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linux/net/ipv4
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Eric Dumazet 4057037535 tcp: add accessors to read/set tp->snd_cwnd 
We had various bugs over the years with code
breaking the assumption that tp->snd_cwnd is greater
than zero.

Lately, syzbot reported the WARN_ON_ONCE(!tp->prior_cwnd) added
in commit 8b8a321ff72c ("tcp: fix zero cwnd in tcp_cwnd_reduction")
can trigger, and without a repro we would have to spend
considerable time finding the bug.

Instead of complaining too late, we want to catch where
and when tp->snd_cwnd is set to an illegal value.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Link: https://lore.kernel.org/r/20220405233538.947344-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-04-06 12:05:41 -07:00
..
bpfilter
net: Revert "net: optimize the sockptr_t for unified kernel/user address spaces"
2020-08-10 12:06:44 -07:00
netfilter
netfilter: nf_nat_h323: eliminate anonymous module_init & module_exit
2022-03-20 00:29:47 +01:00
af_inet.c
gso: do not skip outer ip header in case of ipip and net_failover
2022-02-21 11:41:30 +00:00
ah4.c
Networking changes for 5.14.
2021-06-30 15:51:09 -07:00
arp.c
net: neigh: add skb drop reasons to arp_error_report()
2022-02-26 12:53:59 +00:00
bpf_tcp_ca.c
bpf: reject program if a __user tagged memory accessed in kernel way
2022-01-27 12:03:46 -08:00
cipso_ipv4.c
NET: IPV4: fix error "do not initialise globals to 0"
2021-09-19 12:43:56 +01:00
datagram.c
net/ipv4/datagram.c: remove superfluous header files from datagram.c
2021-09-29 11:39:33 +01:00
devinet.c
net: Add new protocol attribute to IP addresses
2022-02-18 21:20:06 -08:00
esp4_offload.c
net: Fix esp GSO on inter address family tunnels.
2022-03-07 13:14:04 +01:00
esp4.c
esp: Fix possible buffer overflow in ESP transformation
2022-03-07 13:14:03 +01:00
fib_frontend.c
net: Add l3mdev index to flow struct and avoid oif reset for port devices
2022-03-15 20:20:02 -07:00
fib_lookup.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-02-17 11:44:20 -08:00
fib_notifier.c
net: ipv4: remove superfluous header files from fib_notifier.c
2021-09-28 17:32:56 -07:00
fib_rules.c
ipv4: Reject again rules with high DSCP values
2022-02-10 15:33:33 +00:00
fib_semantics.c
net: Add l3mdev index to flow struct and avoid oif reset for port devices
2022-03-15 20:20:02 -07:00
fib_trie.c
net: Add l3mdev index to flow struct and avoid oif reset for port devices
2022-03-15 20:20:02 -07:00
fou.c
gro: remove rcu_read_lock/rcu_read_unlock from gro_complete handlers
2021-11-24 17:21:42 -08:00
gre_demux.c
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
gre_offload.c
gro: remove rcu_read_lock/rcu_read_unlock from gro_complete handlers
2021-11-24 17:21:42 -08:00
icmp.c
ipv4: do not use per netns icmp sockets
2022-01-25 11:25:21 +00:00
igmp.c
ipv4: drop unused assignment
2021-11-14 12:20:44 +00:00
inet_connection_sock.c
tcp: Use BPF timeout setting for SYN ACK RTO
2022-02-02 14:45:18 +00:00
inet_diag.c
inet_diag: fix kernel-infoleak for UDP sockets
2021-12-10 21:14:49 -08:00
inet_fragment.c
net: ip: Handle delivery_time in ip defrag
2022-03-03 14:38:48 +00:00
inet_hashtables.c
tcp: Don't acquire inet_listen_hashbucket::lock with disabled BH.
2022-02-09 21:28:36 -08:00
inet_timewait_sock.c
tcp: allocate tcp_death_row outside of struct netns_ipv4
2022-01-26 19:00:31 -08:00
inetpeer.c
inetpeer: use div64_ul() and clamp_val() calculate inet_peer_threshold
2021-03-01 13:32:12 -08:00
ip_forward.c
net: Add skb_clear_tstamp() to keep the mono delivery_time
2022-03-03 14:38:48 +00:00
ip_fragment.c
net: ip: Handle delivery_time in ip defrag
2022-03-03 14:38:48 +00:00
ip_gre.c
gre: Don't accidentally set RTO_ONLINK in gre_fill_metadata_dst()
2022-01-11 20:36:08 -08:00
ip_input.c
net: Postpone skb_clear_delivery_time() until knowing the skb is delivered locally
2022-03-03 14:38:48 +00:00
ip_options.c
ipv4: drop fragmentation code from ip_options_build()
2022-01-29 17:53:07 +00:00
ip_output.c
net: Set skb->mono_delivery_time and clear it after sch_handle_ingress()
2022-03-03 14:38:48 +00:00
ip_sockglue.c
ipv4: Exposing __ip_sock_set_tos() in ip.h
2021-11-20 14:11:00 +00:00
ip_tunnel_core.c
net: ip_tunnel: clean up endianness conversions
2021-01-08 19:25:35 -08:00
ip_tunnel.c
ip: use dev_addr_set() in tunnels
2021-10-13 09:41:37 -07:00
ip_vti.c
ip: use dev_addr_set() in tunnels
2021-10-13 09:41:37 -07:00
ipcomp.c
Networking changes for 5.14.
