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2018-09-03mac80211: don't Tx a deauth frame if the AP forbade TxEmmanuel Grumbach
If the driver fails to properly prepare for the channel switch, mac80211 will disconnect. If the CSA IE had mode set to 1, it means that the clients are not allowed to send any Tx on the current channel, and that includes the deauthentication frame. Make sure that we don't send the deauthentication frame in this case. In iwlwifi, this caused a failure to flush queues since the firmware already closed the queues after having parsed the CSA IE. Then mac80211 would wait until the deauthentication frame would go out (drv_flush(drop=false)) and that would never happen. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-03mac80211: Fix station bandwidth setting after channel switchIlan Peer
When performing a channel switch flow for a managed interface, the flow did not update the bandwidth of the AP station and the rate scale algorithm. In case of a channel width downgrade, this would result with the rate scale algorithm using a bandwidth that does not match the interface channel configuration. Fix this by updating the AP station bandwidth and rate scaling algorithm before the actual channel change in case of a bandwidth downgrade, or after the actual channel change in case of a bandwidth upgrade. Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-03mac80211: fix a race between restart and CSA flowsEmmanuel Grumbach
We hit a problem with iwlwifi that was caused by a bug in mac80211. A bug in iwlwifi caused the firwmare to crash in certain cases in channel switch. Because of that bug, drv_pre_channel_switch would fail and trigger the restart flow. Now we had the hw restart worker which runs on the system's workqueue and the csa_connection_drop_work worker that runs on mac80211's workqueue that can run together. This is obviously problematic since the restart work wants to reconfigure the connection, while the csa_connection_drop_work worker does the exact opposite: it tries to disconnect. Fix this by cancelling the csa_connection_drop_work worker in the restart worker. Note that this can sound racy: we could have: driver iface_work CSA_work restart_work +++++++++++++++++++++++++++++++++++++++++++++ | <--drv_cs ---| <FW CRASH!> -CS FAILED--> | | | cancel_work(CSA) schedule | CSA work | | | Race between those 2 But this is not possible because we flush the workqueue in the restart worker before we cancel the CSA worker. That would be bullet proof if we could guarantee that we schedule the CSA worker only from the iface_work which runs on the workqueue (and not on the system's workqueue), but unfortunately we do have an instance in which we schedule the CSA work outside the context of the workqueue (ieee80211_chswitch_done). Note also that we should probably cancel other workers like beacon_connection_loss_work and possibly others for different types of interfaces, at the very least, IBSS should suffer from the exact same problem, but for now, do the minimum to fix the actual bug that was actually experienced and reproduced. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-03mac80211: fix WMM TXOP calculationDreyfuss, Haim
In commit 9236c4523e5b ("mac80211: limit wmm params to comply with ETSI requirements"), we have limited the WMM parameters to comply with 802.11 and ETSI standard. Mistakenly the TXOP value was caluclated wrong. Fix it by taking the minimum between 802.11 to ETSI to make sure we are not violating both. Fixes: e552af058148 ("mac80211: limit wmm params to comply with ETSI requirements") Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-09-03mac80211: fix an off-by-one issue in A-MSDU max_subframe computationLorenzo Bianconi
Initialize 'n' to 2 in order to take into account also the first packet in the estimation of max_subframe limit for a given A-MSDU since frag_tail pointer is NULL when ieee80211_amsdu_aggregate routine analyzes the second frame. Fixes: 6e0456b54545 ("mac80211: add A-MSDU tx support") Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-30mac80211: always account for A-MSDU header changesJohannes Berg
In the error path of changing the SKB headroom of the second A-MSDU subframe, we would not account for the already-changed length of the first frame that just got converted to be in A-MSDU format and thus is a bit longer now. Fix this by doing the necessary accounting. It would be possible to reorder the operations, but that would make the code more complex (to calculate the necessary pad), and the headroom expansion should not fail frequently enough to make that worthwhile. Fixes: 6e0456b54545 ("mac80211: add A-MSDU tx support") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-30mac80211: do not convert to A-MSDU if frag/subframe limitedLorenzo Bianconi
Do not start to aggregate packets in a A-MSDU frame (converting the first subframe to A-MSDU, adding the header) if max_tx_fragments or max_amsdu_subframes limits are already exceeded by it. In particular, this happens when drivers set the limit to 1 to avoid A-MSDUs at all. Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> [reword commit message to be more precise] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-29mac80211: avoid kernel panic when building AMSDU from non-linear SKBSara Sharon
