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Dust Li b77104a64c net/smc: correct settings of RMB window update limit 
[ Upstream commit 6bf536eb5c8ca011d1ff57b5c5f7c57ceac06a37 ]

rmbe_update_limit is used to limit announcing receive
window updating too frequently. RFC7609 request a minimal
increase in the window size of 10% of the receive buffer
space. But current implementation used:

  min_t(int, rmbe_size / 10, SOCK_MIN_SNDBUF / 2)

and SOCK_MIN_SNDBUF / 2 == 2304 Bytes, which is almost
always less then 10% of the receive buffer space.

This causes the receiver always sending CDC message to
update its consumer cursor when it consumes more then 2K
of data. And as a result, we may encounter something like
"TCP silly window syndrome" when sending 2.5~8K message.

This patch fixes this using max(rmbe_size / 10, SOCK_MIN_SNDBUF / 2).

With this patch and SMC autocorking enabled, qperf 2K/4K/8K
tcp_bw test shows 45%/75%/40% increase in throughput respectively.

Signed-off-by: Dust Li <dust.li@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-15 14:15:02 +02:00
..
6lowpan 6lowpan: Off by one handling ->nexthdr 2020-01-27 14:50:41 +01:00
9p xen/9p: use alloc/free_pages_exact() 2022-03-11 10:15:13 +01:00
802 net/802/garp: fix memleak in garp_request_join() 2021-07-31 08:22:37 +02:00
8021q net: vlan: avoid leaks on register_vlan_dev() failures 2021-01-17 14:04:19 +01:00
appletalk appletalk: Fix skb allocation size in loopback case 2021-04-07 12:48:49 +02:00
atm atm: fix a memory leak of vcc->user_back 2020-10-01 13:14:43 +02:00
ax25 ax25: Fix NULL pointer dereference in ax25_kill_by_device 2022-03-16 13:20:26 +01:00
batman-adv batman-adv: Don't expect inter-netns unique iflink indices 2022-03-08 19:04:08 +01:00
bluetooth Bluetooth: refactor malicious adv data check 2022-02-08 18:23:02 +01:00
bpf bpf/test_run: support cgroup local storage 2018-08-03 00:47:32 +02:00
bpfilter signal/bpfilter: Fix bpfilter_kernl to use send_sig not force_sig 2020-01-27 14:50:51 +01:00
bridge net: bridge: fix stale eth hdr pointer in br_dev_xmit 2022-02-16 12:51:45 +01:00
caif net-caif: avoid user-triggerable WARN_ON(1) 2021-09-22 11:48:11 +02:00
can can: bcm: switch timer to HRTIMER_MODE_SOFT and remove hrtimer_tasklet 2022-01-27 09:04:12 +01:00
ceph libceph: clear con->out_msg on Policy::stateful_server faults 2020-11-05 11:08:53 +01:00
core esp: Fix possible buffer overflow in ESP transformation 2022-03-28 08:41:42 +02:00
dcb net: dcb: disable softirqs in dcbnl_flush_dev() 2022-03-08 19:04:10 +01:00
dccp dccp: don't duplicate ccid when cloning dccp sock 2021-09-22 11:48:11 +02:00
decnet net: decnet: Fix sleeping inside in af_decnet 2021-07-28 11:13:48 +02:00
dns_resolver KEYS: Don't write out to userspace while holding key semaphore 2020-04-23 10:30:24 +02:00
dsa net: dsa: Add missing of_node_put() in dsa_port_parse_of 2022-03-23 09:10:44 +01:00
ethernet net: add annotations on hh->hh_len lockless accesses 2020-01-09 10:19:09 +01:00
hsr hsr: use netdev_err() instead of WARN_ONCE() 2021-05-22 10:59:24 +02:00
ieee802154 net: ieee802154: Return meaningful error codes from the netlink helpers 2022-02-08 18:23:16 +01:00
ife
ipv4 ipv4: Invalidate neighbour for broadcast address upon address addition 2022-04-15 14:15:01 +02:00
ipv6 xfrm: fix tunnel model fragmentation behavior 2022-04-15 14:14:36 +02:00
iucv net/af_iucv: set correct sk_protocol for child sockets 2020-12-08 10:18:52 +01:00
