From a253d94dca75fa9af19716f4a5f9a36375223593 Mon Sep 17 00:00:00 2001
From: zhanghailiang <zhang.zhanghailiang@huawei.com>
Date: Tue, 1 Mar 2016 13:37:02 +0800
Subject: filter: Add 'status' property for filter object

With this property, users can control if this filter is 'on'
or 'off'. The default behavior for filter is 'on'.

For some types of filters, they may need to react to status changing,
So here, we introduced status changing callback/notifier for filter class.

We will skip the disabled ('off') filter when delivering packets in net layer.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Yang Hongyang <hongyang.yang@easystack.cn>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 include/net/filter.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'include')

diff --git a/include/net/filter.h b/include/net/filter.h
index 5639976..cfb1172 100644
--- a/include/net/filter.h
+++ b/include/net/filter.h
@@ -36,12 +36,15 @@ typedef ssize_t (FilterReceiveIOV)(NetFilterState *nc,
                                    int iovcnt,
                                    NetPacketSent *sent_cb);
 
+typedef void (FilterStatusChanged) (NetFilterState *nf, Error **errp);
+
 typedef struct NetFilterClass {
     ObjectClass parent_class;
 
     /* optional */
     FilterSetup *setup;
     FilterCleanup *cleanup;
+    FilterStatusChanged *status_changed;
     /* mandatory */
     FilterReceiveIOV *receive_iov;
 } NetFilterClass;
@@ -55,6 +58,7 @@ struct NetFilterState {
     char *netdev_id;
     NetClientState *netdev;
     NetFilterDirection direction;
+    bool on;
     QTAILQ_ENTRY(NetFilterState) next;
 };
 
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