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Julian Wiedmann a6c3d93963 s390/qeth: on channel error, reject further cmd requests 
When the IRQ handler determines that one of the cmd IO channels has
failed and schedules recovery, block any further cmd requests from
being submitted. The request would inevitably stall, and prevent the
recovery from making progress until the request times out.

This sort of error was observed after Live Guest Relocation, where
the pending IO on the READ channel intentionally gets terminated to
kick-start recovery. Simultaneously the guest executed SIOCETHTOOL,
triggering qeth to issue a QUERY CARD INFO command. The command
then stalled in the inoperabel WRITE channel.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2018-03-22 11:52:30 -04:00
..
Kconfig s390/qeth: drop CONFIG_QETH_IPV6 2017-12-20 15:23:44 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_dbug.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_dbug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_fsms.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_fsms.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_main.c s390: net: add SPDX identifiers to the remaining files 2017-11-24 14:28:43 +01:00
ctcm_main.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_mpc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_mpc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_sysfs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fsm.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-30 08:13:36 -08:00
fsm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
lcs.c net: convert lcs_reply.refcnt from atomic_t to refcount_t 2017-12-20 15:23:44 -05:00
lcs.h net: convert lcs_reply.refcnt from atomic_t to refcount_t 2017-12-20 15:23:44 -05:00
netiucv.c s390: drivers: Remove redundant license text 2017-11-24 14:28:47 +01:00
qeth_core.h s390/qeth: fix SETIP command handling 2018-02-09 14:30:23 -05:00
qeth_core_main.c s390/qeth: on channel error, reject further cmd requests 2018-03-22 11:52:30 -04:00
qeth_core_mpc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
qeth_core_mpc.h s390/qeth: use ether_addr_* helpers 2017-12-20 15:23:45 -05:00
qeth_core_sys.c s390: net: add SPDX identifiers to the remaining files 2017-11-24 14:28:43 +01:00
qeth_l2.h s390/qeth: use ether_addr_* helpers 2017-12-20 15:23:45 -05:00
qeth_l2_main.c s390/qeth: free netdevice when removing a card 2018-03-22 11:52:30 -04:00
qeth_l2_sys.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-11-04 09:26:51 +09:00
qeth_l3.h s390/qeth: fix IP address lookup for L3 devices 2018-02-28 11:13:12 -05:00
qeth_l3_main.c s390/qeth: free netdevice when removing a card 2018-03-22 11:52:30 -04:00
qeth_l3_sys.c s390/qeth: use common helper to display rxip/vipa 2018-01-02 13:52:22 -05:00
smsgiucv.c s390: drivers: Remove redundant license text 2017-11-24 14:28:47 +01:00
smsgiucv.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
smsgiucv_app.c s390: net: add SPDX identifiers to the remaining files 2017-11-24 14:28:43 +01:00