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Currently tun/tap only supports the EN10MB ARP type. For use with
wireless and other networking types it should be possible to set the
ARP type via an ioctl.
Patch v2: Included check that the tap interface is down before changing the
link type out from underneath it
Signed-off-by: Mike Kershaw <dragorn@kismetwireless.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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into qualcomm.com:/home/kernel/tun-2.6
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From: Shaun Jackman <sjackman@gmail.com>
This patch adds multicast filtering to the TUN network driver, for
packets being sent from the network device to the character device.
* drivers/net/tun.c: Add multicast filtering for packets travelling from
the network device to the character device.
* include/linux/if_tun.h (tun_struct): Add interface flags, a hardware
device addres, and a multicast filter.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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Patch from Harald Roelle <harald.roelle@nm.ifi.lmu.de>
Fixes for the following issues
- "Kicking" packet behavior in case of kernel packet scheduler (! TUN_ONE_QUEUE):
When the netif queue is stopped because of an overrun of the driver's queue,
no new packets are delivered to the driver until a new packet arrives, not even
when in the meantime there's again space in the driver's queue (gained by a
reading user process). In short, whenever netif queue was stopped, one needs an
additional packet to "kick" packet delivery to the driver.
The reason for this is, that the netif queue is started but not woken up, i.e.
the rest of the kernel is not signaled to resume packet delivery.
- Adjustment of tx queue length by ifconfig has only effect when TUN_ONE_QUEUE
is set. Otherwise always constant TUN_READQ_SIZE queue length is used.
- TX queue default length setting is not consistent:
o TAP dev + TUN_ONE_QUEUE: 1000 (by ether_setup())
o all other cases: 10
- Default tx queue length is too short in many cases.
IMHO it should be at least twice as long as the number of fragments needed
for a maximum sized IP packet at a "typical" MTU size.
This would ensure that at least one complete IP packet can be delivered
to the attached user space process, even if the packet's fragments
are "misaligned" in the buffer and the user process is not scheduled
in time to read the queue.
Additional modifications:
- To signal that stopping of the queue has occurred, the tx fifo overrun
counter is increased.
- Implemented ethtool api. Primarily added to have a standard method requesting
the driver version.
Signed-off-by: Max Krasnyansky <maxk@qualcomm.com>
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In favour of those now in kernel.h..
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- Takanori Kawano: brlock indexing bugfix
- Ingo Molnar, Jeff Garzik: softirq updates and fixes
- Al Viro: rampage of superblock cleanups.
- Jean Tourrilhes: Orinoco driver update v6, IrNET update
- Trond Myklebust: NFS brown-paper-bag thing
- Tim Waugh: parport update
- David Miller: networking and sparc updates
- Jes Sorensen: m68k update.
- Ben Fennema: UDF update
- Geert Uytterhoeven: fbdev logo updates
- Willem Riede: osst driver updates
- Paul Mackerras: PPC update
- Marcelo Tosatti: unlazy swap cache
- Mikulas Patocka: hpfs update
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