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2018-10-11mac80211: minstrel: do not sample rates 3 times slower than max_prob_rateFelix Fietkau
These rates are highly unlikely to be used quickly, even if the link deteriorates rapidly. This improves throughput in cases where CCK rates are not reliable enough to be skipped entirely during sampling. Sampling these rates regularly can cost a lot of airtime. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11mac80211: minstrel: fix sampling/reporting of CCK rates in HT modeFelix Fietkau
Long/short preamble selection cannot be sampled separately, since it depends on the BSS state. Because of that, sampling attempts to currently not used preamble modes are not counted in the statistics, which leads to CCK rates being sampled too often. Fix statistics accounting for long/short preamble by increasing the index where necessary. Fix excessive CCK rate sampling by dropping unsupported sample attempts. This improves throughput on 2.4 GHz channels Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11mac80211: minstrel: fix CCK rate group streams valueFelix Fietkau
Fixes a harmless underflow issue when CCK rates are actively being used Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11mac80211: minstrel: fix using short preamble CCK rates on HT clientsFelix Fietkau
mi->supported[MINSTREL_CCK_GROUP] needs to be updated short preamble rates need to be marked as supported regardless of whether it's currently enabled. Its state can change at any time without a rate_update call. Fixes: 782dda00ab8e ("mac80211: minstrel_ht: move short preamble check out of get_rate") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11mac80211: minstrel: reduce minstrel_mcs_groups sizeFelix Fietkau
By storing a shift value for all duration values of a group, we can reduce precision by a neglegible amount to make it fit into a u16 value. This improves cache footprint and reduces size: Before: text data bss dec hex filename 10024 116 0 10140 279c rc80211_minstrel_ht.o After: text data bss dec hex filename 9368 116 0 9484 250c rc80211_minstrel_ht.o Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11mac80211: minstrel: merge with minstrel_ht, always enable VHT supportFelix Fietkau
Legacy-only devices are not very common and the overhead of the extra code for HT and VHT rates is not big enough to justify all those extra lines of code to make it optional. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11mac80211: minstrel: remove unnecessary debugfs cleanup codeFelix Fietkau
debugfs entries are cleaned up by debugfs_remove_recursive already. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11mac80211: minstrel: Enable STBC and LDPC for VHT RatesChaitanya T K
If peer support reception of STBC and LDPC, enable them for better performance. Signed-off-by: Chaitanya TK <chaitanya.mgit@gmail.com> Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11mac80211: avoid reflecting frames back to the clientJohannes Berg
I'm not really sure exactly _why_ I've been carrying a note for what's probably _years_ to check that we don't do this, but we clearly do reflect frames back to the station itself if it sends such. One way or the other, it's useless since the station doesn't really need the AP to talk to itself, so suppress it. While at it, clarify some of the logic by removing skb->data references in favour of the destination address (pointer) we already have separately. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11nl80211: use netlink policy validation function for elementsJohannes Berg
Instead of open-coding a lot of calls to is_valid_ie_attr(), add this validation directly to the policy, now that we can. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11nl80211: use policy range validation where applicableJohannes Berg
Many range checks can be done in the policy, move them there. A few in mesh are added in the code (taken out of the macros) because they don't fit into the s16 range in the policy validation. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-10-11spi: bcm-qspi: switch back to reading flash using smaller chunksRafał Miłecki
Fixing/optimizing bcm_qspi_bspi_read() performance introduced two changes: 1) It added a loop to read all requested data using multiple BSPI ops. 2) It bumped max size of a single BSPI block request from 256 to 512 B. The later change resulted in occasional BSPI timeouts causing a regression. For some unknown reason hardware doesn't always handle reads as expected when using 512 B chunks. In such cases it may happen that BSPI returns amount of requested bytes without the last 1-3 ones. It provides the remaining bytes later but doesn't raise an interrupt until another LR start. Switching back to 256 B reads fixes that problem and regression. Fixes: 345309fa7c0c ("spi: bcm-qspi: Fix bcm_qspi_bspi_read() performance") Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2018-10-11spi: bcm-qspi: fix calculation of address lengthRafał Miłecki