When building building AMSDU from non-linear SKB, we hit a kernel panic when trying to push the padding to the tail. Instead, put the padding at the head of the next subframe. This also fixes the A-MSDU subframes to not have the padding accounted in the length field and not have pad at all for the last subframe, both required by the spec. Fixes: 6e0456b54545 ("mac80211: add A-MSDU tx support") Signed-off-by: Sara Sharon <sara.sharon@intel.com> Reviewed-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-29mac80211: mesh: fix HWMP sequence numbering to follow standardYuan-Chi Pang
IEEE 802.11-2016 14.10.8.3 HWMP sequence numbering says: If it is a target mesh STA, it shall update its own HWMP SN to maximum (current HWMP SN, target HWMP SN in the PREQ element) + 1 immediately before it generates a PREP element in response to a PREQ element. Signed-off-by: Yuan-Chi Pang <fu3mo6goo@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-29cfg80211: clarify frames covered by average ACK signal reportBalaji Pothunoori
Modify the API to include all ACK frames in average ACK signal strength reporting, not just ACKs for data frames. Make exposing the data conditional on implementing the extended feature flag. This is how it was really implemented in mac80211, update the code there to use the new defines and clean up some of the setting code. Keep nl80211.h source compatibility by keeping the old names. Signed-off-by: Balaji Pothunoori <bpothuno@codeaurora.org> [rewrite commit log, change compatibility to be old=new instead of the other way around, update kernel-doc, roll in mac80211 changes, make mac80211 depend on valid bit instead of HW flag] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-29mac80211: add missing WFA Multi-AP backhaul STA Rx requirementSathishkumar Muruganandam
The current mac80211 WDS (4-address mode) can be used to cover most of the Multi-AP requirements for Data frames per the WFA Multi-AP Specification v1.0. When configuring AP/STA interfaces in 4-address mode, they are able to function as fronthaul AP/backhaul STA of Multi-AP device complying below Tx, Rx requirements except one missing STA Rx requirement added by this patch. Multi-AP specification section 14.1 describes the following requirements: Transmitter requirements ------------------------ 1. Fronthaul AP i) When DA!=RA of backhaul STA, must use 4-address format ii) When DA==RA of backhaul STA, shall use either 3-address or 4-address format with RA updated with STA MAC (mac80211 support 4-address format via AP/VLAN interface) 2. Backhaul STA i) When SA!=TA of backhaul STA, must use 4-address format ii) When SA==TA of backhaul STA, shall use either 3-address or 4-address format with RA updated with AP MAC (mac80211 support 4-address format via use_4addr) Receiver requirements --------------------- 1. Fronthaul AP i) When SA!=TA of backhaul STA, must support receiving 4-address format frames ii) When SA==TA of backhaul STA, must support receiving both 3-address and 4-address format frames (mac80211 support both 3-addr & 4-addr via AP/VLAN interface) 2. Backhaul STA i) When DA!=RA of backhaul STA, must support receiving 4-address format frames ii) When DA==RA of backhaul STA, must support receiving both 3-address and 4-address format frames (mac80211 support only receiving 4-address format via use_4addr) This patch addresses the above Rx requirement (ii) for backhaul STA to receive unicast (DA==RA) 3-address frames in addition to 4-address frames. The current design doesn't accept 3-address frames when configured in 4-address mode (use_4addr). Hence add a check to allow 3-address frames when DA==RA of backhaul STA (adhering to Table 9-26 of IEEE Std 802.11™-2016). This case was tested with a bridged station interface when associated with a non-mac80211 based vendor AP implementation using 3-address frames for WDS. STA was able to support the Multi-AP Rx requirement when DA==RA. No issues, no loops seen when tested with mac80211 based AP as well. Verified and confirmed all other Tx and Rx requirements of AP and STA for Multi-AP respectively. They all work using the current mac80211-WDS design. Signed-off-by: Sathishkumar Muruganandam <murugana@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-28mac80211: add stop/start logic for software TXQsManikanta Pubbisetty
