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xfrm: make xfrm modes builtin

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after previous changes, xfrm_mode contains no function pointers anymore
and all modules defining such struct contain no code except an init/exit
functions to register the xfrm_mode struct with the xfrm core.

Just place the xfrm modes core and remove the modules,
the run-time xfrm_mode register/unregister functionality is removed.

Before:

    text    data     bss      dec filename
    7523     200    2364    10087 net/xfrm/xfrm_input.o
   40003     628     440    41071 net/xfrm/xfrm_state.o
15730338 6937080 4046908 26714326 vmlinux

    7389     200    2364    9953  net/xfrm/xfrm_input.o
   40574     656     440   41670  net/xfrm/xfrm_state.o
15730084 6937068 4046908 26714060 vmlinux

The xfrm*_mode_{transport,tunnel,beet} modules are gone.

v2: replace CONFIG_INET6_XFRM_MODE_* IS_ENABLED guards with CONFIG_IPV6
    ones rather than removing them.

Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Florian Westphal
2019-03-29 21:16:31 +01:00
committed by Steffen Klassert
parent 733a5fac2f
commit 4c145dce26
20 changed files with 80 additions and 492 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
net/ipv6/Kconfig
View File

@@ -135,44 +135,11 @@ config INET6_TUNNEL
tristate
default n
config INET6_XFRM_MODE_TRANSPORT
tristate "IPv6: IPsec transport mode"
default IPV6
select XFRM
---help---
Support for IPsec transport mode.
If unsure, say Y.
config INET6_XFRM_MODE_TUNNEL
tristate "IPv6: IPsec tunnel mode"
default IPV6
select XFRM
---help---
Support for IPsec tunnel mode.
If unsure, say Y.
config INET6_XFRM_MODE_BEET
tristate "IPv6: IPsec BEET mode"
default IPV6
select XFRM
---help---
Support for IPsec BEET mode.
If unsure, say Y.
config INET6_XFRM_MODE_ROUTEOPTIMIZATION
tristate "IPv6: MIPv6 route optimization mode"
select XFRM
---help---
Support for MIPv6 route optimization mode.
config IPV6_VTI
tristate "Virtual (secure) IPv6: tunneling"
select IPV6_TUNNEL
select NET_IP_TUNNEL
depends on INET6_XFRM_MODE_TUNNEL
select XFRM
---help---
Tunneling means encapsulating data of one protocol type within
another protocol and sending it over a channel that understands the

4
net/ipv6/Makefile
View File

@@ -35,10 +35,6 @@ obj-$(CONFIG_INET6_ESP_OFFLOAD) += esp6_offload.o
obj-$(CONFIG_INET6_IPCOMP) += ipcomp6.o
obj-$(CONFIG_INET6_XFRM_TUNNEL) += xfrm6_tunnel.o
obj-$(CONFIG_INET6_TUNNEL) += tunnel6.o
obj-$(CONFIG_INET6_XFRM_MODE_TRANSPORT) += xfrm6_mode_transport.o
obj-$(CONFIG_INET6_XFRM_MODE_TUNNEL) += xfrm6_mode_tunnel.o
obj-$(CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION) += xfrm6_mode_ro.o
obj-$(CONFIG_INET6_XFRM_MODE_BEET) += xfrm6_mode_beet.o
obj-$(CONFIG_IPV6_MIP6) += mip6.o
obj-$(CONFIG_IPV6_ILA) += ila/
obj-$(CONFIG_NETFILTER) += netfilter/

2
net/ipv6/ip6_vti.c
View File

@@ -342,7 +342,7 @@ static int vti6_rcv_cb(struct sk_buff *skb, int err)
struct net_device *dev;
struct pcpu_sw_netstats *tstats;
struct xfrm_state *x;
struct xfrm_mode *inner_mode;
const struct xfrm_mode *inner_mode;
struct ip6_tnl *t = XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6;
u32 orig_mark = skb->mark;
int ret;

