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2019-02-20drm/nouveau/disp/tu102: rename implementation from tu104Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2019-02-20drm/nouveau/fault/tu102: rename implementation from tu104Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2019-02-20drm/nouveau/bar/tu102: rename implementation from tu104Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2019-02-20drm/nouveau/mmu/tu102: rename implementation from tu104Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2019-02-20drm/nouveau/mc/tu102: rename implementation from tu104Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2019-02-20drm/nouveau/devinit/tu102: rename implementation from tu104Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2019-02-20drm/nouveau/volt/gf117: fix speedo readout registerIlia Mirkin
GF117 appears to use the same register as GK104 (but still with the general Fermi readout mechanism). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108980 Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2019-02-19tomoyo: Bump version.Tetsuo Handa
Update URLs and profile version. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.morris@microsoft.com>
2019-02-19sky2: Increase D3 delay againKai-Heng Feng
Another platform requires even longer delay to make the device work correctly after S3. So increase the delay to 300ms. BugLink: https://bugs.launchpad.net/bugs/1798921 Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-19ptp_qoriq: don't pass a large struct by value but instead pass it by referenceColin Ian King
Passing the struct ptp_clock_info caps by parameter is passing over 130 bytes of data by value on the stack. Optimize this by passing it by reference instead. Also shinks the object code size: Before: text data bss dec hex filename 12596 2160 64 14820 39e4 drivers/ptp/ptp_qoriq.o After: text data bss dec hex filename 12567 2160 64 14791 39c7 drivers/ptp/ptp_qoriq.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-19net/mlx5: E-Switch, Disable esw manager vport correctlyBodong Wang
When disabling vport, relevant vport configurations will be cleaned up. These cleanups should be done to the vports which had these configs applied at vport enablement. As esw manager vport didn't have such vport config applied, cleanup should not touch it. Fixes: de9e6a8136c5 ("net/mlx5: E-Switch, Properly refer to host PF vport as other vport") Signed-off-by: Bodong Wang <bodong@mellanox.com> Reported-by: Eli Britstein <elibr@mellanox.com> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5: E-Switch, Fix the warning on vport index out of rangeBodong Wang
When eswitch gets vport data structure, the index should not be out of the range of the vport array. Driver mistakenly used vport number to check the range. Fixes: 22b8ddc86bf4 ("net/mlx5: E-Switch, Assign a different position for uplink rep and vport") Signed-off-by: Bodong Wang <bodong@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5e: Remove unused variable ‘esw’Saeed Mahameed
Fix the following compiler warning: drivers/net/ethernet/mellanox/mlx5/core/en_tc.c:2770: warning: unused variable ‘esw’ [-Wunused-variable] Fixes: 1cd3ab86b713 ("net/mlx5e: Introduce mlx5e_flow_esw_attr_init() helper") Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5: Delete unused FPGA QPN variableLeon Romanovsky
fpga_qpn was assigned but never used and compilation with W=1 produced the following warning: drivers/net/ethernet/mellanox/mlx5/core/fpga/core.c: In function _mlx5_fpga_event_: drivers/net/ethernet/mellanox/mlx5/core/fpga/core.c:320:6: warning: variable _fpga_qpn_ set but not used [-Wunused-but-set-variable] u32 fpga_qpn; ^~~~~~~~ Fixes: 98db16bab59f ("net/mlx5: FPGA, Handle QP error event") Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5e: Add missing static function annotationLeon Romanovsky
Compilation with W=1 produces following warning: drivers/net/ethernet/mellanox/mlx5/core/en/monitor_stats.c:69:6: warning: no previous prototype for _mlx5e_monitor_counter_start_ [-Wmissing-prototypes] void mlx5e_monitor_counter_start(struct mlx5e_priv *priv) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ Avoid it by declaring mlx5e_monitor_counter_start() as a static function. Fixes: 5c7e8bbb0257 ("net/mlx5e: Use monitor counters for update stats") Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5e: Remove 'parse_attr' argument in mlx5e_tc_add_fdb_flow()Tonghao Zhang
This patch is a little improvement. Simplify the mlx5e_tc_add_fdb_flow(). Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5e: Introduce mlx5e_flow_esw_attr_init() helperTonghao Zhang
Introduce the mlx5e_flow_esw_attr_init() helper for simplifying codes. Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5e: Remove wrong and superfluous tc pedit header type checkVlad Buslov
