Improve logging reading packets from gtp device

Change-Id: Ic3d9ea319122acbaf99ca7d6ff615b5812a085f8
---
M src/osmo-upf/upf_gtpu_echo.c
1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/osmo-upf/upf_gtpu_echo.c b/src/osmo-upf/upf_gtpu_echo.c
index f4bbb76..ae370e6 100644
--- a/src/osmo-upf/upf_gtpu_echo.c
+++ b/src/osmo-upf/upf_gtpu_echo.c
@@ -13,8 +13,12 @@
 #define GTP1U_PORT	2152
 
 enum gtp1u_msgt {
-	GTP1U_MSGTYPE_ECHO_REQ = 1,
-	GTP1U_MSGTYPE_ECHO_RSP = 2,
+	GTP1U_MSGTYPE_ECHO_REQ			= 1,
+	GTP1U_MSGTYPE_ECHO_RSP			= 2,
+	GTP1U_MSGTYPE_ERRR_IND			= 26,
+	GTP1U_MSGTYPE_SUPP_EXT_HDR_NOTIF	= 31,
+	GTP1U_MSGTYPE_END_MARKER		= 254,
+	GTP1U_MSGTYPE_GPDU			= 255,
 };
 
 enum gtp1u_iei {
@@ -159,7 +163,7 @@
 	return rc;
 }
 
-int upf_gtpu_echo_read_cb(struct osmo_fd *ofd, unsigned int what)
+int upf_gtpu_read_cb(struct osmo_fd *ofd, unsigned int what)
 {
 	struct upf_gtp_dev *dev = ofd->data;
 
@@ -208,8 +212,18 @@
 	case GTP1U_MSGTYPE_ECHO_RSP:
 		rx_echo_resp(dev, &remote, h, sz);
 		return 0;
+	case GTP1U_MSGTYPE_ERRR_IND:
+		/* 3GPP TS 29.281 7.3.1: Log "Tunnel Endpoint Identifier Data I" and "GTP-U Peer Address" */
+		LOG_GTP_DEV(dev, LOGL_NOTICE, "%s rx: GTPv1-U Error Indication not supported\n",
+			    osmo_sockaddr_to_str(&remote));
+		return 0;
+	case GTP1U_MSGTYPE_GPDU:
+		LOG_GTP_DEV(dev, LOGL_NOTICE, "%s rx: GTPv1-U PDU TEID=0x%08x over slow path not supported\n",
+			    osmo_sockaddr_to_str(&remote), osmo_load32be(&h->tei));
+		return 0;
 	default:
-		LOG_GTP_DEV(dev, LOGL_ERROR, "rx: GTPv1-U message type %u not supported\n", h->msg_type);
+		LOG_GTP_DEV(dev, LOGL_ERROR, "%s rx: GTPv1-U message type %u not supported\n",
+			    osmo_sockaddr_to_str(&remote), h->msg_type);
 		return -1;
 	}
 }
@@ -226,7 +240,7 @@
 	/* make sure there is no cb yet that this would be replacing. */
 	OSMO_ASSERT(dev->gtpv1.ofd.cb == NULL);
 
-	dev->gtpv1.ofd.cb = upf_gtpu_echo_read_cb;
+	dev->gtpv1.ofd.cb = upf_gtpu_read_cb;
 	dev->gtpv1.ofd.data = dev;
 	return 0;
 }

