Re: [OE-core] [PATCH 2/2] connman: set service to conflict with systemd-networkd

["Yi Zhao" <yi.zhao@windriver.com>]

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On 12/1/20 5:02 AM, Jack Mitchell wrote:
> On 02/11/2020 09:20, Yi Zhao wrote:
>> Do not run systemd-networkd and connman simultaneously. These two
>> network managers may conflict with each other.
>>
>> Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
>> ---
>>   ...stop-systemd-networkd-when-using-con.patch | 29 +++++++++++++++++++
>>   .../connman/connman_1.38.bb                   |  1 +
>>   2 files changed, 30 insertions(+)
>>   create mode 100644 meta/recipes-connectivity/connman/connman/0001-connman.service-stop-systemd-networkd-when-using-con.patch
>>
>> diff --git a/meta/recipes-connectivity/connman/connman/0001-connman.service-stop-systemd-networkd-when-using-con.patch b/meta/recipes-connectivity/connman/connman/0001-connman.service-stop-systemd-networkd-when-using-con.patch
>> new file mode 100644
>> index 0000000000..dd012750a4
>> --- /dev/null
>> +++ b/meta/recipes-connectivity/connman/connman/0001-connman.service-stop-systemd-networkd-when-using-con.patch
>> @@ -0,0 +1,29 @@
>> +From 9fea099d0a3ece37d80ad70d32ebb8a93f8f3280 Mon Sep 17 00:00:00 2001
>> +From: Yi Zhao <yi.zhao@windriver.com>
>> +Date: Fri, 30 Oct 2020 13:48:45 +0800
>> +Subject: [PATCH] connman.service: stop systemd-networkd when using connman
>> +
>> +Stop systemd-networkd service when we use connman as network manager.
>> +
>> +Upstream-Status: Inappropriate [configuration]
>> +
>> +Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
>> +---
>> + src/connman.service.in | 1 +
>> + 1 file changed, 1 insertion(+)
>> +
>> +diff --git a/src/connman.service.in b/src/connman.service.in
>> +index 79e75d6..014eafe 100644
>> +--- a/src/connman.service.in
>> ++++ b/src/connman.service.in
>> +@@ -6,6 +6,7 @@ RequiresMountsFor=@localstatedir@/lib/connman
>> + After=dbus.service network-pre.target systemd-sysusers.service
>> + Before=network.target multi-user.target shutdown.target
>> + Wants=network.target
>> ++Conflicts=systemd-networkd.service systemd-networkd.socket
>> + Conflicts=systemd-resolved.service
>> +
>> + [Service]
>> +--
>> +2.17.1
>> +
>> diff --git a/meta/recipes-connectivity/connman/connman_1.38.bb b/meta/recipes-connectivity/connman/connman_1.38.bb
>> index 027c41e9af..45c2934dec 100644
>> --- a/meta/recipes-connectivity/connman/connman_1.38.bb
>> +++ b/meta/recipes-connectivity/connman/connman_1.38.bb
>> @@ -3,6 +3,7 @@ require connman.inc
>>   SRC_URI = "${KERNELORG_MIRROR}/linux/network/${BPN}/${BP}.tar.xz \
>>              file://0001-plugin.h-Change-visibility-to-default-for-debug-symb.patch \
>>              file://0001-connman.service-stop-systemd-resolved-when-we-use-co.patch \
>> +           file://0001-connman.service-stop-systemd-networkd-when-using-con.patch \
>>              file://connman \
>>              file://no-version-scripts.patch \
>>              "
>>
> Hi Yi,
>
> This breaks our usecase where we have been using connman and
> systemd-networkd in tandem for a long time. IMO this should be reverted
> as if the two applications are conflicting then the correct fix is that
> they should be configured so that they don't both try to configure the
> same interfaces. As systemd-networkd doesn't ship with any rules by
> default it shouldn't be doing anything to interfere?


Currently, A systemd-networkd configuration file 80-wired.network from 
systemd-conf package is also installed by default on HW BSPs. Comman is 
the default network-manager in Yocto. It will manage the wired interface 
automatically. But with this configuration file, the systemd-networkd 
will also try to manage the wired interface as connman does. They may 
conflict with each other.In addition to revert this patch, I think we 
should consider whether to install this configuration file by default. 
Maybe it’s better to install it as an example and users can enable it as 
needed.

Thanks,
Yi


>
> With this patch I can no-longer run both services as it's a hard
> conflict with no option to either revert locally, or bbappend this patch
> out.
>
> Regards,
> Jack.
>
> 
>

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