we don't have to cast to caddr_t when calling m_copydata anymore.

the first cut of this diff was made with coccinelle using this spatch:

@rule@
type caddr_t;
expression m, off, len, cp;
@@
-m_copydata(m, off, len, (caddr_t)cp)
+m_copydata(m, off, len, cp)

i had fix it's opinionated idea of formatting by hand though, so
i'm not sure it was worth it.

ok deraadt@ bluhm@

29 files changed, 108 insertions, 118 deletions

diff --git a/sys/arch/armv7/sunxi/sxie.c b/sys/arch/armv7/sunxi/sxie.c
index a8850cba930..145545d3031 100644
--- a/sys/arch/armv7/sunxi/sxie.c
+++ b/sys/arch/armv7/sunxi/sxie.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sxie.c,v 1.29 2020/07/10 13:26:36 patrick Exp $	*/
+/*	$OpenBSD: sxie.c,v 1.30 2021/02/25 02:48:19 dlg Exp $	*/
 /*
  * Copyright (c) 2012-2013 Patrick Wildt <patrick@blueri.se>
  * Copyright (c) 2013 Artturi Alm
@@ -524,7 +524,7 @@ sxie_start(struct ifnet *ifp)
 		SXIWRITE4(sc, SXIE_TXPKTLEN0 + (fifo * 4), m->m_pkthdr.len);
 
 		/* copy the actual packet to fifo XXX through 'align buffer' */
-		m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)td);
+		m_copydata(m, 0, m->m_pkthdr.len, td);
 		bus_space_write_multi_4(sc->sc_iot, sc->sc_ioh,
 		    SXIE_TXIO0,
 		    (uint32_t *)td, SXIE_ROUNDUP(m->m_pkthdr.len, 4) >> 2);
diff --git a/sys/arch/octeon/dev/octcrypto.c b/sys/arch/octeon/dev/octcrypto.c
index 35f7e77aa47..b77f151c319 100644
--- a/sys/arch/octeon/dev/octcrypto.c
+++ b/sys/arch/octeon/dev/octcrypto.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: octcrypto.c,v 1.3 2019/03/10 14:20:44 visa Exp $	*/
+/*	$OpenBSD: octcrypto.c,v 1.4 2021/02/25 02:48:19 dlg Exp $	*/
 
 /*
  * Copyright (c) 2018 Visa Hankala
@@ -739,7 +739,7 @@ octcrypto_authenc_gmac(struct cryptop *crp, struct cryptodesc *crde,
 		} else {
 			if (crp->crp_flags & CRYPTO_F_IMBUF)
 				m_copydata((struct mbuf *)crp->crp_buf,
-				    crde->crd_inject, ivlen, (uint8_t *)iv);
+				    crde->crd_inject, ivlen, iv);
 			else
 				cuio_copydata((struct uio *)crp->crp_buf,
 				    crde->crd_inject, ivlen, (uint8_t *)iv);
@@ -1035,10 +1035,8 @@ octcrypto_authenc_hmac(struct cryptop *crp, struct cryptodesc *crde,
 				memcpy(iv, crde->crd_iv, ivlen);
 			} else {
 				if (crp->crp_flags & CRYPTO_F_IMBUF)
-					m_copydata(
-					    (struct mbuf *)crp->crp_buf,
-					    crde->crd_inject, ivlen,
-					    (uint8_t *)iv);
+					m_copydata((struct mbuf *)crp->crp_buf,
+					    crde->crd_inject, ivlen, iv);
 				else
 					cuio_copydata(
 					    (struct uio *)crp->crp_buf,
diff --git a/sys/dev/ic/acx.c b/sys/dev/ic/acx.c
index b26fce44c8f..01a306fcb2f 100644
--- a/sys/dev/ic/acx.c
+++ b/sys/dev/ic/acx.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: acx.c,v 1.124 2020/07/10 13:26:37 patrick Exp $ */
+/*	$OpenBSD: acx.c,v 1.125 2021/02/25 02:48:19 dlg Exp $ */
 
 /*
  * Copyright (c) 2006 Jonathan Gray <jsg@openbsd.org>
@@ -2373,7 +2373,7 @@ acx_set_probe_resp_tmplt(struct acx_softc *sc, struct ieee80211_node *ni)
 	IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid);
 	*(u_int16_t *)wh->i_seq = 0;
 
-	m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)&resp.data);
+	m_copydata(m, 0, m->m_pkthdr.len, &resp.data);
 	len = m->m_pkthdr.len + sizeof(resp.size);
 	m_freem(m); 
 
@@ -2427,7 +2427,7 @@ acx_set_beacon_tmplt(struct acx_softc *sc, struct ieee80211_node *ni)
 		return (1);
 	}
 
-	m_copydata(m, 0, off, (caddr_t)&beacon.data);
+	m_copydata(m, 0, off, &beacon.data);
 	len = off + sizeof(beacon.size);
 
 	if (acx_set_tmplt(sc, ACXCMD_TMPLT_BEACON, &beacon, len) != 0) {
@@ -2442,7 +2442,7 @@ acx_set_beacon_tmplt(struct acx_softc *sc, struct ieee80211_node *ni)
 		return (0);
 	}
 
-	m_copydata(m, off, len, (caddr_t)&tim.data);
+	m_copydata(m, off, len, &tim.data);
 	len += sizeof(beacon.size);
 	m_freem(m);
 
diff --git a/sys/dev/ic/an.c b/sys/dev/ic/an.c
index 97bc598dc66..6208492c94c 100644
--- a/sys/dev/ic/an.c
+++ b/sys/dev/ic/an.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: an.c,v 1.77 2020/12/08 04:37:27 cheloha Exp $	*/
+/*	$OpenBSD: an.c,v 1.78 2021/02/25 02:48:20 dlg Exp $	*/
 /*	$NetBSD: an.c,v 1.34 2005/06/20 02:49:18 atatat Exp $	*/
 /*
  * Copyright (c) 1997, 1998, 1999
@@ -781,7 +781,7 @@ an_mwrite_bap(struct an_softc *sc, int id, int off, struct mbuf *m, int totlen)
 		len = min(m->m_len, totlen);
 
 		if ((mtod(m, u_long) & 0x1) || (len & 0x1)) {
-			m_copydata(m, 0, totlen, (caddr_t)&sc->sc_buf.sc_txbuf);
+			m_copydata(m, 0, totlen, &sc->sc_buf.sc_txbuf);
 			cnt = (totlen + 1) / 2;
 			an_swap16((u_int16_t *)&sc->sc_buf.sc_txbuf, cnt); 
 			CSR_WRITE_MULTI_STREAM_2(sc, AN_DATA0,
@@ -1126,7 +1126,7 @@ an_start(struct ifnet *ifp)
 		if (ic->ic_flags & IEEE80211_F_WEPON)
 			wh->i_fc[1] |= IEEE80211_FC1_WEP;
 		m_copydata(m, 0, sizeof(struct ieee80211_frame),
-		    (caddr_t)&frmhdr.an_whdr);
+		    &frmhdr.an_whdr);
 		an_swap16((u_int16_t *)&frmhdr.an_whdr, sizeof(struct ieee80211_frame)/2);
 