Sometimes, it is required to stop the transmissions momentarily and resume it later; stopping the txqs becomes very critical in scenarios where the packet transmission has to be ceased completely. For example, during the hardware restart, during off channel operations, when initiating CSA(upon detecting a radar on the DFS channel), etc. The TX queue stop/start logic in mac80211 works well in stopping the TX when drivers make use of netdev queues, i.e, when Qdiscs in network layer take care of traffic scheduling. Since the devices implementing wake_tx_queue can run without Qdiscs, packets will be handed to mac80211 directly without queueing them in the netdev queues. Also, mac80211 does not invoke any of the netif_stop_*/netif_wake_* APIs if wake_tx_queue is implemented. Since the queues are not stopped in this case, transmissions can continue and this will impact negatively on the operation of the wireless device. For example, During hardware restart, we stop the netdev queues so that packets are not sent to the driver. Since ath10k implements wake_tx_queue, TX queues will not be stopped and packets might reach the hardware while it is restarting; this can make hardware unresponsive and the only possible option for recovery is to reboot the entire system. There is another problem to this, it is observed that the packets were sent on the DFS channel for a prolonged duration after radar detection impacting the channel closing time. We can still invoke netif stop/wake APIs when wake_tx_queue is implemented but this could lead to packet drops in network layer; adding stop/start logic for software TXQs in mac80211 instead makes more sense; the change proposed adds the same in mac80211. Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-28cfg80211/mac80211: make ieee80211_send_layer2_update a public functionDedy Lansky
Make ieee80211_send_layer2_update() a common function so other drivers can re-use it. Signed-off-by: Dedy Lansky <dlansky@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-28mac80211: don't update the PM state of a peer upon a multicast frameEmmanuel Grumbach
I changed the way mac80211 updates the PM state of the peer. I forgot that we could also have multicast frames from the peer and that those frame should of course not change the PM state of the peer: A peer goes to power save when it needs to scan, but it won't send the broadcast Probe Request with the PM bit set. This made us mark the peer as awake when it wasn't and then Intel's firmware would fail to transmit because the peer is asleep according to its database. The driver warned about this and it looked like this: WARNING: CPU: 0 PID: 184 at /usr/src/linux-4.16.14/drivers/net/wireless/intel/iwlwifi/mvm/tx.c:1369 iwl_mvm_rx_tx_cmd+0x53b/0x860 CPU: 0 PID: 184 Comm: irq/124-iwlwifi Not tainted 4.16.14 #1 RIP: 0010:iwl_mvm_rx_tx_cmd+0x53b/0x860 Call Trace: iwl_pcie_rx_handle+0x220/0x880 iwl_pcie_irq_handler+0x6c9/0xa20 ? irq_forced_thread_fn+0x60/0x60 ? irq_thread_dtor+0x90/0x90 The relevant code that spits the WARNING is: case TX_STATUS_FAIL_DEST_PS: /* the FW should have stopped the queue and not * return this status */ WARN_ON(1); info->flags |= IEEE80211_TX_STAT_TX_FILTERED; This fixes https://bugzilla.kernel.org/show_bug.cgi?id=199967. Fixes: 9fef65443388 ("mac80211: always update the PM state of a peer on MGMT / DATA frames") Cc: <stable@vger.kernel.org> #4.16+ Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-28cfg80211: make wmm_rule part of the reg_rule structureStanislaw Gruszka
Make wmm_rule be part of the reg_rule structure. This simplifies the code a lot at the cost of having bigger memory usage. However in most cases we have only few reg_rule's and when we do have many like in iwlwifi we do not save memory as it allocates a separate wmm_rule for each channel anyway. This also fixes a bug reported in various places where somewhere the pointers were corrupted and we ended up doing a null-dereference. Fixes: 230ebaa189af ("cfg80211: read wmm rules from regulatory database") Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> [rephrase commit message slightly] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-28mac80211: correct use of IEEE80211_VHT_CAP_RXSTBC_XDanek Duvall
The mod mask for VHT capabilities intends to say that you can override the number of STBC receive streams, and it does, but only by accident. The IEEE80211_VHT_CAP_RXSTBC_X aren't bits to be set, but values (albeit left-shifted). ORing the bits together gets the right answer, but we should use the _MASK macro here instead. Signed-off-by: Danek Duvall <duvall@comfychair.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-08-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: "Highlights: - Gustavo A. R. Silva keeps working on the implicit switch fallthru changes. - Support 802.11ax High-Efficiency wireless in cfg80211 et al, From Luca Coelho. - Re-enable ASPM in r8169, from Kai-Heng Feng. - Add virtual XFRM interfaces, which avoids all of the limitations of existing IPSEC tunnels. From Steffen Klassert. - Convert GRO over to use a hash table, so that when we have many flows active we don't traverse a long list during accumluation. - Many new self tests for routing, TC, tunnels, etc. Too many contributors to mention them all, but I'm really happy to keep seeing this stuff. - Hardware timestamping support for dpaa_eth/fsl-fman from Yangbo Lu. - Lots of cleanups and fixes in L2TP code from Guillaume Nault. - Add IPSEC offload support to netdevsim, from Shannon Nelson. - Add support for slotting with non-uniform distribution to netem packet scheduler, from Yousuk Seung. - Add UDP GSO support to mlx5e, from Boris Pismenny. - Support offloading of