kernel-ark/drivers/infiniband/ulp
Yossi Etigin e028cc55cc IPoIB: Disable NAPI while CQ is being drained
If NAPI is enabled while IPoIB's CQ is being drained, it creates a
race on priv->ibwc between ipoib_poll() and ipoib_drain_cq(), leading
to memory corruption.

The solution is to enable/disable NAPI in ipoib_ib_dev_{open/stop}()
instead of in ipoib_{open/stop}(), and sync NAPI on the INITIALIZED
flag instead on the ADMIN_UP flag. This way NAPI will be disabled when
ipoib_drain_cq() is called.

This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1587>.

Signed-off-by: Yossi Etigin <yosefe@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-04-20 13:58:08 -07:00
..
ipoib IPoIB: Disable NAPI while CQ is being drained 2009-04-20 13:58:08 -07:00
iser Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-03-28 13:30:43 -07:00
srp infiniband: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:39 -08:00