Commit graph

838 commits

Author SHA1 Message Date
Matthias Brugger
ea707dc0aa net: Use NDRNG device in srand_mac()
When calling srand_mac we use a weak seed dependent on the
mac address. If present, use a RNG device instead to incerase entropy.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Torsten Duwe <duwe@suse.de>
2021-01-19 09:15:02 -05:00
Jorge Ramirez-Ortiz
c1ab738145 net: eth_legacy - fix build CMD_PCAP
Fix typo which would cause a build error.

Fixes: 3eaac6307d ("net: introduce packet capture support")

Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
2021-01-19 09:15:02 -05:00
Harm Berntsen
beb61e13b8 net: tftp: Fix incorrect tftp_next_ack on no OACK
When the tftp server did not send any OACK, the tftp_next_ack variable
was not set to the correct value . As the server was transmitting
blocks we generated a lot of 'Received unexpected block: $n, expected
$n+1' error messages. Depending on the timeout setting the transfer
could still complete though.

Signed-off-by: Harm Berntsen <harm.berntsen@nedap.com>
CC: Ramon Fried <rfried.dev@gmail.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2021-01-19 09:15:02 -05:00
David Rivshin
51723c5581 net: Do not respond to ICMP_ECHO_REQUEST if we do not have an IP address
While doing DHCP the interface IP is set to 0.0.0.0. This causes the
check in net.c on dst_ip to be effectively skipped, and all IP datagrams
are accepted up the IP stack. In the case of an ICMP_ECHO_REQUEST for the
matching MAC address (regardless of destination IP), the result is that
an ICMP_ECHO_REPLY is sent. The source address of the ICMP_ECHO_REPLY is
0.0.0.0, which is an illegal source address.

This can happen in common practice with the following sequence:
DHCP (U-Boot or OS) acquires IP address 10.0.0.1
System reboots
U-Boot starts DHCP and send DHCP DISCOVER
DHCP server decides to OFFER 10.0.0.1 again
  (perhaps because of existing lease or manual configuration)
DHCP server tries to PING 10.0.0.1 to see if anyone is squatting on it
DHCP server still has our MAC address in its ARP table for 10.0.0.1
U-Boot receives PING, and responds with an illegal source address
This may further result in a the DHCP server seeing the response as
  confirmation that someone is squatting on 10.0.0.1, and picking a
  new IP address from the pool to try again

Signed-off-by: David Rivshin <drivshin@allworx.com>
2021-01-19 09:15:02 -05:00
Matthias Schiffer
fa795f4525 net: eth-uclass: avoid running start() twice without stop()
Running the start() handler twice without a stop() inbetween completely
breaks communication for some ethernet drivers like fec_mxc.

eth_halt() is called before each eth_init(). Due to the switch to
eth_is_active() in commit 68acb51f44 ("net: Only call halt on a driver
that has been init'ed"), this is not sufficient anymore when netconsole
is active: eth_init_state_only()/eth_halt_state_only() manipulate the
state check that is performed by eth_is_active() without actually
calling into the driver.

The issue can be triggered by starting a network operation (e.g. ping or
tftp) while netconsole is active.

Add an additional "running" flag that reflects the actual state of the
driver and use it to ensure that eth_halt() actually stops the device as
it is supposed to.

Fixes: 68acb51f44 ("net: Only call halt on a driver that has been init'ed")
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
2021-01-19 09:06:15 -05:00
Heinrich Schuchardt
5f59518a7b efi_loader: setting boot device
Up to now the bootefi command used the last file loaded to determine the
boot partition. This has led to errors when the fdt had been loaded from
another partition after the EFI binary.

Before setting the boot device from a loaded file check if it is a PE-COFF
image or a FIT image.

For a PE-COFF image remember address and size, boot device and path.

For a FIT image remember boot device and path.

If the PE-COFF image is overwritten by loading another file, forget it.

Do not allow to start an image via bootefi which is not the last loaded
PE-COFF image.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-01-13 02:38:00 +01:00
Simon Glass
f10643cf8a dm: core: Access device ofnode through functions
At present ofnode is present in the device even if it is never used. With
of-platdata this field is not used, so can be removed. In preparation for
this, change the access to go through inline functions.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-01-05 12:24:41 -07:00
Simon Glass
0fd3d91152 dm: Use access methods for dev/uclass private data
Most drivers use these access methods but a few do not. Update them.

In some cases the access is not permitted, so mark those with a FIXME tag
for the maintainer to check.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
2021-01-05 12:24:40 -07:00
Simon Glass
991759196f dm: Drop the unused arg in uclass_find_device_by_seq()
Now that there is only one sequence number (rather than both requested and
assigned ones) we can simplify this function. Also update its caller to
simplify the logic.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-18 20:32:21 -07:00
Simon Glass
552da3357b net: Update to use new sequence numbers
Checking for seq == -1 is effectively checking that the device is
activated. The new sequence numbers are never -1 for a bound device, so
update the check.

Also drop the note about valid sequence numbers so it is accurate with the
new approach.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-18 20:32:21 -07:00
Simon Glass
8b85dfc675 dm: Avoid accessing seq directly
At present various drivers etc. access the device's 'seq' member directly.
This makes it harder to change the meaning of that member. Change access
to go through a function instead.

The drivers/i2c/lpc32xx_i2c.c file is left unchanged for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-18 20:32:21 -07:00
Simon Glass
caa4daa2ae dm: treewide: Rename 'platdata' variables to just 'plat'
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).

Rename some of the latter variables to end with 'plat' for consistency.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 16:51:08 -07:00
Simon Glass
41575d8e4c dm: treewide: Rename auto_alloc_size members to be shorter
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.

Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 08:00:25 -07:00
Heinrich Schuchardt
e1864db60d net: sntp: remove CONFIG_TIMESTAMP constraint
CONFIG_TIMESTAMP is not related to the RTC drivers. It does not make any
sense to let the updating of the RTC by the sntp command depend on it.

Drop the CONFIG_TIMESTAMP checks.

Furthermore function dm_rtc_set() is enabled by CONFIG_DM_RTC. There is no
reason to require CONFIG_CMD_DATE when using a driver model RTC. The UEFI
sub-system can consume the RTC functions even if there is not date command.

Only check CONFIG_CMD_DATE when using a non-driver model RTC.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-12-01 14:12:28 -05:00
Lyle Franklin
c8e251f82a Adds basic support for ProxyDHCP
- ProxyDHCP allows a second DHCP server to exist alongside your main
  DHCP server and supply additional BOOTP related options
- When u-boot sends out a DHCP request, the real DHCP server will
  respond with a normal response containing the new client IP address
  while simultaneously the ProxyDHCP server will respond with a blank
  client IP address and a `bootfile` option
- This patch adds CONFIG_SERVERIP_FROM_PROXYDHCP (default false) to
  enable this behavior and CONFIG_SERVERIP_FROM_PROXYDHCP_DELAY_MS
  (default 100) which tells u-boot to wait additional time after
  receiving the main DHCP response to give the ProxyDHCP response time
  to arrive
- The PXE spec for ProxyDHCP is more complicated than the solution
  added here as diagramed on page 16:
  http://www.pix.net/software/pxeboot/archive/pxespec.pdf:

```
DHCP Discover will be retried four times. The four timeouts are 4, 8, 16
and 32 seconds respectively. If a DHCPOFFER is received without an Option
timeouts in an attempt to receive a PXE response.
```

- Adding a simple delay worked for my purposes but let me know if a
  more robust solution is required

Signed-off-by: Lyle Franklin <lylejfranklin@gmail.com>
2020-12-01 10:33:37 -05:00
Patrick Wildt
36ea0cab26 net: add a define for the number of packets received as batch
With a define for the magic number of packets received as batch
we can make sure that the EFI network stack caches the same amount
of packets.

