1 files changed, 282 insertions, 13 deletions

diff --git a/drivers/staging/batman-adv/originator.c b/drivers/staging/batman-adv/originator.c
index 29c241119a3b..568aef8371be 100644
--- a/drivers/staging/batman-adv/originator.c
+++ b/drivers/staging/batman-adv/originator.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009 B.A.T.M.A.N. contributors:
+ * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
  *
@@ -26,6 +26,7 @@
 #include "hash.h"
 #include "translation-table.h"
 #include "routing.h"
+#include "hard-interface.h"
 
 static DECLARE_DELAYED_WORK(purge_orig_wq, purge_orig);
 
@@ -117,6 +118,8 @@ void free_orig_node(void *data)
  * address if it does not exits */
 struct orig_node *get_orig_node(uint8_t *addr)
 {
+	/* FIXME: each batman_if will be attached to a softif */
+	struct bat_priv *bat_priv = netdev_priv(soft_device);
 	struct orig_node *orig_node;
 	struct hashtable_t *swaphash;
 	int size;
@@ -126,7 +129,7 @@ struct orig_node *get_orig_node(uint8_t *addr)
 	if (orig_node != NULL)
 		return orig_node;
 
-	bat_dbg(DBG_BATMAN, "Creating new originator: %pM \n", addr);
+	bat_dbg(DBG_BATMAN, "Creating new originator: %pM\n", addr);
 
 	orig_node = kzalloc(sizeof(struct orig_node), GFP_ATOMIC);
 	if (!orig_node)
@@ -136,16 +139,19 @@ struct orig_node *get_orig_node(uint8_t *addr)
 
 	memcpy(orig_node->orig, addr, ETH_ALEN);
 	orig_node->router = NULL;
-	orig_node->batman_if = NULL;
 	orig_node->hna_buff = NULL;
+	orig_node->bcast_seqno_reset = jiffies - 1
+					- msecs_to_jiffies(RESET_PROTECTION_MS);
+	orig_node->batman_seqno_reset = jiffies - 1
+					- msecs_to_jiffies(RESET_PROTECTION_MS);
 
-	size = num_ifs * sizeof(TYPE_OF_WORD) * NUM_WORDS;
+	size = bat_priv->num_ifaces * sizeof(TYPE_OF_WORD) * NUM_WORDS;
 
 	orig_node->bcast_own = kzalloc(size, GFP_ATOMIC);
 	if (!orig_node->bcast_own)
 		goto free_orig_node;
 
-	size = num_ifs * sizeof(uint8_t);
+	size = bat_priv->num_ifaces * sizeof(uint8_t);
 	orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC);
 	if (!orig_node->bcast_own_sum)
 		goto free_bcast_own;
@@ -158,7 +164,7 @@ struct orig_node *get_orig_node(uint8_t *addr)
 
 		if (swaphash == NULL)
 			printk(KERN_ERR
-			       "batman-adv:Couldn't resize orig hash table \n");
+			       "batman-adv:Couldn't resize orig hash table\n");
 		else
 			orig_hash = swaphash;
 	}
@@ -182,16 +188,29 @@ static bool purge_orig_neighbors(struct orig_node *orig_node,
 
 	*best_neigh_node = NULL;
 
-
 	/* for all neighbors towards this originator ... */
 	list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) {
 		neigh_node = list_entry(list_pos, struct neigh_node, list);
 
-		if (time_after(jiffies,
+		if ((time_after(jiffies,
 			       (neigh_node->last_valid +
-				((PURGE_TIMEOUT * HZ) / 1000)))) {
-
-			bat_dbg(DBG_BATMAN, "neighbor timeout: originator %pM, neighbor: %pM, last_valid %lu\n", orig_node->orig, neigh_node->addr, (neigh_node->last_valid / HZ));
+				((PURGE_TIMEOUT * HZ) / 1000)))) ||
+		    (neigh_node->if_incoming->if_status ==
+						IF_TO_BE_REMOVED)) {
+
+			if (neigh_node->if_incoming->if_status ==
+							IF_TO_BE_REMOVED)
+				bat_dbg(DBG_BATMAN,
+					"neighbor purge: originator %pM, "
+					"neighbor: %pM, iface: %s\n",
+					orig_node->orig, neigh_node->addr,
+					neigh_node->if_incoming->dev);
+			else
+				bat_dbg(DBG_BATMAN,
+					"neighbor timeout: originator %pM, "
+					"neighbor: %pM, last_valid: %lu\n",
+					orig_node->orig, neigh_node->addr,
+					(neigh_node->last_valid / HZ));
 
 			neigh_purged = true;
 			list_del(list_pos);
@@ -205,7 +224,6 @@ static bool purge_orig_neighbors(struct orig_node *orig_node,
 	return neigh_purged;
 }
 
