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* sys: Remove $FreeBSD$: one-line .c patternWarner Losh2023-08-161-2/+0
| | | | Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
* spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSDWarner Losh2023-05-121-1/+1
| | | | | | | | | The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
* net: clean up empty lines in .c and .h filesMateusz Guzik2020-09-011-1/+0
| | | | Notes: svn path=/head/; revision=365071
* Define a module version for accept filter modules.Mark Johnston2020-05-191-16/+3
| | | | | | | | | | | | | | | | | | | | | | Otherwise accept filters compiled into the kernel do not preempt preloaded accept filter modules. Then, the preloaded file registers its accept filter module before the kernel, and the kernel's attempt fails since duplicate accept filter list entries are not permitted. This causes the preloaded file's module to be released, since module_register_init() does a lookup by name, so the preloaded file is unloaded, and the accept filter's callback points to random memory since preload_delete_name() unmaps the file on x86 as of r336505. Add a new ACCEPT_FILTER_DEFINE macro which wraps the accept filter and module definitions, and ensures that a module version is defined. PR: 245870 Reported by: Thomas von Dein <freebsd@daemon.de> MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=361263
* Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)Pawel Biernacki2020-02-261-2/+3
| | | | | | | | | | | | | | | | | | | r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718 Notes: svn path=/head/; revision=358333
* sys: general adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-271-0/+2
| | | | | | | | | | | | | | | | | Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended. Notes: svn path=/head/; revision=326272
* In preparation of merging projects/sendfile, transform bare access toGleb Smirnoff2014-11-121-5/+6
| | | | | | | | | | | | | | | sb_cc member of struct sockbuf to a couple of inline functions: sbavail() and sbused() Right now they are equal, but once notion of "not ready socket buffer data", will be checked in, they are going to be different. Sponsored by: Netflix Sponsored by: Nginx, Inc. Notes: svn path=/head/; revision=274421
* Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.Ed Schouten2011-11-071-1/+1
| | | | | | | | | The SYSCTL_NODE macro defines a list that stores all child-elements of that node. If there's no SYSCTL_DECL macro anywhere else, there's no reason why it shouldn't be static. Notes: svn path=/head/; revision=227309
* Rework socket upcalls to close some races with setup/teardown of upcalls.John Baldwin2009-06-011-33/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Each socket upcall is now invoked with the appropriate socket buffer locked. It is not permissible to call soisconnected() with this lock held; however, so socket upcalls now return an integer value. The two possible values are SU_OK and SU_ISCONNECTED. If an upcall returns SU_ISCONNECTED, then the soisconnected() will be invoked on the socket after the socket buffer lock is dropped. - A new API is provided for setting and clearing socket upcalls. The API consists of soupcall_set() and soupcall_clear(). - To simplify locking, each socket buffer now has a separate upcall. - When a socket upcall returns SU_ISCONNECTED, the upcall is cleared from the receive socket buffer automatically. Note that a SO_SND upcall should never return SU_ISCONNECTED. - All this means that accept filters should now return SU_ISCONNECTED instead of calling soisconnected() directly. They also no longer need to explicitly clear the upcall on the new socket. - The HTTP accept filter still uses soupcall_set() to manage its internal state machine, but other accept filters no longer have any explicit knowlege of socket upcall internals aside from their return value. - The various RPC client upcalls currently drop the socket buffer lock while invoking soreceive() as a temporary band-aid. The plan for the future is to add a new flag to allow soreceive() to be called with the socket buffer locked. - The AIO callback for socket I/O is now also invoked with the socket buffer locked. Previously sowakeup() would drop the socket buffer lock only to call aio_swake() which immediately re-acquired the socket buffer lock for the duration of the function call. Discussed with: rwatson, rmacklem Notes: svn path=/head/; revision=193272
* Add FBSDID to all files in netinet so that people can moreMike Silbersack2007-10-071-2/+3
| | | | | | | | | easily include file version information in bug reports. Approved by: re (kensmith) Notes: svn path=/head/; revision=172467
* /* -> /*- for license, minor formatting changesWarner Losh2005-01-071-1/+1
| | | | Notes: svn path=/head/; revision=139823
* The socket field so_state is used to hold a variety of socket relatedRobert Watson2004-06-141-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | flags relating to several aspects of socket functionality. This change breaks out several bits relating to send and receive operation into a new per-socket buffer field, sb_state, in order to facilitate locking. This is required because, in order to provide more granular locking of sockets, different state fields have different locking properties. The following fields are moved to sb_state: SS_CANTRCVMORE (so_state) SS_CANTSENDMORE (so_state) SS_RCVATMARK (so_state) Rename respectively to: SBS_CANTRCVMORE (so_rcv.sb_state) SBS_CANTSENDMORE (so_snd.sb_state) SBS_RCVATMARK (so_rcv.sb_state) This facilitates locking by isolating fields to be located with other identically locked fields, and permits greater granularity in socket locking by avoiding storing fields with different locking semantics in the same short (avoiding locking conflicts). In the future, we may wish to coallesce sb_state and sb_flags; for the time being I leave them separate and there is no additional memory overhead due to the packing/alignment of shorts in the socket buffer structure. Notes: svn path=/head/; revision=130480
