Date: Tue, 20 Jul 2021 13:40:30 +0300 From: Dmitry Chagin <dchagin@freebsd.org> To: Kristof Provost <kp@freebsd.org> Cc: src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: 8e1864ed0712 - main - pf: syncookie support Message-ID: <YPaoHk7M1GByBzLh@heemeyer.club> In-Reply-To: <202107200836.16K8asPR040892@gitrepo.freebsd.org> References: <202107200836.16K8asPR040892@gitrepo.freebsd.org>
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On Tue, Jul 20, 2021 at 08:36:54AM +0000, Kristof Provost wrote: > The branch main has been updated by kp: > > URL: https://cgit.FreeBSD.org/src/commit/?id=8e1864ed07121b479b95d7e3a5931a9e0ffd4713 > > commit 8e1864ed07121b479b95d7e3a5931a9e0ffd4713 > Author: Kristof Provost <kp@FreeBSD.org> > AuthorDate: 2021-05-20 09:54:41 +0000 > Commit: Kristof Provost <kp@FreeBSD.org> > CommitDate: 2021-07-20 08:36:13 +0000 > > pf: syncookie support > > Import OpenBSD's syncookie support for pf. This feature help pf resist > TCP SYN floods by only creating states once the remote host completes > the TCP handshake rather than when the initial SYN packet is received. > > This is accomplished by using the initial sequence numbers to encode a > cookie (hence the name) in the SYN+ACK response and verifying this on > receipt of the client ACK. > > Reviewed by: kbowling > Obtained from: OpenBSD > MFC after: 1 week > Sponsored by: Modirum MDPay > Differential Revision: https://reviews.freebsd.org/D31138 NOINET6 build fails --- vers.c --- MAKE="make" sh /home/dchagin/freebsd/sys/conf/newvers.sh LINT-NOINET6 --- vers.o --- cc -target i386-unknown-freebsd14.0 --sysroot=/home/dchagin/tmp/obj/home/dchagin/freebsd/i386.i386/tmp -B/home/dchagin/tmp/obj/home/dchagin/freebsd/i386.i386/tmp/usr/bin -c -O2 -pipe -fno-strict-aliasing -nostdinc -I. -I/home/dchagin/freebsd/sys -I/home/dchagin/freebsd/sys/contrib/ck/include -I/home/dchagin/freebsd/sys/contrib/libfdt -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common -fno-builtin -fdebug-prefix-map=./machine=/home/dchagin/freebsd/sys/i386/include -fdebug-prefix-map=./x86=/home/dchagin/freebsd/sys/x86/include -mno-mmx -mno-sse -msoft-float -ffreestanding -fwrapv -fstack-protector -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wcast-qual -Wundef -Wno-pointer-sign -D__printf__=__freebsd_kprintf__ -Wmissing-include-dirs -fdiagnostics-show-option -Wno-unknown-pragmas -Wno-error=tautological-compare -Wno-error=empty-body -Wno-error=parentheses-equality -Wno-error=unused-function -Wno-error=pointer-sign -Wno-error=shift-negative-value -Wno-address-of-packed-member -Wno-format-zero-length -mno-aes -mno-avx -std=iso9899:1999 -Werror vers.c --- kernel --- linking kernel ld: warning: common OPENSSL_ia32cap_P is overridden ld: warning: common OPENSSL_ia32cap_P is overridden ld: warning: common OPENSSL_ia32cap_P is overridden ld: warning: common OPENSSL_ia32cap_P is overridden ld: warning: common OPENSSL_ia32cap_P is overridden ld: error: undefined symbol: pf_synflood_check >>> referenced by pf.c >>> pf.o:(pf_test) ld: error: undefined symbol: pf_syncookie_send >>> referenced by pf.c >>> pf.o:(pf_test) ld: error: undefined symbol: pf_syncookie_validate >>> referenced by pf.c >>> pf.o:(pf_test) ld: error: undefined symbol: pf_syncookie_recreate_syn >>> referenced by pf.c >>> pf.o:(pf_test) ld: error: undefined symbol: pf_syncookies_init >>> referenced by pf_ioctl.c >>> pf_ioctl.o:(vnet_pf_init) ld: error: undefined symbol: pf_set_syncookies >>> referenced by pf_ioctl.c >>> pf_ioctl.o:(pfioctl) ld: error: undefined symbol: pf_get_syncookies >>> referenced by pf_ioctl.c >>> pf_ioctl.o:(pfioctl) *** [kernel] Error code 1 make[5]: stopped in /home/dchagin/tmp/obj/home/dchagin/freebsd/i386.i386/sys/LINT-NOINET6 1 error make[5]: stopped in /home/dchagin/tmp/obj/home/dchagin/freebsd/i386.i386/sys/LINT-NOINET6 make[4]: stopped in /home/dchagin/freebsd make[3]: stopped in /home/dchagin/freebsd
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