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path: root/sys/netinet/ip_output.c
AgeCommit message (Collapse)Author
2013-08-08Change MTU discovery functions to not abuse the global icmpsrc variableMartin Pieuchot
to pass the destination address of the route to clone. ok markus@, mikeb@
2013-08-08Make use of IFP_TO_IA() instead of rolling our own copy, no functionalMartin Pieuchot
change. ok mikeb@, henning@
2013-07-31Move bridge_broadcast and subsequently all IPsec SPD lookup code outMike Belopuhov
of the IPL_NET. pf_test should be no longer called under IPL_NET as well. The problem became evident after the related issue was brought up by David Hill <dhill at mindcry ! org>. With input from and OK mpi. Tested by David and me.
2013-07-04format string fixes: size_t and uint16_tStefan Fritsch
ok bluhm@
2013-06-26put the cksum diff back, of course with the bug fixed where we couldHenning Brauer
under some circumstances repair broken checksums on the way. ok ryan naddy mikeb . redo most of the protocol (tcp/udp/...) checksum handling -assume we have hardware checksum offloading. stop mucking with the checksum in most of the stack -stop checksum mucking in pf, just set a "needs checksumming" flag if needed -in all output pathes, very late, if we figure out the outbound interface doesn't have hw cksum offloading, do the cksum in software. this especially makes the bridge path behave like a regular output path -little special casing for bridge still required until the broadcast path loses its disgusting shortcut hacks, but at least it's in one place now and not all over the stack in6_proto_cksum_out mostly written by krw@ started at k2k11 in iceland more than 1.5 years ago - yes it took that long, this stuff is everything but easy. this happens to fix the infamous pf rdr bug that made us turn off proto cksum offloading on almost all interface drivers.
2013-06-11Replace all ovbcopy with memmove; swap the src and dst arguments tooTheo de Raadt
ok otto
2013-06-05Calculate ICMP checksums with in4_cksum() which lets us get rid of theLawrence Teo
clunky m_data/m_len dance needed by in_cksum(). Tested on amd64, hppa, i386, loongson, macppc, sgi, and sparc64. Thanks to blambert@, bluhm@, and henning@ for help and feedback; abieber@ for testing this diff independently on macppc; krw@ for access to his hppa, sgi, and sparc64 test systems at t2k13; nick@ for helping me figure out Ken's hppa so that I can test this diff. :) ok blambert bluhm henning mikeb
2013-04-24ansify.Martin Pieuchot
ok mikeb@, haesbaert@ jajaja miod@
2013-04-11Remove the extern keyword from function declarations, documentMartin Pieuchot
sysctl declarations, move variables and functions used in only one place in their corresponding file. No functional change. No objection from markus@, ok mikeb@
2013-04-10Remove various external variable declaration from sources files andMartin Pieuchot
move them to the corresponding header with an appropriate comment if necessary. ok guenther@
2013-04-09Remove read-only ipsec variables and directly use defines instead.Martin Pieuchot
ok mikeb@, markus@
2012-11-06backout csum diff for the moment, requested by theoHenning Brauer
2012-11-05Make sure that in[6]_proto_cksum_out() is called unconditinally and notClaudio Jeker
inside the NPF block. Fixes checksum issues seen on ramdisk kernels. Initial diff by naddy@, tested and OK by many
2012-11-01redo most of the protocol (tcp/udp/...) checksum handlingHenning Brauer
-assume we have hardware checksum offloading. stop mucking with the checksum in most of the stack -stop checksum mucking in pf, just set a "needs checksumming" flag if needed -in all output pathes, very late, if we figure out the outbound interface doesn't have hw cksum offloading, do the cksum in software. this especially makes the bridge path behave like a regular output path -little special casing for bridge still required until the broadcast path loses its disgusting shortcut hacks, but at least it's in one place now and not all over the stack in6_proto_cksum_out mostly written by krw@ started at k2k11 in iceland more than 1.5 years ago - yes it took that long, this stuff is everything but easy. this happens to fix the infamous pf rdr bug that made us turn off proto cksum offloading on almost all interface drivers. ok camield sthen claudio, testing by many, thanks!
