Commit Graph

1556 Commits

Author SHA1 Message Date
Martin Stein
e139c52262 nic_router: fix verbose_packets attribute
The default value of each <domain> is the <config> value. However, if
a <domain> local value is set, the <config> value doesn't affect this
value at all.

Fixes #2874
2018-06-29 10:44:58 +02:00
Martin Stein
0b8520a208 nic_router: act as ICMP Echo server
The ICMP-Echo-server functionality of the router has the following
configuration attributes (default values shown):

! <config icmp_echo_server="yes">
!    <domain icmp_echo_server="yes" ... />
! </config>

The icmp_echo_server attribute configures whether the router answers ICMP Echo
requests that address the router. The <config> value affects all domains
without a <domain> local value.

Issue #2874
2018-06-29 10:44:58 +02:00
Martin Stein
055862c0eb nic_router: cancel remote ARP on new IP config
When a domain is updated to a new component config, the two criteria for
keeping an ARP waiting state of a remote domain are whether the remote
domain still exists and whether its IP config is still the same. This
means that a domain must also dissolve all of its remote ARP waiting
states if its IP config changes (without an update of the component
config). This wasn't the case until now.

Issue #2840
2018-06-29 10:44:58 +02:00
Martin Stein
9b619e95b2 nic_router: fix log when updating ARP waiters
Give the correct reason why an ARP waiter was dismissed.

Issue #2840
2018-06-29 10:44:58 +02:00
Norman Feske
a9adc67421 os: improve robustness of init_loop test 2018-06-29 10:44:57 +02:00
Emery Hemingway
96112ec66d test/fs_report: delay Report/ROM file removal
Ref #2839
2018-06-29 10:44:56 +02:00
Christian Helmuth
3161daacd7 platform_drv: use Expanding_reporter for pci report
If the number of PCI buses grows (seen with VMware player) the default
report size is exhausted quickly.
2018-06-29 10:44:56 +02:00
Emery Hemingway
9d8bf1373e Chroot: remove merge policies
The chroot server was conceived to automatically place File_system
sessions into segregated root directories by converting session labels
to paths. If multiple children needed to be grouped under the same path,
a 'merge' policy would truncate the session label before path conversion.
Now that init can rewrite session labels and thus reproduce truncation,
the chroot merge feature is redundant and can be removed.

Fix #2846
2018-06-29 10:44:54 +02:00
Emery Hemingway
366913c146 ram_fs: unmark modification from nodes that have been synced
Removed the modified mark from handles that have been written to when
they are synced, otherwise a notification would be sent again when the
handle is closed.

Ref #2839
2018-06-29 10:44:54 +02:00
Martin Stein
90fcba79c6 nic_router: non-critical logs only when verbose
* Do not log events that are not critical (deadly) to the NIC router if not
  configured to be verbose,
* Print almost all log lines with a prefix of the domain name they are
  related to,
* And, do not use Genode::error and Genode::warning as they make it hard to
  read the log with the domain name prefixes.

Fixes #2840
2018-06-29 10:44:53 +02:00
Martin Stein
49a3a0e0d0 nic_router: multiple uplinks
Introduce the uplink tag:

! <config>
!    <uplink label="wifi"  domain="uplink">
!    <uplink label="wired" domain="wired_bridge">
!    <uplink               domain="wired_bridge">
! <config/>

For each uplink tag, the NIC router requests a NIC session with the
corresponding label or an empty label if there is no label attribute.
These NIC sessions get attached to the domain that is set in their
uplink tag as soon as the domain appears. This means their lifetime is
not bound to the domain. Uplink NIC sessions can be safely moved from
one domain to another without being closed by reconfiguring the
corresponding domain attribute.

Attention: This may render previously valid NIC router configurations
useless. A domain named "uplink" doesn't automatically request a NIC
session anymore. To fix these configurations, just add

! <uplink domain="uplink"/>

or

! <uplink label="[LABEL]" domain="uplink"/>

as direct subtag of the <config> tag.

Issue #2840
2018-06-29 10:44:53 +02:00
Martin Stein
d4f08b5a71 nic_router: get rid of the term "legacy"
The term was used for the old configuration during the handling of a new
configuration but in other places it was already called old_config.

