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* MIPS: Save static registers before sysmipsJames Hogan2017-10-121-1/+1
| | | | | | | | | | | | | | | | | | | | commit 49955d84cd9ccdca5a16a495e448e1a06fad9e49 upstream. The MIPS sysmips system call handler may return directly from the MIPS_ATOMIC_SET case (mips_atomic_set()) to syscall_exit. This path restores the static (callee saved) registers, however they won't have been saved on entry to the system call. Use the save_static_function() macro to create a __sys_sysmips wrapper function which saves the static registers before calling sys_sysmips, so that the correct static register state is restored by syscall_exit. Fixes: f1e39a4a616c ("MIPS: Rewrite sysmips(MIPS_ATOMIC_SET, ...) in C with inline assembler") Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16149/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
* KEYS: 64-bit MIPS needs to use compat_sys_keyctl for 32-bit userspaceDavid Howells2016-11-201-1/+1
| | | | | | | | | | | | | | | | | | commit 20f06ed9f61a185c6dabd662c310bed6189470df upstream. MIPS64 needs to use compat_sys_keyctl for 32-bit userspace rather than calling sys_keyctl. The latter will work in a lot of cases, thereby hiding the issue. Reported-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: David Howells <dhowells@redhat.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: linux-security-module@vger.kernel.org Cc: keyrings@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/13832/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
* MIPS: scall64-o32: Fix indirect syscall detectionMarkos Chandras2014-09-171-4/+8
| | | | | | | | | | | | | | | | | | | | | commit 5245689900804604fdc349c8d9b8985b0e401ae2 upstream. Commit 4c21b8fd8f14 (MIPS: seccomp: Handle indirect system calls (o32)) added indirect syscall detection for O32 processes running on MIPS64 but it did not work as expected. The reason is the the scall64-o32 implementation differs compared to scall32-o32. In the former, the v0 (syscall number) register contains the absolute syscall number (4000 + X) whereas in the latter it contains the relative syscall number (X). Fix the code to avoid doing an extra addition, and load the v0 register directly to the first argument for syscall_trace_enter. Moreover, set the .reorder assembler option in order to have better control on this part of the assembly code. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Patchwork: http://patchwork.linux-mips.org/patch/7481/ Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* MIPS: Wire up renameat2 syscall.Ralf Baechle2014-05-131-0/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: seccomp: Handle indirect system calls (o32)Markos Chandras2014-03-261-1/+12
| | | | | | | | | | | | | | | | | | | When userland uses syscall() to perform an indirect system call the actually system call that needs to be checked by the filter is on the first argument. The kernel code needs to handle this case by looking at the original syscall number in v0 and if it's NR_syscall, then it needs to examine the first argument to identify the real system call that will be executed. Similarly, we need to 'virtually' shift the syscall() arguments so the syscall_get_arguments() function can fetch the correct arguments for the indirect system call. Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Reviewed-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6404/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: kernel: scalls: Skip the syscall if denied by the seccomp filterMarkos Chandras2014-03-261-1/+3
| | | | | | | | | Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Reviewed-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6399/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Wire up sched_setattr/sched_getattr syscallsJames Hogan2014-02-041-0/+2
| | | | | | | | | | | | | Wire up for MIPS the new sched_setattr and sched_getattr system calls added in commit d50dde5a10f3 (sched: Add new scheduler syscalls to support an extended scheduling parameters ABI) merged in v3.14-rc1. Signed-off-by: James Hogan <james.hogan@imgtec.com> Reviewed-by: Markos Chandras <markos.chandras@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6502/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: compat: Export O32 syscall table and rename to avoid duplicate symbol.Ralf Baechle2013-10-291-5/+5
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Cleanup flags in syscall flags handlers.Ralf Baechle2013-06-101-1/+1
