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Commit f032537f authored by David S. Miller's avatar David S. Miller
Browse files

Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge 

Included changes:

* major skb->data pointer usage fix
* interval version update
* added get_ethtool_stats() support
* endianess clean up
* routing protocol API improvement wrt TT commit code
* fix locking in hash table code
* minor cleanups and fixes
parents 6fac2625 dafe94b2

Documentation/networking/batman-adv.txt

+5 −0
Original line number Diff line number Diff line
@@ -211,6 +211,11 @@ The debug output can be changed at runtime using the file 


will enable debug messages for when routes change.



Counters for different types of packets entering and leaving the

batman-adv module are available through ethtool:



# ethtool --statistics bat0





BATCTL

------

net/batman-adv/bat_debugfs.c

+7 −4
Original line number Diff line number Diff line
@@ -195,13 +195,13 @@ static int debug_log_setup(struct bat_priv *bat_priv) 


	d = debugfs_create_file("log", S_IFREG | S_IRUSR,

				bat_priv->debug_dir, bat_priv, &log_fops);

	if (d)

	if (!d)

		goto err;



	return 0;



err:

	return 1;

	return -ENOMEM;

}



static void debug_log_cleanup(struct bat_priv *bat_priv)
@@ -348,8 +348,11 @@ int debugfs_add_meshif(struct net_device *dev) 
	if (!bat_priv->debug_dir)

		goto out;



	bat_socket_setup(bat_priv);

	debug_log_setup(bat_priv);

	if (bat_socket_setup(bat_priv) < 0)

		goto rem_attr;



	if (debug_log_setup(bat_priv) < 0)

		goto rem_attr;



	for (bat_debug = mesh_debuginfos; *bat_debug; ++bat_debug) {

		file = debugfs_create_file(((*bat_debug)->attr).name,

net/batman-adv/bat_iv_ogm.c

+34 −29
Original line number Diff line number Diff line
@@ -34,11 +34,12 @@ static struct neigh_node *bat_iv_ogm_neigh_new(struct hard_iface *hard_iface, 
					       const uint8_t *neigh_addr,

					       struct orig_node *orig_node,

					       struct orig_node *orig_neigh,

					       uint32_t seqno)

					       __be32 seqno)

{

	struct neigh_node *neigh_node;



	neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr, seqno);

	neigh_node = batadv_neigh_node_new(hard_iface, neigh_addr,

					   ntohl(seqno));

	if (!neigh_node)

		goto out;
@@ -59,7 +60,7 @@ static int bat_iv_ogm_iface_enable(struct hard_iface *hard_iface) 
{

	struct batman_ogm_packet *batman_ogm_packet;

	uint32_t random_seqno;

	int res = -1;

	int res = -ENOMEM;



	/* randomize initial seqno to avoid collision */

	get_random_bytes(&random_seqno, sizeof(random_seqno));
@@ -196,9 +197,13 @@ static void bat_iv_ogm_send_to_if(struct forw_packet *forw_packet, 


	/* create clone because function is called more than once */

	skb = skb_clone(forw_packet->skb, GFP_ATOMIC);

	if (skb)

	if (skb) {

		batadv_inc_counter(bat_priv, BAT_CNT_MGMT_TX);

		batadv_add_counter(bat_priv, BAT_CNT_MGMT_TX_BYTES,

				   skb->len + ETH_HLEN);

		send_skb_packet(skb, hard_iface, broadcast_addr);

	}

}



/* send a batman ogm packet */

static void bat_iv_ogm_emit(struct forw_packet *forw_packet)
@@ -542,9 +547,6 @@ static void bat_iv_ogm_forward(struct orig_node *orig_node, 
		"Forwarding packet: tq: %i, ttl: %i\n",

		batman_ogm_packet->tq, batman_ogm_packet->header.ttl);



	batman_ogm_packet->seqno = htonl(batman_ogm_packet->seqno);

	batman_ogm_packet->tt_crc = htons(batman_ogm_packet->tt_crc);



