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opnsense-src/sys/netinet
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Richard Scheffenegger 440f4ba18e tcp: fix duplicate retransmissions when RTO happens during SACK loss recovery 
When snd_nxt doesn't track snd_max, partial SACK ACKs may elicit
unexpected duplicate retransmissions. This is usually masked by
LRO not necessarily ACKing every individual segment, and prior
to RFC6675 SACK loss recovery, harder to trigger even when an
RTO happens while SACK loss recovery is ongoing.

Address this by improving the logic when to start a SACK loss recovery
and how to deal with a RTO, as well as improvements to the adjusted
congestion window during transmission selection.

Reviewed By:	tuexen, cc, #transport
Sponsored by:	NetApp, Inc.
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D43355
2024-10-10 13:02:47 +02:00
..
cc cc_cubic: use newreno to emulate AIMD in TCP-friendly region 2024-09-17 10:37:00 -04:00
khelp sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
libalias libalias: add another check to previous change 2024-08-20 21:04:13 +07:00
netdump netdump: Check the return value of ifunit_ref() 2023-10-02 08:09:26 -04:00
tcp_stacks tcp: remove unused socket option names 2024-09-20 13:03:53 +02:00
accf_data.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
accf_dns.c sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
accf_http.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
accf_tls.c accf_tls: accept filter that waits for TLS handshake header 2024-04-24 17:53:10 -07:00
dccp.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
icmp6.h sys/netinet/icmp6.h: Fix build 2024-05-23 14:03:55 -07:00
icmp_var.h netinet: add a probe point for IP, IP6, ICMP, ICMP6, UDP and TCP stats counters 2024-04-08 17:29:59 +02:00
if_ether.c Support ARP for 802 networks 2024-04-23 12:30:53 -04:00
if_ether.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
igmp.c netinet: Remove stale references to Giant from comments 2024-01-27 13:51:13 -05:00
igmp.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
igmp_var.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
in.c netinet: correct SIOCDIFADDR{,_IN6} calls to use {,in6_}ifreq 2024-07-22 14:17:21 +00:00
in.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
in_cksum.c sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
in_debug.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
in_fib.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
in_fib.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
in_fib_algo.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
in_fib_dxr.c fib_dxr: code hygiene, prune old code, no functional changes 2024-05-17 18:57:25 +02:00
in_gif.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
in_jail.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
in_kdtrace.c netipsec: add probe points for the ipsec/esp/ah/ipcomp counters 2024-08-28 12:02:45 +02:00
in_kdtrace.h netipsec: add probe points for the ipsec/esp/ah/ipcomp counters 2024-08-28 12:02:45 +02:00
in_mcast.c netinet: Remove stale references to Giant from comments 2024-01-27 13:51:13 -05:00
in_pcb.c netinet: Explicitly disallow connections to the unspecified address 2024-08-29 13:11:15 +00:00
in_pcb.h inpcb: fully retire inp_ppcb pointer 2024-03-29 12:18:32 -07:00
in_pcb_var.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
in_prot.c Fix 'security.bsd.see_jail_proc' by using cr_bsd_visible() 2023-09-28 11:59:08 -03:00
in_proto.c sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
in_rmx.c sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
in_rss.c sys: Remove $FreeBSD$: two-line .c pattern 2023-08-16 11:54:30 -06:00
in_rss.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
in_systm.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
in_var.h pf: simplify pf_addrcpy() and pf_match_addr() 2024-06-06 15:45:31 +02:00
ip.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
ip6.h netinet: Define IPv6 ECN mask 2024-01-03 12:56:28 -05:00
ip_carp.c carp: Fix pullup checks 2024-09-01 14:09:53 +00:00
ip_carp.h carp: support VRRPv3 2024-05-08 13:19:03 +02:00
ip_carp_nl.h carp: support VRRPv3 2024-05-08 13:19:03 +02:00
