vm_ooffset_t size, vm_prot_t prot,
-    vm_ooffset_t foff, struct ucred *cred, u_short *color)
+		vm_ooffset_t foff, struct ucred *cred, u_short *color)
 {
 	struct netmap_vm_handle_t *vmh = handle;
 
@@ -1519,7 +1519,7 @@ freebsd_netmap_poll(struct cdev *cdevi __unused, int events, struct thread *td)
 
 static int
 freebsd_netmap_ioctl(struct cdev *dev __unused, u_long cmd, caddr_t data,
-        int ffla __unused, struct thread *td)
+		int ffla __unused, struct thread *td)
 {
 	int error;
 	struct netmap_priv_d *priv;
diff --git a/sys/dev/netmap/netmap_generic.c b/sys/dev/netmap/netmap_generic.c
index 24d36d5db1b3..a8da6cea06b0 100644
--- a/sys/dev/netmap/netmap_generic.c
+++ b/sys/dev/netmap/netmap_generic.c
@@ -235,14 +235,14 @@ nm_os_get_mbuf(struct ifnet *ifp, int len)
 	for ((_k)=*(_karr), (_i) = 0; (_i) < (_n); (_i)++, (_k) = (_karr)[(_i)])
 
 #define for_each_tx_kring(_i, _k, _na) \
-            for_each_kring_n(_i, _k, (_na)->tx_rings, (_na)->num_tx_rings)
+		for_each_kring_n(_i, _k, (_na)->tx_rings, (_na)->num_tx_rings)
 #define for_each_tx_kring_h(_i, _k, _na) \
-            for_each_kring_n(_i, _k, (_na)->tx_rings, (_na)->num_tx_rings + 1)
+		for_each_kring_n(_i, _k, (_na)->tx_rings, (_na)->num_tx_rings + 1)
 
 #define for_each_rx_kring(_i, _k, _na) \
-            for_each_kring_n(_i, _k, (_na)->rx_rings, (_na)->num_rx_rings)
+		for_each_kring_n(_i, _k, (_na)->rx_rings, (_na)->num_rx_rings)
 #define for_each_rx_kring_h(_i, _k, _na) \
-            for_each_kring_n(_i, _k, (_na)->rx_rings, (_na)->num_rx_rings + 1)
+		for_each_kring_n(_i, _k, (_na)->rx_rings, (_na)->num_rx_rings + 1)
 
 
 /* ======================== PERFORMANCE STATISTICS =========================== */
@@ -297,12 +297,12 @@ static struct rate_context rate_ctx;
 
 void generic_rate(int txp, int txs, int txi, int rxp, int rxs, int rxi)
 {
-    if (txp) rate_ctx.new.txpkt++;
-    if (txs) rate_ctx.new.txsync++;
-    if (txi) rate_ctx.new.txirq++;
-    if (rxp) rate_ctx.new.rxpkt++;
-    if (rxs) rate_ctx.new.rxsync++;
-    if (rxi) rate_ctx.new.rxirq++;
+	if (txp) rate_ctx.new.txpkt++;
+	if (txs) rate_ctx.new.txsync++;
+	if (txi) rate_ctx.new.txirq++;
+	if (rxp) rate_ctx.new.rxpkt++;
+	if (rxs) rate_ctx.new.rxsync++;
+	if (rxi) rate_ctx.new.rxirq++;
 }
 
 #else /* !RATE */
@@ -586,7 +586,7 @@ generic_mbuf_destructor(struct mbuf *m)
 	 * MBUF_TXQ(m) under our feet. If the match is not found
 	 * on 'r', we try to see if it belongs to some other ring.
 	 */
-        for (;;) {
+	for (;;) {
 		bool match = false;
 
 		kring = na->tx_rings[r];
diff --git a/sys/dev/netmap/netmap_kern.h b/sys/dev/netmap/netmap_kern.h
index 8fc71b8e820e..862f9a43c5f1 100644
--- a/sys/dev/netmap/netmap_kern.h
+++ b/sys/dev/netmap/netmap_kern.h
@@ -450,7 +450,7 @@ struct netmap_kring {
 
 	/* the adapter the owns this kring */
 	struct netmap_adapter *na;
-	
+
 	/* the adapter that wants to be notified when this kring has
 	 * new slots avaialable. This is usually the same as the above,
 	 * but wrappers may let it point to themselves
@@ -1528,7 +1528,7 @@ int netmap_get_monitor_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 void netmap_monitor_stop(struct netmap_adapter *na);
 #else
 #define netmap_get_monitor_na(hdr, _2, _3, _4) \
-	(((struct nmreq_register *)hdr->nr_body)->nr_flags & (NR_MONITOR_TX | NR_MONITOR_RX) ? EOPNOTSUPP : 0)
+	(((struct nmreq_register *)(uintptr_t)hdr->nr_body)->nr_flags & (NR_MONITOR_TX | NR_MONITOR_RX) ? EOPNOTSUPP : 0)
 #endif
 
 #ifdef CONFIG_NET_NS
@@ -1823,7 +1823,7 @@ struct lut_entry {
 };
 #else /* linux & _WIN32 */
 /* dma-mapping in linux can assign a buffer a different address
- * depending on the device, so we need to have a separate 
+ * depending on the device, so we need to have a separate
  * physical-address look-up table for each na.
  * We can still share the vaddrs, though, therefore we split
  * the lut_entry structure.
@@ -2177,7 +2177,7 @@ nm_ptnetmap_host_on(struct netmap_adapter *na)
 }
 #else /* !WITH_PTNETMAP_HOST */
 #define netmap_get_pt_host_na(hdr, _2, _3, _4) \
-	(((struct nmreq_register *)hdr->nr_body)->nr_flags & (NR_PTNETMAP_HOST) ? EOPNOTSUPP : 0)
+	(((struct nmreq_register *)(uintptr_t)hdr->nr_body)->nr_flags & (NR_PTNETMAP_HOST) ? EOPNOTSUPP : 0)
 #define ptnetmap_ctl(_1, _2, _3)   EINVAL
 #define nm_ptnetmap_host_on(_1)   EINVAL
 #endif /* !WITH_PTNETMAP_HOST */
diff --git a/sys/dev/netmap/netmap_legacy.c b/sys/dev/netmap/netmap_legacy.c
index da0d622958d9..e7311ca91065 100644
--- a/sys/dev/netmap/netmap_legacy.c
+++ b/sys/dev/netmap/netmap_legacy.c
@@ -132,8 +132,8 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 	/* First prepare the request header. */
 	hdr->nr_version = NETMAP_API; /* new API */
 	strncpy(hdr->nr_name, nmr->nr_name, sizeof(nmr->nr_name));
-	hdr->nr_options = (uint64_t)NULL;
-	hdr->nr_body = (uint64_t)NULL;
+	hdr->nr_options = (uintptr_t)NULL;
+	hdr->nr_body = (uintptr_t)NULL;
 
