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* mac80211: fix memory leak in register_hw() error pathJohannes Berg2014-01-06
| | | | | | | | | Move the internal scan request allocation below the last sanity check in ieee80211_register_hw() to avoid leaking memory if the sanity check actually triggers. Reported-by: ZHAO Gang <gamerh2o@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: handle station TX latency allocation errorsJohannes Berg2014-01-06
| | | | | | | | | | | | When the station's TX latency data structures need to be allocated, handle failures properly and also free all the structures if there are any other problems. Move the allocation code up so that allocation failures don't trigger rate control algorithm calls. Reported-by: ZHAO Gang <gamerh2o@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: clean up netdev debugfs macros a bitJohannes Berg2014-01-06
| | | | | | | | Clean up the file macros a bit and use that to remove the unnecessary format function for the tkip MIC test file that really is write-only. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: add tracing for ieee80211_sta_set_bufferedJohannes Berg2014-01-06
| | | | | | | | This is useful for debugging issues with drivers using this function (erroneously), so add tracing for the API call. Change-Id: Ice9d7eabb8fecbac188f0a741920d3488de700ec Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* cfg80211/mac80211: correct qos-map lockingJohannes Berg2013-12-30
| | | | | | | | Since the RTNL can't always be held, use wdev/sdata locking for the qos-map dereference in mac80211. This requires cfg80211 to consistently lock it, which it was missing in one place. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: Add support for QoS mappingKyeyoon Park2013-12-19
| | | | | | | | | Implement set_qos_map() handler for mac80211 to enable QoS mapping functionality. Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com> Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* cfg80211: Add support for QoS mappingKyeyoon Park2013-12-19
| | | | | | | | | | | | | | | | | This allows QoS mapping from external networks to be implemented as defined in IEEE Std 802.11-2012, 10.24.9. APs can use this to advertise DSCP ranges and exceptions for mapping frames to a specific UP over Wi-Fi. The payload of the QoS Map Set element (IEEE Std 802.11-2012, 8.4.2.97) is sent to the driver through the new NL80211_ATTR_QOS_MAP attribute to configure the local behavior either on the AP (based on local configuration) or on a station (based on information received from the AP). Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com> Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: add helper functions for tracking P2P NoA stateFelix Fietkau2013-12-19
| | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: fix iflist_mtx/mtx locking in radar detectionJohannes Berg2013-12-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The scan code creates an iflist_mtx -> mtx locking dependency, and a few other places, notably radar detection, were creating the opposite dependency, causing lockdep to complain. As scan and radar detection are mutually exclusive, the deadlock can't really happen in practice, but it's still bad form. A similar issue exists in the monitor mode code, but this is only used by channel-context drivers right now and those have to have hardware scan, so that also can't happen. Still, fix these issues by making some of the channel context code require the mtx to be held rather than acquiring it, thus allowing the monitor/radar callers to keep the iflist_mtx->mtx lock ordering. While at it, also fix access to the local->scanning variable in the radar code, and document that radar_detect_enabled is now properly protected by the mtx. All this would now introduce an ABBA deadlock between the DFS work cancelling and local->mtx, so change the locking there a bit to not need to use cancel_delayed_work_sync() but be able to just use cancel_delayed_work(). The work is also safely stopped/removed when the interface is stopped, so no extra changes are needed. Reported-by: Kalle Valo <kvalo@qca.qualcomm.com> Tested-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: remove unnecessary iflist_mtx lockingJohannes Berg2013-12-19
| | | | | | | | | | | | | | The radar detection code changed a few times, and due to the changes some iflist_mtx locking stayed in that isn't actually necessary - remove it. One version of the code needed it because an AP interface's VLAN list was changed to use this, but then we moved the list handling outside of the chanctx handling and thus the locking was no longer needed. Tested-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: align struct ps_data.tim to unsigned longJoe Perches2013-12-19
| | | | | | | | Its address is used as an unsigned long *, so make sure that the tim u8 array is properly aligned. Signed-off-by: Joe Perches <joe@perches.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: make ieee80211_recalc_radar_chanctx staticJohannes Berg2013-12-18
