Hi, Sven.
How did you connect? Using serial console or using lan (from output I would
guess serial console).
Yes, it's serial console.
Does the hang always happen?
Yes.
Can you add printks in hard-interface.c around the call of
hardif_remove_interface inside hard_if_event to check if it stops inside that
function and if it does then please try to add more printks inside of
hardif_remove_interface and hardif_disable_interface.
I added printk() in hard-interface.c and soft-interface.c.
This is it.
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r...@openwrt:/# cd /etc/config/
r...@openwrt:/etc/config# cat batman-adv
config 'mesh' 'bat0'
option 'interfaces' 'wlan0'
option 'orig_interval'
option 'log_level'
option 'aggregate_ogm'
option 'vis_mode'
r...@openwrt:/etc/config# cat network
# Copyright (C) 2006 OpenWrt.org
config interface loopback
option ifname lo
option proto static
option ipaddr 127.0.0.1
option netmask 255.0.0.0
config interface lan
option ifname 'eth0 eth1 bat0'
option type bridge
option proto static
option ipaddr 192.168.2.12
option netmask 255.255.255.0
r...@openwrt:/etc/config# cat wireless
config wifi-device radio0
option type mac80211
option channel 1
option macaddr 00:0b:6b:2d:f4:91
option hwmode 11g
# REMOVE THIS LINE TO ENABLE WIFI:
# option disabled 1
config wifi-iface
option device radio0
# option network lan
option mode adhoc
option ssid mesh1
option encryption none
config wifi-device radio1
option type mac80211
option channel 6
option macaddr 00:0b:6b:2c:15:e3
option hwmode 11g
# REMOVE THIS LINE TO ENABLE WIFI:
# option disabled 1
config wifi-iface
option device radio1
# option network lan
option mode adhoc
option ssid mesh2
option encryption none
r...@openwrt:/etc/config# /etc/init.d/network restart
br-lan: port 3(bat0) entering disabled state
br-lan: port 1(eth0) entering disabled state
device bat0 left promiscuous mode
br-lan: port 3(bat0) entering disabled state
device eth1 left promiscuous mode
br-lan: port 2(eth1) entering disabled state
device eth0 left promiscuous mode
br-lan: port 1(eth0) entering disabled state
enter hardif_remove_interface
1 hardif_remove_interface
2 hardif_remove_interface
3 hardif_remove_interface
4 hardif_remove_interface
5 hardif_remove_interface
6 hardif_remove_interface
exit hardif_remove_interface
eth0: link down
device eth0 entered promiscuous mode
eth0: link up, speed 100 Mb/s, full duplex
br-lan: port 1(eth0) entering forwarding state
device eth1 entered promiscuous mode
device bat0 entered promiscuous mode
br-lan: port 3(bat0) entering forwarding state
batman_adv: bat0: Interface deactivated: wlan0
enter hardif_remove_interface
enter hardif_disable_interface
batman_adv: bat0: Removing interface: wlan0
1 hardif_disable_interface
2 hardif_disable_interface
3 hardif_disable_interface
4 hardif_disable_interface
5 hardif_disable_interface
6 hardif_disable_interface
7 hardif_disable_interface
8 hardif_disable_interface
9 hardif_disable_interface
10 hardif_disable_interface
enter softif_destroy
1 softif_destroy
2 softif_destroy
3 softif_destroy
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<hard-interface.c>
void hardif_disable_interface(struct batman_if *batman_if)
{
printk(KERN_ALERT "enter hardif_disable_interface\n");
struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
if (batman_if->if_status == IF_ACTIVE)
hardif_deactivate_interface(batman_if);
if (batman_if->if_status != IF_INACTIVE)
return;
bat_info(batman_if->soft_iface, "Removing interface: %s\n",
batman_if->net_dev->name);
printk(KERN_ALERT "1 hardif_disable_interface\n");
dev_remove_pack(&batman_if->batman_adv_ptype);
printk(KERN_ALERT "2 hardif_disable_interface\n");
if (batman_if->if_status != IF_INACTIVE)
return;
bat_info(batman_if->soft_iface, "Removing interface: %s\n",
batman_if->net_dev->name);
printk(KERN_ALERT "1 hardif_disable_interface\n");
dev_remove_pack(&batman_if->batman_adv_ptype);
printk(KERN_ALERT "2 hardif_disable_interface\n");
bat_priv->num_ifaces--;
printk(KERN_ALERT "3 hardif_disable_interface\n");
orig_hash_del_if(batman_if, bat_priv->num_ifaces);
printk(KERN_ALERT "4 hardif_disable_interface\n");
if (batman_if == bat_priv->primary_if)
set_primary_if(bat_priv,
get_active_batman_if(batman_if->soft_iface));
printk(KERN_ALERT "5 hardif_disable_interface\n");
kfree(batman_if->packet_buff);
printk(KERN_ALERT "6 hardif_disable_interface\n");
batman_if->packet_buff = NULL;
printk(KERN_ALERT "7 hardif_disable_interface\n");
batman_if->if_status = IF_NOT_IN_USE;
/* delete all references to this batman_if */
purge_orig_ref(bat_priv);
printk(KERN_ALERT "8 hardif_disable_interface\n");
purge_outstanding_packets(bat_priv, batman_if);
printk(KERN_ALERT "9 hardif_disable_interface\n");
dev_put(batman_if->soft_iface);
printk(KERN_ALERT "10 hardif_disable_interface\n");
/* nobody uses this interface anymore */
if (!bat_priv->num_ifaces)
softif_destroy(batman_if->soft_iface);
printk(KERN_ALERT "11 hardif_disable_interface\n");
batman_if->soft_iface = NULL;
printk(KERN_ALERT "exit hardif_disable_interface\n");
}
static void hardif_remove_interface(struct batman_if *batman_if)
{
printk(KERN_ALERT "enter hardif_remove_interface\n");
/* first deactivate interface */
if (batman_if->if_status != IF_NOT_IN_USE)
hardif_disable_interface(batman_if);
printk(KERN_ALERT "1 hardif_remove_interface\n");
if (batman_if->if_status != IF_NOT_IN_USE)
return;
printk(KERN_ALERT "2 hardif_remove_interface\n");
batman_if->if_status = IF_TO_BE_REMOVED;
printk(KERN_ALERT "3 hardif_remove_interface\n");
list_del_rcu(&batman_if->list);
printk(KERN_ALERT "4 hardif_remove_interface\n");
sysfs_del_hardif(&batman_if->hardif_obj);
printk(KERN_ALERT "5 hardif_remove_interface\n");
dev_put(batman_if->net_dev);
printk(KERN_ALERT "6 hardif_remove_interface\n");
call_rcu(&batman_if->rcu, hardif_free_interface);
printk(KERN_ALERT "exit hardif_remove_interface\n");
}
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soft-interface.c
void softif_destroy(struct net_device *soft_iface)
{
printk(KERN_ALERT "enter softif_destroy\n");
debugfs_del_meshif(soft_iface);
printk(KERN_ALERT "1 softif_destroy\n");
sysfs_del_meshif(soft_iface);
printk(KERN_ALERT "2 softif_destroy\n");
mesh_free(soft_iface);
printk(KERN_ALERT "3 softif_destroy\n");
unregister_netdev(soft_iface);
printk(KERN_ALERT "exit softif_destroy\n");
}
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"exit softif_destroy\n" is not printed out.
unregister_netdev?
Thanks in advance.
Kazuki Shimada
