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s390/qeth: allocate RX queue at probe time

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We always need an RX queue, and there's no reconfig situation either
where we would need to free & rebuild the queue.

So allocate the RX queue right from the start, and avoid freeing it
during unrelated qeth_free_qdio_queues() calls.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2021-11-18 17:06:02 +01:00 committed by David S. Miller
parent 2edc4bf666
commit 832585d217
1 changed files with 17 additions and 18 deletions
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35
drivers/s390/net/qeth_core_main.c
View file

@ -194,9 +194,6 @@ static void qeth_clear_working_pool_list(struct qeth_card *card)
&card->qdio.in_buf_pool.entry_list, list)
list_del(&pool_entry->list);
if (!queue)
return;
for (i = 0; i < ARRAY_SIZE(queue->bufs); i++)
queue->bufs[i].pool_entry = NULL;
}
@ -275,8 +272,8 @@ int qeth_resize_buffer_pool(struct qeth_card *card, unsigned int count)
QETH_CARD_TEXT(card, 2, "realcbp");
/* Defer until queue is allocated: */
if (!card->qdio.in_q)
/* Defer until pool is allocated: */
if (list_empty(&pool->entry_list))
goto out;
/* Remove entries from the pool: */
@ -2557,14 +2554,9 @@ static int qeth_alloc_qdio_queues(struct qeth_card *card)
QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
return 0;
QETH_CARD_TEXT(card, 2, "inq");
card->qdio.in_q = qeth_alloc_qdio_queue();
if (!card->qdio.in_q)
goto out_nomem;
/* inbound buffer pool */
if (qeth_alloc_buffer_pool(card))
goto out_freeinq;
goto out_buffer_pool;
/* outbound */
for (i = 0; i < card->qdio.no_out_queues; ++i) {
@ -2605,10 +2597,7 @@ static int qeth_alloc_qdio_queues(struct qeth_card *card)
card->qdio.out_qs[i] = NULL;
}
qeth_free_buffer_pool(card);
out_freeinq:
qeth_free_qdio_queue(card->qdio.in_q);
card->qdio.in_q = NULL;
out_nomem:
out_buffer_pool:
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
return -ENOMEM;
}
@ -2623,11 +2612,12 @@ static void qeth_free_qdio_queues(struct qeth_card *card)
qeth_free_cq(card);
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
if (card->qdio.in_q->bufs[j].rx_skb)
if (card->qdio.in_q->bufs[j].rx_skb) {
consume_skb(card->qdio.in_q->bufs[j].rx_skb);
card->qdio.in_q->bufs[j].rx_skb = NULL;
}
}
qeth_free_qdio_queue(card->qdio.in_q);
card->qdio.in_q = NULL;
/* inbound buffer pool */
qeth_free_buffer_pool(card);
/* free outbound qdio_qs */
@ -6447,6 +6437,12 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev)
qeth_determine_capabilities(card);
qeth_set_blkt_defaults(card);
card->qdio.in_q = qeth_alloc_qdio_queue();
if (!card->qdio.in_q) {
rc = -ENOMEM;
goto err_rx_queue;
}
card->qdio.no_out_queues = card->dev->num_tx_queues;
rc = qeth_update_from_chp_desc(card);
if (rc)
@ -6473,6 +6469,8 @@ static int qeth_core_probe_device(struct ccwgroup_device *gdev)
err_setup_disc:
err_chp_desc:
qeth_free_qdio_queue(card->qdio.in_q);
err_rx_queue:
free_netdev(card->dev);
err_card:
qeth_core_free_card(card);
@ -6494,6 +6492,7 @@ static void qeth_core_remove_device(struct ccwgroup_device *gdev)
qeth_free_qdio_queues(card);
qeth_free_qdio_queue(card->qdio.in_q);
free_netdev(card->dev);
qeth_core_free_card(card);
put_device(&gdev->dev);