diff options
| author | Julian Wiedmann <jwi@linux.ibm.com> | 2020-10-01 20:11:30 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-10-03 02:22:49 +0300 |
| commit | bb5ab541942eaee4c5e175a4667df38cfc7da371 (patch) | |
| tree | 26cf4e953371196af700f9cc38c3274891ebd074 /drivers/s390/net/qeth_l2_main.c | |
| parent | 14c914fcb515c424177bb6848cc2858ebfe717a8 (diff) | |
| download | linux-bb5ab541942eaee4c5e175a4667df38cfc7da371.tar.xz | |
s390/qeth: keep track of wanted TX queues
When re-initializing a device, we can hit a situation where
qeth_osa_set_output_queues() detects that it supports more or less
HW TX queues than before. Right now we adjust dev->real_num_tx_queues
from right there, but
1. it's getting more & more complicated to cover all cases, and
2. we can't re-enable the actually expected number of TX queues later
because we lost the needed information.
So keep track of the wanted TX queues (on initial setup, and whenever
its changed via .set_channels), and later use that information when
re-enabling the netdevice.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net/qeth_l2_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 1852d0a3c10a..290389fc7e79 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -894,18 +894,12 @@ static const struct net_device_ops qeth_osn_netdev_ops = { static int qeth_l2_setup_netdev(struct qeth_card *card) { - int rc; - if (IS_OSN(card)) { card->dev->netdev_ops = &qeth_osn_netdev_ops; card->dev->flags |= IFF_NOARP; goto add_napi; } - rc = qeth_setup_netdev(card); - if (rc) - return rc; - card->dev->needed_headroom = sizeof(struct qeth_hdr); card->dev->netdev_ops = &qeth_l2_netdev_ops; card->dev->priv_flags |= IFF_UNICAST_FLT; @@ -2274,6 +2268,13 @@ static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok) netif_carrier_on(dev); } else { rtnl_lock(); + rc = qeth_set_real_num_tx_queues(card, + qeth_tx_actual_queues(card)); + if (rc) { + rtnl_unlock(); + goto err_set_queues; + } + if (carrier_ok) netif_carrier_on(dev); else @@ -2291,6 +2292,7 @@ static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok) } return 0; +err_set_queues: err_setup: qeth_set_allowed_threads(card, 0, 1); card->state = CARD_STATE_DOWN; |