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89271c65ed
linux/drivers/s390/net
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Ursula Braun 89271c65ed s390/qeth: fix underestimated count of buffer elements 
For a memory range/skb where the last byte falls onto a page boundary
(ie. 'end' is of the form xxx...xxx001), the PFN_UP() part of the
calculation currently doesn't round up to the next PFN due to an
off-by-one error.
Thus qeth believes that the skb occupies one page less than it
actually does, and may select a IO buffer that doesn't have enough spare
buffer elements to fit all of the skb's data.
HW detects this as a malformed buffer descriptor, and raises an
exception which then triggers device recovery.

Fixes: 2863c61334 ("qeth: refactor calculation of SBALE count")
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-09 14:30:23 -05:00
..
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
Kconfig s390/qeth: drop CONFIG_QETH_IPV6 2017-12-20 15:23:44 -05:00
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
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netiucv.c s390: drivers: Remove redundant license text 2017-11-24 14:28:47 +01:00
qeth_core_main.c s390/qeth: support early setup for z/VM NICs 2018-01-02 13:52:23 -05:00
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_core.h s390/qeth: fix underestimated count of buffer elements 2018-02-09 14:30:23 -05:00
qeth_l2_main.c s390/qeth: align L2 and L3 set_rx_mode() implementations 2017-12-20 15:23:45 -05:00
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_l2.h s390/qeth: use ether_addr_* helpers 2017-12-20 15:23:45 -05:00
qeth_l3_main.c s390/qeth: improve error reporting on IP add/removal 2018-01-02 13:52:22 -05:00
qeth_l3_sys.c s390/qeth: use common helper to display rxip/vipa 2018-01-02 13:52:22 -05:00
qeth_l3.h s390/qeth: improve error reporting on IP add/removal 2018-01-02 13:52:22 -05:00
smsgiucv_app.c s390: net: add SPDX identifiers to the remaining files 2017-11-24 14:28:43 +01:00
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