 	switch (ioctl_cmd) {
 	case NIOCREGIF: {
@@ -142,7 +142,7 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 			/* Regular NIOCREGIF operation. */
 			struct nmreq_register *req = nm_os_malloc(sizeof(*req));
 			if (!req) { goto oom; }
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			hdr->nr_reqtype = NETMAP_REQ_REGISTER;
 			if (nmreq_register_from_legacy(nmr, hdr, req)) {
 				goto oom;
@@ -152,7 +152,7 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 		case NETMAP_BDG_ATTACH: {
 			struct nmreq_vale_attach *req = nm_os_malloc(sizeof(*req));
 			if (!req) { goto oom; }
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			hdr->nr_reqtype = NETMAP_REQ_VALE_ATTACH;
 			if (nmreq_register_from_legacy(nmr, hdr, &req->reg)) {
 				goto oom;
@@ -167,14 +167,14 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 		}
 		case NETMAP_BDG_DETACH: {
 			hdr->nr_reqtype = NETMAP_REQ_VALE_DETACH;
-			hdr->nr_body = (uint64_t)nm_os_malloc(sizeof(struct nmreq_vale_detach));
+			hdr->nr_body = (uintptr_t)nm_os_malloc(sizeof(struct nmreq_vale_detach));
 			break;
 		}
 		case NETMAP_BDG_VNET_HDR:
 		case NETMAP_VNET_HDR_GET: {
 			struct nmreq_port_hdr *req = nm_os_malloc(sizeof(*req));
 			if (!req) { goto oom; }
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			hdr->nr_reqtype = (nmr->nr_cmd == NETMAP_BDG_VNET_HDR) ?
 				NETMAP_REQ_PORT_HDR_SET : NETMAP_REQ_PORT_HDR_GET;
 			req->nr_hdr_len = nmr->nr_arg1;
@@ -183,7 +183,7 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 		case NETMAP_BDG_NEWIF : {
 			struct nmreq_vale_newif *req = nm_os_malloc(sizeof(*req));
 			if (!req) { goto oom; }
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			hdr->nr_reqtype = NETMAP_REQ_VALE_NEWIF;
 			req->nr_tx_slots = nmr->nr_tx_slots;
 			req->nr_rx_slots = nmr->nr_rx_slots;
@@ -200,7 +200,7 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 		case NETMAP_BDG_POLLING_OFF: {
 			struct nmreq_vale_polling *req = nm_os_malloc(sizeof(*req));
 			if (!req) { goto oom; }
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			hdr->nr_reqtype = (nmr->nr_cmd == NETMAP_BDG_POLLING_ON) ?
 				NETMAP_REQ_VALE_POLLING_ENABLE :
 				NETMAP_REQ_VALE_POLLING_DISABLE;
@@ -232,7 +232,7 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 		if (nmr->nr_cmd == NETMAP_BDG_LIST) {
 			struct nmreq_vale_list *req = nm_os_malloc(sizeof(*req));
 			if (!req) { goto oom; }
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			hdr->nr_reqtype = NETMAP_REQ_VALE_LIST;
 			req->nr_bridge_idx = nmr->nr_arg1;
 			req->nr_port_idx = nmr->nr_arg2;
@@ -240,7 +240,7 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 			/* Regular NIOCGINFO. */
 			struct nmreq_port_info_get *req = nm_os_malloc(sizeof(*req));
 			if (!req) { goto oom; }
-			hdr->nr_body = (uint64_t)req;
+			hdr->nr_body = (uintptr_t)req;
 			hdr->nr_reqtype = NETMAP_REQ_PORT_INFO_GET;
 			req->nr_offset = nmr->nr_offset;
 			req->nr_memsize = nmr->nr_memsize;
@@ -258,7 +258,7 @@ nmreq_from_legacy(struct nmreq *nmr, u_long ioctl_cmd)
 oom:
 	if (hdr) {
 		if (hdr->nr_body) {
-			nm_os_free((void *)hdr->nr_body);
+			nm_os_free((void *)(uintptr_t)hdr->nr_body);
 		}
 		nm_os_free(hdr);
 	}
@@ -293,13 +293,13 @@ nmreq_to_legacy(struct nmreq_header *hdr, struct nmreq *nmr)
 	switch (hdr->nr_reqtype) {
 	case NETMAP_REQ_REGISTER: {
 		struct nmreq_register *req =
-			(struct nmreq_register *)hdr->nr_body;
+			(struct nmreq_register *)(uintptr_t)hdr->nr_body;
 		nmreq_register_to_legacy(req, nmr);
 		break;
 	}
 	case NETMAP_REQ_PORT_INFO_GET: {
 		struct nmreq_port_info_get *req =
-			(struct nmreq_port_info_get *)hdr->nr_body;
+			(struct nmreq_port_info_get *)(uintptr_t)hdr->nr_body;
 		nmr->nr_offset = req->nr_offset;
 		nmr->nr_memsize = req->nr_memsize;
 		nmr->nr_tx_slots = req->nr_tx_slots;
@@ -311,7 +311,7 @@ nmreq_to_legacy(struct nmreq_header *hdr, struct nmreq *nmr)
 	}
 	case NETMAP_REQ_VALE_ATTACH: {
 		struct nmreq_vale_attach *req =
-			(struct nmreq_vale_attach *)hdr->nr_body;
+			(struct nmreq_vale_attach *)(uintptr_t)hdr->nr_body;
 		nmreq_register_to_legacy(&req->reg, nmr);
 		break;
 	}
@@ -320,7 +320,7 @@ nmreq_to_legacy(struct nmreq_header *hdr, struct nmreq *nmr)
 	}
 	case NETMAP_REQ_VALE_LIST: {
 		struct nmreq_vale_list *req =
-			(struct nmreq_vale_list *)hdr->nr_body;
+			(struct nmreq_vale_list *)(uintptr_t)hdr->nr_body;
 		strncpy(nmr->nr_name, hdr->nr_name, sizeof(nmr->nr_name));
 		nmr->nr_arg1 = req->nr_bridge_idx;
 		nmr->nr_arg2 = req->nr_port_idx;
@@ -329,13 +329,13 @@ nmreq_to_legacy(struct nmreq_header *hdr, struct nmreq *nmr)
 	case NETMAP_REQ_PORT_HDR_SET:
 	case NETMAP_REQ_PORT_HDR_GET: {
 		struct nmreq_port_hdr *req =
-			(struct nmreq_port_hdr *)hdr->nr_body;
+			(struct nmreq_port_hdr *)(uintptr_t)hdr->nr_body;
 		nmr->nr_arg1 = req->nr_hdr_len;
 		break;
 	}
 	case NETMAP_REQ_VALE_NEWIF: {
 		struct nmreq_vale_newif *req =
-			(struct nmreq_vale_newif *)hdr->nr_body;
+			(struct nmreq_vale_newif *)(uintptr_t)hdr->nr_body;
 		nmr->nr_tx_slots = req->nr_tx_slots;
 		nmr->nr_rx_slots = req->nr_rx_slots;
 		nmr->nr_tx_rings = req->nr_tx_rings;
@@ -375,7 +375,7 @@ netmap_ioctl_legacy(struct netmap_priv_d *priv, u_long cmd, caddr_t data,
 			nmreq_to_legacy(hdr, nmr);
 		}
 		if (hdr->nr_body) {
-			nm_os_free((void *)hdr->nr_body);
+			nm_os_free((void *)(uintptr_t)hdr->nr_body);
 		}
 		nm_os_free(hdr);
 		break;
diff --git a/sys/dev/netmap/netmap_mem2.c b/sys/dev/netmap/netmap_mem2.c
index b6d2d7e817d6..edf01a636151 100644
--- a/sys/dev/netmap/netmap_mem2.c
+++ b/sys/dev/netmap/netmap_mem2.c
@@ -673,10 +673,10 @@ nm_mem_assign_id_locked(struct netmap_mem_d *nmd)
 static int
 nm_mem_assign_id(struct netmap_mem_d *nmd)
 {
-        int ret;
+	int ret;
 