Issue #2840
2018-06-29 10:40:14 +02:00
Martin Stein
ff7bc0ac6c nic_router: optimize handling of invalid domains
Dissolve and destroy the invalid domain first before deinitializing all
domains for the next round. This way, the deinitialization is not done twice
for the invalid domain.

Issue #2840
2018-06-29 10:40:14 +02:00
Martin Stein
27155a507f nic_router: fix DHCP-server deinitialization
Due to a bug in the deinitialization of the DHCP server of a domain (the
reference to the destroyed object was not cleared), the NIC router could
end up in a page fault caused by a double-free at the heap. This also fixes
the previously missing dissolving of the "DNS-server-from" relation to a
remote domain.

Issue #2840
2018-06-29 10:40:14 +02:00
Martin Stein
14357b0b44 nic_router_flood.run: test DoS against router
Currently has three clients that continuously create new UDP/TCP/ICMP
connections through the NIC router with NAT to the outer world and they
get never closed.  A fourth client does normal ping through the same
domain to the outer world that must succeed even after the RAM quota of
the other session at the router is exhausted. The test is restricted to
Qemu to not being at risk to flood real networks.

Issue #2857
2018-06-29 10:40:13 +02:00
Christian Helmuth
246bacd9da depot: update recipe hashes 2018-06-13 13:52:12 +02:00
Norman Feske
78d83ebda8 utf8.run: increase timeout, needed for sel4 2018-06-13 13:52:11 +02:00
Emery Hemingway
8f1eecdc29 fs_rom: read dataspace during session request
Fix #2863
2018-06-13 13:52:11 +02:00
Norman Feske
6491ba0589 init: avoid too eager child restart
This patch weakens the aggressive restart of a child with incomplete
environment sessions. The restart check is performed each time
the init configuration changes. In sculpt, this is not a rare special
case anymore but a frequent case when using the depot_rom as provider
for environment ROM sessions. In particular when starting a chain of
inter-depending children, the sculpt-manager quickly generates a
sequence of configurations with successively added start nodes.
2018-06-13 13:52:10 +02:00
Norman Feske
648539a513 init: don't report abandoned children
This is a fixup of "base: fix destruction of async env sessions".
2018-06-13 13:50:35 +02:00
Alexander Boettcher
ef482513c4 base: reset unfinished xml nodes in xml_generator
Fixes #2855
2018-06-13 13:50:35 +02:00
Norman Feske
d4c22654e1 init test: reduce RAM demand of app/dummy
The addition of the 'Cap_consumer' feature to app/dummy increased the
static RAM demand of the component to a point where 1 MiB no longer
suffices on sel4 (on this kernel, the base library uses a larger amount
of statically allocated data compared to the others). The tweaks enable
init.run and init_loop.run to work on sel4 on x86-64.
2018-06-12 12:11:51 +02:00
Christian Prochaska
d1524ba0b8 usb_block_drv: don't select alternate interface setting
Selecting an alternate interface setting, even if it is the same as the
current one, apparently makes the INQUIRY command fail with USB devices
like 'SanDisk Ultra Fit' (0781:5583) and 'Corsair Flash Voyager'
(1b1c:1a03) when the USB block driver is restarted.

Fixes #2860
2018-06-12 12:11:51 +02:00
Norman Feske
37be984d34 fs_rom: workaround for possible livelock
Thanks to Alexander Boettcher for investigating!
2018-06-12 12:11:50 +02:00
Martin Stein
bf055e2cb4 nic_router: fix uncaught interface RAM exhaustion
* Catch Quota_guard exceptions wherever we do 'new (_alloc)' in Interface
  and in case drop the packet that caused the exception
* Modify Interface::handle_config_2 to not use the guarded allocator of the
  NIC session quota as we cannot handle a RAM exhaustion well at this point
  in time. Instead use a Constructible member in Interface so that a needed
  RAM adds up to the calculation in the create_session implementation where
  an exhaustion is handled via a service denial.