Team LAG in NFP, from John Hurley. - Allow to configure TX queue selection based upon RX queue, from Amritha Nambiar. - Support ethtool ring size configuration in aquantia, from Anton Mikaev. - Support DSCP and flowlabel per-transport in SCTP, from Xin Long. - Support list based batching and stack traversal of SKBs, this is very exciting work. From Edward Cree. - Busyloop optimizations in vhost_net, from Toshiaki Makita. - Introduce the ETF qdisc, which allows time based transmissions. IGB can offload this in hardware. From Vinicius Costa Gomes. - Add parameter support to devlink, from Moshe Shemesh. - Several multiplication and division optimizations for BPF JIT in nfp driver, from Jiong Wang. - Lots of prepatory work to make more of the packet scheduler layer lockless, when possible, from Vlad Buslov. - Add ACK filter and NAT awareness to sch_cake packet scheduler, from Toke Høiland-Jørgensen. - Support regions and region snapshots in devlink, from Alex Vesker. - Allow to attach XDP programs to both HW and SW at the same time on a given device, with initial support in nfp. From Jakub Kicinski. - Add TLS RX offload and support in mlx5, from Ilya Lesokhin. - Use PHYLIB in r8169 driver, from Heiner Kallweit. - All sorts of changes to support Spectrum 2 in mlxsw driver, from Ido Schimmel. - PTP support in mv88e6xxx DSA driver, from Andrew Lunn. - Make TCP_USER_TIMEOUT socket option more accurate, from Jon Maxwell. - Support for templates in packet scheduler classifier, from Jiri Pirko. - IPV6 support in RDS, from Ka-Cheong Poon. - Native tproxy support in nf_tables, from Máté Eckl. - Maintain IP fragment queue in an rbtree, but optimize properly for in-order frags. From Peter Oskolkov. - Improvde handling of ACKs on hole repairs, from Yuchung Cheng" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1996 commits) bpf: test: fix spelling mistake "REUSEEPORT" -> "REUSEPORT" hv/netvsc: Fix NULL dereference at single queue mode fallback net: filter: mark expected switch fall-through xen-netfront: fix warn message as irq device name has '/' cxgb4: Add new T5 PCI device ids 0x50af and 0x50b0 net: dsa: mv88e6xxx: missing unlock on error path rds: fix building with IPV6=m inet/connection_sock: prefer _THIS_IP_ to current_text_addr net: dsa: mv88e6xxx: bitwise vs logical bug net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd() ieee802154: hwsim: using right kind of iteration net: hns3: Add vlan filter setting by ethtool command -K net: hns3: Set tx ring' tc info when netdev is up net: hns3: Remove tx ring BD len register in hns3_enet net: hns3: Fix desc num set to default when setting channel net: hns3: Fix for phy link issue when using marvell phy driver net: hns3: Fix for information of phydev lost problem when down/up net: hns3: Fix for command format parsing error in hclge_is_all_function_id_zero net: hns3: Add support for serdes loopback selftest bnxt_en: take coredump_record structure off stack ...
2018-08-14Merge tag 'leds-for-4.19-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds Pull LED updates from Jacek Anaszewski: "LED triggers improvements make the biggest part of this pull request. The most striking ones, that allowed for nice cleanups in the triggers are: - centralized handling of creation and removal of trigger sysfs attributes via attribute group - addition of module_led_trigger() helper The other things that need to be mentioned: New features and improvements to existing LED class drivers: - lt3593: add DT support, switch to gpiod interface - lm3692x: support LED sync configuration, change OF calls to fwnode calls - apu: modify PC Engines apu/apu2 driver to support apu3 Change in the drivers/net/can/led.c: - mark led trigger as broken since it's in the way for the further cleanups. It implements a subset of the netdev trigger and an Ack is needed from someone who can actually test and confirm that the netdev trigger works for can devices" * tag 'leds-for-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: (32 commits) leds: ns2: Change unsigned to unsigned int usb: simplify usbport trigger leds: gpio trigger: simplifications from core changes leds: backlight trigger: simplifications from core changes leds: activity trigger: simplifications from core changes leds: default-on trigger: make use of module_led_trigger() leds: heartbeat trigger: simplifications from core changes leds: oneshot trigger: simplifications from core changes leds: transient trigger: simplifications from core changes leds: timer trigger: simplifications from core changes leds: netdev trigger: simplifications from core changes leds: triggers: new function led_set_trigger_data() leds: triggers: define module_led_trigger helper leds: triggers: handle .trigger_data and .activated() in the core leds: triggers: add device attribute support leds: triggers: let struct led_trigger::activate() return an error code leds: triggers: make the MODULE_LICENSE string match the actual license leds: lm3692x: Support LED sync configuration dt: bindings: lm3692x: Update binding for LED sync control leds: lm3692x: Change DT calls to fwnode calls ...
