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Message-ID: <20171016225231.GA98935@beast>
Date: Mon, 16 Oct 2017 15:52:31 -0700
From: Kees Cook <keescook@...omium.org>
To: Doug Ledford <dledford@...hat.com>
Cc: Steve Wise <swise@...lsio.com>, Sean Hefty <sean.hefty@...el.com>,
Hal Rosenstock <hal.rosenstock@...il.com>,
linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] RDMA/cxgb4: 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. Also removes an unused timer and
drops a redundant initialization.
Cc: Steve Wise <swise@...lsio.com>
Cc: Doug Ledford <dledford@...hat.com>
Cc: Sean Hefty <sean.hefty@...el.com>
Cc: Hal Rosenstock <hal.rosenstock@...il.com>
Cc: linux-rdma@...r.kernel.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
drivers/infiniband/hw/cxgb4/cm.c | 13 +++++--------
drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 1 -
drivers/infiniband/hw/cxgb4/qp.c | 1 -
3 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index e395afcd7d33..919b68422a5e 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -144,7 +144,7 @@ static struct workqueue_struct *workq;
static struct sk_buff_head rxq;
static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp);
-static void ep_timeout(unsigned long arg);
+static void ep_timeout(struct timer_list *t);
static void connect_reply_upcall(struct c4iw_ep *ep, int status);
static int sched(struct c4iw_dev *dev, struct sk_buff *skb);
@@ -189,8 +189,6 @@ static void start_ep_timer(struct c4iw_ep *ep)
clear_bit(TIMEOUT, &ep->com.flags);
c4iw_get_ep(&ep->com);
ep->timer.expires = jiffies + ep_timeout_secs * HZ;
- ep->timer.data = (unsigned long)ep;
- ep->timer.function = ep_timeout;
add_timer(&ep->timer);
}
@@ -2107,7 +2105,6 @@ static int c4iw_reconnect(struct c4iw_ep *ep)
__u8 *ra;
pr_debug("qp %p cm_id %p\n", ep->com.qp, ep->com.cm_id);
- init_timer(&ep->timer);
c4iw_init_wr_wait(ep->com.wr_waitp);
/* When MPA revision is different on nodes, the node with MPA_rev=2
@@ -2585,7 +2582,7 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
pr_debug("tx_chan %u smac_idx %u rss_qid %u\n",
child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid);
- init_timer(&child_ep->timer);
+ timer_setup(&child_ep->timer, ep_timeout, 0);
cxgb4_insert_tid(t, child_ep, hwtid,
child_ep->com.local_addr.ss_family);
insert_ep_tid(child_ep);
@@ -3210,7 +3207,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
goto fail1;
}
- init_timer(&ep->timer);
+ timer_setup(&ep->timer, ep_timeout, 0);
ep->plen = conn_param->private_data_len;
if (ep->plen)
memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
@@ -4122,9 +4119,9 @@ static void process_work(struct work_struct *work)
static DECLARE_WORK(skb_work, process_work);
-static void ep_timeout(unsigned long arg)
+static void ep_timeout(struct timer_list *t)
{
- struct c4iw_ep *ep = (struct c4iw_ep *)arg;
+ struct c4iw_ep *ep = from_timer(ep, t, timer);
int kickit = 0;
spin_lock(&timeout_lock);
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index d730bb735d74..788ddb6aa57b 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -537,7 +537,6 @@ struct c4iw_qp {
struct mutex mutex;
struct kref kref;
wait_queue_head_t wait;
- struct timer_list timer;
int sq_sig_all;
struct work_struct free_work;
struct c4iw_ucontext *ucontext;
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 56655a000121..57b23e33eb8b 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -1929,7 +1929,6 @@ struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs,
qhp->ucontext = ucontext;
}
qhp->ibqp.qp_num = qhp->wq.sq.qid;
- init_timer(&(qhp->timer));
INIT_LIST_HEAD(&qhp->db_fc_entry);
pr_debug("sq id %u size %u memsize %zu num_entries %u rq id %u size %u memsize %zu num_entries %u\n",
qhp->wq.sq.qid, qhp->wq.sq.size, qhp->wq.sq.memsize,
--
2.7.4
--
Kees Cook
Pixel Security
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