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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /include/net/gtp.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/net/gtp.h')
-rw-r--r--include/net/gtp.h81
1 files changed, 81 insertions, 0 deletions
diff --git a/include/net/gtp.h b/include/net/gtp.h
new file mode 100644
index 000000000..2a503f035
--- /dev/null
+++ b/include/net/gtp.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _GTP_H_
+#define _GTP_H_
+
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <net/rtnetlink.h>
+
+/* General GTP protocol related definitions. */
+
+#define GTP0_PORT 3386
+#define GTP1U_PORT 2152
+
+/* GTP messages types */
+#define GTP_ECHO_REQ 1 /* Echo Request */
+#define GTP_ECHO_RSP 2 /* Echo Response */
+#define GTP_TPDU 255
+
+#define GTPIE_RECOVERY 14
+
+struct gtp0_header { /* According to GSM TS 09.60. */
+ __u8 flags;
+ __u8 type;
+ __be16 length;
+ __be16 seq;
+ __be16 flow;
+ __u8 number;
+ __u8 spare[3];
+ __be64 tid;
+} __attribute__ ((packed));
+
+struct gtp1_header { /* According to 3GPP TS 29.060. */
+ __u8 flags;
+ __u8 type;
+ __be16 length;
+ __be32 tid;
+} __attribute__ ((packed));
+
+struct gtp1_header_long { /* According to 3GPP TS 29.060. */
+ __u8 flags;
+ __u8 type;
+ __be16 length;
+ __be32 tid;
+ __be16 seq;
+ __u8 npdu;
+ __u8 next;
+} __packed;
+
+/* GTP Information Element */
+struct gtp_ie {
+ __u8 tag;
+ __u8 val;
+} __packed;
+
+struct gtp0_packet {
+ struct gtp0_header gtp0_h;
+ struct gtp_ie ie;
+} __packed;
+
+struct gtp1u_packet {
+ struct gtp1_header_long gtp1u_h;
+ struct gtp_ie ie;
+} __packed;
+
+struct gtp_pdu_session_info { /* According to 3GPP TS 38.415. */
+ u8 pdu_type;
+ u8 qfi;
+};
+
+static inline bool netif_is_gtp(const struct net_device *dev)
+{
+ return dev->rtnl_link_ops &&
+ !strcmp(dev->rtnl_link_ops->kind, "gtp");
+}
+
+#define GTP1_F_NPDU 0x01
+#define GTP1_F_SEQ 0x02
+#define GTP1_F_EXTHDR 0x04
+#define GTP1_F_MASK 0x07
+
+#endif