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74fb0ba732
freebsd-nq/sys/kern
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John Baldwin 74fb0ba732 Rework socket upcalls to close some races with setup/teardown of upcalls. 
- 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
2009-06-01 21:17:03 +00:00
..
bus_if.m Allow device hints to wire the unit numbers of devices. 2008-11-18 21:01:54 +00:00
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh refactor code so it can run in a chroot without having to have /dev/mounted 2008-01-18 17:02:14 +00:00
imgact_aout.c Add sv_flags field to struct sysentvec with intention to provide description 2008-11-22 12:36:15 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c Fix KBI breakage by r190520 which affects older linux.ko binaries: 2009-04-05 09:27:19 +00:00
imgact_gzip.c VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in 2008-01-13 14:44:15 +00:00
imgact_shell.c Decontextualize the couplet VOP_GETATTR / VOP_SETATTR as the passed thread 2008-08-28 15:23:18 +00:00
inflate.c
init_main.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
init_sysent.c Regenerate generated syscall files following changes to struct sysent in 2009-06-01 16:14:38 +00:00
kern_acct.c Remove the thread argument from the FSD (File-System Dependent) parts of 2009-05-11 15:33:26 +00:00
kern_alq.c Remove VOP_LEASE and supporting functions. This hasn't been used since 2009-04-10 10:52:19 +00:00
kern_clock.c Mark the clock sysctls as MPSAFE. 2009-05-18 12:03:43 +00:00
kern_condvar.c Remove unused variables p' and unneeded assignments of rval'. 2009-02-26 13:00:13 +00:00
kern_conf.c Move the M_WAITOK flag in notify() into an M_NOWAIT one in order to match 2009-05-21 13:22:07 +00:00
kern_cons.c Remove unneeded variable `ocn_mute'. 2009-02-26 13:01:45 +00:00
kern_context.c
kern_cpu.c Provide a new CPU device driver ivar to report the nominal speed of the 2009-05-31 08:59:15 +00:00
kern_cpuset.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
kern_ctf.c Add the CTF source file which gets shared with link_elf.c and link_elf_obj.c. 2008-05-23 03:04:27 +00:00
kern_descrip.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
kern_dtrace.c Remove code that isn't required. It actually breaks the case where KDTRACE_HOOKS 2008-06-16 04:44:29 +00:00
kern_environment.c Correctly sanity-check timer IDs. [SA-09:06] 2009-03-23 00:00:50 +00:00
kern_event.c Fix a number of style issues in the MALLOC / FREE commit. I've tried to 2008-10-23 20:26:15 +00:00
kern_exec.c Supply AT_EXECPATH auxinfo entry to the interpreter, both for native and 2009-03-17 12:53:28 +00:00
kern_exit.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
kern_fail.c fail(9) support: 2009-05-27 16:36:54 +00:00
kern_fork.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
kern_idle.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
kern_intr.c Binding interrupts to a CPU consists of two parts: setting up CPU 2009-05-18 14:02:55 +00:00
kern_jail.c Place hostnames and similar information fully under the prison system. 2009-05-29 21:27:12 +00:00
kern_kthread.c Kill a dead variable 2008-08-03 21:07:19 +00:00
kern_ktr.c
kern_ktrace.c Remove VOP_LEASE and supporting functions. This hasn't been used since 2009-04-10 10:52:19 +00:00
kern_linker.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
kern_lock.c Add the OpenSolaris dtrace lockstat provider. The lockstat provider 2009-05-26 20:28:22 +00:00
kern_lockf.c The advisory lock may be activated or activated and removed during the 2009-05-24 12:39:38 +00:00
kern_lockstat.c Add the OpenSolaris dtrace lockstat provider. The lockstat provider 2009-05-26 20:28:22 +00:00
kern_malloc.c Retire kern.vm.kmem.size. It was marked as obsolete prior to 5.2, so 2009-05-09 19:00:47 +00:00
kern_mbuf.c Temporary workaround for the limitations of the mbuf flowid field: zero 2009-01-01 20:03:01 +00:00
kern_mib.c Place hostnames and similar information fully under the prison system. 2009-05-29 21:27:12 +00:00