| | | | | | | The function is only used in one file, so move it up a bit to avoid forward declarations and make it static. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: fix checkpatch errorsWeilong Chen2013-12-18
| | | | | | | Fix a number of different checkpatch errors. Signed-off-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: read station mgmt keys via get_key callMax Stepanov2013-12-16
| | | | | | | | Allow to read management keys stored in a station's gtk key array with a get_key function. Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: check pairwise key_idx on get_key callMax Stepanov2013-12-16
| | | | | | | | Verify that a pairwise key index value on ieee80211_get_key call doesn't exceed the boundaries of the pairwise key array. Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: align ieee80211_ibss_csa_beacon() with ieee80211_assign_beacon()Luciano Coelho2013-12-16
| | | | | | | | | | | | | | The return value of ieee80211_ibss_csa_beacon is not aligned with the return value of ieee80211_assign_beacon(). For consistency and to be able to use both functions with similar code, change ieee80211_ibss_csa_beacon() not to send the bss changed notification itself, but return what has changed so the caller can send the notification instead. Tested by: Simon Wunderlich <sw@simonwunderlich.de> Acked by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: refactor ieee80211_ibss_process_chanswitch()Luciano Coelho2013-12-16
| | | | | | | | | | Refactor ieee80211_ibss_process_chanswitch() to use ieee80211_channel_switch() and avoid code duplication. Tested by: Simon Wunderlich <sw@simonwunderlich.de> Acked by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: update adjusting TBTT bit in beaconThomas Pedersen2013-12-16
| | | | | | | | | | | | | | | | | | | | | This regression was introduced in "mac80211: cache mesh beacon". mesh_sync_offset_adjust_tbtt() was assuming that the beacon would be rebuilt in every single pre-tbtt interrupt, but now the beacon update happens on the workqueue, and it must be ready for immediate delivery to the driver. Save a pointer to the meshconf IE in the beacon_data (this works because both the IE pointer and beacon buffer are protected by the same rcu_{dereference,assign_pointer}()) for quick updates during pre-tbtt. This is faster and a little prettier than iterating over the elements to find the meshconf IE every time. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: reschedule sched scan after HW restartDavid Spinadel2013-12-16
| | | | | | | | | | Keep the sched scan req when starting sched scan, and reschedule it in case of HW restart during sched scan. The upper layer don't have to know about the restart. Signed-off-by: David Spinadel <david.spinadel@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: make ieee80211_assign_beacon() staticLuciano Coelho2013-12-16
| | | | | | | | | This function is not used anywhere else than in cfg.c, so there's no need to export it. Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Reviewed-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: lock sdata in ieee80211_csa_connection_drop_work()Luciano Coelho2013-12-16
| | | | | | | | | We call ieee80211_ibss_disconnect(), which requires sdata to be locked, so lock the sdata during ieee80211_csa_connection_drop_work(). Cc: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Luciano Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: let the driver reserve extra tailroom in beaconsFelix Fietkau2013-12-16
| | | | | | | | Can be used to add extra IEs (such as P2P NoA) without having to reallocate the buffer. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: free all AP/VLAN keys at onceJohannes Berg2013-12-16
| | | | | | | | | | When the AP interface is stopped, free all AP and VLAN keys at once to only require synchronize_net() once. Since that does synchronize_net(), also move two such calls into the function (using the new force_synchronize parameter) to avoid doing it twice. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: optimise mixed AP/VLAN station removalJohannes Berg2013-12-16
| | | | | | | | | | | Teach sta_info_flush() to optionally also remove stations from all VLANs associated with an AP interface to optimise the station removal (in particular, synchronize_net().) To not have to add the vlans argument throughout, do some refactoring. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: optimise synchronize_net() for sta_info_flushJohannes Berg2013-12-16
| | | | | | | | | | | There's no reason to have one synchronize_net() for each removed station, refactor the code slightly to have just a single synchronize_net() for all stations. Note that this is currently useless as hostapd removes stations one by one and this coalescing never happens. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: move synchronize_net() before sta key removalJohannes Berg2013-12-16
| | | | | | | | | | | | There's no reason to do this inside the sta key removal since the keys can only be reached through the sta (and not by the driver at all) so once the sta can no longer be reached, the keys are safe. This will allow further optimisation opportunities with multiple stations. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: don't delay station destructionJohannes Berg2013-12-16
