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* Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)Pawel Biernacki2020-02-261-1/+1
| | | | | | | | | | | | | | | | | | | 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: further adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-201-0/+2
| | | | | | | | | | | | | | | | | Mainly focus on files that use BSD 3-Clause license. 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. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point. Notes: svn path=/head/; revision=326023
* Renumber copyright clause 4Warner Losh2017-02-281-1/+1
| | | | | | | | | | | | Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96 Notes: svn path=/head/; revision=314436
* vnet.h needs to be included before raw_cb.h. Now it compiles due toGleb Smirnoff2013-10-251-1/+1
| | | | | | | pollution via if_var.h. Notes: svn path=/head/; revision=257135
* Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.Ed Schouten2011-11-071-1/+2
| | | | | | | | | 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
* Merge the remainder of kern_vimage.c and vimage.h into vnet.c andRobert Watson2009-08-011-1/+0
| | | | | | | | | | | | | vnet.h, we now use jails (rather than vimages) as the abstraction for virtualization management, and what remained was specific to virtual network stacks. Minor cleanups are done in the process, and comments updated to reflect these changes. Reviewed by: bz Approved by: re (vimage blanket) Notes: svn path=/head/; revision=196019
* Build on Jeff Roberson's linker-set based dynamic per-CPU allocatorRobert Watson2009-07-141-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (DPCPU), as suggested by Peter Wemm, and implement a new per-virtual network stack memory allocator. Modify vnet to use the allocator instead of monolithic global container structures (vinet, ...). This change solves many binary compatibility problems associated with VIMAGE, and restores ELF symbols for virtualized global variables. Each virtualized global variable exists as a "reference copy", and also once per virtual network stack. Virtualized global variables are tagged at compile-time, placing the in a special linker set, which is loaded into a contiguous region of kernel memory. Virtualized global variables in the base kernel are linked as normal, but those in modules are copied and relocated to a reserved portion of the kernel's vnet region with the help of a the kernel linker. Virtualized global variables exist in per-vnet memory set up when the network stack instance is created, and are initialized statically from the reference copy. Run-time access occurs via an accessor macro, which converts from the current vnet and requested symbol to a per-vnet address. When "options VIMAGE" is not compiled into the kernel, normal global ELF symbols will be used instead and indirection is avoided. This change restores static initialization for network stack global variables, restores support for non-global symbols and types, eliminates the need for many subsystem constructors, eliminates large per-subsystem structures that caused many binary compatibility issues both for monitoring applications (netstat) and kernel modules, removes the per-function INIT_VNET_*() macros throughout the stack, eliminates the need for vnet_symmap ksym(2) munging, and eliminates duplicate definitions of virtualized globals under VIMAGE_GLOBALS. Bump __FreeBSD_version and update UPDATING. Portions submitted by: bz Reviewed by: bz, zec Discussed with: gnn, jamie, jeff, jhb, julian, sam Suggested by: peter Approved by: re (kensmith) Notes: svn path=/head/; revision=195699
* After cleaning up rt_tables from vnet.h and cleaning up opt_route.hBjoern A. Zeeb2009-06-231-1/+0
| | | | | | | | a lot of files no longer need route.h either. Garbage collect them. While here remove now unneeded vnet.h #includes as well. Notes: svn path=/head/; revision=194739
* After r193232 rt_tables in vnet.h are no longer indirectly dependent onBjoern A. Zeeb2009-06-081-2/+0
| | | | | | | | | | | | the ROUTETABLES kernel option thus there is no need to include opt_route.h anymore in all consumers of vnet.h and no longer depend on it for module builds. Remove the hidden include in flowtable.h as well and leave the two explicit #includes in ip_input.c and ip_output.c. Notes: svn path=/head/; revision=193744
* For all files including net/vnet.h directly include opt_route.h andBjoern A. Zeeb2009-02-271-0/+3
