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can be changed via sysctl's.
ok markus@
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ok henning claudio fgsch krw
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http://www.gont.com.ar/drafts/icmp-attacks-against-tcp.html
i.e. don't act on ICMP-need-frag immediately if adhoc checks on the
advertised mtu fail. the mtu update is delayed until a tcp retransmit
happens. initial patch by Fernando Gont, tested by many.
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http://www.gont.com.ar/drafts/icmp-attacks-against-tcp.html)
ok markus frantzen
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- limit pool to tcp_sackhole_limit entries (sysctl-able)
- stop sack option processing on pool_get errors
- use SEQ_MIN/SEQ_MAX
ok henning, hshoexer, deraadt
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while t_rtt was 1-based), update callers
2. define and use TCP_RTT_BASE_SHIFT instead of the hardcoded 2.
3. add missing shifts when t_srtt/t_rttvar are used.
4. update the comments: t_srtt uses 5 bits of fraction (not 3)
and t_rttvar uses 4 bits
5. remove obsolete/unused macros TCP_RTT_SCALE and TCP_RTTVAR_SCALE
6. make sure rttmin is not > TCPTV_REXMTMAX
parts from netbsd, ok mcbride, henning
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- Ignore ts_ecr if it is 0, or the resulting rtt is out of range.
(use tp->t_rtttime instead)
- Initialise tcp_now to 1, to avoid the 500ms window where a valid ts_ecr
of 0 could be ignored.
- Convert out-of-range rtt values to valid ones in tcp_xmit_timer().
ok frantzen@ markus@
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1) add a reaper for TCP and SYN cache states (cf. netbsd pr 20390)
2) additional check for TCP_TIMER_ISARMED(TCPT_REXMT) in tcp_timer_persist()
with mickey@; ok deraadt@
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ok markus@ frantzen@
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things such that code that only need a second-resolution uptime or wall
time, and used to get that from time.tv_secs or mono_time.tv_secs now get
this from separate time_t globals time_second and time_uptime.
ok art@ niklas@ nordin@
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This moves md5.c out of libkern and into sys/crypto where it belongs (as
requested by markus@). Note that md5.c is still mandatory (dev/rnd.c uses it).
Verified with IPsec + hmac-md5 and tcp md5sig. OK henning@ and hshoexer@
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table from these metrics. struct rt_msghdr used by the routing socket is not
affected and so most userland apps don't need to be changed.
some man page polishing by jmc@
OK henning@ markus@ theo@
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interface MTU.
- break a tcp_output() -> tcp_mtudisc() -> tcp_output() infinite recursion
when the TCP mss ends up larger than the interface MTU (when the if_mtu is
smaller than the tcp header). connections will still stall
feedback from itojun@, claudio@ and provos and testing from beck@
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http://www.kohala.com/start/borman.97jun06.txt; ok deraadt@, henning@
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with either in(6)_pcbhashlookup() or in(6)_pcblookup_listen();
in_pcblookup is now only used by bind(2); speeds up pcb lookup for
listening sockets; from Claudio Jeker
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cleanup IPv6 flowlabel handling. deraadt ok
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(please test, especially PF portion)
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rescinded 22 July 1999. Proofed by myself and Theo.
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NULL to full 64 bits on a 64 bit address system. Soultion is to add a
(void *) cast before NULL. This makes a 64 bit MIPS kernel work and will
probably help future 64 bit ports as well.
OK from art@
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it consists of
- ECN support in TCP
- tunnel-egress and fragment reassembly rules in layer-3 not to lose
congestion info at tunnel-egress and fragment reassembly
to enable ECN in TCP, build a kernel with TCP_ECN, and then,
turn it on by "sysctl -w net.inet.tcp.ecn=1".
ok deraadt@
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tcp connections during tcp_slowtimo. apdapted from thorpej@netbsd.org
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from netbsd; also fix a bug where setting TF_ACKNOW didn't actually
result in an ack.
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adapated from netbsd. okay angelos@
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well (not at all) with shortages of the vm_map where the pages are mapped
(usually kmem_map).
Try to deal with it:
- group all information the backend allocator for a pool in a separate
struct. The pool will only have a pointer to that struct.
- change the pool_init API to reflect that.
- link all pools allocating from the same allocator on a linked list.
- Since an allocator is responsible to wait for physical memory it will
only fail (waitok) when it runs out of its backing vm_map, carefully
drain pools using the same allocator so that va space is freed.
(see comments in code for caveats and details).
- change pool_reclaim to return if it actually succeeded to free some
memory, use that information to make draining easier and more efficient.
- get rid of PR_URGENT, noone uses it.
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(older code had "th_sum = 0" at the bottom of the function, which was
removed during TCP hardware checksumming change)
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Fixes problem with bad checksums on keepalives
OK provos@
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if it exists). Cuts down on code a bit, and we don't need to look at
the routing entry at TCP. Based on NetBSD. UDP case to follow.
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