linux-kernel - [PATCH] IB/ipoib: Convert timers to use timer

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Message-ID: <20171005004554.GA22669@beast>
Date:   Wed, 4 Oct 2017 17:45:54 -0700
From:   Kees Cook <keescook@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     Doug Ledford <dledford@...hat.com>,
        Sean Hefty <sean.hefty@...el.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        Leon Romanovsky <leon@...nel.org>,
        Alex Vesker <valex@...lanox.com>,
        Erez Shitrit <erezsh@...lanox.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Dasaratharaman Chandramouli 
        <dasaratharaman.chandramouli@...el.com>,
        Zhu Yanjun <yanjun.zhu@...cle.com>,
        "kernel@...p.com" <kernel@...p.com>,
        Kees Cook <keescook@...omium.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Niranjana Vishwanathapura <niranjana.vishwanathapura@...el.com>,
        Feras Daoud <ferasda@...lanox.com>,
        Alex Estrin <alex.estrin@...el.com>,
        Shamir Rabinovitch <shamir.rabinovitch@...cle.com>,
        linux-rdma@...r.kernel.org, Yuval Shaia <yuval.shaia@...cle.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] IB/ipoib: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Doug Ledford <dledford@...hat.com>
Cc: Sean Hefty <sean.hefty@...el.com>
Cc: Hal Rosenstock <hal.rosenstock@...il.com>
Cc: Leon Romanovsky <leon@...nel.org>
Cc: Alex Vesker <valex@...lanox.com>
Cc: Erez Shitrit <erezsh@...lanox.com>
Cc: Zhu Yanjun <yanjun.zhu@...cle.com>
Cc: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@...el.com>
Cc: Paolo Abeni <pabeni@...hat.com>
Cc: Ira Weiny <ira.weiny@...el.com>
Cc: Yuval Shaia <yuval.shaia@...cle.com>
Cc: linux-rdma@...r.kernel.org
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Kees Cook <keescook@...omium.org>
---
This requires commit 686fef928bba ("timer: Prepare to change timer
callback argument type") in v4.14-rc3, but should be otherwise
stand-alone.
---
 drivers/infiniband/ulp/ipoib/ipoib.h      | 2 +-
 drivers/infiniband/ulp/ipoib/ipoib_ib.c   | 6 ++++--
 drivers/infiniband/ulp/ipoib/ipoib_main.c | 3 +--
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h
index 4a5c7a07a631..7cc2b755413d 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib.h
+++ b/drivers/infiniband/ulp/ipoib/ipoib.h
@@ -500,7 +500,7 @@ void ipoib_mark_paths_invalid(struct net_device *dev);
 void ipoib_flush_paths(struct net_device *dev);
 struct ipoib_dev_priv *ipoib_intf_alloc(struct ib_device *hca, u8 port,
 					const char *format);
-void ipoib_ib_tx_timer_func(unsigned long ctx);
+void ipoib_ib_tx_timer_func(struct timer_list *t);
 void ipoib_ib_dev_flush_light(struct work_struct *work);
 void ipoib_ib_dev_flush_normal(struct work_struct *work);
 void ipoib_ib_dev_flush_heavy(struct work_struct *work);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index 6cd61638b441..918930a0bc70 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -821,9 +821,11 @@ int ipoib_ib_dev_stop(struct net_device *dev)
 	return 0;
 }
 
-void ipoib_ib_tx_timer_func(unsigned long ctx)
+void ipoib_ib_tx_timer_func(struct timer_list *t)
 {
-	drain_tx_cq((struct net_device *)ctx);
+	struct ipoib_dev_priv *priv = from_timer(priv, t, poll_timer);
+
+	drain_tx_cq(priv->dev);
 }
 
 int ipoib_ib_dev_open_default(struct net_device *dev)
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index dcc77014018d..77c1b7adbb40 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1666,8 +1666,7 @@ static int ipoib_dev_init_default(struct net_device *dev)
 	priv->dev->dev_addr[2] = (priv->qp->qp_num >>  8) & 0xff;
 	priv->dev->dev_addr[3] = (priv->qp->qp_num) & 0xff;
 
-	setup_timer(&priv->poll_timer, ipoib_ib_tx_timer_func,
-		    (unsigned long)dev);
+	timer_setup(&priv->poll_timer, ipoib_ib_tx_timer_func, 0);
 
 	return 0;
 
-- 
2.7.4


-- 
Kees Cook
Pixel Security