Commit Graph

228 Commits

Author SHA1 Message Date
tuexen
63528763eb Provide consistent error causes whenever an ABORT chunk is sent.
MFC after:	1 week
2015-07-27 22:35:54 +00:00
tuexen
2af840e2ac Add FIB support for SCTP.
This fixes https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=200379

MFC after: 3 days
2015-06-17 15:20:14 +00:00
tuexen
2ff25b445e Retire SCTP_DONT_DO_PRIVADDR_SCOPE which was never defined.
MFC after: 3 days
2015-05-28 18:52:32 +00:00
tuexen
a82f33e60c Fix and cleanup the debug information. This has no user-visible changes.
Thanks to Irene Ruengeler for proving a patch.

MFC after: 3 days
2015-05-28 16:00:23 +00:00
tuexen
5d17873a8e Fix two bugs which resulted in a screwed up end point list:
* Use a save way to walk throught a list while manipulting it.
* Have to appropiate locks in place.
Joint work with rrs@

MFC after: 3 days
2015-03-24 21:12:45 +00:00
tuexen
484c3b2b61 Add a SCTP socket option to limit the cwnd for each path.
MFC after: 1 month
2015-03-10 19:49:25 +00:00
tuexen
cdb24d0c72 Remove dead code.
Reported by:	Coverity
CID:		748665
MFC after:	1 week
2015-01-11 21:55:30 +00:00
tuexen
78bec32537 Remove dead code.
Reported by:	Coverity
CID:		748666
MFC after:	1 week
2015-01-11 21:44:56 +00:00
tuexen
0750a00789 Add a missing break.
Reported by:	Coverity
CID:		1232014
MFC after: 	3 days
2014-12-17 20:34:38 +00:00
tuexen
48d05792ee This is the SCTP specific companion of
https://svnweb.freebsd.org/changeset/base/275358
which was provided by Hans Petter Selasky.
2014-12-04 21:17:50 +00:00
tuexen
6607aca965 Do the renaming of sb_cc to sb_ccc in a way with less code changes by
using a macro.
This is an alternate approach to
https://svnweb.freebsd.org/changeset/base/275326
which is easier to handle upstream.

Discussed with: rrs, glebius
2014-12-02 20:29:29 +00:00
glebius
25da94eb3e Merge from projects/sendfile:
o Introduce a notion of "not ready" mbufs in socket buffers.  These
mbufs are now being populated by some I/O in background and are
referenced outside.  This forces following implications:
- An mbuf which is "not ready" can't be taken out of the buffer.
- An mbuf that is behind a "not ready" in the queue neither.
- If sockbet buffer is flushed, then "not ready" mbufs shouln't be
  freed.

o In struct sockbuf the sb_cc field is split into sb_ccc and sb_acc.
  The sb_ccc stands for ""claimed character count", or "committed
  character count".  And the sb_acc is "available character count".
  Consumers of socket buffer API shouldn't already access them directly,
  but use sbused() and sbavail() respectively.
o Not ready mbufs are marked with M_NOTREADY, and ready but blocked ones
  with M_BLOCKED.
o New field sb_fnrdy points to the first not ready mbuf, to avoid linear
  search.
o New function sbready() is provided to activate certain amount of mbufs
  in a socket buffer.

A special note on SCTP:
  SCTP has its own sockbufs.  Unfortunately, FreeBSD stack doesn't yet
allow protocol specific sockbufs.  Thus, SCTP does some hacks to make
itself compatible with FreeBSD: it manages sockbufs on its own, but keeps
sb_cc updated to inform the stack of amount of data in them.  The new
notion of "not ready" data isn't supported by SCTP.  Instead, only a
mechanical substitute is done: s/sb_cc/sb_ccc/.
  A proper solution would be to take away struct sockbuf from struct
socket and allow protocols to implement their own socket buffers, like
SCTP already does.  This was discussed with rrs@.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2014-11-30 12:52:33 +00:00
tuexen
47bba753f6 Use a consistent type for the number of HMAC algorithms.
This fixes a bug which resulted in a warning on the userland
stack, when compiled on Windows.
Thanks to Peter Kasting from Google for reporting the issue and
provinding a potential fix.

MFC after: 3 days
2014-09-16 14:20:33 +00:00
tuexen
53f889f7e3 Address warnings generated by the clang analyzer.
MFC after: 1 week
2014-09-07 18:05:37 +00:00
tuexen
a20e3eb506 Use union sctp_sockstore instead of struct sockaddr_storage. This
eliminiates some warnings when building in userland.
Thanks to Patrick Laimbock for reporting this issue.
Remove also some unnecessary casts.
There should be no functional change.

