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* Merge additional socket buffer locking from rwatson_netperf:rwatson2004-06-171-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | - Lock down low hanging fruit use of sb_flags with socket buffer lock. - Lock down low hanging fruit use of so_state with socket lock. - Lock down low hanging fruit use of so_options. - Lock down low-hanging fruit use of sb_lowwat and sb_hiwat with socket buffer lock. - Annotate situations in which we unlock the socket lock and then grab the receive socket buffer lock, which are currently actually the same lock. Depending on how we want to play our cards, we may want to coallesce these lock uses to reduce overhead. - Convert a if()->panic() into a KASSERT relating to so_state in soaccept(). - Remove a number of splnet()/splx() references. More complex merging of socket and socket buffer locking to follow.
* The socket field so_state is used to hold a variety of socket relatedrwatson2004-06-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Rename dup_sockaddr() to sodupsockaddr() for consistency with otherrwatson2004-03-011-2/+2
| | | | | | | | | | | | functions in kern_socket.c. Rename the "canwait" field to "mflags" and pass M_WAITOK and M_NOWAIT in from the caller context rather than "1" or "0". Correct mflags pass into mac_init_socket() from previous commit to not include M_ZERO. Submitted by: sam
* Use __FBSDID().obrien2003-06-111-2/+4
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* Back out M_* changes, per decision of the TRB.imp2003-02-191-2/+2
| | | | Approved by: trb
* Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.alfred2003-01-211-2/+2
| | | | Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
* o Untangle the confusion with the malloc flags {M_WAITOK, M_NOWAIT} andbmilekic2002-12-191-1/+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++)
* Fix a fatal typo introduced in revision 1.13 that caused the mbuf chains totjr2002-11-261-1/+1
| | | | | | be created incorrectly for requests larger than NB_SORECEIVE_CHUNK bytes. Approved by: re
* Increase send/receive queue to accomodate large readx/writex requests.bp2002-09-181-20/+68
| | | | | | | Receive packets in a small pieces (NB_SORECEIVE_CHUNK), so TCP slowstart will get its ACKs faster. Obtained from: Darwin
* Back out my lats commit of locking down a socket, it conflicts with hsu's work.tanimura2002-05-311-9/+1
| | | | Requested by: hsu
* Lock down a socket, milestone 1.tanimura2002-05-201-1/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Revert the change of #includes in sys/filedesc.h and sys/socketvar.h.tanimura2002-04-301-4/+7
| | | | | | | | | | 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.
* Initialize thread select queue in the same way as rev 1.93 of sys_generic.cbp2002-04-231-0/+3
| | | | | | does. Missed and found by: alfred
* Missed this file for select SMP fixes associated with rev 1.93 ofalfred2002-03-141-27/+24
| | | | kern/sys_generic.c
* Simple p_ucred -> td_ucred changes to start using the per-thread ucredjhb2002-02-271-1/+1
| | | | reference.
* Spelling fixes.bp2001-12-311-1/+1
| | | | | | PR: kern/33131 Submitted by: Anders Andersson <anders@hack.org> MFC after: 1 week
* o Make the credential used by socreate() an explicit argument torwatson2001-12-311-1/+2
| | | | | | | | | | | | | | socreate(), rather than getting it implicitly from the thread argument. o Make NFS cache the credential provided at mount-time, and use the cached credential (nfsmount->nm_cred) when making calls to socreate() on initially connecting, or reconnecting the socket. This fixes bugs involving NFS over TCP and ipfw uid/gid rules, as well as bugs involving NFS and mandatory access control implementations. Reviewed by: freebsd-arch
* Pull netsmb requester from the pre-KSE world. This update mostly basedbp2001-12-021-46/+59
| | | | on the patches submitted by Max Khon <fjoe@iclub.nsu.ru>
* Back out scanning file descriptors with holding a process lock.tanimura2001-05-151-2/+16
| | | | | selrecord() requires allproc sx in pfind(), resulting in lock order reversal between allproc and a process lock.
* - Convert msleep(9) in select(2) and poll(2) to cv_*wait*(9).tanimura2001-05-141-9/+13
| | | | | | | | | | | | | - Since polling should not involve sleeping, keep holding a process lock upon scanning file descriptors. - Hold a reference to every file descriptor prior to entering polling loop in order to avoid lock order reversal between lockmgr and p_mtx upon calling fdrop() in fo_poll(). (NOTE: this work has not been done for netncp and netsmb yet because a socket itself has no reference counts.) Reviewed by: jhb
* Import kernel part of SMB/CIFS requester.bp2001-04-101-0/+672
Add smbfs(CIFS) filesystem. Userland part will be in the ports tree for a while. Obtained from: smbfs-1.3.7-dev package.
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