 	NM_MTX_LOCK(nm_mem_list_lock);
-        ret = nm_mem_assign_id_locked(nmd);
+	ret = nm_mem_assign_id_locked(nmd);
 	NM_MTX_UNLOCK(nm_mem_list_lock);
 
 	return ret;
@@ -1143,7 +1143,7 @@ netmap_extra_alloc(struct netmap_adapter *na, uint32_t *head, uint32_t n)
 static void
 netmap_extra_free(struct netmap_adapter *na, uint32_t head)
 {
-        struct lut_entry *lut = na->na_lut.lut;
+	struct lut_entry *lut = na->na_lut.lut;
 	struct netmap_mem_d *nmd = na->nm_mem;
 	struct netmap_obj_pool *p = &nmd->pools[NETMAP_BUF_POOL];
 	uint32_t i, cur, *buf;
@@ -1516,10 +1516,11 @@ netmap_mem_unmap(struct netmap_obj_pool *p, struct netmap_adapter *na)
 		return 0;
 
 #if defined(__FreeBSD__)
+	/* On FreeBSD mapping and unmapping is performed by the txsync
+	 * and rxsync routine, packet by packet. */
 	(void)i;
 	(void)lim;
 	(void)lut;
-	D("unsupported on FreeBSD");
 #elif defined(_WIN32)
 	(void)i;
 	(void)lim;
@@ -1551,10 +1552,11 @@ netmap_mem_map(struct netmap_obj_pool *p, struct netmap_adapter *na)
 		return 0;
 
 #if defined(__FreeBSD__)
+	/* On FreeBSD mapping and unmapping is performed by the txsync
+	 * and rxsync routine, packet by packet. */
 	(void)i;
 	(void)lim;
 	(void)lut;
-	D("unsupported on FreeBSD");
 #elif defined(_WIN32)
 	(void)i;
 	(void)lim;
@@ -1572,7 +1574,7 @@ netmap_mem_map(struct netmap_obj_pool *p, struct netmap_adapter *na)
 	if (lut->plut == NULL) {
 		D("Failed to allocate physical lut for %s", na->name);
 		return ENOMEM;
-        }
+	}
 
 	for (i = 0; i < lim; i += p->_clustentries) {
 		lut->plut[i].paddr = 0;
@@ -1644,7 +1646,7 @@ error:
  * allocator for private memory
  */
 static void *
-_netmap_mem_private_new(size_t size, struct netmap_obj_params *p, 
+_netmap_mem_private_new(size_t size, struct netmap_obj_params *p,
 		struct netmap_mem_ops *ops, int *perr)
 {
 	struct netmap_mem_d *d = NULL;
@@ -1722,16 +1724,16 @@ netmap_mem_private_new(u_int txr, u_int txd, u_int rxr, u_int rxd,
 	if (p[NETMAP_RING_POOL].size < v)
 		p[NETMAP_RING_POOL].size = v;
 	/* each pipe endpoint needs two tx rings (1 normal + 1 host, fake)
-         * and two rx rings (again, 1 normal and 1 fake host)
-         */
+	 * and two rx rings (again, 1 normal and 1 fake host)
+	 */
 	v = txr + rxr + 8 * npipes;
 	if (p[NETMAP_RING_POOL].num < v)
 		p[NETMAP_RING_POOL].num = v;
 	/* for each pipe we only need the buffers for the 4 "real" rings.
-         * On the other end, the pipe ring dimension may be different from
-         * the parent port ring dimension. As a compromise, we allocate twice the
-         * space actually needed if the pipe rings were the same size as the parent rings
-         */
+	 * On the other end, the pipe ring dimension may be different from
+	 * the parent port ring dimension. As a compromise, we allocate twice the
+	 * space actually needed if the pipe rings were the same size as the parent rings
+	 */
 	v = (4 * npipes + rxr) * rxd + (4 * npipes + txr) * txd + 2 + extra_bufs;
 		/* the +2 is for the tx and rx fake buffers (indices 0 and 1) */
 	if (p[NETMAP_BUF_POOL].num < v)
@@ -1942,7 +1944,11 @@ netmap_mem2_rings_create(struct netmap_adapter *na)
 	return 0;
 
 cleanup:
-	netmap_free_rings(na);
+	/* we cannot actually cleanup here, since we don't own kring->users
+	 * and kring->nr_klags & NKR_NEEDRING. The caller must decrement
+	 * the first or zero-out the second, then call netmap_free_rings()
+	 * to do the cleanup
+	 */
 
 	return ENOMEM;
 }
@@ -2155,7 +2161,7 @@ netmap_mem_ext_delete(struct netmap_mem_d *d)
 
 	for (i = 0; i < NETMAP_POOLS_NR; i++) {
 		struct netmap_obj_pool *p = &d->pools[i];
-		
+
 		if (p->lut) {
 			nm_free_lut(p->lut, p->objtotal);
 			p->lut = NULL;
@@ -2215,7 +2221,7 @@ netmap_mem_ext_create(uint64_t usrptr, struct nmreq_pools_info *pi, int *perror)
 			pi->nr_if_pool_objtotal, pi->nr_if_pool_objsize,
 			pi->nr_ring_pool_objtotal, pi->nr_ring_pool_objsize,
 			pi->nr_buf_pool_objtotal, pi->nr_buf_pool_objsize);
-		
+
 	os = nm_os_extmem_create(usrptr, pi, &error);
 	if (os == NULL) {
 		D("os extmem creation failed");
@@ -2238,7 +2244,7 @@ netmap_mem_ext_create(uint64_t usrptr, struct nmreq_pools_info *pi, int *perror)
 			&error);
 	if (nme == NULL)
 		goto out_unmap;
-					
+
 	nr_pages = nm_os_extmem_nr_pages(os);
 
