Catch up with 6edfd17: mechanically rename IFCAP_NOMAP to IFCAP_MEXTPG.

Originally IFCAP_NOMAP meant that the mbuf has external storage pointer
that points to unmapped address.  Then, this was extended to array of
such pointers.  Then, such mbufs were augmented with header/trailer.
Basically, extended mbufs are extended, and set of features is subject
to change.  The new name should be generic enough to avoid further
renaming.

(cherry-picked from commit 3f43ada)

sbin/ifconfig/ifconfig.8

@@ -28,7 +28,7 @@
 .\"     From: @(#)ifconfig.8	8.3 (Berkeley) 1/5/94
 .\" $FreeBSD$
 .\"
-.Dd November 1, 2020
+.Dd January 28, 2021
 .Dt IFCONFIG 8
 .Os
 .Sh NAME
@@ -554,12 +554,14 @@ and
 Enable use of rate limiting (packet pacing) for TLS offload.
 .It Fl txtlsrtlmt
 Disable use of rate limiting for TLS offload.
-.It Cm nomap
-If the driver supports unmapped network buffers,
-enable them on the interface.
-.It Fl nomap
-If the driver supports unmapped network buffers,
-disable them on the interface.
+.It Cm mextpg
+If the driver supports extended multi-page
+.Xr mbuf 9
+buffers, enable them on the interface.
+.It Fl mextpg
+If the driver supports extended multi-page
+.Xr mbuf 9
+biffers, disable them on the interface.
 .It Cm wol , wol_ucast , wol_mcast , wol_magic
 Enable Wake On Lan (WOL) support, if available.
 WOL is a facility whereby a machine in a low power state may be woken

sbin/ifconfig/ifconfig.c

@@ -1658,8 +1658,8 @@ static struct cmd basic_cmds[] = {
 	DEF_CMD("-link2",	-IFF_LINK2,	setifflags),
 	DEF_CMD("monitor",	IFF_MONITOR,	setifflags),
 	DEF_CMD("-monitor",	-IFF_MONITOR,	setifflags),
-	DEF_CMD("nomap",	IFCAP_NOMAP,	setifcap),
-	DEF_CMD("-nomap",	-IFCAP_NOMAP,	setifcap),
+	DEF_CMD("mextpg",	IFCAP_MEXTPG,	setifcap),
+	DEF_CMD("-mextpg",	-IFCAP_MEXTPG,	setifcap),
 	DEF_CMD("staticarp",	IFF_STATICARP,	setifflags),
 	DEF_CMD("-staticarp",	-IFF_STATICARP,	setifflags),
 	DEF_CMD("rxcsum6",	IFCAP_RXCSUM_IPV6,	setifcap),

sys/dev/cxgbe/t4_main.c

@@ -1782,7 +1782,7 @@ cxgbe_probe(device_t dev)
 #define T4_CAP (IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU | IFCAP_HWCSUM | \
     IFCAP_VLAN_HWCSUM | IFCAP_TSO | IFCAP_JUMBO_MTU | IFCAP_LRO | \
     IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWCSUM_IPV6 | IFCAP_HWSTATS | \
-    IFCAP_HWRXTSTMP | IFCAP_NOMAP)
+    IFCAP_HWRXTSTMP | IFCAP_MEXTPG)
 #define T4_CAP_ENABLE (T4_CAP)
 
 static int
@@ -2182,8 +2182,8 @@ cxgbe_ioctl(struct ifnet *ifp, unsigned long cmd, caddr_t data)
 					rxq->iq.flags &= ~IQ_RX_TIMESTAMP;
 			}
 		}
-		if (mask & IFCAP_NOMAP)
-			ifp->if_capenable ^= IFCAP_NOMAP;
+		if (mask & IFCAP_MEXTPG)
+			ifp->if_capenable ^= IFCAP_MEXTPG;
 
 #ifdef KERN_TLS
 		if (mask & IFCAP_TXTLS)

sys/dev/mlx5/mlx5_en/mlx5_en_main.c

@@ -3379,8 +3379,8 @@ mlx5e_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
 				    "tso6 disabled due to -txcsum6.\n");
 			}
 		}
-		if (mask & IFCAP_NOMAP)
-			ifp->if_capenable ^= IFCAP_NOMAP;
+		if (mask & IFCAP_MEXTPG)
+			ifp->if_capenable ^= IFCAP_MEXTPG;
 		if (mask & IFCAP_TXTLS4)
 			ifp->if_capenable ^= IFCAP_TXTLS4;
 		if (mask & IFCAP_TXTLS6)
@@ -4397,7 +4397,7 @@ mlx5e_create_ifp(struct mlx5_core_dev *mdev)
 	ifp->if_capabilities |= IFCAP_LRO;
 	ifp->if_capabilities |= IFCAP_TSO | IFCAP_VLAN_HWTSO;
 	ifp->if_capabilities |= IFCAP_HWSTATS | IFCAP_HWRXTSTMP;
-	ifp->if_capabilities |= IFCAP_NOMAP;
+	ifp->if_capabilities |= IFCAP_MEXTPG;
 	ifp->if_capabilities |= IFCAP_TXTLS4 | IFCAP_TXTLS6;
 #ifdef RATELIMIT
 	ifp->if_capabilities |= IFCAP_TXRTLMT | IFCAP_TXTLS_RTLMT;

sys/kern/uipc_ktls.c

@@ -868,7 +868,7 @@ ktls_alloc_snd_tag(struct inpcb *inp, struct ktls_session *tls, bool force,
 	params.hdr.numa_domain = inp->inp_numa_domain;
 	INP_RUNLOCK(inp);
 
