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a29cb69146
linux/net
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Yuchung Cheng a29cb69146 net: tcp better handling of reordering then loss cases 
This patch aims to improve the situation when reordering and loss are
ocurring in the same flight of packets.

Previously the reordering would first induce a spurious recovery, then
the subsequent ACK may undo the cwnd (based on the timestamps e.g.).
However the current loss recovery does not proceed to invoke
RACK to install a reordering timer. If some packets are also lost, this
may lead to a long RTO-based recovery. An example is
https://groups.google.com/g/bbr-dev/c/OFHADvJbTEI

The solution is to after reverting the recovery, always invoke RACK
to either mount the RACK timer to fast retransmit after the reordering
window, or restarts the recovery if new loss is identified. Hence
it is possible the sender may go from Recovery to Disorder/Open to
Recovery again in one ACK.

Reported-by: mingkun bian <bianmingkun@gmail.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-03 14:20:44 -07:00
..
6lowpan 6lowpan: Fix some typos in nhc_udp.c 2021-03-24 17:52:11 -07:00
9p 9p/trans_virtio: Fix spelling mistakes 2021-06-02 14:01:55 -07:00
802
8021q net: vlan: Avoid using strncpy() 2021-06-03 14:15:10 -07:00
appletalk appletalk: Fix skb allocation size in loopback case 2021-02-12 16:40:28 -08:00
atm net: atm: use DEVICE_ATTR_RO macro 2021-05-20 15:50:54 -07:00
ax25 net/ax25: Delete obsolete TODO file 2021-03-30 16:54:50 -07:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-04-09 20:48:35 -07:00
bluetooth Bluetooth: Fix spelling mistakes 2021-06-02 14:01:55 -07:00
bpf bpf: Prepare bpf syscall to be used from kernel and user space. 2021-05-19 00:33:40 +02:00
bpfilter net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
bridge net: bridge: remove redundant assignment 2021-05-25 15:20:27 -07:00
caif net: caif: Drop unnecessary NULL check after container_of 2021-05-13 15:55:50 -07:00
can linux-can-next-for-5.14-20210527 2021-05-27 14:39:11 -07:00
ceph libceph: Fix spelling mistakes 2021-06-03 13:24:23 -07:00
core rtnetlink: Fix spelling mistakes 2021-06-03 13:24:23 -07:00
dcb net: dcb: Return the correct errno code 2021-06-01 17:01:33 -07:00
dccp net: Remove the member netns_ok 2021-05-17 15:29:35 -07:00
decnet decnet: Fix spelling mistakes 2021-06-02 14:01:55 -07:00
dns_resolver net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
dsa net: dsa: fix error code getting shifted with 4 in dsa_slave_get_sset_count 2021-05-10 14:36:59 -07:00
ethernet of: net: pass the dst buffer to of_get_mac_address() 2021-04-13 14:35:02 -07:00
ethtool ethtool: Fix a typo 2021-06-02 14:01:55 -07:00
hsr net: hsr: fix mac_len checks 2021-05-24 14:10:28 -07:00
ieee802154 net: remove the new_ifindex argument from dev_change_net_namespace 2021-04-07 14:43:28 -07:00
ife net: remove redundant 'depends on NET' 2021-01-27 17:04:12 -08:00
ipv4 net: tcp better handling of reordering then loss cases 2021-06-03 14:20:44 -07:00
ipv6 sit: replace 68 with micro IPV4_MIN_MTU 2021-06-02 13:28:05 -07:00
iucv iucv: af_iucv.c: Couple of typo fixes 2021-03-28 17:31:13 -07:00
kcm kcm: kcmsock.c: Couple of typo fixes 2021-03-28 17:31:13 -07:00
key af_key: relax availability checks for skb size calculation 2021-01-04 10:05:50 +01:00
