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userspace: Add GTP-U support.

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GTP, GPRS Tunneling Protocol, is a group of IP-based communications
protocols used to carry general packet radio service (GPRS) within
GSM, UMTS and LTE networks.  GTP protocol has two parts: Signalling
(GTP-Control, GTP-C) and User data (GTP-User, GTP-U). GTP-C is used
for setting up GTP-U protocol, which is an IP-in-UDP tunneling
protocol. Usually GTP is used in connecting between base station for
radio, Serving Gateway (S-GW), and PDN Gateway (P-GW).

This patch implements GTP-U protocol for userspace datapath,
supporting only required header fields and G-PDU message type.
See spec in:
https://tools.ietf.org/html/draft-hmm-dmm-5g-uplane-analysis-00

Tested-at: https://travis-ci.org/github/williamtu/ovs-travis/builds/666518784
Signed-off-by: Feng Yang <yangfengee04@gmail.com>
Co-authored-by: Feng Yang <yangfengee04@gmail.com>
Signed-off-by: Yi Yang <yangyi01@inspur.com>
Co-authored-by: Yi Yang <yangyi01@inspur.com>
Signed-off-by: William Tu <u9012063@gmail.com>
Acked-by: Ben Pfaff <blp@ovn.org>
This commit is contained in:
William Tu
2019-11-25 11:19:23 -08:00
parent f598f46212
commit 3c6d05a02e
30 changed files with 752 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
lib/dpif-netlink.c
View File

@@ -745,6 +745,9 @@ get_vport_type(const struct dpif_netlink_vport *vport)
case OVS_VPORT_TYPE_IP6GRE:
return "ip6gre";
case OVS_VPORT_TYPE_GTPU:
return "gtpu";
case OVS_VPORT_TYPE_UNSPEC:
case __OVS_VPORT_TYPE_MAX:
break;
@@ -778,6 +781,8 @@ netdev_to_ovs_vport_type(const char *type)
return OVS_VPORT_TYPE_IP6GRE;
} else if (!strcmp(type, "gre")) {
return OVS_VPORT_TYPE_GRE;
} else if (!strcmp(type, "gtpu")) {
return OVS_VPORT_TYPE_GTPU;
} else {
return OVS_VPORT_TYPE_UNSPEC;
}