linux-kernel - [PATCH v3 26/28] IB/Verbs: Use management helper cap_eth

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Message-ID: <552BB81A.4020104@profitbricks.com>
Date:	Mon, 13 Apr 2015 14:35:38 +0200
From:	Michael Wang <yun.wang@...fitbricks.com>
To:	Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
CC:	Tom Tucker <tom@...ngridcomputing.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	Hoang-Nam Nguyen <hnguyen@...ibm.com>,
	Christoph Raisch <raisch@...ibm.com>,
	Mike Marciniszyn <infinipath@...el.com>,
	Eli Cohen <eli@...lanox.com>,
	Faisal Latif <faisal.latif@...el.com>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Haggai Eran <haggaie@...lanox.com>,
	Ira Weiny <ira.weiny@...el.com>, Tom Talpey <tom@...pey.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Doug Ledford <dledford@...hat.com>,
	Michael Wang <yun.wang@...fitbricks.com>
Subject: [PATCH v3 26/28] 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@...ngridcomputing.com>
Cc: Tom Talpey <tom@...pey.com>
Cc: Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc: Doug Ledford <dledford@...hat.com>
Cc: Ira Weiny <ira.weiny@...el.com>
Cc: Sean Hefty <sean.hefty@...el.com>
Signed-off-by: Michael Wang <yun.wang@...fitbricks.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 7f5815d..4b083f5 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 6b5fd9d..2e0c2cf1 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 dfe33f3..78a5cdb2 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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