With recent introduction of flow_rule infrastructure drivers no longer directly include action headers, so it is no longer possible to use constants defined in them. Instead, one of flow_rule patches substituted pedit action header constant with hardcoded value '2' in mlx5 set_pedit_val() function conditional which verifies that header type is in range of values allowed by pedit action. That conditional is now both wrong (hardcoded value is '2' but __PEDIT_HDR_TYPE_MAX is 6 in current version) and superfluous (pedit action already verifies that header type is in allowed range during init). Remove the described check from mlx5 code. Fixes: 738678817573 ("drivers: net: use flow action infrastructure") Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Dmytro Linkin <dmitrolin@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5e: Wrap the open and apply of channels in one fail-safe functionTariq Toukan
Take into a function the common code structure of opening a side set of channels followed by a call to apply them. Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19net/mlx5: ethtool, Add ethtool support for 50Gbps per lane link modesAya Levin
In previous patch, driver added new speed modes: 50Gbps per lane support for 50G/100G/200G. This patch modifies mlx5e_get_link_ksettings and mlx5e_set_link_ksettings to set and get these link modes via ethtool. In order to do so, added mapping of new HW bits to ethtool bitmap and enforce mutual exclusion between extended link modes and previously defined link modes. Signed-off-by: Aya Levin <ayal@mellanox.com> Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19ethtool: Added support for 50Gbps per lane link modesAya Levin
Added support for 50Gbps per lane link modes. Define various 50G, 100G and 200G link modes using it. Signed-off-by: Aya Levin <ayal@mellanox.com> Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-02-19Merge branch 'ieee802154-for-davem-2019-02-19' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan-next Stefan Schmidt says: ==================== pull-request: ieee802154-next 2019-02-19 An update from ieee802154 for *net-next* Another quite quite cycle in the ieee802154 subsystem. Peter did a rework of the IP frag queue handling to make it use rbtree and get in line with the core IPv4 and IPv6 implementatiosn in the kernel. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-19net: ns83820: code cleanup for ns83820_probe_phy()Mao Wenan
This patch is to do code cleanup for ns83820_probe_phy(). It deletes unused variable 'first', commented out code, and the pointless 'for' loop. Signed-off-by: Mao Wenan <maowenan@huawei.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-19riscv: remove the HAVE_KPROBES optionChristoph Hellwig
HAVE_KPROBES is defined genericly in arch/Kconfig and architectures should just select it if supported. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-02-19net: rose: add missing dev_put() on error in rose_bindYueHaibing
when capable check failed, dev_put should be call before return -EACCES. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-19ALSA: ppc: Fix of-node refcount unbalanceTakashi Iwai
We forgot to unreference the node when aborting from the loop of for_each_child_of_node() in snd_pmac_tumbler_init(). This leads to unbalanced node refcount. Fix it by adding the missing of_node_put() call. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-02-19ALSA: aoa: Fix of-node refcount unbalanceTakashi Iwai
We forgot to unreference a node obtained via of_find_node_by_name() after its usage. Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-02-19ALSA: ac97: Fix of-node refcount unbalanceTakashi Iwai
ac97_of_get_child_device() take the refcount of the node explicitly via of_node_get(), but this leads to an unbalance. The for_each_child_of_node() loop itself takes the refcount for each iteration node, hence you don't need to take the extra refcount again. Fixes: 2225a3e6af78 ("ALSA: ac97: add codecs devicetree binding") Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-02-19net: dsa: qca8k: Enable delay for RGMII_ID modeVinod Koul
RGMII_ID specifies that we should have internal delay, so resurrect the delay addition routine but under the RGMII_ID mode. Fixes: 40269aa9f40a ("net: dsa: qca8k: disable delay for RGMII mode") Tested-by: Michal Vokáč <michal.vokac@ysoft.com> Signed-off-by: Vinod Koul <vkoul@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-19vhost: correctly check the return value of translate_desc() in log_used()Jason Wang
When fail, translate_desc() returns negative value, otherwise the number of iovs. So we should fail when the return value is negative instead of a blindly check against zero. Detected by CoverityScan, CID# 1442593: Control flow issues (DEADCODE) Fixes: cc5e71075947 ("vhost: log dirty page correctly") Acked-by: Michael S. Tsirkin <mst@redhat.com> Reported-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-19soc: fsl: dpio: fix memory leak of a struct qbman on error exit pathColin Ian King
Currently the error check for a null reg leaks a struct qbman that was allocated earlier. Fix this by kfree'ing p on the error exit path. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2019-02-19drm/amdgpu: partial revert cleanup setting bulk_movable v2Christian König
