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1. separating L2 tables (ARP, NDP) from the L3 routing tables
2. removing as much locking dependencies among these layers as
possible to allow for some parallelism in the search operations
3. simplify the logic in the routing code,
The most notable end result is the obsolescent of the route
cloning (RTF_CLONING) concept, which translated into code reduction
in both IPv4 ARP and IPv6 NDP related modules, and size reduction in
struct rtentry{}. The change in design obsoletes the semantics of
RTF_CLONING, RTF_WASCLONE and RTF_LLINFO routing flags. The userland
applications such as "arp" and "ndp" have been modified to reflect
those changes. The output from "netstat -r" shows only the routing
entries.
Quite a few developers have contributed to this project in the
past: Glebius Smirnoff, Luigi Rizzo, Alessandro Cerri, and
Andre Oppermann. And most recently:
- Kip Macy revised the locking code completely, thus completing
the last piece of the puzzle, Kip has also been conducting
active functional testing
- Sam Leffler has helped me improving/refactoring the code, and
provided valuable reviews
- Julian Elischer setup the perforce tree for me and has helped
me maintaining that branch before the svn conversion
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| Makefile | ||
| ns.c | ||
| README | ||
Warsaw, 1998.07.20 Small replacement for netstat ----------------------------- This program implements some basic functionality subset of normal netstat - it can display the routing table and protocol statistics. Large part of the code dealing with retrieving the routing table via sysctl(3) was taken from code examples written by Richard Stevens to accompany his excellent book. Usage ----- ns [-rsi] [-p proto] [-w wait] where -r print routing table (default) -s print protocol statistics -i print interface statistics -p proto display only statistics related to this protocol, where 'proto' is one of: - ip - tcp - udp - icmp - bdg - bridging stats, if 'ns' was compiled with bridging support (flag BRIDGING in Makefile) -w wait continuous display, repeat every 'wait' seconds. Bugs ---- * 'ns' doesn't resolve IP addresses to names * well, real netstat provides _much_ more information... but this one needs to be small, right? :-) Andrzej Bialecki <abial@freebsd.org> $FreeBSD$