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Date: Tue, 17 Oct 2017 09:27:23 -0700
From: Shannon Nelson <shannon.nelson@...cle.com>
To: Kees Cook <keescook@...omium.org>,
"David S. Miller" <davem@...emloft.net>
Cc: Philippe Reynes <tremyfr@...il.com>,
Jarod Wilson <jarod@...hat.com>, Rob Herring <robh@...nel.org>,
chris hyser <chris.hyser@...cle.com>,
Tushar Dave <tushar.n.dave@...cle.com>,
Tobias Klauser <tklauser@...tanz.ch>, netdev@...r.kernel.org,
Thomas Gleixner <tglx@...utronix.de>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 44/58] net: ethernet: sun: Convert timers to use
timer_setup()
On 10/16/2017 5:29 PM, Kees Cook wrote:
> 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: "David S. Miller" <davem@...emloft.net>
> Cc: Philippe Reynes <tremyfr@...il.com>
> Cc: Jarod Wilson <jarod@...hat.com>
> Cc: Shannon Nelson <shannon.nelson@...cle.com>
> Cc: Rob Herring <robh@...nel.org>
> Cc: chris hyser <chris.hyser@...cle.com>
> Cc: Tushar Dave <tushar.n.dave@...cle.com>
> Cc: Tobias Klauser <tklauser@...tanz.ch>
> Cc: netdev@...r.kernel.org
> Signed-off-by: Kees Cook <keescook@...omium.org>
Acked-by: Shannon Nelson <shannon.nelson@...cle.com>
> ---
> drivers/net/ethernet/sun/cassini.c | 7 ++++---
> drivers/net/ethernet/sun/ldmvsw.c | 3 +--
> drivers/net/ethernet/sun/niu.c | 10 ++++------
> drivers/net/ethernet/sun/sunbmac.c | 10 ++++------
> drivers/net/ethernet/sun/sungem.c | 6 +++---
> drivers/net/ethernet/sun/sunhme.c | 10 ++++------
> drivers/net/ethernet/sun/sunvnet.c | 3 +--
> drivers/net/ethernet/sun/sunvnet_common.c | 4 ++--
> drivers/net/ethernet/sun/sunvnet_common.h | 2 +-
> 9 files changed, 24 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c
> index a74d78f64af9..113bd57e2ea0 100644
> --- a/drivers/net/ethernet/sun/cassini.c
> +++ b/drivers/net/ethernet/sun/cassini.c
> @@ -4079,9 +4079,9 @@ static void cas_reset_task(struct work_struct *work)
> #endif
> }
>
> -static void cas_link_timer(unsigned long data)
> +static void cas_link_timer(struct timer_list *t)
> {
> - struct cas *cp = (struct cas *) data;
> + struct cas *cp = from_timer(cp, t, link_timer);
> int mask, pending = 0, reset = 0;
> unsigned long flags;
>
> @@ -5039,7 +5039,8 @@ static int cas_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
> spin_lock_init(&cp->stat_lock[N_TX_RINGS]);
> mutex_init(&cp->pm_mutex);
>
> - setup_timer(&cp->link_timer, cas_link_timer, (unsigned long)cp);
> + timer_setup(&cp->link_timer, cas_link_timer, 0);
> +
> #if 1
> /* Just in case the implementation of atomic operations
> * change so that an explicit initialization is necessary.
