diff options
| author | Ursula Braun | 2009-01-05 02:35:18 +0100 |
|---|---|---|
| committer | David S. Miller | 2009-01-05 02:35:18 +0100 |
| commit | fc9c24603c4b93d84160e14c0a98a754d4328d15 (patch) | |
| tree | f90344411a906d8b9f06267c8dbc278c44588bdf /drivers/s390/net/qeth_core_main.c | |
| parent | qeth: exploit source MAC address for inbound layer3 packets (diff) | |
| download | kernel-qcow2-linux-fc9c24603c4b93d84160e14c0a98a754d4328d15.tar.gz kernel-qcow2-linux-fc9c24603c4b93d84160e14c0a98a754d4328d15.tar.xz kernel-qcow2-linux-fc9c24603c4b93d84160e14c0a98a754d4328d15.zip | |
qeth: avoid crash in case of layer mismatch for VSWITCH
For z/VM GuestLAN or VSWITCH devices the transport layer is
configured in z/VM. The layer2 attribute of a participating Linux
device has to match the z/VM definition. In case of a mismatch
Linux currently crashes in qeth recovery due to a reference to the
not yet existing net_device.
Solution: add a check for existence of net_device and add a message
pointing to the mismatch of layer definitions in Linux and z/VM.
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>
Diffstat (limited to 'drivers/s390/net/qeth_core_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 89867bc43f7a..ffe6960cb30a 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -572,6 +572,10 @@ static void qeth_send_control_data_cb(struct qeth_channel *channel, card = CARD_FROM_CDEV(channel->ccwdev); if (qeth_check_idx_response(iob->data)) { qeth_clear_ipacmd_list(card); + if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6) + dev_err(&card->gdev->dev, + "The qeth device is not configured " + "for the OSI layer required by z/VM\n"); qeth_schedule_recovery(card); goto out; } |