ip_divert.c divert: just return EOPNOTSUPP on shutdown(2) 2024-01-12 02:04:04 -08:00
ip_divert.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ip_dummynet.h dummynet: add simple gilbert-elliott channel model 2023-12-17 13:20:45 +01:00
ip_ecn.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
ip_ecn.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
ip_encap.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
ip_encap.h sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
ip_fastfwd.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
ip_fw.h ipfw: Fix a typo in a source code comment 2024-05-12 10:53:40 +02:00
ip_gre.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
ip_icmp.c icmp: correct the assertion that checks limit + jitter 2024-04-08 16:54:19 -07:00
ip_icmp.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
ip_id.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
ip_input.c pfil: PFIL_PASS never frees the mbuf 2024-01-29 14:10:19 +01:00
ip_mroute.c ip_mroute: Use NET_EPOCH_WAIT() macro 2024-06-24 17:57:14 +08:00
ip_mroute.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
ip_options.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
ip_options.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
ip_output.c ipsec_output(): add mtu argument 2024-07-12 06:29:31 +03:00
ip_reass.c vnet: (read) lock the vnet list while iterating it 2023-12-07 13:34:47 +01:00
ip_var.h netinet: add a probe point for IP, IP6, ICMP, ICMP6, UDP and TCP stats counters 2024-04-08 17:29:59 +02:00
pim.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
pim_var.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
raw_ip.c Revert "sockets: retire sorflush()" 2024-02-03 13:08:41 -08:00
sctp.h sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
sctp_asconf.c sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_asconf.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_auth.c sctp: cleanup locking for notifications 2023-09-08 16:20:51 +02:00
sctp_auth.h sctp: cleanup SCTP AUTH related notification 2023-09-08 13:13:43 +02:00
sctp_bsd_addr.c sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_bsd_addr.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_cc_functions.c sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_constants.h sctp: make sure all SCTP RESET notifications use sctp_ulp_notify() 2023-09-08 14:19:56 +02:00
sctp_crc32.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
sctp_crc32.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_header.h sctp: store heartbeat creation time as time_t 2024-05-10 20:40:15 +02:00
sctp_indata.c sctp: improve input validation for data chunks 2024-08-03 13:27:18 +02:00
sctp_indata.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_input.c sctp: store cookie secret change time as time_t 2024-05-10 20:14:16 +02:00
sctp_input.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_kdtrace.c sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
sctp_kdtrace.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_lock_bsd.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_module.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
sctp_os.h sockets: don't malloc/free sockaddr memory on getpeername/getsockname 2023-11-30 08:31:10 -08:00
sctp_os_bsd.h sockets: don't malloc/free sockaddr memory on getpeername/getsockname 2023-11-30 08:31:10 -08:00
sctp_output.c sctp: store heartbeat creation time as time_t 2024-05-10 20:40:15 +02:00
sctp_output.h sctp: improve sending of packets containing an INIT ACK chunk 2024-02-24 19:16:36 +01:00
sctp_pcb.c sctp: check locking requirements 2024-10-10 15:50:41 +02:00
sctp_pcb.h sctp: make sctp_free_ifn() static 2024-10-10 10:43:32 +02:00
sctp_peeloff.c sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_peeloff.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_ss_functions.c sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_structs.h sctp: cleanup handling of graceful shutdown of the peer 2023-08-19 12:35:49 +02:00
sctp_syscalls.c sctp: propagate cap rights on sctp_peeloff 2024-10-08 20:36:50 -04:00
sctp_sysctl.c sctp: fix format of sysctl variables 2024-08-22 09:07:27 +02:00
sctp_sysctl.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_timer.c sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
