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linux/net
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David Howells 42ff00c23b rxrpc: Adjust retransmission backoff 
[ Upstream commit 2c13c05c5f ]

Improve retransmission backoff by only backing off when we retransmit data
packets rather than when we set the lost ack timer.

To this end:

 (1) In rxrpc_resend(), use rxrpc_get_rto_backoff() when setting the
     retransmission timer and only tell it that we are retransmitting if we
     actually have things to retransmit.

     Note that it's possible for the retransmission algorithm to race with
     the processing of a received ACK, so we may see no packets needing
     retransmission.

 (2) In rxrpc_send_data_packet(), don't bump the backoff when setting the
     ack_lost_at timer, as it may then get bumped twice.

With this, when looking at one particular packet, the retransmission
intervals were seen to be 1.5ms, 2ms, 3ms, 5ms, 9ms, 17ms, 33ms, 71ms,
136ms, 264ms, 544ms, 1.088s, 2.1s, 4.2s and 8.3s.

Fixes: c410bf0193 ("rxrpc: Fix the excessive initial retransmission timeout")
Suggested-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/164138117069.2023386.17446904856843997127.stgit@warthog.procyon.org.uk/
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-02-01 17:27:11 +01:00
..
6lowpan 6lowpan: iphc: Fix an off-by-one check of array index 2021-07-22 16:19:03 +02:00
9p 9p/net: fix missing error check in p9_check_errors 2021-11-18 19:17:16 +01:00
802 net: 802: remove dead leftover after ipx driver removal 2021-08-13 16:30:35 -07:00
8021q net: vlan: fix underflow for the real_dev refcnt 2021-12-01 09:04:53 +01:00
appletalk net: socket: rework compat_ifreq_ioctl() 2021-07-23 14:20:25 +01:00
atm atm: Use list_for_each_entry() to simplify code in resources.c 2021-06-10 14:08:09 -07:00
ax25 ax25: uninitialized variable in ax25_setsockopt() 2022-01-27 11:03:59 +01:00
batman-adv batman-adv: allow netlink usage in unprivileged containers 2022-01-27 11:04:25 +01:00
bluetooth Bluetooth: hci_sync: Fix not setting adv set duration 2022-01-27 11:05:22 +01:00
bpf bpf, test, cgroup: Use sk_{alloc,free} for test cases 2021-09-28 09:29:28 +02:00
bpfilter bpfilter: Specify the log level for the kmsg message 2021-06-25 13:13:50 +02:00
bridge netfilter: bridge: add support for pppoe filtering 2022-01-27 11:03:22 +01:00
caif net-caif: avoid user-triggerable WARN_ON(1) 2021-09-14 12:51:15 +01:00
can can: isotp: convert struct tpcon::{idx,len} to unsigned int 2022-01-16 09:12:44 +01:00
ceph Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
core net-procfs: show net devices bound packet types 2022-02-01 17:27:08 +01:00
dcb net: dcb: Return the correct errno code 2021-06-01 17:01:33 -07:00
dccp tcp: switch orphan_count to bare per-cpu counters 2021-11-18 19:16:33 +01:00
decnet net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
dns_resolver
dsa net: dsa: fix incorrect function pointer check for MRP ring roles 2022-01-27 11:03:50 +01:00
ethernet move netdev_boot_setup into Space.c 2021-08-03 13:05:26 +01:00
ethtool ethtool: do not perform operations on net devices being unregistered 2021-12-14 10:57:09 +01:00
hsr net: hsr: don't check sequence number if tag removal is offloaded 2021-06-16 12:13:01 -07:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-13 06:41:22 -07:00
ife
ipv4 ping: fix the sk_bound_dev_if match in ping_lookup 2022-02-01 17:27:08 +01:00
ipv6 ipv6: annotate accesses to fn->fn_sernum 2022-02-01 17:27:09 +01:00
iucv net/iucv: Replace deprecated CPU-hotplug functions. 2021-08-09 10:13:32 +01:00
