David Howells 5086d9a9df rxrpc: Move the cwnd degradation after transmitting packets ... When we've gone for >1RTT without transmitting a packet, we should reduce the ssthresh and cut the cwnd by half (as suggested in RFC2861 sec 3.1). However, we may receive ACK packets in a batch and the first of these may cut the cwnd, preventing further transmission, and each subsequent one cuts the cwnd yet further, reducing it to the floor and killing performance. Fix this by moving the cwnd reset to after doing the transmission and resetting the base time such that we don't cut the cwnd by half again for at least another RTT. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org		2022-12-01 13:36:43 +00:00
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af_rxrpc.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
ar-internal.h	rxrpc: Move the cwnd degradation after transmitting packets	2022-12-01 13:36:43 +00:00
call_accept.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
call_event.c	rxrpc: Move the cwnd degradation after transmitting packets	2022-12-01 13:36:43 +00:00
call_object.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
conn_client.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
conn_event.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
conn_object.c	rxrpc: Make the I/O thread take over the call and local processor work	2022-12-01 13:36:42 +00:00
conn_service.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
input.c	rxrpc: Move the cwnd degradation after transmitting packets	2022-12-01 13:36:43 +00:00
insecure.c	rxrpc: Don't use a ring buffer for call Tx queue	2022-11-08 16:42:28 +00:00
io_thread.c	rxrpc: Make the I/O thread take over the call and local processor work	2022-12-01 13:36:42 +00:00
Kconfig	rxrpc: Implement an in-kernel rxperf server for testing purposes	2022-12-01 13:36:37 +00:00
key.c	rxrpc: Drop rxrpc_conn_parameters from rxrpc_connection and rxrpc_bundle	2022-12-01 13:36:38 +00:00
local_event.c	rxrpc: Make the I/O thread take over the call and local processor work	2022-12-01 13:36:42 +00:00
local_object.c	rxrpc: Make the I/O thread take over the call and local processor work	2022-12-01 13:36:42 +00:00
Makefile	rxrpc: Split the receive code	2022-12-01 13:36:40 +00:00
misc.c	rxrpc: Get rid of the Rx ring	2022-11-08 16:42:28 +00:00
net_ns.c	rxrpc: Don't hold a ref for connection workqueue	2022-12-01 13:36:40 +00:00
output.c	rxrpc: Trace/count transmission underflows and cwnd resets	2022-12-01 13:36:42 +00:00
peer_event.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
peer_object.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
proc.c	rxrpc: Move the cwnd degradation after transmitting packets	2022-12-01 13:36:43 +00:00
protocol.h	rxrpc: Clone received jumbo subpackets and queue separately	2022-11-08 16:42:28 +00:00
recvmsg.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
rtt.c	rxrpc: Fix _usecs_to_jiffies() by using usecs_to_jiffies()	2021-09-24 14:18:34 +01:00
rxkad.c	rxrpc: Drop rxrpc_conn_parameters from rxrpc_connection and rxrpc_bundle	2022-12-01 13:36:38 +00:00
rxperf.c	rxrpc: Implement an in-kernel rxperf server for testing purposes	2022-12-01 13:36:37 +00:00
security.c	rxrpc: Copy client call parameters into rxrpc_call earlier	2022-12-01 13:36:41 +00:00
sendmsg.c	rxrpc: Remove the _bh annotation from all the spinlocks	2022-12-01 13:36:42 +00:00
server_key.c	rxrpc: Implement an in-kernel rxperf server for testing purposes	2022-12-01 13:36:37 +00:00
skbuff.c	rxrpc: trace: Don't use __builtin_return_address for sk_buff tracing	2022-12-01 13:36:39 +00:00
sysctl.c	rxrpc: Get rid of the Rx ring	2022-11-08 16:42:28 +00:00
txbuf.c	rxrpc: Move DATA transmission into call processor work item	2022-12-01 13:36:41 +00:00
utils.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00