提交 628529b6 编写于 作者: J Jamal Hadi Salim 提交者: David S. Miller

[XFRM] Introduce standalone SAD lookup

This allows other in-kernel functions to do SAD lookups.
The only known user at the moment is pktgen.
Signed-off-by: NJamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 007a531b
......@@ -928,6 +928,10 @@ extern struct xfrm_state *xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t
struct flowi *fl, struct xfrm_tmpl *tmpl,
struct xfrm_policy *pol, int *err,
unsigned short family);
extern struct xfrm_state * xfrm_stateonly_find(xfrm_address_t *daddr,
xfrm_address_t *saddr,
unsigned short family,
u8 mode, u8 proto, u32 reqid);
extern int xfrm_state_check_expire(struct xfrm_state *x);
extern void xfrm_state_insert(struct xfrm_state *x);
extern int xfrm_state_add(struct xfrm_state *x);
......
......@@ -686,6 +686,37 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
return x;
}
struct xfrm_state *
xfrm_stateonly_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
unsigned short family, u8 mode, u8 proto, u32 reqid)
{
unsigned int h = xfrm_dst_hash(daddr, saddr, reqid, family);
struct xfrm_state *rx = NULL, *x = NULL;
struct hlist_node *entry;
spin_lock(&xfrm_state_lock);
hlist_for_each_entry(x, entry, xfrm_state_bydst+h, bydst) {
if (x->props.family == family &&
x->props.reqid == reqid &&
!(x->props.flags & XFRM_STATE_WILDRECV) &&
xfrm_state_addr_check(x, daddr, saddr, family) &&
mode == x->props.mode &&
proto == x->id.proto &&
x->km.state == XFRM_STATE_VALID) {
rx = x;
break;
}
}
if (rx)
xfrm_state_hold(rx);
spin_unlock(&xfrm_state_lock);
return rx;
}
EXPORT_SYMBOL(xfrm_stateonly_find);
static void __xfrm_state_insert(struct xfrm_state *x)
{
unsigned int h;
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册