[PATCH] net: bootp: Make root path (option 17) length configurable

[Andre Kalb <svc.sw.rte.linux@sma.de>]

to adjust the root path length.
Eg to 256 from Linux Kernel

Signed-off-by: Andre Kalb <andre.kalb@sma.de>
---
 include/net.h | 2 +-
 net/Kconfig   | 6 ++++++
 net/bootp.c   | 2 +-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/include/net.h b/include/net.h
index b02e4f630c..6f3f3dfcd4 100644
--- a/include/net.h
+++ b/include/net.h
@@ -540,7 +540,7 @@ extern struct in_addr net_dns_server2;
 #endif
 extern char	net_nis_domain[32];	/* Our IS domain */
 extern char	net_hostname[32];	/* Our hostname */
-extern char	net_root_path[64];	/* Our root path */
+extern char	net_root_path[CONFIG_BOOTP_MAX_ROOT_PATH_LEN];	/* Our root path */
 /** END OF BOOTP EXTENTIONS **/
 extern u8		net_ethaddr[ARP_HLEN];		/* Our ethernet address */
 extern u8		net_server_ethaddr[ARP_HLEN];	/* Boot server enet address */
diff --git a/net/Kconfig b/net/Kconfig
index 2ae9d6a020..553e271ce9 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -123,4 +123,10 @@ config BOOTP_SERVERIP
 	  variable, not the BOOTP server. This affects the operation of both
 	  bootp and tftp.
 
+config BOOTP_MAX_ROOT_PATH_LEN
+	int "Option 17 root path length"
+	default 64
+	help
+	  Select maximal length of option 17 root path.
+
 endif   # if NET
diff --git a/net/bootp.c b/net/bootp.c
index d83e4eb0ba..1566fc5495 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -64,7 +64,7 @@ ulong		bootp_start;
 ulong		bootp_timeout;
 char net_nis_domain[32] = {0,}; /* Our NIS domain */
 char net_hostname[32] = {0,}; /* Our hostname */
-char net_root_path[64] = {0,}; /* Our bootpath */
+char net_root_path[CONFIG_BOOTP_MAX_ROOT_PATH_LEN] = {0,}; /* Our bootpath */
 
 static ulong time_taken_max;
 
-- 
2.31.1