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[XFRM] IPV6: Update outbound state timestamp for each sending.

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With this patch transformation state is updated last used time
for each sending. Xtime is used for it like other state lifetime
expiration.
Mobile IPv6 enabled nodes will want to know traffic status of each
binding (e.g. judgement to request binding refresh by correspondent node,
or to keep home/care-of nonce alive by mobile node).
The last used timestamp is an important hint about it.
Based on MIPL2 kernel patch.

This patch was also written by: Henrik Petander <petander@tcs.hut.fi>

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Masahide NAKAMURA 2006-08-23 18:20:16 -07:00 committed by David S. Miller
parent 060f02a3bd
commit 9afaca0579
4 changed files with 9 additions and 0 deletions
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1
include/linux/xfrm.h
View file

@ -236,6 +236,7 @@ enum xfrm_attr_type_t {
XFRMA_ETIMER_THRESH,
XFRMA_SRCADDR, /* xfrm_address_t */
XFRMA_COADDR, /* xfrm_address_t */
XFRMA_LASTUSED,
__XFRMA_MAX
#define XFRMA_MAX (__XFRMA_MAX - 1)

3
include/net/xfrm.h
View file

@ -167,6 +167,9 @@ struct xfrm_state
struct xfrm_lifetime_cur curlft;
struct timer_list timer;
/* Last used time */
u64 lastused;
/* Reference to data common to all the instances of this
* transformer. */
struct xfrm_type *type;

2
net/ipv6/xfrm6_output.c
View file

@ -75,6 +75,8 @@ static int xfrm6_output_one(struct sk_buff *skb)
x->curlft.bytes += skb->len;
x->curlft.packets++;
if (x->props.mode == XFRM_MODE_ROUTEOPTIMIZATION)
x->lastused = (u64)xtime.tv_sec;
spin_unlock_bh(&x->lock);

3
net/xfrm/xfrm_user.c
View file

@ -595,6 +595,9 @@ static int dump_one_state(struct xfrm_state *x, int count, void *ptr)
if (x->coaddr)
RTA_PUT(skb, XFRMA_COADDR, sizeof(*x->coaddr), x->coaddr);
if (x->lastused)
RTA_PUT(skb, XFRMA_LASTUSED, sizeof(x->lastused), &x->lastused);
nlh->nlmsg_len = skb->tail - b;
out:
sp->this_idx++;