	/* switch of primaries first hop flag when forwarding */

	batman_ogm_packet->flags &= ~PRIMARIES_FIRST_HOP;

	if (is_single_hop_neigh)
@@ -557,26 +559,31 @@ static void bat_iv_ogm_forward(struct orig_node *orig_node, 
			     if_incoming, 0, bat_iv_ogm_fwd_send_time());

}



static void bat_iv_ogm_schedule(struct hard_iface *hard_iface,

				int tt_num_changes)

static void bat_iv_ogm_schedule(struct hard_iface *hard_iface)

{

	struct bat_priv *bat_priv = netdev_priv(hard_iface->soft_iface);

	struct batman_ogm_packet *batman_ogm_packet;

	struct hard_iface *primary_if;

	int vis_server;

	int vis_server, tt_num_changes = 0;



	vis_server = atomic_read(&bat_priv->vis_mode);

	primary_if = primary_if_get_selected(bat_priv);



	if (hard_iface == primary_if)

		tt_num_changes = batadv_tt_append_diff(bat_priv,

						       &hard_iface->packet_buff,

						       &hard_iface->packet_len,

						       BATMAN_OGM_HLEN);



	batman_ogm_packet = (struct batman_ogm_packet *)hard_iface->packet_buff;



	/* change sequence number to network order */

	batman_ogm_packet->seqno =

			htonl((uint32_t)atomic_read(&hard_iface->seqno));

	atomic_inc(&hard_iface->seqno);



	batman_ogm_packet->ttvn = atomic_read(&bat_priv->ttvn);

	batman_ogm_packet->tt_crc = htons((uint16_t)

						atomic_read(&bat_priv->tt_crc));

	batman_ogm_packet->tt_crc = htons(bat_priv->tt_crc);

	if (tt_num_changes >= 0)

		batman_ogm_packet->tt_num_changes = tt_num_changes;
@@ -592,8 +599,6 @@ static void bat_iv_ogm_schedule(struct hard_iface *hard_iface, 
	else

		batman_ogm_packet->gw_flags = NO_FLAGS;



	atomic_inc(&hard_iface->seqno);



	slide_own_bcast_window(hard_iface);

	bat_iv_ogm_queue_add(bat_priv, hard_iface->packet_buff,

			     hard_iface->packet_len, hard_iface, 1,
@@ -721,7 +726,7 @@ static void bat_iv_ogm_orig_update(struct bat_priv *bat_priv, 
		tt_update_orig(bat_priv, orig_node, tt_buff,

			       batman_ogm_packet->tt_num_changes,

			       batman_ogm_packet->ttvn,

			       batman_ogm_packet->tt_crc);

			       ntohs(batman_ogm_packet->tt_crc));



	if (orig_node->gw_flags != batman_ogm_packet->gw_flags)

		gw_node_update(bat_priv, orig_node,
@@ -868,13 +873,14 @@ static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, 
	int32_t seq_diff;

	int need_update = 0;

	int set_mark, ret = -1;

	uint32_t seqno = ntohl(batman_ogm_packet->seqno);



	orig_node = get_orig_node(bat_priv, batman_ogm_packet->orig);

	if (!orig_node)

		return 0;



	spin_lock_bh(&orig_node->ogm_cnt_lock);

	seq_diff = batman_ogm_packet->seqno - orig_node->last_real_seqno;

	seq_diff = seqno - orig_node->last_real_seqno;



	/* signalize caller that the packet is to be dropped. */

	if (!hlist_empty(&orig_node->neigh_list) &&
@@ -888,7 +894,7 @@ static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, 


		is_duplicate |= bat_test_bit(tmp_neigh_node->real_bits,

					     orig_node->last_real_seqno,

					     batman_ogm_packet->seqno);

					     seqno);



		if (compare_eth(tmp_neigh_node->addr, ethhdr->h_source) &&

		    (tmp_neigh_node->if_incoming == if_incoming))
@@ -910,8 +916,8 @@ static int bat_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, 
	if (need_update) {

		bat_dbg(DBG_BATMAN, bat_priv,

			"updating last_seqno: old %u, new %u\n",

			orig_node->last_real_seqno, batman_ogm_packet->seqno);

		orig_node->last_real_seqno = batman_ogm_packet->seqno;

			orig_node->last_real_seqno, seqno);

		orig_node->last_real_seqno = seqno;

