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8ab183deb2
kernel_optimize_test/net
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Paolo Abeni 8ab183deb2 mptcp: cope with later TCP fallback 
With MPTCP v1, passive connections can fallback to TCP after the
subflow becomes established:

syn + MP_CAPABLE ->
               <- syn, ack + MP_CAPABLE

ack, seq = 3    ->
        // OoO packet is accepted because in-sequence
        // passive socket is created, is in ESTABLISHED
	// status and tentatively as MP_CAPABLE

ack, seq = 2     ->
        // no MP_CAPABLE opt, subflow should fallback to TCP

We can't use the 'subflow' socket fallback, as we don't have
it available for passive connection.

Instead, when the fallback is detected, replace the mptcp
socket with the underlying TCP subflow. Beyond covering
the above scenario, it makes a TCP fallback socket as efficient
as plain TCP ones.

Co-developed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-24 13:44:08 +01:00
..
6lowpan
9p
802 treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-01-09 12:13:43 -08:00
appletalk
atm netdev: pass the stuck queue to the timeout handler 2019-12-12 21:38:57 -08:00
ax25 net: Make sock protocol value checks more specific 2020-01-09 18:41:40 -08:00
batman-adv Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2020-01-19 22:10:04 +01:00
bluetooth netdev: pass the stuck queue to the timeout handler 2019-12-12 21:38:57 -08:00
bpf bpf: Allow to change skb mark in test_run 2019-12-18 17:05:58 -08:00
bpfilter
bridge net: bridge: vlan: add per-vlan state 2020-01-24 12:58:14 +01:00
caif
can can: j1939: j1939_sk_bind(): take priv after lock is held 2019-12-08 11:52:02 +01:00
ceph
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-01-23 08:10:16 +01:00
dcb
dccp treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
decnet net: Make sock protocol value checks more specific 2020-01-09 18:41:40 -08:00
dns_resolver
dsa Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2020-01-19 22:10:04 +01:00
ethernet
ethtool ethtool: potential NULL dereference in strset_prepare_data() 2020-01-08 16:03:35 -08:00
hsr net/hsr: remove seq_nr_after_or_eq 2020-01-21 12:03:21 +01:00
ieee802154
ife
ipv4 mptcp: parse and emit MP_CAPABLE option according to v1 spec 2020-01-24 13:44:08 +01:00
ipv6 mptcp: Handle MP_CAPABLE options for outgoing connections 2020-01-24 13:44:07 +01:00
iucv treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
kcm
key
l2tp l2tp: Remove redundant BUG_ON() check in l2tp_pernet 2020-01-03 12:26:07 -08:00
l3mdev
lapb
llc llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c) 2019-12-20 21:19:36 -08:00
mac80211 Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2020-01-19 22:10:04 +01:00
mac802154
mpls
mptcp mptcp: cope with later TCP fallback 2020-01-24 13:44:08 +01:00
ncsi net/ncsi: Support for multi host mellanox card 2020-01-09 18:36:22 -08:00
netfilter Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2020-01-19 22:10:04 +01:00
netlabel
netlink treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
netrom
nfc net: nfc: nci: fix a possible sleep-in-atomic-context bug in nci_uart_tty_receive() 2019-12-18 11:57:33 -08:00
nsh
openvswitch net: openvswitch: use skb_list_walk_safe helper for gso segments 2020-01-14 11:48:41 -08:00
packet af_packet: refactoring code for prb_calc_retire_blk_tmo 2019-12-26 15:19:59 -08:00
phonet net: Remove redundant BUG_ON() check in phonet_pernet 2020-01-03 12:25:50 -08:00
psample
qrtr net: qrtr: Remove receive worker 2020-01-14 18:36:42 -08:00
rds net/rds: Use prefetch for On-Demand-Paging MR 2020-01-18 11:48:19 +02:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2019-12-16 10:15:49 +01:00
rose net/rose: remove redundant assignment to variable failed 2020-01-07 13:52:28 -08:00
rxrpc RxRPC fixes 2019-12-24 16:12:47 -08:00
sched net: sched: add Flow Queue PIE packet scheduler 2020-01-23 11:38:31 +01:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-01-09 12:13:43 -08:00
smc net/smc: allow unprivileged users to read pnet table 2020-01-21 11:39:56 +01:00
strparser
sunrpc xprtrdma: Fix oops in Receive handler after device removal 2020-01-14 13:30:24 -05:00
switchdev
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-01-09 12:13:43 -08:00
tls Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2020-01-19 22:10:04 +01:00
unix Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2020-01-21 12:18:20 +01:00
vmw_vsock Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2020-01-19 22:10:04 +01:00
wimax
wireless Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2020-01-19 22:10:04 +01:00
x25 net/x25: fix nonblocking connect 2020-01-09 18:39:33 -08:00
xdp xsk, net: Make sock_def_readable() have external linkage 2020-01-22 00:08:52 +01:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2020-01-21 12:18:20 +01:00
compat.c
Kconfig mptcp: Add MPTCP socket stubs 2020-01-24 13:44:07 +01:00
Makefile mptcp: Add MPTCP socket stubs 2020-01-24 13:44:07 +01:00
socket.c socket: fix unused-function warning 2020-01-08 15:02:21 -08:00
sysctl_net.c