-	if ((ifp->if_capenable & IFCAP_NOMAP) == 0) {	
+	if ((ifp->if_capenable & IFCAP_MEXTPG) == 0) {
 		error = EOPNOTSUPP;
 		goto out;
 	}

sys/net/if.h

@@ -245,7 +245,7 @@ struct if_data {
 #define	IFCAP_HWSTATS		0x800000 /* manages counters internally */
 #define	IFCAP_TXRTLMT		0x1000000 /* hardware supports TX rate limiting */
 #define	IFCAP_HWRXTSTMP		0x2000000 /* hardware rx timestamping */
-#define	IFCAP_NOMAP		0x4000000 /* can TX unmapped mbufs */
+#define	IFCAP_MEXTPG		0x4000000 /* understands M_EXTPG mbufs */
 #define	IFCAP_TXTLS4		0x8000000 /* can do TLS encryption and segmentation for TCP */
 #define	IFCAP_TXTLS6		0x10000000 /* can do TLS encryption and segmentation for TCP6 */
 #define	IFCAP_VXLAN_HWCSUM	0x20000000 /* can do IFCAN_HWCSUM on VXLANs */

sys/net/if_vlan.c

@@ -1797,8 +1797,8 @@ vlan_capabilities(struct ifvlan *ifv)
 	 * are prepended in normal mbufs to unmapped mbufs holding
 	 * payload data.
 	 */
-	cap |= (p->if_capabilities & IFCAP_NOMAP);
-	ena |= (mena & IFCAP_NOMAP);
+	cap |= (p->if_capabilities & IFCAP_MEXTPG);
+	ena |= (mena & IFCAP_MEXTPG);
 
 	/*
 	 * If the parent interface can offload encryption and segmentation

sys/net/iflib.c

@@ -4231,7 +4231,7 @@ iflib_if_qflush(if_t ifp)
 #define IFCAP_FLAGS (IFCAP_HWCSUM_IPV6 | IFCAP_HWCSUM | IFCAP_LRO | \
 		     IFCAP_TSO | IFCAP_VLAN_HWTAGGING | IFCAP_HWSTATS | \
 		     IFCAP_VLAN_MTU | IFCAP_VLAN_HWFILTER | \
-		     IFCAP_VLAN_HWTSO | IFCAP_VLAN_HWCSUM | IFCAP_NOMAP)
+		     IFCAP_VLAN_HWTSO | IFCAP_VLAN_HWCSUM | IFCAP_MEXTPG)
 
 static int
 iflib_if_ioctl(if_t ifp, u_long command, caddr_t data)
@@ -4358,7 +4358,7 @@ iflib_if_ioctl(if_t ifp, u_long command, caddr_t data)
 
 		oldmask = if_getcapenable(ifp);
 		mask = ifr->ifr_reqcap ^ oldmask;
-		mask &= ctx->ifc_softc_ctx.isc_capabilities | IFCAP_NOMAP;
+		mask &= ctx->ifc_softc_ctx.isc_capabilities | IFCAP_MEXTPG;
 		setmask = 0;
 #ifdef TCP_OFFLOAD
 		setmask |= mask & (IFCAP_TOE4|IFCAP_TOE6);
@@ -4759,9 +4759,9 @@ iflib_device_register(device_t dev, void *sc, if_shared_ctx_t sctx, if_ctx_t *ct
 #endif
 
 	if_setcapabilities(ifp,
-	    scctx->isc_capabilities | IFCAP_HWSTATS | IFCAP_NOMAP);
+	    scctx->isc_capabilities | IFCAP_HWSTATS | IFCAP_MEXTPG);
 	if_setcapenable(ifp,
-	    scctx->isc_capenable | IFCAP_HWSTATS | IFCAP_NOMAP);
+	    scctx->isc_capenable | IFCAP_HWSTATS | IFCAP_MEXTPG);
 
 	if (scctx->isc_ntxqsets == 0 || (scctx->isc_ntxqsets_max && scctx->isc_ntxqsets_max < scctx->isc_ntxqsets))
 		scctx->isc_ntxqsets = scctx->isc_ntxqsets_max;

sys/netinet/ip_output.c

@@ -746,7 +746,7 @@ ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags,
 		}
 		in_delayed_cksum(m);
 		m->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA;
-	} else if ((ifp->if_capenable & IFCAP_NOMAP) == 0) {
+	} else if ((ifp->if_capenable & IFCAP_MEXTPG) == 0) {
 		m = mb_unmapped_to_ext(m);
 		if (m == NULL) {
 			IPSTAT_INC(ips_odropped);

sys/netinet6/ip6_output.c

@@ -225,7 +225,7 @@ ip6_output_delayed_csum(struct mbuf *m, struct ifnet *ifp, int csum_flags,
 #if defined(SCTP) || defined(SCTP_SUPPORT)
 	    (csum_flags & CSUM_SCTP_IPV6) ||
 #endif
-	    (!frag && (ifp->if_capenable & IFCAP_NOMAP) == 0)) {
+	    (!frag && (ifp->if_capenable & IFCAP_MEXTPG) == 0)) {
 		m = mb_unmapped_to_ext(m);
 		if (m == NULL) {
 			if (frag)