MFC after: 1 week
2014-09-07 09:06:26 +00:00
tuexen
65ac57de62 Fix a leak of an address, if the address is scheduled for removal
and the stack is torn down.
Thanks to Peter Bostroem and Jiayang Liu from Google for reporting the
issue.

MFC after: 1 week
2014-09-06 20:03:24 +00:00
tuexen
e167d96026 Change SCTP sysctl from auth_disable to auth_enable. This is
consistent with other similar sysctl variable used in SCTP.
2014-08-12 13:13:11 +00:00
tuexen
b57b7cb252 Add support for the SCTP_AUTH_SUPPORTED and SCTP_ASCONF_SUPPORTED
socket options. Add also a sysctl to control the support of ASCONF.

MFC after: 1 week
2014-08-12 11:30:16 +00:00
tuexen
e7d5338a8e Add support for the SCTP_RECONFIG_SUPPORTED and the corresponding
sysctl controlling the negotiation of the RE-CONFIG extension.

MFC after: 3 days
2014-08-04 20:07:35 +00:00
tuexen
ff18393ff0 Add support for the SCTP_PKTDROP_SUPPORTED socket option and
the corresponding sysctl variable.
The default is off, since the specification is not an RFC yet.

MFC after: 1 week
2014-08-03 18:12:55 +00:00
tuexen
fb7bbef5e1 Add SCTP socket option SCTP_NRSACK_SUPPORTED to control the
NRSACK extension. The default will still be off, since it
it not an RFC (yet).
Changing the sysctl name will be in a separate commit.

MFC after: 1 week
2014-08-03 14:10:10 +00:00
tuexen
31e0173d95 Add support for the SCTP_PR_SUPPORTED socket option as specified in
http://tools.ietf.org/html/draft-ietf-tsvwg-sctp-prpolicies
Add also a sysctl controlling the default of the end-points.

MFC after: 1 week
2014-08-02 21:36:40 +00:00
tuexen
9ad96316d8 Cleanup the ECN configuration handling and provide an SCTP socket
option for controlling ECN on future associations and get the
status on current associations.
A simialar pattern will be used for controlling SCTP extensions in
upcoming commits.
2014-08-02 17:35:13 +00:00
tuexen
4a0d502636 Remove the asconf_auth_nochk sysctl. This was off by default and only
existed to be able to test with non-compliant peers a long time ago.
2014-08-01 20:49:27 +00:00
tuexen
d1d1e8d008 Bugfix: When a remote address was added to an endpoint,
a source address was selected and cached, but it was not
stored that is was cached. This resulted in selecting
different source addresses for the INIT-ACK and COOKIE-ACK
when possible.
Thanks to Niu Zhixiong for reporting the issue.

MFC after: 1 week
2014-07-11 17:31:40 +00:00
tuexen
635f385383 Integrate upstream changes.
MFC after: 1 week
2014-07-11 06:52:48 +00:00
tuexen
d9071b7221 Honor jails for unbound SCTP sockets when selecting source addresses,
reporting IP-addresses to the peer during the handshake, adding
addresses to the host, reporting the addresses via the sysctl
interface (used by netstat, for example) and reporting the
addresses to the application via socket options.
This issue was reported by Bernd Walter.

MFC after: 3 days
2014-06-20 13:26:49 +00:00
tuexen
ebf0ea80e4 Remove unused code. This is triggered by the bugreport of Sylvestre Ledru
which deal with useless code in the user land stack:
https://bugzilla.mozilla.org/show_bug.cgi?id=1003929

MFC after: 3 days
2014-05-06 16:51:07 +00:00
tuexen
a92bbbfa13 Handle an edge case of address management similar to TCP.
This needs to be reconsidered when the address handling
will be reimplemented.
The patch is from rrs@.

MFC after: 3 days
2014-03-29 21:26:45 +00:00
tuexen
529b98b943 * Provide information in error causes in ASCII instead of
proprietary binary format.
* Add support for a diagnostic information error cause.
  The code is sysctlable and the default is 0, which
  means it is not sent.

This is joint work with rrs@.

MFC after: 1 week
2014-03-16 12:32:16 +00:00
tuexen
38fb2a0d9d In
http://svnweb.freebsd.org/changeset/base/258221
I introduced a bug which initialized global locks
whenever the SCTP stack initialized. This was fixed in
http://svnweb.freebsd.org/changeset/base/258574
by rodrigc@. He just initialized the locks for
the default vnet. This fix reverts to the old
behaviour before r258221, which explicitly makes
sure it is only called once, because this works also on
other platforms.
MFC after: 3 days
X-MFC with: r258574.
2013-11-30 12:51:19 +00:00
rodrigc
919a38db63 Only initialize some mutexes for the default VNET.
In r208160, sctp_it_ctl was made a global variable, across all VNETs.
However, sctp_init() is called for every VNET that is created.  This results
in the same global mutexes which are part of sctp_it_ctl being initialized.  This can result
in crashes if many jails are created.