2012-10-05Point an interface directly to its bridgeport configuration, insteadCamiel Dobbelaar
of to the bridge itself. This is ok, since an interface can only be part of one bridge, and the parent bridge is easy to find from the bridgeport. This way we can get rid of a lot of list walks, improving performance and shortening the code. ok henning stsp sthen reyk
2012-09-20spltdb() was really just #define'd to be splsoftnet(); replace the formerBret Lambert
with the latter no change in md5 checksum of generated files ok claudio@ henning@
2012-07-16add IP_IPSECFLOWINFO option to sendmsg() and recvmsg(), so npppd(4)Markus Friedl
can use this to select the IPsec tunnel for sending L2TP packets. this fixes Windows (always binding to 1701) and Android clients (negotiating wildcard flows); feedback mpf@ and yasuoka@; ok henning@ and yasuoka@; ok jmc@ for the manpage
2012-04-13unneccessary casts to unsigned; ok claudioTheo de Raadt
2012-04-07Bring the rtable sockopt code in line with the setrtable() implementation.Claudio Jeker
While there change IP_RTABLE to SO_RTABLE. IP_RTABLE will die soon. With and OK guenther@
2012-03-30actually store the result of the pmtu-route lookup. otherwise weMarkus Friedl
don't have a MTU to announce in the icmp need fragment packet. this fixes PMTU-discovery for TCP over IPsec; ok mpf@, fries@
2012-03-17remove IP_JUMBO, SO_JUMBO, and RTF_JUMBO.David Gwynne
no objection from mcbride@ krw@ markus@ deraadt@
2011-12-29Escape hardware-checksumming if interface is in a bridge, this isChristiano F. Haesbaert
already done for UDP/TCP/ICMP. This fixes a problem where checksumming would not be computed if you have a bridge with at least one interface with hardware checksumming and another without. Discussed with sthen@ and henning@, this is somewhat a temporary fix, we should not have these special bridge cases in ip_output, as Henning said, the bridge must behave. But for that to work we need to poke the bridge harder, this problem has been seen by at least two users at: http://marc.info/?l=openbsd-misc&m=132391433319512&w=2 http://marc.info/?l=openbsd-misc&m=132234363030132&w=2 I promised to work on a better diff :-). ok henning@ sthen@ mikeb@
2011-12-02Kill unused IFCAP_IPSEC and IFCAP_IPCOMP.Christiano F. Haesbaert
ok claudio@ henning@ mikeb@
2011-07-04Bye bye pf_test6(). Only one pf_test function for both IPv4 and v6.Claudio Jeker
The functions were 95% identical anyway. While there use struct pf_addr in struct pf_divert instead of some union which is the same. OK bluhm@ mcbride@ and most probably henning@ as well
2011-06-15Add IP_RECVRTABLE socket option to be used with a IPPROTO_IPMike Belopuhov
level that allows one to retrieve the original routing domain of UDP datagrams diverted by the pf via "divert-to" with a recvmsg(2). ok claudio
2011-05-28Do not allow traffic to be sent with a destination address in 0/8;Paul de Weerd
this is not allowed according to Stevens and RFCs 5735 and 1122. Suggestion to use ENETUNREACH from claudio. OK phessler@, claudio@
2011-05-02recognize SO_RTABLE socket option at the SOL_SOCKET level;Mike Belopuhov
discussed with and ok claudio
2011-04-28Make in_broadcast() rdomain aware. Mostly mechanical change.Claudio Jeker
This fixes the problem of binding sockets to broadcast IPs in other rdomains. OK henning@
2011-04-05in_proto_csum_out: if M_ICMP_CSUM_OUT is set, do the icmp checksumHenning Brauer
ok dlg fondue-kinda-ok claudio
2011-04-05mechanic rename M_{TCP|UDP}V4_CSUM_OUT -> M_{TCP|UDP}_CSUM_OUTHenning Brauer
ok claudio krw
2011-04-04de-guttenberg our stack a bitHenning Brauer
we don't need 7 f***ing copies of the same code to do the protocol checksums (or not, depending on hw capabilities). claudio ok
2011-04-04there is no need to special case the bridge in the ip checksum handlingHenning Brauer
ok sthen claudio dlg
2010-09-30If a caller is requesting to be set to the same rtable that theyPeter Hessler
currently have, let the call succeede. Mirrors the same behaviour as setrtable() OK claudio@
2010-09-23add a new IP level socket option IP_PIPEX. This option is used for L2TPYASUOKA Masahiko
support by pipex. OK henning@, "Carry on" blambert@
2010-09-08Return EACCES when pf_test() blocks a packet in ip_output(). This allowsClaudio Jeker
ip_forward() to know the difference between blocked packets and those that can't be forwarded (EHOSTUNREACH). Only in the latter case an ICMP should be sent. In the other callers of ip_output() change the error back to EHOSTUNREACH since userland may not expect EACCES on a sendto(). OK henning@, markus@
2010-08-13when sending a fragmented packet, dont check if the interfaces send queueDavid Gwynne
has enough space for all the fragments on it. this check was snuck in by itojun under an unrelated commit. it broke when i set the virtual interface send queue depths to 1, which beck had to special case at n2k10. without this code we avoid these dubious checks along with another splnet/splx pair, and it should make future work on manipulating send queues easier. ive been running this in production since n2k10 (~7months ago). ok claudio@ henning@ deraadt@
2010-07-09Add support for using IPsec in multiple rdomains.Reyk Floeter