Signed-off-by: Patrick Wildt <patrick@blueri.se>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-10-19 22:59:53 +02:00
Sean Anderson
c3f0278e29 net: Expose some errors generated in net_init
net_init does not always succeed, and there is no existing mechanism to
discover errors. This patch allows callers of net_init (such as net_init)
to handle errors. The root issue is that eth_get_dev can fail, but
net_init_loop doesn't expose that. The ideal way to fix eth_get_dev would
be to return an error with ERR_PTR, but there are a lot of callers, and all
of them just check if it's NULL. Another approach would be to change the
signature to something like

int eth_get_dev(struct udevice **pdev)

but that would require rewriting all of the many callers.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-10-10 16:50:12 -04:00
Philippe Reynes
912ece4c3d sntp: use udp framework
This commits update the support of sntp to use
the framework udp. This change allows to remove
all the reference to sntp in the main network
file net/net.c.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 16:55:03 -04:00
Philippe Reynes
b43ea1bf18 net: add a generic udp protocol
This commit adds a generic udp protocol framework in the
network loop. So protocol based on udp may be implemented
without modifying the network loop (for example custom
wait magic packet).

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 16:55:03 -04:00
Heinrich Schuchardt
ad8959138f net: use log_err() for 'No ethernet found' message
Write the 'No ethernet found' message via the log drivers. This allows
suppressing it during output via the syslog driver.

This fixes the problem reported in:

[PATCH 0/4] log: Fix the syslog spam when running tests
https://lists.denx.de/pipermail/u-boot/2020-September/426343.html

Reported-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-09-30 16:48:18 -04:00
Ley Foon Tan
f6a158b996 net: tftp: Fix load_block offset calculation
When load the last block, the "len" might not be a block size. This cause
loading the incorrect last block data.

The fix change "len" to tftp_block_size and minus one tftp_block_size
for offset calculation.

Use same offset calculation formula as in store_block().

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2020-09-30 16:48:18 -04:00
Ley Foon Tan
ae0bdf09ca net: tftp: Fix store_block offset calculation
tftp_cur_block start with 1 for first block, but tftp_cur_block counter is
start with zero when block number is rollover. The existing code
"tftp_cur_block - 1" will cause the block number become -1 in store_block()
when tftp_cur_block is 0 when tftp_cur_block is rollover.

The fix pass in tftp_cur_block to store_block() and minus the
tftp_block_size when do the offset calculation.

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2020-09-30 16:48:18 -04:00
Ley Foon Tan
6bf46367f5 net: tftp: Fix tftp_prev_block counter update
Fixes missing update to tftp_prev_block counter before increase
tftp_cur_block counter when do the tftpput operation.

tftp_prev_block counter is used in update_block_number() function to
check whether block number (sequence number) is rollover. This bug
cause the tftpput command fail to upload a large file when block
number is greater than 16-bit (0xFFFF).

Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2020-09-30 16:48:18 -04:00
Sean Anderson
0851bd1e75 net: mdio: Fix not calling dev_dbg with a device
The name of the device we are working on is `ethdev` and not just `dev`.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Tested-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-09-30 08:53:06 -04:00
Roman Kovalivskyi
2b2a771b40 fastboot: Add support for 'reboot fastboot' command
Android 10 adds support for dynamic partitions and in order to support
this userspace fastboot must be used[1]. New tool fastbootd is
included into recovery.

Userspace fastboot works from recovery and is launched if:
1) - Dynamic partitioning is enabled
2) - Boot control block has 'boot-fastboot' value into command field
The bootloader is expected to load and boot into the recovery image
upon seeing boot-fastboot in the BCB command. Recovery then parses the
BCB message and switches to fastbootd mode[2].

Please note that boot script is expected to handle 'boot-fastboot'
command in BCB and load into recovery mode.

Bootloader must support 'reboot fastboot' command which should reboot
device into userspace fastboot to accomodate those changes[3].

Another command that bootloader must support[3] is 'reboot recovery'. This
command should simply reboot device into recovery mode.

[1] - https://source.android.com/devices/bootloader/fastbootd
[2] - https://source.android.com/devices/bootloader/fastbootd#unified_fastboot_and_recovery
[3] - https://source.android.com/devices/bootloader/fastbootd#modifications_to_the_bootloader

Signed-off-by: Roman Kovalivskyi <roman.kovalivskyi@globallogic.com>
Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Change-Id: I9d2bdc9a6f6f31ea98572fe155e1cc8341e9af76
2020-09-01 14:47:43 +02:00
Marek Szyprowski
def7a5c00f net: ping: reset stored IP address
Reset the stored ping IP address before entering a netloop with different
protocol to ensure that it won't be interrupted by the received
correct ICMP_ECHO_REPLY packet.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2020-08-04 23:30:02 -04:00
Ramon Fried
cc6b87ecaa net: tftp: Add client support for RFC 7440
Add support for RFC 7440: "TFTP Windowsize Option".

This optional feature allows the client and server
to negotiate a window size of consecutive blocks to send as an
alternative for replacing the single-block lockstep schema.

windowsize can be defined statically during compilation by
setting CONFIG_TFTP_WINDOWSIZE, or defined in runtime by
setting an environment variable: "tftpwindowsize"
If not defined, the windowsize is set to 1, meaning that it
behaves as it was never defined.

Choosing the appropriate windowsize depends on the specific
network topology, underlying NIC.
You should test various windowsize scenarios and see which
best work for you.

Setting a windowsize too big can actually decreases performance.

Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2020-08-04 23:30:02 -04:00
Simon Glass
2a64ada78c net: Drop dm.h header file from phy.h
This header file should not be included in other header files. Remove it
and use other headers and C inclusions instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-08-03 22:19:54 -04:00
Adam Ford
3275f26bb6 Convert CONFIG_BOOTP_SEND_HOSTNAME to Kconfig
This converts the following to Kconfig:
   CONFIG_BOOTP_SEND_HOSTNAME

Signed-off-by: Adam Ford <aford173@gmail.com>
2020-07-28 16:18:10 -04:00
Masahiro Yamada
b75d8dc564 treewide: convert bd_t to struct bd_info by coccinelle
The Linux coding style guide (Documentation/process/coding-style.rst)
clearly says:

  It's a **mistake** to use typedef for structures and pointers.

Besides, using typedef for structures is annoying when you try to make
headers self-contained.

Let's say you have the following function declaration in a header:

  void foo(bd_t *bd);

This is not self-contained since bd_t is not defined.

To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h>

  #include <asm/u-boot.h>
  void foo(bd_t *bd);

Then, the include direcective pulls in more bloat needlessly.

