3a92669b3a
AX.25 addresses are based on Amateur radio callsigns followed by an SSID like XXXXXX-SS where the callsign is up to 6 characters which are either letters or digits and the SSID is a decimal number in the range 0..15. Amateur radio callsigns are assigned by a country's relevant authorities and are 3..6 characters though a few countries have assigned callsigns longer than that. AX.25 is not able to handle such longer callsigns. Being based on HDLC AX.25 encodes addresses by shifting them one bit left thus zeroing bit 0, the HDLC extension bit for all but the last bit of a packet's address field but for our purposes here we're not considering the HDLC extension bit that is it will always be zero. Linux' internal representation of AX.25 addresses in Linux is very similar to this on the on-air or on-the-wire format. The callsign is padded to 6 octets by adding spaces, followed by the SSID octet then all 7 octets are left-shifted by one byte. This for example turns "LINUX-1" where the callsign is LINUX and SSID is 1 into 98:92:9c:aa:b0:40:02. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David Ahern <dsahern@kernel.org> |
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|---|---|---|
| bash-completion | ||
| bridge | ||
| dcb | ||
| devlink | ||
| doc/actions | ||
| etc/iproute2 | ||
| examples/bpf | ||
| genl | ||
| include | ||
| ip | ||
| lib | ||
| man | ||
| misc | ||
| netem | ||
| rdma | ||
| schema | ||
| tc | ||
| testsuite | ||
| tipc | ||
| vdpa | ||
| .clang-format | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| Makefile | ||
| README | ||
| README.devel | ||
| configure | ||
README
This is a set of utilities for Linux networking.
Information:
https://wiki.linuxfoundation.org/networking/iproute2
Download:
http://www.kernel.org/pub/linux/utils/net/iproute2/
Stable version repository:
git://git.kernel.org/pub/scm/network/iproute2/iproute2.git
Development repository:
git://git.kernel.org/pub/scm/network/iproute2/iproute2-next.git
How to compile this.
--------------------
1. libdbm
arpd needs to have the berkeleydb development libraries. For Debian
users this is the package with a name like libdbX.X-dev.
DBM_INCLUDE points to the directory with db_185.h which
is the include file used by arpd to get to the old format Berkeley
database routines. Often this is in the db-devel package.
2. make
The makefile will automatically build a config.mk file which
contains definitions of libraries that may or may not be available
on the system such as: ATM, ELF, MNL, and SELINUX.
3. include/uapi
This package includes matching sanitized kernel headers because
the build environment may not have up to date versions. See Makefile
if you have special requirements and need to point at different
kernel include files.
Stephen Hemminger
stephen@networkplumber.org
Alexey Kuznetsov
kuznet@ms2.inr.ac.ru