-
 static bool purge_orig_node(struct orig_node *orig_node)
 {
 	struct neigh_node *best_neigh_node;
@@ -224,6 +242,7 @@ static bool purge_orig_node(struct orig_node *orig_node)
 				      orig_node->hna_buff,
 				      orig_node->hna_buff_len);
 	}
+
 	return false;
 }
 
@@ -246,7 +265,257 @@ void purge_orig(struct work_struct *work)
 
 	spin_unlock_irqrestore(&orig_hash_lock, flags);
 
-	start_purge_timer();
+	/* if work == NULL we were not called by the timer
+	 * and thus do not need to re-arm the timer */
+	if (work)
+		start_purge_timer();
+}
+
+ssize_t orig_fill_buffer_text(struct net_device *net_dev, char *buff,
+			      size_t count, loff_t off)
+{
+	HASHIT(hashit);
+	struct bat_priv *bat_priv = netdev_priv(net_dev);
+	struct orig_node *orig_node;
+	struct neigh_node *neigh_node;
+	size_t hdr_len, tmp_len;
+	int batman_count = 0, bytes_written = 0;
+	unsigned long flags;
+	char orig_str[ETH_STR_LEN], router_str[ETH_STR_LEN];
+
+	if (!bat_priv->primary_if) {
+		if (off == 0)
+			return sprintf(buff,
+				     "BATMAN mesh %s disabled - "
+				     "please specify interfaces to enable it\n",
+				     net_dev->name);
+
+		return 0;
+	}
+
+	if (bat_priv->primary_if->if_status != IF_ACTIVE && off == 0)
+		return sprintf(buff,
+			       "BATMAN mesh %s "
+			       "disabled - primary interface not active\n",
+			       net_dev->name);
+	else if (bat_priv->primary_if->if_status != IF_ACTIVE)
+		return 0;
+
+	rcu_read_lock();
+	hdr_len = sprintf(buff,
+		   "  %-14s (%s/%i) %17s [%10s]: %20s "
+		   "... [B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%s (%s)]\n",
+		   "Originator", "#", TQ_MAX_VALUE, "Nexthop", "outgoingIF",
+		   "Potential nexthops", SOURCE_VERSION, REVISION_VERSION_STR,
+		   bat_priv->primary_if->dev, bat_priv->primary_if->addr_str,
+		   net_dev->name);
+	rcu_read_unlock();
+
+	if (off < hdr_len)
+		bytes_written = hdr_len;
+
+	spin_lock_irqsave(&orig_hash_lock, flags);
+
+	while (hash_iterate(orig_hash, &hashit)) {
+
+		orig_node = hashit.bucket->data;
+
+		if (!orig_node->router)
+			continue;
+
+		if (orig_node->router->tq_avg == 0)
+			continue;
+
+		/* estimated line length */
+		if (count < bytes_written + 200)
+			break;
+
+		addr_to_string(orig_str, orig_node->orig);
+		addr_to_string(router_str, orig_node->router->addr);
+
+		tmp_len = sprintf(buff + bytes_written,
+				  "%-17s  (%3i) %17s [%10s]:",
+				   orig_str, orig_node->router->tq_avg,
+				   router_str,
+				   orig_node->router->if_incoming->dev);
+
+		list_for_each_entry(neigh_node, &orig_node->neigh_list, list) {
+			addr_to_string(orig_str, neigh_node->addr);
+			tmp_len += sprintf(buff + bytes_written + tmp_len,
+					   " %17s (%3i)", orig_str,
+					   neigh_node->tq_avg);
+		}
+
+		tmp_len += sprintf(buff + bytes_written + tmp_len, "\n");
+
+		batman_count++;
+		hdr_len += tmp_len;
+
+		if (off >= hdr_len)
+			continue;
+
+		bytes_written += tmp_len;
+	}
+
+	spin_unlock_irqrestore(&orig_hash_lock, flags);
+
+	if ((batman_count == 0) && (off == 0))
+		bytes_written += sprintf(buff + bytes_written,
+					"No batman nodes in range ...\n");
+
+	return bytes_written;
+}
+
+static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
+{
+	void *data_ptr;
+
+	data_ptr = kmalloc(max_if_num * sizeof(TYPE_OF_WORD) * NUM_WORDS,
+			   GFP_ATOMIC);
+	if (!data_ptr) {
+		printk(KERN_ERR
+		       "batman-adv:Can't resize orig: out of memory\n");
+		return -1;
+	}
+
+	memcpy(data_ptr, orig_node->bcast_own,
+	       (max_if_num - 1) * sizeof(TYPE_OF_WORD) * NUM_WORDS);
+	kfree(orig_node->bcast_own);
+	orig_node->bcast_own = data_ptr;
+
+	data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
+	if (!data_ptr) {
+		printk(KERN_ERR
+		       "batman-adv:Can't resize orig: out of memory\n");
+		return -1;
+	}
+
+	memcpy(data_ptr, orig_node->bcast_own_sum,
+	       (max_if_num - 1) * sizeof(uint8_t));
+	kfree(orig_node->bcast_own_sum);
+	orig_node->bcast_own_sum = data_ptr;
+
+	return 0;
+}
+
+int orig_hash_add_if(struct batman_if *batman_if, int max_if_num)
+{
+	struct orig_node *orig_node;
+	HASHIT(hashit);
+
+	/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
+	 * if_num */
+	spin_lock(&orig_hash_lock);
+
+	while (hash_iterate(orig_hash, &hashit)) {
+		orig_node = hashit.bucket->data;
+
+		if (orig_node_add_if(orig_node, max_if_num) == -1)
+			goto err;
+	}
+
+	spin_unlock(&orig_hash_lock);
+	return 0;
+
+err:
+	spin_unlock(&orig_hash_lock);
+	return -ENOMEM;
+}
+
+static int orig_node_del_if(struct orig_node *orig_node,
+		     int max_if_num, int del_if_num)
+{
+	void *data_ptr = NULL;
+	int chunk_size;
+
+	/* last interface was removed */
+	if (max_if_num == 0)
+		goto free_bcast_own;
+
+	chunk_size = sizeof(TYPE_OF_WORD) * NUM_WORDS;
+	data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC);
+	if (!data_ptr) {
+		printk(KERN_ERR
+		       "batman-adv:Can't resize orig: out of memory\n");
+		return -1;
+	}
+
+	/* copy first part */
+	memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
+
+	/* copy second part */
+	memcpy(data_ptr,
+	       orig_node->bcast_own + ((del_if_num + 1) * chunk_size),
+	       (max_if_num - del_if_num) * chunk_size);
+
+free_bcast_own:
+	kfree(orig_node->bcast_own);
+	orig_node->bcast_own = data_ptr;
+
+	if (max_if_num == 0)
+		goto free_own_sum;
+
+	data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
+	if (!data_ptr) {
+		printk(KERN_ERR
+		       "batman-adv:Can't resize orig: out of memory\n");
+		return -1;
+	}
+
+	memcpy(data_ptr, orig_node->bcast_own_sum,
+	       del_if_num * sizeof(uint8_t));
+
+	memcpy(data_ptr,
+	       orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)),
+	       (max_if_num - del_if_num) * sizeof(uint8_t));
+
+free_own_sum:
+	kfree(orig_node->bcast_own_sum);
+	orig_node->bcast_own_sum = data_ptr;
+
+	return 0;
 }
 