42
net/ipv6/xfrm6_mode_beet.c
View File

@@ -1,42 +0,0 @@
/*
* xfrm6_mode_beet.c - BEET mode encapsulation for IPv6.
*
* Copyright (c) 2006 Diego Beltrami <diego.beltrami@gmail.com>
* Miika Komu <miika@iki.fi>
* Herbert Xu <herbert@gondor.apana.org.au>
* Abhinav Pathak <abhinav.pathak@hiit.fi>
* Jeff Ahrenholz <ahrenholz@gmail.com>
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/stringify.h>
#include <net/dsfield.h>
#include <net/dst.h>
#include <net/inet_ecn.h>
#include <net/ipv6.h>
#include <net/xfrm.h>
static struct xfrm_mode xfrm6_beet_mode = {
.owner = THIS_MODULE,
.encap = XFRM_MODE_BEET,
.flags = XFRM_MODE_FLAG_TUNNEL,
.family = AF_INET6,
};
static int __init xfrm6_beet_init(void)
{
return xfrm_register_mode(&xfrm6_beet_mode);
}
static void __exit xfrm6_beet_exit(void)
{
xfrm_unregister_mode(&xfrm6_beet_mode);
}
module_init(xfrm6_beet_init);
module_exit(xfrm6_beet_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS_XFRM_MODE(AF_INET6, XFRM_MODE_BEET);

55
net/ipv6/xfrm6_mode_ro.c
View File

@@ -1,55 +0,0 @@
/*
* xfrm6_mode_ro.c - Route optimization mode for IPv6.
*
* Copyright (C)2003-2006 Helsinki University of Technology
* Copyright (C)2003-2006 USAGI/WIDE Project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* Authors:
* Noriaki TAKAMIYA @USAGI
* Masahide NAKAMURA @USAGI
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/stringify.h>
#include <linux/time.h>
#include <net/ipv6.h>
#include <net/xfrm.h>
static struct xfrm_mode xfrm6_ro_mode = {
.owner = THIS_MODULE,
.encap = XFRM_MODE_ROUTEOPTIMIZATION,
.family = AF_INET6,
};
static int __init xfrm6_ro_init(void)
{
return xfrm_register_mode(&xfrm6_ro_mode);
}
static void __exit xfrm6_ro_exit(void)
{
xfrm_unregister_mode(&xfrm6_ro_mode);
}
module_init(xfrm6_ro_init);
module_exit(xfrm6_ro_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS_XFRM_MODE(AF_INET6, XFRM_MODE_ROUTEOPTIMIZATION);

37
net/ipv6/xfrm6_mode_transport.c
View File

@@ -1,37 +0,0 @@
/*
* xfrm6_mode_transport.c - Transport mode encapsulation for IPv6.
*
* Copyright (C) 2002 USAGI/WIDE Project
* Copyright (c) 2004-2006 Herbert Xu <herbert@gondor.apana.org.au>
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/stringify.h>
#include <net/dst.h>
#include <net/ipv6.h>
#include <net/xfrm.h>
#include <net/protocol.h>
static struct xfrm_mode xfrm6_transport_mode = {
.owner = THIS_MODULE,
.encap = XFRM_MODE_TRANSPORT,
.family = AF_INET6,
};
static int __init xfrm6_transport_init(void)
{
return xfrm_register_mode(&xfrm6_transport_mode);
}
static void __exit xfrm6_transport_exit(void)
{
xfrm_unregister_mode(&xfrm6_transport_mode);
}
module_init(xfrm6_transport_init);
module_exit(xfrm6_transport_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS_XFRM_MODE(AF_INET6, XFRM_MODE_TRANSPORT);

45
net/ipv6/xfrm6_mode_tunnel.c
View File

@@ -1,45 +0,0 @@
/*
* xfrm6_mode_tunnel.c - Tunnel mode encapsulation for IPv6.
*
* Copyright (C) 2002 USAGI/WIDE Project
* Copyright (c) 2004-2006 Herbert Xu <herbert@gondor.apana.org.au>
*/
#include <linux/gfp.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/stringify.h>
#include <net/dsfield.h>
#include <net/dst.h>
#include <net/inet_ecn.h>
#include <net/ip6_route.h>
#include <net/ipv6.h>
#include <net/xfrm.h>
/* Add encapsulation header.
*
* The top IP header will be constructed per RFC 2401.
*/
static struct xfrm_mode xfrm6_tunnel_mode = {
.owner = THIS_MODULE,
.encap = XFRM_MODE_TUNNEL,
.flags = XFRM_MODE_FLAG_TUNNEL,
.family = AF_INET6,
};
static int __init xfrm6_mode_tunnel_init(void)
{
return xfrm_register_mode(&xfrm6_tunnel_mode);
}
static void __exit xfrm6_mode_tunnel_exit(void)
{
xfrm_unregister_mode(&xfrm6_tunnel_mode);
}
module_init(xfrm6_mode_tunnel_init);
module_exit(xfrm6_mode_tunnel_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS_XFRM_MODE(AF_INET6, XFRM_MODE_TUNNEL);