patch-2.1.22 linux/net/netrom/nr_route.c

• Lines: 252
• Date: Sun Jan 19 15:47:29 1997
• Orig file: v2.1.21/linux/net/netrom/nr_route.c
• Orig date: Thu Jan 2 15:55:28 1997

diff -u --recursive --new-file v2.1.21/linux/net/netrom/nr_route.c linux/net/netrom/nr_route.c
@@ -21,8 +21,9 @@
  *					as node callsign.
  *			Alan Cox(GW4PTS) Added the firewall hooks.
  *	NET/ROM 006	Jonathan(G4KLX)	Added the setting of digipeated neighbours.
+ *			Tomi(OH2BNS)	Routing quality and link failure changes.
  */
- 
+
 #include <linux/config.h>
 #if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE)
 #include <linux/errno.h>
@@ -83,6 +84,9 @@
 		if (ax25cmp(ax25, &nr_neigh->callsign) == 0 && nr_neigh->dev == dev)
 			break;
 
+	if (nr_neigh != NULL)
+		nr_neigh->failed = 0;
+
 	if (quality == 0 && nr_neigh != NULL && nr_node != NULL)
 		return 0;
 
@@ -93,10 +97,7 @@
 		nr_neigh->callsign = *ax25;
 		nr_neigh->digipeat = NULL;
 		nr_neigh->dev      = dev;
-		if (ax25cmp(nr, ax25) == 0)
-			nr_neigh->quality = quality;
-		else
-			nr_neigh->quality = sysctl_netrom_default_path_quality;
+		nr_neigh->quality  = sysctl_netrom_default_path_quality;
 		nr_neigh->locked   = 0;
 		nr_neigh->count    = 0;
 		nr_neigh->number   = nr_neigh_no++;
@@ -118,6 +119,9 @@
 		restore_flags(flags);
 	}
 
+	if (quality != 0 && ax25cmp(nr, ax25) == 0)
+		nr_neigh->quality = quality;
+
 	if (nr_node == NULL) {
 		if ((nr_node = (struct nr_node *)kmalloc(sizeof(*nr_node), GFP_ATOMIC)) == NULL)
 			return -ENOMEM;
@@ -131,7 +135,7 @@
 		nr_node->routes[0].quality   = quality;
 		nr_node->routes[0].obs_count = obs_count;
 		nr_node->routes[0].neighbour = nr_neigh;
-			
+
 		save_flags(flags);
 		cli();
 
@@ -139,15 +143,15 @@
 		nr_node_list  = nr_node;
 
 		restore_flags(flags);
-		
+
 		nr_neigh->count++;
 
 		return 0;
-	} else {
-		if (nr_node->mnemonic[0] == '\0')
-			strcpy(nr_node->mnemonic, mnemonic);
 	}
 
+	if (quality != 0)
+		strcpy(nr_node->mnemonic, mnemonic);
+
 	for (found = 0, i = 0; i < nr_node->count; i++) {
 		if (nr_node->routes[i].neighbour == nr_neigh) {
 			nr_node->routes[i].quality   = quality;
@@ -166,7 +170,7 @@
 			nr_node->routes[0].quality   = quality;
 			nr_node->routes[0].obs_count = obs_count;
 			nr_node->routes[0].neighbour = nr_neigh;
-				
+
 			nr_node->which++;
 			nr_node->count++;
 			nr_neigh->count++;
@@ -174,10 +178,10 @@
 			/* It must be better than the worst */
 			if (quality > nr_node->routes[2].quality) {
 				nr_node->routes[2].neighbour->count--;
-				
+
 				if (nr_node->routes[2].neighbour->count == 0 && !nr_node->routes[2].neighbour->locked)
 					nr_remove_neigh(nr_node->routes[2].neighbour);
-			
+
 				nr_node->routes[2].quality   = quality;
 				nr_node->routes[2].obs_count = obs_count;
 				nr_node->routes[2].neighbour = nr_neigh;
@@ -240,7 +244,7 @@
 {
 	struct nr_node *s;
 	unsigned long flags;
-	
+
 	save_flags(flags);
 	cli();
 