 	/* from now on pages will be released by nme destructor;
@@ -2262,7 +2268,7 @@ netmap_mem_ext_create(uint64_t usrptr, struct nmreq_pools_info *pi, int *perror)
 			error = ENOMEM;
 			goto out_delete;
 		}
-		
+
 		p->bitmap_slots = (o->num + sizeof(uint32_t) - 1) / sizeof(uint32_t);
 		p->invalid_bitmap = nm_os_malloc(sizeof(uint32_t) * p->bitmap_slots);
 		if (p->invalid_bitmap == NULL) {
@@ -2515,11 +2521,11 @@ netmap_mem_pt_guest_finalize(struct netmap_mem_d *nmd)
 	if (error)
 		goto out;
 
-        /* Initialize the lut using the information contained in the
+	/* Initialize the lut using the information contained in the
 	 * ptnetmap memory device. */
-        bufsize = nm_os_pt_memdev_ioread(ptnmd->ptn_dev,
+	bufsize = nm_os_pt_memdev_ioread(ptnmd->ptn_dev,
 					 PTNET_MDEV_IO_BUF_POOL_OBJSZ);
-        nbuffers = nm_os_pt_memdev_ioread(ptnmd->ptn_dev,
+	nbuffers = nm_os_pt_memdev_ioread(ptnmd->ptn_dev,
 					 PTNET_MDEV_IO_BUF_POOL_OBJNUM);
 
 	/* allocate the lut */
@@ -2740,7 +2746,7 @@ netmap_mem_pt_guest_create(nm_memid_t mem_id)
 	ptnmd->host_mem_id = mem_id;
 	ptnmd->pt_ifs = NULL;
 
-        /* Assign new id in the guest (We have the lock) */
+	/* Assign new id in the guest (We have the lock) */
 	err = nm_mem_assign_id_locked(&ptnmd->up);
 	if (err)
 		goto error;
diff --git a/sys/dev/netmap/netmap_monitor.c b/sys/dev/netmap/netmap_monitor.c
index f6b7c93adc76..8b118ced9ad5 100644
--- a/sys/dev/netmap/netmap_monitor.c
+++ b/sys/dev/netmap/netmap_monitor.c
@@ -139,7 +139,7 @@ nm_is_zmon(struct netmap_adapter *na)
 static int
 netmap_monitor_txsync(struct netmap_kring *kring, int flags)
 {
-        RD(1, "%s %x", kring->name, flags);
+	RD(1, "%s %x", kring->name, flags);
 	return EIO;
 }
 
@@ -152,10 +152,10 @@ netmap_monitor_txsync(struct netmap_kring *kring, int flags)
 static int
 netmap_monitor_rxsync(struct netmap_kring *kring, int flags)
 {
-        ND("%s %x", kring->name, flags);
+	ND("%s %x", kring->name, flags);
 	kring->nr_hwcur = kring->rhead;
 	mb();
-        return 0;
+	return 0;
 }
 
 /* nm_krings_create callbacks for monitors.
@@ -198,7 +198,7 @@ nm_monitor_alloc(struct netmap_kring *kring, u_int n)
 		return 0;
 
 	old_len = sizeof(struct netmap_kring *)*kring->max_monitors;
-        len = sizeof(struct netmap_kring *) * n;
+	len = sizeof(struct netmap_kring *) * n;
 	nm = nm_os_realloc(kring->monitors, len, old_len);
 	if (nm == NULL)
 		return ENOMEM;
@@ -621,14 +621,14 @@ out_rxsync:
 static int
 netmap_zmon_parent_txsync(struct netmap_kring *kring, int flags)
 {
-        return netmap_zmon_parent_sync(kring, flags, NR_TX);
+	return netmap_zmon_parent_sync(kring, flags, NR_TX);
 }
 
 /* callback used to replace the nm_sync callback in the monitored rx rings */
 static int
 netmap_zmon_parent_rxsync(struct netmap_kring *kring, int flags)
 {
-        return netmap_zmon_parent_sync(kring, flags, NR_RX);
+	return netmap_zmon_parent_sync(kring, flags, NR_RX);
 }
 
 static int
@@ -802,7 +802,7 @@ netmap_monitor_parent_notify(struct netmap_kring *kring, int flags)
 		notify = kring->mon_notify;
 	}
 	nm_kr_put(kring);
-        return notify(kring, flags);
+	return notify(kring, flags);
 }
 
 
@@ -829,7 +829,7 @@ int
 netmap_get_monitor_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 			struct netmap_mem_d *nmd, int create)
 {
-	struct nmreq_register *req = (struct nmreq_register *)hdr->nr_body;
+	struct nmreq_register *req = (struct nmreq_register *)(uintptr_t)hdr->nr_body;
 	struct nmreq_register preq;
 	struct netmap_adapter *pna; /* parent adapter */
 	struct netmap_monitor_adapter *mna;
@@ -856,9 +856,9 @@ netmap_get_monitor_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 	 */
 	memcpy(&preq, req, sizeof(preq));
 	preq.nr_flags &= ~(NR_MONITOR_TX | NR_MONITOR_RX | NR_ZCOPY_MON);
-	hdr->nr_body = (uint64_t)&preq;
+	hdr->nr_body = (uintptr_t)&preq;
 	error = netmap_get_na(hdr, &pna, &ifp, nmd, create);
-	hdr->nr_body = (uint64_t)req;
+	hdr->nr_body = (uintptr_t)req;
 	if (error) {
 		D("parent lookup failed: %d", error);
 		return error;
diff --git a/sys/dev/netmap/netmap_pipe.c b/sys/dev/netmap/netmap_pipe.c
index 3b0fb869231b..f2ea3815f0e3 100644
--- a/sys/dev/netmap/netmap_pipe.c
+++ b/sys/dev/netmap/netmap_pipe.c
@@ -83,7 +83,7 @@ static int netmap_default_pipes = 0; /* ignored, kept for compatibility */
 SYSBEGIN(vars_pipes);
 SYSCTL_DECL(_dev_netmap);
 SYSCTL_INT(_dev_netmap, OID_AUTO, default_pipes, CTLFLAG_RW,
-    &netmap_default_pipes, 0, "For compatibility only");
+		&netmap_default_pipes, 0, "For compatibility only");
 SYSEND;
 
 /* allocate the pipe array in the parent adapter */
@@ -101,7 +101,7 @@ nm_pipe_alloc(struct netmap_adapter *na, u_int npipes)
 		return EINVAL;
 
 	old_len = sizeof(struct netmap_pipe_adapter *)*na->na_max_pipes;
-        len = sizeof(struct netmap_pipe_adapter *) * npipes;
+	len = sizeof(struct netmap_pipe_adapter *) * npipes;
 	npa = nm_os_realloc(na->na_pipes, len, old_len);
 	if (npa == NULL)
 		return ENOMEM;
@@ -184,28 +184,28 @@ netmap_pipe_remove(struct netmap_adapter *parent, struct netmap_pipe_adapter *na
 int
 netmap_pipe_txsync(struct netmap_kring *txkring, int flags)
 {
-        struct netmap_kring *rxkring = txkring->pipe;
-        u_int k, lim = txkring->nkr_num_slots - 1;
-        int m; /* slots to transfer */
+	struct netmap_kring *rxkring = txkring->pipe;
+	u_int k, lim = txkring->nkr_num_slots - 1;
+	int m; /* slots to transfer */
 	struct netmap_ring *txring = txkring->ring, *rxring = rxkring->ring;
 
