kernel/git/stable/linux.git/drivers/s390/net, branch linux-3.2.y

s390/qeth: free netdevice when removing a card

2018-05-31T23:30:24+00:00

commit 6be687395b3124f002a653c1a50b3260222b3cd7 upstream. On removal, a qeth card's netdevice is currently not properly freed because the call chain looks as follows: qeth_core_remove_device(card) lx_remove_device(card) unregister_netdev(card->dev) card->dev = NULL !!! qeth_core_free_card(card) if (card->dev) !!! free_netdev(card->dev) Fix it by free'ing the netdev straight after unregistering. This also fixes the sysfs-driven layer switch case (qeth_dev_layer2_store()), where the need to free the current netdevice was not considered at all. Note that free_netdev() takes care of the netif_napi_del() for us too. Fixes: 4a71df50047f ("qeth: new qeth device driver") Signed-off-by: Julian Wiedmann Reviewed-by: Ursula Braun Signed-off-by: David S. Miller [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings

s390/qeth: fix SETIP command handling

2018-05-31T23:30:13+00:00

commit 1c5b2216fbb973a9410e0b06389740b5c1289171 upstream. send_control_data() applies some special handling to SETIP v4 IPA commands. But current code parses *all* command types for the SETIP command code. Limit the command code check to IPA commands. Fixes: 5b54e16f1a54 ("qeth: do not spin for SETIP ip assist command") Signed-off-by: Julian Wiedmann Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings

qeth: delete napi struct when removing a qeth device

2016-08-22T21:37:18+00:00

commit 7831b4ff0d926e0deeaabef9db8800ed069a2757 upstream. A qeth_card contains a napi_struct linked to the net_device during device probing. This struct must be deleted when removing the qeth device, otherwise Panic on oops can occur when qeth devices are repeatedly removed and added. Fixes: a1c3ed4c9ca ("qeth: NAPI support for l2 and l3 discipline") Signed-off-by: Ursula Braun Tested-by: Alexander Klein Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings

qeth: avoid buffer overflow in snmp ioctl

2014-01-03T04:33:18+00:00

commit 6fb392b1a63ae36c31f62bc3fc8630b49d602b62 upstream. Check user-defined length in snmp ioctl request and allow request only if it fits into a qeth command buffer. Signed-off-by: Ursula Braun Signed-off-by: Frank Blaschka Reviewed-by: Heiko Carstens Reported-by: Nico Golde Reported-by: Fabian Yamaguchi Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings

qeth: Reduce CPU consumption through less SIGA-r calls

2011-11-16T22:28:20+00:00

Patch avoids SIGA-r calls in case of SIGA-r required. It only calls SIGA-r if a threshold of free buffer is reached. CPU consumption is reduced as a consequence. Signed-off-by: Einar Lueck Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller

qeth: l3 fix rcu splat in xmit

2011-11-16T22:28:14+00:00

when use dst_get_neighbour to get neighbour, we need rcu_read_lock to protect, since dst_get_neighbour uses rcu_dereference. Signed-off-by: David S. Miller

netiucv: reinsert dev_alloc_name for device naming

2011-11-16T22:28:10+00:00

Invocation of dev_alloc_name() is re-inserted, because the created net_device name is used to create the device name for the iucv bus. This device is created before the register_netdev call. Signed-off-by: Ursula Braun Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller

qeth: remove WARN_ON leftover

2011-11-16T22:28:04+00:00

The patch "qeth: exploit asynchronous delivery of storage blocks" added a WARN_ON in qeth_schedule_recovery. A device recovery should not cause a kernel warning. This is obviously a debugging left-over that we forgot to remove. Signed-off-by: Christian Borntraeger Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller

qeth: return with -EPERM if sniffing is not enabled

2011-11-16T22:27:59+00:00

Without appropriate configuration at the SE, a HiperSockets device cannot be used for sniffing. Setting the sniffer attribute is rejected with -EPERM. Signed-off-by: Ursula Braun Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller

net: Fix references to deleted NET_ETHERNET Kconfig setting.

2011-11-10T00:26:53+00:00

Change them over to plain "ETHERNET" Reported-by: Paul Bolle Signed-off-by: David S. Miller Acked-by: Jeff Kirsher