Cambda Zhu 34dfde4ad8 tcp: Return user_mss for TCP_MAXSEG in CLOSE/LISTEN state if user_mss set ... This patch replaces the tp->mss_cache check in getting TCP_MAXSEG with tp->rx_opt.user_mss check for CLOSE/LISTEN sock. Since tp->mss_cache is initialized with TCP_MSS_DEFAULT, checking if it's zero is probably a bug. With this change, getting TCP_MAXSEG before connecting will return default MSS normally, and return user_mss if user_mss is set. Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Reported-by: Jack Yang <mingliang@linux.alibaba.com> Suggested-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/netdev/CANn89i+3kL9pYtkxkwxwNMzvC_w3LNUum_2=3u+UyLBmGmifHA@mail.gmail.com/#t Signed-off-by: Cambda Zhu <cambda@linux.alibaba.com> Link: https://lore.kernel.org/netdev/14D45862-36EA-4076-974C-EA67513C92F6@linux.alibaba.com/ Reviewed-by: Jason Xing <kerneljasonxing@gmail.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20230527040317.68247-1-cambda@linux.alibaba.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-05-29 22:03:48 -07:00
..
6lowpan	6lowpan: Remove redundant initialisation.	2023-03-29 08:22:52 +01:00
9p	Including fixes from netfilter.	2023-05-05 19:12:01 -07:00
802
8021q	vlan: fix a potential uninit-value in vlan_dev_hard_start_xmit()	2023-05-17 12:55:39 +01:00
appletalk
atm	atm: hide unused procfs functions	2023-05-17 21:27:30 -07:00
ax25
batman-adv	net: vlan: introduce skb_vlan_eth_hdr()	2023-04-23 14:16:44 +01:00
bluetooth	Bluetooth: Unlink CISes when LE disconnects in hci_conn_del	2023-05-19 15:37:45 -07:00
bpf	bpf: add test_run support for netfilter program type	2023-04-21 11:34:50 -07:00
bpfilter
bridge	bridge: always declare tunnel functions	2023-05-17 21:28:58 -07:00
caif	net: caif: Fix use-after-free in cfusbl_device_notify()	2023-03-02 22:22:07 -08:00
can	can: j1939: recvmsg(): allow MSG_CMSG_COMPAT flag	2023-05-15 22:24:46 +02:00
ceph	Networking changes for 6.3.	2023-02-21 18:24:12 -08:00
core	bpf-for-netdev	2023-05-24 21:57:57 -07:00
dcb
dccp	netfilter: keep conntrack reference until IPsecv6 policy checks are done	2023-03-22 21:50:23 +01:00
devlink	devlink: Fix crash with CONFIG_NET_NS=n	2023-05-16 19:57:52 -07:00
dns_resolver
dsa	net: dsa: tag_ocelot: call only the relevant portion of __skb_vlan_pop() on TX	2023-04-23 14:16:45 +01:00
ethernet
ethtool	ethtool: Fix uninitialized number of lanes	2023-05-03 09:13:20 +01:00
handshake	net/handshake: Enable the SNI extension to work properly	2023-05-24 22:05:24 -07:00
hsr	hsr: ratelimit only when errors are printed	2023-03-16 21:11:03 -07:00
ieee802154	net: ieee802154: remove an unnecessary null pointer check	2023-03-17 09:13:53 +01:00
ife
ipv4	tcp: Return user_mss for TCP_MAXSEG in CLOSE/LISTEN state if user_mss set	2023-05-29 22:03:48 -07:00
ipv6	udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated().	2023-05-25 10:51:58 +02:00
iucv	net/iucv: Fix size of interrupt data	2023-03-16 17:34:40 -07:00
kcm
key	af_key: Reject optional tunnel/BEET mode templates in outbound policies	2023-05-10 07:04:51 +02:00
l2tp	l2tp: generate correct module alias strings	2023-03-31 09:25:12 +01:00
l3mdev
lapb
llc	net: deal with most data-races in sk_wait_event()	2023-05-10 10:03:32 +01:00
mac80211	wifi: mac80211: recalc chanctx mindef before assigning	2023-05-16 10:26:00 -07:00
mac802154	mac802154: Rename kfree_rcu() to kvfree_rcu_mightsleep()	2023-04-05 13:48:04 +00:00
mctp	mctp: remove MODULE_LICENSE in non-modules	2023-03-09 23:06:21 -08:00
mpls	net: mpls: fix stale pointer if allocation fails during device rename	2023-02-15 10:26:37 +00:00
mptcp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-04-20 16:29:51 -07:00
ncsi	net/ncsi: clear Tx enable mode when handling a Config required AEN	2023-04-28 09:35:33 +01:00
netfilter	netfilter: nft_set_rbtree: fix null deref on element insertion	2023-05-17 14:18:28 +02:00
netlabel
netlink	netlink: annotate accesses to nlk->cb_running	2023-05-10 09:28:38 +01:00
netrom	netrom: fix info-leak in nr_write_internal()	2023-05-25 21:02:29 -07:00
nfc	nfc: change order inside nfc_se_io error path	2023-03-07 13:37:05 -08:00
nsh	net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()	2023-05-15 08:40:27 +01:00
openvswitch	net: openvswitch: fix race on port output	2023-04-07 19:42:53 -07:00
packet	af_packet: do not use READ_ONCE() in packet_bind()	2023-05-29 22:03:48 -07:00
phonet
psample
qrtr	net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()	2023-04-13 09:35:30 +02:00
rds	rds: rds_rm_zerocopy_callback() correct order for list_add_tail()	2023-02-13 09:33:39 +00:00
rfkill	net: rfkill-gpio: Add explicit include for of.h	2023-04-06 20:36:27 +02:00
rose
rxrpc	Including fixes from netfilter.	2023-05-05 19:12:01 -07:00
sched	net/sched: flower: fix error handler on replace	2023-05-05 10:01:31 +01:00
sctp	sctp: fix an issue that plpmtu can never go to complete state	2023-05-22 11:05:20 +01:00
smc	net/smc: Reset connection when trying to use SMCRv2 fails.	2023-05-19 08:54:04 +01:00
strparser
sunrpc	NFS Client Bugfixes for Linux 6.4-rc	2023-05-22 12:01:13 -07:00
switchdev
tipc	tipc: check the bearer min mtu properly when setting it by netlink	2023-05-15 10:21:20 +01:00
tls	tls: improve lockless access safety of tls_err_abort()	2023-05-26 10:35:58 +01:00
unix	bpf, sockmap: Pass skb ownership through read_skb	2023-05-23 16:09:47 +02:00
vmw_vsock	bpf, sockmap: Pass skb ownership through read_skb	2023-05-23 16:09:47 +02:00
wireless	wifi: cfg80211: Drop entries with invalid BSSIDs in RNR	2023-05-16 10:09:50 -07:00
x25
xdp	bpf-next-for-netdev	2023-04-13 16:43:38 -07:00
xfrm	ipsec-2023-05-16	2023-05-16 20:52:35 -07:00
compat.c	net/compat: Update msg_control_is_user when setting a kernel pointer	2023-04-14 11:09:27 +01:00
devres.c
Kconfig	net/handshake: Add Kunit tests for the handshake consumer API	2023-04-19 18:48:48 -07:00
Kconfig.debug
Makefile	net/handshake: Create a NETLINK service for handling handshake requests	2023-04-19 18:48:48 -07:00
socket.c	net: annotate sk->sk_err write from do_recvmmsg()	2023-05-10 09:58:29 +01:00
sysctl_net.c