| | | | | | This will simplify further modifications. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINEAl Viro2013-05-091-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* merge compat sys_ipc instancesAl Viro2013-03-031-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* consolidate compat lookup_dcookie()Al Viro2013-03-031-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* convert sendfile{,64} to COMPAT_SYSCALL_DEFINEAl Viro2013-03-031-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge branch 'for-linus' of ↵Linus Torvalds2013-03-021-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal Pull signal/compat fixes from Al Viro: "Fixes for several regressions introduced in the last signal.git pile, along with fixing bugs in truncate and ftruncate compat (on just about anything biarch at least one of those two had been done wrong)." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: compat: restore timerfd settime and gettime compat syscalls [regression] braino in "sparc: convert to ksignal" fix compat truncate/ftruncate switch lseek to COMPAT_SYSCALL_DEFINE lseek() and truncate() on sparc really need sign extension
| * fix compat truncate/ftruncateAl Viro2013-02-251-2/+2
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2013-03-021-7/+7
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS updates from Ralf Baechle: o Add basic support for the Mediatek/Ralink Wireless SoC family. o The Qualcomm Atheros platform is extended by support for the new QCA955X SoC series as well as a bunch of patches that get the code ready for OF support. o Lantiq and BCM47XX platform have a few improvements and bug fixes. o MIPS has sent a few patches that get the kernel ready for the upcoming microMIPS support. o The rest of the series is made up of small bug fixes and cleanups that relate to various parts of the MIPS code. The biggy in there is a whitespace cleanup. After I was sent another set of whitespace cleanup patches I decided it was the time to clean the whitespace "issues" for once and and that touches many files below arch/mips/. Fix up silly conflicts, mostly due to whitespace cleanups. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (105 commits) MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h MIPS: remove broken conditional inside vpe loader code MIPS: SMTC: fix implicit declaration of set_vi_handler MIPS: early_printk: drop __init annotations MIPS: Probe for and report hardware virtualization support. MIPS: ath79: add support for the Qualcomm Atheros AP136-010 board MIPS: ath79: add USB controller registration code for the QCA955X SoCs MIPS: ath79: add PCI controller registration code for the QCA955X SoCs MIPS: ath79: add WMAC registration code for the QCA955X SoCs MIPS: ath79: register UART for the QCA955X SoCs MIPS: ath79: add QCA955X specific glue to ath79_device_reset_{set, clear} MIPS: ath79: add GPIO setup code for the QCA955X SoCs MIPS: ath79: add IRQ handling code for the QCA955X SoCs MIPS: ath79: add clock setup code for the QCA955X SoCs MIPS: ath79: add SoC detection code for the QCA955X SoCs MIPS: ath79: add early printk support for the QCA955X SoCs MIPS: ath79: fix WMAC IRQ resource assignment mips: reserve elfcorehdr mips: Make sure kernel memory is in iomem MIPS: ath79: use dynamically allocated USB platform devices ...
| * MIPS: Whitespace cleanup.Ralf Baechle2013-02-011-7/+7
| | | | | | | | | | | | | | | | Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | mips: switch to generic sys_fork() and sys_clone()Al Viro2013-02-031-2/+2
| | | | | | | | | | | | | | we still need the wrappers to store callee-saved registers in pt_regs, but once that done we can jump to kernel/fork.c variants. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | mips: don't bother with compat_sys_futex() wrappersAl Viro2013-02-031-1/+1
| | | | | | | | | | | | ... it's COMPAT_SYSCALL_DEFINE now Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | mips: switch to generic compat rt_sigaction()Al Viro2013-02-031-1/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | mips: switch to generic compat sched_rr_get_interval()Al Viro2013-02-031-1/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | mips: switch to generic compat rt_sigqueueinfo()Al Viro2013-02-031-1/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | mips: switch to generic compat rt_sigpending()Al Viro2013-02-031-1/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | mips: switch to generic compat rt_sigprocmask()Al Viro2013-02-031-1/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | switch mips to generic rt_sigsuspend(), make it unconditionalAl Viro2013-02-031-1/+1
| | | | | | | | | | | | | | | | mips was the last architecture not using the generic variant. Both native and compat variants switched to generic, which is made unconditional now. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | mips: switch to compat_sys_waitid()Al Viro2013-02-031-1/+1
| | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | mips: switch to generic sigaltstackAl Viro2013-02-031-1/+1
|/ | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* MIPS: Wire up finit_module syscall.Ralf Baechle2012-12-281-0/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Switch over to generic sys_execve and kernel_execve.Ralf Baechle2012-10-141-1/+1
