Index: share/man/man4/ixl.4
===================================================================
RCS file: /cvs/src/share/man/man4/ixl.4,v
retrieving revision 1.4
diff -u -p -r1.4 ixl.4
--- share/man/man4/ixl.4	4 May 2019 15:57:20 -0000	1.4
+++ share/man/man4/ixl.4	11 Jul 2020 01:15:33 -0000
@@ -27,6 +27,19 @@ The
 .Nm
 driver supports Intel 700 series controllers based on the
 Intel X710, XXV710, XL710, and X722 Ethernet chipsets.
+.Pp
+The functionality of the Intel 700 series Ethernet controllers has improved as newer versions of firmware have been released.
+To ensure correct driver operation, apply the most recent
+.Pq stable
+firmware update for the network controller.
+.Pp
+The
+.Nm ixl
+driver supports querying pluggable transceivers for information and
+diagnostics.
+.\" via ifconfig ixlX sff .
+This functionality is available on controllers providing API version
+1.6 and higher.
 .Sh SEE ALSO
 .Xr arp 4 ,
 .Xr ifmedia 4 ,
Index: sys/dev/pci/if_ixl.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/if_ixl.c,v
retrieving revision 1.65
diff -u -p -r1.65 if_ixl.c
--- sys/dev/pci/if_ixl.c	11 Jul 2020 00:54:19 -0000	1.65
+++ sys/dev/pci/if_ixl.c	11 Jul 2020 01:15:33 -0000
@@ -3918,7 +3918,11 @@ err:
 	return (rv);
 }
 
-/* this returns -1 on failure, or the sff module type */
+/*
+ * this returns -2 on software/driver failure, -1 for problems
+ * talking to the hardware, or the sff module type.
+ */
+
 static int
 ixl_get_module_type(struct ixl_softc *sc)
 {
@@ -3927,7 +3931,7 @@ ixl_get_module_type(struct ixl_softc *sc
 	int rv;
 
 	if (ixl_dmamem_alloc(sc, &idm, IXL_AQ_BUFLEN, 0) != 0)
-		return (-1);
+		return (-2);
 
 	rv = ixl_get_phy_abilities(sc, &idm);
 	if (rv != IXL_AQ_RC_OK) {
@@ -4061,8 +4065,10 @@ ixl_get_sffpage(struct ixl_softc *sc, st
 	int error;
 
 	switch (ixl_get_module_type(sc)) {
+	case -2:
+		return (ENOMEM);
 	case -1:
-		return (EIO);
+		return (ENXIO);
 	case IXL_SFF8024_ID_SFP:
 		ops = &ixl_sfp_ops;
 		break;