2018-08-14mac80211: Run TXQ teardown code before de-registering interfacesToke Høiland-Jørgensen
The TXQ teardown code can reference the vif data structures that are stored in the netdev private memory area if there are still packets on the queue when it is being freed. Since the TXQ teardown code is run after the netdevs are freed, this can lead to a use-after-free. Fix this by moving the TXQ teardown code to earlier in ieee80211_unregister_hw(). Reported-by: Ben Greear <greearb@candelatech.com> Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-07-24Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/netDavid S. Miller
2018-07-24net: remove blank lines at end of fileStephen Hemminger
Several files have extra line at end of file. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-24Merge tag 'mac80211-next-for-davem-2018-07-24' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== Only a few things: * HE (802.11ax) support in HWSIM * bypass TXQ with NDP frames as they're special * convert ahash -> shash in lib80211 TKIP * avoid playing with tailroom counter defer unless needed to avoid issues in some cases ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-24mac80211: restrict delayed tailroom needed decrementManikanta Pubbisetty
As explained in ieee80211_delayed_tailroom_dec(), during roam, keys of the old AP will be destroyed and new keys will be installed. Deletion of the old key causes crypto_tx_tailroom_needed_cnt to go from 1 to 0 and the new key installation causes a transition from 0 to 1. Whenever crypto_tx_tailroom_needed_cnt transitions from 0 to 1, we invoke synchronize_net(); the reason for doing this is to avoid a race in the TX path as explained in increment_tailroom_need_count(). This synchronize_net() operation can be slow and can affect the station roam time. To avoid this, decrementing the crypto_tx_tailroom_needed_cnt is delayed for a while so that upon installation of new key the transition would be from 1 to 2 instead of 0 to 1 and thereby improving the roam time. This is all correct for a STA iftype, but deferring the tailroom_needed decrement for other iftypes may be unnecessary. For example, let's consider the case of a 4-addr client connecting to an AP for which AP_VLAN interface is also created, let the initial value for tailroom_needed on the AP be 1. * 4-addr client connects to the AP (AP: tailroom_needed = 1) * AP will clear old keys, delay decrement of tailroom_needed count * AP_VLAN is created, it takes the tailroom count from master (AP_VLAN: tailroom_needed = 1, AP: tailroom_needed = 1) * Install new key for the station, assume key is plumbed in the HW, there won't be any change in tailroom_needed count on AP iface * Delayed decrement of tailroom_needed count on AP (AP: tailroom_needed = 0, AP_VLAN: tailroom_needed = 1) Because of the delayed decrement on AP iface, tailroom_needed count goes out of sync between AP(master iface) and AP_VLAN(slave iface) and there would be unnecessary tailroom created for the packets going through AP_VLAN iface. Also, WARN_ONs were observed while trying to bring down the AP_VLAN interface: (warn_slowpath_common) (warn_slowpath_null+0x18/0x20) (warn_slowpath_null) (ieee80211_free_keys+0x114/0x1e4) (ieee80211_free_keys) (ieee80211_del_virtual_monitor+0x51c/0x850) (ieee80211_del_virtual_monitor) (ieee80211_stop+0x30/0x3c) (ieee80211_stop) (__dev_close_many+0x94/0xb8) (__dev_close_many) (dev_close_many+0x5c/0xc8) Restricting delayed decrement to station interface alone fixes the problem and it makes sense to do so because delayed decrement is done to improve roam time which is applicable only for client devices. Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-07-09net: allow ndo_select_queue to pass netdevAlexander Duyck
This patch makes it so that instead of passing a void pointer as the accel_priv we instead pass a net_device pointer as sb_dev. Making this change allows us to pass the subordinate device through to the fallback function eventually so that we can keep the actual code in the ndo_select_queue call as focused on possible on the exception cases. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2018-07-09mac80211: don't put null-data frames on the normal TXQJohannes Berg
Since (QoS) NDP frames shouldn't be put into aggregation nor are assigned real sequence numbers, etc. it's better to treat them as non-data packets and not put them on the normal TXQs, for example when building A-MPDUs they need to be treated specially, and they are more used for management (e.g. to see if the station is alive) anyway. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-07-06nl80211/mac80211: allow non-linear skb in rx_control_portDenis Kenzior
