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Subject[PATCH AUTOSEL for 4.15 011/189] RDMA/core: Clarify rdma_ah_find_type
From: Parav Pandit <>

[ 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 <>
Signed-off-by: Leon Romanovsky <>
Signed-off-by: Jason Gunthorpe <>
Signed-off-by: Sasha Levin <>
include/rdma/ib_verbs.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 0d6a110dae7c..20ebf9061962 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -3793,8 +3793,7 @@ 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))
else if ((rdma_protocol_ib(dev, port_num)) &&
(rdma_cap_opa_ah(dev, port_num)))
 \ /
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