| | | | | | | | | | | | If we can assume that stations are never referenced by the driver after sta_state returns (and this is true since the previous iwlmvm patch and for all other drivers) then we don't need to delay station destruction, and don't need to play tricks with rcu_barrier() etc. This should speed up some scenarios like hostapd shutdown. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: move 4-addr sta pointer clearing before synchronize_rcu()Johannes Berg2013-12-16
| | | | | | | | | | | | | The pointer should be cleared before synchronize_rcu() so that the consequently dead station won't be found by any lookups in the TX or RX paths. Also check that the station is actually the one being removed, the check is not needed because each 4-addr VLAN can only have a single station and non-4-addr VLANs always have a NULL pointer there, but the code is clearer this way (and we avoid the memory write.) Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* mac80211: add pre-RCU-sync sta removal driver operationJohannes Berg2013-12-16
| | | | | | | | | | | | | | | | | | | | | | | Currently, mac80211 allows drivers to keep RCU-protected station references that are cleared when the station is removed from the driver and consequently needs to synchronize twice, once before removing the station from the driver (so it can guarantee that the station is no longer used in TX towards the driver) and once after the station is removed from the driver. Add a new pre-RCU-synchronisation station removal operation to the API to allow drivers to clear/invalidate their RCU-protected station pointers before the RCU synchronisation. This will allow removing the second synchronisation by changing the driver API so that the driver may no longer assume a valid RCU-protected pointer after sta_remove/sta_state returns. The alternative to this would be to synchronize_rcu() in all the drivers that currently rely on this behaviour (only iwlmvm) but that would defeat the purpose. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* Merge remote-tracking branch 'wireless-next/master' into mac80211-nextJohannes Berg2013-12-16
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| * Merge branch 'master' of ↵John W. Linville2013-12-06
| |\ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/brcm80211/Kconfig net/mac80211/util.c
| | * mac80211: check csa wiphy flag in ibss before switchingSimon Wunderlich2013-12-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When external CSA IEs are received (beacons or action messages), a channel switch is triggered as well. This should only be allowed on devices which actually support channel switches, otherwise disconnect. (For the corresponding userspace invocation, the wiphy flag is checked in nl80211). Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: set hw initial idle stateKarl Beldan2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ATM, the first call of ieee80211_do_open will configure the hw as non-idle, even if the interface being brought up is not a monitor, and this leads to inconsistent sequences like: register_hw() do_open(sta) hw_config(non-idle) (.. sta is non-idle ..) scan(sta) hw_config(idle) (after scan finishes) do_stop(sta) do_open(sta) (.. sta is idle ..) Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: use capped prob when computing throughputsKarl Beldan2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 3e8b1eb "mac80211/minstrel_ht: improve rate selection stability" introduced a local capped prob in minstrel_ht_calc_tp but omitted to use it to compute the per rate throughput. Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com> Cc: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: fix connection pollingEliad Peller2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 392b9ff ("mac80211: change beacon/connection polling") removed the IEEE80211_STA_BEACON_POLL flag. However, it accidentally removed the setting of IEEE80211_STA_CONNECTION_POLL, making the connection polling completely useless (the flag is always clear, so the result is never being checked). Fix it. Signed-off-by: Eliad Peller <eliad@wizery.com> Acked-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: fix the mesh channel switch supportChun-Yeow Yeoh2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mesh STA receiving the mesh CSA action frame is not able to trigger the mesh channel switch due to the incorrect handling and comparison of mesh channel switch parameters element (MCSP)'s TTL. Make sure the MCSP's TTL is updated accordingly before calling the ieee80211_mesh_process_chnswitch. Also, we update the beacon before forwarding the CSA action frame, so MCSP's precedence value and initiator flag need to be updated prior to this. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: don't attempt to reorder multicast framesJohannes Berg2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Multicast frames can't be transmitted as part of an aggregation session (such a session couldn't even be set up) so don't try to reorder them. Trying to do so would cause the reorder to stop working correctly since multicast QoS frames (as transmitted by the Aruba APs this was found with) would cause sequence number confusion in the buffer. Cc: stable@vger.kernel.org Reported-by: Blaise Gassend <blaise@suitabletech.