If you use 'struct bd_info' instead, it is enough to put a forward
declaration as follows:

  struct bd_info;
  void foo(struct bd_info *bd);

Right, typedef'ing bd_t is a mistake.

I used coccinelle to generate this commit.

The semantic patch that makes this change is as follows:

  <smpl>
  @@
  typedef bd_t;
  @@
  -bd_t
  +struct bd_info
  </smpl>

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-07-17 09:30:13 -04:00
Andre Przywara
f1dd05bc34 net: dm: Remove warning about EEPROM provided MAC address
Similar to patch 821fec0ceb ("net: remove scary warning about EEPROM
provided MAC address") this removes the somewhat awkward "warning" on
boards using DM_ETH:
In many parts of the computing world having a unique MAC address
sitting in some on-NIC storage is considered the normal case.

If there is a properly provided MAC address (either from ROM or from DT),
remove the warning to not scare the user unnecessarily.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2020-07-07 18:23:48 -04:00
Baruch Siach
f1d925d9c3 net: move random_port() to dns
The random_port() routine is not used anywhere else. Make it local to
dns.c to reduce code clutter, and shrink generated code a little.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
2020-06-12 13:17:23 -04:00
Ravik Hasija
0813921042 net: tftp: fix option validation as per RFCs
RFC2348, RFC2349:
- Option string is case in-sensitive.
- Client must generate ERR pkt in case option value mismatch in server OACK
- Fix debug print for options

Signed-off-by: Ravik Hasija <rahasij@linux.microsoft.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2020-06-12 13:17:23 -04:00
Ravik Hasija
de5468e660 net: tftp: fix progress marker for file transfer
During packet sequence number wraparound the show_block_marker() API was
not called, as a result the progress marker doesn't stay within column
boundary. Use position in file instead of sequence number to align the
marker.

Signed-off-by: Ravik Hasija <rahasij@linux.microsoft.com>
Reviewed-By: Ramon Fried <rfried.dev@gmail.com>
2020-06-12 13:17:23 -04:00
Krebs, Olaf
808f13d8fc net: Fix error if some network features are disabled
If 'CONFIG_CMD_TFTPBOOT' or 'CONFIG_CMD_BOOTP' are disabled, the usage must be disabled, too!

Signed-off-by: Olaf Krebs <olaf.krebs@emh-metering.com>
CC: Joe Hershberger <joe.hershberger@ni.com>
2020-06-12 13:17:23 -04:00
Simon Glass
c05ed00afb common: Drop linux/delay.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Simon Glass
eb41d8a1be common: Drop linux/bug.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:23 -04:00
Simon Glass
f7ae49fc4f common: Drop log.h from common header
Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:18 -04:00
Simon Glass
0914011310 command: Remove the cmd_tbl_t typedef
We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.

Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.

This requires quite a few header-file additions.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 18:36:55 -04:00
Simon Glass
4d72caa5b9 common: Drop image.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 17:33:33 -04:00
Simon Glass
52f2423804 common: Drop bootstage.h from common header
Move this fairly uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 17:33:33 -04:00
Simon Glass
90526e9fba common: Drop net.h from common header
Move this header out of the common header. Network support is used in
quite a few places but it still does not warrant blanket inclusion.

Note that this net.h header itself has quite a lot in it. It could be
split into the driver-mode support, functions, structures, checksumming,
etc.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 17:33:31 -04:00
Simon Glass
ba06b3c50b common: Drop uuid.h from common header
Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 14:53:28 -04:00
Ye Li
5fe419ef2a net: Add eth phy generic driver for shared MDIO
For dual ethernet controllers, the HW design may connect ETH phys to
one MDIO ports. So two different ethernet drivers have to share MDIO bus.
Since two ethernet drivers are independent, we can't ensure their probe
order.

To resolve this problem, introduce an eth phy generic driver and uclass.

After eth-uclass binds, we search the mdio node and binds the phy node
with the eth-phy-generic driver.

When one eth driver get its phy device, the parent of phy device will
probe prior than phy device. So this ensure the eth driver ownes the
MDIO bus will be probed before using its MDIO.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 13:24:48 +02:00
Peng Fan
d2b70205dd net: eth-uclass: add return value check
Add return value check

Signed-off-by: Peng Fan <peng.fan@nxp.com>
2020-05-10 13:24:41 +02:00
Patrick Delaunay
31d275b095 net: tftp: remove TFTP_MTU_BLOCKSIZE
Remove the unneeded define TFTP_MTU_BLOCKSIZE.
Since the KConfig migration done by commit b618b37076 ("net:
Convert CONFIG_TFTP_BLOCKSIZE to Kconfig"), CONFIG_TFTP_BLOCKSIZE
is always defined and can be used directly to avoid confusion
(fallback to 1468 in code is never used).

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-04-27 14:55:29 -04:00
Patrick Delaunay
421de7fec8 net: tftp: Add help for CONFIG_TFTP_BLOCKSIZE
Add help message for the CONFIG_TFTP_BLOCKSIZE default value,
as explain in tftp.c before migration in commit b618b37076
("net: Convert CONFIG_TFTP_BLOCKSIZE to Kconfig")

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-04-27 14:55:29 -04:00
Michal Simek
d4172c9406 net: eth-uclass: Fix message if mac is coming from DT or ROM
When local-mac-address DT property is specified it is reported the same way
as address read from eeprom/ROM. Show properly if mac address is coming
from DT or ROM.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-04-06 12:52:45 +02:00
Heinrich Schuchardt
2bcc43b39b net: tftp: use correct printf codes
When printing unsigned numbers use %u.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2020-03-09 18:11:25 -05:00
Rasmus Villemoes
215df01de4 net: convert NET_MAXDEFRAG to Kconfig
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-02-13 10:10:50 -05:00
Simon Glass
336d4615f8 dm: core: Create a new header file for 'compat' features
At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.

Move the compatibility features into a separate header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-02-05 19:33:46 -07:00
Simon Glass
8e8ccfe1aa common: Move the image globals into image.h
These three globals relate to image handling. Move them to the image
header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-01-17 14:02:35 -05:00
Simon Glass
bb872dd930 image: Rename load_addr, save_addr, save_size
These global variables are quite short and generic. In fact the same name
is more often used locally for struct members and function arguments.

Add a image_ prefix to make them easier to distinguish.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-01-17 14:02:35 -05:00
Simon Glass
0ee48252b4 common: Move flash_perror() to flash.h
This function belongs more in flash.h than common.h so move it.

Also remove the space before the bracket in some calls.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-01-17 13:26:48 -05:00
Simon Glass
d721001fd6 net: Move the checksum functions to lib/
These functions are used by code outside the network support, so move them
to lib/ to be more accessible.

Without this, the functions are only accessible in SPL/TPL only if
CONFIG_SPL/TPL_NET are defined. Many boards do not enable those option but
still want to do checksums in this format.

Fix up a few code-style nits while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-15 11:43:57 +08:00
Alex Marginean
2f6245594e net: mdio-uclass: add dm_eth_phy_connect helper function
The function connects an ethernet device to a PHY using DT information.
This API is only available for eth devices with an associated device tree
node.

Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-12-09 09:47:43 -06:00
Alex Marginean
a5d32c37d9 net: mdio-uclass: rename arguments of dm_mdio_phy_connect for clarity
Renamed dm_mdio_phy_connect arguments dev to mdiodev and addr to phyaddr
for a bit more clarity and consistency with the following patches.
Also use NULL instead of 0 on error return path.

Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-12-09 09:47:43 -06:00
Andre Przywara
16cdc2daa0 net: tftp: Fix too small block size
Commit b618b37076 ("net: Convert CONFIG_TFTP_BLOCKSIZE to Kconfig")
accidentally set the default *option* TFTP block size to 512 bytes, even
though the comment in the code says that this is a terrible choice. Most
boards didn't define the symbol before, so they got the default block size
of 1468 bytes before, but now use 512 bytes, which is also the fallback.
This leads to both abysmal performance and a lot of hashes printed
on the screen (one character for every 5K), which is both annoying and
slow over serial links.

Set the default block size in Kconfig back to the value it had before.

This improves TFTP performance from 2.8 MB/s to 6.9 MB/s on a Pine64.

Fixes: b618b37076 ("net: Convert CONFIG_TFTP_BLOCKSIZE to Kconfig")
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-12-09 09:47:43 -06:00
Michael Walle
19820db0bd net: eth-uclass: ignore unavailable devices
device_probe() may fail in which case the seq_id will be -1. Don't
display these devices during startup. While this is only a cosmetic
change, the return value of eth_initialize() will also change to the
actual number of available devices. The return value is only used in
spl_net to decide whether there are any devices to boot from. So
returning only available devices is also more correct in that case.

Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-12-09 09:47:42 -06:00
Bin Meng
ca48cb4028 net: tftp: Fix tftp store address check in store_block()
During testing of qemu-riscv32 with a 2GiB memory configuration,
tftp always fails with a error message:

  Load address: 0x84000000
  Loading: #
  TFTP error: trying to overwrite reserved memory...

It turns out the result of 'tftp_load_addr + tftp_load_size' just
overflows (0x100000000) and the test logic in store_block() fails.
Fix this by adjusting the end address to ULONG_MAX when overflow
is detected.

Fixes: a156c47e39 ("tftp: prevent overwriting reserved memory")
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-12-09 09:47:42 -06:00
Heinrich Schuchardt
8524423da9 net: avoid address-of-packed-member error
sandbox_defconfig does not compile using GCC 9.2.1:

net/net.c: In function ‘net_process_received_packet’:
net/net.c:1288:23: error: taking address of packed member of ‘struct
ip_udp_hdr’ may result in an unaligned pointer value
[-Werror=address-of-packed-member]
 1288 |    sumptr = (ushort *)&(ip->udp_src);
      |                       ^~~~~~~~~~~~~~

Avoid the error by using a u8 pointer instead of an u16 pointer and
in-lining ntohs().

Simplify the checksumming of the last message byte.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-12-09 09:47:42 -06:00
Tom Rini
a6ab4b5470 net: nfs: Only link in NFS code outside of SPL builds
While we have networking use cases within SPL we do not support loading
files via NFS at this point in time.  Disable calling nfs_start() so
that the NFS related code can be garbage collected at link time.

Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-12-09 09:47:41 -06:00
Joe Hershberger
fb8977c5be net: Always build the string_to_enetaddr() helper
Part of the env cleanup moved this out of the environment code and into
the net code. However, this helper is sometimes needed even when the net
stack isn't included.

Move the helper to lib/net_utils.c like it's similarly-purposed
string_to_ip(). Also rename the moved function to similar naming.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reported-by: Ondrej Jirman <megous@megous.com>
2019-12-09 09:47:41 -06:00
Simon Glass
1045315df0 common: Move get_ticks() function out of common.h
This function belongs in time.h so move it over and add a comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:23:13 -05:00
Simon Glass
840ef4d43b common: Move random-number functions into their own header
Create a new rand.h header file and move functions into it, to reduce
the size of common.h

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2019-12-02 18:23:07 -05:00
Simon Glass
9ce2aa1710 Drop CONFIG_SHOW_ACTIVITY
This feature is not enabled by any board. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2019-12-02 18:23:06 -05:00
Heinrich Schuchardt
5a5d1def59 net: nfs: remove superfluous packed attribute
With GCC 9.2.1 net/nfs.c leads to multiple errors of type
address-of-packed-member.

net/nfs.c: In function ‘rpc_req’:
net/nfs.c:199:18: error: taking address of packed member of
‘struct rpc_t’ may result in an unaligned pointer value
[-Werror=address-of-packed-member]
  199 |  p = (uint32_t *)&(rpc_pkt.u.call.data);
      |                  ^~~~~~~~~~~~~~~~~~~~~~
net/nfs.c: In function ‘nfs_readlink_reply’:
net/nfs.c:631:46: error: taking address of packed member of
‘struct rpc_t’ may result in an unaligned pointer value
[-Werror=address-of-packed-member]
  631 |    nfs3_get_attributes_offset(rpc_pkt.u.reply.data);
      |                               ~~~~~~~~~~~~~~~^~~~~
  LD      drivers/block/built-in.o
net/nfs.c: In function ‘nfs_read_reply’:
net/nfs.c:692:46: error: taking address of packed member of
‘struct rpc_t’ may result in an unaligned pointer value
[-Werror=address-of-packed-member]
  692 |    nfs3_get_attributes_offset(rpc_pkt.u.reply.data);
      |                               ~~~~~~~~~~~~~~~^~~~~

struct rpc_t is only used as local variable. It is naturally packed. So
there is no need for the attribute packed.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:19 -05:00
Heinrich Schuchardt
15eea9a1a8 net: nfs: remove superfluous conversions
rpc_pkt.u.call.data is an array of uint32_t. There is no need to convert
it to uint32_t *.

memcpy() expects void * as it 1st and 2nd argument. There is no point in
converting pointers to char * before passing them to memcpy().

In ntohl(data[1]) != 0 calling ntohl() is superfluous. If the value is
zero, does not depend on the byte order.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:19 -05:00
liucheng (G)
5d14ee4e53 CVE-2019-14196: nfs: fix unbounded memcpy with a failed length check at nfs_lookup_reply
This patch adds a check to rpc_pkt.u.reply.data at nfs_lookup_reply.

Signed-off-by: Cheng Liu <liucheng32@huawei.com>
Reported-by: Fermín Serna <fermin@semmle.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:19 -05:00
liucheng (G)
cf3a4f1e86 CVE-2019-14195: nfs: fix unbounded memcpy with unvalidated length at nfs_readlink_reply
This patch adds a check to rpc_pkt.u.reply.data at nfs_readlink_reply.

Signed-off-by: Cheng Liu <liucheng32@huawei.com>
Reported-by: Fermín Serna <fermin@semmle.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:19 -05:00
liucheng (G)
aa207cf3a6 CVE-2019-14194/CVE-2019-14198: nfs: fix unbounded memcpy with a failed length check at nfs_read_reply
This patch adds a check to rpc_pkt.u.reply.data at nfs_read_reply.

