diff options
| author | Ursula Braun <ursula.braun@de.ibm.com> | 2011-08-08 01:33:48 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-08-13 01:10:15 -0700 |
| commit | 99558ea93ce885ab191df2bf8ef964880e3b34a7 (patch) | |
| tree | 269d366d8db7f974d27edd569f56c748cb095575 | |
| parent | 1d31f52e38dfaf8bd07a6901c86fdd45e03eed24 (diff) | |
| download | lwn-99558ea93ce885ab191df2bf8ef964880e3b34a7.tar.gz lwn-99558ea93ce885ab191df2bf8ef964880e3b34a7.zip | |
qeth: do not apply priority queuing to HiperSockets
OSA cards can be configured to support 1 or 4 output queues. This
does not apply to HiperSockets. This patch limits determination of
the configured number of output queues to OSA cards only, but excludes
HiperSockets.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 40 |
1 files changed, 21 insertions, 19 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 4550573c25e5..2b0fb056a51f 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -995,27 +995,29 @@ static void qeth_get_channel_path_desc(struct qeth_card *card) ccwdev = card->data.ccwdev; chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0); if (chp_dsc != NULL) { - /* CHPP field bit 6 == 1 -> single queue */ - if ((chp_dsc->chpp & 0x02) == 0x02) { - if ((atomic_read(&card->qdio.state) != - QETH_QDIO_UNINITIALIZED) && - (card->qdio.no_out_queues == 4)) - /* change from 4 to 1 outbound queues */ - qeth_free_qdio_buffers(card); - card->qdio.no_out_queues = 1; - if (card->qdio.default_out_queue != 0) - dev_info(&card->gdev->dev, + if (card->info.type != QETH_CARD_TYPE_IQD) { + /* CHPP field bit 6 == 1 -> single queue */ + if ((chp_dsc->chpp & 0x02) == 0x02) { + if ((atomic_read(&card->qdio.state) != + QETH_QDIO_UNINITIALIZED) && + (card->qdio.no_out_queues == 4)) + /* change from 4 to 1 outbound queues */ + qeth_free_qdio_buffers(card); + card->qdio.no_out_queues = 1; + if (card->qdio.default_out_queue != 0) + dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); - card->qdio.default_out_queue = 0; - } else { - if ((atomic_read(&card->qdio.state) != - QETH_QDIO_UNINITIALIZED) && - (card->qdio.no_out_queues == 1)) { - /* change from 1 to 4 outbound queues */ - qeth_free_qdio_buffers(card); - card->qdio.default_out_queue = 2; + card->qdio.default_out_queue = 0; + } else { + if ((atomic_read(&card->qdio.state) != + QETH_QDIO_UNINITIALIZED) && + (card->qdio.no_out_queues == 1)) { + /* change from 1 to 4 outbound queues */ + qeth_free_qdio_buffers(card); + card->qdio.default_out_queue = 2; + } + card->qdio.no_out_queues = 4; } - card->qdio.no_out_queues = 4; } card->info.func_level = 0x4100 + chp_dsc->desc; kfree(chp_dsc); |