description | Muen SK virtual networking Linux kernel module |
owner | Reto Buerki |
last change | Wed, 23 Sep 2020 09:11:46 +0000 (11:11 +0200) |
URL | https://git.codelabs.ch/muen/linux/muennet.git |
git@git.codelabs.ch:/muen/linux/muennet.git |
The muennet Linux kernel module implements a virtual network interface driver which sends and receives data via shared memory channels provided by the Muen Separation Kernel.
From a user-space perspective, a network interface created using the muennet kernel module behaves just like an ordinary network interface.
Currently, the following protocols are supported:
SOCK_RAW
) for custom dataThe following command inserts the muennet module into the kernel. The module parameters configure the module to create a virtual net0 network interface using channel_in for data input and channel_out for data output. The reader and writer protocols are arbitrary values which must match between communicating endpoints.
$ modprobe muennet \
name=net0 \
reader_protocol=2 \
writer_protocol=2 \
in=channel_in \
out=channel_out \
flags=net_hdr
The net_hdr flag is required to send IP traffic over the network interface. It can be omitted if the communicating endpoints apply a custom protocol over raw data.
The eth_dev flag specifies that the network interface implements an ethernet device. This allows users to operate on layer 2 ethernet frames and gives them full control over the ethernet header.
Configure the newly created network interface as usual:
$ ifconfig net0 192.168.1.1
$ ip route add 192.168.1.0/24 dev net0
The module parameters accept a list of values in order to create multiple network interfaces with associated settings:
$ modprobe muennet \
name=net0,net1 \
reader_protocol=12,2 \
writer_protocol=8,2 \
in=testchannel_1,testchannel_3 \
out=testchannel_2,testchannel_4 \
flags=net_hdr,net_hdr
Use the modinfo
command to see all supported module parameters with their
explanation.
2 weeks ago | eth_dev-tailroom | shortlog | log | tree |
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