| | | | | | | | | | | | | | | | | net/route.h. Remove the hidden include of opt_route.h and net/route.h from net/vnet.h. We need to make sure that both opt_route.h and net/route.h are included before net/vnet.h because of the way MRT figures out the number of FIBs from the kernel option. If we do not, we end up with the default number of 1 when including net/vnet.h and array sizes are wrong. This does not change the list of files which depend on opt_route.h but we can identify them now more easily. Notes: svn path=/head/; revision=189106
* Rather than using hidden includes (with cicular dependencies),Bjoern A. Zeeb2008-12-021-0/+1
| | | | | | | | | | | | | | directly include only the header files needed. This reduces the unneeded spamming of various headers into lots of files. For now, this leaves us with very few modules including vnet.h and thus needing to depend on opt_route.h. Reviewed by: brooks, gnn, des, zec, imp Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=185571
* Change the initialization methodology for global variables scheduledMarko Zec2008-11-191-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | for virtualization. Instead of initializing the affected global variables at instatiation, assign initial values to them in initializer functions. As a rule, initialization at instatiation for such variables should never be introduced again from now on. Furthermore, enclose all instantiations of such global variables in #ifdef VIMAGE_GLOBALS blocks. Essentialy, this change should have zero functional impact. In the next phase of merging network stack virtualization infrastructure from p4/vimage branch, the new initialization methology will allow us to switch between using global variables and their counterparts residing in virtualization containers with minimum code churn, and in the long run allow us to intialize multiple instances of such container structures. Discussed at: devsummit Strassburg Reviewed by: bz, julian Approved by: julian (mentor) Obtained from: //depot/projects/vimage-commit2/... X-MFC after: never Sponsored by: NLnet Foundation, The FreeBSD Foundation Notes: svn path=/head/; revision=185088
* Step 1.5 of importing the network stack virtualization infrastructureMarko Zec2008-10-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | from the vimage project, as per plan established at devsummit 08/08: http://wiki.freebsd.org/Image/Notes200808DevSummit Introduce INIT_VNET_*() initializer macros, VNET_FOREACH() iterator macros, and CURVNET_SET() context setting macros, all currently resolving to NOPs. Prepare for virtualization of selected SYSCTL objects by introducing a family of SYSCTL_V_*() macros, currently resolving to their global counterparts, i.e. SYSCTL_V_INT() == SYSCTL_INT(). Move selected #defines from sys/sys/vimage.h to newly introduced header files specific to virtualized subsystems (sys/net/vnet.h, sys/netinet/vinet.h etc.). All the changes are verified to have zero functional impact at this point in time by doing MD5 comparision between pre- and post-change object files(*). (*) netipsec/keysock.c did not validate depending on compile time options. Implemented by: julian, bz, brooks, zec Reviewed by: julian, bz, brooks, kris, rwatson, ... Approved by: julian (mentor) Obtained from: //depot/projects/vimage-commit2/... X-MFC after: never Sponsored by: NLnet Foundation, The FreeBSD Foundation Notes: svn path=/head/; revision=183550
* Commit step 1 of the vimage project, (network stack)Bjoern A. Zeeb2008-08-171-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | virtualization work done by Marko Zec (zec@). This is the first in a series of commits over the course of the next few weeks. Mark all uses of global variables to be virtualized with a V_ prefix. Use macros to map them back to their global names for now, so this is a NOP change only. We hope to have caught at least 85-90% of what is needed so we do not invalidate a lot of outstanding patches again. Obtained from: //depot/projects/vimage-commit2/... Reviewed by: brooks, des, ed, mav, julian, jamie, kris, rwatson, zec, ... (various people I forgot, different versions) md5 (with a bit of help) Sponsored by: NLnet Foundation, The FreeBSD Foundation X-MFC after: never V_Commit_Message_Reviewed_By: more people than the patch Notes: svn path=/head/; revision=181803
* Rather than checking for a NULL so_pcb in raw_attach(), assert thatRobert Watson2008-07-091-5/+6
