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freebsd-dev/sys/netinet
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Edward Tomasz Napierala adc56f5a38 Make use of the stats(3) framework in the TCP stack. 
This makes it possible to retrieve per-connection statistical
information such as the receive window size, RTT, or goodput,
using a newly added TCP_STATS getsockopt(3) option, and extract
them using the stats_voistat_fetch(3) API.

See the net/tcprtt port for an example consumer of this API.

Compared to the existing TCP_INFO system, the main differences
are that this mechanism is easy to extend without breaking ABI,
and provides statistical information instead of raw "snapshots"
of values at a given point in time.  stats(3) is more generic
and can be used in both userland and the kernel.

Reviewed by:	thj
Tested by:	thj
Obtained from:	Netflix
Relnotes:	yes
Sponsored by:	Klara Inc, Netflix
Differential Revision:	https://reviews.freebsd.org/D20655
2019-12-02 20:58:04 +00:00
..
cc Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
khelp
libalias Separate kernel crc32() implementation to its own header (gsb_crc32.h) and 2019-06-17 19:49:08 +00:00
netdump Fix compile issues when building a kernel without the VIMAGE option. 2019-10-19 20:48:53 +00:00
tcp_stacks Move all ECN related flags from the flags to the flags2 field. 2019-12-01 21:01:33 +00:00
accf_data.c
accf_dns.c
accf_http.c
icmp6.h Initial implementation of draft-ietf-6man-ipv6only-flag. 2018-10-30 20:08:48 +00:00
icmp_var.h
if_ether.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
if_ether.h Retire arpresolve_addr(), which is not used anywhere, from if_ether.c. 2018-11-17 16:08:36 +00:00
igmp_var.h
igmp.c Quickly fix up r353683: enter the epoch before calling into netisr_dispatch(). 2019-10-17 17:02:50 +00:00
igmp.h
in_cksum.c
in_debug.c
in_fib.c Existense of PCB route caching doesn't allow us to use new fast route 2019-05-08 23:39:24 +00:00
in_fib.h Existense of PCB route caching doesn't allow us to use new fast route 2019-05-08 23:39:24 +00:00
in_gif.c Add the check that current VNET is ready and access to srchash is allowed. 2018-10-23 13:11:45 +00:00
in_jail.c
in_kdtrace.c Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
in_kdtrace.h Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
in_mcast.c in_mcast.c: need if_addr_lock around inm_release_deferred 2019-11-25 22:25:34 +00:00
in_pcb.c Since r353292 on input path we are always in network epoch, when 2019-11-07 20:49:56 +00:00
in_pcb.h Remove now unused INP_INFO_RLOCK macros. 2019-11-07 22:26:54 +00:00
in_pcbgroup.c
in_prot.c
in_proto.c
in_rmx.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
in_rss.c
in_rss.h
in_systm.h
in_var.h Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
in.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
in.h Rename IPPROTO 33 from SEP to DCCP 2019-08-08 11:43:09 +00:00
ip6.h Remove now unused IPv6 macros and update docs. 2019-11-15 21:55:41 +00:00
ip_carp.c Fix m_pullup() problem after removing PULLDOWN_TESTs and KAME EXT_*macros. 2019-12-01 00:22:04 +00:00
ip_carp.h
ip_divert.c Now that there is no R/W lock on PCB list the pcblist sysctls 2019-11-07 21:27:32 +00:00
ip_divert.h
ip_dummynet.h
ip_ecn.c
ip_ecn.h
ip_encap.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
ip_encap.h Add KPI that can be used by tunneling interfaces to handle IP addresses 2018-10-21 17:55:26 +00:00
ip_fastfwd.c New pfil(9) KPI together with newborn pfil API and control utility. 2019-01-31 23:01:03 +00:00
ip_fw.h Add "tcpmss" opcode to match the TCP MSS value. 2019-06-21 10:54:51 +00:00
ip_gre.c Add GRE-in-UDP encapsulation support as defined in RFC8086. 2019-04-24 09:05:45 +00:00
ip_icmp.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
ip_icmp.h
ip_id.c
ip_input.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
ip_mroute.c Reduce the vnet_set module size of ip_mroute to allow loading as a module. 2019-11-19 15:38:55 +00:00
ip_mroute.h
ip_options.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
ip_options.h
ip_output.c Revert most of the multicast changes from r353292. This needs a more 2019-10-09 17:03:20 +00:00
ip_reass.c Properly set VNET when nuking recvif from fragment queues. 2019-10-25 18:54:06 +00:00
ip_var.h This commit adds BBR (Bottleneck Bandwidth and RTT) congestion control. This 2019-09-24 18:18:11 +00:00
ip.h
pim_var.h
pim.h
raw_ip.c Now that there is no R/W lock on PCB list the pcblist sysctls 2019-11-07 21:27:32 +00:00
sctp_asconf.c Validate length before use it, not vice versa. 2019-10-08 11:07:16 +00:00
sctp_asconf.h
sctp_auth.c Only allow a SCTP-AUTH shared key to be updated by the application 2019-09-17 09:46:42 +00:00
sctp_auth.h Remove unused code. 2018-09-18 10:53:07 +00:00
sctp_bsd_addr.c Use an event handler to notify the SCTP about IP address changes 2019-10-13 18:17:08 +00:00
sctp_bsd_addr.h Use an event handler to notify the SCTP about IP address changes 2019-10-13 18:17:08 +00:00
