Patch from Eric Norum <eric@cls.usask.ca> to add NTP BOOTP support because

EPICS needs a synchronized time-of-day clock.  This patch is the changes
needed to get NTP server information from a BOOTP server.

This patch also adds NTP server information to the network configuration
structure, too.

6 files changed, 96 insertions, 2 deletions

diff --git a/c/src/exec/libnetworking/nfs/bootp_subr.c b/c/src/exec/libnetworking/nfs/bootp_subr.c
index b39c9e4714..36907cda1d 100644
--- a/c/src/exec/libnetworking/nfs/bootp_subr.c
+++ b/c/src/exec/libnetworking/nfs/bootp_subr.c
@@ -730,7 +730,12 @@ processOptions (unsigned char *optbuf, int optbufSize)
       dhcp_gotnetmask = 1;
       break;
 
-    case 2:    /* Time offset, unused */
+    case 2:    /* Time offset */
+      /* Time offset */
+      if (len!=4) 
+        panic("bootpc: time offset len is %d",len);
+      bcopy (p, &rtems_bsdnet_timeoffset, 4);
+      rtems_bsdnet_timeoffset = ntohl (rtems_bsdnet_timeoffset);
       break;
 
     case 3:
@@ -743,6 +748,32 @@ processOptions (unsigned char *optbuf, int optbufSize)
       }
       break;
 
+    /*
+     * Some old BOOTP daemons don't support the NTP server (42) tag,
+     * but do support the RFC 868 time server (4) tag.  Cheat here
+     * and assume they mean the same thing.
+     */
+    case 4:
+    case 42:
+      /* Time servers */
+      if (len % 4) 
+        panic ("bootpc: time server Len is %d", len);
+      {
+      int tlen = 0;
+      while ((tlen < len) &&
+             (rtems_bsdnet_ntpserver_count < sizeof rtems_bsdnet_config.ntp_server /
+             sizeof rtems_bsdnet_config.ntp_server[0])) {
+        bcopy (p+tlen,
+		&rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count],
+		4);
+        printip("Time Server",
+          rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count]);
+        rtems_bsdnet_ntpserver_count++;
+        tlen += 4;
+      }
+      }
+      break;
+
     case 6:
       /* Domain Name servers */
       if (len % 4) 
diff --git a/c/src/exec/libnetworking/rtems/rtems_bsdnet.h b/c/src/exec/libnetworking/rtems/rtems_bsdnet.h
index 3152099525..b5403d21b0 100644
--- a/c/src/exec/libnetworking/rtems/rtems_bsdnet.h
+++ b/c/src/exec/libnetworking/rtems/rtems_bsdnet.h
@@ -35,6 +35,9 @@
 extern struct in_addr rtems_bsdnet_bootp_server_address;
 extern char *rtems_bsdnet_bootp_server_name;
 extern char *rtems_bsdnet_bootp_boot_file_name;
+extern struct in_addr rtems_bsdnet_ntpserver[];
+extern int rtems_bsdnet_ntpserver_count;
+extern long rtems_bsdnet_timeoffset;
 
 /*
  * Manipulate routing tables
@@ -127,6 +130,7 @@ struct rtems_bsdnet_config {
 	char			*gateway;		/* BOOTP	*/
 	char			*log_host;		/* BOOTP	*/
 	char			*name_server[3];	/* BOOTP	*/
+	char			*ntp_server[3];		/* BOOTP	*/
 };
 extern struct rtems_bsdnet_config rtems_bsdnet_config;
 int rtems_bsdnet_initialize_network (void);
diff --git a/c/src/exec/libnetworking/rtems/rtems_glue.c b/c/src/exec/libnetworking/rtems/rtems_glue.c
index f5a39b1448..b799911861 100644
--- a/c/src/exec/libnetworking/rtems/rtems_glue.c
+++ b/c/src/exec/libnetworking/rtems/rtems_glue.c
@@ -77,6 +77,10 @@ char *rtems_bsdnet_domain_name;
 struct in_addr rtems_bsdnet_nameserver[sizeof rtems_bsdnet_config.name_server /
 			sizeof rtems_bsdnet_config.name_server[0]];
 int rtems_bsdnet_nameserver_count;
+struct in_addr rtems_bsdnet_ntpserver[sizeof rtems_bsdnet_config.ntp_server /
+			sizeof rtems_bsdnet_config.ntp_server[0]];
+int rtems_bsdnet_ntpserver_count;
+long rtems_bsdnet_timeoffset;
 
 /*
  * Perform FreeBSD memory allocation.
@@ -733,6 +737,7 @@ rtems_bsdnet_setup (void)
 	struct sockaddr_in broadcast;
 	struct sockaddr_in gateway;
 	int i;
+	extern char *strdup (const char *cp);
 
 	/*
 	 * Set local parameters
@@ -753,6 +758,13 @@ rtems_bsdnet_setup (void)
 		rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count++].s_addr
 			= inet_addr (rtems_bsdnet_config.name_server[i]);
 	}
+	for (i = 0 ; i < sizeof rtems_bsdnet_config.ntp_server /
+			sizeof rtems_bsdnet_config.ntp_server[0] ; i++) {
+		if (!rtems_bsdnet_config.ntp_server[i])
+			break;
+		rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count++].s_addr
+			= inet_addr (rtems_bsdnet_config.ntp_server[i]);
+	}
 
