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Date: Tue, 07 Apr 2015 14:32:05 +0200
From: Michael Wang <yun.wang@...fitbricks.com>
To: Roland Dreier <roland@...nel.org>,
Sean Hefty <sean.hefty@...el.com>, linux-rdma@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org,
netdev@...r.kernel.org
CC: Hal Rosenstock <hal.rosenstock@...il.com>,
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>,
Upinder Malhi <umalhi@...co.com>,
Trond Myklebust <trond.myklebust@...marydata.com>,
"J. Bruce Fields" <bfields@...ldses.org>,
"David S. Miller" <davem@...emloft.net>,
Ira Weiny <ira.weiny@...el.com>,
PJ Waskiewicz <pj.waskiewicz@...idfire.com>,
Tatyana Nikolova <Tatyana.E.Nikolova@...el.com>,
Or Gerlitz <ogerlitz@...lanox.com>,
Jack Morgenstein <jackm@....mellanox.co.il>,
Haggai Eran <haggaie@...lanox.com>,
Ilya Nelkenbaum <ilyan@...lanox.com>,
Yann Droneaud <ydroneaud@...eya.com>,
Bart Van Assche <bvanassche@....org>,
Shachar Raindel <raindel@...lanox.com>,
Sagi Grimberg <sagig@...lanox.com>,
Devesh Sharma <devesh.sharma@...lex.com>,
Matan Barak <matanb@...lanox.com>,
Moni Shoua <monis@...lanox.com>, Jiri Kosina <jkosina@...e.cz>,
Selvin Xavier <selvin.xavier@...lex.com>,
Mitesh Ahuja <mitesh.ahuja@...lex.com>,
Li RongQing <roy.qing.li@...il.com>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
Alex Estrin <alex.estrin@...el.com>,
Doug Ledford <dledford@...hat.com>,
Eric Dumazet <edumazet@...gle.com>,
Erez Shitrit <erezsh@...lanox.com>,
Tom Gundersen <teg@...m.no>,
Chuck Lever <chuck.lever@...cle.com>,
Michael Wang <yun.wang@...fitbricks.com>
Subject: [PATCH v2 05/17] IB/Verbs: Use management helper cap_ib_cm() for
cm-check
Introduce helper cap_ib_cm() to help us check if the port of an
IB device support Infiniband Communication Manager.
Reform cm_add_one() to fit per-port-check method better.
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/cm.c | 22 +++++++++++++++++++---
include/rdma/ib_verbs.h | 15 +++++++++++++++
2 files changed, 34 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index e28a494..63418ee 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -3761,9 +3761,7 @@ static void cm_add_one(struct ib_device *ib_device)
unsigned long flags;
int ret;
u8 i;
-
- if (rdma_node_get_transport(ib_device->node_type) != RDMA_TRANSPORT_IB)
- return;
+ int count = 0;
cm_dev = kzalloc(sizeof(*cm_dev) + sizeof(*port) *
ib_device->phys_port_cnt, GFP_KERNEL);
@@ -3783,6 +3781,9 @@ static void cm_add_one(struct ib_device *ib_device)
set_bit(IB_MGMT_METHOD_SEND, reg_req.method_mask);
for (i = 1; i <= ib_device->phys_port_cnt; i++) {
+ if (!cap_ib_cm(ib_device, i))
+ continue;
+
port = kzalloc(sizeof *port, GFP_KERNEL);
if (!port)
goto error1;
@@ -3809,7 +3810,16 @@ static void cm_add_one(struct ib_device *ib_device)
ret = ib_modify_port(ib_device, i, 0, &port_modify);
if (ret)
goto error3;
+
+ count++;
}
+
+ if (!count) {
+ device_unregister(cm_dev->device);
+ kfree(cm_dev);
+ return;
+ }
+
ib_set_client_data(ib_device, &cm_client, cm_dev);
write_lock_irqsave(&cm.device_lock, flags);
@@ -3825,6 +3835,9 @@ error1:
port_modify.set_port_cap_mask = 0;
port_modify.clr_port_cap_mask = IB_PORT_CM_SUP;
while (--i) {
+ if (!cap_ib_cm(ib_device, i))
+ continue;
+
port = cm_dev->port[i-1];
ib_modify_port(ib_device, port->port_num, 0, &port_modify);
ib_unregister_mad_agent(port->mad_agent);
@@ -3853,6 +3866,9 @@ static void cm_remove_one(struct ib_device *ib_device)
write_unlock_irqrestore(&cm.device_lock, flags);
for (i = 1; i <= ib_device->phys_port_cnt; i++) {
+ if (!cap_ib_cm(ib_device, i))
+ continue;
+
port = cm_dev->port[i-1];
ib_modify_port(ib_device, port->port_num, 0, &port_modify);
ib_unregister_mad_agent(port->mad_agent);
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index ee76010..3ba963f 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1803,6 +1803,21 @@ static inline int cap_ib_smi(struct ib_device *device, u8 port_num)
return rdma_transport_ib(device, port_num);
}
+/**
+ * cap_ib_cm - Check if the port of device has the capability Infiniband
+ * Communication Manager.
+ *
+ * @device: Device to be checked
+ * @port_num: Port number of the device
+ *
+ * Return 0 when port of the device don't support Infiniband
+ * Communication Manager.
+ */
+static inline int cap_ib_cm(struct ib_device *device, u8 port_num)
+{
+ return rdma_ib_mgmt(device, port_num);
+}
+
int ib_query_gid(struct ib_device *device,
u8 port_num, int index, union ib_gid *gid);
--
2.1.0
--
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