Signed-off-by: Cheng Liu <liucheng32@huawei.com>
Reported-by: Fermín Serna <fermin@semmle.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:19 -05:00
liucheng (G)
741a8a08eb CVE: nfs: fix stack-based buffer overflow in some nfs_handler reply helper functions
This patch adds a check to nfs_handler to fix buffer overflow for CVE-2019-14197,
CVE-2019-14200, CVE-2019-14201, CVE-2019-14202, CVE-2019-14203 and CVE-2019-14204.

Signed-off-by: Cheng Liu <liucheng32@huawei.com>
Reported-by: Fermín Serna <fermin@semmle.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:19 -05:00
liucheng (G)
fe7288069d CVE: net: fix unbounded memcpy of UDP packet
This patch adds a check to udp_len to fix unbounded memcpy for
CVE-2019-14192, CVE-2019-14193 and CVE-2019-14199.

Signed-off-by: Cheng Liu <liucheng32@huawei.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reported-by: Fermín Serna <fermin@semmle.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:19 -05:00
Alex Marginean
6b3abc0482 net: mdio-uclass: name MDIO according to device-name property if preset
Use the optional property device-name to name the MDIO bus.  This works
around limitations with using the DT node name on devices such as
Armada-8040, which integrates two cp100 cores, both featuring MDIOs at the
same relative offsets and with the same DT node names.
The concept was originally proposed by Marvell as a custom property called
mdio-name specific to Marvell driver.  This patch uses the more generic
property device-name and moves this into MDIO class code so other can use
it as well.

Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-09-04 11:37:19 -05:00
Ramon Fried
3eaac6307d net: introduce packet capture support
Add support for capturing ethernet packets and storing
them in memory in PCAP(2.4) format, later to be analyzed by
any PCAP viewer software (IE. Wireshark)

This feature greatly assist debugging network issues such
as detecting dropped packets, packet corruption etc.

Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Alex Marginean <alexm.osslist@gmail.com>
Tested-by: Alex Marginean <alexm.osslist@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:19 -05:00
Joe Hershberger
398e7512d8 net: Fix Covarity Defect 244093
Don't allow unterminated strings

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2019-09-04 11:37:18 -05:00
Simon Glass
f3998fdc4d env: Rename environment.h to env_internal.h
This file contains lots of internal details about the environment. Most
code can include env.h instead, calling the functions there as needed.

Rename this file and add a comment at the top to indicate its internal
nature.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
[trini: Fixup apalis-tk1.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-08-11 19:27:31 -04:00
Simon Glass
e7dcf5645f env: Drop environment.h header file where not needed
This header file is now only used by files that access internal
environment features. Drop it from various places where it is not needed.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Simon Glass
36c8b143c0 env: net: Move eth_parse_enetaddr() to net.c/h
This function fits better with the network subsystem, so move it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Suggested-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Simon Glass
7b51b576d6 env: Move env_get() to env.h
Move env_get() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Simon Glass
9fb625ce05 env: Move env_set() to env.h
Move env_set() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00
Simon Glass
9eef56dbe3 env: Move env_get_ulong() to env.h
Move env_get_ulong() over to the new header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Simon Glass
c7694dd483 env: Move env_set_hex() to env.h
Move env_set_hex() over to the new header file along with env_set_addr()
which uses it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Simon Glass
f1f0ae6a9c env: Move get_env_id() to env.h
Move this function over to the new header file. Also rename it to have an
env_ prefix like the other functions.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-08-11 16:43:41 -04:00
Alex Marginean
8880edba06 net: add MDIO_MUX DM class
Adds a class for MDIO MUXes, which control access to a series of
downstream child MDIOs.
MDIO MUX drivers are required to implement a select function used to switch
between child buses.
MUX children are registered as MDIO buses and they can be used just like
regular MDIOs.

Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-18 16:37:13 -05:00
Alex Marginean
c3452b50c3 net: introduce MDIO DM class for MDIO devices
Adds UCLASS_MDIO DM class supporting MDIO buses that are probed as
stand-alone devices.  Useful in particular for systems that support
DM_ETH and have a stand-alone MDIO hardware block shared by multiple
Ethernet interfaces.

Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-07-15 13:32:25 -05:00
Marek Vasut
b618b37076 net: Convert CONFIG_TFTP_BLOCKSIZE to Kconfig
Convert CONFIG_TFTP_BLOCKSIZE to Kconfig, update defconfigs,
headers and whitelist.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
2019-06-14 16:10:36 -04:00
Marek Vasut
3f6bcdf6a5 net: Convert CONFIG_IP_DEFRAG to Kconfig
Convert CONFIG_IP_DEFRAG to Kconfig, update defconfigs, headers
and whitelist. This patch is a follow-up on a patch by Christian
Gmeiner with the added config/header/whitelist updates.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Reported-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
2019-06-14 16:03:56 -04:00
Thierry Reding
379af67ab3 net: eth-uclass: Support device tree MAC addresses
Add the standard Ethernet device tree bindings (imported from v5.0 of
the Linux kernel) and implement support for reading the MAC address for
Ethernet devices in the Ethernet uclass. If the "mac-address" property
exists, the MAC address will be parsed from that. If that property does
not exist, the "local-mac-address" property will be tried as fallback.

MAC addresses from device tree take precedence over the ones stored in
a network interface card's ROM.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-06-01 13:33:17 -05:00
Thierry Reding
b743bbd2eb net: eth-uclass: Write MAC address to hardware after probe
In order for the device to use the proper MAC address, which can have
been configured in the environment prior to the device being registered,
ensure that the MAC address is written after the device has been probed.
For devices that are registered before the network stack is initialized,
this is already done during eth_initialize(). If the Ethernet device is
on a bus that is not initialized on early boot, such as PCI, the device
is not available at the time eth_initialize() is called, so we need the
MAC address programming to also happen after probe.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-06-01 13:33:16 -05:00
Simon Goldschmidt
9cc2323fee lmb: handle more than one DRAM BANK
This fixes the automatic lmb initialization and reservation for boards
with more than one DRAM bank.

This fixes the CVE-2018-18439 and -18440 fixes that only allowed to load
files into the firs DRAM bank from fs and via tftp.

Found-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-02-02 08:19:17 -05:00
Simon Goldschmidt
65304aade8 lib: lmb: rename lmb_get_unreserved_size to lmb_get_free_size
As a follow-up, change the name of the newly introduced function
'lmb_get_unreserved_size' to 'lmb_get_free_size', which is more
appropriate.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
[trini: Fix test/lib/lmb.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-01-26 08:13:57 -05:00
Chris Packham
67bb984249 net: remove CONFIG_MCAST_TFTP
No mainline board enables CONFIG_MCAST_TFTP and there have been
compilation issues with the code for some time. Additionally, it has a
potential buffer underrun issue (reported as a side note in
CVE-2018-18439).

Remove the multicast TFTP code but keep the driver API for the future
addition of IPv6.

Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-01-24 11:35:30 -06:00
Chris Packham
1a4af5c562 net: move ether_crc to tsec driver
ether_crc was added to the core net code in commit 53a5c424bf
("multicast tftp: RFC2090") so that other drivers could use it. However
the only current user of it is tsec.c so move it there.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-01-24 11:35:29 -06:00
Thomas RIENOESSL
a735e6e9d6 net: explicitly assign errno to return code in case of network failure
When dealing with two ethernet ports and having "netretry" set
to "once", it could occur that the connection (e.g. an ARP
request) failed, hence the status of the netloop was
"NETLOOP_FAIL". Due to the setting of "netretry", the network
logic would then switch to the other network interface,
assigning "ret" with the return value of "net_start_again()".
If this call succeeded we would return 0 (i.e. success) to
the caller when in reality the network action failed.

Signed-off-by: Thomas RIENOESSL <thomas.rienoessl@bachmann.info>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-01-24 11:35:28 -06:00
Simon Goldschmidt
a156c47e39 tftp: prevent overwriting reserved memory
This fixes CVE-2018-18439 ("insufficient boundary checks in network
image boot") by using lmb to check for a valid range to store
received blocks.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
[trini: Always build lib/lmb.o on LMB and lib/fdtdec.o on OF_LIBFDT]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-01-16 23:15:53 -05:00
Duncan Hare
5d457ecbef net: Consolidate UDP header functions
Make it possible to add TCP versions of the same, while reusing
IP portions. This patch should not change any behavior.

Signed-off-by: Duncan Hare <DH@Synoia.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-10-10 12:29:02 -05:00
Joe Hershberger
ac3f26cc15 net: Don't overwrite waiting packets with asynchronous replies
Peter originally sent a fix, but it breaks a number of other things.
This addresses the original reported issue in a different way.

That report was:

> U-Boot has 1 common buffer to send Ethernet frames, pointed to by
> net_tx_packet.  When sending to an IP address without knowing the MAC
> address, U-Boot makes an ARP request (using the arp_tx_packet buffer)
> to find out the MAC address of the IP addressr. When a matching ARP
> reply is received, U-Boot continues sending the frame stored in the
> net_tx_packet buffer.
>
> However, in the mean time, if U-Boot needs to send out any network
> packets (e.g. replying ping packets or ARP requests for its own IP
> address etc.), it will use the net_tx_packet buffer to prepare the
> new packet. Thus this buffer is no longer the original packet meant
> to be transmitted after the ARP reply. The original packet will be
> lost.

This instead uses the ARP tx buffer to send async replies in the case
where we are actively waiting for an ARP reply.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

Reported-by: Tran Tien Dat <peter.trantiendat@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-10 12:29:01 -05:00
Joe Hershberger
3f02c98bd1 net: Add an accessor to know if waiting for ARP
This single-sources the state of the ARP.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-10 12:28:58 -05:00
Jean-Jacques Hiblot
c3211708cf net: eth-uclass: Fix for DM USB ethernet support
When a USB ethernet device is halted, the device driver is removed. When
this happens the uclass private memory is freed and uclass_priv is set to
NULL. This causes a data abort when uclass_priv->state is then set to
ETH_STATE_PASSIVE.

Fix it by checking if uclass_priv is NULL before setting uclass_priv->state

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-08-21 16:21:37 +02:00
Joe Hershberger
6ab1283092 net: Consolidate the parsing of bootfile
The same basic parsing was implemented in tftp and nfs, so add a helper
function to do the work once.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-26 14:08:20 -05:00
Joe Hershberger
f43308fa0c net: Read bootfile from env on netboot_common()
Instead of depending on a env callback for bootfile, read it explicitly.

We do this because the bootfile can be specified on the command line and
if it is, we will overwrite the internal variable. If a netboot_common()
is called again with no bootfile parameter, we want to use the one in
the environment.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-26 14:08:20 -05:00
Joe Hershberger
16cf145fd6 net: Make copy_filename() accept NULL src
Rather than crashing, check the src ptr and set dst to empty string.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-26 14:08:20 -05:00
Joe Hershberger
3855cad623 net: Re-check prerequisites when autoloading
With net autoload, we check the prerequisites for the initial command,
but the greater prerequisites when autoloading are not checked.

If we would attempt to autoload, check those prerequisites too.

If we are not expecting a serverip from the server, then don't worry
about it not being set, but don't attempt to load if it isn't.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-26 14:08:20 -05:00
Joe Hershberger
3a66fcb7c3 net: When checking prerequisites, consider boot_file_name
For net_boot_common, we allow the serverip to be specified as part of
the boot file name. For net commands that require serverip, include that
source as a valid specification of serverip.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
2018-07-26 14:08:19 -05:00
Joe Hershberger
faecf84ab1 net: Always print basic info for nfs, just like tftp
nfs was only printing basic info about the transfer in the case of a
DEBUG build. Print the same level of detail as tftp always.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-26 14:08:19 -05:00
Joe Hershberger
347e32b01d net: Check subnet against the actual ip address in use for nfs
The check for sending to the gateway was not using the correct variable
for comparison, so it was reporting that packets are sent to the gateway
when they were not.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-26 14:08:19 -05:00
Joe Hershberger
2d114b83a7 net: Correct size of NFS buffers
Reported-by: Coverity (CID: 152888)
Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-26 14:08:19 -05:00
Joe Hershberger
68acb51f44 net: Only call halt on a driver that has been init'ed
With driver model, we were not checking if the state of the device was
marked as active before calling the halt function. Check that the device
is probed and also marked as active. This avoids the case where we were
calling halt on the first device in net_init() and the driver would
operate on bogus data structures causing problems. In this case, the
priv was all 0, so halt() would close STDIN.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-07-26 14:08:17 -05:00
Alexander Graf
bdce340cc6 net: Add option to prefer bootp/dhcp serverip
Currently we can choose between 2 different types of behavior for the
serverip variable:

  1) Always overwrite it with the DHCP server IP address (default)
  2) Ignore what the DHCP server says (CONFIG_BOOTP_SERVERIP)

This patch adds a 3rd option:

  3) Use serverip from DHCP if no serverip is given
     (CONFIG_BOOTP_PREFER_SERVERIP)

With this new option, we can have the default case that a boot file gets
loaded from the DHCP provided TFTP server work while allowing users to
specify their own serverip variable to explicitly use a different tftp
server.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-02 14:14:21 -05:00
Alexander Graf
449312c1c0 net: Prefer command line arguments
We can call commands like dhcp and bootp without arguments or with
explicit command line arguments that really should tell the code where
to look for files instead.

Unfortunately, the current code simply overwrites command line arguments
in the dhcp case with dhcp values.

This patch allows the code to preserve the command line values if they
were set on the command line. That way the semantics are slightly more
intuitive.

The reason this patch does that by introducing a new variable is that we
can not rely on net_boot_file_name[0] being unset, as today it's
completely legal to call "dhcp" and afterwards run "tftp" and expect the
latter to repeat the same query as before. I would prefer not to break
that behavior in case anyone relies on it.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-02 14:14:20 -05:00
Lothar Felten
d8970dae27 net: Add new wol command - Wake on LAN
Add a new command 'wol': Wait for an incoming Wake-on-LAN packet or
time out if no WoL packed is received.
If the WoL packet contains a password, it is saved in the environment
variable 'wolpassword' using the etherwake format (dot or colon
separated decimals).