 		/* insert payload length in front of llc/snap */
diff --git a/sys/dev/ic/if_wi.c b/sys/dev/ic/if_wi.c
index 6895e28c175..bd3fe1b86ed 100644
--- a/sys/dev/ic/if_wi.c
+++ b/sys/dev/ic/if_wi.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_wi.c,v 1.174 2020/07/10 13:26:37 patrick Exp $	*/
+/*	$OpenBSD: if_wi.c,v 1.175 2021/02/25 02:48:20 dlg Exp $	*/
 
 /*
  * Copyright (c) 1997, 1998, 1999
@@ -768,7 +768,7 @@ wi_rxeof(struct wi_softc *sc)
 				break;
 			case WI_CRYPTO_SOFTWARE_WEP:
 				m_copydata(m, 0, m->m_pkthdr.len,
-				    (caddr_t)sc->wi_rxbuf);
+				    sc->wi_rxbuf);
 				len = m->m_pkthdr.len -
 				    sizeof(struct ether_header);
 				if (wi_do_hostdecrypt(sc, sc->wi_rxbuf +
@@ -2400,7 +2400,7 @@ nextpkt:
 
 			m_copydata(m0, sizeof(struct ether_header),
 			    m0->m_pkthdr.len - sizeof(struct ether_header),
-			    (caddr_t)&sc->wi_txbuf[12]);
+			    &sc->wi_txbuf[12]);
 
 			wi_do_hostencrypt(sc, (caddr_t)&sc->wi_txbuf,
 			    tx_frame.wi_dat_len);
@@ -2418,7 +2418,7 @@ nextpkt:
 		} else {
 			m_copydata(m0, sizeof(struct ether_header),
 			    m0->m_pkthdr.len - sizeof(struct ether_header),
-			    (caddr_t)&sc->wi_txbuf);
+			    &sc->wi_txbuf);
 
 			tx_frame.wi_dat_len = htole16(tx_frame.wi_dat_len);
 			wi_write_data(sc, id, 0, (caddr_t)&tx_frame,
@@ -2438,8 +2438,7 @@ nextpkt:
 			    ": host encrypt not implemented for 802.3\n",
 			    WI_PRT_ARG(sc));
 		} else {
-			m_copydata(m0, 0, m0->m_pkthdr.len,
-			    (caddr_t)&sc->wi_txbuf);
+			m_copydata(m0, 0, m0->m_pkthdr.len, &sc->wi_txbuf);
 
 			wi_write_data(sc, id, 0, (caddr_t)&tx_frame,
 			    sizeof(struct wi_frame));
diff --git a/sys/dev/pci/if_bwfm_pci.c b/sys/dev/pci/if_bwfm_pci.c
index 7fc2ec380e9..4198390e687 100644
--- a/sys/dev/pci/if_bwfm_pci.c
+++ b/sys/dev/pci/if_bwfm_pci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_bwfm_pci.c,v 1.39 2021/01/31 11:07:51 patrick Exp $	*/
+/*	$OpenBSD: if_bwfm_pci.c,v 1.40 2021/02/25 02:48:20 dlg Exp $	*/
 /*
  * Copyright (c) 2010-2016 Broadcom Corporation
  * Copyright (c) 2017 Patrick Wildt <patrick@blueri.se>
@@ -2017,7 +2017,7 @@ bwfm_pci_msgbuf_query_dcmd(struct bwfm_softc *bwfm, int ifidx,
 	*len = min(ctl->retlen, m->m_len);
 	*len = min(*len, buflen);
 	if (buf)
-		m_copydata(ctl->m, 0, *len, (caddr_t)buf);
+		m_copydata(ctl->m, 0, *len, buf);
 	m_freem(ctl->m);
 
 	if (ctl->status < 0) {
diff --git a/sys/dev/pci/if_mcx.c b/sys/dev/pci/if_mcx.c
index 75bccc03c79..38437e54897 100644
--- a/sys/dev/pci/if_mcx.c
+++ b/sys/dev/pci/if_mcx.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_mcx.c,v 1.99 2021/02/15 03:42:00 dlg Exp $ */
+/*	$OpenBSD: if_mcx.c,v 1.100 2021/02/25 02:48:20 dlg Exp $ */
 
 /*
  * Copyright (c) 2017 David Gwynne <dlg@openbsd.org>
@@ -7754,7 +7754,7 @@ mcx_start(struct ifqueue *ifq)
 			    &sqe->sqe_inline_headers;
 
 			/* slightly cheaper vlan_inject() */
-			m_copydata(m, 0, ETHER_HDR_LEN, (caddr_t)evh);
+			m_copydata(m, 0, ETHER_HDR_LEN, evh);
 			evh->evl_proto = evh->evl_encap_proto;
 			evh->evl_encap_proto = htons(ETHERTYPE_VLAN);
 			evh->evl_tag = htons(m->m_pkthdr.ether_vtag);
@@ -7764,7 +7764,7 @@ mcx_start(struct ifqueue *ifq)
 #endif
 		{
 			m_copydata(m, 0, MCX_SQ_INLINE_SIZE,
-			    (caddr_t)sqe->sqe_inline_headers);
+			    sqe->sqe_inline_headers);
 			m_adj(m, MCX_SQ_INLINE_SIZE);
 		}
 
diff --git a/sys/dev/pci/safe.c b/sys/dev/pci/safe.c
index a0a595f7899..639d44f6455 100644
--- a/sys/dev/pci/safe.c
+++ b/sys/dev/pci/safe.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: safe.c,v 1.44 2020/05/29 04:42:25 deraadt Exp $	*/
+/*	$OpenBSD: safe.c,v 1.45 2021/02/25 02:48:20 dlg Exp $	*/
 
 /*-
  * Copyright (c) 2003 Sam Leffler, Errno Consulting
@@ -467,7 +467,7 @@ safe_process(struct cryptop *crp)
 				bcopy(enccrd->crd_iv, iv, ivsize);
 			else if (crp->crp_flags & CRYPTO_F_IMBUF)
 				m_copydata(re->re_src_m, enccrd->crd_inject,
-				    ivsize, (caddr_t)iv);
+				    ivsize, iv);
 			else if (crp->crp_flags & CRYPTO_F_IOV)
 				cuio_copydata(re->re_src_io, enccrd->crd_inject,
 				    ivsize, (caddr_t)iv);
diff --git a/sys/dev/pci/ubsec.c b/sys/dev/pci/ubsec.c
index a9020f7e615..aedc05eec2e 100644
--- a/sys/dev/pci/ubsec.c
+++ b/sys/dev/pci/ubsec.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ubsec.c,v 1.166 2020/05/29 04:42:25 deraadt Exp $	*/
+/*	$OpenBSD: ubsec.c,v 1.167 2021/02/25 02:48:20 dlg Exp $	*/
 
