Jakub Kicinski 673edcffa0 net: check for altname conflicts when changing netdev's netns ... commit 7663d52209 upstream. It's currently possible to create an altname conflicting with an altname or real name of another device by creating it in another netns and moving it over: [ ~]$ ip link add dev eth0 type dummy [ ~]$ ip netns add test [ ~]$ ip -netns test link add dev ethX netns test type dummy [ ~]$ ip -netns test link property add dev ethX altname eth0 [ ~]$ ip -netns test link set dev ethX netns 1 [ ~]$ ip link ... 3: eth0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 02:40:88:62:ec:b8 brd ff:ff:ff:ff:ff:ff ... 5: ethX: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 26:b7:28:78:38:0f brd ff:ff:ff:ff:ff:ff altname eth0 Create a macro for walking the altnames, this hopefully makes it clearer that the list we walk contains only altnames. Which is otherwise not entirely intuitive. Fixes: 36fbf1e52b ("net: rtnetlink: add linkprop commands to add and delete alternative ifnames") Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-10-25 12:03:08 +02:00
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6lowpan
9p
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth
bpf
bpfilter
bridge
caif
can
ceph
core	net: check for altname conflicts when changing netdev's netns	2023-10-25 12:03:08 +02:00
dcb
dccp
devlink
dns_resolver
dsa
ethernet
ethtool
hsr
ieee802154
ife
ipv4	ipv4: fib: annotate races around nh->nh_saddr_genid and nh->nh_saddr	2023-10-25 12:03:07 +02:00
ipv6	net: ipv6: fix return value check in esp_remove_trailer	2023-10-25 12:03:06 +02:00
iucv
kcm
key
l2tp
l3mdev
lapb
llc
mac80211
mac802154
mctp
mpls
mptcp
ncsi
netfilter	netfilter: nf_tables: revert do not remove elements if set backend implements .abort	2023-10-25 12:03:07 +02:00
netlabel
netlink
netrom
nfc
nsh
openvswitch
packet
phonet
psample
qrtr
rds
rfkill	net: rfkill: gpio: prevent value glitch during probe	2023-10-25 12:03:06 +02:00
rose
rxrpc
sched	net/sched: sch_hfsc: upgrade 'rt' to 'sc' when it becomes a inner curve	2023-10-25 12:03:07 +02:00
sctp
smc
strparser
sunrpc
switchdev
tipc
tls
unix
vmw_vsock
wireless	wifi: cfg80211: use system_unbound_wq for wiphy work	2023-10-25 12:03:06 +02:00
x25
xdp
xfrm	xfrm: interface: use DEV_STATS_INC()	2023-10-25 12:03:06 +02:00
compat.c
devres.c
Kconfig
Kconfig.debug
Makefile
socket.c
sysctl_net.c