u-boot.git/net, branch v2026.04

net: lwip: wget: rework the '#' printing

2026-02-06T15:42:45+00:00

Currently, the LWIP wget command prints excessive amount of progress
indicator '#' for very long file downloads, limit this to one line
that scales according to transfer size.

The HTTP server does report the size of the entire file in protocol
headers, which are received before the actual data transfer. Cache
this information and use it to adaptively print progress indicator
'#' until it fills one entire line worth of '#', which indicates the
transfer has completed. This way, long transfers don't print pages of
'#', but every transfer will print exactly one line worth of '#'. The
algorithm for '#' printing is the same as TFTP tsize one.

Signed-off-by: Marek Vasut 
Acked-by: Jerome Forissier

net: lwip: tftp: add support of tsize option to client

2026-02-06T15:42:37+00:00

The TFTP server can report the size of the entire file that is about to
be received in the Transfer Size Option, this is described in RFC 2349.
This functionality is optional and the server may not report tsize in
case it is not supported.

Always send tsize request to the server to query the transfer size,
and in case the server does respond, cache that information locally
in tftp_state.tsize, otherwise cache size 0. Introduce new function
tftp_client_get_tsize() which returns the cached tftp_state.tsize so
clients can determine the transfer size and use it.

Update net/lwip/tftp.c to make use of tftp_client_get_tsize() and
avoid excessive printing of '#' during TFTP transfers in case the
transfer size is reported by the server.

Submitted upstream: https://savannah.nongnu.org/patch/index.php?item_id=10557

Signed-off-by: Marek Vasut 
Acked-by: Jerome Forissier

net: tftp: Fix TFTP Transfer Size data type

2026-02-06T15:37:31+00:00

The TFTP transfer size is unsigned integer, update the data type
and print formating string accordingly to prevent an overflow in
case the file size is longer than 2 GiB.

TFTP transfer of a 3 GiB file, before (wrong) and after (right):
Loading: #################################################  16 EiB
Loading: ##################################################  3 GiB

Signed-off-by: Yuya Hamamachi 
Signed-off-by: Marek Vasut

net: Stop conflating return value with file size in net_loop()

2026-02-06T15:37:31+00:00

The net_loop() currently conflates return value with file size
at the end of successful transfer, in NETLOOP_SUCCESS state.

The return type of net_loop() is int, which makes this practice
workable for file sizes below 2 GiB, but anything above that will
lead to overflow and bogus negative return value from net_loop().

The return file size is only used by a few sites in the code base,
which can be easily fixed. Change the net_loop() return value to
always be only a return code, in case of error the returned value
is the error code, in case of successful transfer the value is 0
or 1 instead of 0 or net_boot_file_size . This surely always fits
into a signed integer.

By keeping the return code 0 or 1 in case of successful transfer,
no conditionals which depended on the old behavior are broken, but
all the sites had to be inspected and updated accordingly.

Fix the few sites which depend on the file size by making them
directly use the net_boot_file_size variable value. This variable
is accessible to all of those sites already, because they all
include net-common.h .

Signed-off-by: Yuya Hamamachi 
Signed-off-by: Marek Vasut

net: lwip: nfs: Prefer nfsserverip over serverip when set

2026-02-04T08:04:36+00:00

Prefer use of a 'nfsserverip' env var before falling back to 'serverip'
when using the nfs command. Similar to how the 'tftpserverip' env var
is preferred over 'serverip' by the tftp command.

This also updates the error message to closer match the error message
used by the lwIP tftp command when a server ip is not set.

Signed-off-by: Jonas Karlman 
Reviewed-by: Jerome Forissier

net: lwip: dhcp: Save DHCP siaddr field to tftpserverip env var

2026-02-04T08:04:36+00:00

The DHCP siaddr field contains the IP address of next server to use in
bootstrap. Typically this will be the IP address of a TFTP server or the
IP address of the DHCP server itself.

RFC 2131, 2. Protocol Summary, Page 10:

   DHCP clarifies the interpretation of the 'siaddr' field as the
   address of the server to use in the next step of the client's
   bootstrap process.  A DHCP server may return its own address in the
   'siaddr' field, if the server is prepared to supply the next
   bootstrap service (e.g., delivery of an operating system executable
   image).  A DHCP server always returns its own address in the 'server
   identifier' option.

Set the 'tftpserverip' env variable when the siaddr field contains an
IP address that is different compared to the DHCP server IP address.

Signed-off-by: Jonas Karlman 
Reviewed-by: Jerome Forissier

net: lwip: Use ipaddr helpers

2026-02-04T08:04:36+00:00

The ip_addr_t of lwIP has support for both IPv6 and IPv4 addresses.
Some lwIP commans is directly accessing the internal addr field of the
ip_addr_t instead of using ipaddr helper functions.

Change to use ipaddr helper functions where appropriate to remove direct
access of the internal addr field. Also change a few instances from ip4
to the version less ipaddr helpers.

There is no intended functional change, besides the change from using
ip4 addr helper to using version less ipaddr helper.

Signed-off-by: Jonas Karlman 
Reviewed-by: Jerome Forissier

net: lwip: dns: Call env_set() from dns loop instead of found callback

2026-02-04T08:04:36+00:00

The lwIP dns command handle env_set() calls from the found callback and
printf() to console in the dns loop. Making it more complex than it
needs to be.

Simplify and ensure any environment variable that is being set is the
same value that would have been printed on console.

There should not be any intended change in behavior, besides the change
from using ip4addr helper to using version less ipaddr helper.

Signed-off-by: Jonas Karlman 
Reviewed-by: Jerome Forissier

net: lwip: nfs: Print device name based on current udevice

2026-02-04T08:04:36+00:00

Use udevice name, similar to other lwip commands, instead of using the
legacy eth_get_name() when printing out the device being used.

Fixes: 230cf3bc2776 ("net: lwip: nfs: Port the NFS code to work with lwIP")
Signed-off-by: Jonas Karlman 
Reviewed-by: Jerome Forissier

net: lwip: dns: Fix print of resolved IP address

2026-02-04T08:04:36+00:00

The lwIP dns command only prints out cached resolved IP addresses.

When a hostname is first resolved and ERR_INPROGRESS is returned the
dns command prints out 0.0.0.0 instead of the resolved IP address.

Fix this by printing out host_ipaddr instead of the temporary ipaddr
that only is valid when ERR_OK is returned.

Fixes: 1361d9f4f00a ("lwip: dns: do not print IP address when a variable is specified")
Signed-off-by: Jonas Karlman 
Reviewed-by: Jerome Forissier