Jiri Bohac a6d95c5a62 Revert "xfrm: xfrm_state_mtu should return at least 1280 for ipv6" ... This reverts commit b515d26372. Commit b515d26372 ("xfrm: xfrm_state_mtu should return at least 1280 for ipv6") in v5.14 breaks the TCP MSS calculation in ipsec transport mode, resulting complete stalls of TCP connections. This happens when the (P)MTU is 1280 or slighly larger. The desired formula for the MSS is: MSS = (MTU - ESP_overhead) - IP header - TCP header However, the above commit clamps the (MTU - ESP_overhead) to a minimum of 1280, turning the formula into MSS = max(MTU - ESP overhead, 1280) - IP header - TCP header With the (P)MTU near 1280, the calculated MSS is too large and the resulting TCP packets never make it to the destination because they are over the actual PMTU. The above commit also causes suboptimal double fragmentation in xfrm tunnel mode, as described in https://lore.kernel.org/netdev/20210429202529.codhwpc7w6kbudug@dwarf.suse.cz/ The original problem the above commit was trying to fix is now fixed by commit 6596a02295 ("xfrm: fix MTU regression"). Signed-off-by: Jiri Bohac <jbohac@suse.cz> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>		2022-01-27 07:34:06 +01:00
..
6lowpan
9p	virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes	2022-01-18 10:05:48 +02:00
802	net: 802: Use memset_startat() to clear struct fields	2021-11-19 11:23:23 +00:00
8021q	vlan: add net device refcount tracker	2021-12-07 20:44:58 -08:00
appletalk
atm	net: atm: use address setting helpers	2021-10-24 13:59:45 +01:00
ax25	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-09 17:00:17 -08:00
batman-adv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-05 14:36:10 -08:00
bluetooth	Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2022-01-17 05:49:30 +02:00
bpf	bpf: Add dummy BPF STRUCT_OPS for test purpose	2021-11-01 14:10:00 -07:00
bpfilter
bridge	net: bridge: fix net device refcount tracking issue in error path	2022-01-12 14:44:18 +00:00
caif	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-12-31 14:35:40 +00:00
can	can: isotp: convert struct tpcon::{idx,len} to unsigned int	2022-01-05 21:49:47 +01:00
ceph	mm: allow !GFP_KERNEL allocations for kvmalloc	2022-01-15 16:30:29 +02:00
core	net-procfs: show net devices bound packet types	2022-01-24 11:58:46 +00:00
dcb
dccp	dccp: Inline dccp_listen_start().	2021-11-23 20:16:22 -08:00
decnet	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-12-31 14:35:40 +00:00
dns_resolver
dsa	net: dsa: setup master before ports	2022-01-06 11:59:10 +00:00
ethernet	gro: remove rcu_read_lock/rcu_read_unlock from gro_complete handlers	2021-11-24 17:21:42 -08:00
ethtool	ethtool: use phydev variable	2022-01-06 12:33:35 +00:00
hsr	net: Write lock dev_base_lock without disabling bottom halves.	2021-11-29 12:12:36 +00:00
ieee802154	net: drop nopreempt requirement on sock_prot_inuse_add()	2021-11-16 13:20:45 +00:00
ife
ipv4	Revert "xfrm: xfrm_state_mtu should return at least 1280 for ipv6"	2022-01-27 07:34:06 +01:00
ipv6	Revert "xfrm: xfrm_state_mtu should return at least 1280 for ipv6"	2022-01-27 07:34:06 +01:00
iucv	net: Don't include filter.h from net/sock.h	2021-12-29 08:48:14 -08:00
kcm	net: Don't include filter.h from net/sock.h	2021-12-29 08:48:14 -08:00
key	xfrm: Check if_id in xfrm_migrate	2022-01-26 07:44:01 +01:00
