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Commit 1f8bdae9 authored by Ursula Braun's avatar Ursula Braun Committed by Jeff Garzik
Browse files

s390: free skbs in finite amount of time in qeth 



Free sent skbs in some finite amount of time. Affected are
asynchronous queue of Hipersockets devices and the output
queues of all eth-devices respectively.

Signed-off-by: default avatarUrsula Braun <braunu@de.ibm.com>
Signed-off-by: default avatarFrank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent a4c48a26

drivers/s390/cio/qdio.c

+27 −10
Original line number Diff line number Diff line
@@ -996,18 +996,25 @@ __qdio_outbound_processing(struct qdio_q *q) 
	if (qdio_has_outbound_q_moved(q))

		qdio_kick_outbound_handler(q);



	if (q->is_iqdio_q) {

	if (q->queue_type == QDIO_ZFCP_QFMT) {

		if ((!q->hydra_gives_outbound_pcis) &&

		    (!qdio_is_outbound_q_done(q)))

			qdio_mark_q(q);

	}

	else if (((!q->is_iqdio_q) && (!q->is_pci_out)) ||

		 (q->queue_type == QDIO_IQDIO_QFMT_ASYNCH)) {

		/* 

		 * for asynchronous queues, we better check, if the sent

		 * buffer is already switched from PRIMED to EMPTY.

		 * make sure buffer switch from PRIMED to EMPTY is noticed

		 * and outbound_handler is called

		 */

		if ((q->queue_type == QDIO_IQDIO_QFMT_ASYNCH) &&

		    !qdio_is_outbound_q_done(q))

			qdio_mark_q(q);



	} else if (!q->hydra_gives_outbound_pcis)

		if (!qdio_is_outbound_q_done(q))

			qdio_mark_q(q);

		if (qdio_is_outbound_q_done(q)) {

			del_timer(&q->timer);

		} else {

			if (!timer_pending(&q->timer))

				mod_timer(&q->timer, jiffies +

					  QDIO_FORCE_CHECK_TIMEOUT);

		}

	}



	qdio_release_q(q);

}
@@ -1826,6 +1833,7 @@ qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev, 
			q->queue_type = QDIO_IQDIO_QFMT_ASYNCH;

		q->int_parm=int_parm;

		q->is_input_q=0;

		q->is_pci_out = 0;

		q->schid = irq_ptr->schid;

		q->cdev = cdev;

		q->irq_ptr = irq_ptr;
@@ -1838,6 +1846,10 @@ qdio_fill_qs(struct qdio_irq *irq_ptr, struct ccw_device *cdev, 
		q->tasklet.data=(unsigned long)q;

		q->tasklet.func=(void(*)(unsigned long))

			&qdio_outbound_processing;

		q->timer.function=(void(*)(unsigned long))

			&qdio_outbound_processing;

		q->timer.data = (long)q;

		init_timer(&q->timer);



		atomic_set(&q->busy_siga_counter,0);

		q->timing.busy_start=0;
@@ -2635,6 +2647,7 @@ qdio_shutdown(struct ccw_device *cdev, int how) 


	for (i=0;i<irq_ptr->no_output_qs;i++) {

		tasklet_kill(&irq_ptr->output_qs[i]->tasklet);

		del_timer(&irq_ptr->output_qs[i]->timer);

		wait_event_interruptible_timeout(cdev->private->wait_q,

						 !atomic_read(&irq_ptr->

							      output_qs[i]->
@@ -3458,6 +3471,10 @@ do_qdio_handle_outbound(struct qdio_q *q, unsigned int callflags, 
		qdio_perf_stat_inc(&perf_stats.outbound_cnt);

		return;

	}

	if (callflags & QDIO_FLAG_PCI_OUT)

		q->is_pci_out = 1;

	else

		q->is_pci_out = 0;

	if (q->is_iqdio_q) {

		/* one siga for every sbal */

		while (count--)

drivers/s390/cio/qdio.h

+3 −1
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ 
#define QDIO_ACTIVATE_TIMEOUT ((5*HZ)>>10)

#define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)

#define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)

#define QDIO_FORCE_CHECK_TIMEOUT (10*HZ)



enum qdio_irq_states {

	QDIO_IRQ_STATE_INACTIVE,
@@ -511,8 +512,8 @@ struct qdio_q { 


	void *irq_ptr;



#ifdef QDIO_USE_TIMERS_FOR_POLLING

	struct timer_list timer;

#ifdef QDIO_USE_TIMERS_FOR_POLLING

	atomic_t timer_already_set;

	spinlock_t timer_lock;

#else /* QDIO_USE_TIMERS_FOR_POLLING */
@@ -558,6 +559,7 @@ struct qdio_q { 
	} timing;

	atomic_t busy_siga_counter;

        unsigned int queue_type;

	unsigned int is_pci_out;



	/* leave this member at the end. won't be cleared in qdio_fill_qs */

	struct slib *slib; /* a page is allocated under this pointer,

drivers/s390/net/qeth_main.c

+8 −6
Original line number Diff line number Diff line
@@ -2816,6 +2816,7 @@ qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int, 
	struct qeth_qdio_out_buffer *buf;

	int rc;

	int i;

	unsigned int qdio_flags;



	QETH_DBF_TEXT(trace, 6, "flushbuf");
@@ -2859,12 +2860,12 @@ qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int, 
		queue->card->perf_stats.outbound_do_qdio_start_time =

			qeth_get_micros();

	}

	qdio_flags = QDIO_FLAG_SYNC_OUTPUT;

	if (under_int)

		rc = do_QDIO(CARD_DDEV(queue->card),

			     QDIO_FLAG_SYNC_OUTPUT | QDIO_FLAG_UNDER_INTERRUPT,

			     queue->queue_no, index, count, NULL);

	else

		rc = do_QDIO(CARD_DDEV(queue->card), QDIO_FLAG_SYNC_OUTPUT,

		qdio_flags |= QDIO_FLAG_UNDER_INTERRUPT;

	if (atomic_read(&queue->set_pci_flags_count))

		qdio_flags |= QDIO_FLAG_PCI_OUT;

	rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,

		     queue->queue_no, index, count, NULL);

	if (queue->card->options.performance_stats)

		queue->card->perf_stats.outbound_do_qdio_time +=
@@ -8498,6 +8499,7 @@ __qeth_reboot_event_card(struct device *dev, void *data) 
	card = (struct qeth_card *) dev->driver_data;

	qeth_clear_ip_list(card, 0, 0);

	qeth_qdio_clear_card(card, 0);

	qeth_clear_qdio_buffers(card);

	return 0;

}

include/asm-s390/qdio.h

+1 −0
Original line number Diff line number Diff line
@@ -120,6 +120,7 @@ extern unsigned long qdio_get_status(int irq); 
#define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on

						     adapter interrupts */

#define QDIO_FLAG_DONT_SIGA 0x10

#define QDIO_FLAG_PCI_OUT   0x20



extern int do_QDIO(struct ccw_device*, unsigned int flags, 

		   unsigned int queue_number,