RDMA/core: Clarify rdma_ah_find_type

[ Upstream commit a6532e7139660c103dda181aa5b2c734aa26ed6c ]

iWARP does not use rdma_ah_attr_type, and for this reason we do not have a
RDMA_AH_ATTR_TYPE_IWARP. rdma_ah_find_type should not even be called on iwarp
ports and for clarity it shouldn't have a special test for iWarp.

This changes the result from RDMA_AH_ATTR_TYPE_ROCE to RDMA_AH_ATTR_TYPE_IB
when wrongly called on an iWarp port.

Fixes: 44c58487d51a ("IB/core: Define 'ib' and 'roce' rdma_ah_attr types")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 6533aa6..a9fae49 100644 (file)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -3766,8 +3766,7 @@ static inline void rdma_ah_set_grh(struct rdma_ah_attr *attr,
 static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev,
                                                       u32 port_num)
 {
-       if ((rdma_protocol_roce(dev, port_num)) ||
-           (rdma_protocol_iwarp(dev, port_num)))
+       if (rdma_protocol_roce(dev, port_num))
                return RDMA_AH_ATTR_TYPE_ROCE;
        else if ((rdma_protocol_ib(dev, port_num)) &&
                 (rdma_cap_opa_ah(dev, port_num)))