	}



	ret = is_duplicate;
@@ -967,8 +973,8 @@ static void bat_iv_ogm_process(const struct ethhdr *ethhdr, 
		"Received BATMAN packet via NB: %pM, IF: %s [%pM] (from OG: %pM, via prev OG: %pM, seqno %u, ttvn %u, crc %u, changes %u, td %d, TTL %d, V %d, IDF %d)\n",

		ethhdr->h_source, if_incoming->net_dev->name,

		if_incoming->net_dev->dev_addr, batman_ogm_packet->orig,

		batman_ogm_packet->prev_sender, batman_ogm_packet->seqno,

		batman_ogm_packet->ttvn, batman_ogm_packet->tt_crc,

		batman_ogm_packet->prev_sender, ntohl(batman_ogm_packet->seqno),

		batman_ogm_packet->ttvn, ntohs(batman_ogm_packet->tt_crc),

		batman_ogm_packet->tt_num_changes, batman_ogm_packet->tq,

		batman_ogm_packet->header.ttl,

		batman_ogm_packet->header.version, has_directlink_flag);
@@ -1039,7 +1045,7 @@ static void bat_iv_ogm_process(const struct ethhdr *ethhdr, 
			word = &(orig_neigh_node->bcast_own[offset]);

			bat_set_bit(word,

				    if_incoming_seqno -

						batman_ogm_packet->seqno - 2);

					ntohl(batman_ogm_packet->seqno) - 2);

			orig_neigh_node->bcast_own_sum[if_incoming->if_num] =

				bitmap_weight(word, TQ_LOCAL_WINDOW_SIZE);

			spin_unlock_bh(&orig_neigh_node->ogm_cnt_lock);
@@ -1132,7 +1138,7 @@ static void bat_iv_ogm_process(const struct ethhdr *ethhdr, 
	 * seqno and similar ttl as the non-duplicate */

	if (is_bidirectional &&

	    (!is_duplicate ||

	     ((orig_node->last_real_seqno == batman_ogm_packet->seqno) &&

	     ((orig_node->last_real_seqno == ntohl(batman_ogm_packet->seqno)) &&

	      (orig_node->last_ttl - 3 <= batman_ogm_packet->header.ttl))))

		bat_iv_ogm_orig_update(bat_priv, orig_node, ethhdr,

				       batman_ogm_packet, if_incoming,
@@ -1204,6 +1210,10 @@ static int bat_iv_ogm_receive(struct sk_buff *skb, 
	if (bat_priv->bat_algo_ops->bat_ogm_emit != bat_iv_ogm_emit)

		return NET_RX_DROP;



	batadv_inc_counter(bat_priv, BAT_CNT_MGMT_RX);

	batadv_add_counter(bat_priv, BAT_CNT_MGMT_RX_BYTES,

			   skb->len + ETH_HLEN);



	packet_len = skb_headlen(skb);

	ethhdr = (struct ethhdr *)skb_mac_header(skb);

	packet_buff = skb->data;
@@ -1211,11 +1221,6 @@ static int bat_iv_ogm_receive(struct sk_buff *skb, 


	/* unpack the aggregated packets and process them one by one */

	do {

		/* network to host order for our 32bit seqno and the

		   orig_interval */

		batman_ogm_packet->seqno = ntohl(batman_ogm_packet->seqno);

		batman_ogm_packet->tt_crc = ntohs(batman_ogm_packet->tt_crc);



		tt_buff = packet_buff + buff_pos + BATMAN_OGM_HLEN;



		bat_iv_ogm_process(ethhdr, batman_ogm_packet,
@@ -1234,7 +1239,7 @@ static int bat_iv_ogm_receive(struct sk_buff *skb, 
}



static struct bat_algo_ops batman_iv __read_mostly = {

	.name = "BATMAN IV",

	.name = "BATMAN_IV",

	.bat_iface_enable = bat_iv_ogm_iface_enable,

	.bat_iface_disable = bat_iv_ogm_iface_disable,

	.bat_iface_update_mac = bat_iv_ogm_iface_update_mac,

net/batman-adv/bat_sysfs.c

+2 −2
Original line number Diff line number Diff line
@@ -445,7 +445,7 @@ BAT_ATTR_SIF_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, TQ_MAX_VALUE, 
static BAT_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, show_gw_bwidth,

		store_gw_bwidth);

