tree f2b1f134342eb2d2b5965c0dbfd76bd420d8148f
parent 7ecf6d8ff154e6f7471ee537a400d43a5f3b1c57
author Maor Gottlieb <maorg@mellanox.com> 1496129350 +0300
committer Doug Ledford <dledford@redhat.com> 1500906868 -0400

IB/core: Introduce delay drop for a WQ

Work queue which is created with IB_WQ_FLAGS_DELAY_DROP won't
cause packet drops when there aren't receive WQEs, but will wait until
posting of receive WQEs or for some period of time that the device
was configured with.

It includes:
 * Add a new creation flag to enable delay drop functionality in a WQ.
 * A new capability was introduced - IB_RAW_PACKET_CAP_DELAY_DROP, which
   is the device's ability to delay packet drops when there aren't receive
   WQEs.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>