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: minstrel_ht: fix rates selectionKarl Beldan2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When initializing rates selections starting indexes upon stats update, the minstrel_sta->max_* rates should be 'group * MCS_GROUP_RATES + i' not 'i'. This affects settings where one of the peers does not support any of the rates of the group 0 (i.e. when ht_cap.mcs.rx_mask[0] == 0). Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com> Acked-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: fix for mesh beacon update on powersaveJavier Lopez2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mesh beacon was not being rebuild after user triggered a mesh powersave change. To solve this issue use ieee80211_mbss_info_change_notify instead of ieee80211_bss_info_change_notify. This helper function forces mesh beacon to be rebuild and then notifies the driver about the beacon change. Signed-off-by: Javier Lopez <jlopex@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: fix crash when using AP VLAN interfacesFelix Fietkau2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit "mac80211: implement SMPS for AP" applies to AP_VLAN as well. It assumes that sta->sdata->vif.bss_conf.bssid is present, which did not get set for AP_VLAN. Initialize it to sdata->vif.addr like for other interface types. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: fix scheduled scan rtnl deadlockJohannes Berg2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When changing cfg80211 to use RTNL locking, this caused a deadlock in mac80211 as it calls cfg80211_sched_scan_stopped() from a work item that's on a workqueue that is flushed with the RTNL held. Fix this by simply using schedule_work(), the work only needs to finish running before the wiphy is unregistered, no other synchronisation (e.g. with suspend) is really required since for suspend userspace is already blocked anyway when we flush the workqueue so will only pick up the event after resume. Cc: stable@vger.kernel.org Fixes: 5fe231e87372 ("cfg80211: vastly simplify locking") Reported-and-tested-by: Eliad Peller <eliadx.peller@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * mac80211: DFS setup chandef for radar_event correctlyJanusz Dziedzic2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Setup chandef for radar event correctly, before we will clear this in ieee80211_dfs_cac_cancel() function. Without this patch mac80211 will report wrong channel width in case we will get radar event during active CAC. Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| | * Revert "mac80211: allow disable power save in mesh"Bob Copeland2013-11-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit ee1f668136b2fb6640ee2d54c2a525ea41f98211. The aformentioned commit added a check to allow 'iw wlan0 set power_save off' to work for mesh interfaces. However, this is problematic because it also allows 'iw wlan0 set power_save on', which will crash in short order because all of the subsequent code manipulates sdata->u.mgd. The power-saving states for mesh interfaces can be manipulated through the mesh config, e.g: 'iw wlan0 set mesh_param mesh_power_save=active' (which, despite the name, actualy disables power saving since the setting refers to the type of sleep the interface undergoes). Cc: stable@vger.kernel.org Fixes: ee1f668136b2 ("mac80211: allow disable power save in mesh") Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| * | Merge branch 'for-john' of ↵John W. Linville2013-12-02
| |\ \ | | |/ | |/| | | | git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
| * | Merge branch 'master' of ↵John W. Linville2013-11-08
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
| * \ \ Merge branch 'master' of ↵John W. Linville2013-11-04
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem Conflicts: drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h
| * \ \ \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-10-23
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/net/usb/qmi_wwan.c include/net/dst.h Trivial merge conflicts, both were overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | net: misc: Remove extern from function prototypesJoe Perches2013-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | | Merge branch 'master' of ↵John W. Linville2013-10-17
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
| * \ \ \ \ \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2013-10-08
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: include/linux/netdevice.h net/core/sock.c Trivial merge issues. Removal of "extern" for functions declaration in netdevice.h at the same time "const" was added to an argument. Two parallel line additions in net/core/sock.c Signed-off-by: David S. Miller <davem@davemloft.net>
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