netdev - Re: [PATCH net-next v4 1/3] flow_offload: move tc indirect block to flow offload

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Date:   Mon, 29 Jul 2019 15:13:10 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     wenxu <wenxu@...oud.cn>
Cc:     pablo@...filter.org, fw@...len.de, jakub.kicinski@...ronome.com,
        netfilter-devel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v4 1/3] flow_offload: move tc indirect block to
 flow offload

Mon, Jul 29, 2019 at 02:47:07PM CEST, wenxu@...oud.cn wrote:
>
>在 2019/7/29 19:13, Jiri Pirko 写道:
>> Sun, Jul 28, 2019 at 08:52:47AM CEST, wenxu@...oud.cn wrote:
>>> From: wenxu <wenxu@...oud.cn>
>>>
>>> move tc indirect block to flow_offload and rename
>>> it to flow indirect block.The nf_tables can use the
>>> indr block architecture.
>>>
>>> Signed-off-by: wenxu <wenxu@...oud.cn>
>>> ---
>>> v3: subsys_initcall for init_flow_indr_rhashtable
>>> v4: no change
>>>
>> [...]
>>
>>
>>> diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
>>> index 00b9aab..66f89bc 100644
>>> --- a/include/net/flow_offload.h
>>> +++ b/include/net/flow_offload.h
>>> @@ -4,6 +4,7 @@
>>> #include <linux/kernel.h>
>>> #include <linux/list.h>
>>> #include <net/flow_dissector.h>
>>> +#include <linux/rhashtable.h>
>>>
>>> struct flow_match {
>>> 	struct flow_dissector	*dissector;
>>> @@ -366,4 +367,42 @@ static inline void flow_block_init(struct flow_block *flow_block)
>>> 	INIT_LIST_HEAD(&flow_block->cb_list);
>>> }
>>>
>>> +typedef int flow_indr_block_bind_cb_t(struct net_device *dev, void *cb_priv,
>>> +				      enum tc_setup_type type, void *type_data);
>>> +
>>> +struct flow_indr_block_cb {
>>> +	struct list_head list;
>>> +	void *cb_priv;
>>> +	flow_indr_block_bind_cb_t *cb;
>>> +	void *cb_ident;
>>> +};
>> I don't understand why are you pushing this struct out of the c file to
>> the header. Please don't.
>>
>>
>>> +
>>> +typedef void flow_indr_block_ing_cmd_t(struct net_device *dev,
>>> +				       struct flow_block *flow_block,
>>> +				       struct flow_indr_block_cb *indr_block_cb,
>>> +				       enum flow_block_command command);
>>> +
>>> +struct flow_indr_block_dev {
>>> +	struct rhash_head ht_node;
>>> +	struct net_device *dev;
>>> +	unsigned int refcnt;
>>> +	struct list_head cb_list;
>>> +	flow_indr_block_ing_cmd_t *ing_cmd_cb;
>>> +	struct flow_block *flow_block;
>> I don't understand why are you pushing this struct out of the c file to
>> the header. Please don't.
>
>the flow_indr_block_dev and indr_block_cb in the h file used for the function

You don't need it, same as before. Please don't expose this struct.


>
>tc_indr_block_ing_cmd in cls_api.c
>
>>> -static void tc_indr_block_ing_cmd(struct tc_indr_block_dev *indr_dev,
>>> -				  struct tc_indr_block_cb *indr_block_cb,
>>> +static void tc_indr_block_ing_cmd(struct net_device *dev,
>> I don't understand why you change struct tc_indr_block_dev * to
>> struct net_device * here. If you want to do that, please do that in a
>> separate patch, not it this one where only "the move" should happen.


Did you see the rest of my comments???



>>