Issue #2857
2018-06-12 12:11:50 +02:00
Martin Stein
97ea513122 nic_router: fix pure virtual call in ~Interface()
The interface destructor called pure virtual methods at least when
cancelling ARP- waiting states. The implementations were made by the
deriving classes Session_component respectively Uplink. This led to an
abort of the NIC router as the destruction of the derived class was
already done. A similar problem already occured in the past during the
construction of Interface and was back then solved by introducing a
separate init() method. This commit, however, solved the problem by
making Interface a member of the other classes. Therefore, the init()
method could be removed again. Furthermore, the interface polica could be
moved from Session_component_base to Session_component. The commit also
had to generalize the way the link state of an interface is determined.

Fixes #2856
2018-06-12 12:11:49 +02:00
Norman Feske
b96f0fa2df init: defer immediate restart of abandoned child
While a child is abandoned, we must limit the start of anothers with
the same name. Otherwise - of the child has startup problems - a number
of abandoned children with the same name may queue up. This becomes a
problem whenever the child destruction depends on an asynchronous
service that provides an env session for the children. If the service is
unable to keep up with the session requests (both create and close),
the queue of abandoned children becomes unbounded. Limiting the child
creation rate to one abandoned child per name mitigates this problem.
2018-06-12 12:11:47 +02:00
Norman Feske
6ab259d642 init: update state report on new/killed children
This patch reduces the latency of state reports when children are
removed or added, thereby, accellerating the feedback loop between a
management component and init during the staged startup or removal of
inter-dependent components.
2018-06-12 12:11:47 +02:00
Norman Feske
7088e4faaa os: add init_loop test
This test monitors the RAM quota of a dynamic init and a server hosted
within the dynamic init in the presence of a repeatedly created and
destructed client.
2018-06-12 12:11:46 +02:00
Martin Stein
4630c4b9ff nic_router: fix domain invalidation during init
Previously we were doing the initialization once over all domains,
remembered which of them became invalid and destroyed those afterwards.
This isn't sufficient. As soon as one domain becomes invalid we have to
dissolve/destroy this one, deinitialize all other domains again (as they
could contain references to the invalid domain) and retry to initialize
them from the beginning. We proceed with this until we have one run
without a domain becoming invalid. Then we can be sure that the last
initialization run did not create references to any invalid domain.

Issue #2840
2018-06-12 12:11:45 +02:00
Martin Stein
410652d42a nic_router: invalidate domains with same name
If two domains have the same name, invalidate (dissolve, destroy) them both.

Issue #2840
2018-06-12 12:11:45 +02:00
Martin Stein
8004d8757f nic_router: generic Avl_string_tree
The generic helper Avl_string_tree of the NIC router is currently only
used for finding domains via their names, but in the future it can be
used for finding uplinks by their labels also. Additionally, it enables
us to throw an exception when inserting two elements with the same
identifier.

Issue #2840
2018-06-12 12:11:44 +02:00
Martin Stein
bf1428be18 nic_router: simplify routing rule classes
* Get rid of the base classes Rule and Leaf_rule,
* Make log output about initiated or invalid routing rules conform to the rest
  of the router log, and
* Ensure that each type of routing rule when being invalid invalidates its
  whole domain.

Issue #2840
2018-06-12 12:11:44 +02:00
Martin Stein
1330c27ac6 ping.run: mark as "not supported" on Linux & FOC
On Linux, we have a tap device as NIC back end but there is no one to
ping to in the subnet of the tap device. On FOC, the tests seem to trigger
a bug in the destruction of components with parent.exit(X); .

Fixes #2848
2018-06-12 12:11:44 +02:00
Norman Feske
950b270e74 init: support dynamic cap-quota adjustment
This patch makes init's dynamic quota balancing mechanism available for
capability quotas.

Fixes #2852
2018-06-12 12:11:42 +02:00
Norman Feske
d2bd8f70f6 input_filter: fix condition for delayed press
The condition was too rigid. In the case where no motion occurred in
between the press and release events of the magic button, the delayed
press event would not be delivered. This - in turn - confused other
components (like nitpicker) down the input chain.
2018-06-12 12:11:41 +02:00
Alexander Boettcher
5ca30b0318 platform_drv: disable PCI DMA class specific
for such classes where it should be safe and where we have seen issues.
Disabling in general bus master DMA causes on some machines hard hangs, e.g.
because the USB handover protocol was violated.