| | | | | | | | | | | | it's non-NULL, as all callers can and should already do the required checking. Update comments a bit more to talk about rawcb allocation for consumers. Reviewed by: bz MFC after: 3 weeks Notes: svn path=/head/; revision=180391
* Add sysctl subtree net.raw for generic raw socket infrastructure;Robert Watson2008-07-091-2/+11
| | | | | | | | | | | expose default send and receive socket buffer sizes using sysctls so that they can be administered centrally. Reviewed by: bz MFC after: 3 weeks Notes: svn path=/head/; revision=180390
* Remove unused support for local and foreign addresses in generic rawRobert Watson2008-07-091-37/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | socket support. These utility routines are used only for routing and pfkey sockets, neither of which have a notion of address, so were required to mock up fake socket addresses to avoid connection requirements for applications that did not specify their own fake addresses (most of them). Quite a bit of the removed code is #ifdef notdef, since raw sockets don't support bind() or connect() in practice. Removing this simplifies the raw socket implementation, and removes two (commented out) uses of dtom(9). Fake addresses passed to sendto(2) by applications are ignored for compatibility reasons, but this is now done in a more consistent way (and with a comment). Possibly, EINVAL could be returned here in the future if it is determined that no applications depend on the semantic inconsistency of specifying a destination address for a protocol without address support, but this will require some amount of careful surveying. NB: This does not affect netinet, netinet6, or other wire protocol raw sockets, which provide their own independent infrastructure with control block address support specific to the protocol. MFC after: 3 weeks Reviewed by: bz Notes: svn path=/head/; revision=180385
* Improve approximation of style(9) in raw socket code.Robert Watson2008-07-051-17/+11
| | | | Notes: svn path=/head/; revision=180305
* Replaced the misleading uses of a historical artefact M_TRYWAIT with M_WAIT.Ruslan Ermilov2008-03-251-1/+1
| | | | | | | | | | | | | Removed dead code that assumed that M_TRYWAIT can return NULL; it's not true since the advent of MBUMA. Reviewed by: arch There are ongoing disputes as to whether we want to switch to directly using UMA flags M_WAITOK/M_NOWAIT for mbuf(9) allocation. Notes: svn path=/head/; revision=177599
* raw_disconnect() now disconnects but does not detach the raw pcb. As aRobert Watson2006-06-021-3/+1
| | | | | | | | | | | | | result, raw_uabort() now needs to call raw_detach() directly. As raw_uabort() is never called, and raw_disconnect() is probably not ever actually called in practice, this is likely not a functional change, but improves congruence between protocols, and avoids a NULL raw cb pointer after disconnect, which could result in a panic. MFC after: 1 month Notes: svn path=/head/; revision=159164
* Chance protocol switch method pru_detach() so that it returns voidRobert Watson2006-04-011-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | rather than an error. Detaches do not "fail", they other occur or the protocol flags SS_PROTOREF to take ownership of the socket. soclose() no longer looks at so_pcb to see if it's NULL, relying entirely on the protocol to decide whether it's time to free the socket or not using SS_PROTOREF. so_pcb is now entirely owned and managed by the protocol code. Likewise, no longer test so_pcb in other socket functions, such as soreceive(), which have no business digging into protocol internals. Protocol detach routines no longer try to free the socket on detach, this is performed in the socket code if the protocol permits it. In rts_detach(), no longer test for rp != NULL in detach, and likewise in other protocols that don't permit a NULL so_pcb, reduce the incidence of testing for it during detach. netinet and netinet6 are not fully updated to this change, which will be in an upcoming commit. In their current state they may leak memory or panic. MFC after: 3 months Notes: svn path=/head/; revision=157370
* Acquire the raw_cb mutex around LIST_REMOVE() of a raw socket controlRobert Watson2005-01-241-0/+2
| | | | | | | | | | block from the global raw socket list. Submitted by: Roselyn Lee <rosel at verniernetworks dot com> MFC after: 1 week Notes: svn path=/head/; revision=140775
