net: core: introduce mini_Qdisc and eliminate usage of tp->q for clsact fastpath
In sch_handle_egress and sch_handle_ingress tp->q is used only in order
to update stats. So stats and filter list are the only things that are
needed in clsact qdisc fastpath processing. Introduce new mini_Qdisc
struct to hold those items. Also, introduce a helper to swap the
mini_Qdisc structures in case filter list head changes.
This removes need for tp->q usage without added overhead.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 5e02f79..7de7656 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1559,6 +1559,8 @@ enum netdev_priv_flags {
*
* @rx_handler: handler for received packets
* @rx_handler_data: XXX: need comments on this one
+ * @miniq_ingress: ingress/clsact qdisc specific data for
+ * ingress processing
* @ingress_queue: XXX: need comments on this one
* @broadcast: hw bcast address
*
@@ -1576,7 +1578,8 @@ enum netdev_priv_flags {
* @tx_global_lock: XXX: need comments on this one
*
* @xps_maps: XXX: need comments on this one
- *
+ * @miniq_egress: clsact qdisc specific data for
+ * egress processing
* @watchdog_timeo: Represents the timeout that is used by
* the watchdog (see dev_watchdog())
* @watchdog_timer: List of timers
@@ -1795,7 +1798,7 @@ struct net_device {
void __rcu *rx_handler_data;
#ifdef CONFIG_NET_CLS_ACT
- struct tcf_proto __rcu *ingress_cl_list;
+ struct mini_Qdisc __rcu *miniq_ingress;
#endif
struct netdev_queue __rcu *ingress_queue;
#ifdef CONFIG_NETFILTER_INGRESS
@@ -1826,7 +1829,7 @@ struct net_device {
struct xps_dev_maps __rcu *xps_maps;
#endif
#ifdef CONFIG_NET_CLS_ACT
- struct tcf_proto __rcu *egress_cl_list;
+ struct mini_Qdisc __rcu *miniq_egress;
#endif
/* These may be needed for future network-power-down code. */