network stack: Fixed double mutex lock.

* device_removed() no longer uses get_device_interface() to avoid
the double locking.
* Introduced net_device_interface::busy member to avoid locking in
device_removed() for too long.
* This should fix #7252.

NetStack: Fix locking
Change the monitor_lock to be a recursive_lock, fixing #7039.
Notify_device_monitor acquires the monitor lock, then the
monitor unregisters itself, calling unregister_device_monitor, which
acquires the monitor lock again.

* Added a dedicated lock for the device monitors. This fixes a locking issue in
interface_protocol_send_data() which accessed the monitors unlocked.
* Changed SIOCCPACKETCAP to check if the device name matches the one used with
SIOCSPACKETCAP.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37845 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Reworked the complete stack to allow more than one address per network
interface - this caused quite a number of changes.
* Network interfaces, and its addresses are now reference counted (not yet
complete, though, InterfaceAddresses need to hold references to their
interface as well).
* There are two known regressions of this commit that I will fix later:
- you cannot remove interfaces anymore
- IPv4 multicast was broken anyway, but now it's disabled, too.
* Moved a device_interfaces.cpp|h out of interfaces.cpp.
* The datalink layer chain is now instantiated per domain per interface,
not just per interface anymore.
* When a buffer reaches the network layer, it has no known interface yet, ie.
the ipv4|6|whatever modules need to set this manually.
* Added more debug output, and some new debugger commands, the control option
is now printed in clear text.
* Added hash_address() function to the address modules. Added "const" to
set_to_defaults() where needed.
* Fixed net_buffer's restore header functions offset use as reported by Atis.
* Improved buffer dump output, use the domain module to print the address if
available.
* Moved net_buffer::type into the union, as it's not needed by the upper layers
anymore.
* Moved IPv6 specific code from {add|remove}_default_route() to where it
belongs, but disabled it for the time being.
* Completely discarded useless ipv4_datagram module.
* Added ping6 to the build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37794 a95241bf-73f2-0310-859d-f6bbb57e9c96

NetStack: Fix locking
Change the monitor_lock to be a recursive_lock, fixing #7039.
Notify_device_monitor acquires the monitor lock, then the
monitor unregisters itself, calling unregister_device_monitor, which
acquires the monitor lock again.

* Added a dedicated lock for the device monitors. This fixes a locking issue in
interface_protocol_send_data() which accessed the monitors unlocked.
* Changed SIOCCPACKETCAP to check if the device name matches the one used with
SIOCSPACKETCAP.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37845 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Reworked the complete stack to allow more than one address per network
interface - this caused quite a number of changes.
* Network interfaces, and its addresses are now reference counted (not yet
complete, though, InterfaceAddresses need to hold references to their
interface as well).
* There are two known regressions of this commit that I will fix later:
- you cannot remove interfaces anymore
- IPv4 multicast was broken anyway, but now it's disabled, too.
* Moved a device_interfaces.cpp|h out of interfaces.cpp.
* The datalink layer chain is now instantiated per domain per interface,
not just per interface anymore.
* When a buffer reaches the network layer, it has no known interface yet, ie.
the ipv4|6|whatever modules need to set this manually.
* Added more debug output, and some new debugger commands, the control option
is now printed in clear text.
* Added hash_address() function to the address modules. Added "const" to
set_to_defaults() where needed.
* Fixed net_buffer's restore header functions offset use as reported by Atis.
* Improved buffer dump output, use the domain module to print the address if
available.
* Moved net_buffer::type into the union, as it's not needed by the upper layers
anymore.
* Moved IPv6 specific code from {add|remove}_default_route() to where it
belongs, but disabled it for the time being.
* Completely discarded useless ipv4_datagram module.
* Added ping6 to the build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37794 a95241bf-73f2-0310-859d-f6bbb57e9c96