* add missing #include <sys/module.h>Poul-Henning Kamp2004-05-301-0/+1
| | | | Notes: svn path=/head/; revision=129880
* Remove so*_locked(), which were backed out by mistake.Seigo Tanimura2002-06-181-3/+3
| | | | Notes: svn path=/head/; revision=98385
* Back out my lats commit of locking down a socket, it conflicts with hsu's work.Seigo Tanimura2002-05-311-25/+6
| | | | | | | Requested by: hsu Notes: svn path=/head/; revision=97658
* Lock down a socket, milestone 1.Seigo Tanimura2002-05-201-6/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | o Add a mutex (sb_mtx) to struct sockbuf. This protects the data in a socket buffer. The mutex in the receive buffer also protects the data in struct socket. o Determine the lock strategy for each members in struct socket. o Lock down the following members: - so_count - so_options - so_linger - so_state o Remove *_locked() socket APIs. Make the following socket APIs touching the members above now require a locked socket: - sodisconnect() - soisconnected() - soisconnecting() - soisdisconnected() - soisdisconnecting() - sofree() - soref() - sorele() - sorwakeup() - sotryfree() - sowakeup() - sowwakeup() Reviewed by: alfred Notes: svn path=/head/; revision=96972
* Redo the sigio locking.Alfred Perlstein2002-05-011-8/+0
| | | | | | | | | | | | | | Turn the sigio sx into a mutex. Sigio lock is really only needed to protect interrupts from dereferencing the sigio pointer in an object when the sigio itself is being destroyed. In order to do this in the most unintrusive manner change pgsigio's sigio * argument into a **, that way we can lock internally to the function. Notes: svn path=/head/; revision=95883
* Fix some edge cases where bad string handling could occur.Alfred Perlstein2002-05-011-0/+4
| | | | | | | Submitted by: ps Notes: svn path=/head/; revision=95867
* cleanup:Alfred Perlstein2002-05-011-37/+46
| | | | | | | fix line wraps, add some comments, fix macro definitions, fix for(;;) loops. Notes: svn path=/head/; revision=95865
* Revert the change of #includes in sys/filedesc.h and sys/socketvar.h.Seigo Tanimura2002-04-301-1/+4
| | | | | | | | | | | | | Requested by: bde Since locking sigio_lock is usually followed by calling pgsigio(), move the declaration of sigio_lock and the definitions of SIGIO_*() to sys/signalvar.h. While I am here, sort include files alphabetically, where possible. Notes: svn path=/head/; revision=95759
* Add a global sx sigio_lock to protect the pointer to the sigio objectSeigo Tanimura2002-04-271-3/+9
| | | | | | | | | | | | | of a socket. This avoids lock order reversal caused by locking a process in pgsigio(). sowakeup() and the callers of it (sowwakeup, soisconnected, etc.) now require sigio_lock to be locked. Provide sowwakeup_locked(), soisconnected_locked(), and so on in case where we have to modify a socket and wake up a process atomically. Notes: svn path=/head/; revision=95552
* Fix incorrect logic wouldn't disconnect incomming connections that had beenAlfred Perlstein2001-01-031-1/+1
| | | | | | | | | disconnected because they were not full. Submitted by: David Filo Notes: svn path=/head/; revision=70643
* Remove unneeded #include <sys/proc.h> lines.Poul-Henning Kamp2000-10-291-1/+0
| | | | Notes: svn path=/head/; revision=67882
* Remove headers not needed.Alfred Perlstein2000-10-071-12/+0
| | | | | | | Pointed out by: phk Notes: svn path=/head/; revision=66798
* Accept filter maintainanceAlfred Perlstein2000-09-061-83/+259
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update copyrights. Introduce a new sysctl node: net.inet.accf Although acceptfilters need refcounting to be properly (safely) unloaded as a temporary hack allow them to be unloaded if the sysctl net.inet.accf.unloadable is set, this is really for developers who want to work on thier own filters. A near complete re-write of the accf_http filter: 1) Parse check if the request is HTTP/1.0 or HTTP/1.1 if not dump to the application. Because of the performance implications of this there is a sysctl 'net.inet.accf.http.parsehttpversion' that when set to non-zero parses the HTTP version. The default is to parse the version. 2) Check if a socket has filled and dump to the listener 3) optimize the way that mbuf boundries are handled using some voodoo 4) even though you'd expect accept filters to only be used on TCP connections that don't use m_nextpkt I've fixed the accept filter for socket connections that use this. This rewrite of accf_http should allow someone to use them and maintain full HTTP compliance as long as net.inet.accf.http.parsehttpversion is set. Notes: svn path=/head/; revision=65534
* return of the accept filter part IIAlfred Perlstein2000-06-201-0/+183
accept filters are now loadable as well as able to be compiled into the kernel. two accept filters are provided, one that returns sockets when data arrives the other when an http request is completed (doesn't work with 0.9 requests) Reviewed by: jmg Notes: svn path=/head/; revision=61837
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