Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Jesper Dangaard Brouer 6710e11269 bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP ... The 'cpumap' is primarily used as a backend map for XDP BPF helper call bpf_redirect_map() and XDP_REDIRECT action, like 'devmap'. This patch implement the main part of the map. It is not connected to the XDP redirect system yet, and no SKB allocation are done yet. The main concern in this patch is to ensure the datapath can run without any locking. This adds complexity to the setup and tear-down procedure, which assumptions are extra carefully documented in the code comments. V2: - make sure array isn't larger than NR_CPUS - make sure CPUs added is a valid possible CPU V3: fix nitpicks from Jakub Kicinski <kubakici@wp.pl> V5: - Restrict map allocation to root / CAP_SYS_ADMIN - WARN_ON_ONCE if queue is not empty on tear-down - Return -EPERM on memlock limit instead of -ENOMEM - Error code in __cpu_map_entry_alloc() also handle ptr_ring_cleanup() - Moved cpu_map_enqueue() to next patch V6: all notice by Daniel Borkmann - Fix err return code in cpu_map_alloc() introduced in V5 - Move cpu_possible() check after max_entries boundary check - Forbid usage initially in check_map_func_compatibility() V7: - Fix alloc error path spotted by Daniel Borkmann - Did stress test adding+removing CPUs from the map concurrently - Fixed refcnt issue on cpu_map_entry, kthread started too soon - Make sure packets are flushed during tear-down, involved use of rcu_barrier() and kthread_run only exit after queue is empty - Fix alloc error path in __cpu_map_entry_alloc() for ptr_ring V8: - Nitpicking comments and gramma by Edward Cree - Fix missing semi-colon introduced in V7 due to rebasing - Move struct bpf_cpu_map_entry members cpu+map_id to tracepoint patch Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-10-18 12:12:18 +01:00
..
bpf	bpf: introduce new bpf cpu map type BPF_MAP_TYPE_CPUMAP	2017-10-18 12:12:18 +01:00
cgroup	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-10-05 18:19:22 -07:00
configs	ANDROID: binder: add hwbinder,vndbinder to BINDER_DEVICES.	2017-08-22 18:43:23 -07:00
debug
events	bpf: perf event change needed for subsequent bpf helpers	2017-10-07 23:05:57 +01:00
gcov	gcov: support GCC 7.1	2017-05-12 15:57:15 -07:00
irq	irq/generic-chip: Don't replace domain's name	2017-09-28 12:18:59 +02:00
livepatch	livepatch: Fix stacking of patches with respect to RCU	2017-06-20 10:42:19 +02:00
locking	locking/rwsem-xadd: Fix missed wakeup due to reordering of load	2017-09-29 10:10:20 +02:00
power	PM / s2idle: Invoke the ->wake() platform callback earlier	2017-09-29 01:26:13 +02:00
printk	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk	2017-09-07 21:00:52 -07:00
rcu	Two updates.	2017-10-04 08:34:01 -07:00
sched	sched/debug: Ignore TASK_IDLE for SysRq-W	2017-09-29 11:02:57 +02:00
time	drivers/pps: aesthetic tweaks to PPS-related content	2017-09-08 18:26:51 -07:00
trace	bpf: add helper bpf_perf_prog_read_value	2017-10-07 23:05:57 +01:00
.gitignore
acct.c	fs: make the buf argument to __kernel_write a void pointer	2017-09-04 19:05:15 -04:00
async.c	async: Adjust system_state checks	2017-05-23 10:01:37 +02:00
audit.c	audit: update the function comments	2017-09-05 09:46:59 -04:00
audit.h	ipc: mqueue: Replace timespec with timespec64	2017-09-03 20:21:24 -04:00
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit/stable-4.13 PR 20170816	2017-08-16 16:48:34 -07:00
auditfilter.c
auditsc.c	Merge branch 'work.ipc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-09-14 17:37:26 -07:00
backtracetest.c
bounds.c
capability.c
compat.c	semtimedop(): move compat to native	2017-07-15 20:46:47 -04:00
configs.c
context_tracking.c
cpu.c	Merge branch 'core-watchdog-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-10-06 08:36:41 -07:00
cpu_pm.c	PM / CPU: replace raw_notifier with atomic_notifier	2017-07-31 13:09:49 +02:00
crash_core.c	kdump: protect vmcoreinfo data under the crash memory	2017-07-12 16:26:00 -07:00
crash_dump.c
cred.c	doc: ReSTify credentials.txt	2017-05-18 10:30:19 -06:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	fix infoleak in waitid(2)	2017-09-29 13:43:15 -04:00