2021-06-30 15:51:09 -07:00
ipconfig.c
net: ipconfig: Release the rtnl_lock while waiting for carrier
2021-10-28 14:36:41 +01:00
ipip.c
ip: use dev_addr_set() in tunnels
2021-10-13 09:41:37 -07:00
ipmr_base.c
net: fib_notifier: propagate extack down to the notifier block callback
2019-10-04 11:10:56 -07:00
ipmr.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-02-10 17:29:56 -08:00
Kconfig
net: ipv4: remove duplicate "the the" phrase in Kconfig text
2020-08-18 16:02:16 -07:00
Makefile
bpf: Clean up sockmap related Kconfigs
2021-02-26 12:28:03 -08:00
metrics.c
treewide: rename nla_strlcpy to nla_strscpy.
2020-11-16 08:08:54 -08:00
netfilter.c
netfilter: Dissect flow after packet mangling
2021-04-18 22:04:16 +02:00
netlink.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
nexthop.c
nexthop: change nexthop_net_exit() to nexthop_net_exit_batch()
2022-02-08 20:41:33 -08:00
ping.c
net: remove noblock parameter from skb_recv_datagram()
2022-04-06 13:45:26 +01:00
proc.c
tcp: allocate tcp_death_row outside of struct netns_ipv4
2022-01-26 19:00:31 -08:00
protocol.c
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
raw_diag.c
net: Use nlmsg_unicast() instead of netlink_unicast()
2021-07-13 09:28:29 -07:00
raw.c
net: remove noblock parameter from skb_recv_datagram()
2022-04-06 13:45:26 +01:00
route.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2022-03-23 10:53:49 -07:00
syncookies.c
net: align static siphash keys
2021-11-16 19:07:54 -08:00
sysctl_net_ipv4.c
tcp: adjust TSO packet sizes based on min_rtt
2022-03-09 20:05:44 -08:00
tcp_bbr.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_bic.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_bpf.c
bpf, sockmap: Fix double uncharge the mem of sk_msg
2022-03-15 16:43:31 +01:00
tcp_cdg.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_cong.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_cubic.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_dctcp.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_dctcp.h
tcp: refactor DCTCP ECN ACK handling
2018-10-10 22:26:00 -07:00
tcp_diag.c
inet_diag: Move the INET_DIAG_REQ_BYTECODE nlattr to cb->data
2020-02-27 18:50:19 -08:00
tcp_fastopen.c
net/ipv4/tcp_fastopen.c: remove superfluous header files from tcp_fastopen.c
2021-09-20 13:09:06 +01:00
tcp_highspeed.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_htcp.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_hybla.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_illinois.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_input.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_ipv4.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_lp.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_metrics.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_minisocks.c
tcp: Use BPF timeout setting for SYN ACK RTO
2022-02-02 14:45:18 +00:00
tcp_nv.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_offload.c
net: move gro definitions to include/net/gro.h
2021-11-16 13:16:54 +00:00
tcp_output.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_rate.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_recovery.c
tcp: more accurately check DSACKs to grow RACK reordering window
2021-07-27 20:07:21 +01:00
tcp_scalable.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_timer.c
net: sock: introduce sk_error_report
2021-06-29 11:28:21 -07:00
tcp_ulp.c
bpf: sockmap: Only check ULP for TCP sockets
2020-03-09 22:34:58 +01:00
tcp_vegas.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_vegas.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tcp_veno.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_westwood.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp_yeah.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tcp.c
tcp: add accessors to read/set tp->snd_cwnd
2022-04-06 12:05:41 -07:00
tunnel4.c
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
udp_bpf.c
net: Implement ->sock_is_readable() for UDP and AF_UNIX
2021-10-26 12:29:33 -07:00
udp_diag.c
net: Use nlmsg_unicast() instead of netlink_unicast()
2021-07-13 09:28:29 -07:00
udp_impl.h
net: pass a sockptr_t into ->setsockopt
2020-07-24 15:41:54 -07:00
udp_offload.c
gro: remove rcu_read_lock/rcu_read_unlock from gro_complete handlers
2021-11-24 17:21:42 -08:00
udp_tunnel_core.c
net/ipv4/udp_tunnel_core.c: remove superfluous header files from udp_tunnel_core.c
2021-09-21 10:17:20 +01:00
udp_tunnel_nic.c
udp_tunnel: Fix end of loop test in udp_tunnel_nic_unregister()
2022-02-23 12:35:00 +00:00
udp_tunnel_stub.c
udp_tunnel: add central NIC RX port offload infrastructure
2020-07-10 13:54:00 -07:00
udp.c
net: udp: use kfree_skb_reason() in __udp_queue_rcv_skb()
2022-02-07 11:18:49 +00:00
udplite.c
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
xfrm4_input.c
xfrm: state: remove extract_input indirection from xfrm_state_afinfo
2020-05-06 09:40:08 +02:00
xfrm4_output.c
xfrm: fix unused variable warning if CONFIG_NETFILTER=n
2020-05-11 15:12:27 +02:00
xfrm4_policy.c
net: Add l3mdev index to flow struct and avoid oif reset for port devices
2022-03-15 20:20:02 -07:00
xfrm4_protocol.c
net: Remove the member netns_ok
2021-05-17 15:29:35 -07:00
xfrm4_state.c
xfrm: remove output_finish indirection from xfrm_state_afinfo
2020-05-06 09:40:08 +02:00
xfrm4_tunnel.c
net/ipv4/xfrm4_tunnel.c: remove superfluous header files from xfrm4_tunnel.c
2021-09-23 10:10:00 +02:00