-        ND("%p: %s %x -> %s", txkring, txkring->name, flags, rxkring->name);
-        ND(20, "TX before: hwcur %d hwtail %d cur %d head %d tail %d",
+	ND("%p: %s %x -> %s", txkring, txkring->name, flags, rxkring->name);
+	ND(20, "TX before: hwcur %d hwtail %d cur %d head %d tail %d",
 		txkring->nr_hwcur, txkring->nr_hwtail,
-                txkring->rcur, txkring->rhead, txkring->rtail);
+		txkring->rcur, txkring->rhead, txkring->rtail);
 
-        m = txkring->rhead - txkring->nr_hwcur; /* new slots */
-        if (m < 0)
-                m += txkring->nkr_num_slots;
+	m = txkring->rhead - txkring->nr_hwcur; /* new slots */
+	if (m < 0)
+		m += txkring->nkr_num_slots;
 
 	if (m == 0) {
 		/* nothing to send */
 		return 0;
 	}
 
-        for (k = txkring->nr_hwcur; m; m--, k = nm_next(k, lim)) {
-                struct netmap_slot *rs = &rxring->slot[k];
-                struct netmap_slot *ts = &txring->slot[k];
+	for (k = txkring->nr_hwcur; m; m--, k = nm_next(k, lim)) {
+		struct netmap_slot *rs = &rxring->slot[k];
+		struct netmap_slot *ts = &txring->slot[k];
 
 		rs->len = ts->len;
 		rs->ptr = ts->ptr;
@@ -215,17 +215,17 @@ netmap_pipe_txsync(struct netmap_kring *txkring, int flags)
 			rs->flags |= NS_BUF_CHANGED;
 			ts->flags &= ~NS_BUF_CHANGED;
 		}
-        }
+	}
 
-        mb(); /* make sure the slots are updated before publishing them */
-        rxkring->nr_hwtail = k;
-        txkring->nr_hwcur = k;
+	mb(); /* make sure the slots are updated before publishing them */
+	rxkring->nr_hwtail = k;
+	txkring->nr_hwcur = k;
 
-        ND(20, "TX after : hwcur %d hwtail %d cur %d head %d tail %d k %d",
+	ND(20, "TX after : hwcur %d hwtail %d cur %d head %d tail %d k %d",
 		txkring->nr_hwcur, txkring->nr_hwtail,
-                txkring->rcur, txkring->rhead, txkring->rtail, k);
+		txkring->rcur, txkring->rhead, txkring->rtail, k);
 
-        rxkring->nm_notify(rxkring, 0);
+	rxkring->nm_notify(rxkring, 0);
 
 	return 0;
 }
@@ -233,45 +233,45 @@ netmap_pipe_txsync(struct netmap_kring *txkring, int flags)
 int
 netmap_pipe_rxsync(struct netmap_kring *rxkring, int flags)
 {
-        struct netmap_kring *txkring = rxkring->pipe;
-        u_int k, lim = rxkring->nkr_num_slots - 1;
-        int m; /* slots to release */
+	struct netmap_kring *txkring = rxkring->pipe;
+	u_int k, lim = rxkring->nkr_num_slots - 1;
+	int m; /* slots to release */
 	struct netmap_ring *txring = txkring->ring, *rxring = rxkring->ring;
 
-        ND("%p: %s %x -> %s", txkring, txkring->name, flags, rxkring->name);
-        ND(20, "RX before: hwcur %d hwtail %d cur %d head %d tail %d",
+	ND("%p: %s %x -> %s", txkring, txkring->name, flags, rxkring->name);
+	ND(20, "RX before: hwcur %d hwtail %d cur %d head %d tail %d",
 		rxkring->nr_hwcur, rxkring->nr_hwtail,
-                rxkring->rcur, rxkring->rhead, rxkring->rtail);
+		rxkring->rcur, rxkring->rhead, rxkring->rtail);
 
-        m = rxkring->rhead - rxkring->nr_hwcur; /* released slots */
-        if (m < 0)
-                m += rxkring->nkr_num_slots;
+	m = rxkring->rhead - rxkring->nr_hwcur; /* released slots */
+	if (m < 0)
+		m += rxkring->nkr_num_slots;
 
 	if (m == 0) {
 		/* nothing to release */
 		return 0;
 	}
 
-        for (k = rxkring->nr_hwcur; m; m--, k = nm_next(k, lim)) {
-                struct netmap_slot *rs = &rxring->slot[k];
-                struct netmap_slot *ts = &txring->slot[k];
+	for (k = rxkring->nr_hwcur; m; m--, k = nm_next(k, lim)) {
+		struct netmap_slot *rs = &rxring->slot[k];
+		struct netmap_slot *ts = &txring->slot[k];
 
 		if (rs->flags & NS_BUF_CHANGED) {
 			/* copy the slot and report the buffer change */
 			*ts = *rs;
 			rs->flags &= ~NS_BUF_CHANGED;
 		}
-        }
+	}
 
-        mb(); /* make sure the slots are updated before publishing them */
-        txkring->nr_hwtail = nm_prev(k, lim);
-        rxkring->nr_hwcur = k;
+	mb(); /* make sure the slots are updated before publishing them */
+	txkring->nr_hwtail = nm_prev(k, lim);
+	rxkring->nr_hwcur = k;
 
-        ND(20, "RX after : hwcur %d hwtail %d cur %d head %d tail %d k %d",
+	ND(20, "RX after : hwcur %d hwtail %d cur %d head %d tail %d k %d",
 		rxkring->nr_hwcur, rxkring->nr_hwtail,
-                rxkring->rcur, rxkring->rhead, rxkring->rtail, k);
+		rxkring->rcur, rxkring->rhead, rxkring->rtail, k);
 
