netdev - [RFC PATCH 03/11] IB/Verbs: Use management helper has

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Date:	Fri, 27 Mar 2015 16:43:09 +0100
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>,
	Ira Weiny <ira.weiny@...el.com>, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org
CC:	"J. Bruce Fields" <bfields@...ldses.org>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	"David S. Miller" <davem@...emloft.net>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Moni Shoua <monis@...lanox.com>,
	PJ Waskiewicz <pj.waskiewicz@...idfire.com>,
	Tatyana Nikolova <Tatyana.E.Nikolova@...el.com>,
	Yan Burman <yanb@...lanox.com>,
	Jack Morgenstein <jackm@....mellanox.co.il>,
	Bart Van Assche <bvanassche@....org>,
	Yann Droneaud <ydroneaud@...eya.com>,
	Colin Ian King <colin.king@...onical.com>,
	Majd Dibbiny <majd@...lanox.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Matan Barak <matanb@...lanox.com>,
	Alex Estrin <alex.estrin@...el.com>,
	Doug Ledford <dledford@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Erez Shitrit <erezsh@...lanox.com>,
	Sagi Grimberg <sagig@...lanox.com>,
	Haggai Eran <haggaie@...lanox.com>,
	Shachar Raindel <raindel@...lanox.com>,
	Mike Marciniszyn <mike.marciniszyn@...el.com>,
	Steve Wise <swise@...ngridcomputing.com>,
	Tom Tucker <tom@....us>, Chuck Lever <chuck.lever@...cle.com>,
	Michael Wang <yun.wang@...fitbricks.com>
Subject: [RFC PATCH 03/11] IB/Verbs: Use management helper has_mad() for mad-check


Introduce helper has_mad() to help us check if an IB device support
Management Datagrams.

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/mad.c      |  4 ++--
 drivers/infiniband/core/user_mad.c |  2 +-
 include/rdma/ib_verbs.h            | 13 +++++++++++++
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 23cf9e8..896b749 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -3057,7 +3057,7 @@ static void ib_mad_init_device(struct ib_device *device)
 {
     int start, end, i;
 
-    if (!rdma_transport_is_ib(device))
+    if (!has_mad(device))
         return;
 
     if (device->node_type == RDMA_NODE_IB_SWITCH) {
@@ -3102,7 +3102,7 @@ static void ib_mad_remove_device(struct ib_device *device)
 {
     int i, num_ports, cur_port;
 
-    if (!rdma_transport_is_ib(device))
+    if (!has_mad(device))
         return;
 
     if (device->node_type == RDMA_NODE_IB_SWITCH) {
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c
index 28a8b30..31feec3 100644
--- a/drivers/infiniband/core/user_mad.c
+++ b/drivers/infiniband/core/user_mad.c
@@ -1274,7 +1274,7 @@ static void ib_umad_add_one(struct ib_device *device)
     struct ib_umad_device *umad_dev;
     int s, e, i;
 
-    if (!rdma_transport_is_ib(device))
+    if (!has_mad(device))
         return;
 
     if (device->node_type == RDMA_NODE_IB_SWITCH)
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index ca6d6bc..7b2bfe8 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1783,6 +1783,19 @@ static inline int tech_iboe(struct ib_device *device, u8 port_num)
             rdma_port_ll_is_eth(device, port_num);
 }
 
+/**
+ * has_mad - Check if a device support Management Datagrams.
+ *
+ * @device: Device to be checked
+ *
+ * Return 0 when a device has none port to support
+ * Management Datagrams.
+ */
+static inline int has_mad(struct ib_device *device)
+{
+    return rdma_transport_is_ib(device);
+}
+
 int ib_query_gid(struct ib_device *device,
          u8 port_num, int index, union ib_gid *gid);
 
-- 
2.1.0

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