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dpvs session synchronization #476

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dpvs session synchronization #476

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weiyanhua100
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@kldeng
make it possible to bind laddr to lcore by adding laddr_lcore_mapping
f394d1b 
option. In this mode, dest addr is needed in FDIR instead of dest addr and dest port mask.

NOTICE:
number of laddrs should be greater or equal to number of slave lcores.
Or, some slave lcores will have no laddr causing FNAT fowarding failed in
those slave lcores.

Co-authored-by: kldeng <kldeng05@gmail.com>
Co-authored-by: lixiaoxiao <lixiaoxiao@360.cn>
mscbg
mscbg reviewed Sep 11, 2019
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mscbg
mscbg reviewed Sep 11, 2019
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mscbg
mscbg reviewed Sep 12, 2019
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kldeng and others added 3 commits September 23, 2019 20:56
@kldeng
session_sync: Add session sync to decrease the connection break due t…
066bc17 
…o the DPVS node failure in the cluster.

1.there are two synchronization modes: full and incremental.
2.incremental synchronization is used for new session.
3.full synchronization is used for existing session.

Co-authored-by: lixiaoxiao lixiaoxiao@360.cn
Add identifiers for Synchronized sessions.
f73ea54
add readme for session sync.
a3130ed
@hulinfan
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hulinfan commented Sep 30, 2019 •
edited

Hi,
Have you ever tested the performance of dpvs while enabling sessions synchronization?
What's the PPS and CPS?
I doubt it harms performance a lot.

@ywc689 ywc689 added pr/to-confirm-needs consider whether the feature of pr is needed pr/needs-confirmed the feature in the pr is what we need，and list what cases should be checked in later stages pr/to-review-codes review codes line by line and check if problem exists. and removed pr/to-confirm-needs consider whether the feature of pr is needed labels Jul 16, 2020
@yfming
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yfming commented Feb 17, 2022 •
edited

你好，看了代码后有几个疑问：
1、需要同步session的机器运行ipvsadm --conn-sync命令？假如a执行了这个命令，这时候b和c同时收到了probe报文，都回应了reply怎么确定应该从c还是b同步呢？假如c同时收到了a和b的probe报文，那怎么能给两台都同步全量呢？
2、需要同步的机器都要执行一下ipvsadm --conn-sync才会做全量和增量同步吧？
3、同步后的conn为什么不能用lport添加fdir，必须要支持lip方式呢？
4、session建立之后为什么要等待（sync_session_elapse），然后才进行同步呢？

@ywc689 ywc689 removed the pr/to-review-codes review codes line by line and check if problem exists. label Feb 16, 2023
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@weiyanhua100 @hulinfan @yfming @August90dd @mscbg @ywc689 @kldeng