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batman-adv: Add the backbone gateway list to debugfs 

This is especially useful if there are no claims yet, but we still want
to know which gateways are using bridge loop avoidance in the network.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
This commit is contained in:
Simon Wunderlich 2012-06-18 18:39:26 +02:00 committed by Antonio Quartulli
parent c70437289c
commit 536a23f119
4 changed files with 89 additions and 3 deletions
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7
Documentation/networking/batman-adv.txt
View File

@ -75,9 +75,10 @@ folder:
There is a special folder for debugging information:
# ls /sys/kernel/debug/batman_adv/bat0/
# bla_claim_table log socket transtable_local
# gateways originators transtable_global vis_data
# ls /sys/kernel/debug/batman_adv/bat0/
# bla_backbone_table log transtable_global
# bla_claim_table originators transtable_local
# gateways socket vis_data
Some of the files contain all sort of status information regard-
ing the mesh network. For example, you can view the table of

65
net/batman-adv/bridge_loop_avoidance.c
View File

@ -1616,3 +1616,68 @@ out:
batadv_hardif_free_ref(primary_if);
return ret;
}
int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
{
struct net_device *net_dev = (struct net_device *)seq->private;
struct batadv_priv *bat_priv = netdev_priv(net_dev);
struct batadv_hashtable *hash = bat_priv->backbone_hash;
struct batadv_backbone_gw *backbone_gw;
struct batadv_hard_iface *primary_if;
struct hlist_node *node;
struct hlist_head *head;
int secs, msecs;
uint32_t i;
bool is_own;
int ret = 0;
uint8_t *primary_addr;
primary_if = batadv_primary_if_get_selected(bat_priv);
if (!primary_if) {
ret = seq_printf(seq,
"BATMAN mesh %s disabled - please specify interfaces to enable it\n",
net_dev->name);
goto out;
}
if (primary_if->if_status != BATADV_IF_ACTIVE) {
ret = seq_printf(seq,
"BATMAN mesh %s disabled - primary interface not active\n",
net_dev->name);
goto out;
}
primary_addr = primary_if->net_dev->dev_addr;
seq_printf(seq,
"Backbones announced for the mesh %s (orig %pM, group id %04x)\n",
net_dev->name, primary_addr,
ntohs(bat_priv->claim_dest.group));
seq_printf(seq, " %-17s %-5s %-9s (%-4s)\n",
"Originator", "VID", "last seen", "CRC");
for (i = 0; i < hash->size; i++) {
head = &hash->table[i];
rcu_read_lock();
hlist_for_each_entry_rcu(backbone_gw, node, head, hash_entry) {
msecs = jiffies_to_msecs(jiffies -
backbone_gw->lasttime);
secs = msecs / 1000;
msecs = msecs % 1000;
is_own = batadv_compare_eth(backbone_gw->orig,
primary_addr);
if (is_own)
continue;
seq_printf(seq,
" * %pM on % 5d % 4i.%03is (%04x)\n",
backbone_gw->orig, backbone_gw->vid,
secs, msecs, backbone_gw->crc);
}
rcu_read_unlock();
}
out:
if (primary_if)
batadv_hardif_free_ref(primary_if);
return ret;
}

8
net/batman-adv/bridge_loop_avoidance.h
View File

@ -27,6 +27,8 @@ int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid);
int batadv_bla_is_backbone_gw(struct sk_buff *skb,
struct batadv_orig_node *orig_node, int hdr_size);
int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
void *offset);
int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, uint8_t *orig);
int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
struct batadv_bcast_packet *bcast_packet,
@ -65,6 +67,12 @@ static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
return 0;
}
static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
void *offset)
{
return 0;
}
static inline int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
uint8_t *orig)
{

12
net/batman-adv/debugfs.c
View File

@ -267,6 +267,15 @@ static int batadv_bla_claim_table_open(struct inode *inode, struct file *file)
return single_open(file, batadv_bla_claim_table_seq_print_text,
net_dev);
}
static int batadv_bla_backbone_table_open(struct inode *inode,
struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
return single_open(file, batadv_bla_backbone_table_seq_print_text,
net_dev);
}
#endif
static int batadv_transtable_local_open(struct inode *inode, struct file *file)
@ -305,6 +314,8 @@ static BATADV_DEBUGINFO(transtable_global, S_IRUGO,
batadv_transtable_global_open);
#ifdef CONFIG_BATMAN_ADV_BLA
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
static BATADV_DEBUGINFO(transtable_local, S_IRUGO,
batadv_transtable_local_open);
@ -316,6 +327,7 @@ static struct batadv_debuginfo *batadv_mesh_debuginfos[] = {
&batadv_debuginfo_transtable_global,
#ifdef CONFIG_BATMAN_ADV_BLA
&batadv_debuginfo_bla_claim_table,
&batadv_debuginfo_bla_backbone_table,
#endif
&batadv_debuginfo_transtable_local,
&batadv_debuginfo_vis_data,