-        txkring->nm_notify(txkring, 0);
+	txkring->nm_notify(txkring, 0);
 
 	return 0;
 }
@@ -577,10 +577,10 @@ cleanup:
 
 	netmap_mem_rings_delete(na);
 	netmap_krings_delete(na); /* also zeroes tx_rings etc. */
-	
+
 	if (ona->tx_rings == NULL) {
 		/* already deleted, we must be on an
-                 * cleanup-after-error path */
+		 * cleanup-after-error path */
 		return;
 	}
 	netmap_mem_rings_delete(ona);
@@ -611,7 +611,7 @@ int
 netmap_get_pipe_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 		struct netmap_mem_d *nmd, int create)
 {
-	struct nmreq_register *req = (struct nmreq_register *)hdr->nr_body;
+	struct nmreq_register *req = (struct nmreq_register *)(uintptr_t)hdr->nr_body;
 	struct netmap_adapter *pna; /* parent adapter */
 	struct netmap_pipe_adapter *mna, *sna, *reqna;
 	struct ifnet *ifp = NULL;
@@ -696,8 +696,8 @@ netmap_get_pipe_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 			reqna = mna->peer;
 		}
 		/* the pipe we have found already holds a ref to the parent,
-                 * so we need to drop the one we got from netmap_get_na()
-                 */
+		 * so we need to drop the one we got from netmap_get_na()
+		 */
 		netmap_unget_na(pna, ifp);
 		goto found;
 	}
@@ -707,9 +707,9 @@ netmap_get_pipe_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 		goto put_out;
 	}
 	/* we create both master and slave.
-         * The endpoint we were asked for holds a reference to
-         * the other one.
-         */
+	 * The endpoint we were asked for holds a reference to
+	 * the other one.
+	 */
 	mna = nm_os_malloc(sizeof(*mna));
 	if (mna == NULL) {
 		error = ENOMEM;
@@ -774,8 +774,8 @@ netmap_get_pipe_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 	sna->peer = mna;
 
 	/* we already have a reference to the parent, but we
-         * need another one for the other endpoint we created
-         */
+	 * need another one for the other endpoint we created
+	 */
 	netmap_adapter_get(pna);
 	/* likewise for the ifp, if any */
 	if (ifp)
@@ -799,8 +799,8 @@ found:
 	netmap_adapter_get(*na);
 
 	/* keep the reference to the parent.
-         * It will be released by the req destructor
-         */
+	 * It will be released by the req destructor
+	 */
 
 	return 0;
 
diff --git a/sys/dev/netmap/netmap_pt.c b/sys/dev/netmap/netmap_pt.c
index cfa32b0bcf5f..bf7872ff2a9a 100644
--- a/sys/dev/netmap/netmap_pt.c
+++ b/sys/dev/netmap/netmap_pt.c
@@ -1160,7 +1160,7 @@ int
 netmap_get_pt_host_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 		struct netmap_mem_d *nmd, int create)
 {
-    struct nmreq_register *req = (struct nmreq_register *)hdr->nr_body;
+    struct nmreq_register *req = (struct nmreq_register *)(uintptr_t)hdr->nr_body;
     struct nmreq_register preq;
     struct netmap_adapter *parent; /* target adapter */
     struct netmap_pt_host_adapter *pth_na;
@@ -1186,9 +1186,9 @@ netmap_get_pt_host_na(struct nmreq_header *hdr, struct netmap_adapter **na,
      */
     memcpy(&preq, req, sizeof(preq));
     preq.nr_flags &= ~(NR_PTNETMAP_HOST);
-    hdr->nr_body = (uint64_t)&preq;
+    hdr->nr_body = (uintptr_t)&preq;
     error = netmap_get_na(hdr, &parent, &ifp, nmd, create);
-    hdr->nr_body = (uint64_t)req;
+    hdr->nr_body = (uintptr_t)req;
     if (error) {
         D("parent lookup failed: %d", error);
         goto put_out_noputparent;
diff --git a/sys/dev/netmap/netmap_vale.c b/sys/dev/netmap/netmap_vale.c
index 6e0748acd530..94ffc2e8df7d 100644
--- a/sys/dev/netmap/netmap_vale.c
+++ b/sys/dev/netmap/netmap_vale.c
@@ -163,7 +163,7 @@ static int bridge_batch = NM_BDG_BATCH; /* bridge batch size */
 SYSBEGIN(vars_vale);
 SYSCTL_DECL(_dev_netmap);
 SYSCTL_INT(_dev_netmap, OID_AUTO, bridge_batch, CTLFLAG_RW, &bridge_batch, 0,
-    "Max batch size to be used in the bridge");
+		"Max batch size to be used in the bridge");
 SYSEND;
 
 static int netmap_vp_create(struct nmreq_header *hdr, struct ifnet *,
@@ -231,7 +231,7 @@ struct nm_bridge {
 	 * The function is set by netmap_bdg_regops().
 	 */
 	struct netmap_bdg_ops *bdg_ops;
-	
+
 	/*
 	 * Contains the data structure used by the bdg_ops.lookup function.
 	 * By default points to *ht which is allocated on attach and used by the default lookup
@@ -285,22 +285,22 @@ static struct nm_bridge *nm_bridges;
 static inline void
 pkt_copy(void *_src, void *_dst, int l)
 {
-        uint64_t *src = _src;
-        uint64_t *dst = _dst;
-        if (unlikely(l >= 1024)) {
-                memcpy(dst, src, l);
-                return;
-        }
-        for (; likely(l > 0); l-=64) {
-                *dst++ = *src++;
-                *dst++ = *src++;
-                *dst++ = *src++;
-                *dst++ = *src++;
-                *dst++ = *src++;
-                *dst++ = *src++;
-                *dst++ = *src++;
-                *dst++ = *src++;
-        }
+	uint64_t *src = _src;
+	uint64_t *dst = _dst;
+	if (unlikely(l >= 1024)) {
+		memcpy(dst, src, l);
+		return;
+	}
+	for (; likely(l > 0); l-=64) {
+		*dst++ = *src++;
+		*dst++ = *src++;
+		*dst++ = *src++;
+		*dst++ = *src++;
+		*dst++ = *src++;
+		*dst++ = *src++;
+		*dst++ = *src++;
+		*dst++ = *src++;
+	}
 }
 
 
@@ -542,7 +542,7 @@ netmap_bdg_detach_common(struct nm_bridge *b, int hw, int sw)
 	netmap_bdg_free(b);
 }
 