l2tp net: Remove the member netns_ok 2021-05-17 15:29:35 -07:00
l3mdev l3mdev: Correct function names in the kerneldoc comments 2021-03-28 17:56:55 -07:00
lapb net: lapb: Make "lapb_t1timer_running" able to detect an already running timer 2021-03-23 14:14:50 -07:00
llc llc2: Remove redundant assignment to rc 2021-04-27 14:16:14 -07:00
mac80211 mac80211: extend protection against mixed key and fragment cache attacks 2021-05-11 20:14:50 +02:00
mac802154 net: mac802154: Fix general protection fault 2021-04-06 22:42:16 +02:00
mpls mpls: Remove redundant assignment to err 2021-04-27 14:17:00 -07:00
mptcp mptcp: restrict values of 'enabled' sysctl 2021-05-28 13:59:16 -07:00
ncsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-04-09 20:48:35 -07:00
netfilter netfilter: fix clang-12 fmt string warnings 2021-06-01 23:53:51 +02:00
netlabel netlabel: remove unused parameter in netlbl_netlink_auditinfo() 2021-05-19 12:27:13 -07:00
netlink netlink: disable IRQs for netlink_lock_table() 2021-05-17 15:31:03 -07:00
netrom net: netrom: nr_in: Remove redundant assignment to ns 2021-04-28 13:59:08 -07:00
nfc NFC: nci: Remove redundant assignment to len 2021-06-01 15:52:24 -07:00
nsh
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-05-27 09:55:10 -07:00
packet Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-05-27 09:55:10 -07:00
phonet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
psample psample: Add additional metadata attributes 2021-03-14 15:00:43 -07:00
qrtr net: qrtr: ns: Fix error return code in qrtr_ns_init() 2021-05-19 13:14:35 -07:00
rds rds: Fix spelling mistakes 2021-05-31 22:45:05 -07:00
rfkill Another set of updates, all over the map: 2021-04-20 16:44:04 -07:00
rose net: rose: Fix fall-through warnings for Clang 2021-03-10 12:45:15 -08:00
rxrpc rxrpc: Fix a typo 2021-06-02 14:01:55 -07:00
sched net/sched: act_vlan: No dump for unset priority 2021-06-01 16:54:42 -07:00
sctp sctp: sm_statefuns: Fix spelling mistakes 2021-05-31 22:45:15 -07:00
smc net/smc: no need to flush smcd_dev's event_wq before destroying it 2021-06-03 13:54:49 -07:00
strparser
sunrpc NFS client updates for Linux 5.13 2021-05-07 11:23:41 -07:00
switchdev net: bridge: propagate extack through switchdev_port_attr_set 2021-02-14 17:38:11 -08:00
tipc tipc: simplify handling of lookup scope during multicast message reception 2021-06-03 14:06:39 -07:00
tls Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-05-27 09:55:10 -07:00
unix af_unix: handle idmapped mounts 2021-01-24 14:27:18 +01:00
vmw_vsock vsock/vmci: Remove redundant assignment to err 2021-04-30 15:00:59 -07:00
wireless cfg80211: mitigate A-MSDU aggregation attacks 2021-05-11 20:13:13 +02:00
x25 af_x25.c: Fix a spello 2021-03-28 17:31:13 -07:00
xdp xsk: Fix for xp_aligned_validate_desc() when len == chunk_size 2021-05-04 00:28:06 +02:00
xfrm xfrm: ipcomp: remove unnecessary get_cpu() 2021-04-19 12:49:29 +02:00
compat.c iov_iter: transparently handle compat iovecs in import_iovec 2020-10-03 00:02:13 -04:00
devres.c
Kconfig bpf, kconfig: Add consolidated menu entry for bpf with core options 2021-05-11 13:56:16 -07:00
Makefile net: l3mdev: use obj-$(CONFIG_NET_L3_MASTER_DEV) form in net/Makefile 2021-01-27 17:03:52 -08:00
socket.c net: Fix a misspell in socket.c 2021-03-25 16:56:27 -07:00
sysctl_net.c net: Ensure net namespace isolation of sysctls 2021-04-12 13:27:11 -07:00