 	/*
 	 * Configure interfaces
diff --git a/c/src/libnetworking/nfs/bootp_subr.c b/c/src/libnetworking/nfs/bootp_subr.c
index b39c9e4714..36907cda1d 100644
--- a/c/src/libnetworking/nfs/bootp_subr.c
+++ b/c/src/libnetworking/nfs/bootp_subr.c
@@ -730,7 +730,12 @@ processOptions (unsigned char *optbuf, int optbufSize)
       dhcp_gotnetmask = 1;
       break;
 
-    case 2:    /* Time offset, unused */
+    case 2:    /* Time offset */
+      /* Time offset */
+      if (len!=4) 
+        panic("bootpc: time offset len is %d",len);
+      bcopy (p, &rtems_bsdnet_timeoffset, 4);
+      rtems_bsdnet_timeoffset = ntohl (rtems_bsdnet_timeoffset);
       break;
 
     case 3:
@@ -743,6 +748,32 @@ processOptions (unsigned char *optbuf, int optbufSize)
       }
       break;
 
+    /*
+     * Some old BOOTP daemons don't support the NTP server (42) tag,
+     * but do support the RFC 868 time server (4) tag.  Cheat here
+     * and assume they mean the same thing.
+     */
+    case 4:
+    case 42:
+      /* Time servers */
+      if (len % 4) 
+        panic ("bootpc: time server Len is %d", len);
+      {
+      int tlen = 0;
+      while ((tlen < len) &&
+             (rtems_bsdnet_ntpserver_count < sizeof rtems_bsdnet_config.ntp_server /
+             sizeof rtems_bsdnet_config.ntp_server[0])) {
+        bcopy (p+tlen,
+		&rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count],
+		4);
+        printip("Time Server",
+          rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count]);
+        rtems_bsdnet_ntpserver_count++;
+        tlen += 4;
+      }
+      }
+      break;
+
     case 6:
       /* Domain Name servers */
       if (len % 4) 
diff --git a/c/src/libnetworking/rtems/rtems_bsdnet.h b/c/src/libnetworking/rtems/rtems_bsdnet.h
index 3152099525..b5403d21b0 100644
--- a/c/src/libnetworking/rtems/rtems_bsdnet.h
+++ b/c/src/libnetworking/rtems/rtems_bsdnet.h
@@ -35,6 +35,9 @@
 extern struct in_addr rtems_bsdnet_bootp_server_address;
 extern char *rtems_bsdnet_bootp_server_name;
 extern char *rtems_bsdnet_bootp_boot_file_name;
+extern struct in_addr rtems_bsdnet_ntpserver[];
+extern int rtems_bsdnet_ntpserver_count;
+extern long rtems_bsdnet_timeoffset;
 
 /*
  * Manipulate routing tables
@@ -127,6 +130,7 @@ struct rtems_bsdnet_config {
 	char			*gateway;		/* BOOTP	*/
 	char			*log_host;		/* BOOTP	*/
 	char			*name_server[3];	/* BOOTP	*/
+	char			*ntp_server[3];		/* BOOTP	*/
 };
 extern struct rtems_bsdnet_config rtems_bsdnet_config;
 int rtems_bsdnet_initialize_network (void);
diff --git a/c/src/libnetworking/rtems/rtems_glue.c b/c/src/libnetworking/rtems/rtems_glue.c
index f5a39b1448..b799911861 100644
--- a/c/src/libnetworking/rtems/rtems_glue.c
+++ b/c/src/libnetworking/rtems/rtems_glue.c
@@ -77,6 +77,10 @@ char *rtems_bsdnet_domain_name;
 struct in_addr rtems_bsdnet_nameserver[sizeof rtems_bsdnet_config.name_server /
 			sizeof rtems_bsdnet_config.name_server[0]];
 int rtems_bsdnet_nameserver_count;
+struct in_addr rtems_bsdnet_ntpserver[sizeof rtems_bsdnet_config.ntp_server /
+			sizeof rtems_bsdnet_config.ntp_server[0]];
+int rtems_bsdnet_ntpserver_count;
+long rtems_bsdnet_timeoffset;
 
 /*
  * Perform FreeBSD memory allocation.
@@ -733,6 +737,7 @@ rtems_bsdnet_setup (void)
 	struct sockaddr_in broadcast;
 	struct sockaddr_in gateway;
 	int i;
+	extern char *strdup (const char *cp);
 
 	/*
 	 * Set local parameters
@@ -753,6 +758,13 @@ rtems_bsdnet_setup (void)
 		rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count++].s_addr
 			= inet_addr (rtems_bsdnet_config.name_server[i]);
 	}
+	for (i = 0 ; i < sizeof rtems_bsdnet_config.ntp_server /
+			sizeof rtems_bsdnet_config.ntp_server[0] ; i++) {
+		if (!rtems_bsdnet_config.ntp_server[i])
+			break;
+		rtems_bsdnet_ntpserver[rtems_bsdnet_ntpserver_count++].s_addr
+			= inet_addr (rtems_bsdnet_config.ntp_server[i]);
+	}
 
 	/*
 	 * Configure interfaces