IB/hfi1: Activate the dummy netdev

As described in earlier patches, ipoib netdev will share receive
contexts with existing VNIC netdev through a dummy netdev. The
following changes are made to achieve that:
- Set up netdev receive contexts after user contexts. A function is
  added to count the available netdev receive contexts.
- Add functions to set/get receive map table free index.
- Rename NUM_VNIC_MAP_ENTRIES as NUM_NETDEV_MAP_ENTRIES.
- Let the dummy netdev own the receive contexts instead of VNIC.
- Allocate the dummy netdev when the hfi1 device is added and free it
  when the device is removed.
- Initialize AIP RSM rules when the IpoIb rxq is initialized and
  remove the rules when it is de-initialized.
- Convert VNIC to use the dummy netdev.

Link: https://lore.kernel.org/r/20200511160649.173205.4626.stgit@awfm-01.aw.intel.com
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Sadanand Warrier <sadanand.warrier@intel.com>
Signed-off-by: Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

1 files changed, 0 insertions, 18 deletions

diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c
index d89fc8fdff6a..60ff6de8cf98 100644
--- a/drivers/infiniband/hw/hfi1/driver.c
+++ b/drivers/infiniband/hw/hfi1/driver.c
@@ -1771,28 +1771,10 @@ static void process_receive_ib(struct hfi1_packet *packet)
 	hfi1_ib_rcv(packet);
 }
 
-static inline bool hfi1_is_vnic_packet(struct hfi1_packet *packet)
-{
-	/* Packet received in VNIC context via RSM */
-	if (packet->rcd->is_vnic)
-		return true;
-
-	if ((hfi1_16B_get_l2(packet->ebuf) == OPA_16B_L2_TYPE) &&
-	    (hfi1_16B_get_l4(packet->ebuf) == OPA_16B_L4_ETHR))
-		return true;
-
-	return false;
-}
-
 static void process_receive_bypass(struct hfi1_packet *packet)
 {
 	struct hfi1_devdata *dd = packet->rcd->dd;
 
-	if (hfi1_is_vnic_packet(packet)) {
-		hfi1_vnic_bypass_rcv(packet);
-		return;
-	}
-
 	if (hfi1_setup_bypass_packet(packet))
 		return;