Delete the example tcp stack "fastpath" whichwas only put in has an example.Sponsored by: Netflix inc.Differential Revision: https://reviews.freebsd.org/D16420
Take out the stack alias inadvertantly added by my commit.Reported by: Peter Lei
This commit brings in a new refactored TCP stack called Rack.Rack includes the following features: - A different SACK processing scheme (the old sack structures are not used). - RACK (Recent ackno
This commit brings in a new refactored TCP stack called Rack.Rack includes the following features: - A different SACK processing scheme (the old sack structures are not used). - RACK (Recent acknowledgment) where counting dup-acks is no longer done instead time is used to knwo when to retransmit. (see the I-D) - TLP (Tail Loss Probe) where we will probe for tail-losses to attempt to try not to take a retransmit time-out. (see the I-D) - Burst mitigation using TCPHTPS - PRR (partial rate reduction) see the RFC.Once built into your kernel, you can select this stack by eithersocket option with the name of the stack is "rack" or by settingthe global sysctl so the default is rack.Note that any connection that does not support SACK will be kickedback to the "default" base FreeBSD stack (currently known as "default").To build this into your kernel you will need to enable in yourkernel: makeoptions WITH_EXTRA_TCP_STACKS=1 options TCPHPTSSponsored by: Netflix Inc.Differential Revision: https://reviews.freebsd.org/D15525
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Tweak the Makefiles a bit to allow using "tcp" in MODULES_OVERRIDEto build the tcp modules.Sponsored by: Netflix, Inc.
sys/modules: normalize .CURDIR-relative paths to SRCTOPThis simplifies make output/logicTested with: `cd sys/modules; make ALL_MODULES=` on amd64MFC after: 1 monthSponsored by: Dell EMC Isilon
Merge projects/ipsec into head/. Small summary -------------o Almost all IPsec releated code was moved into sys/netipsec.o New kernel modules added: ipsec.ko and tcpmd5.ko. New kernel option
Merge projects/ipsec into head/. Small summary -------------o Almost all IPsec releated code was moved into sys/netipsec.o New kernel modules added: ipsec.ko and tcpmd5.ko. New kernel option IPSEC_SUPPORT added. It enables support for loading and unloading of ipsec.ko and tcpmd5.ko kernel modules.o IPSEC_NAT_T option was removed. Now NAT-T support is enabled by default. The UDP_ENCAP_ESPINUDP_NON_IKE encapsulation type support was removed. Added TCP/UDP checksum handling for inbound packets that were decapsulated by transport mode SAs. setkey(8) modified to show run-time NAT-T configuration of SA.o New network pseudo interface if_ipsec(4) added. For now it is build as part of ipsec.ko module (or with IPSEC kernel). It implements IPsec virtual tunnels to create route-based VPNs.o The network stack now invokes IPsec functions using special methods. The only one header file <netipsec/ipsec_support.h> should be included to declare all the needed things to work with IPsec.o All IPsec protocols handlers (ESP/AH/IPCOMP protosw) were removed. Now these protocols are handled directly via IPsec methods.o TCP_SIGNATURE support was reworked to be more close to RFC.o PF_KEY SADB was reworked: - now all security associations stored in the single SPI namespace, and all SAs MUST have unique SPI. - several hash tables added to speed up lookups in SADB. - SADB now uses rmlock to protect access, and concurrent threads can do SA lookups in the same time. - many PF_KEY message handlers were reworked to reflect changes in SADB. - SADB_UPDATE message was extended to support new PF_KEY headers: SADB_X_EXT_NEW_ADDRESS_SRC and SADB_X_EXT_NEW_ADDRESS_DST. They can be used by IKE daemon to change SA addresses.o ipsecrequest and secpolicy structures were cardinally changed to avoid locking protection for ipsecrequest. Now we support only limited number (4) of bundled SAs, but they are supported for both INET and INET6.o INPCB security policy cache was introduced. Each PCB now caches used security policies to avoid SP lookup for each packet.o For inbound security policies added the mode, when the kernel does check for full history of applied IPsec transforms.o References counting rules for security policies and security associations were changed. The proper SA locking added into xform code.o xform code was also changed. Now it is possible to unregister xforms. tdb_xxx structures were changed and renamed to reflect changes in SADB/SPDB, and changed rules for locking and refcounting.Reviewed by: gnn, wblockObtained from: Yandex LLCRelnotes: yesSponsored by: Yandex LLCDifferential Revision: https://reviews.freebsd.org/D9352
Cleanup unneded include "opt_ipfw.h".It was used for conditional build IPFIREWALL_FORWARD support.But IPFIREWALL_FORWARD option was removed a long time ago.
opt_kdtrace.h is not needed for SDT probes as of r258541.
Fix 'make depend'
First cut of the modularization of our TCP stack. Stillto do is to clean up the timer handling using the async-drain.Other optimizations may be coming to go with this. Whats herewill allow differn
First cut of the modularization of our TCP stack. Stillto do is to clean up the timer handling using the async-drain.Other optimizations may be coming to go with this. Whats herewill allow differnet tcp implementations (one included).Reviewed by: jtl, hiren, transportsSponsored by: Netflix Inc.Differential Revision: D4055