The current implementation of cfg80211_rx_control_port assumed that the caller could provide a contiguous region of memory for the control port frame to be sent up to userspace. Unfortunately, many drivers produce non-linear skbs, especially for data frames. This resulted in userspace getting notified of control port frames with correct metadata (from address, port, etc) yet garbage / nonsense contents, resulting in bad handshakes, disconnections, etc. mac80211 linearizes skbs containing management frames. But it didn't seem worthwhile to do this for control port frames. Thus the signature of cfg80211_rx_control_port was changed to take the skb directly. nl80211 then takes care of obtaining control port frame data directly from the (linear | non-linear) skb. The caller is still responsible for freeing the skb, cfg80211_rx_control_port does not take ownership of it. Fixes: 6a671a50f819 ("nl80211: Add CMD_CONTROL_PORT_FRAME API") Signed-off-by: Denis Kenzior <denkenz@gmail.com> [fix some kernel-doc formatting, add fixes tag] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-07-05leds: triggers: let struct led_trigger::activate() return an error codeUwe Kleine-König
Given that activating a trigger can fail, let the callback return an indication. This prevents to have a trigger active according to the "trigger" sysfs attribute but not functional. All users are changed accordingly to return 0 for now. There is no intended change in behaviour. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
2018-07-03mac80211: add stations tied to AP_VLANs during hw reconfigmpubbise@codeaurora.org
As part of hw reconfig, only stations linked to AP interfaces are added back to the driver ignoring those which are tied to AP_VLAN interfaces. It is true that there could be stations tied to the AP_VLAN interface while serving 4addr clients or when using AP_VLAN for VLAN operations; we should be adding these stations back to the driver as part of hw reconfig, failing to do so can cause functional issues. In the case of ath10k driver, the following errors were observed. ath10k_pci : failed to install key for non-existent peer XX:XX:XX:XX:XX:XX Workqueue: events_freezable ieee80211_restart_work [mac80211] (unwind_backtrace) from (show_stack+0x10/0x14) (show_stack) (dump_stack+0x80/0xa0) (dump_stack) (warn_slowpath_common+0x68/0x8c) (warn_slowpath_common) (warn_slowpath_null+0x18/0x20) (warn_slowpath_null) (ieee80211_enable_keys+0x88/0x154 [mac80211]) (ieee80211_enable_keys) (ieee80211_reconfig+0xc90/0x19c8 [mac80211]) (ieee80211_reconfig]) (ieee80211_restart_work+0x8c/0xa0 [mac80211]) (ieee80211_restart_work) (process_one_work+0x284/0x488) (process_one_work) (worker_thread+0x228/0x360) (worker_thread) (kthread+0xd8/0xec) (kthread) (ret_from_fork+0x14/0x24) Also while bringing down the AP VAP, WARN_ONs and errors related to peer removal were observed. ath10k_pci : failed to clear all peer wep keys for vdev 0: -2 ath10k_pci : failed to disassociate station: 8c:fd:f0:0a:8c:f5 vdev 0: -2 (unwind_backtrace) (show_stack+0x10/0x14) (show_stack) (dump_stack+0x80/0xa0) (dump_stack) (warn_slowpath_common+0x68/0x8c) (warn_slowpath_common) (warn_slowpath_null+0x18/0x20) (warn_slowpath_null) (sta_set_sinfo+0xb98/0xc9c [mac80211]) (sta_set_sinfo [mac80211]) (__sta_info_flush+0xf0/0x134 [mac80211]) (__sta_info_flush [mac80211]) (ieee80211_stop_ap+0xe8/0x390 [mac80211]) (ieee80211_stop_ap [mac80211]) (__cfg80211_stop_ap+0xe0/0x3dc [cfg80211]) (__cfg80211_stop_ap [cfg80211]) (cfg80211_stop_ap+0x30/0x44 [cfg80211]) (cfg80211_stop_ap [cfg80211]) (genl_rcv_msg+0x274/0x30c) (genl_rcv_msg) (netlink_rcv_skb+0x58/0xac) (netlink_rcv_skb) (genl_rcv+0x20/0x34) (genl_rcv) (netlink_unicast+0x11c/0x204) (netlink_unicast) (netlink_sendmsg+0x30c/0x370) (netlink_sendmsg) (sock_sendmsg+0x70/0x84) (sock_sendmsg) (___sys_sendmsg.part.3+0x188/0x228) (___sys_sendmsg.part.3) (__sys_sendmsg+0x4c/0x70) (__sys_sendmsg) (ret_fast_syscall+0x0/0x44) These issues got fixed by adding the stations which are tied to AP_VLANs back to the driver. Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-07-03Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Simple overlapping changes in stmmac driver. Adjust skb_gro_flush_final_remcsum function signature to make GRO list changes in net-next, as per Stephen Rothwell's example merge resolution. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-30Merge tag 'mac80211-next-for-davem-2018-06-29' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Small merge conflict in net/mac80211/scan.c, I preserved the kcalloc() conversion. -DaveM Johannes Berg says: ==================== This round's updates: * finally some of the promised HE code, but it turns out to be small - but everything kept changing, so one part I did in the driver was >30 patches for what was ultimately <200 lines of code ... similar here for this code. * improved scan privacy support - can now specify scan flags for randomizing the sequence number as well as reducing the probe request element content * rfkill cleanups * a timekeeping cleanup from Arnd * various other cleanups ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-29mac80211: use BIT_ULL for NL80211_STA_INFO_* attribute typesOmer Efrat