sctp_cc_functions.c Rename sctp_dtrace_declare.h to sctp_kdtrace.h for consistentcy. 2019-10-14 13:02:49 +00:00
sctp_constants.h Limit the user-controllable amount of memory the kernel allocates 2019-01-16 11:33:47 +00:00
sctp_crc32.c When the IP layer calls back into the SCTP layer to perform the SCTP 2019-09-15 18:29:45 +00:00
sctp_crc32.h
sctp_header.h
sctp_indata.c Plumb an mbuf leak in a code path that should not be taken. Also avoid 2019-10-06 08:47:10 +00:00
sctp_indata.h Fix initialization of top_fsn. 2019-09-01 10:39:16 +00:00
sctp_input.c Plug two mbuf leaks during INIT-ACK handling. 2019-11-27 19:32:29 +00:00
sctp_input.h
sctp_kdtrace.c Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
sctp_kdtrace.h Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
sctp_lock_bsd.h
sctp_os_bsd.h Improve consistency. No functional change. 2019-08-05 13:22:15 +00:00
sctp_os.h
sctp_output.c Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
sctp_output.h Improve the handling of state cookie parameters in INIT-ACK chunks. 2019-09-01 10:09:53 +00:00
sctp_pcb.c Move SCTP DTrace probe definitions into a .c file. 2019-10-13 16:14:04 +00:00
sctp_pcb.h Store a handle for the event handler. This will be used when unloading the 2019-10-24 09:22:23 +00:00
sctp_peeloff.c
sctp_peeloff.h
sctp_ss_functions.c Initialize scheduler specific data for the FCFS scheduler. 2019-03-25 16:40:54 +00:00
sctp_structs.h Fix build issue for the userland stack. 2019-03-24 12:13:05 +00:00
sctp_syscalls.c
sctp_sysctl.c Plug some networking sysctl leaks. 2018-11-22 20:49:41 +00:00
sctp_sysctl.h Add initial descriptions for SCTP related MIB variable. 2018-10-26 21:04:17 +00:00
sctp_timer.c
sctp_timer.h
sctp_uio.h
sctp_usrreq.c When changing the MTU of an SCTP path, not only cancel all ongoing 2019-12-01 17:35:36 +00:00
sctp_var.h
sctp.h Limit the size of messages sent on 1-to-many style SCTP sockets with the 2019-03-23 22:56:03 +00:00
sctputil.c Separate out SCTP related dtrace code. 2019-10-14 20:32:11 +00:00
sctputil.h Cleanup the RTO calculation and perform some consistency checks 2019-09-22 10:40:15 +00:00
siftr.c In r343587 a simple port filter as sysctl tunable was added to siftr. 2019-10-07 20:35:04 +00:00
tcp_debug.c
tcp_debug.h
tcp_fastopen.c
tcp_fastopen.h
tcp_fsm.h
tcp_hostcache.c
tcp_hostcache.h
tcp_hpts.c In TCP HPTS enter the epoch in tcp_hpts_thread() and assert it in 2019-11-07 21:30:27 +00:00
tcp_hpts.h This commit updates rack to what is basically being used at NF as 2019-07-10 20:40:39 +00:00
tcp_input.c Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
tcp_log_buf.c Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
tcp_log_buf.h This commit updates rack to what is basically being used at NF as 2019-07-10 20:40:39 +00:00
tcp_lro.c Mechanically convert INP_INFO_RLOCK() to NET_EPOCH_ENTER(). 2019-11-07 00:08:34 +00:00
tcp_lro.h This adds the final tweaks to LRO that will now allow me 2019-09-06 14:25:41 +00:00
tcp_offload.c Add a TOE KTLS mode and a TOE hook for allocating TLS sessions. 2019-10-08 21:34:06 +00:00
tcp_offload.h Add a TOE KTLS mode and a TOE hook for allocating TLS sessions. 2019-10-08 21:34:06 +00:00
tcp_output.c Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
tcp_pcap.c Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
tcp_pcap.h
tcp_ratelimit.c Factor out TCP rateset destruction code. 2019-10-09 17:08:40 +00:00
tcp_ratelimit.h Fix the ifdefs in tcp_ratelimit.h. They were reversed so 2019-09-24 20:04:31 +00:00
tcp_reass.c This patch addresses an issue brought up by bz@ in D18968: 2019-02-21 09:34:47 +00:00
tcp_sack.c Don't write to memory outside of the allocated array for SACK blocks. 2019-09-16 08:18:05 +00:00
tcp_seq.h
tcp_stats.c Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
tcp_subr.c Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
tcp_syncache.c Move all ECN related flags from the flags to the flags2 field. 2019-12-01 21:01:33 +00:00
tcp_syncache.h In order for the TCP Handshake to support ECN++, and further ECN-related 2019-12-01 18:05:02 +00:00
tcp_timer.c TCP timers are executed in callout context, so they need to enter network 2019-11-07 00:27:23 +00:00
tcp_timer.h Add sysctl variable net.inet.tcp.rexmit_initial for setting RTO.Initial 2019-03-23 21:36:59 +00:00
tcp_timewait.c Mechanically convert INP_INFO_RLOCK() to NET_EPOCH_ENTER() in TCP 2019-11-07 21:29:38 +00:00
tcp_usrreq.c Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
tcp_var.h Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
tcp.h Make use of the stats(3) framework in the TCP stack. 2019-12-02 20:58:04 +00:00
tcpip.h
toecore.c In order for the TCP Handshake to support ECN++, and further ECN-related 2019-12-01 18:05:02 +00:00
toecore.h In order for the TCP Handshake to support ECN++, and further ECN-related 2019-12-01 18:05:02 +00:00
udp_usrreq.c Now that there is no R/W lock on PCB list the pcblist sysctls 2019-11-07 21:27:32 +00:00
udp_var.h
udp.h
udplite.h