This allows to run isakmpd/iked/ipsecctl in multiple rdomains independently (with "route exec"); the kernel will pickup the rdomain from the process context of the pfkey socket and load the flows and SAs into the matching rdomain encap routing table. The network stack also needs to pass the rdomain to the ipsec stack to lookup the correct rdomain that belongs to an interface/mbuf/... You can now run individual IPsec configs per rdomain or create IPsec VPNs between multiple rdomains on the same machine ;). Note that a primary enc(4) in addition to enc0 interface is required per rdomain, eg. enc1 rdomain 1. Test by some people, mostly on existing "rdomain 0" setups. Was in snaps for some days and people didn't complain. ok claudio@ naddy@
2010-07-03Fix the naming of interfaces and variables for rdomains and rtablesPhilip Guenthe
and make it possible to bind sockets (including listening sockets!) to rtables and not just rdomains. This changes the name of the system calls, socket option, and ioctl. After building with this you should remove the files /usr/share/man/cat2/[gs]etrdomain.0. Since this removes the existing [gs]etrdomain() system calls, the libc major is bumped. Written by claudio@, criticized^Wcritiqued by me
2010-07-02m_copyback can fail to allocate memory, but is a void fucntion so gymnasticsBret Lambert
are required to detect that. Change the function to take a wait argument (used in nfs server, but M_NOWAIT everywhere else for now) and to return an error ok claudio@ henning@ krw@
2010-07-01Allow to specify an alternative enc(4) interface for an SA. AllReyk Floeter
traffic for this SA will appear on the specified enc interface instead of enc0 and can be filtered and monitored separately. This will allow to group individual ipsec policies to virtual interfaces and simplifies monitoring and pf filtering with many ipsec policies a lot. This diff includes the following changes: - Store the enc interface unit (default 0) in the TDB of an SA and pass it to the enc_getif() lookup when running the bpf or pf_test() handlers. - Add the pfkey SADB_X_EXT_TAP extension to communicate the encX interface unit for a specified SA between userland and kernel. - Update enc(4) again to use an allocate array instead of the TAILQ to lookup the matching enc interface in enc_getif() quickly. Discussed with many, tested by a few, will need more testing & review. ok deraadt@
2010-06-29Replace enc(4) with a new implementation as a cloner device. We stillReyk Floeter
create enc0 by default, but it is possible to add additional enc interfaces. This will be used later to allow alternative encs per policy or to have an enc per rdomain when IPsec becomes rdomain-aware. manpage bits ok jmc@ input from henning@ deraadt@ toby@ naddy@ ok henning@ claudio@
2010-05-07Start cleaning up the mess called rtalloc*. Kill rtalloc2, make rtalloc1Claudio Jeker
accept flags for report and nocloning. Move the rtableid into struct route (with a minor twist for now) and make a few more codepathes rdomain aware. Appart from the pf.c and route.c bits the diff is mostly mechanical. More to come... OK michele, henning
2010-01-13Double and in comment.Claudio Jeker
2010-01-12Allow the queueing of multiple fragments on virtual interfaces with aBob Beck
queue length of one - i.e. vlans with the forthcoming change from dlg. this allows fragmented frames to be sent on such an interface, hoping that the interface underneath copes correctly - A better fix for this will be forthcoming soon, but this is good enough for now, and will allow the change for vlans to use an ifq length of 1. tested by me and dlg@, ok dlg@, claudio@, deraadt@
2009-12-23The process's rdomain should be, well, per-process and not per-rthread,Philip Guenthe
so put it in struct process instead of struct proc. While at it, move the p_emul member inside struct proc so that it gets copied automatically instead of requiring manual assignment. ok deraadt@
2009-12-11Two cases of IPSEC getsockopt() returning two bytes of uninitialializedTheo de Raadt
kernel stack content instead of proper information; found by Clement LECIGNE
2009-11-27Add setrdomain() and getrdomain() system calls. Committing now toPhilip Guenthe
catch the libc major bump per request from deraadt@ Diff by reyk. ok guenther@
2009-11-20NULL dereference in IPV6_PORTRANGE and IP_IPSEC_*, found by Clement LECIGNE,Philip Guenthe
localhost DoS everywhere. To help minimize further issues, make the mbuf != NULL test explicit instead of implicit in a length test. Suggestions and initial work by mpf@ and miod@ ok henning@, mpf@, claudio@,
2009-11-13Packets generated by ip_fragment() need to inherit the rdomain from theClaudio Jeker
original packet or they will trigger the diagnostic check in the interface output routines. OK jsg@
2009-11-03rtables are stacked on rdomains (it is possible to have multiple routingClaudio Jeker
tables on top of a rdomain) but until now our code was a crazy mix so that it was impossible to correctly use rtables in that case. Additionally pf(4) only knows about rtables and not about rdomains. This is especially bad when tracking (possibly conflicting) states in various domains. This diff fixes all or most of these issues. It adds a lookup function to get the rdomain id based on a rtable id. Makes pf understand rdomains and allows pf to move packets between rdomains (it is similar to NAT). Because pf states now track the rdomain id as well it is necessary to modify the pfsync wire format. So old and new systems will not sync up. A lot of help by dlg@, tested by sthen@, jsg@ and probably more OK dlg@, mpf@, deraadt@
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