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authorJulian Wiedmann <jwi@linux.ibm.com>2021-11-18 19:06:02 +0300
committerDavid S. Miller <davem@davemloft.net>2021-11-19 14:12:29 +0300
commit832585d2172fdaa29ee6497a94c0b9da0ab97eec (patch)
tree1fb8a4e6ed84d431cd53f2cea01ee4ad2e63f34e /drivers/s390
parent2edc4bf666c1f641ea524751c35657e76ce353d8 (diff)
downloadlinux-832585d2172fdaa29ee6497a94c0b9da0ab97eec.tar.xz
s390/qeth: allocate RX queue at probe time
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>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/net/qeth_core_main.c35
1 files changed, 17 insertions, 18 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 26c55f67289f..d32aa8b705db 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -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 @@ out_freeoutq:
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);