From: Don Hiatt <don.hiatt@intel.com>
Date: Thu, 1 Feb 2018 10:57:03 -0800
Subject: IB/core: Map iWarp AH type to undefined in rdma_ah_find_type
Patch-mainline: v4.16-rc1
Git-commit: 87daac68f77a3e21a1113f816e6a7be0b38bdde8
References: bsc#1046306 FATE#322942
iWarp devices do not support the creation of address handles
so return AH_ATTR_TYPE_UNDEFINED for all iWarp devices.
While we are here reduce the size of port_num to u8 and add
a comment.
Fixes: 44c58487d51a ("IB/core: Define 'ib' and 'roce' rdma_ah_attr types")
Reported-by: Parav Pandit <parav@mellanox.com>
CC: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
include/rdma/ib_verbs.h | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -866,6 +866,7 @@ struct ib_mr_status {
__attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
enum rdma_ah_attr_type {
+ RDMA_AH_ATTR_TYPE_UNDEFINED,
RDMA_AH_ATTR_TYPE_IB,
RDMA_AH_ATTR_TYPE_ROCE,
RDMA_AH_ATTR_TYPE_OPA,
@@ -3762,17 +3763,24 @@ static inline void rdma_ah_set_grh(struc
grh->traffic_class = traffic_class;
}
-/*Get AH type */
+/**
+ * rdma_ah_find_type - Return address handle type.
+ *
+ * @dev: Device to be checked
+ * @port_num: Port number
+ */
static inline enum rdma_ah_attr_type rdma_ah_find_type(struct ib_device *dev,
- u32 port_num)
+ u8 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)))
- return RDMA_AH_ATTR_TYPE_OPA;
- else
+ if (rdma_protocol_ib(dev, port_num)) {
+ if (rdma_cap_opa_ah(dev, port_num))
+ return RDMA_AH_ATTR_TYPE_OPA;
return RDMA_AH_ATTR_TYPE_IB;
+ }
+
+ return RDMA_AH_ATTR_TYPE_UNDEFINED;
}
/**