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sommerfeld 17aee57321 Relax overly-conservative TCP option parsing used by ipnat when 
hunting for an MSS option to clamp.  The previous code assumed that at least
one more byte of options (such as a TCPOPT_EOL) would follow the MSS
option; now, we allow the MSS option to end on the last byte of the
TCP header.

Packets have been observed "in the wild" with a TCP header length of
'6' (24 bytes.. 20 bytes fixed header, 4 bytes options) with a 4-byte
MSS option exactly filling the 4 bytes of options payload and no
following TCPOPT_EOL.

RFC793 is quite explicit that the EOL byte:

	" .. need only be used if the end of the options would not
	otherwise coincide with the end of the TCP header."
 		2002-09-24 14:14:25 +00:00
..
Makefile
…
fil.c Resync with official IPF 2002-09-19 08:12:43 +00:00
icmp6.h whitespace 2002-06-09 16:33:36 +00:00
icmp_var.h Changes to allow the IPv4 and IPv6 layers to align headers themseves, 2002-06-30 22:40:32 +00:00
if_arp.c If we need to fix up ar_hrd field, we must do it before using ar_tpa/tha. 2002-06-25 04:16:31 +00:00
if_atm.c KNF - return is not a function. sync w/kame. 2002-09-11 02:46:42 +00:00
if_atm.h whitespace 2002-06-09 16:33:36 +00:00
if_ether.h
…
if_inarp.h pull post-4.4BSD change to sys/net/route.c from BSD/OS 4.2 (UCB copyrighted). 2001-01-17 04:05:41 +00:00
igmp.c avoid swapping endian of ip_len and ip_off on mbuf, to meet with M_LEADINGSPACE 2002-08-14 00:23:27 +00:00
igmp.h
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igmp_var.h Changes to allow the IPv4 and IPv6 layers to align headers themseves, 2002-06-30 22:40:32 +00:00
in.c KNF - return is not a function. sync w/kame. 2002-09-11 02:46:42 +00:00
in.h Define uint{8,32}_t locally, per XNS5.2/POSIX-2001, and use them in this 2002-05-13 13:34:32 +00:00
in4_cksum.c be friendly with gcc-3.1.1 -O2, which takes advantage of ANSI C 2002-07-29 09:14:36 +00:00
in_cksum.c whitespace 2002-06-09 16:33:36 +00:00
in_gif.c KNF - return is not a function. sync w/kame. 2002-09-11 02:46:42 +00:00
in_gif.h gif interface now uses generic software interrupt 2001-08-16 17:45:25 +00:00
in_pcb.c share policy-on-pcb for listening socket. sync w/kame 2002-06-11 19:39:59 +00:00
in_pcb.h whitespace 2002-06-09 16:33:36 +00:00
in_proto.c whitespace 2002-06-09 16:33:36 +00:00
in_systm.h
…
in_var.h Eliminate commons. 2002-05-12 20:33:50 +00:00
ip.h bring in latest ALTQ from kjc. ALTQify some of the drivers. 2002-03-05 04:12:57 +00:00
ip6.h IP6_EXTHDR_GET0 had no check against m->m_len (noone was using this macro). 2001-07-05 23:41:07 +00:00
ip_auth.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_auth.h Re-sync with IPFilter 2002-01-24 08:23:40 +00:00
ip_compat.h Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_ecn.c correct variable initialization. reported by fujitsu folks 2002-04-10 09:18:57 +00:00
ip_ecn.h whitespace. protect from multiple inclusion. sync with kame 2001-12-21 04:11:24 +00:00
ip_encap.c remove packed attribute as it will cause data be unaligned 2002-07-31 03:18:04 +00:00
ip_encap.h use radix table for inbound tunnel lookup (would increase performance 2001-12-21 06:30:43 +00:00
ip_fil.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_fil.h Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_flow.c Changes to allow the IPv4 and IPv6 layers to align headers themseves, 2002-06-30 22:40:32 +00:00
