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a91d55d162
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Tuong Lien a91d55d162 tipc: enable broadcast retrans via unicast 
In some environment, broadcast traffic is suppressed at high rate (i.e.
a kind of bandwidth limit setting). When it is applied, TIPC broadcast
can still run successfully. However, when it comes to a high load, some
packets will be dropped first and TIPC tries to retransmit them but the
packet retransmission is intentionally broadcast too, so making things
worse and not helpful at all.

This commit enables the broadcast retransmission via unicast which only
retransmits packets to the specific peer that has really reported a gap
i.e. not broadcasting to all nodes in the cluster, so will prevent from
being suppressed, and also reduce some overheads on the other peers due
to duplicates, finally improve the overall TIPC broadcast performance.

Note: the functionality can be turned on/off via the sysctl file:

echo 1 > /proc/sys/net/tipc/bc_retruni
echo 0 > /proc/sys/net/tipc/bc_retruni

Default is '0', i.e. the broadcast retransmission still works as usual.

Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-26 15:16:52 -07:00
..
6lowpan
9p 9pnet: allow making incomplete read requests 2020-03-27 09:29:56 +00:00
802 net: 802: psnap.c: Use built-in RCU list checking 2020-02-24 13:02:53 -08:00
8021q netpoll: accept NULL np argument in netpoll_send_skb() 2020-05-07 18:11:07 -07:00
appletalk ipv4,appletalk: move SIOCADDRT and SIOCDELRT handling into ->compat_ioctl 2020-05-18 17:35:02 -07:00
atm atm: switch do_atmif_sioc() to direct use of atm_dev_ioctl() 2020-05-20 20:31:36 -04:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
batman-adv batadv_socket_read(): get rid of pointless access_ok() 2020-05-20 20:31:33 -04:00
bluetooth Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2020-05-13 12:20:12 -07:00
bpf bpf: Fix too large copy from user in bpf_test_init 2020-05-19 17:56:34 +02:00
bpfilter SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
bridge bridge: mrp: Fix out-of-bounds read in br_mrp_parse 2020-05-25 18:09:26 -07:00
caif net: caif: Fix use correct return type for ndo_start_xmit() 2020-04-30 12:13:07 -07:00
can
ceph docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
dcb
dccp ipv6: move SIOCADDRT and SIOCDELRT handling into ->compat_ioctl 2020-05-18 17:35:02 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-05-01 17:02:27 -07:00
dns_resolver docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
dsa Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
ethernet net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
ethtool Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
hsr hsr: remove WARN_ONCE() in hsr_fill_frame_info() 2020-05-07 17:40:02 -07:00
ieee802154 ieee802154: 6lowpan: remove unnecessary comparison 2020-05-08 22:25:10 -07:00
ife
ipv4 tcp: tcp_v4_err() icmp skb is named icmp_skb 2020-05-26 15:12:45 -07:00
ipv6 tcp: allow traceroute -Mtcp for unpriv users 2020-05-25 17:54:06 -07:00
iucv net/af_iucv: clean up function prototypes 2020-05-19 12:50:14 -07:00
kcm net: kcm: kcmproc.c: Fix RCU list suspicious usage warning 2020-03-16 17:14:02 -07:00
key
l2tp ipv6: move SIOCADDRT and SIOCDELRT handling into ->compat_ioctl 2020-05-18 17:35:02 -07:00
l3mdev
lapb docs: networking: convert lapb-module.txt to ReST 2020-04-30 12:56:35 -07:00
llc af_llc: fix if-statement empty body warning 2020-02-26 20:38:13 -08:00
mac80211 docs: networking: convert mac80211-injection.txt to ReST 2020-04-30 12:56:36 -07:00
mac802154
mpls mpls: Add support for IPv6 tunnels 2020-05-22 15:49:31 -07:00
mptcp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
ncsi
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-15 13:48:59 -07:00
netlabel netlabel: cope with NULL catmap 2020-05-12 18:12:40 -07:00
netlink bpf: Enable bpf_iter targets registering ctx argument types 2020-05-13 12:30:50 -07:00
netrom net: partially revert dynamic lockdep key changes 2020-05-04 12:05:56 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-12 22:34:48 -07:00
nsh
openvswitch net: openvswitch: use div_u64() for 64-by-32 divisions 2020-04-25 20:48:21 -07:00
packet net/packet: tpacket_rcv: avoid a producer race condition 2020-03-15 00:25:25 -07:00
phonet sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
psample net: psample: fix build error when CONFIG_INET is not enabled 2020-05-23 16:36:05 -07:00
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
rds rds: fix crash in rds_info_getsockopt() 2020-05-20 14:08:06 -07:00
rfkill
rose net: partially revert dynamic lockdep key changes 2020-05-04 12:05:56 -07:00
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
sched net: sched: cls_flower: implement terse dump support 2020-05-15 10:23:11 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
smc net/smc: remove set but not used variables 'del_llc, del_llc_resp' 2020-05-07 18:05:07 -07:00
strparser
sunrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
switchdev net: switchdev: do not propagate bridge updates across bridges 2020-02-26 20:58:33 -08:00
tipc tipc: enable broadcast retrans via unicast 2020-05-26 15:16:52 -07:00
tls net/tls: free record only on encryption error 2020-05-21 17:20:06 -07:00
unix net: datagram: drop 'destructor' argument from several helpers 2020-02-28 12:12:53 -08:00
vmw_vsock vsock/virtio: fix multiple packet delivery to monitoring devices 2020-04-27 10:18:01 -07:00
wimax
wireless netlink: remove NLA_EXACT_LEN_WARN 2020-04-30 17:51:42 -07:00
x25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-06 22:10:13 -07:00
xdp xsk: Explicitly inline functions and move definitions 2020-05-21 17:31:27 -07:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2020-03-30 10:59:20 -07:00
compat.c get rid of compat_mc_setsockopt() 2020-05-20 20:31:32 -04:00
devres.c net: devres: provide devm_register_netdev() 2020-05-23 16:56:17 -07:00
Kconfig net: ethtool: netlink: Add support for triggering a cable test 2020-05-10 12:28:41 -07:00
Makefile net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
socket.c ipv4,appletalk: move SIOCADDRT and SIOCDELRT handling into ->compat_ioctl 2020-05-18 17:35:02 -07:00
sysctl_net.c