Fixes #2835
2018-06-12 12:11:40 +02:00
Norman Feske
7791937e84 init: reduce report latency for resource requests
In contrast to most information of init's state reports, which can be
monitored at a relatively low rate (like 2 seconds in Sculpt's runtime),
resource requests call for an immediate response by the consumer of the
report. Otherwise the requesting child stays unnecessarily blocked until
the next rate-limited state report is due. This patch adds a fast lane
for such low-latency state updates to init.
2018-06-12 12:11:38 +02:00
Alexander Boettcher
70028f8445 nova: export kernel messages via memory
Fixes #2207
2018-06-12 12:11:37 +02:00
Christian Helmuth
bd86efe5fe depot: update recipe hashes 2018-05-31 14:02:21 +02:00
Josef Söntgen
9760210c77 fs_rom: revert notification changes 2018-05-31 13:51:23 +02:00
Martin Stein
a3905fcf87 nic_router: do not leak packets on link down/up
Do not send nor buffer packets at interfaces with link state "down". This
prevents that packets that were routed to one network (allowed to see them),
due to a sudden link down/up, are leaked to another network that is not
allowed to see them.
2018-05-31 12:28:15 +02:00
Martin Stein
1306892fbf nic_router: fix interface update on missing domain
When updating an interface in the NIC router to a new configuration and
the domain name of the interface has not changed but the domain
disappeared, the NIC router did not detach from the old domain correctly
which led to broken remnants of interface state objects (like connection
states).

Adapt the nic_router_uplinks run script to work with the fix.
2018-05-31 12:28:15 +02:00
Christian Helmuth
e2559a822b server/fs_report: don't truncate file initially
fs_report truncated the report file on construction of the report
session to mimic an "empty report". This prevented existing use cases
where the initial state was already written to the file system by other
means.

I doubt that use cases exist where the inital empty-report mimic is
needed and (if I'm wrong) there is still the race of the consumer
reading the file just before the report session is constructed.
Reporters that want to enforce an empty initial report should send it
explicitly.
2018-05-31 12:28:15 +02:00
Emery Hemingway
1af6bd1454 Fs_rom: send signals on file removal
Clients may wish to act on missing files. In any case the fs_rom
needs to reopen a watch handle when a file is deleted, and this
sort of change to the internal state machine is propelled by
client RPC requests.

Fix #2839
2018-05-31 12:28:12 +02:00
Norman Feske
87be50c542 os: add Expanding_reporter::generate(Xml_node)
This method allows for the verbatim reporting of an existing XML node.
2018-05-30 13:36:40 +02:00
Norman Feske
fc6e3c6b09 nitpicker: report boot-time motion activity 2018-05-30 13:36:40 +02:00
Norman Feske
b541379037 nitpicker: option to report display information
The new 'displays' report contains information about the used
framebuffer backend. It is issued when nitpicker has successfully passed
all initialization, in particular the connection to the framebuffer
driver. Hence, it can be taken as an indicator of whether the framebuffer
is available or not (e.g., caused by a faulty driver).
2018-05-30 13:36:40 +02:00
Martin Stein
22a69efafa nic_router: report DNS server 2018-05-30 13:36:40 +02:00
Martin Stein
3cac7e878d nic_router: invalid rules render domain invalid 2018-05-30 13:36:39 +02:00
Martin Stein
0592ac56c9 nic_router: handle invalid DHCP server 2018-05-30 13:36:39 +02:00
Martin Stein
49dc2b264f nic_router: point to point IP config 2018-05-30 13:36:39 +02:00
Martin Stein
44d97986a2 nic_router: attribute report.config_triggers 2018-05-30 13:36:39 +02:00
Martin Stein
c32c584f65 nic_router: fix uncaught exception on re-configure 2018-05-30 13:36:38 +02:00
Martin Stein
4802d22527 nic_router: reset uplink IP on link state change 2018-05-30 13:36:38 +02:00
Martin Stein
fe21ab48e0 nic_router: fix link-state for uplink interface 2018-05-30 13:36:37 +02:00
Martin Stein
19816bcd31 nic_router: when freeing a link log it beforehand
So, it can be located more easily when something goes wrong while
freeing a link.

