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Matthieu Baerts (NGI0) 833d4313bc mptcp: reset blackhole on success with non-loopback ifaces 
When a first MPTCP connection gets successfully established after a
blackhole period, 'active_disable_times' was supposed to be reset when
this connection was done via any non-loopback interfaces.

Unfortunately, the opposite condition was checked: only reset when the
connection was established via a loopback interface. Fixing this by
simply looking at the opposite.

This is similar to what is done with TCP FastOpen, see
tcp_fastopen_active_disable_ofo_check().

This patch is a follow-up of a previous discussion linked to commit
893c49a78d ("mptcp: Use __sk_dst_get() and dst_dev_rcu() in
mptcp_active_enable()."), see [1].

Fixes: 27069e7cb3 ("mptcp: disable active MPTCP in case of blackhole")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/4209a283-8822-47bd-95b7-87e96d9b7ea3@kernel.org [1]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250918-net-next-mptcp-blackhole-reset-loopback-v1-1-bf5818326639@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
History 2025-09-19 07:06:19 -07:00
..
6lowpan net: replace ND_PRINTK with dynamic debug 2025-07-10 15:27:32 -07:00
9p netfs: Fix the request's work item to not require a ref 2025-05-21 14:35:20 +02:00
802 treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
8021q net: s/dev_close_many/netif_close_many/ 2025-07-18 17:27:47 -07:00
appletalk Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-07-24 11:10:46 -07:00
atm net: atm: fix memory leak in atm_register_sysfs when device_register fail 2025-09-04 09:53:44 +02:00
ax25 ax25: properly unshare skbs in ax25_kiss_rcv() 2025-09-03 17:06:30 -07:00
batman-adv batman-adv: remove includes for extern declarations 2025-09-05 15:11:02 +02:00
bluetooth Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen() 2025-08-29 14:51:06 -04:00
bpf bpf: Add attach_type field to bpf_link 2025-07-11 10:51:55 -07:00
bridge netfilter pull request nf-next-25-09-11 2025-09-12 17:06:25 -07:00
caif caif: Replace memset(0) + strscpy() with strscpy_pad() 2025-08-12 14:08:56 -07:00
can can: j1939: j1939_local_ecu_get(): undo increment when j1939_local_ecu_get() fails 2025-09-10 17:12:05 +02:00
ceph libceph: fix invalid accesses to ceph_connection_v1_info 2025-09-10 21:22:56 +02:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-18 11:26:06 -07:00
dcb dcb: Use rtnl_register_many(). 2024-10-15 18:52:26 -07:00
devlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-18 11:26:06 -07:00
dns_resolver Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
dsa net: s/dev_close_many/netif_close_many/ 2025-07-18 17:27:47 -07:00
ethernet ethernet: Extend device_get_mac_address() to use NVMEM 2025-09-15 18:34:08 -07:00
ethtool Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-18 11:26:06 -07:00
handshake net/handshake: Add new parameter 'HANDSHAKE_A_ACCEPT_KEYRING' 2025-07-08 15:31:44 +02:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-11 17:40:13 -07:00
ieee802154 treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
ife net: sched: ife: fix potential use-after-free 2023-12-15 10:50:18 +00:00
ipv4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-18 11:26:06 -07:00
ipv6 Merge branch 'add-basic-psp-encryption-for-tcp-connections' 2025-09-18 12:38:34 +02:00
iucv net: add sk_drops_read(), sk_drops_inc() and sk_drops_reset() helpers 2025-08-28 13:14:50 +02:00
kcm net: kcm: Fix race condition in kcm_unattach() 2025-08-13 18:18:33 -07:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-07-24 11:10:46 -07:00
l2tp l2tp: do not use sock_hold() in pppol2tp_session_get_sock() 2025-08-27 17:16:13 -07:00
