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freebsd-skq/sys/netinet
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Jonathan T. Looney 95a914f631 Address concerns about CPU usage while doing TCP reassembly. 
Currently, the per-queue limit is a function of the receive buffer
size and the MSS.  In certain cases (such as connections with large
receive buffers), the per-queue segment limit can be quite large.
Because we process segments as a linked list, large queues may not
perform acceptably.

The better long-term solution is to make the queue more efficient.
But, in the short-term, we can provide a way for a system
administrator to set the maximum queue size.

We set the default queue limit to 100.  This is an effort to balance
performance with a sane resource limit.  Depending on their
environment, goals, etc., an administrator may choose to modify this
limit in either direction.

Reviewed by:	jhb
Approved by:	so
Security:	FreeBSD-SA-18:08.tcp
Security:	CVE-2018-6922
2018-08-06 17:36:57 +00:00
..
cc
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
khelp
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
libalias
Remove a duplicate check.
2018-07-11 14:54:56 +00:00
netdump
UDP: further performance improvements on tx
2018-05-23 21:02:14 +00:00
tcp_stacks
This fixes a bug in Rack where we were
2018-08-06 09:22:07 +00:00
accf_data.c
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
accf_dns.c
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
accf_http.c
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
icmp6.h
Correct the comment describing badrs which is bad router solicitiation,
2017-12-29 07:23:18 +00:00
icmp_var.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
if_ether.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
if_ether.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
igmp_var.h
Separate list manipulation locking from state change in multicast
2018-05-02 19:36:29 +00:00
igmp.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
igmp.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
in_cksum.c
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
in_debug.c
CK: update consumers to use CK macros across the board
2018-05-24 23:21:23 +00:00
in_fib.c
Switch RIB and RADIX_NODE_HEAD lock from rwlock(9) to rmlock(9).
2018-06-16 08:26:23 +00:00
in_fib.h
Renumber copyright clause 4
2017-02-28 23:42:47 +00:00
in_gif.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
in_jail.c
Move most of the contents of opt_compat.h to opt_global.h.
2018-04-06 17:35:35 +00:00
in_kdtrace.c
Add a dtrace provider for UDP-Lite.
2018-07-31 22:56:03 +00:00
in_kdtrace.h
Add a dtrace provider for UDP-Lite.
2018-07-31 22:56:03 +00:00
in_mcast.c
- Fix a double unlock in inp_block_unblock_source() and
2018-07-04 06:47:34 +00:00
in_pcb.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
in_pcb.h
Now that after r335979 the kernel addresses in API structures are
2018-08-04 00:03:21 +00:00
in_pcbgroup.c
Fix PCBGROUPS build post CK conversion of pcbinfo
2018-06-13 23:19:54 +00:00
in_prot.c
Move most of the contents of opt_compat.h to opt_global.h.
2018-04-06 17:35:35 +00:00
in_proto.c
Remove empty encap_init() function.
2018-05-29 12:32:08 +00:00
in_rmx.c
…
in_rss.c
…
in_rss.h
…
in_systm.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
in_var.h
UDP: further performance improvements on tx
2018-05-23 21:02:14 +00:00
in.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
in.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
ip6.h
carp: Set DSCP value CS7
2018-07-01 08:37:07 +00:00
ip_carp.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
ip_carp.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
ip_divert.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
ip_divert.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
ip_dummynet.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
ip_ecn.c
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
ip_ecn.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
ip_encap.c
epoch(9): allow preemptible epochs to compose
2018-07-04 02:47:16 +00:00
ip_encap.h
Rework IP encapsulation handling code.
2018-06-05 20:51:01 +00:00
ip_fastfwd.c
netpfil: Introduce PFIL_FWD flag
2018-03-23 16:56:44 +00:00
ip_fw.h
Add "record-state", "set-limit" and "defer-action" rule options to ipfw.
2018-07-09 11:35:18 +00:00
ip_gre.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
ip_icmp.c
icmp_quotelen was accidentially changes in r336676, undo this.
2018-07-24 16:45:01 +00:00
ip_icmp.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
ip_id.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
ip_input.c
Make timespecadd(3) and friends public
2018-07-30 15:46:40 +00:00
ip_mroute.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
ip_mroute.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
ip_options.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
ip_options.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
ip_output.c
Fix a potential use after free in getsockopt() access to inp_options
2018-07-22 20:02:14 +00:00
ip_reass.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
ip_var.h
ip(6)_freemoptions: defer imo destruction to epoch callback task
2018-05-20 00:22:28 +00:00
ip.h
carp: Set DSCP value CS7
2018-07-01 08:37:07 +00:00
pim_var.h
Rework IP encapsulation handling code.
2018-06-05 20:51:01 +00:00
pim.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
raw_ip.c
Removed pointless NULL check
2018-07-10 08:05:32 +00:00
sctp_asconf.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_asconf.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_auth.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_auth.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_bsd_addr.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_bsd_addr.h
