mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-18 02:04:05 +08:00
83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*
|
|
* xfrm4_state.c
|
|
*
|
|
* Changes:
|
|
* YOSHIFUJI Hideaki @USAGI
|
|
* Split up af-specific portion
|
|
*
|
|
*/
|
|
|
|
#include <net/ip.h>
|
|
#include <net/xfrm.h>
|
|
#include <linux/pfkeyv2.h>
|
|
#include <linux/ipsec.h>
|
|
|
|
static struct xfrm_state_afinfo xfrm4_state_afinfo;
|
|
|
|
static int xfrm4_init_flags(struct xfrm_state *x)
|
|
{
|
|
if (ipv4_config.no_pmtu_disc)
|
|
x->props.flags |= XFRM_STATE_NOPMTUDISC;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
__xfrm4_init_tempsel(struct xfrm_state *x, struct flowi *fl,
|
|
struct xfrm_tmpl *tmpl,
|
|
xfrm_address_t *daddr, xfrm_address_t *saddr)
|
|
{
|
|
x->sel.daddr.a4 = fl->fl4_dst;
|
|
x->sel.saddr.a4 = fl->fl4_src;
|
|
x->sel.dport = xfrm_flowi_dport(fl);
|
|
x->sel.dport_mask = ~0;
|
|
x->sel.sport = xfrm_flowi_sport(fl);
|
|
x->sel.sport_mask = ~0;
|
|
x->sel.prefixlen_d = 32;
|
|
x->sel.prefixlen_s = 32;
|
|
x->sel.proto = fl->proto;
|
|
x->sel.ifindex = fl->oif;
|
|
x->id = tmpl->id;
|
|
if (x->id.daddr.a4 == 0)
|
|
x->id.daddr.a4 = daddr->a4;
|
|
x->props.saddr = tmpl->saddr;
|
|
if (x->props.saddr.a4 == 0)
|
|
x->props.saddr.a4 = saddr->a4;
|
|
if (tmpl->mode == XFRM_MODE_TUNNEL && x->props.saddr.a4 == 0) {
|
|
struct rtable *rt;
|
|
struct flowi fl_tunnel = {
|
|
.nl_u = {
|
|
.ip4_u = {
|
|
.daddr = x->id.daddr.a4,
|
|
}
|
|
}
|
|
};
|
|
if (!xfrm_dst_lookup((struct xfrm_dst **)&rt,
|
|
&fl_tunnel, AF_INET)) {
|
|
x->props.saddr.a4 = rt->rt_src;
|
|
dst_release(&rt->u.dst);
|
|
}
|
|
}
|
|
x->props.mode = tmpl->mode;
|
|
x->props.reqid = tmpl->reqid;
|
|
x->props.family = AF_INET;
|
|
}
|
|
|
|
static struct xfrm_state_afinfo xfrm4_state_afinfo = {
|
|
.family = AF_INET,
|
|
.init_flags = xfrm4_init_flags,
|
|
.init_tempsel = __xfrm4_init_tempsel,
|
|
};
|
|
|
|
void __init xfrm4_state_init(void)
|
|
{
|
|
xfrm_state_register_afinfo(&xfrm4_state_afinfo);
|
|
}
|
|
|
|
#if 0
|
|
void __exit xfrm4_state_fini(void)
|
|
{
|
|
xfrm_state_unregister_afinfo(&xfrm4_state_afinfo);
|
|
}
|
|
#endif /* 0 */
|
|
|