We still need to set bulk_movable to false when new BOs are added or removed. v2: also set it to false on removal Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: StDenis, Tom <Tom.StDenis@amd.com> Tested-by: Przemek Socha <soprwa@gmail.com> Reviewed-by: Zhou, David(ChunMing) <David1.Zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amdgpu: cleanup setting bulk_movableChristian König
We only need to set this to false now when BOs are removed from the LRU. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Chunming Zhou <david1.zhou@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/powerplay/smu10_hwmgr: use struct_size() in kzalloc()Gustavo A. R. Silva
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; struct boo entry[]; }; size = sizeof(struct foo) + count * sizeof(struct boo); instance = kzalloc(size, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL); Notice that, in this case, variable table_size is not necessary, hence it is removed. This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/powerplay/smu8_hwmgr: use struct_size() in kzalloc()Gustavo A. R. Silva
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; struct boo entry[]; }; size = sizeof(struct foo) + count * sizeof(struct boo); instance = kzalloc(size, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL); Notice that, in this case, variable table_size is not necessary, hence it is removed. This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: Refactor for setup periodic interrupt.Yongqiang Sun
[Why] Current periodic interrupt start point calc in optc is not clear. [How] 1. DM convert delta time to lines number and dc will calculate the start position as per lines number and interrupt type. 2. hwss calculates the start point as per line offset. 3. optc programs vertical interrupts register as per start point and interrupt source. Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: Clear stream->mode_changed after commitNicholas Kazlauskas
[Why] The stream->mode_changed flag can persist in the following sequence of atomic commits: Commit 1: Enable CRTC0 (mode_changed = true), Enable CRTC1 (mode_changed = true) Commit 2: Disable CRTC1 (mode_changed = false) In this sequence we want to keep the exiting CRTC0 but it's not in the atomic state for the commit since it hasn't been modified. In this case the stream->mode_changed flag persists as true and we don't re-program the planes for the existing stream. [How] The flag needs to be cleared and it makes the most sense to do it within DC after the state has been committed. Nothing following dc_commit_state should think that the stream's mode has changed. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: Leo Li <sunpeng.li@amd.com> Acked-by: Tony Cheng <Tony.Cheng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: Do cursor updates after stream updatesNicholas Kazlauskas
[Why] Cursor updates used to happen after vblank/flip/stream updates before the stream update refactor. They now happen before stream updates which means that they're not going to be synced with fb changes and that they're going to programmed for pipes that we're disabling within the same commit. [How] Move them after stream updates. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: David Francis <David.Francis@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: Fix update type mismatches in atomic checkNicholas Kazlauskas
[Why] Whenever a stream or plane is added or removed from the context the pointer will change from old to new. We set lock and validation needed in these cases. But not all of these cases match update_type from dm_determine_update_type_for_commit - an example being overlay plane updates. There are warnings for a few of these cases that should be fixed. [How] We can closer align to DC (and lock_and_validation_needed) by comparing stream and plane pointers. Since the old stream/old plane state is never freed until sometime after the commit tail work finishes we are guaranteed to never get back the same block of memory when we remove and create a stream or plane state in the same commit. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: Don't expose support for DRM_FORMAT_RGB888Nicholas Kazlauskas
[Why] This format isn't supported in DC and some IGT tests fail since we expose support for it. [How] Remove it. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Reviewed-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: Fix wrong z-order when updating overlay planesNicholas Kazlauskas
