xfrm: add support to HW update soft and hard limits
Both in RX and TX, the traffic that performs IPsec packet offload
transformation is accounted by HW. It is needed to properly handle
hard limits that require to drop the packet.
It means that XFRM core needs to update internal counters with the one
that accounted by the HW, so new callbacks are introduced in this patch.
In case of soft or hard limit is occurred, the driver should call to
xfrm_state_check_expire() that will perform key rekeying exactly as
done by XFRM core.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 2a190e8..cc1d0ea 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -570,6 +570,8 @@ static enum hrtimer_restart xfrm_timer_handler(struct hrtimer *me)
int err = 0;
spin_lock(&x->lock);
+ xfrm_dev_state_update_curlft(x);
+
if (x->km.state == XFRM_STATE_DEAD)
goto out;
if (x->km.state == XFRM_STATE_EXPIRED)
@@ -1936,6 +1938,8 @@ EXPORT_SYMBOL(xfrm_state_update);
int xfrm_state_check_expire(struct xfrm_state *x)
{
+ xfrm_dev_state_update_curlft(x);
+
if (!x->curlft.use_time)
x->curlft.use_time = ktime_get_real_seconds();