ip_frag.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_frag.h Upgraded IPFilter to 3.4.29 2002-09-19 08:08:14 +00:00
ip_ftp_pxy.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_gre.c KNF - return is not a function. sync w/kame. 2002-09-11 02:46:42 +00:00
ip_gre.h whitespace 2002-06-09 16:33:36 +00:00
ip_h323_pxy.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_icmp.c Remove breaks after returns, unreachable returns and returns after 2002-09-23 05:51:10 +00:00
ip_icmp.h whitespace 2002-06-09 16:33:36 +00:00
ip_input.c revert mtudisc_timeout value to the old one if update falis 2002-09-23 13:43:27 +00:00
ip_ipsec_pxy.c add __KERNEL_RCSID() 2002-04-01 16:47:46 +00:00
ip_log.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_mroute.c avoid swapping endian of ip_len and ip_off on mbuf, to meet with M_LEADINGSPACE 2002-08-14 00:23:27 +00:00
ip_mroute.h whitespace 2002-06-09 16:33:36 +00:00
ip_nat.c Relax overly-conservative TCP option parsing used by ipnat when 2002-09-24 14:14:25 +00:00
ip_nat.h Upgraded IPFilter to 3.4.29 2002-09-19 08:08:14 +00:00
ip_netbios_pxy.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_output.c From FreeBSD (1.164) courtesy of Maxim Konovalov: 2002-09-17 13:10:59 +00:00
ip_proxy.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_proxy.h Upgraded IPFilter to 3.4.29 2002-09-19 08:08:14 +00:00
ip_raudio_pxy.c Upgraded IPFilter to 3.4.23 2002-01-24 08:21:30 +00:00
ip_rcmd_pxy.c Re-sync with IPFilter 2002-01-24 08:23:40 +00:00
ip_state.c Resync with official IPF 2002-09-19 08:12:43 +00:00
ip_state.h Upgraded IPFilter to 3.4.29 2002-09-19 08:08:14 +00:00
ip_var.h correct signedness mixup in pointer passing. sync w/kame 2002-09-11 02:41:19 +00:00
ipl.h Upgraded IPFilter to 3.4.29 2002-09-19 08:08:14 +00:00
raw_ip.c avoid swapping endian of ip_len and ip_off on mbuf, to meet with M_LEADINGSPACE 2002-08-14 00:23:27 +00:00
tcp.h Add TCP_MD5SIGNATURE option. 2001-05-26 21:40:55 +00:00
tcp_debug.c whitespace 2002-06-09 16:33:36 +00:00
tcp_debug.h do not #ifdef in headers. usr.sbin/trpt needs it. 2001-07-09 07:53:20 +00:00
tcp_fsm.h Make tcp_outflags & tcpstates const. 2001-10-20 03:19:41 +00:00
tcp_input.c correct signedness mixup in pointer passing. sync w/kame 2002-09-11 02:41:19 +00:00
tcp_output.c In the txsegsize bounding code, it is not necessary to adjust for the options 2002-09-13 18:26:55 +00:00
tcp_seq.h
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tcp_subr.c avoid swapping endian of ip_len and ip_off on mbuf, to meet with M_LEADINGSPACE 2002-08-14 00:23:27 +00:00
tcp_timer.c whitespace 2002-06-09 16:33:36 +00:00
tcp_timer.h Change a few variable/tables to const since they are read-only. 2001-11-04 13:42:27 +00:00
tcp_usrreq.c Rename sbappend_stream() to sbappendstream(), per suggestion from 2002-07-03 21:36:57 +00:00
tcp_var.h Changes to allow the IPv4 and IPv6 layers to align headers themseves, 2002-06-30 22:40:32 +00:00
tcpip.h
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udp.h
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udp_usrreq.c avoid swapping endian of ip_len and ip_off on mbuf, to meet with M_LEADINGSPACE 2002-08-14 00:23:27 +00:00
udp_var.h Changes to allow the IPv4 and IPv6 layers to align headers themseves, 2002-06-30 22:40:32 +00:00