| | | | | | | | This version contains a few updates by David Daney, in particular it's now using __builtin_frame_address() instead of asm() which depending on personal taste, is slightly more appealing. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Wire kcmp syscall.Ralf Baechle2012-09-261-0/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Merge the identical "return from syscall" per-ABI codeAl Viro2012-09-221-12/+1
| | | | | | | | No need to keep 4 copies of that stuff; merged and taken to entry.S, unused public symbols there killed off. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Hook up process_vm_readv and process_vm_writev system calls.David Daney2011-11-091-0/+2
| | | | | | | Signed-off-by: David Daney <david.daney@cavium.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2918/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Compat: Use 32-bit wrapper for compat_sys_futex.Yong Zhang2011-09-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | We can't trust userspace to pass signed-extend arguments. Not correctly sign-extended arguments to futex-wait result in architecturally undefined operation of 32-bit arithmetic instructions. For example, if 'val' is too big and bit-31 is 1, the caller may enter endless loop at: futex_wait_setup() { ... if (uval != val) { queue_unlock(q, *hb); ret = -EWOULDBLOCK; ... } Signed-off-by: Yong Zhang <yong.zhang@windriver.com> To: linux-mips@linux-mips.org To: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/2714/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* All Arch: remove linkage for sys_nfsservctl system callNeilBrown2011-08-261-1/+1
| | | | | | | | | The nfsservctl system call is now gone, so we should remove all linkage for it. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* MIPS: Wire up sendmmsg and renumber setns syscall.Ralf Baechle2011-07-201-0/+1
| | | | | | | | | | Renumbering was necessary because I had already wired up setns(2) in the linux-mips.org tree in commit c3fce54644cabbb90700cc3acc040718a377f609 [MIPS: Wire up new sendmmsg syscall.] but the same syscall numbers were used by 7b21fddd087678a70ad64afc0f632e0f1071b092 [ns: Wire up the setns system call] resulting in a conflict. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* ns: Wire up the setns system callEric W. Biederman2011-05-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 32bit and 64bit on x86 are tested and working. The rest I have looked at closely and I can't find any problems. setns is an easy system call to wire up. It just takes two ints so I don't expect any weird architecture porting problems. While doing this I have noticed that we have some architectures that are very slow to get new system calls. cris seems to be the slowest where the last system calls wired up were preadv and pwritev. avr32 is weird in that recvmmsg was wired up but never declared in unistd.h. frv is behind with perf_event_open being the last syscall wired up. On h8300 the last system call wired up was epoll_wait. On m32r the last system call wired up was fallocate. mn10300 has recvmmsg as the last system call wired up. The rest seem to at least have syncfs wired up which was new in the 2.6.39. v2: Most of the architecture support added by Daniel Lezcano <dlezcano@fr.ibm.com> v3: ported to v2.6.36-rc4 by: Eric W. Biederman <ebiederm@xmission.com> v4: Moved wiring up of the system call to another patch v5: ported to v2.6.39-rc6 v6: rebased onto parisc-next and net-next to avoid syscall conflicts. v7: ported to Linus's latest post 2.6.39 tree. >  arch/blackfin/include/asm/unistd.h     |    3 ++- >  arch/blackfin/mach-common/entry.S      |    1 + Acked-by: Mike Frysinger <vapier@gentoo.org> Oh - ia64 wiring looks good. Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* MIPS: Split do_syscall_trace into two functions.Ralf Baechle2011-05-191-2/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Document former use of timerfd(2) syscall number.Ralf Baechle2011-05-101-1/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Wire up syncfs(2).Ralf Baechle2011-03-251-0/+1
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Hook up name_to_handle_at, open_by_handle_at and clock_adjtime syscalls.David Daney2011-03-251-0/+3
| | | | | | | | | | | | | These system calls we recently added. 32-bit ABIs need compat handling for sys_clock_adjtime(). o32 also needs compat handling for sys_open_by_handle_at(); Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2165/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2010-10-201-3/+3
|\ | | | | | | | | | | | | | | | | * 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: MIPS: O32 compat/N32: Fix to use compat syscall wrappers for AIO syscalls. MAINTAINERS: Change list for ioc_serial to linux-serial. SERIAL: ioc3_serial: Return -ENOMEM on memory allocation failure MIPS: jz4740: Fix Kbuild Platform file. MIPS: Repair Kbuild make clean breakage.