@@ -307,7 +311,7 @@
 	struct nr_node  *nr_node;
 	struct nr_neigh *nr_neigh;
 	int i;
-	
+
 	for (nr_node = nr_node_list; nr_node != NULL; nr_node = nr_node->next)
 		if (ax25cmp(callsign, &nr_node->callsign) == 0)
 			break;
@@ -319,7 +323,7 @@
 			break;
 
 	if (nr_neigh == NULL) return -EINVAL;
-	
+
 	for (i = 0; i < nr_node->count; i++) {
 		if (nr_node->routes[i].neighbour == nr_neigh) {
 			nr_neigh->count--;
@@ -328,7 +332,7 @@
 				nr_remove_neigh(nr_neigh);
 				
 			nr_node->count--;
-			
+
 			if (nr_node->count == 0) {
 				nr_remove_node(nr_node);
 			} else {
@@ -375,6 +379,7 @@
 	nr_neigh->locked   = 1;
 	nr_neigh->count    = 0;
 	nr_neigh->number   = nr_neigh_no++;
+	nr_neigh->failed   = 0;
 
 	if (ax25_digi != NULL && ax25_digi->ndigi > 0) {
 		if ((nr_neigh->digipeat = kmalloc(sizeof(*ax25_digi), GFP_KERNEL)) == NULL) {
@@ -386,7 +391,7 @@
 
 	save_flags(flags);
 	cli();
-			
+
 	nr_neigh->next = nr_neigh_list;
 	nr_neigh_list  = nr_neigh;
 
@@ -443,9 +448,9 @@
 
 			case 1:		/* From 1 -> 0 */
 				nr_neigh = s->routes[i].neighbour;
-				
+
 				nr_neigh->count--;
-						
+
 				if (nr_neigh->count == 0 && !nr_neigh->locked)
 					nr_remove_neigh(nr_neigh);
 
@@ -487,14 +492,14 @@
 	while (nr_neigh != NULL) {
 		s        = nr_neigh;
 		nr_neigh = nr_neigh->next;
-		
+
 		if (s->dev == dev) {
 			nr_node = nr_node_list;
 
 			while (nr_node != NULL) {
 				t       = nr_node;
 				nr_node = nr_node->next;
-				
+
 				for (i = 0; i < t->count; i++) {
 					if (t->routes[i].neighbour == s) {
 						t->count--;
@@ -509,11 +514,11 @@
 						}
 					}
 				}
-				
+
 				if (t->count <= 0)
 					nr_remove_node(t);
 			}
-			
+
 			nr_remove_neigh(s);
 		}
 	}
@@ -561,7 +566,7 @@
 	for (dev = dev_base; dev != NULL; dev = dev->next)
 		if ((dev->flags & IFF_UP) && dev->type == ARPHRD_NETROM && ax25cmp(addr, (ax25_address *)dev->dev_addr) == 0)
 			return dev;
-	
+
 	return NULL;
 }
 
@@ -658,9 +663,11 @@
 	for (nr_neigh = nr_neigh_list; nr_neigh != NULL; nr_neigh = nr_neigh->next)
 		if (ax25cmp(&nr_neigh->callsign, callsign) == 0 && nr_neigh->dev == dev)
 			break;
-			
+
 	if (nr_neigh == NULL) return;
-	
+
+	if (++nr_neigh->failed < sysctl_netrom_link_fails_count) return;
+
 	for (nr_node = nr_node_list; nr_node != NULL; nr_node = nr_node->next)
 		if (nr_node->which < nr_node->count && nr_node->routes[nr_node->which].neighbour == nr_neigh)
 			nr_node->which++;
@@ -677,7 +684,7 @@
 	struct nr_node  *nr_node;
 	struct device *dev;
 	unsigned char *dptr;
-	
+
 #ifdef CONFIG_FIREWALL
 	if (ax25 != NULL && call_in_firewall(PF_NETROM, skb->dev, skb->data, NULL) != FW_ACCEPT)
 		return 0;
@@ -786,16 +793,17 @@
 
 	cli();
 
-	len += sprintf(buffer, "addr  callsign  dev  qual lock count digipeaters\n");
+	len += sprintf(buffer, "addr  callsign  dev  qual lock count failed digipeaters\n");
 
 	for (nr_neigh = nr_neigh_list; nr_neigh != NULL; nr_neigh = nr_neigh->next) {
-		len += sprintf(buffer + len, "%05d %-9s %-4s  %3d    %d   %3d",
+		len += sprintf(buffer + len, "%05d %-9s %-4s  %3d    %d   %3d    %3d",
 			nr_neigh->number,
 			ax2asc(&nr_neigh->callsign),
 			nr_neigh->dev ? nr_neigh->dev->name : "???",
 			nr_neigh->quality,
 			nr_neigh->locked,
-			nr_neigh->count);
+			nr_neigh->count,
+			nr_neigh->failed);
 
 		if (nr_neigh->digipeat != NULL) {
 			for (i = 0; i < nr_neigh->digipeat->ndigi; i++)
@@ -810,7 +818,7 @@
 			len   = 0;
 			begin = pos;
 		}
-		
+
 		if (pos > offset + length)
 			break;
 	}