kern_module.c When the SYSINIT() to load a module invokes the MOD_LOAD event successfully, 2008-12-05 16:47:30 +00:00
kern_mtxpool.c Fix a number of style issues in the MALLOC / FREE commit. I've tried to 2008-10-23 20:26:15 +00:00
kern_mutex.c Remove extra cpu_spinwait() invocations. This should really only be used 2009-05-29 14:03:34 +00:00
kern_ntptime.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
kern_osd.c Make the rmlock(9) interface a bit more like the rwlock(9) interface: 2009-05-29 10:52:37 +00:00
kern_physio.c
kern_pmc.c Support sparsely numbered CPUs. 2008-09-22 10:37:02 +00:00
kern_poll.c Reimplement the netisr framework in order to support parallel netisr 2009-06-01 10:41:38 +00:00
kern_priv.c Reduce the verbosity of SDT trace points for DTrace by defining several 2009-03-03 17:15:05 +00:00
kern_proc.c Add a flags field to struct ucred, and export that via kinfo_proc, 2009-06-01 20:26:51 +00:00
kern_prot.c Introduce an interm userland-kernel API for creating vnets and 2009-05-31 12:10:04 +00:00
kern_resource.c Don't rearm callout if the process is exiting, it may leak a callout 2008-10-24 01:09:24 +00:00
kern_rmlock.c Minor style tweak. 2009-05-29 14:25:51 +00:00
kern_rwlock.c Remove extra cpu_spinwait() invocations. This should really only be used 2009-05-29 14:03:34 +00:00
kern_sdt.c Add kernel support for the Statically Defined Trace provider. 2008-05-18 19:32:36 +00:00
kern_sema.c
kern_shutdown.c Place hostnames and similar information fully under the prison system. 2009-05-29 21:27:12 +00:00
kern_sig.c Remove VOP_LEASE and supporting functions. This hasn't been used since 2009-04-10 10:52:19 +00:00
kern_subr.c Make ureadc() warn when holding any locks, just like uiomove(). 2008-08-28 19:34:58 +00:00
kern_switch.c fix typo in runz_fuzz 2008-05-12 06:42:06 +00:00
kern_sx.c The patch for r193011 was partially rejected when applied, complete it. 2009-05-29 08:01:48 +00:00
kern_synch.c Remove even more unneeded variable assignments. 2009-02-26 15:51:54 +00:00
kern_syscalls.c Various style fixes. 7 space indent is just odd. 2008-09-18 20:10:11 +00:00
kern_sysctl.c Remove do-nothing code that was required to dirty the old buffer on Alpha. 2009-05-15 21:34:58 +00:00
kern_tc.c Remove conditionally compiled time counter statistics; tools like 2009-04-11 22:01:40 +00:00
kern_thr.c Remove even more unneeded variable assignments. 2009-02-26 15:51:54 +00:00
kern_thread.c - Implement a new mechanism for resetting lock profiling. We now 2009-03-15 06:41:47 +00:00
kern_time.c Remove VOP_LEASE and supporting functions. This hasn't been used since 2009-04-10 10:52:19 +00:00
kern_timeout.c Add explicit static DTrace tracing to the callout mechanism, capturing 2009-01-24 10:22:49 +00:00
kern_umtx.c Make UMTX_OP_WAIT_UINT actually wait for an unsigned integer on 64-bits 2009-04-13 05:21:17 +00:00
kern_uuid.c Lock the interface address list while iterating a network interface's 2009-04-19 21:36:18 +00:00
kern_vimage.c Introduce an interm userland-kernel API for creating vnets and 2009-05-31 12:10:04 +00:00
kern_xxx.c Place hostnames and similar information fully under the prison system. 2009-05-29 21:27:12 +00:00
ksched.c Commit 14/14 of sched_lock decomposition. 2007-06-05 00:00:57 +00:00
link_elf_obj.c Add the ksyms(4) pseudo driver. The ksyms driver allows a process to 2009-05-26 21:39:09 +00:00
link_elf.c Add the ksyms(4) pseudo driver. The ksyms driver allows a process to 2009-05-26 21:39:09 +00:00
linker_if.m Add the ksyms(4) pseudo driver. The ksyms driver allows a process to 2009-05-26 21:39:09 +00:00
Make.tags.inc Catch up with the disappearance of sys/dev/hfa. 2008-12-01 14:34:42 +00:00
Makefile style.Makefile(5) 2007-12-14 21:30:51 +00:00
makesyscalls.sh Add 'sy_flags', a currently unused per-syscall entry flags field that will 2009-06-01 16:13:06 +00:00
md4c.c
md5c.c
p1003_1b.c Remove kernel support for M:N threading. 2008-03-12 10:12:01 +00:00
posix4_mib.c
sched_4bsd.c - Use __XSTRING where I want the define to be expanded. This resulted in 2009-01-25 07:35:10 +00:00
sched_ule.c - Fix non-SMP build by encapsulating idle spin logic in a macro. 2009-04-29 23:04:31 +00:00
