net: ethernet/sfc: 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: Solarflare linux maintainers <[e-mail]>
Cc: Edward Cree <[e-mail]>
Cc: Bert Kenward <[e-mail]>
Cc: "David S. Miller" <[e-mail]>
Cc: Eric Dumazet <[e-mail]>
Cc: Jiri Pirko <[e-mail]>
Cc: Jamal Hadi Salim <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: [e-mail]
Signed-off-by: Kees Cook <[e-mail]>
Acked-by: Bert Kenward <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/sfc/efx.c

···
 
 	rx_queue = &channel->rx_queue;
 	rx_queue->efx = efx;
-	setup_timer(&rx_queue->slow_fill, efx_rx_slow_fill,
-		    (unsigned long)rx_queue);
+	timer_setup(&rx_queue->slow_fill, efx_rx_slow_fill, 0);
 
 	return channel;
 }
···
 	rx_queue = &channel->rx_queue;
 	rx_queue->buffer = NULL;
 	memset(&rx_queue->rxd, 0, sizeof(rx_queue->rxd));
-	setup_timer(&rx_queue->slow_fill, efx_rx_slow_fill,
-		    (unsigned long)rx_queue);
+	timer_setup(&rx_queue->slow_fill, efx_rx_slow_fill, 0);
 
 	return channel;
 }

drivers/net/ethernet/sfc/efx.h

···
 void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
 void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
 void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue, bool atomic);
-void efx_rx_slow_fill(unsigned long context);
+void efx_rx_slow_fill(struct timer_list *t);
 void __efx_rx_packet(struct efx_channel *channel);
 void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
 		   unsigned int n_frags, unsigned int len, u16 flags);

drivers/net/ethernet/sfc/falcon/efx.c

···
 
 	rx_queue = &channel->rx_queue;
 	rx_queue->efx = efx;
-	setup_timer(&rx_queue->slow_fill, ef4_rx_slow_fill,
-		    (unsigned long)rx_queue);
+	timer_setup(&rx_queue->slow_fill, ef4_rx_slow_fill, 0);
 
 	return channel;
 }
···
 	rx_queue = &channel->rx_queue;
 	rx_queue->buffer = NULL;
 	memset(&rx_queue->rxd, 0, sizeof(rx_queue->rxd));
-	setup_timer(&rx_queue->slow_fill, ef4_rx_slow_fill,
-		    (unsigned long)rx_queue);
+	timer_setup(&rx_queue->slow_fill, ef4_rx_slow_fill, 0);
 
 	return channel;
 }

drivers/net/ethernet/sfc/falcon/efx.h

···
 void ef4_init_rx_queue(struct ef4_rx_queue *rx_queue);
 void ef4_fini_rx_queue(struct ef4_rx_queue *rx_queue);
 void ef4_fast_push_rx_descriptors(struct ef4_rx_queue *rx_queue, bool atomic);
-void ef4_rx_slow_fill(unsigned long context);
+void ef4_rx_slow_fill(struct timer_list *t);
 void __ef4_rx_packet(struct ef4_channel *channel);
 void ef4_rx_packet(struct ef4_rx_queue *rx_queue, unsigned int index,
 		   unsigned int n_frags, unsigned int len, u16 flags);

drivers/net/ethernet/sfc/falcon/falcon.c

···
 	}
 }
 
-static void falcon_stats_timer_func(unsigned long context)
+static void falcon_stats_timer_func(struct timer_list *t)
 {
-	struct ef4_nic *efx = (struct ef4_nic *)context;
-	struct falcon_nic_data *nic_data = efx->nic_data;
+	struct falcon_nic_data *nic_data = from_timer(nic_data, t,
+						      stats_timer);
+	struct ef4_nic *efx = nic_data->efx;
 
 	spin_lock(&efx->stats_lock);
 
···
 	if (!nic_data)
 		return -ENOMEM;
 	efx->nic_data = nic_data;
+	nic_data->efx = efx;
 
 	rc = -ENODEV;
 
···
 	}
 
 	nic_data->stats_disable_count = 1;
-	setup_timer(&nic_data->stats_timer, &falcon_stats_timer_func,
-		    (unsigned long)efx);
+	timer_setup(&nic_data->stats_timer, falcon_stats_timer_func, 0);
 
 	return 0;
 

drivers/net/ethernet/sfc/falcon/nic.h

···
 /**
  * struct falcon_nic_data - Falcon NIC state
  * @pci_dev2: Secondary function of Falcon A
+ * @efx: ef4_nic pointer
  * @board: Board state and functions
  * @stats: Hardware statistics
  * @stats_disable_count: Nest count for disabling statistics fetches
···
  */
 struct falcon_nic_data {
 	struct pci_dev *pci_dev2;
+	struct ef4_nic *efx;
 	struct falcon_board board;
 	u64 stats[FALCON_STAT_COUNT];
 	unsigned int stats_disable_count;

drivers/net/ethernet/sfc/falcon/rx.c

···
 		ef4_nic_notify_rx_desc(rx_queue);
 }
 
-void ef4_rx_slow_fill(unsigned long context)
+void ef4_rx_slow_fill(struct timer_list *t)
 {
-	struct ef4_rx_queue *rx_queue = (struct ef4_rx_queue *)context;
+	struct ef4_rx_queue *rx_queue = from_timer(rx_queue, t, slow_fill);
 
 	/* Post an event to cause NAPI to run and refill the queue */
 	ef4_nic_generate_fill_event(rx_queue);

drivers/net/ethernet/sfc/mcdi.c

···
 	/* followed by request/response buffer */
 };
 
-static void efx_mcdi_timeout_async(unsigned long context);
+static void efx_mcdi_timeout_async(struct timer_list *t);
 static int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,
 			       bool *was_attached_out);
 static bool efx_mcdi_poll_once(struct efx_nic *efx);
···
 	mcdi->mode = MCDI_MODE_POLL;
 	spin_lock_init(&mcdi->async_lock);
 	INIT_LIST_HEAD(&mcdi->async_list);
-	setup_timer(&mcdi->async_timer, efx_mcdi_timeout_async,
-		    (unsigned long)mcdi);
+	timer_setup(&mcdi->async_timer, efx_mcdi_timeout_async, 0);
 
 	(void) efx_mcdi_poll_reboot(efx);
 	mcdi->new_epoch = true;
···
 	}
 }
 
-static void efx_mcdi_timeout_async(unsigned long context)
+static void efx_mcdi_timeout_async(struct timer_list *t)
 {
-	struct efx_mcdi_iface *mcdi = (struct efx_mcdi_iface *)context;
+	struct efx_mcdi_iface *mcdi = from_timer(mcdi, t, async_timer);
 
 	efx_mcdi_complete_async(mcdi, true);
 }

drivers/net/ethernet/sfc/rx.c

···
 		efx_nic_notify_rx_desc(rx_queue);
 }
 
-void efx_rx_slow_fill(unsigned long context)
+void efx_rx_slow_fill(struct timer_list *t)
 {
-	struct efx_rx_queue *rx_queue = (struct efx_rx_queue *)context;
+	struct efx_rx_queue *rx_queue = from_timer(rx_queue, t, slow_fill);
 
 	/* Post an event to cause NAPI to run and refill the queue */
 	efx_nic_generate_fill_event(rx_queue);