Alexandra Winter 3bc35da667 s390/qeth: Fix potential loss of L3-IP@ in case of network issues ... [ Upstream commit 2fe8a23643 ] Symptom: In case of a bad cable connection (e.g. dirty optics) a fast sequence of network DOWN-UP-DOWN-UP could happen. UP triggers recovery of the qeth interface. In case of a second DOWN while recovery is still ongoing, it can happen that the IP@ of a Layer3 qeth interface is lost and will not be recovered by the second UP. Problem: When registration of IP addresses with Layer 3 qeth devices fails, (e.g. because of bad address format) the respective IP address is deleted from its hash-table in the driver. If registration fails because of a ENETDOWN condition, the address should stay in the hashtable, so a subsequent recovery can restore it. 3caa4af834 ("qeth: keep ip-address after LAN_OFFLINE failure") fixes this for registration failures during normal operation, but not during recovery. Solution: Keep L3-IP address in case of ENETDOWN in qeth_l3_recover_ip(). For consistency with qeth_l3_add_ip() we also keep it in case of EADDRINUSE, i.e. for some reason the card already/still has this address registered. Fixes: 4a71df5004 ("qeth: new qeth device driver") Cc: stable@vger.kernel.org Signed-off-by: Alexandra Winter <wintera@linux.ibm.com> Link: https://lore.kernel.org/r/20240206085849.2902775-1-wintera@linux.ibm.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-03-01 13:13:34 +01:00
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block	s390/scm: fix virtual vs physical address confusion	2024-01-25 14:34:20 -08:00
char	s390/zcore: fix race when reading from hardware system area	2022-08-25 11:18:05 +02:00
cio	s390/cio: unregister device when the only path is gone	2023-06-28 10:18:41 +02:00
crypto	s390/zcrypt: don't leak memory if dev_set_name() fails	2023-09-23 10:59:59 +02:00
net	s390/qeth: Fix potential loss of L3-IP@ in case of network issues	2024-03-01 13:13:34 +01:00
scsi	scsi: zfcp: Fix a double put in zfcp_port_enqueue()	2023-10-10 21:46:42 +02:00
virtio	virtio/s390: implement virtio-ccw revision 2 correctly	2021-03-04 10:26:50 +01:00
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