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freebsd-skq/sys/netinet6
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Bill Paul 6f8aee2268 Fix a bug which I discovered recently while doing IPv6 testing at 
Wind River. In the IPv4 output path, one of the tests in ip_output()
checks how many slots are actually available in the interface output
queue before attempting to send a packet. If, for example, we need
to transmit a packet of 32K bytes over an interface with an MTU of
1500, we know it's going to take about 21 fragments to do it. If
there's less than 21 slots left in the output queue, there's no point
in transmitting anything at all: IP does not do retransmission, so
sending only some of the fragments would just be a waste of bandwidth.
(In an extreme case, if you're sending a heavy stream of fragmented
packets, you might find yourself sending nothing by the first fragment
of all your packets.) So if ip_output() notices there's not enough
room in the output queue to send the frame, it just dumps the packet
and returns ENOBUFS to the app.

It turns out ip6_output() lacks this code. Consequently, this caused
the netperf UDPIPV6_STREAM test to produce very poor results with large
write sizes. This commit adds code to check the remaining space in the
output queue and junk fragmented packets if they're too big to be
sent, just like with IPv4. (I can't imagine anyone's running an NFS
server using UDP over IPv6, but if they are, this will likely make them
a lot happier. :)
2004-05-14 03:57:17 +00:00
..
ah6.h - correct signedness mixups. 2003-10-12 11:08:18 +00:00
ah_aesxcbcmac.c support AES XCBC MAC for AH. 2003-10-13 04:56:04 +00:00
ah_aesxcbcmac.h support AES XCBC MAC for AH. 2003-10-13 04:56:04 +00:00
ah_core.c Move the AH algorithm list from a static local function variable to 2004-03-10 04:56:54 +00:00
ah_input.c - m_cat() may free the mbuf on 2nd arg, so m_pkthdr manipulation has 2003-11-15 06:18:09 +00:00
ah_output.c - avoid hardcoded values. 2003-10-12 12:03:25 +00:00
ah.h oops, correct wrong change in previous commit. 2003-11-15 06:16:36 +00:00
dest6.c remove unused variable. 2003-10-12 15:14:33 +00:00
esp6.h
esp_aesctr.c - support AES counter mode for ESP. 2003-10-13 14:57:41 +00:00
esp_aesctr.h - support AES counter mode for ESP. 2003-10-13 14:57:41 +00:00
esp_core.c - m_cat() may free the mbuf on 2nd arg, so m_pkthdr manipulation has 2003-11-15 06:18:09 +00:00
esp_input.c - m_cat() may free the mbuf on 2nd arg, so m_pkthdr manipulation has 2003-11-15 06:18:09 +00:00
esp_output.c preparation for 64bit sequence number. 2003-11-15 05:41:41 +00:00
esp_rijndael.c cleanup rijndael API. 2003-11-11 18:58:54 +00:00
esp_rijndael.h enable aes-xcbc-mac and aes-ctr, again. 2003-11-10 10:39:14 +00:00
esp.h - support AES counter mode for ESP. 2003-10-13 14:57:41 +00:00
frag6.c add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
icmp6.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
icmp6.h
in6_cksum.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in6_gif.c add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
in6_gif.h - fix typo in comments. 2003-10-08 18:26:08 +00:00
in6_ifattach.c Tweak existing header and other build infrastructure to be able to build 2004-02-26 03:53:54 +00:00
in6_ifattach.h nuku unused functions in6_nigroup_attach() and 2003-10-31 15:51:28 +00:00
in6_pcb.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in6_pcb.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in6_prefix.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in6_prefix.h
in6_proto.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in6_rmx.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
in6_src.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in6_var.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in6.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
in6.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ip6_ecn.h add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
ip6_forward.c - call ip6_output() instead of nd6_output() when ipsec tunnel 2004-02-19 14:57:22 +00:00
ip6_fw.c When calculating the sequence number to use in an ip6fw reset, remember to 2003-12-25 23:39:44 +00:00
ip6_fw.h Replace the if_name and if_unit members of struct ifnet with new members 2003-10-31 18:32:15 +00:00
ip6_id.c add randomtab for ip6_randomflowlabel(). 2003-10-01 21:45:57 +00:00
ip6_input.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ip6_mroute.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ip6_mroute.h
ip6_output.c Fix a bug which I discovered recently while doing IPv6 testing at 2004-05-14 03:57:17 +00:00
ip6_var.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ip6.h
ip6protosw.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
ipcomp6.h
ipcomp_core.c - fix typo in comments. 2003-10-08 18:26:08 +00:00
ipcomp_input.c - typo. found by markus@openbsd 2003-10-09 18:44:54 +00:00
ipcomp_output.c sync with the latest KAME (just a cosmetic change) 2003-04-28 08:21:57 +00:00
ipcomp.h
ipsec6.h nuke unused functions. 2004-02-16 17:02:44 +00:00
ipsec.c correct function name in comment. 2004-02-16 18:07:53 +00:00
ipsec.h nuke unused functions. 2004-02-16 17:02:44 +00:00
mld6_var.h rename MLD6_* to MLD_*. 2003-10-31 16:07:15 +00:00
mld6.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
nd6_nbr.c ifp has the same value as rt->rti_ifp so remove the dependency 2004-04-19 08:02:52 +00:00
nd6_rtr.c Replace Bcopy/Bzero with 'the real thing' as in the rest of the file. 2004-04-18 11:45:28 +00:00
nd6.c fix the change of interface in nd6_storelladdr for multicast 2004-04-26 20:31:46 +00:00
nd6.h use arc4random. 2003-10-31 16:06:05 +00:00
pim6_var.h
pim6.h
raw_ip6.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
raw_ip6.h
README
route6.c hide m_tag, again. 2003-10-29 12:49:12 +00:00
scope6_var.h - add dom_if{attach,detach} framework. 2003-10-17 15:46:31 +00:00
scope6.c protect sid_default and sid. 2003-10-22 15:13:36 +00:00
tcp6_var.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
udp6_output.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
udp6_usrreq.c Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00
udp6_var.h Remove advertising clause from University of California Regent's 2004-04-07 20:46:16 +00:00

