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mirror of https://git.FreeBSD.org/src.git synced 2024-12-22 11:17:19 +00:00
freebsd/sys/kern
Robert Watson 31f555a1c5 Assert socket buffer lock in sb_lock() to protect socket buffer sleep
lock state.  Convert tsleep() into msleep() with socket buffer mutex
as argument.  Hold socket buffer lock over sbunlock() to protect sleep
lock state.

Assert socket buffer lock in sbwait() to protect the socket buffer
wait state.  Convert tsleep() into msleep() with socket buffer mutex
as argument.

Modify sofree(), sosend(), and soreceive() to acquire SOCKBUF_LOCK()
in order to call into these functions with the lock, as well as to
start protecting other socket buffer use in their implementation.  Drop
the socket buffer mutexes around calls into the protocol layer, around
potentially blocking operations, for copying to/from user space, and
VM operations relating to zero-copy.  Assert the socket buffer mutex
strategically after code sections or at the beginning of loops.  In
some cases, modify return code to ensure locks are properly dropped.

Convert the potentially blocking allocation of storage for the remote
address in soreceive() into a non-blocking allocation; we may wish to
move the allocation earlier so that it can block prior to acquisition
of the socket buffer lock.

Drop some spl use.

NOTE: Some races exist in the current structuring of sosend() and
soreceive().  This commit only merges basic socket locking in this
code; follow-up commits will close additional races.  As merged,
these changes are not sufficient to run without Giant safely.

