Make some variables available to be used by either the legacy network
code or lwIP by moving them into the net-common files. This also allowed
removing a small number of duplicated variables from the lwIP code.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>

Move the net_state variable into common code so that it can be used by
either the legacy network code or lwIP. This is needed for porting
across the NFS support code for use with lwIP.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>

Add the option to load the bootscript with the tftp command (static IP)
instead of the dhcp command (dynamic IP). For this a new function
tftpb_run similar to dhcp_run, is needed. The selection of which command
to use can be done with the ip_dyn environment variable, which can be
set to yes or no. The ip_dyn variable was chosen as it is already in use
on the imx platforms.
Also edit the bootstd doc.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Benjamin Hahn <B.Hahn@phytec.de>

There are currently two implementations of dhcp_run(): one in cmd/net.c
for NET and one in net/lwip/dhcp.c for NET_LWIP. There is no
justification for that. Therefore, move the NET version into
net/net-common.c to be used by both stacks, and drop the NET_LWIP
version which by the way does not look totally correct.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Suggested-by: Tom Rini <trini@konsulko.com>
Acked-by: Benjamin Hahn <B.Hahn@phytec.de>

Implement the sntp command when NET_LWIP=y.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>

Extract the code that sets the RTC clock from sntp_handler() in
net/sntp.c and make it a new function net_sntp_set_rtc() in
net/net-common.c. This will allow re-use with NET_LWIP.

According to [1] it is safe to assume that all devices have been
converted to DM_RTC so drop the useless code.

[1] https://lists.denx.de/pipermail/u-boot/2025-June/591376.html

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>

Tom Rini <trini@konsulko.com> says:

Hey all,

This is a v3 of Simon's series[1] and depends on the series[2] I posted
the other day that removes <env.h> from <command.h>. With this series
done, I believe we've tackled all of the current cases of headers which
include <env.h> without directly needing it. Much of this series is in
fact Simon's v2 with the main differneces being:
- Removing <env.h> from <net.h> at the end
- Removing env_to_ip() given how little it's used rather than shuffling
  around where it's declared and un-inline'ing it. For a rarely used
  helper, this ends up being cleaner I think. Especially looking at some
  of the users (which called env_get repeatedly). If there's strong
  opinion here about using the other method[3] we can do that instead.
- Setting aside for now how to handle CMD_ELF=y and NO_NET=y because
  today it's actually fine as we unconditionally build lib/net_utils.c
  where string_to_ip() is defined. I'm unsure if a further series is
  warranted here or not. We rely on link-time optimization to keep code
  readable too.

[1]: https://lore.kernel.org/all/20250501010456.3930701-1-sjg@chromium.org
[2]: https://lore.kernel.org/all/20250514225002.15361-1-trini@konsulko.com
[3]: https://lore.kernel.org/all/20250501010456.3930701-23-sjg@chromium.org
Link: https://lore.kernel.org/r/20250515234154.1859366-1-trini@konsulko.com

Now that all of the cases of code that relied on <net.h> to provide
<env.h> (or one of the headers that it includes, and so forth) have been
fixed, we can drop the include from here.

Signed-off-by: Tom Rini <trini@konsulko.com>

Currently, we have the function env_get_ip which takes an IP address
in string form and returns a struct in_addr representation of that
address. It is however little used and means that a number of places
indirectly (and unclearly) get <env.h> via <net.h>. To clean this up
start by replacing env_get_ip() calls with string_to_ip() calls. This is
generally a no-op as env_get_ip(str) is an inline of
string_to_ip(env_get(str)) but in a few cases we can or already have
stored the result of env_get(str) and can save the additional call.

Signed-off-by: Tom Rini <trini@konsulko.com>

Functions called from EFI applications should not do console output.
Refactor the wget code to implement this requirement. The wget_http_info
struct is used to hold the boolean that signifies whether the output is
allowed or not.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>