| * MIPS: O32 compat/N32: Fix to use compat syscall wrappers for AIO syscalls.Michel Thebeau2010-10-191-3/+3
| | | | | | | | | | | | | | | | | | | | [Ralf: Michel's original patch only fixed N32; I replicated the same fix for O32.] Signed-off-by: Michel Thebeau <michel.thebeau@windriver.com> Cc: paul.gortmaker@windriver.com Cc: bruce.ashfield@windriver.com Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2010-10-181-4/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: MIPS: Enable ISA_DMA_API config to fix build failure MIPS: 32-bit: Fix build failure in asm/fcntl.h MIPS: Remove all generated vmlinuz* files on "make clean" MIPS: do_sigaltstack() expects userland pointers MIPS: Fix error values in case of bad_stack MIPS: Sanitize restart logics MIPS: secure_computing, syscall audit: syscall number should in r2, not r0. MIPS: Don't block signals if we'd failed to setup a sigframe
| * | MIPS: Fix error values in case of bad_stackAl Viro2010-10-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want EFAULT, not -<syscall number> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1699/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | MIPS: Sanitize restart logicsAl Viro2010-10-181-3/+4
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | Put the original syscall number into ->regs[0] when we leave syscall with error. Use it in restart logics. Everything else will have it 0 since we pass through SAVE_SOME on all the ways in. Note that in places like bad_stack and inllegal_syscall we leave it 0 - it's not restartable. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1698/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* / MIPS: Hookup fanotify_init, fanotify_mark, and prlimit64 syscalls.David Daney2010-10-041-1/+4
|/ | | | | | | Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1553/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* improve sys_newuname() for compat architecturesChristoph Hellwig2010-03-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | On an architecture that supports 32-bit compat we need to override the reported machine in uname with the 32-bit value. Instead of doing this separately in every architecture introduce a COMPAT_UTS_MACHINE define in <asm/compat.h> and apply it directly in sys_newuname(). Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: James Morris <jmorris@namei.org> Cc: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6Linus Torvalds2009-12-081-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1815 commits) mac80211: fix reorder buffer release iwmc3200wifi: Enable wimax core through module parameter iwmc3200wifi: Add wifi-wimax coexistence mode as a module parameter iwmc3200wifi: Coex table command does not expect a response iwmc3200wifi: Update wiwi priority table iwlwifi: driver version track kernel version iwlwifi: indicate uCode type when fail dump error/event log iwl3945: remove duplicated event logging code b43: fix two warnings ipw2100: fix rebooting hang with driver loaded cfg80211: indent regulatory messages with spaces iwmc3200wifi: fix NULL pointer dereference in pmkid update mac80211: Fix TX status reporting for injected data frames ath9k: enable 2GHz band only if the device supports it airo: Fix integer overflow warning rt2x00: Fix padding bug on L2PAD devices. WE: Fix set events not propagated b43legacy: avoid PPC fault during resume b43: avoid PPC fault during resume tcp: fix a timewait refcnt race ... Fix up conflicts due to sysctl cleanups (dead sysctl_check code and CTL_UNNUMBERED removed) in kernel/sysctl_check.c net/ipv4/sysctl_net_ipv4.c net/ipv6/addrconf.c net/sctp/sysctl.c
| * Merge branch 'master' of ↵David S. Miller2009-11-181-2/+2
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/sfc/sfe4001.c drivers/net/wireless/libertas/cmd.c drivers/staging/Kconfig drivers/staging/Makefile drivers/staging/rtl8187se/Kconfig drivers/staging/rtl8192e/Kconfig
| * | net: Introduce recvmmsg socket syscallArnaldo Carvalho de Melo2009-10-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Meaning receive multiple messages, reducing the number of syscalls and net stack entry/exit operations. Next patches will introduce mechanisms where protocols that want to optimize this operation will provide an unlocked_recvmsg operation. This takes into account comments made by: . Paul Moore: sock_recvmsg is called only for the first datagram, sock_recvmsg_nosec is used for the rest. . Caitlin Bestler: recvmmsg now has a struct timespec timeout, that works in the same fashion as the ppoll one. If the underlying protocol returns a datagram with MSG_OOB set, this will make recvmmsg return right away with as many datagrams (+ the OOB one) it has received so far. . Rémi Denis-Courmont & Steven Whitehouse: If we receive N < vlen datagrams and then recvmsg returns an error, recvmmsg will return the successfully received datagrams, store the error and return it in the next call. This paves the way for a subsequent optimization, sk_prot->unlocked_recvmsg, where we will be able to acquire the lock only at batch start and end, not at every underlying recvmsg call. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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