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| author | Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2014-08-12 10:33:10 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-08-13 20:04:46 -0700 |
| commit | adddc32d6fde82156c779997f928865100542e55 (patch) | |
| tree | b7605e8c600203c43768f48256c4382f30e5c390 /drivers/net/ethernet/sun/sunvnet.h | |
| parent | 1f6394e382f137f07136182c591ca8a7eeba6a06 (diff) | |
| download | linux-adddc32d6fde82156c779997f928865100542e55.tar.bz2 | |
sunvnet: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN
ldc_rx -> vnet_rx -> .. -> vnet_walk_rx->vnet_send_ack should not
spin into an infinite loop waiting EAGAIN to lift.
The sender could have sent us a burst, and gone to lunch without
doing any more ldc_read()'s. That should not cause the receiver to
loop infinitely till soft-lockup kicks in.
Similarly __vnet_tx_trigger should only loop on EAGAIN a finite
number of times. The caller (vnet_start_xmit()) already has code
to reset the dring state and bail on errors from __vnet_tx_trigger
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Raghuram Kothakota <raghuram.kothakota@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sun/sunvnet.h')
0 files changed, 0 insertions, 0 deletions