serdev_if.m
stack_protector.c Fix a chicken-and-egg problem: this files implements SSP support, 2008-06-26 07:52:45 +00:00
subr_acl_posix1e.c Make 'struct acl' larger, as required to support NFSv4 ACLs. Provide 2009-05-22 15:56:43 +00:00
subr_autoconf.c Prefer ANSI function definitions to K&R ones. 2009-02-03 07:52:07 +00:00
subr_blist.c Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
subr_bufring.c - bump __FreeBSD version to reflect added buf_ring, memory barriers, 2008-11-22 05:55:56 +00:00
subr_bus.c Fix a typo. 2009-05-20 17:19:30 +00:00
subr_clist.c Remove a stale comment from the clists code. 2009-02-09 11:27:56 +00:00
subr_clock.c Now that all platforms use genclock, shuffle things around slightly 2008-04-22 19:38:30 +00:00
subr_devstat.c Use NULL in preference to 0 in pointer contexts. 2009-02-03 07:54:42 +00:00
subr_disk.c Clarify and reimplement the bioq API so that bioq_disksort() has 2009-02-13 11:36:32 +00:00
subr_eventhandler.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
subr_fattime.c
subr_firmware.c Use NULL in preference to 0 for pointers. 2009-02-03 07:51:11 +00:00
subr_hints.c
subr_kdb.c Spell NULL properly, use (void) rather than () for functions with no 2009-05-09 19:08:22 +00:00
subr_kobj.c Use NULL in preference to 0 in pointer contexts. 2009-02-03 07:54:42 +00:00
subr_lock.c - Implement a new mechanism for resetting lock profiling. We now 2009-03-15 06:41:47 +00:00
subr_log.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
subr_mbpool.c Add parens around *free in *free++ in mbp_count() so that mbp_count() 2007-05-27 17:38:36 +00:00
subr_mchain.c Replaced the misleading uses of a historical artefact M_TRYWAIT with M_WAIT. 2008-03-25 09:39:02 +00:00
subr_module.c
subr_msgbuf.c
subr_param.c Improve the description of a few sysctls. 2009-03-23 20:18:06 +00:00
subr_pcpu.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
subr_power.c
subr_prf.c Remove redundant code in printf() and vprintf(). 2009-02-27 13:28:54 +00:00
subr_prof.c Use ANSI function definition for profil. 2009-02-03 07:52:36 +00:00
subr_rman.c sysctl_rman: report shared resources to devinfo 2009-05-19 14:08:21 +00:00
subr_rtc.c Clean up MI inittodr(9) and kill noop code. 2009-03-23 21:16:21 +00:00
subr_sbuf.c Switch to simplified BSD license (with phk's approval), plus whitespace 2008-08-09 10:26:21 +00:00
subr_scanf.c
subr_sglist.c Add a simple API to manage scatter/gather lists of phyiscal addresses. 2009-06-01 20:35:39 +00:00
subr_sleepqueue.c Revision 184199 had not been fully reverted, add missing piece. 2008-12-01 01:54:55 +00:00
subr_smp.c - Remove the bogus idle thread state code. This may have a race in it 2009-04-29 03:15:43 +00:00
subr_stack.c Make it possible to compile kernel with KTR but without DDB. 2008-10-30 21:48:28 +00:00
subr_taskqueue.c Remove semicolon left in the last commit 2009-02-13 18:51:39 +00:00
subr_trap.c - Bug fix: prevent a thread from migrating between CPUs between the 2008-12-13 13:07:12 +00:00
subr_turnstile.c Make ddb command registration dynamic so modules can extend 2008-09-15 22:45:14 +00:00
subr_unit.c Since cdev mutex is after system map mutex in global lock order, free() 2007-07-04 06:56:58 +00:00
subr_witness.c Add minimal ZFS lock hierarchy 2009-05-20 02:51:48 +00:00
sys_generic.c - Implement a lockless file descriptor lookup algorithm in 2009-05-14 03:24:22 +00:00
sys_pipe.c - Make maxpipekva a signed long rather than an unsigned long as overflow 2009-03-10 21:28:43 +00:00
sys_process.c Use the p_sysent->sv_flags flag SV_ILP32 to detect 32bit process 2009-03-02 18:43:50 +00:00
sys_socket.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
syscalls.c Regen for new jail system calls in r191673. 2009-04-29 21:50:13 +00:00
syscalls.master Introduce the extensible jail framework, using the same "name=value" 2009-04-29 21:14:15 +00:00
systrace_args.c Regen for new jail system calls in r191673. 2009-04-29 21:50:13 +00:00
sysv_ipc.c Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in 2007-06-12 00:12:01 +00:00