Fixes #2815
2018-05-30 13:36:36 +02:00
Martin Stein
734d174f33 net: get rid of unused mac_from_string method
Issue #2815
2018-05-30 13:36:36 +02:00
Martin Stein
cea22866a8 config.xsd: adapt Boolean type to ascii_to(bool)
Harmonize the set of allowed values with the implementation of ascii_to for
bool.

Issue #2815
2018-05-30 13:36:35 +02:00
Martin Stein
ba348b73e2 nic_router: re-use dynamic IPv4 config if possible
When re-configuring the NIC router, determine for each domain if at least one
interface stays with the domain. If a domain fullfills this and has a
dynamic IP config (received via a DHCP client), keep the IP config.

To achieve this, the following changes have been made to the existing NIC
router code:

* Split-up Interface::handle_config into three steps:

  1) Determine for each interface if its domain can keep its IP config or
     or if it has to mark it invalid. This must be done before (re-)attaching
     any interface because during "attach" several decisions are made based on
     the validity of the IP config of corresponding the domain.
     (E.g. whether to participate in sending DHCP DISCOVERs {IP config
     invalid} or whether to participate in sending pending ARP REQUESTs
     {IP config valid} ).

  2) Detach, attach, or re-attach each interface according to the
     configuration. This must be done before re-considering the temporary
     state objects of each interface because the latter might have effects
     on the interfaces of remote domains which must then be in place already.

  3) Re-consider temporary state objects of each interface. (E.g. transport
     layer connection states)

* Re-work IP-config setter in a way that it works as follows:

  1) If the old IP config is valid, let all local interfaces as well as remote
     interfaces that depend on the IP config of the domain detach from the old
     IP config.

  2) Overwrite with new IP config

  3) If the new IP config is valid, let all local interfaces as well as remote
     interfaces that depend on the IP config of the domain attach to the new
     IP config.

Issue #2815
2018-05-30 13:36:34 +02:00
Martin Stein
ed69c11b01 nic_router: label attribute for uplink domain
The new attribute config.domain.label has effect only at the uplink
domain-tag. It determines which label the NIC router shall use when
requesting the NIC session for the uplink domain. If value of this
attribute changes at the uplink domain-tag, the NIC router closes and
re-requests the NIC session of the uplink with the new label.

Issue #2815
2018-05-30 13:36:34 +02:00
Martin Stein
1cfcab536c nic_router: Ipv4_config::print method
Issue #2815
2018-05-30 13:36:34 +02:00
Martin Stein
6de79ad703 ping_nic_router.run: add nic_bridge behind router
This tests the case that behind a NIC router domain there are not only
directly connected clients of the subnet but also Layer 2 indirections like
a switch or a bridge which might be interesting for example for testing the
NIC routers DHCP server implementation.

Fixes #2837
2018-05-30 13:36:33 +02:00
Martin Stein
0996954abb ping tests: fix for linux and hw + arm
Some platforms need more caps in some components and more time to finish the
test.

Issue #2837
2018-05-30 13:36:33 +02:00
Martin Stein
75ff599a91 ping: shorter retry timeouts in DHCP client
Set DHCP-DISCOVER retry timeout and DHCP-REQUEST retry timeout from 10
seconds to 2 seconds. This prevents problems with tests where the NIC
driver comes up slowly and the first packets of the DHCP client get
dropped.

Issue #2837
2018-05-30 13:36:33 +02:00
Martin Stein
0d5ed994e2 nic_router: fix dst and client MAC in DHCP replies
The Ethernet destination MAC address of a DHCP reply is not the same as the
DHCP client MAC address. The DHCP server of the NIC router did not take care
of this by now.

Issue #2837
2018-05-30 13:36:33 +02:00
Martin Stein
cee0c86c3c nic_bridge: fix reading of 'mac' attribute
Read as full MAC address and not as decimal uint8_t.