+int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
+{
+	struct batman_if *batman_if_tmp;
+	struct orig_node *orig_node;
+	HASHIT(hashit);
+	int ret;
+
+	/* resize all orig nodes because orig_node->bcast_own(_sum) depend on
+	 * if_num */
+	spin_lock(&orig_hash_lock);
+
+	while (hash_iterate(orig_hash, &hashit)) {
+		orig_node = hashit.bucket->data;
+
+		ret = orig_node_del_if(orig_node, max_if_num,
+				       batman_if->if_num);
+
+		if (ret == -1)
+			goto err;
+	}
+
+	/* renumber remaining batman interfaces _inside_ of orig_hash_lock */
+	rcu_read_lock();
+	list_for_each_entry_rcu(batman_if_tmp, &if_list, list) {
+		if (batman_if_tmp->if_status == IF_NOT_IN_USE)
+			continue;
+
+		if (batman_if == batman_if_tmp)
+			continue;
 
+		if (batman_if_tmp->if_num > batman_if->if_num)
+			batman_if_tmp->if_num--;
+	}
+	rcu_read_unlock();
+
+	batman_if->if_num = -1;
+	spin_unlock(&orig_hash_lock);
+	return 0;
+
+err:
+	spin_unlock(&orig_hash_lock);
+	return -ENOMEM;
+}