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* Remove netatm from HEAD as it is not MPSAFE and relies on the now removedRobert Watson2008-05-251-1312/+0
| | | | | | | | | | | | | | | | | | | | | | NET_NEEDS_GIANT. netatm has been disconnected from the build for ten months in HEAD/RELENG_7. Specifics: - netatm include files - netatm command line management tools - libatm - ATM parts in rescue and sysinstall - sample configuration files and documents - kernel support as a module or in NOTES - netgraph wrapper nodes for netatm - ctags data for netatm. - netatm-specific device drivers. MFC after: 3 weeks Reviewed by: bz Discussed with: bms, bz, harti Notes: svn path=/head/; revision=179308
* Chance protocol switch method pru_detach() so that it returns voidRobert Watson2006-04-011-15/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Push the assignment of a new or updated so_qlimit from solisten()Robert Watson2005-10-301-2/+4
| | | | | | | | | | | | | | | | | following the protocol pru_listen() call to solisten_proto(), so that it occurs under the socket lock acquisition that also sets SO_ACCEPTCONN. This requires passing the new backlog parameter to the protocol, which also allows the protocol to be aware of changes in queue limit should it wish to do something about the new queue limit. This continues a move towards the socket layer acting as a library for the protocol. Bump __FreeBSD_version due to a change in the in-kernel protocol interface. This change has been tested with IPv4 and UNIX domain sockets, but not other protocols. Notes: svn path=/head/; revision=151888
* Stop embedding struct ifnet at the top of driver softcs. Instead theBrooks Davis2005-06-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam Notes: svn path=/head/; revision=147256
* In the current world order, solisten() implements the state transition ofRobert Watson2005-02-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | a socket from a regular socket to a listening socket able to accept new connections. As part of this state transition, solisten() calls into the protocol to update protocol-layer state. There were several bugs in this implementation that could result in a race wherein a TCP SYN received in the interval between the protocol state transition and the shortly following socket layer transition would result in a panic in the TCP code, as the socket would be in the TCPS_LISTEN state, but the socket would not have the SO_ACCEPTCONN flag set. This change does the following: - Pushes the socket state transition from the socket layer solisten() to to socket "library" routines called from the protocol. This permits the socket routines to be called while holding the protocol mutexes, preventing a race exposing the incomplete socket state transition to TCP after the TCP state transition has completed. The check for a socket layer state transition is performed by solisten_proto_check(), and the actual transition is performed by solisten_proto(). - Holds the socket lock for the duration of the socket state test and set, and over the protocol layer state transition, which is now possible as the socket lock is acquired by the protocol layer, rather than vice versa. This prevents additional state related races in the socket layer. This permits the dual transition of socket layer and protocol layer state to occur while holding locks for both layers, making the two changes atomic with respect to one another. Similar changes are likely require elsewhere in the socket/protocol code. Reported by: Peter Holm <peter@holm.cc> Review and fixes from: emax, Antoine Brodin <antoine.brodin@laposte.net> Philosophical head nod: gnn Notes: svn path=/head/; revision=142190
* /* -> /*- 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
* Extend coverage of SOCK_LOCK(so) to include so_count, the socketRobert Watson2004-06-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Replace the if_name and if_unit members of struct ifnet with new membersBrooks Davis2003-10-311-1/+1
| | | | | | | | | | | | | | | | if_xname, if_dname, and if_dunit. if_xname is the name of the interface and if_dname/unit are the driver name and instance. This change paves the way for interface renaming and enhanced pseudo device creation and configuration symantics. Approved By: re (in principle) Reviewed By: njl, imp Tested On: i386, amd64, sparc64 Obtained From: NetBSD (if_xname) Notes: svn path=/head/; revision=121816