 /*
  * Copyright (c) 2000 Jason L. Wright (jason@thought.net)
@@ -927,7 +927,7 @@ ubsec_process(struct cryptop *crp)
 				bcopy(enccrd->crd_iv, key.ses_iv, ivlen);
 			else if (crp->crp_flags & CRYPTO_F_IMBUF)
 				m_copydata(q->q_src_m, enccrd->crd_inject,
-				    ivlen, (caddr_t)key.ses_iv);
+				    ivlen, key.ses_iv);
 			else if (crp->crp_flags & CRYPTO_F_IOV)
 				cuio_copydata(q->q_src_io,
 				    enccrd->crd_inject, ivlen,
diff --git a/sys/dev/usb/if_athn_usb.c b/sys/dev/usb/if_athn_usb.c
index 281c53c7ff9..771baafcdac 100644
--- a/sys/dev/usb/if_athn_usb.c
+++ b/sys/dev/usb/if_athn_usb.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_athn_usb.c,v 1.59 2020/11/30 16:09:33 krw Exp $	*/
+/*	$OpenBSD: if_athn_usb.c,v 1.60 2021/02/25 02:48:20 dlg Exp $	*/
 
 /*-
  * Copyright (c) 2011 Damien Bergamini <damien.bergamini@free.fr>
@@ -1766,7 +1766,7 @@ athn_usb_swba(struct athn_usb_softc *usc)
 	memset(bcn, 0, sizeof(*bcn));
 	bcn->vif_idx = 0;
 
-	m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)&bcn[1]);
+	m_copydata(m, 0, m->m_pkthdr.len, &bcn[1]);
 
 	usbd_setup_xfer(data->xfer, usc->tx_data_pipe, data, data->buf,
 	    sizeof(*hdr) + sizeof(*htc) + sizeof(*bcn) + m->m_pkthdr.len,
@@ -2377,7 +2377,7 @@ athn_usb_tx(struct athn_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
 		frm = (uint8_t *)&txm[1];
 	}
 	/* Copy payload. */
-	m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)frm);
+	m_copydata(m, 0, m->m_pkthdr.len, frm);
 	frm += m->m_pkthdr.len;
 	m_freem(m);
 
diff --git a/sys/dev/usb/if_otus.c b/sys/dev/usb/if_otus.c
index 9aa771ecad9..bb220831ffc 100644
--- a/sys/dev/usb/if_otus.c
+++ b/sys/dev/usb/if_otus.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_otus.c,v 1.68 2020/11/30 16:09:33 krw Exp $	*/
+/*	$OpenBSD: if_otus.c,v 1.69 2021/02/25 02:48:20 dlg Exp $	*/
 
 /*-
  * Copyright (c) 2009 Damien Bergamini <damien.bergamini@free.fr>
@@ -1380,7 +1380,7 @@ otus_tx(struct otus_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
 #endif
 
 	xferlen = sizeof (*head) + m->m_pkthdr.len;
-	m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)&head[1]);
+	m_copydata(m, 0, m->m_pkthdr.len, &head[1]);
 	m_freem(m);
 
 	DPRINTFN(5, ("tx queued=%d len=%d mac=0x%04x phy=0x%08x rate=%d\n",
diff --git a/sys/dev/usb/if_rsu.c b/sys/dev/usb/if_rsu.c
index a2d7b48749a..929d8f161d5 100644
--- a/sys/dev/usb/if_rsu.c
+++ b/sys/dev/usb/if_rsu.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_rsu.c,v 1.48 2020/11/30 16:09:33 krw Exp $	*/
+/*	$OpenBSD: if_rsu.c,v 1.49 2021/02/25 02:48:20 dlg Exp $	*/
 
 /*-
  * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
@@ -1609,7 +1609,7 @@ rsu_tx(struct rsu_softc *sc, struct mbuf *m, struct ieee80211_node *ni)
 #endif
 
 	xferlen = sizeof(*txd) + m->m_pkthdr.len;
-	m_copydata(m, 0, m->m_pkthdr.len, (caddr_t)&txd[1]);
+	m_copydata(m, 0, m->m_pkthdr.len, &txd[1]);
 	m_freem(m);
 
 	data->pipe = pipe;
diff --git a/sys/dev/usb/if_uath.c b/sys/dev/usb/if_uath.c
index e75546ba901..ae8ccb49c76 100644
--- a/sys/dev/usb/if_uath.c
+++ b/sys/dev/usb/if_uath.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_uath.c,v 1.86 2020/12/12 11:48:54 jan Exp $	*/
+/*	$OpenBSD: if_uath.c,v 1.87 2021/02/25 02:48:20 dlg Exp $	*/
 
 /*-
  * Copyright (c) 2006
@@ -1398,14 +1398,14 @@ uath_tx_data(struct uath_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
 		*frm++ = (iv >> 16) & 0xff;
 		*frm++ = ic->ic_wep_txkey << 6;
 
-		m_copydata(m0, sizeof (struct ieee80211_frame),
-		    m0->m_pkthdr.len - sizeof (struct ieee80211_frame), frm);
+		m_copydata(m0, sizeof(struct ieee80211_frame),
+		    m0->m_pkthdr.len - sizeof(struct ieee80211_frame), frm);
 
 		paylen  += IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN;
 		xferlen += IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN;
 		totlen = xferlen + IEEE80211_WEP_CRCLEN;
 	} else {
-		m_copydata(m0, 0, m0->m_pkthdr.len, (uint8_t *)(desc + 1));
+		m_copydata(m0, 0, m0->m_pkthdr.len, desc + 1);
 		totlen = xferlen;
 	}
 
diff --git a/sys/dev/usb/if_urtw.c b/sys/dev/usb/if_urtw.c
index 4e9bfb114bc..996f9122b8f 100644
--- a/sys/dev/usb/if_urtw.c
+++ b/sys/dev/usb/if_urtw.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_urtw.c,v 1.69 2020/07/10 13:22:21 patrick Exp $	*/
+/*	$OpenBSD: if_urtw.c,v 1.70 2021/02/25 02:48:20 dlg Exp $	*/
 
