3tun

Base on vtun-3.0.2, has following improvement:

Larger tunnel MTU supported, up to 8000 bytes.
Packet merge mode, can merge 2 or 3 pkt in one crypting frame. It can improve performance of tunnels with hw crypto devices that perform better in large frame encrypt/decrypting(like: MT7621 SoC).

As you know, regular packet size is about 100 - 1500 bytes.

(default: merge 2) (option -a: off; option -b: merge 3)
TCP_CORK mode support.

(default:TCP_CORK=0) (option -c: on)
TCP_NODELAY(negative Nagle's Algorithm) configurable.

(default:TCP_NODELAY=0) (option -d: on)
GCC cross compile arm/mips/x86_64 compatible.

(#if defined(__mips__) ... #endif) (__arm__ __x86_64__)
Legacy packet format(vtun-3.0.2) compatible. The tunnel peers having new/old version can talk to determine the right working mode.

(option -l: force_legacy mode, acts just like an old vtun-3.0.2 tunnel)
OpenSSL 1.1 and crypto engine support.(via patch)
The 'multithreading' branch code support bi-direction of tunnel doing full duplex transmission without a r/w lock. Which gains about 5%-10% performance increasing.

(option -T: threading_mode)

Name		Name	Last commit message	Last commit date
Latest commit History 98 Commits
freebsd		freebsd
generic		generic
linux		linux
openbsd		openbsd
packages		packages
patches		patches
scripts		scripts
svr4		svr4
ChangeLog		ChangeLog
Credits		Credits
FAQ		FAQ
Makefile.in		Makefile.in
README		README
README.LZO		README.LZO
README.Setup		README.Setup
README.Shaper		README.Shaper
README.md		README.md
TODO		TODO
aclocal.m4		aclocal.m4
auth.c		auth.c
auth.h		auth.h
cfg_file.l		cfg_file.l
cfg_file.y		cfg_file.y
cfg_kwords.h		cfg_kwords.h
client.c		client.c
compat.h		compat.h
config.guess		config.guess
config.h.in		config.h.in
config.sub		config.sub
configure		configure
configure.in		configure.in
driver.h		driver.h
install-sh		install-sh
lfd_encrypt.c		lfd_encrypt.c
lfd_legacy_encrypt.c		lfd_legacy_encrypt.c
lfd_lzo.c		lfd_lzo.c
lfd_shaper.c		lfd_shaper.c
lfd_zlib.c		lfd_zlib.c
lib.c		lib.c
lib.h		lib.h
linkfd.c		linkfd.c
linkfd.h		linkfd.h
llist.c		llist.c
llist.h		llist.h
lock.c		lock.c
lock.h		lock.h
main.c		main.c
netlib.c		netlib.c
netlib.h		netlib.h
server.c		server.c
tunnel.c		tunnel.c
vtun.drivers		vtun.drivers
vtun.h		vtun.h
vtun_socks.h		vtun_socks.h
vtund.8		vtund.8
vtund.conf		vtund.conf
vtund.conf.5		vtund.conf.5

Provide feedback