Reviewed by:	juli, tjr
2004-06-19 03:23:14 +00:00
..
bus_if.m
clock_if.m
device_if.m
genassym.sh
imgact_aout.c Change the types of vn_rdwr_inchunks()'s len and aresid arguments to 2004-06-05 02:18:28 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c Change the types of vn_rdwr_inchunks()'s len and aresid arguments to 2004-06-05 02:18:28 +00:00
imgact_gzip.c
imgact_shell.c
inflate.c
init_main.c Nice, is a property of a process as a whole.. 2004-06-16 00:26:31 +00:00
init_sysent.c Regen. 2004-04-05 10:17:23 +00:00
kern_acct.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
kern_acl.c
kern_alq.c
kern_clock.c Nice, is a property of a process as a whole.. 2004-06-16 00:26:31 +00:00
kern_condvar.c Associate a simple count of waiters with each condition variable. The 2004-04-06 19:17:46 +00:00
kern_conf.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
kern_context.c
kern_descrip.c Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
kern_environment.c If the buffer supplied to kenv(KENV_DUMP, ...) isn't big enough, 2004-04-28 01:27:33 +00:00
kern_event.c Add GIANT_REQUIRED to kqueue_close(), since kqueue currently requires 2004-06-01 18:05:41 +00:00
kern_exec.c Move TDF_SA from td_flags to td_pflags (and rename it accordingly) 2004-06-02 07:52:36 +00:00
kern_exit.c Add comment to reflect that we should retry after thread singling failed. 2004-06-18 11:13:49 +00:00
kern_fork.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
kern_idle.c
kern_intr.c Detect interrupt storms better. The storm detection didn't work at all 2004-06-05 18:27:28 +00:00
kern_jail.c Fix sysctl name: security.jail.getfsstate_getfsstatroot_only -> 2004-05-20 05:28:44 +00:00
kern_kse.c Shuffle some code around. 2004-06-11 17:48:20 +00:00
kern_kthread.c
kern_ktr.c
kern_ktrace.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
kern_linker.c Since we go to the trouble of compiling the kobj ops table for each class, 2004-05-17 21:24:39 +00:00
kern_lock.c Move TDF_DEADLKTREAT into td_pflags (and rename it accordingly) to avoid 2004-06-03 01:47:37 +00:00
kern_lockf.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
kern_mac.c Add /* !MAC */ to final #endif. 2004-05-03 22:54:46 +00:00
kern_malloc.c Bring in mbuma to replace mballoc. 2004-05-31 21:46:06 +00:00
kern_mbuf.c Fix a couple of bugs in the mbuf and packet ctors. In the latter case, 2004-06-01 16:17:10 +00:00
kern_mib.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
kern_module.c
kern_mtxpool.c
kern_mutex.c Add a new kernel option MUTEX_WAKE_ALL that changes the mutex unlock code 2004-04-06 19:12:24 +00:00
kern_ntptime.c Annual NTP kernel code spring-cleaning: 2004-03-14 15:23:05 +00:00
kern_physio.c Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
kern_poll.c Ensure that the poll_burst <= poll_burst_max constraint really holds. 2004-04-15 07:38:44 +00:00
kern_proc.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
kern_prot.c Socket MAC labels so_label and so_peerlabel are now protected by 2004-06-13 02:50:07 +00:00
kern_resource.c Nice, is a property of a process as a whole.. 2004-06-16 00:26:31 +00:00
kern_sema.c Change the return value of sema_timedwait() so it returns 0 on 2004-06-14 18:19:05 +00:00
kern_shutdown.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
kern_sig.c Deorbit COMPAT_SUNOS. 2004-06-11 11:16:26 +00:00
kern_subr.c Remove checks for curthread == NULL - it can't happen. 2004-06-03 10:22:47 +00:00
kern_switch.c
kern_sx.c
kern_synch.c Remove a stale and misleading comment. 2004-06-07 09:35:00 +00:00
kern_syscalls.c
kern_sysctl.c Make sysctl_wire_old_buffer() respect ENOMEM from vslock() by marking 2004-06-11 02:20:37 +00:00
kern_tc.c
kern_thr.c If you're trying to find out if a thread is valid and in 2004-04-19 14:20:01 +00:00
kern_thread.c If thread singler wants to terminate other threads, make sure it includes 2004-06-18 06:15:21 +00:00
kern_time.c Implement CLOCK_VIRTUAL and CLOCK_PROF for clock_gettime(2) and 2004-06-17 23:12:12 +00:00
kern_timeout.c The paper "Hashed Timers and Hierarchical Wheels: Data Structures for the 2004-04-25 04:10:17 +00:00
kern_umtx.c Use the proc lock to sleep on a libthr umtx. 2004-03-27 14:32:03 +00:00
kern_uuid.c
kern_xxx.c Deorbit COMPAT_SUNOS. 2004-06-11 11:16:26 +00:00
ksched.c
link_elf_obj.c Change strategy based on a suggestion from Ian Dowse. Instead of trying 2004-06-15 23:57:02 +00:00
link_elf.c Include <sys/gmon.h> instead of <machine/profile.h> for the declaration 2004-05-19 14:36:38 +00:00
linker_if.m
Make.tags.inc
Makefile
makesyscalls.sh
md4c.c
md5c.c
p1003_1b.c
posix4_mib.c
sched_4bsd.c Nice, is a property of a process as a whole.. 2004-06-16 00:26:31 +00:00
sched_ule.c Nice, is a property of a process as a whole.. 2004-06-16 00:26:31 +00:00
subr_acl_posix1e.c
subr_autoconf.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
subr_blist.c Move the definitions of SWAPBLK_NONE and SWAPBLK_MASK from vm_page.h to 2004-06-04 04:03:26 +00:00