During implementation of the new API bcm_qspi_bspi_set_flex_mode() has been modified breaking calculation of address length. An unnecessary multiplication was added breaking flash reads. Fixes: 5f195ee7d830 ("spi: bcm-qspi: Implement the spi_mem interface") Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2018-10-11HID: wacom: Work around HID descriptor bug in DTK-2451 and DTH-2452Jason Gerecke
The DTK-2451 and DTH-2452 have a buggy HID descriptor which incorrectly contains a Cintiq-like report, complete with pen tilt, rotation, twist, serial number, etc. The hardware doesn't actually support this data but our driver duitifully sets up the device as though it does. To ensure userspace has a correct view of devices without updated firmware, we clean up this incorrect data in wacom_setup_device_quirks. We're also careful to clear the WACOM_QUIRK_TOOLSERIAL flag since its presence causes the driver to wait for serial number information (via wacom_wac_pen_serial_enforce) that never comes, resulting in the pen being non-responsive. Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Fixes: 8341720642 ("HID: wacom: Queue events with missing type/serial data for later processing") Cc: stable@vger.kernel.org # v4.16+ Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2018-10-11xfrm: policy: use hlist rcu variants on insertFlorian Westphal
bydst table/list lookups use rcu, so insertions must use rcu versions. Fixes: a7c44247f704e ("xfrm: policy: make xfrm_policy_lookup_bytype lockless") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2018-10-11net/xfrm: fix out-of-bounds packet accessAlexei Starovoitov
BUG: KASAN: slab-out-of-bounds in _decode_session6+0x1331/0x14e0 net/ipv6/xfrm6_policy.c:161 Read of size 1 at addr ffff8801d882eec7 by task syz-executor1/6667 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x30d mm/kasan/report.c:412 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430 _decode_session6+0x1331/0x14e0 net/ipv6/xfrm6_policy.c:161 __xfrm_decode_session+0x71/0x140 net/xfrm/xfrm_policy.c:2299 xfrm_decode_session include/net/xfrm.h:1232 [inline] vti6_tnl_xmit+0x3c3/0x1bc1 net/ipv6/ip6_vti.c:542 __netdev_start_xmit include/linux/netdevice.h:4313 [inline] netdev_start_xmit include/linux/netdevice.h:4322 [inline] xmit_one net/core/dev.c:3217 [inline] dev_hard_start_xmit+0x272/0xc10 net/core/dev.c:3233 __dev_queue_xmit+0x2ab2/0x3870 net/core/dev.c:3803 dev_queue_xmit+0x17/0x20 net/core/dev.c:3836 Reported-by: syzbot+acffccec848dc13fe459@syzkaller.appspotmail.com Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2018-10-11sched/fair: Fix throttle_list starvation with low CFS quotaPhil Auld
With a very low cpu.cfs_quota_us setting, such as the minimum of 1000, distribute_cfs_runtime may not empty the throttled_list before it runs out of runtime to distribute. In that case, due to the change from c06f04c7048 to put throttled entries at the head of the list, later entries on the list will starve. Essentially, the same X processes will get pulled off the list, given CPU time and then, when expired, get put back on the head of the list where distribute_cfs_runtime will give runtime to the same set of processes leaving the rest. Fix the issue by setting a bit in struct cfs_bandwidth when distribute_cfs_runtime is running, so that the code in throttle_cfs_rq can decide to put the throttled entry on the tail or the head of the list. The bit is set/cleared by the callers of distribute_cfs_runtime while they hold cfs_bandwidth->lock. This is easy to reproduce with a handful of CPU consumers. I use 'crash' on the live system. In some cases you can simply look at the throttled list and see the later entries are not changing: crash> list cfs_rq.throttled_list -H 0xffff90b54f6ade40 -s cfs_rq.runtime_remaining | paste - - | awk '{print $1" "$4}' | pr -t -n3 1 ffff90b56cb2d200 -976050 2 ffff90b56cb2cc00 -484925 3 ffff90b56cb2bc00 -658814 4 ffff90b56cb2ba00 -275365 5 ffff90b166a45600 -135138 6 ffff90b56cb2da00 -282505 7 ffff90b56cb2e000 -148065 8 ffff90b56cb2fa00 -872591 9 ffff90b56cb2c000 -84687 10 ffff90b56cb2f000 -87237 11 ffff90b166a40a00 -164582 crash> list cfs_rq.throttled_list -H 0xffff90b54f6ade40 -s cfs_rq.runtime_remaining | paste - - | awk '{print $1" "$4}' | pr -t -n3 1 ffff90b56cb2d200 -994147 2 ffff90b56cb2cc00 -306051 3 ffff90b56cb2bc00 -961321 4 ffff90b56cb2ba00 -24490 5 ffff90b166a45600 -135138 6 ffff90b56cb2da00 -282505 7 ffff90b56cb2e000 -148065 8 ffff90b56cb2fa00 -872591 9 ffff90b56cb2c000 -84687 10 ffff90b56cb2f000 -87237 11 ffff90b166a40a00 -164582 Sometimes it is easier to see by finding a process getting starved and looking at the sched_info: crash> task ffff8eb765994500 sched_info PID: 7800 TASK: ffff8eb765994500 CPU: 16 COMMAND: "cputest" sched_info = { pcount = 8, run_delay = 697094208, last_arrival = 240260125039, last_queued = 240260327513 }, crash> task ffff8eb765994500 sched_info PID: 7800 TASK: ffff8eb765994500 CPU: 16 COMMAND: "cputest" sched_info = { pcount = 8, run_delay = 697094208, last_arrival = 240260125039, last_queued = 240260327513 }, Signed-off-by: Phil Auld <pauld@redhat.com> Reviewed-by: Ben Segall <bsegall@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Fixes: c06f04c70489 ("sched: Fix potential near-infinite distribute_cfs_runtime() loop") Link: http://lkml.kernel.org/r/20181008143639.GA4019@pauld.bos.csb Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-11Merge branch 'x86-urgent-for-linus' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Ingo writes: "x86 fixes An intel_rdt memory access fix and a VLA fix in pgd_alloc()." * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Avoid VLA in pgd_alloc() x86/intel_rdt: Fix out-of-bounds memory access in CBM tests
2018-10-11Merge branch 'sched-urgent-for-linus' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Ingo writes: "scheduler fix: Cleanup of dead code left over from the recent sched/numa fixes." * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: mm, sched/numa: Remove remaining traces of NUMA rate-limiting
2018-10-11Merge branch 'perf-urgent-for-linus' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Ingo, a man of few words, writes: "perf fixes: misc perf tooling fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf record: Use unmapped IP for inline callchain cursors perf python: Use -Wno-redundant-decls to build with PYTHON=python3 perf report: Don't try to map ip to invalid map perf script python: Fix export-to-sqlite.py sample columns perf script python: Fix export-to-postgresql.py occasional failure
2018-10-11misc: cxl: Fix possible null pointer dereferencezhong jiang
It is not safe to dereference an object before a null test. It is not needed and just remove them. Ftrace can be used instead. Signed-off-by: zhong jiang <zhongjiang@huawei.com> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11misc: mic: scif: remove redundant check on ret < 0Colin Ian King
The check for ret < 0 is redundant as any places prior to this point where ret is set to an error value the code will exit out of the loop to the error exit label 'err'. Remove this redundant dead code. Detected by CoverityScan, CID#1339528 ("Logically dead code") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Use memcat_p()Alexander Shishkin
Instead of a local copy, use the memcat_p() helper to merge policy node attributes. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11lib: Add memcat_p(): paste 2 pointer arrays togetherAlexander Shishkin
This adds a helper to paste 2 pointer arrays together, useful for merging various types of attribute arrays. There are a few places in the kernel tree where this is open coded, and I just added one more in the STM class. The naming is inspired by memset_p() and memcat(), and partial credit for it goes to Andy Shevchenko. This patch adds the function wrapped in a type-enforcing macro and a test module. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: heartbeat: Fix whitespaceAlexander Shishkin
Fix whitespace in the code for better readability, no functional changes. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: SPDX-ify the documentationAlexander Shishkin
Add the SPDX header to the STM class documentation. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Update documentation to match the new identification rulesAlexander Shishkin
The rules and order of identification of trace sources against the "stp-policy" have changed; update the documentation to reflect that. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Document the MIPI SyS-T protocol usageAlexander Shishkin
Add a document describing MIPI SyS-T protocol driver usage. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: p_sys-t: Document the configfs interfaceAlexander Shishkin