The BIT macro uses unsigned long which some architectures handle as 32 bit and therefore might cause macro's shift to overflow when used on a value equals or larger than 32 (NL80211_STA_INFO_RX_DURATION and afterwards). Since 'filled' member in station_info changed to u64, BIT_ULL macro should be used with all NL80211_STA_INFO_* attribute types instead of BIT to prevent future possible bugs when one will use BIT macro for higher attributes by mistake. This commit cleans up all usages of BIT macro with the above field in mac80211 by changing it to BIT_ULL instead. Signed-off-by: Omer Efrat <omer.efrat@tandemg.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-06-29mac80211: remove unnecessary NULL checkJohannes Berg
We don't need to check if he_oper is NULL before calling ieee80211_verify_sta_he_mcs_support() as it - now - will correctly check this itself. Remove the redundant check. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-06-29mac80211: fix potential null pointer dereferenceGustavo A. R. Silva
he_op is being dereferenced before it is null checked, hence there is a potential null pointer dereference. Fix this by moving the pointer dereference after he_op has been properly null checked. Notice that, currently, he_op is already being null checked before calling this function at 4593: 4593 if (!he_oper || 4594 !ieee80211_verify_sta_he_mcs_support(sband, he_oper)) 4595 ifmgd->flags |= IEEE80211_STA_DISABLE_HE; but in case ieee80211_verify_sta_he_mcs_support is ever called without verifying he_oper is not null, we will end up having a null pointer dereference. So, we better don't take any chances. Addresses-Coverity-ID: 1470068 ("Dereference before null check") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-06-29mac80211: disable BHs/preemption in ieee80211_tx_control_port()Denis Kenzior
On pre-emption enabled kernels the following print was being seen due to missing local_bh_disable/local_bh_enable calls. mac80211 assumes that pre-emption is disabled in the data path. BUG: using smp_processor_id() in preemptible [00000000] code: iwd/517 caller is __ieee80211_subif_start_xmit+0x144/0x210 [mac80211] [...] Call Trace: dump_stack+0x5c/0x80 check_preemption_disabled.cold.0+0x46/0x51 __ieee80211_subif_start_xmit+0x144/0x210 [mac80211] Fixes: 911806491425 ("mac80211: Add support for tx_control_port") Signed-off-by: Denis Kenzior <denkenz@gmail.com> [commit message rewrite, fixes tag] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-06-18mac80211: add support for HELuca Coelho
Add support for HE in mac80211 conforming with P802.11ax_D1.4. Johannes: Fix another bug with the buf_size comparison in agg-rx.c. Signed-off-by: Liad Kaufman <liad.kaufman@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Ido Yariv <idox.yariv@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-06-18ieee80211: bump IEEE80211_MAX_AMPDU_BUF to support HEJohannes Berg
Bump the IEEE80211_MAX_AMPDU_BUF size to 0x100 for HE support and - for now - use IEEE80211_MAX_AMPDU_BUF_HT everywhere. This is derived from my internal patch, parts of which Luca had sent upstream. Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-06-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
Pull networking fixes from David Miller: 1) Various netfilter fixlets from Pablo and the netfilter team. 2) Fix regression in IPVS caused by lack of PMTU exceptions on local routes in ipv6, from Julian Anastasov. 3) Check pskb_trim_rcsum for failure in DSA, from Zhouyang Jia. 4) Don't crash on poll in TLS, from Daniel Borkmann. 5) Revert SO_REUSE{ADDR,PORT} change, it regresses various things including Avahi mDNS. From Bart Van Assche. 6) Missing of_node_put in qcom/emac driver, from Yue Haibing. 7) We lack checking of the TCP checking in one special case during SYN receive, from Frank van der Linden. 8) Fix module init error paths of mac80211 hwsim, from Johannes Berg. 9) Handle 802.1ad properly in stmmac driver, from Elad Nachman. 10) Must grab HW caps before doing quirk checks in stmmac driver, from Jose Abreu. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (81 commits) net: stmmac: Run HWIF Quirks after getting HW caps neighbour: skip NTF_EXT_LEARNED entries during forced gc net: cxgb3: add error handling for sysfs_create_group tls: fix waitall behavior in tls_sw_recvmsg tls: fix use-after-free in tls_push_record l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl() l2tp: reject creation of non-PPP sessions on L2TPv2 tunnels mlxsw: spectrum_switchdev: Fix port_vlan refcounting mlxsw: spectrum_router: Align with new route replace logic mlxsw: spectrum_router: Allow appending to dev-only routes ipv6: Only emit append events for appended routes stmmac: added support for 802.1ad vlan stripping cfg80211: fix rcu in cfg80211_unregister_wdev mac80211: Move up init of TXQs mac80211_hwsim: fix module init error paths cfg80211: initialize sinfo in cfg80211_get_station nl80211: fix some kernel doc tag mistakes hv_netvsc: Fix the variable sizes in ipsecv2 and rsc offload rds: avoid unenecessary cong_update in loop transport l2tp: clean up stale tunnel or session in pppol2tp_connect's error path ...
