Alexandra Winter a1b4ed4125 s390/qeth: Fix potential loss of L3-IP@ in case of network issues ... commit 2fe8a23643 upstream. 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-02-23 09:25:15 +01:00
..
block	s390/scm: fix virtual vs physical address confusion	2024-01-20 11:51:44 +01:00
char	more s390 updates for 6.6 merge window	2023-09-07 10:52:13 -07:00
cio	s390/cio: fix a memleak in css_alloc_subchannel	2023-10-16 13:03:05 +02:00
crypto	s390/vfio-ap: fix sysfs status attribute for AP queue devices	2024-02-05 20:14:17 +00:00
net	s390/qeth: Fix potential loss of L3-IP@ in case of network issues	2024-02-23 09:25:15 +01:00
scsi	scsi: zfcp: Fix a double put in zfcp_port_enqueue()	2023-09-27 11:31:20 -04:00
virtio	s390/airq: remove lsi_mask from airq_struct	2023-08-30 11:03:28 +02:00
Makefile	…