sysv_msg.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
sysv_sem.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
sysv_shm.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
tty_compat.c Fix an awful bug inside our COMPAT_43TTY code. 2008-09-04 16:30:53 +00:00
tty_info.c Print an extra newline when not at the first column already. 2009-05-17 16:17:48 +00:00
tty_inq.c Enable secure TTY input buffer flushing by default. 2009-05-21 16:48:06 +00:00
tty_outq.c Use unsigned longs for the TTY's sysctl stats. 2009-02-26 10:28:32 +00:00
tty_pts.c Last minute TTY API change: remove mutex argument from tty_alloc(). 2009-05-29 06:41:23 +00:00
tty_pty.c Don't use PTY name as format string, even though it isn't insecure here. 2009-02-26 10:14:10 +00:00
tty_tty.c Remove unneeded Giant locking of /dev/tty. 2008-06-03 12:38:00 +00:00
tty_ttydisc.c If we have a regular rint handler, never go into rint_bypass mode. 2009-05-07 17:39:23 +00:00
tty.c Last minute TTY API change: remove mutex argument from tty_alloc(). 2009-05-29 06:41:23 +00:00
uipc_accf.c Retire the MALLOC and FREE macros. They are an abomination unto style(9). 2008-10-23 15:53:51 +00:00
uipc_cow.c Extend the struct vm_page wire_count to u_int to avoid the overflow 2009-01-03 13:24:08 +00:00
uipc_debug.c Add missing socket options. 2009-05-26 09:19:21 +00:00
uipc_domain.c Introduce vnet module registration / initialization framework with 2009-04-11 05:58:58 +00:00
uipc_mbuf2.c Merge first in a series of TrustedBSD MAC Framework KPI changes 2007-10-24 19:04:04 +00:00
uipc_mbuf.c Teach m_copyback() to use trailing space of the last mbuf in chain. 2009-01-18 20:19:55 +00:00
uipc_mqueue.c Remove the thread argument from the FSD (File-System Dependent) parts of 2009-05-11 15:33:26 +00:00
uipc_sem.c Ensure that the semaphore value is re-checked after sem_lock 2009-03-12 10:36:39 +00:00
uipc_shm.c Shared memory objects that have size which is not necessarily equal to 2008-12-01 22:33:50 +00:00
uipc_sockbuf.c Rework socket upcalls to close some races with setup/teardown of upcalls. 2009-06-01 21:17:03 +00:00
uipc_socket.c Rework socket upcalls to close some races with setup/teardown of upcalls. 2009-06-01 21:17:03 +00:00
uipc_syscalls.c Split native socketpair() syscall onto kern_socketpair() which should 2009-05-31 12:12:38 +00:00
uipc_usrreq.c Change the curvnet variable from a global const struct vnet *, 2009-05-05 10:56:12 +00:00
vfs_acl.c Make 'struct acl' larger, as required to support NFSv4 ACLs. Provide 2009-05-22 15:56:43 +00:00
vfs_aio.c Rework socket upcalls to close some races with setup/teardown of upcalls. 2009-06-01 21:17:03 +00:00
vfs_bio.c Eliminate a comment describing code that was deleted over eight years ago. 2009-06-01 06:12:08 +00:00
vfs_cache.c Unbreak the build. Add missed probes. 2009-05-31 20:16:06 +00:00
vfs_cluster.c - Complete part of the unfinished bufobj work by consistently using 2008-03-22 09:15:16 +00:00
vfs_default.c Add VOP_ACCESSX, which can be used to query for newly added V* 2009-05-30 13:59:05 +00:00
vfs_export.c Remove the thread argument from the FSD (File-System Dependent) parts of 2009-05-11 15:33:26 +00:00
vfs_extattr.c Remove the thread argument from the FSD (File-System Dependent) parts of 2009-05-11 15:33:26 +00:00
vfs_hash.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
vfs_init.c Expand the scope of the sysctllock sx lock to protect the sysctl tree itself. 2009-02-06 14:51:32 +00:00
vfs_lookup.c Let vfs_lookup() return ENOTDIR if the path has a trailing slash and 2009-05-29 10:02:44 +00:00
vfs_mount.c sys/boot/common.c 2009-06-01 01:02:30 +00:00
vfs_subr.c Remove the now invalid (and possibly unused) debug.mpsafevfs 2009-05-30 23:52:23 +00:00
vfs_syscalls.c Add hierarchical jails. A jail may further virtualize its environment 2009-05-27 14:11:23 +00:00
vfs_vnops.c Remove the thread argument from the FSD (File-System Dependent) parts of 2009-05-11 15:33:26 +00:00
vnode_if.src Add VOP_ACCESSX, which can be used to query for newly added V* 2009-05-30 13:59:05 +00:00