This adds ABI documentation for the new configfs attributes that come with the MIPI SyS-T protocol driver. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: p_sys-t: Add support for CLOCKSYNC packetsAlexander Shishkin
This adds support for CLOCKSYNC SyS-T packets, that establish correlation between the transport clock (STP timestamps) and SyS-T timestamps. These packets are sent periodically to allow the decoder to keep both time sources in sync. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Add MIPI SyS-T protocol supportAlexander Shishkin
This adds support for MIPI SyS-T protocol as specified in an open standard [1]. In addition to marking message boundaries, it also supports tagging messages with the source UUID, to provide better distinction between trace sources, including payload length and timestamp in the message's metadata. This driver adds attributes to STP policy nodes to control/configure these metadata features. [1] https://www.mipi.org/specifications/sys-t Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Switch over to the protocol driverAlexander Shishkin
Now that the default framing protocol is factored out into its own driver, switch over to using the driver for writing data. To that end, make the policy code require a valid protocol name (or absence thereof, which is equivalent to "p_basic"). Also, to make transition easier, make stm class request "p_basic" module at initialization time. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Factor out default framing protocolAlexander Shishkin
The STP framing pattern that the stm class implicitly applies to the data payload is, in fact, a protocol. This patch moves the relevant code out of the stm core into its own driver module. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Add a helper for writing data packetsAlexander Shishkin
Add a helper to write a sequence of bytes as STP data packets. This is used by protocol drivers to output their metadata, as well as the actual data payload. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Introduce framing protocol driversAlexander Shishkin
At the moment, the stm class applies a certain STP framing pattern to the data as it is written to the underlying STM device. In order to allow different framing patterns (aka protocols), this patch introduces the concept of STP protocol drivers, defines data structures and APIs for the protocol drivers to use. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Clean up stp_configfs_initAlexander Shishkin
Minor code shortening, no functional changes. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Clarify configfs root type/operations namesAlexander Shishkin
The current naming of stp-policy root type and group ops is confusing, rename them for better readability. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: Rework policy node fallbackAlexander Shishkin
Currently, if no matching policy node can be found for a trace source, we'll try to use "default" policy node, then, if that doesn't exist, we'll pick the first node, in order of creation. If that also fails, we'll allocate M/C range from the beginning of the device's M/C range. This makes it difficult to know which node (if any) was used in any particular case. In order to make things more deterministic, the new order is as follows: * if they supply ID string, use that and nothing else, * if they are a task, use their task name (comm), * use "default", if it exists, * return failure, to let them know there is no suitable rule. This should provide enough convenience with the "default" catch-all node, while not leaving *everything* to chance. As a side effect, this relaxes the requirement of using ioctl() for identification with the possibility of using task names as policy nodes. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11netfilter: nft_compat: do not dump private areaPablo Neira Ayuso
Zero pad private area, otherwise we expose private kernel pointer to userspace. This patch also zeroes the tail area after the ->matchsize and ->targetsize that results from XT_ALIGN(). Fixes: 0ca743a55991 ("netfilter: nf_tables: add compatibility layer for x_tables") Reported-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-10-11netfilter: xt_TEE: add missing code to get interface index in checkentry.Taehee Yoo
checkentry(tee_tg_check) should initialize priv->oif from dev if possible. But only netdevice notifier handler can set that. Hence priv->oif is always -1 until notifier handler is called. Fixes: 9e2f6c5d78db ("netfilter: Rework xt_TEE netdevice notifier") Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-10-11netfilter: xt_TEE: fix wrong interface selectionTaehee Yoo