sctp_timer.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_uio.h sctp: cleanup cdefs.h include 2023-08-18 15:25:34 +02:00
sctp_usrreq.c sctp: allow stcb == NULL in sctp_shutdown() 2024-05-09 00:43:28 +02:00
sctp_var.h sockets: make pr_shutdown fully protocol specific method 2024-01-16 10:30:37 -08:00
sctputil.c sctp: improve heartbeat timer computation 2024-05-10 21:02:56 +02:00
sctputil.h sctp: make sure all SCTP RESET notifications use sctp_ulp_notify() 2023-09-08 14:19:56 +02:00
siftr.c siftr: remove the shutdown_pre_sync event handler on unload 2024-07-19 08:09:58 +02:00
tcp.h tcp: further cleanup old options 2024-09-30 12:11:37 -07:00
tcp_accounting.h Move access to tcp's t_logstate into inline functions and provide new tracepoint and bbpoint capabilities. 2023-03-16 11:43:16 -04:00
tcp_ecn.c tcp: commonize check for more data to send, style changes 2024-01-26 01:20:35 +01:00
tcp_ecn.h tcp: AccECN access ACE field by shifting bits 2024-01-26 00:16:22 +01:00
tcp_fastopen.c tcp_fastopen: Fix a typo in a source code comment 2024-01-22 21:49:47 +01:00
tcp_fastopen.h sockets: remove unused KPIs to manipulate sockets 2024-03-18 08:50:30 -07:00
tcp_fsm.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
tcp_hostcache.c tcp_hostcache: remove unnecessary socketvar.h 2024-05-07 14:15:49 -07:00
tcp_hpts.c tcp hpts: initialize variable 2024-04-05 17:30:31 +02:00
tcp_hpts.h HTPS has actually three states not two so the macro needs to account for that. 2024-03-01 15:21:15 -05:00
tcp_input.c tcp: fix duplicate retransmissions when RTO happens during SACK loss recovery 2024-10-10 13:02:47 +02:00
tcp_log_buf.c tcp bblog: use correct length 2024-03-27 14:31:48 +01:00
tcp_log_buf.h tcp: whitespace cleanup in enum tcp_log_events 2024-08-25 22:05:41 +02:00
tcp_lro.c tcp: make tcp_lro_flush() static 2024-09-05 17:44:33 +02:00
tcp_lro.h tcp: make tcp_lro_flush() static 2024-09-05 17:44:33 +02:00
tcp_lro_hpts.c TCP LRO: add dtrace probe points 2024-03-08 10:21:09 +01:00
tcp_offload.c tcp_fill_info(): Change lock assertion on INPCB to locked only 2023-08-22 20:33:49 +02:00
tcp_offload.h sockets: remove unused KPIs to manipulate sockets 2024-03-18 08:50:30 -07:00
tcp_output.c tcp: fix duplicate retransmissions when RTO happens during SACK loss recovery 2024-10-10 13:02:47 +02:00
tcp_pcap.c sys: Style fix for M_EXT | M_EXTPG 2023-12-28 11:17:59 -08:00
tcp_pcap.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
tcp_ratelimit.c tcp_ratelimit: provide an api for drivers to release ratesets at detach 2024-08-05 12:51:35 -04:00
tcp_ratelimit.h tcp_ratelimit: provide an api for drivers to release ratesets at detach 2024-08-05 12:51:35 -04:00
tcp_reass.c sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
tcp_sack.c tcp: fix duplicate retransmissions when RTO happens during SACK loss recovery 2024-10-10 13:02:47 +02:00
tcp_seq.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
tcp_stats.c sys: Automated cleanup of cdefs and other formatting 2023-11-26 22:24:00 -07:00
tcp_subr.c tcp: initialize V_ts_offset_secret for all vnets 2024-08-09 16:12:22 +02:00
tcp_syncache.c tcp: small cleanup 2024-10-01 17:34:35 +02:00
tcp_syncache.h tcp: remove TCP_OFFLOAD_DISABLE 2024-09-15 11:44:49 +02:00
tcp_timer.c TCP can be subject to Sack Attacks lets fix this issue. 2024-05-05 09:08:47 -04:00
tcp_timer.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
tcp_timewait.c tcp: improve consistency 2024-04-06 10:02:06 +02:00
tcp_usrreq.c ddb: update printing of t_flags and tflags2 2024-08-05 11:17:30 +02:00
tcp_var.h tcp: fix duplicate retransmissions when RTO happens during SACK loss recovery 2024-10-10 13:02:47 +02:00
tcpip.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
toecore.c tcp_fill_info(): Change lock assertion on INPCB to locked only 2023-08-22 20:33:49 +02:00
toecore.h inpcb: remove unused KPIs to manipulate inpcbs 2024-03-18 08:49:39 -07:00
udp.h sys: Remove ancient SCCS tags. 2023-11-26 22:23:30 -07:00
udp_usrreq.c Revert "udp: improve handling of cached route" 2024-07-30 11:46:27 +02:00
udp_var.h udp_var: correct intoudpcb macro unintended identifier dependency 2024-06-14 17:28:28 +02:00
udplite.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00