store provider ID in umb(4), and display it in ifconfig. OK stsp deraadt

Previously only the provider's display name was used. The text used depends
on how the SIM is configured and not just on the network in use (for example,
an MVNO SIM on another network will often display the MVNO's name rather
than that of the underlying network).

I have a SIM that roams to any network in my country - whichever network
it roams onto, the display name is the same, so you can't tell which
network you're really using. By printing the provider ID (in GSM-land this
is MCC+MNC) it's easy to lookup and check this.

As the provider was printed on the ifconfig line also showing subscriber-id
and ICCID it was already a bit long, and adding the provider-id there is
a bit too much, so move it to the output line showing APN, now looking like

:        subscriber-id 2400xxxxxxxxxxx ICC-id 8946203xxxxxxxxxxxxx
:        device EM7455 IMEI 01458xxxxxxxxxx firmware SWI9X30C_02.24.0
:        APN key provider Tele2 IoT provider-id 23420

2 files changed, 6 insertions, 3 deletions

diff --git a/sys/dev/usb/if_umb.c b/sys/dev/usb/if_umb.c
index 9c585cf61af..2dac7d3fd1d 100644
--- a/sys/dev/usb/if_umb.c
+++ b/sys/dev/usb/if_umb.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_umb.c,v 1.45 2021/05/18 14:23:03 kevlo Exp $ */
+/*	$OpenBSD: if_umb.c,v 1.46 2021/07/04 19:22:31 sthen Exp $ */
 
 /*
  * Copyright (c) 2016 genua mbH
@@ -1490,9 +1490,10 @@ umb_decode_register_state(struct umb_softc *sc, void *data, int len)
 	sc->sc_info.regmode = letoh32(rs->regmode);
 	sc->sc_info.cellclass = letoh32(rs->curcellclass);
 
-	/* XXX should we remember the provider_id? */
 	umb_getinfobuf(data, len, rs->provname_offs, rs->provname_size,
 	    sc->sc_info.provider, sizeof (sc->sc_info.provider));
+	umb_getinfobuf(data, len, rs->provid_offs, rs->provid_size,
+	    sc->sc_info.providerid, sizeof (sc->sc_info.providerid));
 	umb_getinfobuf(data, len, rs->roamingtxt_offs, rs->roamingtxt_size,
 	    sc->sc_info.roamingtxt, sizeof (sc->sc_info.roamingtxt));
 
diff --git a/sys/dev/usb/if_umb.h b/sys/dev/usb/if_umb.h
index 082c0f0acd9..0b602b54258 100644
--- a/sys/dev/usb/if_umb.h
+++ b/sys/dev/usb/if_umb.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_umb.h,v 1.9 2021/03/30 15:59:04 patrick Exp $ */
+/*	$OpenBSD: if_umb.h,v 1.10 2021/07/04 19:22:32 sthen Exp $ */
 
 /*
  * Copyright (c) 2016 genua mbH
@@ -282,6 +282,8 @@ struct umb_info {
 	uint32_t		cellclass;
 #define UMB_PROVIDERNAME_MAXLEN		20
 	uint16_t		provider[UMB_PROVIDERNAME_MAXLEN];
+#define UMB_PROVIDERID_MAXLEN		20
+	uint16_t		providerid[UMB_PROVIDERID_MAXLEN];
 #define UMB_PHONENR_MAXLEN		22
 	uint16_t		pn[UMB_PHONENR_MAXLEN];
 #define UMB_SUBSCRIBERID_MAXLEN		15