README 

a note to committers about KAME tree
$FreeBSD$
KAME project


FreeBSD IPv6/IPsec tree is from KAMEproject (http://www.kame.net/).
To synchronize KAME tree and FreeBSD better today and in the future,
please understand the following:

- DO NOT MAKE COSTMETIC CHANGES.
  "Cosmetic changes" here includes tabify, untabify, removal of space at EOL,
  minor KNF items, and whatever adds more output lines on "diff freebsd kame".
  To make future synchronization easier. it is critical to preserve certain
  statements in the code.  Also, as KAME tree supports all 4 BSDs (Free, Open,
  Net, BSD/OS) in single shared tree, it is not always possible to backport
  FreeBSD changes into KAME tree.  So again, please do not make cosmetic
  changes.  Even if you think it a right thing, that will bite KAME guys badly
  during upgrade attempts, and prevent us from synchronizing two trees.
  (you don't usually make cosmetic changes against third-party code, do you?)

- REPORT CHANGES/BUGS TO KAME GUYS.
  It is not always possible for KAME guys to watch all the freebsd mailing
  list traffic, as the traffic is HUGE.  So if possible, please, inform
  kame guys of changes you made in IPv6/IPsec related portion.  Contact
  path would be snap-users@kame.net or KAME PR database on www.kame.net.
  (or to core@kame.net if it is necessary to make it confidential)

Thank you for your cooperation and have a happy IPv6 life!


Note: KAME-origin code is in the following locations.
The above notice applies to corresponding manpages too.
The list may not be complete.  If you see $KAME$ in the code, it is from
KAME distribution.  If you see some file that is IPv6/IPsec related, it is
highly possible that the file is from KAME distribution.

include/ifaddrs.h
lib/libc/net
lib/libc/net/getaddrinfo.c
lib/libc/net/getifaddrs.c
lib/libc/net/getnameinfo.c
lib/libc/net/ifname.c
lib/libc/net/ip6opt.c
lib/libc/net/map_v4v6.c
lib/libc/net/name6.c
lib/libftpio
lib/libipsec
sbin/ip6fw
sbin/ping6
sbin/rtsol
share/doc/IPv6
share/man/man4/ip6.4
share/man/man4/inet6.4
sys/crypto (except sys/crypto/rc4)
sys/kern/uipc_mbuf2.c
sys/net/if_faith.[ch]
sys/net/if_gif.[ch]
sys/net/if_stf.[ch]
sys/net/pfkeyv2.h
sys/netinet/icmp6.h
sys/netinet/in_gif.[ch]
sys/netinet/ip6.h
sys/netinet/ip_encap.[ch]
sys/netinet6
sys/netkey
usr.sbin/faithd
usr.sbin/gifconfig
usr.sbin/ifmcstat
usr.sbin/mld6query
usr.sbin/ndp
usr.sbin/pim6dd
usr.sbin/pim6sd
usr.sbin/prefix
usr.sbin/rip6query
usr.sbin/route6d
usr.sbin/rrenumd
usr.sbin/rtadvd
usr.sbin/rtsold
usr.sbin/scope6config
usr.sbin/setkey
usr.sbin/traceroute6