Revert https://svnweb.freebsd.org/changeset/base/336503
2018-07-19 20:11:14 +00:00
sctp_cc_functions.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_constants.h
Add constant for the PAD chunk as defined in RFC 4820.
2018-01-27 13:46:55 +00:00
sctp_crc32.c
Revert https://svnweb.freebsd.org/changeset/base/336503
2018-07-19 20:11:14 +00:00
sctp_crc32.h
When adding support for sending SCTP packets containing an ABORT chunk
2017-12-26 12:35:02 +00:00
sctp_dtrace_declare.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
sctp_dtrace_define.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
sctp_header.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_indata.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_indata.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_input.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_input.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_lock_bsd.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
sctp_os_bsd.h
Move most of the contents of opt_compat.h to opt_global.h.
2018-04-06 17:35:35 +00:00
sctp_os.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
sctp_output.c
Revert https://svnweb.freebsd.org/changeset/base/336503
2018-07-19 20:11:14 +00:00
sctp_output.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_pcb.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_pcb.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_peeloff.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_peeloff.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
sctp_ss_functions.c
Revert https://svnweb.freebsd.org/changeset/base/336503
2018-07-19 20:11:14 +00:00
sctp_structs.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_syscalls.c
netinet silence warnings
2018-05-19 05:56:21 +00:00
sctp_sysctl.c
Revert https://svnweb.freebsd.org/changeset/base/336503
2018-07-19 20:11:14 +00:00
sctp_sysctl.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
sctp_timer.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_timer.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
sctp_uio.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_usrreq.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp_var.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctp.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctputil.c
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
sctputil.h
Whitespace changes due to changes in ident.
2018-07-19 20:16:33 +00:00
siftr.c
Create a new macro for static DPCPU data.
2018-07-05 17:13:37 +00:00
tcp_debug.c
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
tcp_debug.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
tcp_fastopen.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
tcp_fastopen.h
Greatly reduce the number of #ifdefs supporting the TCP_RFC7413 kernel option.
2018-02-26 03:03:41 +00:00
tcp_fsm.h
Revert r334843, and partially revert r335180.
2018-06-23 06:53:53 +00:00
tcp_hostcache.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
tcp_hostcache.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
tcp_hpts.c
epoch(9): allow preemptible epochs to compose
2018-07-04 02:47:16 +00:00
tcp_hpts.h
epoch(9): allow preemptible epochs to compose
2018-07-04 02:47:16 +00:00
tcp_input.c
Fix some TCP fast open issues.
2018-07-30 20:35:50 +00:00
tcp_log_buf.c
Clean up some debugging code left in tcp_log_buf.c from r331347.
2018-04-10 15:51:37 +00:00
tcp_log_buf.h
This commit brings in a new refactored TCP stack called Rack.
2018-06-07 18:18:13 +00:00
tcp_lro.c
Update tcp_lro with tested bugfixes from Netflix and LLNW:
2018-03-09 00:08:43 +00:00
tcp_lro.h
sys: general adoption of SPDX licensing ID tags.
2017-11-27 15:23:17 +00:00
tcp_offload.c
Revert r334843, and partially revert r335180.
2018-06-23 06:53:53 +00:00
tcp_offload.h
Add a hook to allow the toedev handling an offloaded connection to
2018-04-03 01:08:54 +00:00
tcp_output.c
Fix some TCP fast open issues.
2018-07-30 20:35:50 +00:00
tcp_pcap.c
The TCPPCAP debugging feature caches recently-used mbufs for use in
2016-07-06 16:17:13 +00:00
tcp_pcap.h
The TCPPCAP debugging feature caches recently-used mbufs for use in
2016-07-06 16:17:13 +00:00
tcp_reass.c
Address concerns about CPU usage while doing TCP reassembly.
2018-08-06 17:36:57 +00:00
tcp_sack.c
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
tcp_seq.h
r330675 introduced an extra window check in the LRO code to ensure it
2018-04-03 13:54:38 +00:00
tcp_subr.c
Use the new VNET_DEFINE_STATIC macro when we are defining static VNET
2018-07-24 16:35:52 +00:00
tcp_syncache.c
Add missing send/recv dtrace probes for TCP.
2018-07-30 20:13:38 +00:00
tcp_syncache.h
When retransmitting TCP SYN-ACK segments with the TCP timestamp option
2018-06-15 12:28:43 +00:00
tcp_timer.c
epoch(9): allow preemptible epochs to compose
2018-07-04 02:47:16 +00:00
tcp_timer.h
epoch(9): allow preemptible epochs to compose
2018-07-04 02:47:16 +00:00
tcp_timewait.c
Send consistent SEG.WIN when using timewait codepath for TCP.
2018-07-30 21:13:42 +00:00
tcp_usrreq.c
Fix INET only builds.
2018-07-31 06:27:05 +00:00
tcp_var.h
Make struct xinpcb and friends word-size independent.
2018-07-05 13:13:48 +00:00
tcp.h
This commit brings in a new refactored TCP stack called Rack.
2018-06-07 18:18:13 +00:00
tcpip.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
toecore.c
Add a hook to allow the toedev handling an offloaded connection to
2018-04-03 01:08:54 +00:00
toecore.h
Add a hook to allow the toedev handling an offloaded connection to
2018-04-03 01:08:54 +00:00
udp_usrreq.c
Add a dtrace provider for UDP-Lite.
2018-07-31 22:56:03 +00:00
udp_var.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
udp.h
sys: further adoption of SPDX licensing ID tags.
2017-11-20 19:43:44 +00:00
udplite.h
Add a dtrace provider for UDP-Lite.
2018-07-31 22:56:03 +00:00