Intended use case: a networked device should boot an alternate image.
It's attached to a network on a client site, modifying the DHCP server
configuration or setup of a tftp server is not allowed.
After power on the device waits a few seconds for a WoL packet. If a
packet is received, the device boots the alternate image. Otherwise
it boots the default image.

This method is a simple way to interact with a system via network even
if only the MAC address is known. Tools to send WoL packets are
available on all common platforms.

Some Ethernet drivers seem to pad the incoming packet. The additional
padding bytes might be recognized as Wake-on-LAN password bytes.

By default enabled in pengwyn_defconfig.

Signed-off-by: Lothar Felten <lothar.felten@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-02 14:14:20 -05:00
Alex Kiernan
6dc73df73b net: fastboot: Fix build when FASTBOOT_FLASH is disabled
When building without FASTBOOT_FLASH we don't include the intermediate
update callback to keep the client alive, so ensure we don't try setting
it here.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-02 14:14:20 -05:00
Vasily Khoruzhick
d48d40a091 net: nfs: don't fail when nfs_read_reply returns -NFS_RPC_DROP
That can happen if duplicate UDP packet arrived, and that's not uncommon.
Anyway, we ignore packets with rpc_id lower than last we sent for other
requests, so it makes sense to do that for read request as well.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-06-13 13:54:16 -05:00
Leonid Iziumtsev
60177b2617 net: Protect net_state from reentrant net_loop()
Global variable "net_state" is used in net_loop() state-machine.
But it happens that some times the net_loop() can be called
multiple times in the same call stack. For example when the
netconsole is enabled and we print the message while some other
net protocol is in action. Netconsole will overwrite the "net_state"
and that will break the logic for earlier started protocol.

To protect the state save and restore "net_state" variable each
time when we enter and exit net_loop().

Signed-off-by: Leonid Iziumtsev <leonid.iziumtsev@se.atlascopco.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-06-13 13:54:16 -05:00
Mario Six
3ce4304205 net: Initialize as many ethernet devices as possible
On devices that have their first network interface provided by a FPGA,
the initialization of further interfaces will fail if the FPGA is not
yet programmed. This leads to problems during factory setup when the
data is supposed to be loaded over secondary netowork interfaces.

To avoid this, use the uclass_{first,next}_device_check functions to
initialize as many ethernet devices as possible.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-06-13 13:54:15 -05:00
Mario Six
2d8f25ed7b net: Always align tx packets
Make sure that TX packets are always cache-aligned.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-06-13 13:54:15 -05:00
Alex Kiernan
f73a7df984 net: fastboot: Merge AOSP UDP fastboot
Merge UDP fastboot support from AOSP:

  https://android.googlesource.com/platform/external/u-boot/+/android-o-mr1-iot-preview-8

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Alex Deymo <deymo@google.com>
Signed-off-by: Jocelyn Bohr <bohr@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-05-30 11:59:21 +02:00
Chris Packham
4b4dc5211e net: bootp: Fix compile error processing ntpserver option
When the following configuration is set

  # CONFIG_CMD_DHCP is not set
  CONFIG_CMD_BOOTP=y
  CONFIG_BOOTP_NTPSERVER=y

The following compile error is observed

  error: used struct type value where scalar is required
    if (net_ntp_server)
        ^~~~~~~~~~~~~~

Resolve this by checking net_ntp_server.s_addr instead.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-05-14 21:28:38 -04:00
Tom Rini
f739fcd831 SPDX: Convert a few files that were missed before
As part of the main conversion a few files were missed.  These files had
additional whitespace after the '*' and before the SPDX tag and my
previous regex was too strict.  This time I did a grep for all SPDX tags
and then filtered out anything that matched the correct styles.

Fixes: 83d290c56f ("SPDX: Convert all of our single license tags to Linux Kernel style")
Reported-by: Heinrich Schuchardt <xypron.debian@gmx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-10 20:38:35 -04:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Tom Rini
d024236e5a Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR
We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-27 14:54:48 -04:00
Joe Hershberger
5f967c0493 net: Make core net code depend on NET instead of CMD_NET
No commands are necessary to have a network stack.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

Reviewed-by: Duncan Hare <dh@synoia.com>
2018-04-13 15:48:30 -05:00
Joe Hershberger
92fa44d58f net: Move net command options to the cmd menu
Options that controlled the tftp and bootp commands depended on their
commands, but lived in the net menu.

Move them so they are in a consistent location.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
2018-04-13 15:48:05 -05:00
Joe Hershberger
d7a45eafda net: Make CMD_NET a menuconfig
Previously, CMD_NET was an alias for 2 commands (bootp and tftpboot) and
they we not able to be disabled. Separate out those 2 commands and move
CMD_NET up to the menu level, which more accurately represents the code.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

Reviewed-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Duncan Hare <dh@synoia.com>
2018-04-13 15:47:57 -05:00
Alex Kiernan
9925f1dbc3 net: Move enetaddr env access code to env config instead of net config
In order that we can use eth_env_* even when CONFIG_NET isn't set, move
these functions to environment code from net code.

This fixes failures such as:

  board/ti/am335x/built-in.o: In function `board_late_init':
  board/ti/am335x/board.c:752: undefined reference to `eth_env_set_enetaddr'
  u-boot/board/ti/am335x/board.c:766: undefined reference to `eth_env_set_enetaddr'

which caters for use cases such as:

commit f411b5cca4 ("board: am335x: Always set eth/eth1addr environment
variable")

when Ethernet is required in Linux, but not U-Boot.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
2018-04-08 23:00:58 -04:00
Alexander Graf
a532e2f2e5 net: Only access network devices after init
In the efi_loader main loop we call eth_rx() occasionally. This rx function
might end up calling into devices that haven't been initialized yet,
potentially resulting in a lot of transfer timeouts.

Instead, let's make sure the ethernet device is actually initialized before
reading from or writing to it.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-03-22 15:05:31 -05:00
Leonid Iziumtsev
17d413b253 net: Fix netretry condition
The "net_try_count" counter starts from "1".
And the "retrycnt" contains requested amount of retries.

With current logic, that means that the actual retry amount
will be one time less then what we set in "netretry" env.
For example setting "netretry" to "once" will make "retrycnt"
equal "1", so no retries will be triggered at all.

Fix the logic by changing the statement of "if" condition.

