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linux-stable/net
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Gerd Bayer 30c3c4a449 net/smc: Use correct buffer sizes when switching between TCP and SMC 
Tuning of the effective buffer size through setsockopts was working for
SMC traffic only but not for TCP fall-back connections even before
commit 0227f058aa ("net/smc: Unbind r/w buffer size from clcsock and
make them tunable"). That change made it apparent that TCP fall-back
connections would use net.smc.[rw]mem as buffer size instead of
net.ipv4_tcp_[rw]mem.

Amend the code that copies attributes between the (TCP) clcsock and the
SMC socket and adjust buffer sizes appropriately:
- Copy over sk_userlocks so that both sockets agree on whether tuning
  via setsockopt is active.
- When falling back to TCP use sk_sndbuf or sk_rcvbuf as specified with
  setsockopt. Otherwise, use the sysctl value for TCP/IPv4.
- Likewise, use either values from setsockopt or from sysctl for SMC
  (duplicated) on successful SMC connect.

In smc_tcp_listen_work() drop the explicit copy of buffer sizes as that
is taken care of by the attribute copy.

Fixes: 0227f058aa ("net/smc: Unbind r/w buffer size from clcsock and make them tunable")
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: Gerd Bayer <gbayer@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-08-09 11:20:29 +01:00
..
6lowpan 6lowpan: Remove redundant initialisation. 2023-03-29 08:22:52 +01:00
9p 9p: remove dead stores (variable set again without being read) 2023-07-20 19:14:50 +00:00
802
8021q vlan: fix a potential uninit-value in vlan_dev_hard_start_xmit() 2023-05-17 12:55:39 +01:00
appletalk sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
atm sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
ax25 sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
batman-adv batman-adv: Broken sync while rescheduling delayed work 2023-05-26 23:14:49 +02:00
bluetooth Bluetooth: MGMT: Use correct address for memcpy() 2023-07-20 11:27:22 -07:00
bpf bpf: Move kernel test kfuncs to bpf_testmod 2023-05-16 22:09:24 -07:00
bpfilter net: Use umd_cleanup_helper() 2023-05-31 13:06:57 +02:00
bridge Revert "bridge: Add extack warning when enabling STP in netns." 2023-07-20 10:46:28 +02:00
caif sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
can net: annotate data-races around sk->sk_mark 2023-07-29 18:13:41 +01:00
ceph rbd: harden get_lock_owner_info() a bit 2023-07-26 15:08:09 +02:00
core net/unix: use consistent error code in SO_PEERPIDFD 2023-08-08 15:56:48 -07:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-01 21:07:46 -07:00
dccp dccp: fix data-race around dp->dccps_mss_cache 2023-08-04 18:27:58 -07:00
devlink devlink: report devlink_port_type_warn source device 2023-06-17 00:31:14 -07:00
dns_resolver
dsa net: dsa: fix older DSA drivers using phylink 2023-07-27 17:19:46 -07:00
ethernet
ethtool net: create device lookup API with reference tracking 2023-06-15 08:21:11 +01:00
handshake Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-06-15 22:19:41 -07:00
hsr net: hsr: Disable promiscuous mode in offload mode 2023-06-21 16:47:05 -07:00
ieee802154 sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
ife
ipv4 tunnels: fix kasan splat when generating ipv4 pmtu error 2023-08-04 18:24:52 -07:00
ipv6 ip6mr: Fix skb_under_panic in ip6mr_cache_report() 2023-08-02 10:35:21 +01:00
iucv
kcm sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
key sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
l2tp net: annotate data-races around sk->sk_mark 2023-07-29 18:13:41 +01:00
l3mdev
lapb
llc llc: Don't drop packet from non-root netns. 2023-07-20 10:46:28 +02:00
mac80211 - New Drivers 2023-07-03 11:26:05 -07:00
mac802154 Core WPAN changes: 2023-06-24 15:41:46 -07:00
mctp sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
mpls net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
mptcp mptcp: fix disconnect vs accept race 2023-08-04 18:26:27 -07:00
ncsi net/ncsi: change from ndo_set_mac_address to dev_set_mac_address 2023-06-09 10:32:51 +01:00
netfilter net: annotate data-races around sk->sk_mark 2023-07-29 18:13:41 +01:00
netlabel netlabel: Reorder fields in 'struct netlbl_domaddr6_map' 2023-06-20 20:06:56 -07:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-06-27 09:45:22 -07:00
netrom sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-06-27 09:45:22 -07:00
nsh net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
openvswitch net: openvswitch: add support for l4 symmetric hashing 2023-06-12 09:46:30 +01:00
packet net/packet: annotate data-races around tp->status 2023-08-04 18:03:16 -07:00
phonet sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
psample
qrtr Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
rds sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
rfkill net: rfkill-gpio: Add explicit include for of.h 2023-04-06 20:36:27 +02:00
rose sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
rxrpc Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
sched net/sched: cls_route: No longer copy tcf_result on update to avoid use-after-free 2023-07-31 20:10:37 -07:00
sctp sctp: fix potential deadlock on &net->sctp.addr_wq_lock 2023-06-29 11:49:42 +02:00
smc net/smc: Use correct buffer sizes when switching between TCP and SMC 2023-08-09 11:20:29 +01:00
strparser
sunrpc NFS client updates for Linux 6.5 2023-07-01 14:38:25 -07:00
switchdev
tipc tipc: stop tipc crypto on failure in tipc_node_create 2023-07-27 11:45:05 +02:00
tls net: tls: avoid discarding data on record close 2023-08-06 08:32:18 +01:00
unix net: add missing data-race annotations around sk->sk_peek_off 2023-07-29 18:13:41 +01:00
vmw_vsock sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
wireless wifi: cfg80211: Fix return value in scan logic 2023-07-26 10:08:07 +03:00
x25 sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
xdp net: annotate data-races around sk->sk_mark 2023-07-29 18:13:41 +01:00
xfrm net: annotate data-races around sk->sk_mark 2023-07-29 18:13:41 +01:00
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/core: Enable socket busy polling on -RT 2023-05-26 08:51:26 +01:00
Kconfig.debug
Makefile net/handshake: Create a NETLINK service for handling handshake requests 2023-04-19 18:48:48 -07:00
socket.c Networking changes for 6.5. 2023-06-28 16:43:10 -07:00
sysctl_net.c