extable.c	extable: Enable RCU if it is not watching in kernel_text_address()	2017-09-23 16:50:20 -04:00
fork.c	android: binder: drop lru lock in isolate callback	2017-10-03 17:54:24 -07:00
freezer.c
futex.c	futex: Fix pi_state->owner serialization	2017-09-25 16:37:11 +02:00
futex_compat.c
groups.c	kernel/groups.c: use sort library function	2017-07-10 16:32:34 -07:00
hung_task.c	kernel/hung_task.c: defer showing held locks	2017-05-08 17:15:10 -07:00
irq_work.c
jump_label.c	jump_label: Provide hotplug context variants	2017-08-10 12:28:59 +02:00
kallsyms.c	kernel/kallsyms.c: replace all_var with IS_ENABLED(CONFIG_KALLSYMS_ALL)	2017-07-10 16:32:34 -07:00
kcmp.c	kernel/kcmp.c: drop branch leftover typo	2017-10-03 17:54:25 -07:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kcov: support compat processes	2017-09-08 18:26:51 -07:00
kexec.c	kdump: protect vmcoreinfo data under the crash memory	2017-07-12 16:26:00 -07:00
kexec_core.c	x86/mm, kexec: Allow kexec to be used with SME	2017-07-18 11:38:04 +02:00
kexec_file.c	kexec_file: adjust declaration of kexec_purgatory	2017-07-12 16:26:02 -07:00
kexec_internal.h	kexec_file: adjust declaration of kexec_purgatory	2017-07-12 16:26:02 -07:00
kmod.c	kmod: move #ifdef CONFIG_MODULES wrapper to Makefile	2017-09-08 18:26:51 -07:00
kprobes.c	kprobes: Ensure that jprobe probepoints are at function entry	2017-07-08 11:05:35 +02:00
ksysfs.c	kexec: move vmcoreinfo out of the kernel's .bss section	2017-07-12 16:25:59 -07:00
kthread.c	kernel/kthread.c: kthread_worker: don't hog the cpu	2017-08-31 16:33:15 -07:00
latencytop.c
Makefile	kmod: move #ifdef CONFIG_MODULES wrapper to Makefile	2017-09-08 18:26:51 -07:00
memremap.c	memremap: add scheduling point to devm_memremap_pages	2017-10-03 17:54:25 -07:00
module-internal.h
module.c	module: fix ddebug_remove_module()	2017-07-25 15:08:32 +02:00
module_signing.c
notifier.c
nsproxy.c
padata.c	padata: Avoid nested calls to cpus_read_lock() in pcrypt_init_padata()	2017-05-26 10:10:37 +02:00
panic.c	locking/refcounts, x86/asm: Implement fast refcount overflow protection	2017-08-17 10:40:26 +02:00
params.c	kernel/params.c: improve STANDARD_PARAM_DEF readability	2017-10-03 17:54:26 -07:00
pid.c	pids: make task_tgid_nr_ns() safe	2017-08-21 12:47:31 -07:00
pid_namespace.c	userns,pidns: Verify the userns for new pid namespaces	2017-07-20 07:43:58 -05:00
profile.c
ptrace.c	signal: Remove kernel interal si_code magic	2017-07-24 14:30:28 -05:00
range.c
reboot.c
relay.c
resource.c
seccomp.c	seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter()	2017-09-27 22:51:12 -07:00
signal.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2017-09-11 18:34:47 -07:00
smp.c	treewide: make "nr_cpu_ids" unsigned	2017-09-08 18:26:48 -07:00
smpboot.c	watchdog/core, powerpc: Lock cpus across reconfiguration	2017-10-04 10:53:54 +02:00
smpboot.h
softirq.c
stacktrace.c
stop_machine.c	stop_machine: Provide stop_machine_cpuslocked()	2017-05-26 10:10:36 +02:00
sys.c	prctl: Allow local CAP_SYS_ADMIN changing exe_file	2017-07-20 07:46:07 -05:00
sys_ni.c
sysctl.c	Merge branch 'core-watchdog-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-10-06 08:36:41 -07:00
sysctl_binary.c	fs: fix kernel_write prototype	2017-09-04 19:05:15 -04:00
task_work.c	task_work: Replace spin_unlock_wait() with lock/unlock pair	2017-07-25 10:08:58 -07:00
taskstats.c	taskstats: add e/u/stime for TGID command	2017-05-08 17:15:12 -07:00
test_kprobes.c
torture.c	torture: Fix typo suppressing CPU-hotplug statistics	2017-07-25 13:04:45 -07:00
tracepoint.c
tsacct.c
ucount.c
uid16.c
umh.c	kmod: split out umh code into its own file	2017-09-08 18:26:50 -07:00
up.c	smp: Avoid using two cache lines for struct call_single_data	2017-08-29 15:14:38 +02:00
user-return-notifier.c
user.c
user_namespace.c	userns,pidns: Verify the userns for new pid namespaces	2017-07-20 07:43:58 -05:00
utsname.c
utsname_sysctl.c
watchdog.c	watchdog/core: Put softlockup_threads_initialized under ifdef guard	2017-10-04 11:30:50 +02:00
watchdog_hld.c	watchdog/hardlockup/perf: Fix spelling mistake: "permanetely" -> "permanently"	2017-09-28 12:24:54 +02:00
workqueue.c	Merge branch 'for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2017-09-06 21:59:31 -07:00
workqueue_internal.h