 /*-
  * Copyright (c) 2009 Martynas Venckus <martynas@openbsd.org>
@@ -2649,10 +2649,10 @@ urtw_tx_start(struct urtw_softc *sc, struct ieee80211_node *ni, struct mbuf *m0,
 		data->buf[8] = 3;		/* CW minimum */
 		data->buf[8] |= (7 << 4);	/* CW maximum */
 		data->buf[9] |= 11;		/* retry limitation */
-		m_copydata(m0, 0, m0->m_pkthdr.len, (uint8_t *)&data->buf[12]);
+		m_copydata(m0, 0, m0->m_pkthdr.len, &data->buf[12]);
 	} else {
 		data->buf[21] |= 11;		/* retry limitation */
-		m_copydata(m0, 0, m0->m_pkthdr.len, (uint8_t *)&data->buf[32]);
+		m_copydata(m0, 0, m0->m_pkthdr.len, &data->buf[32]);
 	}
 
 	data->ni = ni;
diff --git a/sys/net/bridgectl.c b/sys/net/bridgectl.c
index 5114da231ba..99a36692440 100644
--- a/sys/net/bridgectl.c
+++ b/sys/net/bridgectl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bridgectl.c,v 1.24 2021/02/24 06:44:54 dlg Exp $	*/
+/*	$OpenBSD: bridgectl.c,v 1.25 2021/02/25 02:48:21 dlg Exp $	*/
 
 /*
  * Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net)
@@ -669,7 +669,7 @@ bridge_arpfilter(struct brl_node *n, struct ether_header *eh, struct mbuf *m)
 		return (0);
 	if (m->m_pkthdr.len < ETHER_HDR_LEN + sizeof(ea))
 		return (0);	/* log error? */
-	m_copydata(m, ETHER_HDR_LEN, sizeof(ea), (caddr_t)&ea);
+	m_copydata(m, ETHER_HDR_LEN, sizeof(ea), &ea);
 
 	if (ntohs(ea.arp_hrd) != ARPHRD_ETHER ||
 	    ntohs(ea.arp_pro) != ETHERTYPE_IP ||
diff --git a/sys/net/if_bridge.c b/sys/net/if_bridge.c
index 991f753fca8..bb91143b35d 100644
--- a/sys/net/if_bridge.c
+++ b/sys/net/if_bridge.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_bridge.c,v 1.351 2021/02/23 11:44:53 dlg Exp $	*/
+/*	$OpenBSD: if_bridge.c,v 1.352 2021/02/25 02:48:21 dlg Exp $	*/
 
 /*
  * Copyright (c) 1999, 2000 Jason L. Wright (jason@thought.net)
@@ -958,7 +958,7 @@ bridgeintr_frame(struct ifnet *brifp, struct ifnet *src_if, struct mbuf *m)
 	bif = bridge_getbif(src_if);
 	KASSERT(bif != NULL);
 
-	m_copydata(m, 0, ETHER_HDR_LEN, (caddr_t)&eh);
+	m_copydata(m, 0, ETHER_HDR_LEN, &eh);
 	dst = (struct ether_addr *)&eh.ether_dhost[0];
 	src = (struct ether_addr *)&eh.ether_shost[0];
 
@@ -1457,8 +1457,7 @@ bridge_blocknonip(struct ether_header *eh, struct mbuf *m)
 	    (ETHER_HDR_LEN + LLC_SNAPFRAMELEN))
 		return (1);
 
-	m_copydata(m, ETHER_HDR_LEN, LLC_SNAPFRAMELEN,
-	    (caddr_t)&llc);
+	m_copydata(m, ETHER_HDR_LEN, LLC_SNAPFRAMELEN, &llc);
 
 	etype = ntohs(llc.llc_snap.ether_type);
 	if (llc.llc_dsap == LLC_SNAP_LSAP &&
@@ -1512,8 +1511,7 @@ bridge_ipsec(struct ifnet *ifp, struct ether_header *eh, int hassnap,
 			dst.sa.sa_family = AF_INET;
 			dst.sin.sin_len = sizeof(struct sockaddr_in);
 			m_copydata(m, offsetof(struct ip, ip_dst),
-			    sizeof(struct in_addr),
-			    (caddr_t)&dst.sin.sin_addr);
+			    sizeof(struct in_addr), &dst.sin.sin_addr);
 
 			break;
 #ifdef INET6
@@ -1535,8 +1533,7 @@ bridge_ipsec(struct ifnet *ifp, struct ether_header *eh, int hassnap,
 			dst.sa.sa_family = AF_INET6;
 			dst.sin6.sin6_len = sizeof(struct sockaddr_in6);
 			m_copydata(m, offsetof(struct ip6_hdr, ip6_dst),
-			    sizeof(struct in6_addr),
-			    (caddr_t)&dst.sin6.sin6_addr);
+			    sizeof(struct in6_addr), &dst.sin6.sin6_addr);
 
 			break;
 #endif /* INET6 */
@@ -1546,15 +1543,15 @@ bridge_ipsec(struct ifnet *ifp, struct ether_header *eh, int hassnap,
 
 		switch (proto) {
 		case IPPROTO_ESP:
-			m_copydata(m, hlen, sizeof(u_int32_t), (caddr_t)&spi);
+			m_copydata(m, hlen, sizeof(u_int32_t), &spi);
 			break;
 		case IPPROTO_AH:
 			m_copydata(m, hlen + sizeof(u_int32_t),
-			    sizeof(u_int32_t), (caddr_t)&spi);
+			    sizeof(u_int32_t), &spi);
 			break;
 		case IPPROTO_IPCOMP:
 			m_copydata(m, hlen + sizeof(u_int16_t),
-			    sizeof(u_int16_t), (caddr_t)&cpi);
+			    sizeof(u_int16_t), &cpi);
 			spi = htonl(ntohs(cpi));
 			break;
 		}
@@ -1654,8 +1651,7 @@ bridge_ip(struct ifnet *brifp, int dir, struct ifnet *ifp,
 		    ETHER_HDR_LEN))
 			return (m);
 
-		m_copydata(m, ETHER_HDR_LEN,
-		    LLC_SNAPFRAMELEN, (caddr_t)&llc);
+		m_copydata(m, ETHER_HDR_LEN, LLC_SNAPFRAMELEN, &llc);
 
 		if (llc.llc_dsap != LLC_SNAP_LSAP ||
 		    llc.llc_ssap != LLC_SNAP_LSAP ||
@@ -1885,8 +1881,7 @@ bridge_fragment(struct ifnet *brifp, struct ifnet *ifp, struct ether_header *eh,
 		    ETHER_HDR_LEN))
 			goto dropit;
 
-		m_copydata(m, ETHER_HDR_LEN,
-		    LLC_SNAPFRAMELEN, (caddr_t)&llc);
+		m_copydata(m, ETHER_HDR_LEN, LLC_SNAPFRAMELEN, &llc);
 
 		if (llc.llc_dsap != LLC_SNAP_LSAP ||
 		    llc.llc_ssap != LLC_SNAP_LSAP ||
diff --git a/sys/net/if_pfsync.c b/sys/net/if_pfsync.c
index b6c48a38339..f6088c8bee5 100644
--- a/sys/net/if_pfsync.c
+++ b/sys/net/if_pfsync.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_pfsync.c,v 1.286 2021/02/19 06:14:07 dlg Exp $	*/
+/*	$OpenBSD: if_pfsync.c,v 1.287 2021/02/25 02:48:21 dlg Exp $	*/
 
