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521eac97f3
freebsd-skq/sys/netinet
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John Baldwin 521eac97f3 Support hardware rate limiting (pacing) with TLS offload. 
- Add a new send tag type for a send tag that supports both rate
  limiting (packet pacing) and TLS offload (mostly similar to D22669
  but adds a separate structure when allocating the new tag type).

- When allocating a send tag for TLS offload, check to see if the
  connection already has a pacing rate.  If so, allocate a tag that
  supports both rate limiting and TLS offload rather than a plain TLS
  offload tag.

- When setting an initial rate on an existing ifnet KTLS connection,
  set the rate in the TCP control block inp and then reset the TLS
  send tag (via ktls_output_eagain) to reallocate a TLS + ratelimit
  send tag.  This allocates the TLS send tag asynchronously from a
  task queue, so the TLS rate limit tag alloc is always sleepable.

- When modifying a rate on a connection using KTLS, look for a TLS
  send tag.  If the send tag is only a plain TLS send tag, assume we
  failed to allocate a TLS ratelimit tag (either during the
  TCP_TXTLS_ENABLE socket option, or during the send tag reset
  triggered by ktls_output_eagain) and ignore the new rate.  If the
  send tag is a ratelimit TLS send tag, change the rate on the TLS tag
  and leave the inp tag alone.

- Lock the inp lock when setting sb_tls_info for a socket send buffer
  so that the routines in tcp_ratelimit can safely dereference the
  pointer without needing to grab the socket buffer lock.

- Add an IFCAP_TXTLS_RTLMT capability flag and associated
  administrative controls in ifconfig(8).  TLS rate limit tags are
  only allocated if this capability is enabled.  Note that TLS offload
  (whether unlimited or rate limited) always requires IFCAP_TXTLS[46].