Signed-off-by: Leonid Iziumtsev <leonid.iziumtsev@se.atlascopco.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2018-03-22 15:05:31 -05:00
Michal Simek
3b3ea2c56e Kconfig: cmd: Make networking command dependent on NET
Enable networking command only when NET is enabled.
And remove selecting NET for CMD_NET

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-02-27 16:25:30 -05:00
Adam Ford
d021e94210 Convert CONFIG_BOOTP_BOOTPATH et al to Kconfig
This converts the following to Kconfig:
   CONFIG_BOOTP_BOOTPATH
   CONFIG_BOOTP_DNS
   CONFIG_BOOTP_GATEWAY
   CONFIG_BOOTP_HOSTNAME
   CONFIG_BOOTP_PXE
   CONFIG_BOOTP_SUBNETMASK
   CONFIG_CMDLINE_EDITING
   CONFIG_AUTO_COMPLETE
   CONFIG_SYS_LONGHELP
   CONFIG_SUPPORT_RAW_INITRD
   CONFIG_ENV_VARS_UBOOT_CONFIG

Signed-off-by: Adam Ford <aford173@gmail.com>
[trini: Re-run the migration]
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-02-23 21:41:49 -05:00
Adam Ford
a5a37567c4 Convert CONFIG LIB_HW_RAND to Kconfig
config_fallbacks.h had some logic to automatically select
LIB_RAND if RANDOM_UUID or CMD_UUID were set if LIB_HW_RAND wasn't
already selected.  By migrating LIB_HW_RAND to Kconfig, we can
remove this check from config_fallbacks.h and put it into Kconfig

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
[trini: Turn into a choice, add NET_RANDOM_ETHADDR]
Signed-off-by: Tom Rini <trini@konsulko.com>
2018-02-08 12:48:22 -05:00
Joe Hershberger
2099b9f27c net: dhcp: Allow "MAY_FAIL" to still try each adapter
This change allows the "MAY_FAIL" DHCP option to still attempt to
contact a DHCP server on each adapter and only give up once each
adapter has failed once.  To get the existing behavior, set the
already-existing ethrotate=no variable.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Keng Soon Cheah <keng.soon.cheah@ni.com>
Cc: Chen Yee Chew <chen.yee.chew@ni.com>
2018-01-15 12:05:23 -06:00
Joe Hershberger
765a159cf5 net: Remove nfs.h include from bootp.c
Nothing from this header is used there, so remove it.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2018-01-15 12:05:15 -06:00
Jörg Krause
64b8d7a677 net/tftp: fix build if CMD_BOOTEFI is not set
Fixes:
net/tftp.c:811: undefined reference to `efi_set_bootdev'

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-22 07:40:05 -04:00
Tom Rini
0b1e580672 net: nfs: Drop CONFIG_NFS_READ_SIZE
In the general case, CONFIG_NFS_READ_SIZE is unchanged from the default
of 1024.  There are in fact no in-tree users that increase this size.
Adjust the comment to reflect what could be done in the future in
conjunction with CONFIG_IP_DEFRAG.

Cc: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2017-09-07 13:23:52 -05:00
Simon Glass
723806cc5b env: Rename some other getenv()-related functions
We are now using an env_ prefix for environment functions. Rename these
other functions as well, for consistency:

   getenv_vlan()
   getenv_bootm_size()
   getenv_bootm_low()
   getenv_bootm_mapsize()
   env_get_default()

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:31:11 -04:00
Simon Glass
35affd7a2f env: Rename eth_getenv_enetaddr() to eth_env_get_enetaddr()
Rename this function for consistency with env_get().

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:30:44 -04:00
Simon Glass
bfebc8c965 env: Rename getenv_hex(), getenv_yesno(), getenv_ulong()
We are now using an env_ prefix for environment functions. Rename these
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:30:32 -04:00
Simon Glass
00caae6d47 env: Rename getenv/_f() to env_get()
We are now using an env_ prefix for environment functions. Rename these
two functions for consistency. Also add function comments in common.h.

Quite a few places use getenv() in a condition context, provoking a
warning from checkpatch. These are fixed up in this patch also.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:30:24 -04:00
Simon Glass
fd1e959e91 env: Rename eth_setenv_enetaddr() to eth_env_set_enetaddr()
Rename this function for consistency with env_set().

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:23:56 -04:00
Simon Glass
018f530323 env: Rename common functions related to setenv()
We are now using an env_ prefix for environment functions. Rename these
commonly used functions, for consistency. Also add function comments in
common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:23:32 -04:00
Simon Glass
382bee57f1 env: Rename setenv() to env_set()
We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16 08:22:18 -04:00
Denis Pynkin
704f3acfcf net: Use packed structures for networking
PXE boot is broken with GCC 7.1 due option '-fstore-merging' enabled
by default for '-O2':

BOOTP broadcast 1
data abort
pc : [<8ff8bb30>]          lr : [<00004f1f>]
reloc pc : [<17832b30>]    lr : [<878abf1f>]
sp : 8f558bc0  ip : 00000000     fp : 8ffef5a4
r10: 8ffed248  r9 : 8f558ee0     r8 : 8ffef594
r7 : 0000000e  r6 : 8ffed700     r5 : 00000000  r4 : 8ffed74e
r3 : 00060101  r2 : 8ffed230     r1 : 8ffed706  r0 : 00000ddd
Flags: nzcv  IRQs off  FIQs off  Mode SVC_32
Resetting CPU ...

Core reason is usage of structures for network headers without packed
attribute.

Reviewed-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Signed-off-by: Denis Pynkin <denis.pynkin@collabora.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2017-08-07 15:18:31 -05:00
Holger Dengler
66c89ee31b net: Fix compile failure in net.c
Add missing "defined" statement to fix the compile failures.

Signed-off-by: Holger Dengler <dengler@linutronix.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2017-08-07 15:18:31 -05:00
Vladimir Zapolskiy
0c17b1b79c net: tftp: silence a subscript above array bounds compile time warning
For strncpy() select a minimal string length of destination and source
strings, here DEFAULT_NAME_LEN is preferable to MAX_LEN.

Due to the NUL-terminated contents of default_string the change is
a noop, however it removes a compilation warning if SH2/3/4 platform
specific strncpy() function is used:

  In file included from include/linux/string.h:21:0,
                   from include/common.h:28,
                   from net/tftp.c:9:

  net/tftp.c: In function 'tftp_start':
  arch/sh/include/asm/string.h:52:42: warning: array subscript is above array bounds [-Warray-bounds]
     : "0" (__dest), "1" (__src), "r" (__src+__n)

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2017-08-07 15:18:29 -05:00
Jimmy Du
b044cc1dee net: Get mac address from driver as seed
Previously seeded by obtaining mac addr from env. If mac addr was
never set, rand would output 0. This fix obtains the mac addr
from driver instead.

Signed-off-by: Jimmy Du <jimmy.du@ni.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2017-08-07 15:18:28 -05:00
xypron.glpk@gmx.de
c08248d601 net: core: avoid possible NULL pointer dereference
Checking if dev is NULL after dereferencing it does not make sense.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2017-06-02 14:44:19 -05:00
Tom Rini
9444387838 net: Disable the format-extra-args warning
We will see warnings such as:
net/eth_common.c:57:61: warning: data argument not used by format string [-Wformat-extra-args]
        sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
                                              ~~~~~~~~             ^
With clang.  In this case we do not want to re-write our code to be less
compact as the above is intentional and readable.  Add a comment above
the disabling so that it's clear why we want that warning off.

Signed-off-by: Tom Rini <trini@konsulko.com>
2017-05-12 08:37:40 -04:00
xypron.glpk@gmx.de
8cfb77387e net/arp: remove superfluous assignments
The value of variable pkt is never used.

The problem was indicated by clang scan-build.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2017-05-12 08:37:19 -04:00
Alexandre Messier
27a0f038a7 net: link_local: Fix netmask endianness bug
The network mask must be stored in network order when in a
'struct in_addr'.

This fix removes the "gatewayip needed but not set" message on the
console when using a link-local IP setup.

Signed-off-by: Alexandre Messier <amessier@tycoint.com>
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2017-03-26 09:58:19 -05:00