From: Yonglong Li <liyonglong@chinatelecom.cn>
To: Geliang Tang <geliangtang@gmail.com>
Cc: mptcp@lists.linux.dev
Subject: Re: [MPTCP][PATCH v9 mptcp-next 0/6] mptcp: fix conflicts when using pm.add_signal in ADD_ADDR/echo and RM_ADDR process
Date: Mon, 19 Jul 2021 17:57:36 +0800 [thread overview]
Message-ID: <c340a979-1e87-b4c5-0955-b10890144fbe@chinatelecom.cn> (raw)
In-Reply-To: <CA+WQbwvUCNtoHRX-7xVxY1AAVirym2mN1N+bPUY0R0jD6hDpEA@mail.gmail.com>
Hi Geliang,
I tested v9 and don't get any issue last weekend and today.
I think v9 is ok.
On 2021/7/16 18:13, Geliang Tang wrote:
> Thanks, Yonglong,
>
> I'll do more tests for v9. And please test v9 on your computer too.
>
> Yonglong Li <liyonglong@chinatelecom.cn> 于2021年7月16日周五 下午5:36写道:
>>
>>
>> Hi Geliang,
>>
>> The v9 LGTM. Thank you for your help and efforts.
>>
>> On 2021/7/16 11:04, Geliang Tang wrote:
>>> From: Yonglong Li <liyonglong@chinatelecom.cn>
>>>
>>> fix issue: ADD_ADDR and RM_ADDR use pm.add_signal to mark event, so
>>> in some case pm.add_signal will be flush when ADD_ADDR/RM_ADDR in
>>> process.
>>>
>>> fix issue: if ADD_ADDR and ADD_ADDR-echo process at the same time,
>>> only one event can write pm.add_signal. so ADD_ADDR will process
>>> after add_timer timeout or ADD_ADDR-echo will not be process.
>>>
>>> Patch 1 fix ADD_ADDR and RM_ADDR maybe clear addr_signal each other.
>>>
>>> Patch 2 and 3 deal ADD_ADDR and ADD_ADDR-echo with separately to fix
>>> conflicts in using pm.addr_signal porcess.
>>>
>>> Patch 4 MPTCP_ADD_ADDR_IPV6 and MPTCP_ADD_ADDR_PORT is not necessary.
>>>
>>> v1->v2:
>>> - remove READ_ONCE under the pm spin lock.
>>>
>>> v2->v3:
>>> - Patch 2: mptcp_pm_should_add_addr => mptcp_pm_should_add_signal_addr
>>> - Patch 3: avoid read-modify-write of msk->pm.addr_signal and change
>>> mptcp_pm_add_addr_signal to return void.
>>>
>>> v3->v4:
>>> - Patch 1: use ~(BIT(MPTCP_ADD_ADDR_SIGNAL) | BIT(MPTCP_ADD_ADDR_ECHO))
>>> instead of BIT(MPTCP_RM_ADDR_SIGNAL)
>>> - Patch 3: simple the code; init flags; fix wrong goto logic code;
>>>
>>> v4->v5:
>>> - Patch 3: simple the code of 'mptcp_established_options_add_addr'
>>>
>>> v5->v6:
>>> - Patch2: fix fails of 'mptcp_join.sh -t'. In mptcp_pm_add_addr_send_ack
>>> without MPTCP_ADD_ADDR_SIGNAL check so pure ack can not be sent for
>>> ADD_ADDR. That cause ADD_ADDR can not be sent in time.
>>> - Patch3: refactor some code according Geliang's suggestions.
>>> - Patch4: modify commit comment
>>>
>>> v6->v7:
>>> - Patch1: use reverse xmas tree order for variables definition
>>> - Patch3: refactor some code according Geliang's suggestions.
>>> - add a Patch4: remove some double-check
>>>
>>> v7->v8:
>>> - Patch1,2: exchange patch1 and patch2
>>> - Patch3: refactor some code according Geliang's suggestions.
>>> - remove patch "remove some double check", Geliang think it's unnecessary
>>>
>>> v8->v9:
>>> - Keep mptcp_add_addr_len unchanged.
>>> - populate opts->local or opts->remote after the length check, don't
>>> populate both of them.
>>> - add back 'echo' and 'port' arguments of mptcp_pm_add_addr_signal().
>>> - add a new arguments drop_other_suboptions for
>>> mptcp_pm_add_addr_signal(), and do the drop_other_suboptions check in it.
>>> - drop other suboptions in mptcp_established_options_add_addr() after the
>>> length check.
>>> - split the drop_other_suboptions code into a new patch.
>>> - add a new selftest case.
>>>
>>> Yonglong Li (6):
>>> mptcp: move drop_other_suboptions check under pm lock
>>> mptcp: make MPTCP_ADD_ADDR_SIGNAL and MPTCP_ADD_ADDR_ECHO separate
>>> mptcp: fix ADD_ADDR and RM_ADDR maybe flush addr_signal each other
>>> mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal
>>> mptcp: remove MPTCP_ADD_ADDR_IPV6 and MPTCP_ADD_ADDR_PORT
>>> selftests: mptcp: add_addr and echo race test
>>>
>>> include/net/mptcp.h | 3 +-
>>> net/mptcp/options.c | 54 +++++++++---------
>>> net/mptcp/pm.c | 57 +++++++++++++------
>>> net/mptcp/pm_netlink.c | 10 ++--
>>> net/mptcp/protocol.h | 24 ++++----
>>> .../testing/selftests/net/mptcp/mptcp_join.sh | 15 +++++
>>> 6 files changed, 97 insertions(+), 66 deletions(-)
>>>
>>
>> --
>> Li YongLong
>
--
Li YongLong
next prev parent reply other threads:[~2021-07-19 9:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-16 3:04 [MPTCP][PATCH v9 mptcp-next 0/6] mptcp: fix conflicts when using pm.add_signal in ADD_ADDR/echo and RM_ADDR process Geliang Tang
2021-07-16 3:04 ` [MPTCP][PATCH v9 mptcp-next 1/6] mptcp: move drop_other_suboptions check under pm lock Geliang Tang
2021-07-16 3:04 ` [MPTCP][PATCH v9 mptcp-next 2/6] mptcp: make MPTCP_ADD_ADDR_SIGNAL and MPTCP_ADD_ADDR_ECHO separate Geliang Tang
2021-07-16 3:04 ` [MPTCP][PATCH v9 mptcp-next 3/6] mptcp: fix ADD_ADDR and RM_ADDR maybe flush addr_signal each other Geliang Tang
2021-07-16 3:04 ` [MPTCP][PATCH v9 mptcp-next 4/6] mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal Geliang Tang
2021-07-16 3:04 ` [MPTCP][PATCH v9 mptcp-next 5/6] mptcp: remove MPTCP_ADD_ADDR_IPV6 and MPTCP_ADD_ADDR_PORT Geliang Tang
2021-07-16 3:04 ` [MPTCP][PATCH v9 mptcp-next 6/6] selftests: mptcp: add_addr and echo race test Geliang Tang
2021-07-16 3:12 ` [MPTCP][PATCH v9 mptcp-next 0/6] mptcp: fix conflicts when using pm.add_signal in ADD_ADDR/echo and RM_ADDR process Geliang Tang
2021-07-16 9:35 ` Yonglong Li
2021-07-16 10:13 ` Geliang Tang
2021-07-19 9:57 ` Yonglong Li [this message]
2021-07-19 10:02 ` Geliang Tang
2021-07-22 9:21 ` Matthieu Baerts
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