Skip to content

R
raspberrypi-kernel

openeuler / raspberrypi-kernel

通知 13
Star 1
Fork 0
R
raspberrypi-kernel
切换分支/标签
  1. 01 7月, 2006 2 次提交
  3. 28 6月, 2006 1 次提交
  5. 27 6月, 2006 2 次提交
  7. 23 6月, 2006 3 次提交
    • H
      [NET]: Avoid allocating skb in skb_pad · 5b057c6b
      由 Herbert Xu 提交于 
      First of all it is unnecessary to allocate a new skb in skb_pad since
the existing one is not shared.  More importantly, our hard_start_xmit
interface does not allow a new skb to be allocated since that breaks
requeueing.

This patch uses pskb_expand_head to expand the existing skb and linearize
it if needed.  Actually, someone should sift through every instance of
skb_pad on a non-linear skb as they do not fit the reasons why this was
originally created.

Incidentally, this fixes a minor bug when the skb is cloned (tcpdump,
TCP, etc.).  As it is skb_pad will simply write over a cloned skb.  Because
of the position of the write it is unlikely to cause problems but still
it's best if we don't do it.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      5b057c6b
    • A
      [PATCH] skb_padto()-area fixes in 8390, wavelan · aa95abef
      由 Alan Cox 提交于 
      Ar Iau, 2006-06-22 am 21:29 +1000, ysgrifennodd Herbert Xu:
> Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> >
> > The 8390 change (corrected version) also makes 8390.c faster so should
> > be applied anyway, and the orinoco one fixes some code that isn't even
> > needed and someone forgot to remove long ago. Otherwise the skb_padto
>
> Yeah I agree totally.  However, I haven't actually seen the fixed 8390
> version being posted yet or at least not to netdev :)

Ah the resounding clang of a subtle hint ;)
Signed-off-by: NAlan Cox <alan@redhat.com>

- Return 8390.c to the old way of handling short packets (which is also
faster)

- Remove the skb_padto from orinoco. This got left in when the padding bad
write patch was added and is actually not needed. This is fixing a merge
error way back when.

- Wavelan can also use the stack based buffer trick if you want
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      aa95abef
    • E
      [PATCH] Array overrun in drivers/net/wireless/wavelan.c · a192491a
      由 Eric Sesterhenn 提交于 
      hi,

this is another array overrun spotted by coverity (#id 507)
we should check the index against array size before using it.
Not sure why the driver doesnt use ARRAY_SIZE instead of its
own macro.
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      a192491a
  9. 18 6月, 2006 1 次提交
    • H
      [NET]: Add netif_tx_lock · 932ff279
      由 Herbert Xu 提交于 
      Various drivers use xmit_lock internally to synchronise with their
transmission routines.  They do so without setting xmit_lock_owner.
This is fine as long as netpoll is not in use.

With netpoll it is possible for deadlocks to occur if xmit_lock_owner
isn't set.  This is because if a printk occurs while xmit_lock is held
and xmit_lock_owner is not set can cause netpoll to attempt to take
xmit_lock recursively.

While it is possible to resolve this by getting netpoll to use
trylock, it is suboptimal because netpoll's sole objective is to
maximise the chance of getting the printk out on the wire.  So
delaying or dropping the message is to be avoided as much as possible.

So the only alternative is to always set xmit_lock_owner.  The
following patch does this by introducing the netif_tx_lock family of
functions that take care of setting/unsetting xmit_lock_owner.

I renamed xmit_lock to _xmit_lock to indicate that it should not be
used directly.  I didn't provide irq versions of the netif_tx_lock
functions since xmit_lock is meant to be a BH-disabling lock.

This is pretty much a straight text substitution except for a small
bug fix in winbond.  It currently uses
netif_stop_queue/spin_unlock_wait to stop transmission.  This is
unsafe as an IRQ can potentially wake up the queue.  So it is safer to
use netif_tx_disable.

The hamradio bits used spin_lock_irq but it is unnecessary as
xmit_lock must never be taken in an IRQ handler.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      932ff279
  11. 16 6月, 2006 4 次提交
  13. 06 6月, 2006 3 次提交
  15. 27 5月, 2006 2 次提交
  17. 24 5月, 2006 1 次提交
  19. 23 5月, 2006 2 次提交
  21. 18 5月, 2006 2 次提交
  23. 06 5月, 2006 12 次提交
  25. 25 4月, 2006 5 次提交