2018-06-15mac80211: support scan features for improved scan privacyJohannes Berg
Support the new random SN and minimal probe request contents scan flags for the case of software scan - for hardware scan the drivers need to opt in, but may need to do only that, depending on their implementation. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2018-06-15mac80211: split ieee80211_send_probe_req()Johannes Berg
This function is passed many more parameters in the scan case than in the MLME case, and differentiates the two cases inside. Split it up and make both versions static to simplify things. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2018-06-15mac80211: add probe request building flagsJohannes Berg
Add flags to pass through to probe request building and change the "bool directed" to be one of them. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2018-06-15mac80211: Move up init of TXQsToke Høiland-Jørgensen
On init, ieee80211_if_add() dumps the interface. Since that now includes a dump of the TXQ state, we need to initialise that before the dump happens. So move up the TXQ initialisation to to before the call to ieee80211_if_add(). Fixes: 52539ca89f36 ("cfg80211: Expose TXQ stats and parameters to userspace") Reported-by: Niklas Cassel <niklas.cassel@linaro.org> Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> Tested-by: Niklas Cassel <niklas.cassel@linaro.org> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12treewide: kmalloc() -> kmalloc_array()Kees Cook
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-05-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Lots of easy overlapping changes in the confict resolutions here. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-23mac80211: Support adding duration for prepare_tx() callbackIlan Peer
There are specific cases, such as SAE authentication exchange, that might require long duration to complete. For such cases, add support for indicating to the driver the required duration of the prepare_tx() operation, so the driver would still be able to complete the frame exchange. Currently, indicate the duration only for SAE authentication exchange, as SAE authentication can take up to 2000 msec (as defined in IEEE P802.11-REVmd D1.0 p. 3504). As the patch modified the prepare_tx() callback API, also modify the relevant code in iwlwifi. Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-23Merge remote-tracking branch 'net-next/master' into mac80211-nextJohannes Berg
Bring in net-next which had pulled in net, so I have the changes from mac80211 and can apply a patch that would otherwise conflict. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-18mac80211: allocate and fill tidstats only when neededJohannes Berg
This fixes memory leaks in the case where we just have the station info on the stack for internal usage without sending it to cfg80211. Fixes: 8689c051a201 ("cfg80211: dynamically allocate per-tid stats for station info") Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-18mac80211: fix TX aggregation stop raceAlexander Wetzel
The mac80211 tear down code is not waiting for the driver call back. This can bring down the the TX path (TID) till the user manually reconnects. (Observed with iwldvm and enabled TX aggregation.) The race can be prevented when the ampdu_mlme worker handles the tear down. The race: * ieee80211_sta_tear_down_BA_sessions calls ___ieee80211_stop_tx_ba_session for all TIDs, * then cancels the ampdu_mlme worker * and cleanups the TIDs the driver already has called back for. * ieee80211_stop_tx_ba_cb will never be called for a TID if the callback came after the the check in ieee80211_sta_tear_down_BA_sessions. Signed-off-by: Alexander Wetzel <Alexander.Wetzel@web.de> [johannes: "enabled" -> "blocked" and invert logic, simplify init] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-18cfg80211/mac80211: revert to stack allocation for sinfoJohannes Berg
Arend's previous patch made the sinfo structure smaller again by to dynamically allocating the per-tid stats only when needed. Thus, revert to stack allocation for the struct to simplify the code. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2018-05-18cfg80211: dynamically allocate per-tid stats for station infoArend van Spriel
With the addition of TXQ stats in the per-tid statistics the struct station_info grew significantly. This resulted in stack size warnings due to the structure itself being above the limit for the warnings. Add an allocation function that those who want to provide per-tid stats should use to allocate the tid array, i.e. struct station_info::pertid. Cc: Toke Høiland-Jørgensen <toke@toke.dk> Fixes: 52539ca89f36 ("cfg80211: Expose TXQ stats and parameters to userspace") Signed-off-by: Arend van Spriel <aspriel@gmail.com> [johannes: fix missing BIT() and logic by removing] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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