Commit f1e0b5b4 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:
- minimal fixes to the packet layout to avoid the __packed attribute when not
  needed
- new packet type called UNICAST_4ADDR: in this packet it is possible to find
  both source and destination node (in the classic UNICAST header only the
  destination field exists).
- a new feature: Distributed ARP Table (D.A.T.). It aims to reduce ARP lookups
  latency by means of a simil-DHT approach.
parents b20b6d97 9affec6b

Documentation/networking/batman-adv.txt

+2 −1
Original line number Diff line number Diff line
@@ -203,7 +203,8 @@ abled during run time. Following log_levels are defined: 
2 - Enable messages related to route added / changed / deleted

4 - Enable messages related to translation table operations

8 - Enable messages related to bridge loop avoidance

15 - enable all messages

16 - Enable messaged related to DAT, ARP snooping and parsing

31 - Enable all messages



The debug output can be changed at runtime  using  the  file

/sys/class/net/bat0/mesh/log_level. e.g.

net/batman-adv/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -25,6 +25,16 @@ config BATMAN_ADV_BLA 
	  more than one mesh node in the same LAN, you can safely remove

	  this feature and save some space.



config BATMAN_ADV_DAT

	bool "Distributed ARP Table"

	depends on BATMAN_ADV && INET

	default n

	help

	  This option enables DAT (Distributed ARP Table), a DHT based

	  mechanism that increases ARP reliability on sparse wireless

	  mesh networks. If you think that your network does not need

	  this option you can safely remove it and save some space.



config BATMAN_ADV_DEBUG

	bool "B.A.T.M.A.N. debugging"

	depends on BATMAN_ADV

net/batman-adv/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ batman-adv-y += bat_iv_ogm.o 
batman-adv-y += bitarray.o

batman-adv-$(CONFIG_BATMAN_ADV_BLA) += bridge_loop_avoidance.o

batman-adv-y += debugfs.o

batman-adv-$(CONFIG_BATMAN_ADV_DAT) += distributed-arp-table.o

batman-adv-y += gateway_client.o

batman-adv-y += gateway_common.o

batman-adv-y += hard-interface.o

net/batman-adv/bat_iv_ogm.c

+5 −3
Original line number Diff line number Diff line
@@ -411,9 +411,11 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, 


	if ((atomic_read(&bat_priv->aggregated_ogms)) &&

	    (packet_len < BATADV_MAX_AGGREGATION_BYTES))

		skb_size = BATADV_MAX_AGGREGATION_BYTES + ETH_HLEN;

		skb_size = BATADV_MAX_AGGREGATION_BYTES;

	else

		skb_size = packet_len + ETH_HLEN;

		skb_size = packet_len;



	skb_size += ETH_HLEN + NET_IP_ALIGN;



	forw_packet_aggr->skb = dev_alloc_skb(skb_size);

	if (!forw_packet_aggr->skb) {
@@ -422,7 +424,7 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, 
		kfree(forw_packet_aggr);

		goto out;

	}

	skb_reserve(forw_packet_aggr->skb, ETH_HLEN);

	skb_reserve(forw_packet_aggr->skb, ETH_HLEN + NET_IP_ALIGN);



	INIT_HLIST_NODE(&forw_packet_aggr->list);

net/batman-adv/debugfs.c

+20 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 
#include "vis.h"

#include "icmp_socket.h"

#include "bridge_loop_avoidance.h"

#include "distributed-arp-table.h"



static struct dentry *batadv_debugfs;
@@ -280,6 +281,19 @@ static int batadv_bla_backbone_table_open(struct inode *inode, 


#endif



#ifdef CONFIG_BATMAN_ADV_DAT

/**

 * batadv_dat_cache_open - Prepare file handler for reads from dat_chache

 * @inode: inode which was opened

 * @file: file handle to be initialized

 */

static int batadv_dat_cache_open(struct inode *inode, struct file *file)

{

	struct net_device *net_dev = (struct net_device *)inode->i_private;

	return single_open(file, batadv_dat_cache_seq_print_text, net_dev);

}

#endif



static int batadv_transtable_local_open(struct inode *inode, struct file *file)

{

	struct net_device *net_dev = (struct net_device *)inode->i_private;
@@ -319,6 +333,9 @@ static BATADV_DEBUGINFO(bla_claim_table, S_IRUGO, batadv_bla_claim_table_open); 
static BATADV_DEBUGINFO(bla_backbone_table, S_IRUGO,

			batadv_bla_backbone_table_open);

#endif

#ifdef CONFIG_BATMAN_ADV_DAT

static BATADV_DEBUGINFO(dat_cache, S_IRUGO, batadv_dat_cache_open);

#endif

static BATADV_DEBUGINFO(transtable_local, S_IRUGO,

			batadv_transtable_local_open);

static BATADV_DEBUGINFO(vis_data, S_IRUGO, batadv_vis_data_open);
@@ -330,6 +347,9 @@ static struct batadv_debuginfo *batadv_mesh_debuginfos[] = { 
#ifdef CONFIG_BATMAN_ADV_BLA

	&batadv_debuginfo_bla_claim_table,

	&batadv_debuginfo_bla_backbone_table,

#endif

#ifdef CONFIG_BATMAN_ADV_DAT

	&batadv_debuginfo_dat_cache,

#endif

	&batadv_debuginfo_transtable_local,

	&batadv_debuginfo_vis_data,

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