l2tp	l2tp: add netns refcount tracker to l2tp_dfs_seq_data	2021-12-10 06:38:27 -08:00
l3mdev
lapb
llc	sock: Use sock_owned_by_user_nocheck() instead of sk_lock.owned.	2021-12-10 19:43:00 -08:00
mac80211	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-05 14:36:10 -08:00
mac802154	mac802154: use dev_addr_set() - manual	2021-10-20 14:27:40 +01:00
mctp	mctp: test: zero out sockaddr	2022-01-11 20:26:36 -08:00
mpls	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-12-02 11:44:56 -08:00
mptcp	mptcp: Use struct_group() to avoid cross-field memset()	2022-01-21 19:26:03 -08:00
ncsi	net/ncsi: check for error return from call to nla_put_u32	2021-12-29 17:53:24 -08:00
netfilter	netfilter: conntrack: don't increment invalid counter on NF_REPEAT	2022-01-16 00:55:27 +01:00
netlabel	lsm: security_task_getsecid_subj() -> security_current_getsecid_subj()	2021-11-22 17:52:47 -05:00
netlink	net: Don't include filter.h from net/sock.h	2021-12-29 08:48:14 -08:00
netrom	netrom: fix api breakage in nr_setsockopt()	2022-01-07 14:11:05 +00:00
nfc	Networking fixes for 5.17-rc1, including fixes from netfilter, bpf.	2022-01-20 10:57:05 +02:00
nsh
openvswitch	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-09 17:00:17 -08:00
packet	net: fix information leakage in /proc/net/ptype	2022-01-20 10:12:53 +00:00
phonet	phonet/pep: refuse to enable an unbound pipe	2021-12-20 11:49:51 +00:00
psample
qrtr	bus: mhi: core: Add an API for auto queueing buffers for DL channel	2021-12-17 17:17:14 +01:00
rds	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-12-16 16:13:19 -08:00
rfkill	rfkill: allow to get the software rfkill state	2021-12-20 11:02:38 +01:00
rose	net: Don't include filter.h from net/sock.h	2021-12-29 08:48:14 -08:00
rxrpc	rxrpc: Adjust retransmission backoff	2022-01-22 02:03:24 +00:00
sched	net: sched: Clarify error message when qdisc kind is unknown	2022-01-20 11:25:57 +00:00
sctp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-05 14:36:10 -08:00
smc	net/smc: Transitional solution for clcsock race issue	2022-01-24 12:06:08 +00:00
strparser	bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding	2021-11-09 01:05:28 +01:00
sunrpc	Highlights:	2022-01-16 07:42:58 +02:00
switchdev	net: switchdev: add net device refcount tracker	2021-12-07 20:44:58 -08:00
tipc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-05 14:36:10 -08:00
tls	net/tls: Fix another skb memory leak when running kTLS traffic	2022-01-17 13:07:47 +00:00
unix	af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress	2022-01-14 18:31:37 -08:00
vmw_vsock	virtio,vdpa,qemu_fw_cfg: features, cleanups, fixes	2022-01-18 10:05:48 +02:00
wireless	Kbuild updates for v5.17	2022-01-19 11:15:19 +02:00
x25	net: x25: drop harmless check of !more	2021-12-09 18:35:11 -08:00
xdp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2022-01-05 14:36:10 -08:00
xfrm	Revert "xfrm: xfrm_state_mtu should return at least 1280 for ipv6"	2022-01-27 07:34:06 +01:00
compat.c
devres.c
Kconfig	net: kunit: add a test for dev_addr_lists	2021-11-20 12:25:57 +00:00
Kconfig.debug	net: add networking namespace refcount tracker	2021-12-10 06:38:26 -08:00
Makefile
socket.c	net: fix SOF_TIMESTAMPING_BIND_PHC to work with multiple sockets	2022-01-06 12:18:08 +00:00
sysctl_net.c	sections: move and rename core_kernel_data() to is_kernel_core_data()	2021-11-09 10:02:50 -08:00