 /*
  * Copyright (c) 2002 Michael Shalayeff
@@ -792,7 +792,7 @@ pfsync_input(struct mbuf **mp, int *offp, int proto, int af)
 
 	offset += sizeof(*ph);
 	while (offset <= len - sizeof(subh)) {
-		m_copydata(m, offset, sizeof(subh), (caddr_t)&subh);
+		m_copydata(m, offset, sizeof(subh), &subh);
 		offset += sizeof(subh);
 
 		mlen = subh.len << 2;
diff --git a/sys/net/if_pppx.c b/sys/net/if_pppx.c
index 2c8caa94760..4ddaa76122e 100644
--- a/sys/net/if_pppx.c
+++ b/sys/net/if_pppx.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_pppx.c,v 1.109 2021/02/10 13:38:46 mvs Exp $ */
+/*	$OpenBSD: if_pppx.c,v 1.110 2021/02/25 02:48:21 dlg Exp $ */
 
 /*
  * Copyright (c) 2010 Claudio Jeker <claudio@openbsd.org>
@@ -1441,7 +1441,7 @@ pppac_qstart(struct ifqueue *ifq)
 		case AF_INET:
 			if (m->m_pkthdr.len < sizeof(struct ip))
 				goto bad;
-			m_copydata(m, 0, sizeof(struct ip), (caddr_t)&ip);
+			m_copydata(m, 0, sizeof(struct ip), &ip);
 			if (IN_MULTICAST(ip.ip_dst.s_addr)) {
 				/* pass a copy to pipex */
 				m0 = m_copym(m, 0, M_COPYALL, M_NOWAIT);
diff --git a/sys/net/if_switch.c b/sys/net/if_switch.c
index 447e164e5b0..c70761f8fd5 100644
--- a/sys/net/if_switch.c
+++ b/sys/net/if_switch.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_switch.c,v 1.41 2021/02/23 15:13:58 mvs Exp $	*/
+/*	$OpenBSD: if_switch.c,v 1.42 2021/02/25 02:48:21 dlg Exp $	*/
 
 /*
  * Copyright (c) 2016 Kazuya GODA <goda@openbsd.org>
@@ -692,7 +692,7 @@ switch_port_ingress(struct switch_softc *sc, struct ifnet *src_if,
 	sc->sc_if.if_ipackets++;
 	sc->sc_if.if_ibytes += m->m_pkthdr.len;
 
-	m_copydata(m, 0, ETHER_HDR_LEN, (caddr_t)&eh);
+	m_copydata(m, 0, ETHER_HDR_LEN, &eh);
 #if 0
 	/* It's the "#if 0" because it doesn't test switch(4) with pf(4)
 	 * or with ipsec(4).
@@ -722,7 +722,7 @@ switch_port_egress(struct switch_softc *sc, struct switch_fwdp_queue *fwdp_q,
 		bpf_mtap(sc->sc_if.if_bpf, m, BPF_DIRECTION_OUT);
 #endif
 
-	m_copydata(m, 0, ETHER_HDR_LEN, (caddr_t)&eh);
+	m_copydata(m, 0, ETHER_HDR_LEN, &eh);
 	TAILQ_FOREACH(swpo, fwdp_q, swpo_fwdp_next) {
 
 		if ((dst_if = if_get(swpo->swpo_ifindex)) == NULL)
@@ -1549,7 +1549,7 @@ ofp_split_mbuf(struct mbuf *m, struct mbuf **mtail)
 		return (-1);
 
 	m_copydata(m, offsetof(struct ofp_header, oh_length), sizeof(ohlen),
-	    (caddr_t)&ohlen);
+	    &ohlen);
 	ohlen = ntohs(ohlen);
 
 	/* We got an invalid packet header, skip it. */
diff --git a/sys/net/if_vlan.c b/sys/net/if_vlan.c
index b0bf72d2cb6..40a5fa2a938 100644
--- a/sys/net/if_vlan.c
+++ b/sys/net/if_vlan.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_vlan.c,v 1.205 2021/01/21 13:17:13 mvs Exp $	*/
+/*	$OpenBSD: if_vlan.c,v 1.206 2021/02/25 02:48:21 dlg Exp $	*/
 
 /*
  * Copyright 1998 Massachusetts Institute of Technology
@@ -340,7 +340,7 @@ vlan_inject(struct mbuf *m, uint16_t type, uint16_t tag)
 {
 	struct ether_vlan_header evh;
 
-	m_copydata(m, 0, ETHER_HDR_LEN, (caddr_t)&evh);
+	m_copydata(m, 0, ETHER_HDR_LEN, &evh);
 	evh.evl_proto = evh.evl_encap_proto;
 	evh.evl_encap_proto = htons(type);
 	evh.evl_tag = htons(tag);
diff --git a/sys/net/if_vxlan.c b/sys/net/if_vxlan.c
index 1652460c2dd..8d7fae6888b 100644
--- a/sys/net/if_vxlan.c
+++ b/sys/net/if_vxlan.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_vxlan.c,v 1.81 2020/08/21 22:59:27 kn Exp $	*/
+/*	$OpenBSD: if_vxlan.c,v 1.82 2021/02/25 02:48:21 dlg Exp $	*/
 
 /*
  * Copyright (c) 2013 Reyk Floeter <reyk@openbsd.org>
@@ -637,7 +637,7 @@ vxlan_lookup(struct mbuf *m, struct udphdr *uh, int iphlen,
 	skip = iphlen + sizeof(*uh);
 	if (m->m_pkthdr.len - skip < sizeof(v))
 		return (0);
-	m_copydata(m, skip, sizeof(v), (caddr_t)&v);
+	m_copydata(m, skip, sizeof(v), &v);
 	skip += sizeof(v);
 
 	if (v.vxlan_flags & htonl(VXLAN_RESERVED1) ||
diff --git a/sys/net/pipex.c b/sys/net/pipex.c
index 4420ad570ee..978d184494f 100644
--- a/sys/net/pipex.c
+++ b/sys/net/pipex.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: pipex.c,v 1.130 2021/01/19 19:37:42 mvs Exp $	*/
+/*	$OpenBSD: pipex.c,v 1.131 2021/02/25 02:48:21 dlg Exp $	*/
 
