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[XFRM]: Allow XFRM_ACQ_EXPIRES to be tunable via sysctl. 

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-05-25 00:41:38 -07:00
parent 4738d2fa59
commit 01e67d08fa
3 changed files with 18 additions and 7 deletions
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1
include/net/xfrm.h
View File

@ -237,7 +237,6 @@ extern int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo);
extern int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo);
extern void km_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c);
extern void km_state_notify(struct xfrm_state *x, struct km_event *c);
#define XFRM_ACQ_EXPIRES 30
struct xfrm_tmpl;
extern int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol);

9
net/core/sysctl_net_core.c
View File

@ -25,6 +25,7 @@ extern int sysctl_core_destroy_delay;
extern u32 sysctl_xfrm_aevent_etime;
extern u32 sysctl_xfrm_aevent_rseqth;
extern int sysctl_xfrm_larval_drop;
extern u32 sysctl_xfrm_acq_expires;
#endif
ctl_table core_table[] = {
@ -127,6 +128,14 @@ ctl_table core_table[] = {
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "xfrm_acq_expires",
.data = &sysctl_xfrm_acq_expires,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
#endif /* CONFIG_XFRM */
#endif /* CONFIG_NET */
{

15
net/xfrm/xfrm_state.c
View File

@ -21,18 +21,21 @@
#include <linux/cache.h>
#include <asm/uaccess.h>
#include <linux/audit.h>
#include <linux/cache.h>
#include "xfrm_hash.h"
struct sock *xfrm_nl;
EXPORT_SYMBOL(xfrm_nl);
u32 sysctl_xfrm_aevent_etime = XFRM_AE_ETIME;
u32 sysctl_xfrm_aevent_etime __read_mostly = XFRM_AE_ETIME;
EXPORT_SYMBOL(sysctl_xfrm_aevent_etime);
u32 sysctl_xfrm_aevent_rseqth = XFRM_AE_SEQT_SIZE;
u32 sysctl_xfrm_aevent_rseqth __read_mostly = XFRM_AE_SEQT_SIZE;
EXPORT_SYMBOL(sysctl_xfrm_aevent_rseqth);
u32 sysctl_xfrm_acq_expires __read_mostly = 30;
/* Each xfrm_state may be linked to two tables:
1. Hash table by (spi,daddr,ah/esp) to find SA by SPI. (input,ctl)
@ -622,8 +625,8 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
h = xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto, family);
hlist_add_head(&x->byspi, xfrm_state_byspi+h);
}
x->lft.hard_add_expires_seconds = XFRM_ACQ_EXPIRES;
x->timer.expires = jiffies + XFRM_ACQ_EXPIRES*HZ;
x->lft.hard_add_expires_seconds = sysctl_xfrm_acq_expires;
x->timer.expires = jiffies + sysctl_xfrm_acq_expires*HZ;
add_timer(&x->timer);
xfrm_state_num++;
xfrm_hash_grow_check(x->bydst.next != NULL);
@ -772,9 +775,9 @@ static struct xfrm_state *__find_acq_core(unsigned short family, u8 mode, u32 re
x->props.family = family;
x->props.mode = mode;
x->props.reqid = reqid;
x->lft.hard_add_expires_seconds = XFRM_ACQ_EXPIRES;
x->lft.hard_add_expires_seconds = sysctl_xfrm_acq_expires;
xfrm_state_hold(x);
x->timer.expires = jiffies + XFRM_ACQ_EXPIRES*HZ;
x->timer.expires = jiffies + sysctl_xfrm_acq_expires*HZ;
add_timer(&x->timer);
hlist_add_head(&x->bydst, xfrm_state_bydst+h);
h = xfrm_src_hash(daddr, saddr, family);