To reproduce the problem:
  (1)  Take a GENERIC kernel config, and add options for: VIMAGE, WITNESS,
       INVARIANTS.
  (2)  Run this command in a loop:
       jail -l -u root -c path=/ name=foo persist vnet && jexec foo ifconfig lo0 127.0.0.1/8 && jail -r foo

       (see http://lists.freebsd.org/pipermail/freebsd-current/2010-November/021280.html )

Witness will warn about the same mutex being initialized.

Fix the problem by only initializing these mutexes in the default VNET.
2013-11-25 18:49:37 +00:00
tuexen
63b4370996 When determining if an address belongs to an stcb, take the address family
into account for wildcard bound endpoints.

MFC after: 3 days
2013-11-16 15:34:14 +00:00
tuexen
e109131873 Cleanups which result in fixes which have been made upstream
and where partially suggested by Andrew Galante.
There is no functional change in FreeBSD.

MFC after: 3 days
2013-11-16 15:04:49 +00:00
tuexen
8fb2374dfa Unlock the lock before destroying it.
This issue was reported by Andrew Galante.

MFC after: 3 days
2013-11-03 14:00:17 +00:00
tuexen
d30ae7faf7 Changes from upstream to improve compilation when INET or INET6
or none of them is defined.

MFC after: 3 days
2013-11-02 20:12:19 +00:00
tuexen
59a2e2d463 Fix compilation if SCTP_DONT_DO_PRIVADDR_SCOPE is defined.
The issue was reported by Andrew Galante.

MFC after: 3 days
2013-10-28 20:32:37 +00:00
tuexen
9e48e2f73a Fix a bug were only 2048 streams where usable even though more than
2048 streams were negotiated on the wire. While there, remove the
hard coded limit of 2048 streams.

MFC after: 3 days
2013-07-05 10:08:49 +00:00
tuexen
baf8a88746 Code cleanups.
MFC after: 3 days
2013-07-03 18:48:43 +00:00
tuexen
6ea39edf93 Honor the net.inet6.ip6.v6only sysctl variable and the IPV6_V6ONLY
socket option for SCTP sockets in the same way as for UDP or TCP
sockets.

MFC after: 2 weeks
2013-05-10 18:09:38 +00:00
tuexen
3017e3b84b Send the adaptation layer indication only if set by the user.
MFC after: 3 days
Discussed with: rrs
2013-02-11 21:02:49 +00:00
tuexen
ccc66b91fb Don't send kernel provided information in the User Initiated
ABORT cause, since the user can also provide this kind of
information. So the receiver doesn't know who provided the
information.
While there: Fix a bug where the stack would send a malformed
ABORT chunk when using a send() call with SCTP_ABORT|SCT_SENDALL
flags.

MFC after: 3 days
2013-02-11 13:57:03 +00:00
tuexen
6e3d604447 Make sure that received packets for removed addresses are handled
consistently. While there, make variable names consistent.

MFC after: 3 days
2013-02-10 19:57:19 +00:00
tuexen
026c1e8b1a Cleanup the handling of address scopes. Announce in the INIT/INIT-ACK
only the supported address types. While there, do some whitespace
cleanups.

MFC after: 1 week
2013-02-09 17:26:14 +00:00
tuexen
6b769b5afe Fix a bug where HEARTBEATs were still sent in SHUTDOWN_SENT or
SHUTDOWN_ACK_SENT state. While there, make the corresponding
code consistent.

MFC after: 1 week
2013-02-09 08:27:08 +00:00
tuexen
9b6fdf83a8 Minor cleanups of debug messages.
MFC after: 3 days
2012-12-27 08:06:58 +00:00
glebius
8e20fa5ae9 Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags within sys.

Exceptions:

- sys/contrib not touched
- sys/mbuf.h edited manually
2012-12-05 08:04:20 +00:00
tuexen
926b939df3 Find the endpoint for an incoming packet also if the endpoint
comes from sctp_peeloff().

MFC after: 3 days
2012-11-26 16:43:32 +00:00
tuexen
17aa08aca9 Get the accounting working. We now have counters how many
chunks for each SCTP outgoing stream are in the send and
sent queue.
While there, improve the naming of NR-SACK related constants
recently introduced.

MFC after: 1 week
2012-11-16 19:39:10 +00:00
tuexen
2e86daf6ac Add per outgoing stream accounting for chunks in the send
and sent queue. This provides no functional change, but is
a preparation for an upcoming stream reset improvement.
Done with rrs@.

MFC after: 1 week
2012-11-07 22:11:38 +00:00