* Add support for VBR and CBR PVCs for IP over ATM.Hartmut Brandt2003-07-251-1/+3
| | | | | | | | Submitted by: Vincent Jardin <vjardin@wanadoo.fr> MFC after: 2 weeks Notes: svn path=/head/; revision=118004
* Remove the zone limits for all the zones used in the ATM code.Hartmut Brandt2003-07-221-1/+0
| | | | | | | | | | | | | | These were a left over from when the private memory pools were converted to use uma zones. The limit of UMA zones, however, works differently. When a zone is limited to only one or two pages than, on multi-cpu systems, processes can get stuck on the zonelimit, because all remaining free items are in caches of other CPUs. Also add rudimentary error handling in some places (panic) when a zone cannot be created. Notes: svn path=/head/; revision=117886
* Use __FBSDID().David E. O'Brien2003-06-111-9/+3
| | | | Notes: svn path=/head/; revision=116197
* Back out M_* changes, per decision of the TRB.Warner Losh2003-02-191-2/+2
| | | | | | | Approved by: trb Notes: svn path=/head/; revision=111119
* Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.Alfred Perlstein2003-01-211-2/+2
| | | | | | | Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT. Notes: svn path=/head/; revision=109623
* Back out my lats commit of locking down a socket, it conflicts with hsu's work.Seigo Tanimura2002-05-311-20/+1
| | | | | | | Requested by: hsu Notes: svn path=/head/; revision=97658
* Lock down a socket, milestone 1.Seigo Tanimura2002-05-201-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* - Add atm_sock_init()Andrew R. Reiter2002-05-071-8/+13
| | | | | | | - Move the Atm_pcb storage pool (atm_pcb_pool) to be an UMA zone. Notes: svn path=/head/; revision=96177
* - Change KM_ macro calls to the appropriate function call.Andrew R. Reiter2002-04-191-17/+10
| | | | | | | | | | - Nuke KM_ macros from port.h This is a leadin step towards cleaning up this code as I wait for some ATM cards and a ATM switch to arrive. Notes: svn path=/head/; revision=95063
* 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
* Add back some now needed #include <sys/systm.h>Poul-Henning Kamp2000-12-071-0/+1
| | | | | | | Fix various warnings while here anyway. Notes: svn path=/head/; revision=69726
* Remove more unused #includes.Poul-Henning Kamp2000-10-271-4/+0
| | | | Notes: svn path=/head/; revision=67730
* Remove unneeded #include <machine/clock.h>Poul-Henning Kamp2000-10-151-1/+0
| | | | Notes: svn path=/head/; revision=67164
* Remove the #include kitchensink <netatm/kern_include.h> and addPoul-Henning Kamp2000-10-121-1/+22
| | | | | | | | | | | | the #includes to the respective source files. Also un-nest includes in <dev/hfa/fore_include.h> I have run src/tools/tools/kerninclude to remove 1239 clearly unneeded #includes reducing the total from 3524 includes to 2285. Notes: svn path=/head/; revision=67004
* $Id$ -> $FreeBSD$Peter Wemm1999-08-281-2/+2
| | | | Notes: svn path=/head/; revision=50477
* Examine all occurrences of sprintf(), strcat(), and str[n]cpy()Archie Cobbs1998-12-041-4/+4
| | | | | | | | | | | | | | | | | for possible buffer overflow problems. Replaced most sprintf()'s with snprintf(); for others cases, added terminating NUL bytes where appropriate, replaced constants like "16" with sizeof(), etc. These changes include several bug fixes, but most changes are for maintainability's sake. Any instance where it wasn't "immediately obvious" that a buffer overflow could not occur was made safer. Reviewed by: Bruce Evans <bde@zeta.org.au> Reviewed by: Matthew Dillon <dillon@apollo.backplane.com> Reviewed by: Mike Spengler <mks@networkcs.com> Notes: svn path=/head/; revision=41514
* Trivial stylish changes, mostly to silence gcc.Poul-Henning Kamp1998-10-311-4/+4
| | | | | | | | Reviewed by: Mike Spengler <mks@networkcs.com> Submitted by: phk Notes: svn path=/head/; revision=40799
* Add new files for HARP3Poul-Henning Kamp1998-09-151-0/+1311
Host ATM Research Platform (HARP), Network Computing Services, Inc. This software was developed with the support of the Defense Advanced Research Projects Agency (DARPA). Notes: svn path=/head/; revision=39232
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