CVS commit: src/sys/netinet

["Kengo NAKAHARA" <knakahara%netbsd.org@localhost>]

Module Name:    src
Committed By:   knakahara
Date:           Wed Dec  7 08:28:46 UTC 2022

Modified Files:
        src/sys/netinet: ip_encap.c ip_encap.h

Log Message:
Implement encap_attach_addr() which is used by IP-encaped tunnels.

The tunnels attached by encap_attach() can process receiving packets
fastly as the softc is searched by radix-tree.  However, the tunnels
cannot use priority function which decides tunnel's softc by not only
source and destination but also other informations.
On the other hand, the tunnels attached by encap_attach_func() can
use priority function. However, the tunnels can be slow receiving
processing as the softc is searched by linear search (and uses each
priority function).

encap_attach_addr() can be used for tunnels which is fixed tunnel
source address and tunnel destination address.  The tunnels attached
by encap_attach_addr() is searched by thmap(9), so the receiving processing
can be fast.  Moreover, the tunnels can use priority function.


To generate a diff of this commit:
cvs rdiff -u -r1.75 -r1.76 src/sys/netinet/ip_encap.c
cvs rdiff -u -r1.26 -r1.27 src/sys/netinet/ip_encap.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.