 /*-
  * Copyright (c) 2009 Internet Initiative Japan Inc.
@@ -991,7 +991,7 @@ pipex_common_input(struct pipex_session *session, struct mbuf *m0, int hlen,
 	case PPP_CCP:
 		code = 0;
 		KASSERT(m0->m_pkthdr.len >= hlen + ppphlen + 1);
-		m_copydata(m0, hlen + ppphlen, 1, (caddr_t)&code);
+		m_copydata(m0, hlen + ppphlen, 1, &code);
 		if (code != CCP_RESETREQ && code != CCP_RESETACK)
 			goto not_ours;
 		break;
@@ -1096,7 +1096,7 @@ pipex_pppoe_lookup_session(struct mbuf *m0)
 		return (NULL);
 
 	m_copydata(m0, sizeof(struct ether_header),
-	    sizeof(struct pipex_pppoe_header), (caddr_t)&pppoe);
+	    sizeof(struct pipex_pppoe_header), &pppoe);
 	pppoe.session_id = ntohs(pppoe.session_id);
 	session = pipex_lookup_by_session_id(PIPEX_PROTO_PPPOE,
 	    pppoe.session_id);
@@ -1123,7 +1123,7 @@ pipex_pppoe_input(struct mbuf *m0, struct pipex_session *session)
 	    sizeof(pppoe)));
 
 	m_copydata(m0, sizeof(struct ether_header),
-	    sizeof(struct pipex_pppoe_header), (caddr_t)&pppoe);
+	    sizeof(struct pipex_pppoe_header), &pppoe);
 
 	hlen = sizeof(struct ether_header) + sizeof(struct pipex_pppoe_header);
 	if ((m0 = pipex_common_input(session, m0, hlen, ntohs(pppoe.length)))
@@ -1287,7 +1287,7 @@ pipex_pptp_lookup_session(struct mbuf *m0)
 	}
 
 	/* get ip header info */
-	m_copydata(m0, 0, sizeof(struct ip), (caddr_t)&ip);
+	m_copydata(m0, 0, sizeof(struct ip), &ip);
 	hlen = ip.ip_hl << 2;
 
 	/*
@@ -1296,7 +1296,7 @@ pipex_pptp_lookup_session(struct mbuf *m0)
 	 */
 
 	/* get gre flags */
-	m_copydata(m0, hlen, sizeof(gre), (caddr_t)&gre);
+	m_copydata(m0, hlen, sizeof(gre), &gre);
 	flags = ntohs(gre.flags);
 
 	/* gre version must be '1' */
@@ -1521,7 +1521,7 @@ pipex_pptp_userland_lookup_session(struct mbuf *m0, struct sockaddr *sa)
 	}
 
 	/* get flags */
-	m_copydata(m0, 0, sizeof(struct pipex_gre_header), (caddr_t)&gre);
+	m_copydata(m0, 0, sizeof(struct pipex_gre_header), &gre);
 	flags = ntohs(gre.flags);
 
 	/* gre version must be '1' */
@@ -1571,7 +1571,7 @@ pipex_pptp_userland_output(struct mbuf *m0, struct pipex_session *session)
 	uint32_t val32;
 
 	len = sizeof(struct pipex_gre_header);
-	m_copydata(m0, 0, len, (caddr_t)&gre0);
+	m_copydata(m0, 0, len, &gre0);
 	gre = &gre0;
 	flags = ntohs(gre->flags);
 	if ((flags & PIPEX_GRE_SFLAG) != 0)
@@ -1801,7 +1801,7 @@ pipex_l2tp_input(struct mbuf *m0, int off0, struct pipex_session *session,
 	l2tp_session->ipsecflowinfo = ipsecflowinfo;
 	nsp = nrp = NULL;
 
-	m_copydata(m0, off0, sizeof(flags), (caddr_t)&flags);
+	m_copydata(m0, off0, sizeof(flags), &flags);
 
 	flags = ntohs(flags) & PIPEX_L2TP_FLAG_MASK;
 	KASSERT((flags & PIPEX_L2TP_FLAG_TYPE) == 0);
@@ -1953,7 +1953,7 @@ pipex_l2tp_userland_lookup_session(struct mbuf *m0, struct sockaddr *sa)
 	}
 
 	/* get flags */
-	m_copydata(m0, 0, sizeof(l2tp), (caddr_t)&l2tp);
+	m_copydata(m0, 0, sizeof(l2tp), &l2tp);
 	flags = ntohs(l2tp.flagsver);
 
 	/* l2tp version must be '2' */
diff --git a/sys/net/rtsock.c b/sys/net/rtsock.c
index f5f86e9f0e2..f7bb66b6c97 100644
--- a/sys/net/rtsock.c
+++ b/sys/net/rtsock.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: rtsock.c,v 1.305 2021/02/15 19:01:30 mvs Exp $	*/
+/*	$OpenBSD: rtsock.c,v 1.306 2021/02/25 02:48:21 dlg Exp $	*/
 /*	$NetBSD: rtsock.c,v 1.18 1996/03/29 00:32:10 cgd Exp $	*/
 
 /*
@@ -724,7 +724,7 @@ route_output(struct mbuf *m, struct socket *so, struct sockaddr *dstaddr,
 			goto fail;
 		}
 		rtm = malloc(len, M_RTABLE, M_WAITOK);
-		m_copydata(m, 0, len, (caddr_t)rtm);
+		m_copydata(m, 0, len, rtm);
 		break;
 	default:
 		error = EPROTONOSUPPORT;
diff --git a/sys/net/switchofp.c b/sys/net/switchofp.c
index 50afffca9e4..4b9e6a114fa 100644
--- a/sys/net/switchofp.c
+++ b/sys/net/switchofp.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: switchofp.c,v 1.78 2021/01/19 19:39:14 mvs Exp $	*/
+/*	$OpenBSD: switchofp.c,v 1.79 2021/02/25 02:48:21 dlg Exp $	*/
 
 /*
  * Copyright (c) 2016 Kazuya GODA <goda@openbsd.org>
@@ -3261,7 +3261,7 @@ swofp_action_pop_vlan(struct switch_softc *sc, struct mbuf *m,
 		return (NULL);
 	}
 
-	m_copydata(m, 0, ETHER_HDR_LEN, (caddr_t)&eh);
+	m_copydata(m, 0, ETHER_HDR_LEN, &eh);
 	eh.ether_type = evl->evl_proto;
 
 	m_adj(m, sizeof(*evl));
@@ -3346,7 +3346,7 @@ swofp_action_push_vlan(struct switch_softc *sc, struct mbuf *m,
 		swfcl->swfcl_vlan->vlan_vid = htons(1);
 	}
 