* /* -> /*- for license, minor formatting changesWarner Losh2005-01-071-1/+1
| | | | Notes: svn path=/head/; revision=139823
* Push acquisition of the accept mutex out of sofree() into the callerRobert Watson2004-10-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (sorele()/sotryfree()): - This permits the caller to acquire the accept mutex before the socket mutex, avoiding sofree() having to drop the socket mutex and re-order, which could lead to races permitting more than one thread to enter sofree() after a socket is ready to be free'd. - This also covers clearing of the so_pcb weak socket reference from the protocol to the socket, preventing races in clearing and evaluation of the reference such that sofree() might be called more than once on the same socket. This appears to close a race I was able to easily trigger by repeatedly opening and resetting TCP connections to a host, in which the tcp_close() code called as a result of the RST raced with the close() of the accepted socket in the user process resulting in simultaneous attempts to de-allocate the same socket. The new locking increases the overhead for operations that may potentially free the socket, so we will want to revise the synchronization strategy here as we normalize the reference counting model for sockets. The use of the accept mutex in freeing of sockets that are not listen sockets is primarily motivated by the potential need to remove the socket from the incomplete connection queue on its parent (listen) socket, so cleaning up the reference model here may allow us to substantially weaken the synchronization requirements. RELENG_5_3 candidate. MFC after: 3 days Reviewed by: dwhite Discussed with: gnn, dwhite, green Reported by: Marc UBM Bocklet <ubm at u-boot-man dot de> Reported by: Vlad <marchenko at gmail dot com> Notes: svn path=/head/; revision=136682
* Lock down rawcb_list, a global list of control blocks for raw sockets,Robert Watson2004-06-151-0/+3
| | | | | | | | | | | | | | using rawcb_mtx. Hold this mutex while modifying or iterating over the control list; this means that the mutex is held over calls into socket delivery code, which no longer causes a lock order reversal as the routing socket code uses a netisr to avoid recursing socket -> routing -> socket. Note: Locking of IPsec consumers of rawcb_list is not included in this commit. Notes: svn path=/head/; revision=130514
* Extend coverage of SOCK_LOCK(so) to include so_count, the socketRobert Watson2004-06-121-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | reference count: - Assert SOCK_LOCK(so) macros that directly manipulate so_count: soref(), sorele(). - Assert SOCK_LOCK(so) in macros/functions that rely on the state of so_count: sofree(), sotryfree(). - Acquire SOCK_LOCK(so) before calling these functions or macros in various contexts in the stack, both at the socket and protocol layers. - In some cases, perform soisdisconnected() before sotryfree(), as this could result in frobbing of a non-present socket if sotryfree() actually frees the socket. - Note that sofree()/sotryfree() will release the socket lock even if they don't free the socket. Submitted by: sam Sponsored by: FreeBSD Foundation Obtained from: BSD/OS Notes: svn path=/head/; revision=130387
* Constify raw_sendspace and raw_recvspace, as they're not mutable.Robert Watson2004-06-111-2/+2
| | | | Notes: svn path=/head/; revision=130336
* Remove advertising clause from University of California Regent'sWarner Losh2004-04-071-4/+0
| | | | | | | | | | license, per letter dated July 22, 1999 and email from Peter Wemm, Alan Cox and Robert Watson. Approved by: core, peter, alc, rwatson Notes: svn path=/head/; revision=128019
* Back out M_* changes, per decision of the TRB.Warner Losh2003-02-191-1/+1
| | | | | | | Approved by: trb Notes: svn path=/head/; revision=111119
* Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.Alfred Perlstein2003-01-211-1/+1
| | | | | | | Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT. Notes: svn path=/head/; revision=109623
* o Untangle the confusion with the malloc flags {M_WAITOK, M_NOWAIT} andBosko Milekic2002-12-191-1/+1
| | | | | | | | | | | | | the mbuf allocator flags {M_TRYWAIT, M_DONTWAIT}. o Fix a bpf_compat issue where malloc() was defined to just call bpf_alloc() and pass the 'canwait' flag(s) along. It's been changed to call bpf_alloc() but pass the corresponding M_TRYWAIT or M_DONTWAIT flag (and only one of those two). Submitted by: Hiten Pandya <hiten@unixdaemons.com> (hiten->commit_count++) Notes: svn path=/head/; revision=108107