Issue #2837
2018-05-30 13:36:32 +02:00
Martin Stein
342bdaf4a2 net: generic ascii_to for Netaddress template
Issue #2837
2018-05-30 13:36:32 +02:00
Christian Prochaska
230ed1de37 usb_block_drv: make device reset optional
Fixes #2836
2018-05-30 13:36:31 +02:00
Alexander Boettcher
0ef7e58ef9 platform_drv.inc: support acpi_drv and acpica
Issue #2816
2018-05-30 13:36:31 +02:00
Norman Feske
7b6b3a4535 base: fix destruction of async env sessions
When an environment session is provided by a async service such as a
sibling component, the session metadata must be preserved until end of
the lifetime of the session at the server has been acknowledged by the
server. Since the session meta data of env sessions are always part of
the 'Child' object, the destruction of this object must be deferred
until this point.
2018-05-30 13:36:30 +02:00
Emery Hemingway
6d5393dd31 Simplify fs_rom internals
Merge the 'Packet_handle' into the 'Rom_root' and use an Id_space to
match File_system handles to session objects rather than a list. This
avoids the need to override 'Root_component::_destroy_session'.

Fix #2833
2018-05-30 13:36:29 +02:00
Norman Feske
0c26f33819 init: keep running even when RAM is exhausted
When exhausted of RAM quota while starting children, init used to throw
an uncaught 'Out_of_ram' exception as this condition was considered
fatal. However, this behavior is undesired when init is used in a highly
dynamic yet long-running fashion like sculpt's runtime subsystem. This
change keeps init running despite the error condition, giving the user
the chance to relieve the resource pressure.
2018-05-30 13:36:28 +02:00
Alexander Boettcher
e6d20aba93 base: support to attach RAM dataspaces readonly
Fixes #1633
2018-05-30 13:36:27 +02:00
Christian Helmuth
bba5a61ef9 Don't run ping test on unsupported platforms 2018-05-30 13:36:24 +02:00
Norman Feske
d3626bd84f nitpicker: fix transparency artifacts
The 'View_stack::draw_rec' method limited the redraw to parts of the
view that were explicitly marked as dirty. This does not produce the
desired result when stacking multiple transparent views. Here, the
background views must be drawn regardless of whether they are marked as
dirty or not.
2018-05-30 13:36:23 +02:00
Christian Prochaska
c5f1ac615c Usb::Packet_handler: avoid completion handler recursion
Fixes #2828
2018-05-30 13:36:20 +02:00
Christian Prochaska
c6e4f5914e usb_block_drv: release packet after device reset
Fixes #2827
2018-05-30 13:36:20 +02:00
Christian Prochaska
68ec33b0d3 usb_block_drv: use 10-byte SCSI commands by default
Fixes #2826
2018-05-30 13:36:20 +02:00
Christian Prochaska
5ac56be748 usb_block_drv: set inquiry response length to 36 bytes
Fixes #2825
2018-05-30 13:36:20 +02:00
Christian Prochaska
cecd461f38 usb_block_drv: look up endpoints at runtime
Fixes #2824
2018-05-30 13:36:19 +02:00
Christian Prochaska
106a5f1d4d usb_block_drv: calculate block count correctly
Fixes #2823
2018-05-30 13:36:19 +02:00
Martin Stein
3d480ec947 nic_router: fix config update of ICMP links
Previously, the update of ICMP links on a new router configuration lead to an
uncaught exception.

Issue #2795
2018-05-30 13:36:19 +02:00
Alexander Boettcher
501d82b99f platform_drv: skip assign device if iommu missing
Avoid red messages in the log on machines with no IOMMU, which recurring
confuse people.

Issue #2801
2018-05-30 13:36:18 +02:00
Christian Helmuth
8f102264d3 server/fs_report: open/close file for each write
The file may also be changed by other components, so a open-close cycle
for write() is more robust. For example, Vim removes the original file
and recreates with the new content.
2018-05-30 13:36:17 +02:00
Norman Feske
7d55adf01c nit_fb: defer mode change to client response
The '_active_mode' must not be changed at any time except when the
client asks for the 'Framebuffer::mode'. Otherwise, the dimensions of
dataspace used by the client is not always consistent with the mode
information as gathered by the client.
2018-05-30 13:36:15 +02:00
Christian Helmuth
cb3556877d pointer: show default pointer on empty shape report 2018-05-30 13:36:15 +02:00
Emery Hemingway
29c08d4751 Fix types for VFS error printing
Ref #2793
2018-05-30 13:36:14 +02:00
Christian Prochaska
2b75445ac1 usb_block_drv: keep driver instance between sessions
Fixes #2813
2018-05-30 13:36:13 +02:00
Martin Stein
505d30cc42 Update ping tests
On real hardware, the tests expect an IPv4 subnet such that UDP requests
to 10.0.0.2 port 12345 get answered with an ICMP destination port unreachable.

