From 8ab388bfdbcf1490c8c40480ef187a025b55c553 Mon Sep 17 00:00:00 2001
From: Charles Hardin <ckhardin@gmail.com>
Date: Fri, 12 Apr 2024 13:45:33 -0700
Subject: [PATCH] net: add support to parse the NIS domain for the dhcp options

There is code in the bootp parsing for NIS domain and add the
same support for the dhcp options as well. This allows the same
usage of the data when the dhcp command is used in the boot
command.

Signed-off-by: Charles Hardin <ckhardin@gmail.com>
---
 net/bootp.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/net/bootp.c b/net/bootp.c
index 6800290963..c15472f5d3 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -883,6 +883,14 @@ static void dhcp_process_options(uchar *popt, uchar *end)
 			break;
 		case 28:	/* Ignore Broadcast Address Option */
 			break;
+		case 40:	/* NIS Domain name */
+			if (net_nis_domain[0] == 0) {
+				size = truncate_sz("NIS Domain Name",
+					sizeof(net_nis_domain), size);
+				memcpy(&net_nis_domain, popt + 2, size);
+				net_nis_domain[size] = 0;
+			}
+			break;
 #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
 		case 42:	/* NTP server IP */
 			net_copy_ip(&net_ntp_server, (popt + 2));
-- 
2.39.5