#ifdef CONFIG_BATMAN_ADV_DEBUG

BAT_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, 15, NULL);

BAT_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, DBG_ALL, NULL);

#endif



static struct bat_attribute *mesh_attrs[] = {
@@ -680,7 +680,7 @@ void sysfs_del_hardif(struct kobject **hardif_obj) 
int throw_uevent(struct bat_priv *bat_priv, enum uev_type type,

		 enum uev_action action, const char *data)

{

	int ret = -1;

	int ret = -ENOMEM;

	struct hard_iface *primary_if = NULL;

	struct kobject *bat_kobj;

	char *uevent_env[4] = { NULL, NULL, NULL, NULL };

net/batman-adv/bridge_loop_avoidance.c

+20 −7
Original line number Diff line number Diff line
@@ -258,7 +258,7 @@ static void bla_send_claim(struct bat_priv *bat_priv, uint8_t *mac, 
	struct net_device *soft_iface;

	uint8_t *hw_src;

	struct bla_claim_dst local_claim_dest;

	uint32_t zeroip = 0;

	__be32 zeroip = 0;



	primary_if = primary_if_get_selected(bat_priv);

	if (!primary_if)
@@ -506,11 +506,11 @@ static void bla_send_announce(struct bat_priv *bat_priv, 
			      struct backbone_gw *backbone_gw)

{

	uint8_t mac[ETH_ALEN];

	uint16_t crc;

	__be16 crc;



	memcpy(mac, announce_mac, 4);

	crc = htons(backbone_gw->crc);

	memcpy(&mac[4], (uint8_t *)&crc, 2);

	memcpy(&mac[4], &crc, 2);



	bla_send_claim(bat_priv, mac, backbone_gw->vid, CLAIM_TYPE_ANNOUNCE);
@@ -627,7 +627,7 @@ static int handle_announce(struct bat_priv *bat_priv, 


	/* handle as ANNOUNCE frame */

	backbone_gw->lasttime = jiffies;

	crc = ntohs(*((uint16_t *)(&an_addr[4])));

	crc = ntohs(*((__be16 *)(&an_addr[4])));



	bat_dbg(DBG_BLA, bat_priv,

		"handle_announce(): ANNOUNCE vid %d (sent by %pM)... CRC = %04x\n",
@@ -1127,6 +1127,14 @@ static void bla_periodic_work(struct work_struct *work) 
	bla_start_timer(bat_priv);

}



/* The hash for claim and backbone hash receive the same key because they

 * are getting initialized by hash_new with the same key. Reinitializing

 * them with to different keys to allow nested locking without generating

 * lockdep warnings

 */

static struct lock_class_key claim_hash_lock_class_key;

static struct lock_class_key backbone_hash_lock_class_key;



/* initialize all bla structures */

int bla_init(struct bat_priv *bat_priv)

{
@@ -1156,18 +1164,23 @@ int bla_init(struct bat_priv *bat_priv) 
	bat_priv->bcast_duplist_curr = 0;



	if (bat_priv->claim_hash)

		return 1;

		return 0;



	bat_priv->claim_hash = hash_new(128);

	bat_priv->backbone_hash = hash_new(32);



	if (!bat_priv->claim_hash || !bat_priv->backbone_hash)

		return -1;

		return -ENOMEM;



	batadv_hash_set_lock_class(bat_priv->claim_hash,

				   &claim_hash_lock_class_key);

	batadv_hash_set_lock_class(bat_priv->backbone_hash,

				   &backbone_hash_lock_class_key);



	bat_dbg(DBG_BLA, bat_priv, "bla hashes initialized\n");



	bla_start_timer(bat_priv);

	return 1;

	return 0;

}



/**