kcm kcm: switch order of device registration to fix a crash 2019-04-17 08:38:40 +02:00
key af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register 2022-04-15 14:14:37 +02:00
l2tp net/l2tp: Fix reference count leak in l2tp_udp_recv_core 2021-09-22 11:48:11 +02:00
l3mdev
lapb net: lapb: Copy the skb before sending a packet 2021-02-10 09:21:06 +01:00
llc llc: only change llc->dev when bind() succeeds 2022-03-28 08:41:44 +02:00
mac80211 mac80211: fix potential double free on mesh join 2022-03-28 08:41:44 +02:00
mac802154 net: mac802154: Fix general protection fault 2021-04-14 08:22:36 +02:00
mpls net: mpls: Fix notifications when deleting a device 2021-12-08 08:50:13 +01:00
ncsi net/ncsi: Avoid channel_monitor hrtimer deadlock 2021-04-14 08:22:35 +02:00
netfilter netfilter: nf_conntrack_tcp: preserve liberal flag in tcp options 2022-04-15 14:14:53 +02:00
netlabel net: fix NULL pointer reference in cipso_v4_doi_free 2021-09-22 11:48:09 +02:00
netlink af_netlink: Fix shift out of bounds in group mask calculation 2022-04-15 14:14:50 +02:00
netrom netrom: Decrease sock refcount when sock timers expire 2021-07-28 11:13:48 +02:00
nfc nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind() 2022-01-27 09:04:15 +01:00
nsh
openvswitch openvswitch: Fixed nd target mask field in the flow dump. 2022-04-15 14:15:00 +02:00
packet net/packet: fix slab-out-of-bounds access in packet_recvmsg() 2022-03-23 09:10:44 +01:00
phonet phonet: refcount leak in pep_sock_accep 2022-01-11 13:58:50 +01:00
psample net: psample: fix skb_over_panic 2019-12-05 09:21:30 +01:00
qrtr net: qrtr: fix another OOB Read in qrtr_endpoint_post 2021-09-03 09:58:00 +02:00
rds rds: memory leak in __rds_conn_create() 2021-12-22 09:19:01 +01:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2020-01-12 12:17:17 +01:00
rose rose: Fix Null pointer dereference in rose_send_frame() 2020-12-08 10:18:52 +01:00
rxrpc rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer() 2021-12-08 08:50:13 +01:00
sched net: sched: limit TC_ACT_REPEAT loops 2022-02-23 11:58:41 +01:00
sctp sctp: fix the processing for INIT_ACK chunk 2022-03-23 09:10:40 +01:00
smc net/smc: correct settings of RMB window update limit 2022-04-15 14:15:02 +02:00
strparser net: strparser: partially revert "strparser: Call skb_unclone conditionally" 2019-05-16 19:41:27 +02:00
sunrpc SUNRPC: avoid race between mod_timer() and del_timer_sync() 2022-04-15 14:14:38 +02:00
switchdev
tipc tipc: Fix end of loop tests for list_for_each_entry() 2022-03-02 11:38:11 +01:00
tls net/tls: Protect from calling tls_dev_del for TLS RX twice 2020-12-08 10:18:52 +01:00
unix af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress 2022-01-27 09:04:32 +01:00
vmw_vsock vsock: remove vsock from connected table when connect is interrupted by a signal 2022-02-23 11:58:39 +01:00
wimax
wireless nl80211: Update bss channel on channel switch for P2P_CLIENT 2022-03-23 09:10:41 +01:00
x25 net/x25: Fix null-ptr-deref caused by x25_disconnect 2022-04-15 14:14:53 +02:00
xdp xsk: Simplify detection of empty and full rings 2021-05-22 10:59:48 +02:00
xfrm xfrm: fix tunnel model fragmentation behavior 2022-04-15 14:14:36 +02:00
compat.c net: Return the correct errno code 2021-06-30 08:48:13 -04:00
Kconfig
Makefile net: split out functions related to registering inflight socket files 2021-07-31 08:22:37 +02:00
socket.c net: don't unconditionally copy_from_user a struct ifreq for socket ioctls 2021-09-03 09:58:03 +02:00
sysctl_net.c