* Back out some style changes. They are not urgent,Luigi Rizzo2002-11-201-5/+11
| | | | | | | | | | I will put them back in after 5.0 is out. Requested by: sam Approved by: re Notes: svn path=/head/; revision=107113
* Fix function headers, remove 'register' from variable declarations.Luigi Rizzo2002-11-171-11/+5
| | | | Notes: svn path=/head/; revision=107023
* Back out my lats commit of locking down a socket, it conflicts with hsu's work.Seigo Tanimura2002-05-311-8/+1
| | | | | | | Requested by: hsu Notes: svn path=/head/; revision=97658
* Include <sys.systm.h> for the declaration of some atomic functions -- don'tBruce Evans2002-05-221-0/+1
| | | | | | | depend on namespace pollution in <sys/mutex.h>. Notes: svn path=/head/; revision=97093
* Lock down a socket, milestone 1.Seigo Tanimura2002-05-201-3/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Give struct socket structures a ref counting interface similar toMatthew Dillon2001-11-171-1/+1
| | | | | | | | | | vnodes. This will hopefully serve as a base from which we can expand the MP code. We currently do not attempt to obtain any mutex or SX locks, but the door is open to add them when we nail down exactly how that part of it is going to work. Notes: svn path=/head/; revision=86487
* $Id$ -> $FreeBSD$Peter Wemm1999-08-281-1/+1
| | | | Notes: svn path=/head/; revision=50477
* Added a used include (in ifdefed code).Bruce Evans1998-06-071-1/+3
| | | | Notes: svn path=/head/; revision=36726
* Removed unused #includes.Bruce Evans1997-10-281-8/+1
| | | | Notes: svn path=/head/; revision=30813
* Added used #include - don't depend on <sys/mbuf.h> includingBruce Evans1997-09-021-1/+2
| | | | | | | <sys/malloc.h> (unless we only use the bogusly shared M*WAIT flags). Notes: svn path=/head/; revision=29024
* The long-awaited mega-massive-network-code- cleanup. Part I.Garrett Wollman1997-04-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | This commit includes the following changes: 1) Old-style (pr_usrreq()) protocols are no longer supported, the compatibility glue for them is deleted, and the kernel will panic on boot if any are compiled in. 2) Certain protocol entry points are modified to take a process structure, so they they can easily tell whether or not it is possible to sleep, and also to access credentials. 3) SS_PRIV is no more, and with it goes the SO_PRIVSTATE setsockopt() call. Protocols should use the process pointer they are now passed. 4) The PF_LOCAL and PF_ROUTE families have been updated to use the new style, as has the `raw' skeleton family. 5) PF_LOCAL sockets now obey the process's umask when creating a socket in the filesystem. As a result, LINT is now broken. I'm hoping that some enterprising hacker with a bit more time will either make the broken bits work (should be easy for netipx) or dike them out. Notes: svn path=/head/; revision=25201
* Use LIST macros instead of insque/remquePoul-Henning Kamp1997-04-141-4/+5
| | | | Notes: svn path=/head/; revision=24936
* Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are notPeter Wemm1997-02-221-1/+1
| | | | | | | ready for it yet. Notes: svn path=/head/; revision=22975
* Make the long-awaited change from $Id$ to $FreeBSD$Jordan K. Hubbard1997-01-141-1/+1
| | | | | | | | | | | This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise. Notes: svn path=/head/; revision=21673
* Move or add #include <queue.h> in preparation for upcoming struct socketDavid Greenman1996-03-111-2/+2
| | | | | | | changes. Notes: svn path=/head/; revision=14546
* Another mega commit to staticize things.Poul-Henning Kamp1995-12-141-3/+3
| | | | Notes: svn path=/head/; revision=12820
* Moved inline functions for insque() and remque() to <sys/queue.h>.Bruce Evans1995-12-031-1/+2
| | | | | | | | | | Protected them with `#ifdef KERNEL' so that <sys/queue.h> is valid C++. Added the necessary #includes of <sys/queue.h>. These functions are bogus and should be replaced by the queue macros. Notes: svn path=/head/; revision=12592
* Eliminate sloppy common-style declarations. There should be none left forBruce Evans1995-07-291-1/+2
| | | | | | | the LINT configuation. Notes: svn path=/head/; revision=9759
* Remove trailing whitespace.Rodney W. Grimes1995-05-301-2/+2
| | | | Notes: svn path=/head/; revision=8876
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