l3mdev net: fib_rules: Fix iif / oif matching on L3 master device 2025-04-15 17:54:56 -07:00
lapb treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
llc net: make sk->sk_rcvtimeo lockless 2025-06-23 17:05:12 -07:00
mac80211 Plenty of things going on, notably: 2025-09-11 17:50:46 -07:00
mac802154 mac802154: Switch to use hrtimer_setup() 2025-02-18 10:35:44 +01:00
mctp net: mctp: fix typo in comment 2025-09-08 17:47:57 -07:00
mpls net: s/dev_get_flags/netif_get_flags/ 2025-07-18 17:27:47 -07:00
mptcp mptcp: reset blackhole on success with non-loopback ifaces 2025-09-19 07:06:19 -07:00
ncsi net: ncsi: Fix buffer overflow in fetching version id 2025-06-12 18:21:59 -07:00
netfilter netfilter pull request nf-next-25-09-11 2025-09-12 17:06:25 -07:00
netlabel calipso: unlock rcu before returning -EAFNOSUPPORT 2025-06-05 08:03:38 -07:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-11 17:40:13 -07:00
netrom treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-06-19 13:00:24 -07:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-04-26 12:20:01 +02:00
openvswitch net: openvswitch: Use for_each_cpu() where appropriate 2025-08-20 19:47:22 -07:00
packet net: af_packet: Use hrtimer to do the retire operation 2025-09-11 18:40:06 -07:00
phonet net: add sk_drops_read(), sk_drops_inc() and sk_drops_reset() helpers 2025-08-28 13:14:50 +02:00
psample psample: adjust size if rate_as_probability is set 2024-12-18 19:23:04 -08:00
psp psp: do not use sk_dst_get() in psp_dev_get_for_sock() 2025-09-19 07:05:26 -07:00
qrtr net: qrtr: Update packets cloning when broadcasting 2024-09-24 10:48:16 +02:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-18 11:26:06 -07:00
rfkill net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer 2025-09-17 12:37:05 +02:00
rose net: rose: fix a typo in rose_clear_routes() 2025-08-27 17:27:52 -07:00
rxrpc rxrpc: Fix untrusted unsigned subtract 2025-09-14 13:05:22 -07:00
sched net_sched: act: remove tcfa_qstats 2025-09-02 15:52:24 -07:00
sctp sctp: snmp: do not use SNMP_MIB_SENTINEL anymore 2025-09-08 18:06:21 -07:00
shaper net: add netdev_lock() / netdev_unlock() helpers 2025-01-15 19:13:33 -08:00
smc smc: Use __sk_dst_get() and dst_dev_rcu() in smc_vlan_by_tcpsk(). 2025-09-17 18:10:22 -07:00
strparser net: make sk->sk_rcvtimeo lockless 2025-06-23 17:05:12 -07:00
sunrpc SUNRPC: call xs_sock_process_cmsg for all cmsg 2025-09-06 16:51:26 -04:00
switchdev net: switchdev: Convert blocking notification chain to a raw one 2025-03-11 11:30:28 +01:00
tipc net: add sk_drops_read(), sk_drops_inc() and sk_drops_reset() helpers 2025-08-28 13:14:50 +02:00
tls Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-18 11:26:06 -07:00
unix Networking changes for 6.17. 2025-07-30 08:58:55 -07:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-08-29 11:48:01 -07:00
wireless Plenty of things going on, notably: 2025-09-11 17:50:46 -07:00
x25 net/x25: Remove unused x25_terminate_link() 2025-07-14 17:19:13 -07:00
xdp xsk: Fix immature cq descriptor production 2025-09-09 15:09:55 -07:00
xfrm xfrm: snmp: do not use SNMP_MIB_SENTINEL anymore 2025-09-08 18:06:21 -07:00
compat.c file: stop exposing receive_fd_user() 2023-12-12 14:24:14 +01:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig psp: base PSP device support 2025-09-18 12:32:06 +02:00
Kconfig.debug rtnetlink: Add per-netns RTNL. 2024-10-08 15:16:59 +02:00
Makefile psp: base PSP device support 2025-09-18 12:32:06 +02:00
socket.c net: annotate races around sk->sk_uid 2025-06-23 17:04:03 -07:00
sysctl_net.c sysctl: Remove check for sentinel element in ctl_table arrays 2024-06-13 10:50:52 +02:00