Issue #2775

support USB NIC

Issue #2788

Set DHCP discover timeout to 1 second because, for some reason, the first
DHCP discover attempt of the NIC router on the PandaBoard times out with the
nightly test infrastructure.

Issue #2788

Adaption to mac-address allocation changes
2018-05-30 13:36:13 +02:00
Martin Stein
2d229a2b72 ping: support UDP
Ping via specific UDP port instead of ICMP Echo with the two new configuration
attributes 'protocol' and 'dst_port'.

Issue #2775
2018-05-30 13:36:12 +02:00
Martin Stein
d93fda594a ping: dynamic IP configuration
Use DHCP to obtain and maintain an IP configuration if no static
configuration is given.

Issue #2775
2018-05-30 13:36:12 +02:00
Martin Stein
ce57319e4b nic_router: bind uplink session lifetime to domain
Normally, the NIC sessions are independent from the domain tags.
However, by now the uplink session, in contrast to the sessions of the
other domains, is still not a server but a client. This means that only
the NIC router itself can decide when to open and close uplink sessions
and how many. Thus, with this commit, we break with the pattern that
session lifetime is independent from domains by letting the NIC router
create the uplink session when the uplink domain appears and close the
session when the domain disappears.

Fixes #2795
2018-05-30 13:36:12 +02:00
Martin Stein
7085640f05 nic_router: remove 'mac_first' attribute
Since the router MAC is allocated like the donwlink MACs it can't happen
anymore that these MACs clash, for instance due to nested routers. Thus,
the range of the MAC allocators of nested routers must not be exclusive
anymore which deprecates the 'mac_first' configuration attribute.

Issue #2795
2018-05-30 13:36:12 +02:00
Martin Stein
e83f095fd2 nic_router: downlinks use own router MAC address
Allocate a virtual MAC address at runtime that is used as router
Ethernet-identity for all downlink domains. This makes the downlink
domains independent from the uplink session.

Issue #2795
2018-05-30 13:36:11 +02:00
Martin Stein
41dbad13e4 nic_router/nic_bridge: re-work Mac_allocator
The old MAC allocator had several drawbacks:

* the address base was a public static that could and must have been written
  directly from outside the class
* the in-use-flag array was based on unsigned values consuming 4 bytes each
  for only one bit of information
* it was a public header that we actually don't want to expose to all
  components but only to the few networking components
* it used the not-so-safe bit notation for integer members of GCC

The new version fixes all these drawbacks.

Issue #2795
2018-05-30 13:36:11 +02:00
Martin Stein
980f3e9c5c net: use Size_guard for packet-data accessors
Instead of handing over the maximum available size to the packet data
accessors, hand over a size guard that keeps track of the packets
boundaries.

This commit also moves the size-guard utilitiy header of Ping and NIC
Router to the include/net directory making it a part of the net library.
It applies the new approach to all net-lib users in the basic repositories.

Ping looses its configurability regarding the ICMP data size as this would
require an additional method in the size guard which would be used only by
Ping.

The size guard was also re-worked to fit the fact that a packet can
bring a tail as well as a header (Ethernet).

Issue #2788
2018-05-30 13:36:11 +02:00
Josef Söntgen
7f285bb074 part_blk: add reporting of expandable GPT entries
Issue #2803.
2018-05-30 13:36:10 +02:00
Josef Söntgen
45743ce884 part_blk: probe whole disk if no valid MBR found
Report the whole disk as partition 0 and probe file system. The
partitions type is set to 'disk'.

Issue #2803.
2018-05-30 13:36:10 +02:00
Josef Söntgen
90360674ed part_blk: report block size 2018-05-30 13:36:10 +02:00