kcm net: sock: introduce sk_error_report 2021-06-29 11:28:21 -07:00
key net: Remove unnecessary variables 2021-05-26 07:03:39 +02:00
l2tp net/l2tp: Fix reference count leak in l2tp_udp_recv_core 2021-09-09 11:00:20 +01:00
l3mdev
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
llc net: Remove redundant if statements 2021-08-05 13:27:50 +01:00
mac80211 mac80211: allow non-standard VHT MCS-10/11 2022-01-27 11:04:52 +01:00
mac802154 ieee802154: Remove redundant initialization of variable ret 2021-09-07 14:06:08 +01:00
mctp mctp: Don't let RTM_DELROUTE delete local routes 2021-12-08 09:04:53 +01:00
mpls net: mpls: Fix notifications when deleting a device 2021-12-08 09:04:47 +01:00
mptcp mptcp: fix a DSS option writing error 2022-01-27 11:03:59 +01:00
ncsi net/ncsi: check for error return from call to nla_put_u32 2022-01-05 12:42:37 +01:00
netfilter netfilter: conntrack: don't increment invalid counter on NF_REPEAT 2022-02-01 17:27:09 +01:00
netlabel net: fix NULL pointer reference in cipso_v4_doi_free 2021-08-30 12:23:18 +01:00
netlink net: netlink: af_netlink: Prevent empty skb by adding a check on len. 2021-12-17 10:30:15 +01:00
netrom netrom: fix api breakage in nr_setsockopt() 2022-01-27 11:04:00 +01:00
nfc nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind() 2022-01-27 11:02:48 +01:00
nsh
openvswitch net: openvswitch: Fix ct_state nat flags for conns arriving from tc 2022-01-27 11:04:02 +01:00
packet net: fix information leakage in /proc/net/ptype 2022-02-01 17:27:07 +01:00
phonet phonet: refcount leak in pep_sock_accep 2022-01-11 15:35:16 +01:00
psample
qrtr net: qrtr: revert check in qrtr_endpoint_post() 2021-09-02 11:37:02 +01:00
rds rds: memory leak in __rds_conn_create() 2021-12-22 09:32:42 +01:00
rfkill Another set of updates, all over the map: 2021-04-20 16:44:04 -07:00
rose
rxrpc rxrpc: Adjust retransmission backoff 2022-02-01 17:27:11 +01:00
sched sch_api: Don't skip qdisc attach on ingress 2022-01-27 11:05:42 +01:00
sctp sctp: hold endpoint before calling cb in sctp_transport_lookup_process 2022-01-11 15:35:14 +01:00
smc net/smc: Fix hung_task when removing SMC-R devices 2022-01-27 11:05:31 +01:00
strparser bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding 2021-11-18 19:17:11 +01:00
sunrpc fsnotify: fix fsnotify hooks in pseudo filesystems 2022-02-01 17:27:01 +01:00
switchdev net: make switchdev_bridge_port_{,unoffload} loosely coupled with the bridge 2021-08-04 12:35:07 +01:00
tipc net ticp:fix a kernel-infoleak in __tipc_sendmsg() 2022-01-11 15:35:16 +01:00
tls net/tls: Fix authentication failure in CCM mode 2021-12-08 09:04:41 +01:00
unix af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress 2022-01-27 11:05:30 +01:00
vmw_vsock virtio/vsock: fix the transport to work with VMADDR_CID_ANY 2021-12-22 09:32:39 +01:00
wireless cfg80211: Acquire wiphy mutex on regulatory work 2021-12-22 09:32:42 +01:00
x25 net: x25: Use list_for_each_entry() to simplify code in x25_route.c 2021-06-10 14:08:09 -07:00
xdp Revert "xsk: Do not sleep in poll() when need_wakeup set" 2021-12-22 09:32:51 +01:00
xfrm xfrm: Don't accidentally set RTO_ONLINK in decode_session4() 2022-01-27 11:05:36 +01:00
compat.c net: Return the correct errno code 2021-06-03 15:13:56 -07:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig mctp: Add MCTP base 2021-07-29 15:06:49 +01:00
Makefile mctp: Add MCTP base 2021-07-29 15:06:49 +01:00
socket.c net: fix SOF_TIMESTAMPING_BIND_PHC to work with multiple sockets 2022-01-27 11:03:52 +01:00
sysctl_net.c net: Ensure net namespace isolation of sysctls 2021-04-12 13:27:11 -07:00