[RFC,3/7] net/filter: Skip the disabled filter when delivering packets

If the filter is disabled, don't go through it.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
---
 include/net/filter.h | 5 +++++
 net/net.c            | 4 ++++
 2 files changed, 9 insertions(+)

On 01/22/2016 04:36 PM, zhanghailiang wrote:
> If the filter is disabled, don't go through it.
> 
> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
> ---
>  include/net/filter.h | 5 +++++
>  net/net.c            | 4 ++++
>  2 files changed, 9 insertions(+)
> 
> diff --git a/include/net/filter.h b/include/net/filter.h
> index 9ed5ec6..d797ee4 100644
> --- a/include/net/filter.h
> +++ b/include/net/filter.h
> @@ -74,6 +74,11 @@ ssize_t qemu_netfilter_pass_to_next(NetClientState *sender,
>                                      int iovcnt,
>                                      void *opaque);
>  
> +static inline bool qemu_need_skip_netfilter(NetFilterState *nf)
> +{
> +    return nf->enabled ? false : true;
> +}
> +
>  void netfilter_print_info(NetFilterState *nf, char *output_str, int size);
>  
>  #endif /* QEMU_NET_FILTER_H */
> diff --git a/net/net.c b/net/net.c
> index 87de7c0..ec43105 100644
> --- a/net/net.c
> +++ b/net/net.c
> @@ -581,6 +581,10 @@ static ssize_t filter_receive_iov(NetClientState *nc,
>      NetFilterState *nf = NULL;
>  
>      QTAILQ_FOREACH(nf, &nc->filters, next) {
> +        /* Don't go through filter if it is off */
> +        if (qemu_need_skip_netfilter(nf)) {
> +            continue;
> +        }
>          ret = qemu_netfilter_receive(nf, direction, sender, flags, iov,
>                                       iovcnt, sent_cb);
>          if (ret) {
> 

qemu_netfilter_pass_to_next() shoule also be updated.

Thanks
Wen Congyang

On 01/22/2016 05:32 PM, Wen Congyang wrote:
> On 01/22/2016 04:36 PM, zhanghailiang wrote:
>> If the filter is disabled, don't go through it.
>>
>> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
>> ---
>>  include/net/filter.h | 5 +++++
>>  net/net.c            | 4 ++++
>>  2 files changed, 9 insertions(+)
>>
>> diff --git a/include/net/filter.h b/include/net/filter.h
>> index 9ed5ec6..d797ee4 100644
>> --- a/include/net/filter.h
>> +++ b/include/net/filter.h
>> @@ -74,6 +74,11 @@ ssize_t qemu_netfilter_pass_to_next(NetClientState *sender,
>>                                      int iovcnt,
>>                                      void *opaque);
>>  
>> +static inline bool qemu_need_skip_netfilter(NetFilterState *nf)
>> +{
>> +    return nf->enabled ? false : true;
>> +}
>> +
>>  void netfilter_print_info(NetFilterState *nf, char *output_str, int size);
>>  
>>  #endif /* QEMU_NET_FILTER_H */
>> diff --git a/net/net.c b/net/net.c
>> index 87de7c0..ec43105 100644
>> --- a/net/net.c
>> +++ b/net/net.c
>> @@ -581,6 +581,10 @@ static ssize_t filter_receive_iov(NetClientState *nc,
>>      NetFilterState *nf = NULL;
>>  
>>      QTAILQ_FOREACH(nf, &nc->filters, next) {
>> +        /* Don't go through filter if it is off */
>> +        if (qemu_need_skip_netfilter(nf)) {
>> +            continue;
>> +        }
>>          ret = qemu_netfilter_receive(nf, direction, sender, flags, iov,
>>                                       iovcnt, sent_cb);
>>          if (ret) {
>>
> qemu_netfilter_pass_to_next() shoule also be updated.

Then let's better move it to qemu_netfiler_receive().

>
> Thanks
> Wen Congyang
>
>
>
>

On 2016/1/25 13:04, Jason Wang wrote:
>
>
> On 01/22/2016 05:32 PM, Wen Congyang wrote:
>> On 01/22/2016 04:36 PM, zhanghailiang wrote:
>>> If the filter is disabled, don't go through it.
>>>
>>> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
>>> ---
>>>   include/net/filter.h | 5 +++++
>>>   net/net.c            | 4 ++++
>>>   2 files changed, 9 insertions(+)
>>>
>>> diff --git a/include/net/filter.h b/include/net/filter.h
>>> index 9ed5ec6..d797ee4 100644
>>> --- a/include/net/filter.h
>>> +++ b/include/net/filter.h
>>> @@ -74,6 +74,11 @@ ssize_t qemu_netfilter_pass_to_next(NetClientState *sender,
>>>                                       int iovcnt,
>>>                                       void *opaque);
>>>
>>> +static inline bool qemu_need_skip_netfilter(NetFilterState *nf)
>>> +{
>>> +    return nf->enabled ? false : true;
>>> +}
>>> +
>>>   void netfilter_print_info(NetFilterState *nf, char *output_str, int size);
>>>
>>>   #endif /* QEMU_NET_FILTER_H */
>>> diff --git a/net/net.c b/net/net.c
>>> index 87de7c0..ec43105 100644
>>> --- a/net/net.c
>>> +++ b/net/net.c
>>> @@ -581,6 +581,10 @@ static ssize_t filter_receive_iov(NetClientState *nc,
>>>       NetFilterState *nf = NULL;
>>>
>>>       QTAILQ_FOREACH(nf, &nc->filters, next) {
>>> +        /* Don't go through filter if it is off */
>>> +        if (qemu_need_skip_netfilter(nf)) {
>>> +            continue;
>>> +        }
>>>           ret = qemu_netfilter_receive(nf, direction, sender, flags, iov,
>>>                                        iovcnt, sent_cb);
>>>           if (ret) {
>>>
>> qemu_netfilter_pass_to_next() shoule also be updated.
>
> Then let's better move it to qemu_netfiler_receive().
>

Good idea, i will fix it, thanks.

>>
>> Thanks
>> Wen Congyang
>>
>>
>>
>>
>
>
> .
>