From: Jerome Forissier <jerome.forissier@linaro.org>
Date: Thu, 14 Nov 2024 17:20:07 +0000 (+0100)
Subject: net: lwip: dhcp: support arguments for TFTP file download
X-Git-Url: http://git.dujemihanovic.xyz/img/static/git-logo.png?a=commitdiff_plain;h=13e13f58671305ac20a889d7271d85cb7e27af78;p=u-boot.git

net: lwip: dhcp: support arguments for TFTP file download

The dhcp command is supposed to have the following syntax as per
"help dhcp":

  dhcp [loadAddress] [[hostIPaddr:]bootfilename]

In other words, any arguments should be passed to an implicit
tftpboot command after the DHCP exchange has occurred.

Add the missing code to the lwIP version of do_dhcp().

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

diff --git a/net/lwip/dhcp.c b/net/lwip/dhcp.c
index bfc72ca6c5..9b882cf5b8 100644
--- a/net/lwip/dhcp.c
+++ b/net/lwip/dhcp.c
@@ -111,9 +111,21 @@ static int dhcp_loop(struct udevice *udev)
 
 int do_dhcp(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
+	int ret;
+
 	eth_set_current();
 
-	return dhcp_loop(eth_get_dev());
+	ret = dhcp_loop(eth_get_dev());
+	if (ret)
+		return ret;
+
+	if (argc > 1) {
+		struct cmd_tbl cmdtp = {};
+
+		return do_tftpb(&cmdtp, 0, argc, argv);
+	}
+
+	return CMD_RET_SUCCESS;
 }
 
 int dhcp_run(ulong addr, const char *fname, bool autoload)