Reviewed by:	gallatin, hselasky
Relnotes:	yes
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D26691
2020-10-29 00:23:16 +00:00
..
cc TCP Cubic: improve reaction to (and rollback from) RTO 2020-10-24 16:11:46 +00:00
khelp
libalias net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
netdump Use zfree() instead of explicit_bzero() and free(). 2020-06-25 20:17:34 +00:00
tcp_stacks So it turns out that syzkaller hit another crash. It has to do with switching 2020-09-09 11:11:50 +00:00
accf_data.c Define a module version for accept filter modules. 2020-05-19 18:35:08 +00:00
accf_dns.c Define a module version for accept filter modules. 2020-05-19 18:35:08 +00:00
accf_http.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
dccp.h Add header definition for RFC4340, Datagram Congestion Control Protocol 2020-06-17 13:27:13 +00:00
icmp6.h icmp6: Count packets dropped due to an invalid hop limit 2020-10-19 17:07:19 +00:00
icmp_var.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_ether.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_ether.h
igmp_var.h
igmp.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
igmp.h
in_cksum.c
in_debug.c
in_fib.c Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in_fib.h Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in_gif.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +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 Simplify NET_EPOCH_EXIT in inp_join_group(). 2020-10-18 12:03:36 +00:00
in_pcb.c Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in_pcb.h Add IP(V6)_VLAN_PCP to set 802.1 priority per-flow. 2020-10-09 12:06:43 +00:00
in_pcbgroup.c
in_prot.c
in_proto.c Remove unused nhop_ref_any() function. 2020-09-20 21:32:52 +00:00
in_rmx.c Introduce scalable route multipath. 2020-10-03 10:47:17 +00:00
in_rss.c Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in_rss.h Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in_systm.h
in_var.h Simplify dom_<rtattach|rtdetach>. 2020-08-14 21:29:56 +00:00
in.c Implement SIOCGIFALIAS. 2020-10-14 09:22:54 +00:00
in.h Add IP(V6)_VLAN_PCP to set 802.1 priority per-flow. 2020-10-09 12:06:43 +00:00
ip6.h Remove stale definitions. The removed definitions are not used right 2020-03-01 12:34:27 +00:00
ip_carp.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_carp.h carp: replace caddr_t with char * 2019-12-06 16:35:48 +00:00
ip_divert.c Add the SCTP_SUPPORT kernel option. 2020-06-18 19:32:34 +00:00
ip_divert.h
ip_dummynet.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_ecn.c
ip_ecn.h
ip_encap.c Widen NET_EPOCH coverage. 2019-10-07 22:40:05 +00:00
ip_encap.h
ip_fastfwd.c Convert IP/IPv6 forwarding, ICMP processing and IP PCB laddr selection to 2020-04-14 23:06:25 +00:00
ip_fw.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_gre.c Introduce NET_EPOCH_CALL() macro and use it everywhere where we free 2020-01-15 06:05:20 +00:00
ip_icmp.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_icmp.h
ip_id.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
ip_input.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_mroute.c ip_mroute: fix the viftable export sysctl 2020-10-11 00:01:00 +00:00
ip_mroute.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_options.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_options.h
ip_output.c Add IP(V6)_VLAN_PCP to set 802.1 priority per-flow. 2020-10-09 12:06:43 +00:00
ip_reass.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +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 Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
sctp_asconf.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_asconf.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_auth.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_auth.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_bsd_addr.c Use __func__ instead of __FUNCTION__ for consistency. 2020-10-04 15:37:34 +00:00
sctp_bsd_addr.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_cc_functions.c Minor cleanups. 2020-10-07 15:22:48 +00:00
sctp_constants.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_crc32.c No need to include netinet/sctp_crc32.h twice. 2020-06-22 14:36:14 +00:00
sctp_crc32.h Add the SCTP_SUPPORT kernel option. 2020-06-18 19:32:34 +00:00
sctp_header.h Whitespace changes. 2020-09-24 12:26:06 +00:00
sctp_indata.c Use __func__ instead of __FUNCTION__ for consistency. 2020-10-04 15:37:34 +00:00
sctp_indata.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_input.c Improve the handling of cookie life times. 2020-10-16 10:44:48 +00:00
sctp_input.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
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 Whitespace changes. 2020-09-24 12:26:06 +00:00
sctp_module.c Provide support for building SCTP as a loadable module. 2020-07-10 14:56:05 +00:00
sctp_os_bsd.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_os.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_output.c Improve the handling of cookie life times. 2020-10-16 10:44:48 +00:00
sctp_output.h Whitespace changes. 2020-09-24 12:26:06 +00:00
sctp_pcb.c Ensure variables are initialized before used. 2020-10-06 11:29:08 +00:00
sctp_pcb.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_peeloff.c Non-functional changes due to upstream cleanup. 2020-06-11 13:34:09 +00:00
sctp_peeloff.h
sctp_ss_functions.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_structs.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_syscalls.c Cleanup, no functional change intended. 2020-07-12 18:34:09 +00:00
sctp_sysctl.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_sysctl.h Improve the handling of cookie life times. 2020-10-16 10:44:48 +00:00
sctp_timer.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_timer.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_uio.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_usrreq.c Improve the handling of cookie life times. 2020-10-16 10:44:48 +00:00
sctp_var.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp.h Improve the handling of cookie life times. 2020-10-16 10:44:48 +00:00
sctputil.c Remove dead stores reported by clang static code analysis 2020-10-06 11:08:52 +00:00
sctputil.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
siftr.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_debug.c
tcp_debug.h
tcp_fastopen.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_fastopen.h
tcp_fsm.h White space cleanup -- remove trailing tab's or spaces 2020-02-12 13:31:36 +00:00
tcp_hostcache.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
tcp_hostcache.h
tcp_hpts.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_hpts.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_input.c tcp: move cwnd and ssthresh updates into cc modules 2020-10-24 16:09:18 +00:00
tcp_log_buf.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_log_buf.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_lro.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_lro.h White space cleanup -- remove trailing tab's or spaces 2020-02-12 13:31:36 +00:00
tcp_offload.c Initial support for kernel offload of TLS receive. 2020-04-27 23:17:19 +00:00
tcp_offload.h Initial support for kernel offload of TLS receive. 2020-04-27 23:17:19 +00:00
tcp_output.c Stop sending tiny new data segments during SACK recovery 2020-10-09 12:44:56 +00:00
tcp_pcap.c Step 4.2: start divorce of M_EXT and M_EXTPG 2020-05-03 00:37:16 +00:00
tcp_pcap.h
tcp_ratelimit.c Support hardware rate limiting (pacing) with TLS offload. 2020-10-29 00:23:16 +00:00
tcp_ratelimit.h Fix copyright year and eliminate the obsolete all rights reserved line. 2020-04-08 17:55:45 +00:00
tcp_reass.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_sack.c Stop sending tiny new data segments during SACK recovery 2020-10-09 12:44:56 +00:00
tcp_seq.h
tcp_stats.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
tcp_subr.c Save the current TCP pacing rate in t_pacing_rate. 2020-10-29 00:03:19 +00:00
tcp_syncache.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_syncache.h Fix the following issues related to the TCP SYN-cache: 2020-08-10 20:24:48 +00:00
tcp_timer.c Improve the TCP blackhole detection. The principle is to reduce the 2020-04-14 16:35:05 +00:00
tcp_timer.h Reduce default TCP delayed ACK timeout to 40ms. 2020-04-16 15:59:23 +00:00
tcp_timewait.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
tcp_usrreq.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
tcp_var.h Save the current TCP pacing rate in t_pacing_rate. 2020-10-29 00:03:19 +00:00
tcp.h TCP: send full initial window when timestamps are in use 2020-09-25 10:38:19 +00:00
tcpip.h
toecore.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
toecore.h Initial support for kernel offload of TLS receive. 2020-04-27 23:17:19 +00:00
udp_usrreq.c Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
udp_var.h Add a knob to allow zero UDP checksums for UDP/IPv6 traffic on the given UDP port. 2020-09-18 02:21:15 +00:00
udp.h White space cleanup -- remove trailing tab's or spaces 2020-02-12 13:31:36 +00:00
udplite.h White space cleanup -- remove trailing tab's or spaces 2020-02-12 13:31:36 +00:00