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Subject[PATCH v4 25/27] IB/Verbs: Use management helper cap_eth_ah()

Introduce helper cap_eth_ah() to help us check if the port of an
IB device support Ethernet Address Handler.

Cc: Steve Wise <swise@opengridcomputing.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Michael Wang <yun.wang@profitbricks.com>
---
drivers/infiniband/core/cma.c | 6 +++---
drivers/infiniband/core/sa_query.c | 2 +-
drivers/infiniband/core/verbs.c | 2 +-
include/rdma/ib_verbs.h | 15 +++++++++++++++
4 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index d72a2a4..e91ee7a 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -733,10 +733,10 @@ static int cma_ib_init_qp_attr(struct rdma_id_private *id_priv,
int ret;
u16 pkey;

- if (rdma_tech_ib(id_priv->id.device, id_priv->id.port_num))
- pkey = ib_addr_get_pkey(dev_addr);
- else
+ if (cap_eth_ah(id_priv->id.device, id_priv->id.port_num))
pkey = 0xffff;
+ else
+ pkey = ib_addr_get_pkey(dev_addr);

ret = ib_find_cached_pkey(id_priv->id.device, id_priv->id.port_num,
pkey, &qp_attr->pkey_index);
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index fc7e161..409ec4e 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -540,7 +540,7 @@ int ib_init_ah_from_path(struct ib_device *device, u8 port_num,
ah_attr->port_num = port_num;
ah_attr->static_rate = rec->rate;

- force_grh = rdma_tech_iboe(device, port_num);
+ force_grh = cap_eth_ah(device, port_num);

if (rec->hop_limit > 1 || force_grh) {
ah_attr->ah_flags = IB_AH_GRH;
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 7264860..ee4b5cb 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -202,7 +202,7 @@ int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
int ret;

memset(ah_attr, 0, sizeof *ah_attr);
- if (rdma_tech_iboe(device, port_num)) {
+ if (cap_eth_ah(device, port_num)) {
if (!(wc->wc_flags & IB_WC_GRH))
return -EPROTOTYPE;

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 87ab01b..09c83ae 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1894,6 +1894,21 @@ static inline int cap_af_ib(struct ib_device *device, u8 port_num)
}

/**
+ * cap_eth_ah - Check if the port of device has the capability
+ * Ethernet Address Handler.
+ *
+ * @device: Device to be checked
+ * @port_num: Port number of the device
+ *
+ * Return 0 when port of the device don't support
+ * Ethernet Address Handler.
+ */
+static inline int cap_eth_ah(struct ib_device *device, u8 port_num)
+{
+ return rdma_tech_iboe(device, port_num);
+}
+
+/**
* cap_read_multi_sge - Check if the port of device has the capability
* RDMA Read Multiple Scatter-Gather Entries.
*
--
2.1.0

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