> diff --git a/drivers/net/ethernet/sun/ldmvsw.c b/drivers/net/ethernet/sun/ldmvsw.c
> index 5feeaa9f0a9e..5ea037672e6f 100644
> --- a/drivers/net/ethernet/sun/ldmvsw.c
> +++ b/drivers/net/ethernet/sun/ldmvsw.c
> @@ -363,8 +363,7 @@ static int vsw_port_probe(struct vio_dev *vdev, const struct vio_device_id *id)
> list_add_rcu(&port->list, &vp->port_list);
> spin_unlock_irqrestore(&vp->lock, flags);
>
> - setup_timer(&port->clean_timer, sunvnet_clean_timer_expire_common,
> - (unsigned long)port);
> + timer_setup(&port->clean_timer, sunvnet_clean_timer_expire_common, 0);
>
> err = register_netdev(dev);
> if (err) {
> diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
> index bde19b307d0d..ab502ee35fb2 100644
> --- a/drivers/net/ethernet/sun/niu.c
> +++ b/drivers/net/ethernet/sun/niu.c
> @@ -2221,9 +2221,9 @@ static int niu_link_status(struct niu *np, int *link_up_p)
> return err;
> }
>
> -static void niu_timer(unsigned long __opaque)
> +static void niu_timer(struct timer_list *t)
> {
> - struct niu *np = (struct niu *) __opaque;
> + struct niu *np = from_timer(np, t, timer);
> unsigned long off;
> int err, link_up;
>
> @@ -6123,7 +6123,7 @@ static int niu_open(struct net_device *dev)
>
> err = niu_init_hw(np);
> if (!err) {
> - setup_timer(&np->timer, niu_timer, (unsigned long)np);
> + timer_setup(&np->timer, niu_timer, 0);
> np->timer.expires = jiffies + HZ;
>
> err = niu_enable_interrupts(np, 1);
> @@ -6773,10 +6773,8 @@ static int niu_change_mtu(struct net_device *dev, int new_mtu)
>
> err = niu_init_hw(np);
> if (!err) {
> - init_timer(&np->timer);
> + timer_setup(&np->timer, niu_timer, 0);
> np->timer.expires = jiffies + HZ;
> - np->timer.data = (unsigned long) np;
> - np->timer.function = niu_timer;
>
> err = niu_enable_interrupts(np, 1);
> if (err)
> diff --git a/drivers/net/ethernet/sun/sunbmac.c b/drivers/net/ethernet/sun/sunbmac.c
> index 3189722110c2..0b1f41f6bceb 100644
> --- a/drivers/net/ethernet/sun/sunbmac.c
> +++ b/drivers/net/ethernet/sun/sunbmac.c
> @@ -523,9 +523,9 @@ static int try_next_permutation(struct bigmac *bp, void __iomem *tregs)
> return -1;
> }
>
> -static void bigmac_timer(unsigned long data)
> +static void bigmac_timer(struct timer_list *t)
> {
> - struct bigmac *bp = (struct bigmac *) data;
> + struct bigmac *bp = from_timer(bp, t, bigmac_timer);
> void __iomem *tregs = bp->tregs;
> int restart_timer = 0;
>
> @@ -613,8 +613,6 @@ static void bigmac_begin_auto_negotiation(struct bigmac *bp)
> bp->timer_state = ltrywait;
> bp->timer_ticks = 0;
> bp->bigmac_timer.expires = jiffies + (12 * HZ) / 10;
> - bp->bigmac_timer.data = (unsigned long) bp;
> - bp->bigmac_timer.function = bigmac_timer;
> add_timer(&bp->bigmac_timer);
> }
>
> @@ -921,7 +919,7 @@ static int bigmac_open(struct net_device *dev)
> printk(KERN_ERR "BIGMAC: Can't order irq %d to go.\n", dev->irq);
> return ret;
> }
> - init_timer(&bp->bigmac_timer);
> + timer_setup(&bp->bigmac_timer, bigmac_timer, 0);
> ret = bigmac_init_hw(bp, 0);
> if (ret)
> free_irq(dev->irq, bp);
> @@ -1172,7 +1170,7 @@ static int bigmac_ether_init(struct platform_device *op,
> "board-version", 1);
>
> /* Init auto-negotiation timer state. */
> - init_timer(&bp->bigmac_timer);
> + timer_setup(&bp->bigmac_timer, bigmac_timer, 0);
> bp->timer_state = asleep;
> bp->timer_ticks = 0;
>
> diff --git a/drivers/net/ethernet/sun/sungem.c b/drivers/net/ethernet/sun/sungem.c
> index b75ab8f44968..a7afcee3c5ae 100644
> --- a/drivers/net/ethernet/sun/sungem.c
> +++ b/drivers/net/ethernet/sun/sungem.c
> @@ -1496,9 +1496,9 @@ static int gem_mdio_link_not_up(struct gem *gp)
> }
> }
>
> -static void gem_link_timer(unsigned long data)
> +static void gem_link_timer(struct timer_list *t)
> {
> - struct gem *gp = (struct gem *) data;
> + struct gem *gp = from_timer(gp, t, link_timer);
