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Message-ID: <5523CE6F.4020206@profitbricks.com>
Date: Tue, 07 Apr 2015 14:32:47 +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 06/17] IB/Verbs: Use management helper cap_ib_sa() for
sa-check
Introduce helper cap_ib_sa() to help us check if the port of an
IB device support Infiniband Subnet Administrator.
Reform ib_sa_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/sa_query.c | 27 +++++++++++++++++----------
include/rdma/ib_verbs.h | 15 +++++++++++++++
2 files changed, 32 insertions(+), 10 deletions(-)
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index c38f030..f704254 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -450,7 +450,7 @@ static void ib_sa_event(struct ib_event_handler *handler, struct ib_event *event
struct ib_sa_port *port =
&sa_dev->port[event->element.port_num - sa_dev->start_port];
- if (rdma_port_get_link_layer(handler->device, port->port_num) != IB_LINK_LAYER_INFINIBAND)
+ if (WARN_ON(!cap_ib_sa(handler->device, port->port_num)))
return;
spin_lock_irqsave(&port->ah_lock, flags);
@@ -1153,9 +1153,7 @@ static void ib_sa_add_one(struct ib_device *device)
{
struct ib_sa_device *sa_dev;
int s, e, i;
-
- if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
- return;
+ int count = 0;
if (device->node_type == RDMA_NODE_IB_SWITCH)
s = e = 0;
@@ -1175,7 +1173,7 @@ static void ib_sa_add_one(struct ib_device *device)
for (i = 0; i <= e - s; ++i) {
spin_lock_init(&sa_dev->port[i].ah_lock);
- if (rdma_port_get_link_layer(device, i + 1) != IB_LINK_LAYER_INFINIBAND)
+ if (!cap_ib_sa(device, i + 1))
continue;
sa_dev->port[i].sm_ah = NULL;
@@ -1189,6 +1187,13 @@ static void ib_sa_add_one(struct ib_device *device)
goto err;
INIT_WORK(&sa_dev->port[i].update_task, update_sm_ah);
+
+ count++;
+ }
+
+ if (!count) {
+ kfree(sa_dev);
+ return;
}
ib_set_client_data(device, &sa_client, sa_dev);
@@ -1204,16 +1209,18 @@ static void ib_sa_add_one(struct ib_device *device)
if (ib_register_event_handler(&sa_dev->event_handler))
goto err;
- for (i = 0; i <= e - s; ++i)
- if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND)
+ for (i = 0; i <= e - s; ++i) {
+ if (cap_ib_sa(device, i + 1))
update_sm_ah(&sa_dev->port[i].update_task);
+ }
return;
err:
- while (--i >= 0)
- if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND)
+ while (--i >= 0) {
+ if (cap_ib_sa(device, i + 1))
ib_unregister_mad_agent(sa_dev->port[i].agent);
+ }
kfree(sa_dev);
@@ -1233,7 +1240,7 @@ static void ib_sa_remove_one(struct ib_device *device)
flush_workqueue(ib_wq);
for (i = 0; i <= sa_dev->end_port - sa_dev->start_port; ++i) {
- if (rdma_port_get_link_layer(device, i + 1) == IB_LINK_LAYER_INFINIBAND) {
+ if (cap_ib_sa(device, i + 1)) {
ib_unregister_mad_agent(sa_dev->port[i].agent);
if (sa_dev->port[i].sm_ah)
kref_put(&sa_dev->port[i].sm_ah->ref, free_sm_ah);
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 3ba963f..c405e45 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -1818,6 +1818,21 @@ static inline int cap_ib_cm(struct ib_device *device, u8 port_num)
return rdma_ib_mgmt(device, port_num);
}
+/**
+ * cap_ib_sa - Check if the port of device has the capability Infiniband
+ * Subnet Administrator.
+ *
+ * @device: Device to be checked
+ * @port_num: Port number of the device
+ *
+ * Return 0 when port of the device don't support Infiniband
+ * Subnet Administrator.
+ */
+static inline int cap_ib_sa(struct ib_device *device, u8 port_num)
+{
+ return rdma_transport_ib(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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