[IPV6] MIP6: Loadable module support for MIPv6.

This patch makes MIPv6 loadable module named "mip6".

Here is a modprobe.conf(5) example to load it automatically
when user application uses XFRM state for MIPv6:

alias xfrm-type-10-43 mip6
alias xfrm-type-10-60 mip6

Some MIPv6 feature is not included by this modular, however,
it should not be affected to other features like either IPsec
or IPv6 with and without the patch.
We may discuss XFRM, MH (RAW socket) and ancillary data/sockopt
separately for future work.

Loadable features:
* MH receiving check (to send ICMP error back)
* RO header parsing and building (i.e. RH2 and HAO in DSTOPTS)
* XFRM policy/state database handling for RO

These are NOT covered as loadable:
* Home Address flags and its rule on source address selection
* XFRM sub policy (depends on its own kernel option)
* XFRM functions to receive RO as IPv6 extension header
* MH sending/receiving through raw socket if user application
  opens it (since raw socket allows to do so)
* RH2 sending as ancillary data
* RH2 operation with setsockopt(2)

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Masahide NAKAMURA
2007-06-26 23:56:32 -07:00
committed by David S. Miller
parent 136ebf08b4
commit 59fbb3a61e
18 changed files with 88 additions and 46 deletions

View File

@ -58,9 +58,6 @@
#ifdef CONFIG_IPV6_TUNNEL
#include <net/ip6_tunnel.h>
#endif
#ifdef CONFIG_IPV6_MIP6
#include <net/mip6.h>
#endif
#include <asm/uaccess.h>
#include <asm/system.h>
@ -853,9 +850,6 @@ static int __init inet6_init(void)
ipv6_frag_init();
ipv6_nodata_init();
ipv6_destopt_init();
#ifdef CONFIG_IPV6_MIP6
mip6_init();
#endif
/* Init v6 transport protocols. */
udpv6_init();
@ -921,9 +915,7 @@ static void __exit inet6_exit(void)
/* Cleanup code parts. */
ipv6_packet_cleanup();
#ifdef CONFIG_IPV6_MIP6
mip6_fini();
#endif
addrconf_cleanup();
ip6_flowlabel_cleanup();
ip6_route_cleanup();