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-rw-r--r--README24
-rw-r--r--common/cmd_net.c7
-rw-r--r--include/cmd_confdefs.h2
-rw-r--r--include/configs/CPCI405.h10
-rw-r--r--include/configs/CPCI4052.h10
-rw-r--r--include/configs/CPCI405AB.h5
-rw-r--r--include/net.h3
-rw-r--r--net/bootp.c23
-rw-r--r--net/net.c3
9 files changed, 74 insertions, 13 deletions
diff --git a/README b/README
index efd469330..fb2529aac 100644
--- a/README
+++ b/README
@@ -901,6 +901,29 @@ The following options need to be configured:
4th and following
BOOTP requests: delay 0 ... 8 sec
+- DHCP Advanced Options:
+ CONFIG_BOOTP_MASK
+
+ You can fine tune the DHCP functionality by adding
+ these flags to the CONFIG_BOOTP_MASK define:
+
+ CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS
+ serverip from a DHCP server, it is possible that more
+ than one DNS serverip is offered to the client.
+ If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
+ serverip will be stored in the additional environment
+ variable "dnsip2". The first DNS serverip is always
+ stored in the variable "dnsip", when CONFIG_BOOTP_DNS
+ is added to the CONFIG_BOOTP_MASK.
+
+ CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable
+ to do a dynamic update of a DNS server. To do this, they
+ need the hostname of the DHCP requester.
+ If CONFIG_BOOP_SEND_HOSTNAME is added to the
+ CONFIG_BOOTP_MASK, the content of the "hostname"
+ environment variable is passed as option 12 to
+ the DHCP server.
+
- Status LED: CONFIG_STATUS_LED
Several configurations allow to display the current
@@ -2118,6 +2141,7 @@ depending the information provided by your boot server:
bootfile - see above
dnsip - IP address of your Domain Name Server
+ dnsip2 - IP address of your secondary Domain Name Server
gatewayip - IP address of the Gateway (Router) to use
hostname - Target hostname
ipaddr - see above
diff --git a/common/cmd_net.c b/common/cmd_net.c
index 4d4a1ea9e..e9b54d245 100644
--- a/common/cmd_net.c
+++ b/common/cmd_net.c
@@ -116,6 +116,13 @@ static void netboot_update_env(void)
setenv("dnsip", tmp);
}
+#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+ if (NetOurDNS2IP) {
+ ip_to_string (NetOurDNS2IP, tmp);
+ setenv("dnsip2", tmp);
+ }
+#endif
+
if (NetOurNISDomain[0])
setenv("domain", NetOurNISDomain);
diff --git a/include/cmd_confdefs.h b/include/cmd_confdefs.h
index 8b8b0f58e..d7f1fd4fe 100644
--- a/include/cmd_confdefs.h
+++ b/include/cmd_confdefs.h
@@ -148,6 +148,8 @@
#define CONFIG_BOOTP_BOOTPATH 0x00000010
#define CONFIG_BOOTP_BOOTFILESIZE 0x00000020
#define CONFIG_BOOTP_DNS 0x00000040
+#define CONFIG_BOOTP_DNS2 0x00000080
+#define CONFIG_BOOTP_SEND_HOSTNAME 0x00000100
#define CONFIG_BOOTP_VENDOREX 0x80000000
diff --git a/include/configs/CPCI405.h b/include/configs/CPCI405.h
index 4be94ed85..b87704371 100644
--- a/include/configs/CPCI405.h
+++ b/include/configs/CPCI405.h
@@ -69,12 +69,10 @@
#define CONFIG_MII 1 /* MII PHY management */
#define CONFIG_PHY_ADDR 0 /* PHY address */
-#if 0 /* test-only */
-#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | \
- CONFIG_BOOTP_VENDOREX)
-#else
-#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT)
-#endif
+#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | \
+ CONFIG_BOOTP_DNS | \
+ CONFIG_BOOTP_DNS2 | \
+ CONFIG_BOOTP_SEND_HOSTNAME )
#define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
CFG_CMD_DHCP | \
diff --git a/include/configs/CPCI4052.h b/include/configs/CPCI4052.h
index 1f9d39c60..dd2fa7ffe 100644
--- a/include/configs/CPCI4052.h
+++ b/include/configs/CPCI4052.h
@@ -72,12 +72,10 @@
#define CONFIG_RTC_M48T35A 1 /* ST Electronics M48 timekeeper */
-#if 0 /* test-only */
-#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | \
- CONFIG_BOOTP_VENDOREX)
-#else
-#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT)
-#endif
+#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | \
+ CONFIG_BOOTP_DNS | \
+ CONFIG_BOOTP_DNS2 | \
+ CONFIG_BOOTP_SEND_HOSTNAME )
#define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
CFG_CMD_DHCP | \
diff --git a/include/configs/CPCI405AB.h b/include/configs/CPCI405AB.h
index 00adfd599..d55b51eb9 100644
--- a/include/configs/CPCI405AB.h
+++ b/include/configs/CPCI405AB.h
@@ -65,7 +65,10 @@
#define CONFIG_RTC_M48T35A 1 /* ST Electronics M48 timekeeper */
-#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT)
+#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | \
+ CONFIG_BOOTP_DNS | \
+ CONFIG_BOOTP_DNS2 | \
+ CONFIG_BOOTP_SEND_HOSTNAME )
#define CONFIG_COMMANDS ( CONFIG_CMD_DFL | \
CFG_CMD_DHCP | \
diff --git a/include/net.h b/include/net.h
index dd8d37804..2d4aa94d0 100644
--- a/include/net.h
+++ b/include/net.h
@@ -275,6 +275,9 @@ typedef struct icmphdr {
extern IPaddr_t NetOurGatewayIP; /* Our gateway IP addresse */
extern IPaddr_t NetOurSubnetMask; /* Our subnet mask (0 = unknown)*/
extern IPaddr_t NetOurDNSIP; /* Our Domain Name Server (0 = unknown)*/
+#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+extern IPaddr_t NetOurDNS2IP; /* Our 2nd Domain Name Server (0 = unknown)*/
+#endif
extern char NetOurNISDomain[32]; /* Our NIS domain */
extern char NetOurHostName[32]; /* Our hostname */
extern char NetOurRootPath[64]; /* Our root path */
diff --git a/net/bootp.c b/net/bootp.c
index 31b224327..854ca16d6 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -174,6 +174,11 @@ static void BootpVendorFieldProcess(u8 *ext)
if (NetOurDNSIP == 0) {
NetCopyIP(&NetOurDNSIP, (IPaddr_t*)(ext+2));
}
+#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+ if ((NetOurDNS2IP == 0) && (size > 4)) {
+ NetCopyIP(&NetOurDNS2IP, (IPaddr_t*)(ext+2+4));
+ }
+#endif
break;
case 7: /* Log server - Not yet supported */
break;
@@ -365,6 +370,9 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, IPaddr_t Req
#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
u8 *x;
#endif
+#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME)
+ uchar *hostname;
+#endif
*e++ = 99; /* RFC1048 Magic Cookie */
*e++ = 130;
@@ -402,6 +410,16 @@ static int DhcpExtended(u8 *e, int message_type, IPaddr_t ServerID, IPaddr_t Req
*e++ = tmp & 0xff;
}
+#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_SEND_HOSTNAME)
+ if ( (hostname = getenv("hostname")) ) {
+ int hostnamelen = strlen(hostname);
+ *e++ = 12; /* Hostname */
+ *e++ = hostnamelen;
+ memcpy(e,hostname,hostnamelen);
+ e += hostnamelen;
+ }
+#endif
+
#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_VENDOREX)
if ((x = dhcp_vendorex_prep (e)))
return x - start ;
@@ -690,6 +708,11 @@ static void DhcpOptionsProcess(uchar *popt)
break;
case 6:
NetCopyIP(&NetOurDNSIP, (popt+2));
+#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+ if ( *(popt+1) > 4 ) {
+ NetCopyIP(&NetOurDNS2IP, (popt+2+4));
+ }
+#endif
break;
case 12:
size = truncate_sz ("Host Name",
diff --git a/net/net.c b/net/net.c
index dafcc561e..a13974229 100644
--- a/net/net.c
+++ b/net/net.c
@@ -84,6 +84,9 @@
IPaddr_t NetOurSubnetMask=0; /* Our subnet mask (0=unknown) */
IPaddr_t NetOurGatewayIP=0; /* Our gateways IP address */
IPaddr_t NetOurDNSIP=0; /* Our DNS IP address */
+#if (CONFIG_BOOTP_MASK & CONFIG_BOOTP_DNS2)
+IPaddr_t NetOurDNS2IP=0; /* Our 2nd DNS IP address */
+#endif
char NetOurNISDomain[32]={0,}; /* Our NIS domain */
char NetOurHostName[32]={0,}; /* Our hostname */
char NetOurRootPath[64]={0,}; /* Our bootpath */
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 12:18:05 +0000