35 lines
1.3 KiB
ReStructuredText
35 lines
1.3 KiB
ReStructuredText
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.. SPDX-License-Identifier: GPL-2.0
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========================================
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Bare UDP Tunnelling Module Documentation
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========================================
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There are various L3 encapsulation standards using UDP being discussed to
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leverage the UDP based load balancing capability of different networks.
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MPLSoUDP (__ https://tools.ietf.org/html/rfc7510) is one among them.
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The Bareudp tunnel module provides a generic L3 encapsulation tunnelling
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support for tunnelling different L3 protocols like MPLS, IP, NSH etc. inside
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a UDP tunnel.
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Usage
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------
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1) Device creation & deletion
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a) ip link add dev bareudp0 type bareudp dstport 6635 ethertype 0x8847.
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This creates a bareudp tunnel device which tunnels L3 traffic with ethertype
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0x8847 (MPLS traffic). The destination port of the UDP header will be set to
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6635.The device will listen on UDP port 6635 to receive traffic.
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b) ip link delete bareudp0
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2) Device Usage
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The bareudp device could be used along with OVS or flower filter in TC.
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The OVS or TC flower layer must set the tunnel information in SKB dst field before
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sending packet buffer to the bareudp device for transmission. On reception the
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bareudp device extracts and stores the tunnel information in SKB dst field before
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passing the packet buffer to the network stack.
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