-static inline void * 
+static inline void *
 nm_bdg_get_auth_token(struct nm_bridge *b)
 {
 	return b->ht;
@@ -679,7 +679,7 @@ int
 nm_vi_create(struct nmreq_header *hdr)
 {
 	struct nmreq_vale_newif *req =
-		(struct nmreq_vale_newif *)hdr->nr_body;
+		(struct nmreq_vale_newif *)(uintptr_t)hdr->nr_body;
 	int error = 0;
 	/* Build a nmreq_register out of the nmreq_vale_newif,
 	 * so that we can call netmap_get_bdg_na(). */
@@ -691,11 +691,11 @@ nm_vi_create(struct nmreq_header *hdr)
 	regreq.nr_rx_rings = req->nr_rx_rings;
 	regreq.nr_mem_id = req->nr_mem_id;
 	hdr->nr_reqtype = NETMAP_REQ_REGISTER;
-	hdr->nr_body = (uint64_t)&regreq;
+	hdr->nr_body = (uintptr_t)&regreq;
 	error = netmap_vi_create(hdr, 0 /* no autodelete */);
 	hdr->nr_reqtype = NETMAP_REQ_VALE_NEWIF;
-	hdr->nr_body = (uint64_t)req;
-        /* Write back to the original struct. */
+	hdr->nr_body = (uintptr_t)req;
+	/* Write back to the original struct. */
 	req->nr_tx_slots = regreq.nr_tx_slots;
 	req->nr_rx_slots = regreq.nr_rx_slots;
 	req->nr_tx_rings = regreq.nr_tx_rings;
@@ -772,7 +772,7 @@ nm_update_info(struct nmreq_register *req, struct netmap_adapter *na)
 int
 netmap_vi_create(struct nmreq_header *hdr, int autodelete)
 {
-	struct nmreq_register *req = (struct nmreq_register *)hdr->nr_body;
+	struct nmreq_register *req = (struct nmreq_register *)(uintptr_t)hdr->nr_body;
 	struct ifnet *ifp;
 	struct netmap_vp_adapter *vpna;
 	struct netmap_mem_d *nmd = NULL;
@@ -883,7 +883,7 @@ netmap_get_bdg_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 
 	b = nm_find_bridge(nr_name, create);
 	if (b == NULL) {
-		D("no bridges available for '%s'", nr_name);
+		ND("no bridges available for '%s'", nr_name);
 		return (create ? ENOMEM : ENXIO);
 	}
 	if (strlen(nr_name) < b->bdg_namelen) /* impossible */
@@ -977,7 +977,7 @@ netmap_get_bdg_na(struct nmreq_header *hdr, struct netmap_adapter **na,
 		if (hdr->nr_reqtype == NETMAP_REQ_VALE_ATTACH) {
 			/* Check if we need to skip the host rings. */
 			struct nmreq_vale_attach *areq =
-				(struct nmreq_vale_attach *)hdr->nr_body;
+				(struct nmreq_vale_attach *)(uintptr_t)hdr->nr_body;
 			if (areq->reg.nr_mode != NR_REG_NIC_SW) {
 				hostna = NULL;
 			}
@@ -1017,7 +1017,7 @@ int
 nm_bdg_ctl_attach(struct nmreq_header *hdr, void *auth_token)
 {
 	struct nmreq_vale_attach *req =
-		(struct nmreq_vale_attach *)hdr->nr_body;
+		(struct nmreq_vale_attach *)(uintptr_t)hdr->nr_body;
 	struct netmap_vp_adapter * vpna;
 	struct netmap_adapter *na;
 	struct netmap_mem_d *nmd = NULL;
@@ -1094,7 +1094,7 @@ nm_is_bwrap(struct netmap_adapter *na)
 int
 nm_bdg_ctl_detach(struct nmreq_header *hdr, void *auth_token)
 {
-	struct nmreq_vale_detach *nmreq_det = (void *)hdr->nr_body;
+	struct nmreq_vale_detach *nmreq_det = (void *)(uintptr_t)hdr->nr_body;
 	struct netmap_vp_adapter *vpna;
 	struct netmap_adapter *na;
 	struct nm_bridge *b = NULL;
@@ -1413,7 +1413,7 @@ int
 nm_bdg_polling(struct nmreq_header *hdr)
 {
 	struct nmreq_vale_polling *req =
-		(struct nmreq_vale_polling *)hdr->nr_body;
+		(struct nmreq_vale_polling *)(uintptr_t)hdr->nr_body;
 	struct netmap_adapter *na = NULL;
 	int error = 0;
 
@@ -1446,7 +1446,7 @@ int
 netmap_bdg_list(struct nmreq_header *hdr)
 {
 	struct nmreq_vale_list *req =
-		(struct nmreq_vale_list *)hdr->nr_body;
+		(struct nmreq_vale_list *)(uintptr_t)hdr->nr_body;
 	int namelen = strlen(hdr->nr_name);
 	struct nm_bridge *b, *bridges;
 	struct netmap_vp_adapter *vpna;
@@ -1528,7 +1528,7 @@ netmap_bdg_list(struct nmreq_header *hdr)
  *
  * Called without NMG_LOCK.
  */
- 
+
 int
 netmap_bdg_regops(const char *name, struct netmap_bdg_ops *bdg_ops, void *private_data, void *auth_token)
 {
@@ -1766,33 +1766,33 @@ nm_bdg_preflush(struct netmap_kring *kring, u_int end)
  */
 #define mix(a, b, c)                                                    \
 do {                                                                    \
-        a -= b; a -= c; a ^= (c >> 13);                                 \
-        b -= c; b -= a; b ^= (a << 8);                                  \
-        c -= a; c -= b; c ^= (b >> 13);                                 \
-        a -= b; a -= c; a ^= (c >> 12);                                 \
-        b -= c; b -= a; b ^= (a << 16);                                 \
-        c -= a; c -= b; c ^= (b >> 5);                                  \
-        a -= b; a -= c; a ^= (c >> 3);                                  \
-        b -= c; b -= a; b ^= (a << 10);                                 \
-        c -= a; c -= b; c ^= (b >> 15);                                 \
+	a -= b; a -= c; a ^= (c >> 13);                                 \
+	b -= c; b -= a; b ^= (a << 8);                                  \
+	c -= a; c -= b; c ^= (b >> 13);                                 \
+	a -= b; a -= c; a ^= (c >> 12);                                 \
+	b -= c; b -= a; b ^= (a << 16);                                 \
+	c -= a; c -= b; c ^= (b >> 5);                                  \
+	a -= b; a -= c; a ^= (c >> 3);                                  \
+	b -= c; b -= a; b ^= (a << 10);                                 \
+	c -= a; c -= b; c ^= (b >> 15);                                 \
 } while (/*CONSTCOND*/0)
 
 
 static __inline uint32_t
 nm_bridge_rthash(const uint8_t *addr)
 {
-        uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = 0; // hask key
+	uint32_t a = 0x9e3779b9, b = 0x9e3779b9, c = 0; // hask key
 
-        b += addr[5] << 8;
-        b += addr[4];
-        a += addr[3] << 24;
-        a += addr[2] << 16;
-        a += addr[1] << 8;
-        a += addr[0];
+	b += addr[5] << 8;
+	b += addr[4];
+	a += addr[3] << 24;
+	a += addr[2] << 16;
+	a += addr[1] << 8;
+	a += addr[0];
 
-        mix(a, b, c);
+	mix(a, b, c);
 #define BRIDGE_RTHASH_MASK	(NM_BDG_HASH-1)
-        return (c & BRIDGE_RTHASH_MASK);
+	return (c & BRIDGE_RTHASH_MASK);
 }
 
