openvswitch: Remove flow member from struct ovs_skb_cb

The 'flow' memeber was chosen for removal because it's only used
in ovs_execute_actions() we can pass it as argument to this
function.

Signed-off-by: Lorand Jakab <lojakab@cisco.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>

diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 9fd33c0..f7e5891 100644 (file)
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -865,14 +865,11 @@ static void process_deferred_actions(struct datapath *dp)
 
 /* Execute a list of actions against 'skb'. */
 int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb,
-                       struct sw_flow_key *key)
+                       struct sw_flow_actions *acts, struct sw_flow_key *key)
 {
        int level = this_cpu_read(exec_actions_level);
-       struct sw_flow_actions *acts;
        int err;
 
-       acts = rcu_dereference(OVS_CB(skb)->flow->sf_acts);
-
        this_cpu_inc(exec_actions_level);
        OVS_CB(skb)->egress_tun_info = NULL;
        err = do_execute_actions(dp, skb, key,

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index cdbc44c..4fd8a45 100644 (file)
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -257,6 +257,7 @@ void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key)
        const struct vport *p = OVS_CB(skb)->input_vport;
        struct datapath *dp = p->dp;
        struct sw_flow *flow;
+       struct sw_flow_actions *sf_acts;
        struct dp_stats_percpu *stats;
        u64 *stats_counter;
        u32 n_mask_hit;
@@ -282,10 +283,10 @@ void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key)
                goto out;
        }
 
-       OVS_CB(skb)->flow = flow;
+       ovs_flow_stats_update(flow, key->tp.flags, skb);
+       sf_acts = rcu_dereference(flow->sf_acts);
+       ovs_execute_actions(dp, skb, sf_acts, key);
 
-       ovs_flow_stats_update(OVS_CB(skb)->flow, key->tp.flags, skb);
-       ovs_execute_actions(dp, skb, key);
        stats_counter = &stats->n_hit;
 
 out:
@@ -524,6 +525,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
        struct sw_flow_actions *acts;
        struct sk_buff *packet;
        struct sw_flow *flow;
+       struct sw_flow_actions *sf_acts;
        struct datapath *dp;
        struct ethhdr *eth;
        struct vport *input_vport;
@@ -579,7 +581,6 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
        rcu_assign_pointer(flow->sf_acts, acts);
 
        OVS_CB(packet)->egress_tun_info = NULL;
-       OVS_CB(packet)->flow = flow;
        packet->priority = flow->key.phy.priority;
        packet->mark = flow->key.phy.skb_mark;
 
@@ -597,9 +598,10 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
                goto err_unlock;
 
        OVS_CB(packet)->input_vport = input_vport;
+       sf_acts = rcu_dereference(flow->sf_acts);
 
        local_bh_disable();
-       err = ovs_execute_actions(dp, packet, &flow->key);
+       err = ovs_execute_actions(dp, packet, sf_acts, &flow->key);
        local_bh_enable();
        rcu_read_unlock();
 

diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h
index 9741354..1c56a80 100644 (file)
--- a/net/openvswitch/datapath.h
+++ b/net/openvswitch/datapath.h
@@ -94,14 +94,12 @@ struct datapath {
 
 /**
  * struct ovs_skb_cb - OVS data in skb CB
- * @flow: The flow associated with this packet.  May be %NULL if no flow.
  * @egress_tun_key: Tunnel information about this packet on egress path.
  * NULL if the packet is not being tunneled.
  * @input_vport: The original vport packet came in on. This value is cached
  * when a packet is received by OVS.
  */
 struct ovs_skb_cb {
-       struct sw_flow          *flow;
        struct ovs_tunnel_info  *egress_tun_info;
        struct vport            *input_vport;
 };
@@ -194,7 +192,7 @@ struct sk_buff *ovs_vport_cmd_build_info(struct vport *, u32 pid, u32 seq,
                                         u8 cmd);
 
 int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb,
-                       struct sw_flow_key *);
+                       struct sw_flow_actions *acts, struct sw_flow_key *);
 
 void ovs_dp_notify_wq(struct work_struct *work);