pfinet: fix emission on the loopback device

Unlike other devices, sending packets on the loopback device causes the
netif_rx() function to be called from the net_bh worker thread. Since
the thread is already running, it can't wake itself up when calling
mark_bh(). Use a new variable to indicate when net_bh work is pending.

* glue-include/linux/interrupt.h (net_bh_raised): Declare new global
variable.
(mark_bh): Set net_bh_raised to 1 before waking up net_bh worker thread.
* loopback.c (loopback_xmit): Add comment giving details about locking.
* sched.c (net_bh_raised): Define new global variable.
(net_bh_worker): Wait for net_bh_raised to become true and reset it
before processing net_bh work.

0 files changed, 0 insertions, 0 deletions