 #undef mix
@@ -2115,10 +2115,10 @@ nm_bdg_flush(struct nm_bdg_fwd *ft, u_int n, struct netmap_vp_adapter *na,
 		needed = d->bq_len + brddst->bq_len;
 
 		if (unlikely(dst_na->up.virt_hdr_len != na->up.virt_hdr_len)) {
-                        if (netmap_verbose) {
-                            RD(3, "virt_hdr_mismatch, src %d dst %d", na->up.virt_hdr_len,
-                                  dst_na->up.virt_hdr_len);
-                        }
+			if (netmap_verbose) {
+				RD(3, "virt_hdr_mismatch, src %d dst %d", na->up.virt_hdr_len,
+						dst_na->up.virt_hdr_len);
+			}
 			/* There is a virtio-net header/offloadings mismatch between
 			 * source and destination. The slower mismatch datapath will
 			 * be used to cope with all the mismatches.
@@ -2448,7 +2448,7 @@ static int
 netmap_vp_create(struct nmreq_header *hdr, struct ifnet *ifp,
 		struct netmap_mem_d *nmd, struct netmap_vp_adapter **ret)
 {
-	struct nmreq_register *req = (struct nmreq_register *)hdr->nr_body;
+	struct nmreq_register *req = (struct nmreq_register *)(uintptr_t)hdr->nr_body;
 	struct netmap_vp_adapter *vpna;
 	struct netmap_adapter *na;
 	int error = 0;
@@ -2497,7 +2497,7 @@ netmap_vp_create(struct nmreq_header *hdr, struct ifnet *ifp,
 	vpna->last_smac = ~0llu;
 	/*if (vpna->mfs > netmap_buf_size)  TODO netmap_buf_size is zero??
 		vpna->mfs = netmap_buf_size; */
-        if (netmap_verbose)
+	if (netmap_verbose)
 		D("max frame size %u", vpna->mfs);
 
 	na->na_flags |= NAF_BDG_MAYSLEEP;
@@ -2784,8 +2784,14 @@ netmap_bwrap_config(struct netmap_adapter *na, struct nm_config_info *info)
 	struct netmap_bwrap_adapter *bna =
 		(struct netmap_bwrap_adapter *)na;
 	struct netmap_adapter *hwna = bna->hwna;
+	int error;
 
-	/* forward the request */
+	/* Forward the request to the hwna. It may happen that nobody
+	 * registered hwna yet, so netmap_mem_get_lut() may have not
+	 * been called yet. */
+	error = netmap_mem_get_lut(hwna->nm_mem, &hwna->na_lut);
+	if (error)
+		return error;
 	netmap_update_config(hwna);
 	/* swap the results and propagate */
 	info->num_tx_rings = hwna->num_rx_rings;
@@ -2823,11 +2829,11 @@ netmap_bwrap_krings_create(struct netmap_adapter *na)
 	}
 
 	/* increment the usage counter for all the hwna krings */
-        for_rx_tx(t) {
-                for (i = 0; i < nma_get_nrings(hwna, t) + 1; i++) {
+	for_rx_tx(t) {
+		for (i = 0; i < nma_get_nrings(hwna, t) + 1; i++) {
 			NMR(hwna, t)[i]->users++;
 		}
-        }
+	}
 
 	/* now create the actual rings */
 	error = netmap_mem_rings_create(hwna);
@@ -2839,13 +2845,13 @@ netmap_bwrap_krings_create(struct netmap_adapter *na)
 	 * The original number of rings comes from hwna,
 	 * rx rings on one side equals tx rings on the other.
 	 */
-        for_rx_tx(t) {
-                enum txrx r = nm_txrx_swap(t); /* swap NR_TX <-> NR_RX */
-                for (i = 0; i < nma_get_nrings(hwna, r) + 1; i++) {
-                        NMR(na, t)[i]->nkr_num_slots = NMR(hwna, r)[i]->nkr_num_slots;
-                        NMR(na, t)[i]->ring = NMR(hwna, r)[i]->ring;
-                }
-        }
+	for_rx_tx(t) {
+		enum txrx r = nm_txrx_swap(t); /* swap NR_TX <-> NR_RX */
+		for (i = 0; i < nma_get_nrings(hwna, r) + 1; i++) {
+			NMR(na, t)[i]->nkr_num_slots = NMR(hwna, r)[i]->nkr_num_slots;
+			NMR(na, t)[i]->ring = NMR(hwna, r)[i]->ring;
+		}
+	}
 
 	if (na->na_flags & NAF_HOST_RINGS) {
 		/* the hostna rings are the host rings of the bwrap.
@@ -2861,9 +2867,9 @@ netmap_bwrap_krings_create(struct netmap_adapter *na)
 	return 0;
 
 err_dec_users:
-        for_rx_tx(t) {
+	for_rx_tx(t) {
 		NMR(hwna, t)[i]->users--;
-        }
+	}
 	hwna->nm_krings_delete(hwna);
 err_del_vp_rings:
 	netmap_vp_krings_delete(na);
@@ -2884,11 +2890,11 @@ netmap_bwrap_krings_delete(struct netmap_adapter *na)
 	ND("%s", na->name);
 
 	/* decrement the usage counter for all the hwna krings */
-        for_rx_tx(t) {
-                for (i = 0; i < nma_get_nrings(hwna, t) + 1; i++) {
+	for_rx_tx(t) {
+		for (i = 0; i < nma_get_nrings(hwna, t) + 1; i++) {
 			NMR(hwna, t)[i]->users--;
 		}
-        }
+	}
 
 	/* delete any netmap rings that are no longer needed */
 	netmap_mem_rings_delete(hwna);
@@ -2969,7 +2975,7 @@ netmap_bwrap_bdg_ctl(struct nmreq_header *hdr, struct netmap_adapter *na)
 
 	if (hdr->nr_reqtype == NETMAP_REQ_VALE_ATTACH) {
 		struct nmreq_vale_attach *req =
-			(struct nmreq_vale_attach *)hdr->nr_body;
+			(struct nmreq_vale_attach *)(uintptr_t)hdr->nr_body;
 		if (req->reg.nr_ringid != 0 ||
 			(req->reg.nr_mode != NR_REG_ALL_NIC &&
 				req->reg.nr_mode != NR_REG_NIC_SW)) {
@@ -3055,6 +3061,7 @@ netmap_bwrap_attach(const char *nr_name, struct netmap_adapter *hwna)
 	na->pdev = hwna->pdev;
 	na->nm_mem = netmap_mem_get(hwna->nm_mem);
 	na->virt_hdr_len = hwna->virt_hdr_len;
+	na->rx_buf_maxsize = hwna->rx_buf_maxsize;
 	bna->up.retry = 1; /* XXX maybe this should depend on the hwna */
 	/* Set the mfs, needed on the VALE mismatch datapath. */
 	bna->up.mfs = NM_BDG_MFS_DEFAULT;
@@ -3087,6 +3094,7 @@ netmap_bwrap_attach(const char *nr_name, struct netmap_adapter *hwna)
 		na->na_hostvp = hwna->na_hostvp =
 			hostna->na_hostvp = &bna->host;
 		hostna->na_flags = NAF_BUSY; /* prevent NIOCREGIF */
+		hostna->rx_buf_maxsize = hwna->rx_buf_maxsize;
 		bna->host.mfs = NM_BDG_MFS_DEFAULT;
 	}