subr_bus.c Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
subr_clist.c
subr_clock.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
subr_devstat.c Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
subr_disk.c
subr_eventhandler.c
subr_hints.c
subr_kobj.c
subr_log.c Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
subr_mbpool.c
subr_mchain.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
subr_module.c
subr_msgbuf.c
subr_param.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
subr_pcpu.c
subr_power.c
subr_prf.c Add a sysctl/tunable, "kern.always_console_output", that lets you set 2004-06-18 20:12:42 +00:00
subr_prof.c Enable MI bits for gcc -ftest-coverage -fprofile-arcs on amd64. 2004-05-29 01:18:14 +00:00
subr_rman.c Fix off by one error, twice. 2004-04-12 23:02:21 +00:00
subr_rtc.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
subr_sbuf.c
subr_scanf.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
subr_sleepqueue.c Fixed some common printf format errors. Don't assume that "struct foo *" 2004-05-14 20:51:42 +00:00
subr_smp.c Move the CPU newbus attachment to i386 legacy. The acpi_cpu device will 2004-05-06 15:54:02 +00:00
subr_taskqueue.c
subr_trap.c Remove unused variable. 2004-03-31 08:20:44 +00:00
subr_turnstile.c Rename turnstile_wakeup() to turnstile_broadcast() to make the naming 2004-04-06 19:07:21 +00:00
subr_witness.c Introduce socket and UNIX domain socket locks into hard-coded lock 2004-06-13 00:23:03 +00:00
sys_generic.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
sys_pipe.c Revise the direct or optimized case to use uiomove_fromphys() by the reader 2004-03-27 19:50:23 +00:00
sys_process.c Finish fixing up Alpha to work with an MP safe ptrace(): 2004-04-01 20:56:44 +00:00
sys_socket.c Merge additional socket buffer locking from rwatson_netperf: 2004-06-17 22:48:11 +00:00
syscalls.c Regen. 2004-04-05 10:17:23 +00:00
syscalls.master Add lgetfh(2) which is like getfh(2) but doesn't follow symlinks. 2004-04-05 10:15:53 +00:00
sysv_ipc.c
sysv_msg.c Add missing #include <sys/module.h> 2004-05-30 20:34:58 +00:00
sysv_sem.c Add missing #include <sys/module.h> 2004-05-30 20:34:58 +00:00
sysv_shm.c Add missing #include <sys/module.h> 2004-05-30 20:34:58 +00:00
tty_compat.c Deorbit COMPAT_SUNOS. 2004-06-11 11:16:26 +00:00
tty_conf.c Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
tty_cons.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
tty_pty.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
tty_subr.c
tty_tty.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
tty.c Do the dreaded s/dev_t/struct cdev */ 2004-06-16 09:47:26 +00:00
uipc_accf.c Add a global mutex, accept_filter_mtx, to protect the global list of 2004-06-01 04:08:48 +00:00
uipc_cow.c In some cases, sf_buf_alloc() should sleep with pri PCATCH; in others, it 2004-04-03 09:16:27 +00:00
uipc_domain.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
uipc_jumbo.c
uipc_mbuf2.c Bring in mbuma to replace mballoc. 2004-05-31 21:46:06 +00:00
uipc_mbuf.c Gah! Plug a mbuf leak I introduced in the last commit. 2004-06-11 18:17:25 +00:00
uipc_proto.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
uipc_sem.c Add missing #include <sys/module.h> 2004-05-30 20:34:58 +00:00
uipc_sockbuf.c Assert socket buffer lock in sb_lock() to protect socket buffer sleep 2004-06-19 03:23:14 +00:00
uipc_socket2.c Assert socket buffer lock in sb_lock() to protect socket buffer sleep 2004-06-19 03:23:14 +00:00
uipc_socket.c Assert socket buffer lock in sb_lock() to protect socket buffer sleep 2004-06-19 03:23:14 +00:00
uipc_syscalls.c Assert socket buffer lock in sb_lock() to protect socket buffer sleep 2004-06-19 03:23:14 +00:00
uipc_usrreq.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
vfs_acl.c
vfs_aio.c Merge additional socket buffer locking from rwatson_netperf: 2004-06-17 22:48:11 +00:00
vfs_bio.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
vfs_cache.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
vfs_cluster.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
vfs_default.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
vfs_export.c Include <sys/mutex.h> and its prerequisite <sys/lock.h> instesd of depending 2004-04-21 12:10:30 +00:00
vfs_extattr.c Deorbit COMPAT_SUNOS. 2004-06-11 11:16:26 +00:00
vfs_init.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
vfs_lookup.c Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00
vfs_mount.c Reduce the thaumaturgical level of root filesystem mounts: Instead of using 2004-06-17 21:24:13 +00:00
vfs_subr.c Second half of the dev_t cleanup. 2004-06-17 17:16:53 +00:00
vfs_syscalls.c Deorbit COMPAT_SUNOS. 2004-06-11 11:16:26 +00:00
vfs_vnops.c Change the types of vn_rdwr_inchunks()'s len and aresid arguments to 2004-06-05 02:18:28 +00:00
vnode_if.src Remove advertising clause from University of California Regent's license, 2004-04-05 21:03:37 +00:00