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If we boot a machine before external (network) dependencies are properly
configured, it will have tried once to download configuration, and
possibly failed due to that configuration not being present.
This change introduces a periodic requery of network resources. After a
timeout, petitboot will either re-acquire its DHCP lease (causing any
downloads to be re-processed, possibly with different parameters from
the new lease), or re-download a statically defined URL.
This timeout defaults to five minutes (similar to pxelinux), and is
configurable by DHCP option 211, "reboot time".
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
[added test stub]
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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If pb-discover is started before udev has settled there is a race
between Petitboot configuring interfaces and udev renaming them. If an
interface is set "up" the name change will fail and interfaces can be
inconsistently named, eg:
Device: (*) eth0 [0c:c4:7a:f4:1c:50, link up]
( ) enP1p9s0f1 [0c:c4:7a:f4:1c:51, link down]
( ) enP1p9s0f2 [0c:c4:7a:f4:1c:52, link down]
( ) enP1p9s0f3 [0c:c4:7a:f4:1c:53, link down]
Add "net" devices to the udev filter and wait for them to be announced
by udev before configuring them.
udev_enumerate_add_match_is_initialized() ensures that by the time an
interface appears via udev its name will be consistent.
This also swaps the network and udev init order, but since interfaces
now will not be configured until after udev is ready this should not
have a user-visible effect.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
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The SYSAPPEND/IPAPPEND option 2 in PXE configs requires
the MAC address of the booting interface to be appended
to the boot options. Previously we formatted this as
"BOOTIF=01:02:03:04:05:06",
but syslinux/pxelinux implementation use this format:
"BOOTIF=01-01-02-03-04-05-06",
where the leading '01' represents the hardware type.
The relevant part of the pxelinux doc is at:
http://www.syslinux.org/wiki/index.php/SYSLINUX#SYSAPPEND_bitmask
Signed-off-by: Samuel Mendoza-Jonas <sam.mj@au1.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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We want the network code's network interfaces to (potentially) persist
remove events. For example, discover devices may be removed by a user
event (this happens during a udhcpc deconfig). In this case, we want the
boot options to be removed, but the struct interface needs to stay
present.
This change adds network_(un)_register_device functions, to allow the
device handler to detach from and attach to interfaces.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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We'd like to correlate incoming network boot options with a device, so
register the interface with the device hander.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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