[OE-core] [PATCH 1/1] systemd-conf: configure wired network with dhcp

[Khem Raj]

On Mon, May 20, 2019 at 7:55 PM Kang Kai <Kai.Kang at windriver.com> wrote:
>
> On 2019/5/21 上午2:05, Khem Raj wrote:
> >
> >
> > On 5/20/19 2:46 AM, kai.kang at windriver.com wrote:
> >> From: Kai Kang <kai.kang at windriver.com>
> >>
> >> Add a configure file for systemd.networkd to configure wired network
> >> interfaces with dhcp. It works with common network interfaces such eth0
> >> and eno1.
> >>
> >> [YOCTO #13057]
> >>
> >> Signed-off-by: Kai Kang <kai.kang at windriver.com>
> >> ---
> >>   meta/recipes-core/systemd/systemd-conf/dhcp.network | 5 +++++
> >>   meta/recipes-core/systemd/systemd-conf_242.bb       | 3 +++
> >>   2 files changed, 8 insertions(+)
> >>   create mode 100644 meta/recipes-core/systemd/systemd-conf/dhcp.network
> >>
> >> diff --git a/meta/recipes-core/systemd/systemd-conf/dhcp.network
> >> b/meta/recipes-core/systemd/systemd-conf/dhcp.network
> >> new file mode 100644
> >> index 0000000000..81f36ebaa5
> >> --- /dev/null
> >> +++ b/meta/recipes-core/systemd/systemd-conf/dhcp.network
> >> @@ -0,0 +1,5 @@
> >> +[Match]
> >> +Name=en* eth*
> >> +
> >> +[Network]
> >> +DHCP=yes
> >> diff --git a/meta/recipes-core/systemd/systemd-conf_242.bb
> >> b/meta/recipes-core/systemd/systemd-conf_242.bb
> >> index 96beea53a7..094f03e195 100644
> >> --- a/meta/recipes-core/systemd/systemd-conf_242.bb
> >> +++ b/meta/recipes-core/systemd/systemd-conf_242.bb
> >> @@ -10,12 +10,14 @@ SRC_URI = "\
> >>       file://logind.conf \
> >>       file://system.conf \
> >>       file://system.conf-qemuall \
> >> +    file://dhcp.network \
> >>   "
> >>     do_install() {
> >>       install -D -m0644 ${WORKDIR}/journald.conf
> >> ${D}${systemd_unitdir}/journald.conf.d/00-${PN}.conf
> >>       install -D -m0644 ${WORKDIR}/logind.conf
> >> ${D}${systemd_unitdir}/logind.conf.d/00-${PN}.conf
> >>       install -D -m0644 ${WORKDIR}/system.conf
> >> ${D}${systemd_unitdir}/system.conf.d/00-${PN}.conf
> >> +    install -D -m0644 ${WORKDIR}/dhcp.network
> >> ${D}${systemd_unitdir}/network/80-dhcp.network
> >>   }
> >>     # Based on change from YP bug 8141, OE commit
> >> 5196d7bacaef1076c361adaa2867be31759c1b52
> >> @@ -29,4 +31,5 @@ FILES_${PN} = "\
> >>       ${systemd_unitdir}/journald.conf.d/ \
> >>       ${systemd_unitdir}/logind.conf.d/ \
> >>       ${systemd_unitdir}/system.conf.d/ \
> >> +    ${systemd_unitdir}/network/ \
> >>   "
> >>
> >
> > Please look into
> >
> > https://github.com/YoeDistro/meta-yoe/tree/master/recipes-core/systemd
> >
> > this also means we need to enable networkd and resolved for this to work
> >
>
> I checked the repo you post,
>
> 1) package config 'networkd' and 'resolved' have been involved in
> default package config in systemd_242.bb
>
> 2) I suspect wireless.network is not necessary. Unlike wired network, we
> can't predict the ap name and connect it automatically.
>
> 3) the configure file doesn't work with qemu tap mode. I'll update with it.
>

right your patch failed to set IP for qemux86 on my system.

> 4) Do the configure of section [DHCP] in wired.network necessary?
>
> [DHCP]
> RouteMetric=10
> ClientIdentifier=mac
>

yes they work totally fine and also makes sure that IP is not changing
all the time
for phys which happens for so many boards where you get new IP every boot



>
> Thanks.
>
>
> --
> Kai Kang
>