[Why] If a commit updates an overlay plane via the legacy plane IOCTL then the only plane in the state will be the overlay plane. Overlay planes need to be added first to the DC context, but in the scenario above the plane will be added last. This will result in wrong z-order during rendering. [How] If any non-cursor plane has been updated then the rest of the non-cursor planes should be added to the CRTC state. The cursor plane doesn't need to be included for stream updates and locking it will cause performance issues. It should be ignored. DC requires that the surface count passed during stream updates be the number of surfaces currently on the stream to enable fast updates. This previously wasn't the case without this patch, so this also allows this optimization to occur. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: Leo Li <sunpeng.li@amd.com> Acked-by: Tony Cheng <Tony.Cheng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: send pipe set command to dmcu when backlight is setJosip Pavic
[Why] Previously, a change removed code that would send a pipe set command to dmcu each time the backlight was set, as it was thought to be superfluous. However, it is possible for the backlight to be set before a valid pipe has been set, which causes DMCU to hang after a DPMS restore on some systems. [How] Send a pipe set command to DMCU prior to setting the backlight. Signed-off-by: Josip Pavic <Josip.Pavic@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: Ungate stream before programming registersGary Kattan
[Why] Certain tests fail after a fresh reboot. This is caused by writing to registers prior to ungating the stream we're trying to program. [How] Make sure the stream is ungated before writing to its registers. This also enables power-gating plane resources before init_hw initializes them. Additionally, this does some refactoring to move gating/ungating from enable/disable_plane functions to where stream resources are enabled/disabled. Signed-off-by: Gary Kattan <gary.kattan@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: Increase precision for backlight curveAnthony Koo
[Why] We are currently losing precision when we convert from 16 bit --> 8 bit --> 16 bit. [How] We shouldn't down convert unnecessarily and lose precision. Keep values at 16 bit and use directly. Signed-off-by: Anthony Koo <Anthony.Koo@amd.com> Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: remove screen flashes on seamless bootAnthony Koo
[Why] We want boot to desktop to be seamless [How] During init pipes, avoid touching the pipes where GOP has already enabled the HW to the state we want. Signed-off-by: Anthony Koo <Anthony.Koo@amd.com> Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19drm/amd/display: send pipe set command to dmcu when stream unblanksJosip Pavic
[Why] When stream is blanked, pipe set command is sent to dmcu to notify it that the abm pipe is disabled. When stream is unblanked, no notification is made to dmcu that the abm pipe has been enabled, resulting in abm not being enabled in the firmware. [How] When stream is unblanked, send a pipe set command to dmcu. Signed-off-by: Josip Pavic <Josip.Pavic@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19Revert "drm/amdgpu: Fix bugs in setting CP RB/MEC DOORBELL_RANGE registers"Yong Zhao
The original change caused a regression, so revert it until the new fix is ready. BUG: https://bugs.freedesktop.org/show_bug.cgi?id=109650 This reverts commit 764c85fef41722db0f21558c6c2fb38bee172d19. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19Revert "drm/amdgpu: Delete user queue doorbell variables"Yong Zhao
This reverts commit 9006c6bd9059cb9807fa863bafc1d776222cb61b. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-02-19bpf: add skb->queue_mapping write access from tc clsactJesper Dangaard Brouer
The skb->queue_mapping already have read access, via __sk_buff->queue_mapping. This patch allow BPF tc qdisc clsact write access to the queue_mapping via tc_cls_act_is_valid_access. Also handle that the value NO_QUEUE_MAPPING is not allowed. It is already possible to change this via TC filter action skbedit tc-skbedit(8). Due to the lack of TC examples, lets show one: # tc qdisc add dev ixgbe1 clsact # tc filter add dev ixgbe1 ingress matchall action skbedit queue_mapping 5 # tc filter list dev ixgbe1 ingress The most common mistake is that XPS (Transmit Packet Steering) takes precedence over setting skb->queue_mapping. XPS is configured per DEVICE via /sys/class/net/DEVICE/queues/tx-*/xps_cpus via a CPU hex mask. To disable set mask=00. The purpose of changing skb->queue_mapping is to influence the selection of the net_device "txq" (struct netdev_queue), which influence selection of the qdisc "root_lock" (via txq->qdisc->q.lock) and txq->_xmit_lock. When using the MQ qdisc the txq->qdisc points to different qdiscs and associated locks, and HARD_TX_LOCK (txq->_xmit_lock), allowing for CPU scalability. Due to lack of TC examples, lets show howto attach clsact BPF programs: # tc qdisc add dev ixgbe2 clsact # tc filter add dev ixgbe2 egress bpf da obj XXX_kern.o sec tc_qmap2cpu # tc filter list dev ixgbe2 egress Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-02-19bpf: check that BPF programs run with preemption disabledPeter Zijlstra
Introduce cant_sleep() macro for annotation of functions that cannot sleep. Use it in BPF_PROG_RUN to catch execution of BPF programs in preemptable context. Suggested-by: Jann Horn <jannh@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>