-	m_copydata(m, 0, ETHER_HDR_LEN, (caddr_t)&evh);
+	m_copydata(m, 0, ETHER_HDR_LEN, &evh);
 	evh.evl_proto = evh.evl_encap_proto;
 	evh.evl_encap_proto = oap->ap_ethertype;
 	evh.evl_tag = (swfcl->swfcl_vlan->vlan_vid |
@@ -5481,7 +5481,7 @@ swofp_group_mod_add(struct switch_softc *sc, struct mbuf *m)
 		}
 
 		m_copydata(m, offsetof(struct ofp_group_mod, gm_buckets),
-		    swge->swge_buckets_len, (caddr_t)swge->swge_buckets);
+		    swge->swge_buckets_len, swge->swge_buckets);
 	}
 
 	swofp_group_entry_add(sc, swge);
@@ -5541,7 +5541,7 @@ swofp_group_mod_modify(struct switch_softc *sc, struct mbuf *m)
 
 	if (swge->swge_buckets != NULL)
 		m_copydata(m, offsetof(struct ofp_group_mod, gm_buckets),
-		    swge->swge_buckets_len, (caddr_t)swge->swge_buckets);
+		    swge->swge_buckets_len, swge->swge_buckets);
 
 	m_freem(m);
 	return (0);
diff --git a/sys/netinet/ip_ah.c b/sys/netinet/ip_ah.c
index 5d1a30cc90e..c4a450f49cf 100644
--- a/sys/netinet/ip_ah.c
+++ b/sys/netinet/ip_ah.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_ah.c,v 1.145 2020/12/18 12:30:23 tobhe Exp $ */
+/*	$OpenBSD: ip_ah.c,v 1.146 2021/02/25 02:48:21 dlg Exp $ */
 /*
  * The authors of this code are John Ioannidis (ji@tla.org),
  * Angelos D. Keromytis (kermit@csd.uch.gr) and
@@ -327,7 +327,7 @@ ah_massage_headers(struct mbuf **m0, int af, int skip, int alg, int out)
 #ifdef INET6
 	case AF_INET6:  /* Ugly... */
 		/* Copy and "cook" the IPv6 header. */
-		m_copydata(m, 0, sizeof(ip6), (caddr_t) &ip6);
+		m_copydata(m, 0, sizeof(ip6), &ip6);
 
 		/* We don't do IPv6 Jumbograms. */
 		if (ip6.ip6_plen == 0) {
@@ -464,8 +464,7 @@ ah_massage_headers(struct mbuf **m0, int af, int skip, int alg, int out)
 					    sizeof(struct in6_addr) *
 					    (rh0->ip6r0_segleft - 1));
 
-					m_copydata(m, 0, sizeof(ip6),
-					    (caddr_t)&ip6);
+					m_copydata(m, 0, sizeof(ip6), &ip6);
 					addr[0] = ip6.ip6_dst;
 					ip6.ip6_dst = finaldst;
 					error = m_copyback(m, 0, sizeof(ip6),
@@ -539,13 +538,12 @@ ah_input(struct mbuf *m, struct tdb *tdb, int skip, int protoff)
 	rplen = AH_FLENGTH + sizeof(u_int32_t);
 
 	/* Save the AH header, we use it throughout. */
-	m_copydata(m, skip + offsetof(struct ah, ah_hl), sizeof(u_int8_t),
-	    (caddr_t) &hl);
+	m_copydata(m, skip + offsetof(struct ah, ah_hl), sizeof(u_int8_t), &hl);
 
 	/* Replay window checking, if applicable. */
 	if (tdb->tdb_wnd > 0) {
 		m_copydata(m, skip + offsetof(struct ah, ah_rpl),
-		    sizeof(u_int32_t), (caddr_t) &btsx);
+		    sizeof(u_int32_t), &btsx);
 		btsx = ntohl(btsx);
 
 		switch (checkreplaywindow(tdb, btsx, &esn, 0)) {
@@ -668,7 +666,7 @@ ah_input(struct mbuf *m, struct tdb *tdb, int skip, int protoff)
 	 * Save the authenticator, the skipped portion of the packet,
 	 * and the AH header.
 	 */
-	m_copydata(m, 0, skip + rplen + ahx->authsize, (caddr_t) (tc + 1));
+	m_copydata(m, 0, skip + rplen + ahx->authsize, tc + 1);
 
 	/* Zeroize the authenticator on the packet. */
 	m_copyback(m, skip + rplen, ahx->authsize, ipseczeroes, M_NOWAIT);
@@ -751,7 +749,7 @@ ah_input_cb(struct tdb *tdb, struct tdb_crypto *tc, struct mbuf *m, int clen)
 	/* Replay window checking, if applicable. */
 	if (tdb->tdb_wnd > 0) {
 		m_copydata(m, skip + offsetof(struct ah, ah_rpl),
-		    sizeof(u_int32_t), (caddr_t) &btsx);
+		    sizeof(u_int32_t), &btsx);
 		btsx = ntohl(btsx);
 
 		switch (checkreplaywindow(tdb, btsx, &esn, 1)) {
@@ -1034,7 +1032,7 @@ ah_output(struct mbuf *m, struct tdb *tdb, struct mbuf **mp, int skip,
 	ah = (struct ah *)(mtod(mi, caddr_t) + roff);
 
 	/* Initialize the AH header. */
-	m_copydata(m, protoff, sizeof(u_int8_t), (caddr_t) &ah->ah_nh);
+	m_copydata(m, protoff, sizeof(u_int8_t), &ah->ah_nh);
 	ah->ah_hl = (rplen + ahx->authsize - AH_FLENGTH) / sizeof(u_int32_t);
 	ah->ah_rv = 0;
 	ah->ah_spi = tdb->tdb_spi;
@@ -1087,7 +1085,7 @@ ah_output(struct mbuf *m, struct tdb *tdb, struct mbuf **mp, int skip,
 	}
 
 	/* Save the skipped portion of the packet. */
-	m_copydata(m, 0, skip, (caddr_t) (tc + 1));
+	m_copydata(m, 0, skip, tc + 1);
 
 	/*
 	 * Fix IP header length on the header used for
diff --git a/sys/netinet/ip_esp.c b/sys/netinet/ip_esp.c
index 36b761273cd..a74bfd341ac 100644
--- a/sys/netinet/ip_esp.c
+++ b/sys/netinet/ip_esp.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_esp.c,v 1.161 2020/12/18 12:30:23 tobhe Exp $ */
+/*	$OpenBSD: ip_esp.c,v 1.162 2021/02/25 02:48:21 dlg Exp $ */
 /*
  * The authors of this code are John Ioannidis (ji@tla.org),
  * Angelos D. Keromytis (kermit@csd.uch.gr) and
@@ -373,7 +373,7 @@ esp_input(struct mbuf *m, struct tdb *tdb, int skip, int protoff)
 	/* Replay window checking, if appropriate -- no value commitment. */
 	if (tdb->tdb_wnd > 0) {
 		m_copydata(m, skip + sizeof(u_int32_t), sizeof(u_int32_t),
-		    (unsigned char *) &btsx);
+		    &btsx);
 		btsx = ntohl(btsx);
 
 		switch (checkreplaywindow(tdb, btsx, &esn, 0)) {
@@ -484,7 +484,7 @@ esp_input(struct mbuf *m, struct tdb *tdb, int skip, int protoff)
 			crda->crd_len = m->m_pkthdr.len - (skip + alen);
 
 		/* Copy the authenticator */
-		m_copydata(m, m->m_pkthdr.len - alen, alen, (caddr_t)(tc + 1));
+		m_copydata(m, m->m_pkthdr.len - alen, alen, tc + 1);
 	} else
 		crde = &crp->crp_desc[0];
 