TEE netdevice notifier handler checks only interface name. however each netns can have same interface name. hence other netns's interface could be selected. test commands: %ip netns add vm1 %iptables -I INPUT -p icmp -j TEE --gateway 192.168.1.1 --oif enp2s0 %ip link set enp2s0 netns vm1 Above rule is in the root netns. but that rule could get enp2s0 ifindex of vm1 by notifier handler. After this patch, TEE rule is added to the per-netns list. Fixes: 9e2f6c5d78db ("netfilter: Rework xt_TEE netdevice notifier") Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-10-11netfilter: nft_osf: usage from output path is not validFernando Fernandez Mancera
The nft_osf extension, like xt_osf, is not supported from the output path. Fixes: b96af92d6eaf ("netfilter: nf_tables: implement Passive OS fingerprint module in nft_osf") Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-10-11netfilter: nft_set_rbtree: allow loose matching of closing element in intervalPablo Neira Ayuso
Allow to find closest matching for the right side of an interval (end flag set on) so we allow lookups in inner ranges, eg. 10-20 in 5-25. Fixes: ba0e4d9917b4 ("netfilter: nf_tables: get set elements via netlink") Reported-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-10-11sched/completions/Documentation: Clean up the document some moreIngo Molnar
Refresh the document: - Remove unnecessary liguistic complexity and improve the clarity of the text - Improve the explanations all around - Remove unnecessary and stale version info - Fix whitespace noise - Make pseudo-code match kernel style - Fix minor syntax errors in pseudo-code - Use consistent denotation - Mark multi-CPU sequences more explicitly - Unbreak line breaks - Use quotes to refer to 'struct completion' - Use 'IRQ context' and 'IRQs' consistently - Improve grammar - etc. Cc: John Garry <john.garry@huawei.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Nicholas Mc Guire <hofrat@osadl.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: corbet@lwn.net Cc: linux-doc@vger.kernel.org Link: http://lkml.kernel.org/r/1539183392-239389-1-git-send-email-john.garry@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-11sched/completions/Documentation: Fix a couple of punctuation nitsJohn Garry
This patch fixes a couple of punctuation nits which can make the document more correct and readable. Also missing "()" are added to some function references for consistency. Signed-off-by: John Garry <john.garry@huawei.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: corbet@lwn.net Cc: linux-doc@vger.kernel.org Link: http://lkml.kernel.org/r/1539183392-239389-1-git-send-email-john.garry@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-10-11selftests: bpf: install script with_addr.shAnders Roxell
When test_flow_dissector.sh runs it complains that it can't find script with_addr.sh: ./test_flow_dissector.sh: line 81: ./with_addr.sh: No such file or directory Rework so that with_addr.sh gets installed, add it to TEST_PROGS_EXTENDED variable. Fixes: 50b3ed57dee9 ("selftests/bpf: test bpf flow dissection") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-11selftests: bpf: add config fragment LWTUNNELAnders Roxell
When test_lwt_seg6local.sh was added commit c99a84eac026 ("selftests/bpf: test for seg6local End.BPF action") config fragment wasn't added, and without CONFIG_LWTUNNEL enabled we see this: Error: CONFIG_LWTUNNEL is not enabled in this kernel. selftests: test_lwt_seg6local [FAILED] Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-11bpftool: Allow add linker flags via EXTRA_LDFLAGS variableJiri Olsa
Adding EXTRA_LDFLAGS allowing user to specify extra flags for LD_FLAGS variable. Also adding LDFLAGS to build command line. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-11bpftool: Allow to add compiler flags via EXTRA_CFLAGS variableJiri Olsa
Adding EXTRA_CFLAGS allowing user to specify extra flags for CFLAGS variable. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-10-11xsk: do not call synchronize_net() under RCU read lockBjörn Töpel
The XSKMAP update and delete functions called synchronize_net(), which can sleep. It is not allowed to sleep during an RCU read section. Instead we need to make sure that the sock sk_destruct (xsk_destruct) function is asynchronously called after an RCU grace period. Setting the SOCK_RCU_FREE flag for XDP sockets takes care of this. Fixes: fbfc504a24f5 ("bpf: introduce new bpf AF_XDP map type BPF_MAP_TYPE_XSKMAP") Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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