netdev - [PATCH net-next 3/6] cls_api: add flow_indr_block

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Message-Id: <1564560753-32603-4-git-send-email-wenxu@ucloud.cn>
Date:   Wed, 31 Jul 2019 16:12:30 +0800
From:   wenxu@...oud.cn
To:     pablo@...filter.org, fw@...len.de, jakub.kicinski@...ronome.com,
        jiri@...nulli.us
Cc:     netfilter-devel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH net-next 3/6] cls_api: add flow_indr_block_call function

From: wenxu <wenxu@...oud.cn>

This patch make indr_block_call don't access struct tc_indr_block_cb
and tc_indr_block_dev directly

Signed-off-by: wenxu <wenxu@...oud.cn>
---
 net/sched/cls_api.c | 33 ++++++++++++++++++++-------------
 1 file changed, 20 insertions(+), 13 deletions(-)

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index f9643fa..617b098 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -783,13 +783,30 @@ void tc_indr_block_cb_unregister(struct net_device *dev,
 }
 EXPORT_SYMBOL_GPL(tc_indr_block_cb_unregister);
 
+static void flow_indr_block_call(struct flow_block *flow_block,
+				 struct net_device *dev,
+				 struct flow_block_offload *bo,
+				 enum flow_block_command command)
+{
+	struct tc_indr_block_cb *indr_block_cb;
+	struct tc_indr_block_dev *indr_dev;
+
+	indr_dev = tc_indr_block_dev_lookup(dev);
+	if (!indr_dev)
+		return;
+
+	indr_dev->flow_block = command == FLOW_BLOCK_BIND ? flow_block : NULL;
+
+	list_for_each_entry(indr_block_cb, &indr_dev->cb_list, list)
+		indr_block_cb->cb(dev, indr_block_cb->cb_priv, TC_SETUP_BLOCK,
+				  bo);
+}
+
 static void tc_indr_block_call(struct tcf_block *block, struct net_device *dev,
 			       struct tcf_block_ext_info *ei,
 			       enum flow_block_command command,
 			       struct netlink_ext_ack *extack)
 {
-	struct tc_indr_block_cb *indr_block_cb;
-	struct tc_indr_block_dev *indr_dev;
 	struct flow_block_offload bo = {
 		.command	= command,
 		.binder_type	= ei->binder_type,
@@ -800,17 +817,7 @@ static void tc_indr_block_call(struct tcf_block *block, struct net_device *dev,
 	};
 	INIT_LIST_HEAD(&bo.cb_list);
 
-	indr_dev = tc_indr_block_dev_lookup(dev);
-	if (!indr_dev)
-		return;
-
-	indr_dev->flow_block = command == FLOW_BLOCK_BIND ?
-					  &block->flow_block : NULL;
-
-	list_for_each_entry(indr_block_cb, &indr_dev->cb_list, list)
-		indr_block_cb->cb(dev, indr_block_cb->cb_priv, TC_SETUP_BLOCK,
-				  &bo);
-
+	flow_indr_block_call(&block->flow_block, dev, &bo, command);
 	tcf_block_setup(block, &bo);
 }
 
-- 
1.8.3.1