> struct net_device *dev = gp->dev;
> int restart_aneg = 0;
>
> @@ -2910,7 +2910,7 @@ static int gem_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>
> gp->msg_enable = DEFAULT_MSG;
>
> - setup_timer(&gp->link_timer, gem_link_timer, (unsigned long)gp);
> + timer_setup(&gp->link_timer, gem_link_timer, 0);
>
> INIT_WORK(&gp->reset_task, gem_reset_task);
>
> diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c
> index 9e983e1d8249..0431f1e5f511 100644
> --- a/drivers/net/ethernet/sun/sunhme.c
> +++ b/drivers/net/ethernet/sun/sunhme.c
> @@ -685,9 +685,9 @@ static int is_lucent_phy(struct happy_meal *hp)
> return ret;
> }
>
> -static void happy_meal_timer(unsigned long data)
> +static void happy_meal_timer(struct timer_list *t)
> {
> - struct happy_meal *hp = (struct happy_meal *) data;
> + struct happy_meal *hp = from_timer(hp, t, happy_timer);
> void __iomem *tregs = hp->tcvregs;
> int restart_timer = 0;
>
> @@ -1413,8 +1413,6 @@ happy_meal_begin_auto_negotiation(struct happy_meal *hp,
>
> hp->timer_ticks = 0;
> hp->happy_timer.expires = jiffies + (12 * HZ)/10; /* 1.2 sec. */
> - hp->happy_timer.data = (unsigned long) hp;
> - hp->happy_timer.function = happy_meal_timer;
> add_timer(&hp->happy_timer);
> }
>
> @@ -2819,7 +2817,7 @@ static int happy_meal_sbus_probe_one(struct platform_device *op, int is_qfe)
> hp->timer_state = asleep;
> hp->timer_ticks = 0;
>
> - init_timer(&hp->happy_timer);
> + timer_setup(&hp->happy_timer, happy_meal_timer, 0);
>
> hp->dev = dev;
> dev->netdev_ops = &hme_netdev_ops;
> @@ -3133,7 +3131,7 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
> hp->timer_state = asleep;
> hp->timer_ticks = 0;
>
> - init_timer(&hp->happy_timer);
> + timer_setup(&hp->happy_timer, happy_meal_timer, 0);
>
> hp->irq = pdev->irq;
> hp->dev = dev;
> diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
> index 0b95105f7060..27fb22638885 100644
> --- a/drivers/net/ethernet/sun/sunvnet.c
> +++ b/drivers/net/ethernet/sun/sunvnet.c
> @@ -492,8 +492,7 @@ static int vnet_port_probe(struct vio_dev *vdev, const struct vio_device_id *id)
> pr_info("%s: PORT ( remote-mac %pM%s )\n",
> vp->dev->name, port->raddr, switch_port ? " switch-port" : "");
>
> - setup_timer(&port->clean_timer, sunvnet_clean_timer_expire_common,
> - (unsigned long)port);
> + timer_setup(&port->clean_timer, sunvnet_clean_timer_expire_common, 0);
>
> napi_enable(&port->napi);
> vio_port_up(&port->vio);
> diff --git a/drivers/net/ethernet/sun/sunvnet_common.c b/drivers/net/ethernet/sun/sunvnet_common.c
> index ecf456c7b6d1..8aa3ce46bb81 100644
> --- a/drivers/net/ethernet/sun/sunvnet_common.c
> +++ b/drivers/net/ethernet/sun/sunvnet_common.c
> @@ -1040,9 +1040,9 @@ static inline void vnet_free_skbs(struct sk_buff *skb)
> }
> }
>
> -void sunvnet_clean_timer_expire_common(unsigned long port0)
> +void sunvnet_clean_timer_expire_common(struct timer_list *t)
> {
> - struct vnet_port *port = (struct vnet_port *)port0;
> + struct vnet_port *port = from_timer(port, t, clean_timer);
> struct sk_buff *freeskbs;
> unsigned pending;
>
> diff --git a/drivers/net/ethernet/sun/sunvnet_common.h b/drivers/net/ethernet/sun/sunvnet_common.h
> index b20d6fa7ef25..656673c31066 100644
> --- a/drivers/net/ethernet/sun/sunvnet_common.h
> +++ b/drivers/net/ethernet/sun/sunvnet_common.h
> @@ -129,7 +129,7 @@ struct vnet {
> ((__port)->vsw ? (__port)->dev : (__port)->vp->dev)
>
> /* Common funcs */
> -void sunvnet_clean_timer_expire_common(unsigned long port0);
> +void sunvnet_clean_timer_expire_common(struct timer_list *t);
> int sunvnet_open_common(struct net_device *dev);
> int sunvnet_close_common(struct net_device *dev);
> void sunvnet_set_rx_mode_common(struct net_device *dev, struct vnet *vp);
>
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