@@ -576,7 +576,7 @@ esp_input_cb(struct tdb *tdb, struct tdb_crypto *tc, struct mbuf *m, int clen)
 	/* Replay window checking, if appropriate */
 	if (tdb->tdb_wnd > 0) {
 		m_copydata(m, skip + sizeof(u_int32_t), sizeof(u_int32_t),
-		    (unsigned char *) &btsx);
+		    &btsx);
 		btsx = ntohl(btsx);
 
 		switch (checkreplaywindow(tdb, btsx, &esn, 1)) {
diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c
index 5deaa3822a8..a007aa6c2b3 100644
--- a/sys/netinet/ip_icmp.c
+++ b/sys/netinet/ip_icmp.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip_icmp.c,v 1.184 2020/12/20 21:15:47 bluhm Exp $	*/
+/*	$OpenBSD: ip_icmp.c,v 1.185 2021/02/25 02:48:21 dlg Exp $	*/
 /*	$NetBSD: ip_icmp.c,v 1.19 1996/02/13 23:42:22 christos Exp $	*/
 
 /*
@@ -259,7 +259,7 @@ icmp_do_error(struct mbuf *n, int type, int code, u_int32_t dest, int destmtu)
 	}
 
 	icp->icmp_code = code;
-	m_copydata(n, 0, icmplen, (caddr_t)&icp->icmp_ip);
+	m_copydata(n, 0, icmplen, &icp->icmp_ip);
 
 	/*
 	 * Now, copy old ip header (without options)
diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c
index 464130a457e..49f3aa89765 100644
--- a/sys/netinet/tcp_subr.c
+++ b/sys/netinet/tcp_subr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tcp_subr.c,v 1.175 2020/07/24 20:39:03 cheloha Exp $	*/
+/*	$OpenBSD: tcp_subr.c,v 1.176 2021/02/25 02:48:21 dlg Exp $	*/
 /*	$NetBSD: tcp_subr.c,v 1.22 1996/02/13 23:44:00 christos Exp $	*/
 
 /*
@@ -654,7 +654,7 @@ tcp6_ctlinput(int cmd, struct sockaddr *sa, u_int rdomain, void *d)
 			return;
 
 		bzero(&th, sizeof(th));
-		m_copydata(m, off, sizeof(*thp), (caddr_t)&th);
+		m_copydata(m, off, sizeof(*thp), &th);
 
 		/*
 		 * Check to see if we have a valid TCP connection
diff --git a/sys/netinet6/ip6_input.c b/sys/netinet6/ip6_input.c
index e4e89c5cd07..46b49ee1a9b 100644
--- a/sys/netinet6/ip6_input.c
+++ b/sys/netinet6/ip6_input.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ip6_input.c,v 1.230 2020/11/16 06:44:39 gnezdo Exp $	*/
+/*	$OpenBSD: ip6_input.c,v 1.231 2021/02/25 02:48:21 dlg Exp $	*/
 /*	$KAME: ip6_input.c,v 1.188 2001/03/29 05:34:31 itojun Exp $	*/
 
 /*
@@ -650,7 +650,7 @@ ip6_check_rh0hdr(struct mbuf *m, int *offp)
 				return (1);
 			}
 
-			m_copydata(m, off, sizeof(rthdr), (caddr_t)&rthdr);
+			m_copydata(m, off, sizeof(rthdr), &rthdr);
 
 			if (rthdr.ip6r_type == IPV6_RTHDR_TYPE_0) {
 				*offp += offsetof(struct ip6_rthdr, ip6r_type);
@@ -673,7 +673,7 @@ ip6_check_rh0hdr(struct mbuf *m, int *offp)
 				return (0);
 			}
 
-			m_copydata(m, off, sizeof(opt6), (caddr_t)&opt6);
+			m_copydata(m, off, sizeof(opt6), &opt6);
 
 			if (proto == IPPROTO_AH)
 				off += (opt6.ip6e_len + 2) * 4;
@@ -1143,7 +1143,7 @@ ip6_pullexthdr(struct mbuf *m, size_t off, int nxt)
 	if (off + sizeof(ip6e) > m->m_pkthdr.len)
 		return NULL;
 
-	m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e);
+	m_copydata(m, off, sizeof(ip6e), &ip6e);
 	if (nxt == IPPROTO_AH)
 		elen = (ip6e.ip6e_len + 2) << 2;
 	else
@@ -1195,7 +1195,7 @@ ip6_get_prevhdr(struct mbuf *m, int off)
 		len = sizeof(struct ip6_hdr);
 		nlen = 0;
 		while (len < off) {
-			m_copydata(m, len, sizeof(ip6e), (caddr_t)&ip6e);
+			m_copydata(m, len, sizeof(ip6e), &ip6e);
 
 			switch (nxt) {
 			case IPPROTO_FRAGMENT:
@@ -1236,7 +1236,7 @@ ip6_nexthdr(struct mbuf *m, int off, int proto, int *nxtp)
 	case IPPROTO_IPV6:
 		if (m->m_pkthdr.len < off + sizeof(ip6))
 			return -1;
-		m_copydata(m, off, sizeof(ip6), (caddr_t)&ip6);
+		m_copydata(m, off, sizeof(ip6), &ip6);
 		if (nxtp)
 			*nxtp = ip6.ip6_nxt;
 		off += sizeof(ip6);
@@ -1249,7 +1249,7 @@ ip6_nexthdr(struct mbuf *m, int off, int proto, int *nxtp)
 		 */
 		if (m->m_pkthdr.len < off + sizeof(fh))
 			return -1;
-		m_copydata(m, off, sizeof(fh), (caddr_t)&fh);
+		m_copydata(m, off, sizeof(fh), &fh);
 		if ((fh.ip6f_offlg & IP6F_OFF_MASK) != 0)
 			return -1;
 		if (nxtp)
@@ -1260,7 +1260,7 @@ ip6_nexthdr(struct mbuf *m, int off, int proto, int *nxtp)
 	case IPPROTO_AH:
 		if (m->m_pkthdr.len < off + sizeof(ip6e))
 			return -1;
-		m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e);
+		m_copydata(m, off, sizeof(ip6e), &ip6e);
 		if (nxtp)
 			*nxtp = ip6e.ip6e_nxt;
 		off += (ip6e.ip6e_len + 2) << 2;
@@ -1273,7 +1273,7 @@ ip6_nexthdr(struct mbuf *m, int off, int proto, int *nxtp)
 	case IPPROTO_DSTOPTS:
 		if (m->m_pkthdr.len < off + sizeof(ip6e))
 			return -1;
-		m_copydata(m, off, sizeof(ip6e), (caddr_t)&ip6e);
+		m_copydata(m, off, sizeof(ip6e), &ip6e);
 		if (nxtp)
 			*nxtp = ip6e.ip6e_nxt;
 		off += (ip6e.ip6e_len + 1) << 3;