kernel.git/net/mac80211/chan.c, branch linux-3.18.y

mac80211: copy chandef from AP vif to VLANs

2015-01-08T18:30:23Z

commit 2967e031d4d737d9cc8252d878a17924d7b704f0 upstream. Instead of keeping track of all those special cases where VLAN interfaces have no bss_conf.chandef, just make sure they have the same as the AP interface they belong to. Among others, this fixes a crash getting a VLAN's channel from userspace since a NULL channel is returned as a good result (return value 0) for VLANs since the commit below. Fixes: c12bc4885f4b3 ("mac80211: return the vif's chandef in ieee80211_cfg_get_channel()") Signed-off-by: Felix Fietkau [rewrite commit log] Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

2014-09-08T15:14:56Z

Merge tag 'mac80211-next-for-john-2014-08-29' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2014-09-04T17:41:33Z

Johannes Berg says: "Not that much content this time. Some RCU cleanups, crypto performance improvements, and various patches all over, rather than listing them one might as well look into the git log instead." Signed-off-by: John W. Linville Conflicts: drivers/net/wireless/ath/wil6210/wmi.c

Merge tag 'mac80211-for-john-2014-08-29' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

2014-09-04T17:08:24Z

Johannes Berg says: "Here are a few fixes for mac80211. One has been discussed for a while and adds a terminating NUL-byte to the alpha2 sent to userspace, which shouldn't be necessary but since many places treat it as a string we couldn't move to just sending two bytes. In addition to that, we have two VLAN fixes from Felix, a mesh fix, a fix for the recently introduced RX aggregation offload, a revert for a broken patch (that luckily didn't really cause any harm) and a small fix for alignment in debugfs." Signed-off-by: John W. Linville

mac80211: fix chantype recalc warning

2014-08-29T11:06:01Z

When a device driver is unloaded local->interfaces list is cleared. If there was more than 1 interface running and connected (bound to a chanctx) then chantype recalc was called and it ended up with compat being NULL causing a call trace warning. Warn if compat becomes NULL as a result of incompatible bss_conf.chandef of interfaces bound to a given channel context only. The call trace looked like this: WARNING: CPU: 2 PID: 2594 at /devel/src/linux/net/mac80211/chan.c:557 ieee80211_recalc_chanctx_chantype+0x2cd/0x2e0() Modules linked in: ath10k_pci(-) ath10k_core ath CPU: 2 PID: 2594 Comm: rmmod Tainted: G W 3.16.0-rc1+ #150 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 0000000000000009 ffff88001ea279c0 ffffffff818dfa93 0000000000000000 ffff88001ea279f8 ffffffff810514a8 ffff88001ce09cd0 ffff88001e03cc58 0000000000000000 ffff88001ce08840 ffff88001ce09cd0 ffff88001ea27a08 Call Trace: [] dump_stack+0x4d/0x66 [] warn_slowpath_common+0x78/0xa0 [] warn_slowpath_null+0x15/0x20 [] ieee80211_recalc_chanctx_chantype+0x2cd/0x2e0 [] ? ieee80211_recalc_chanctx_chantype+0x2a/0x2e0 [] ieee80211_assign_vif_chanctx+0x1a9/0x770 [] __ieee80211_vif_release_channel+0x70/0x130 [] ieee80211_vif_release_channel+0x43/0xb0 [] ieee80211_stop_ap+0x21e/0x5a0 [] __cfg80211_stop_ap+0x85/0x520 [] __cfg80211_leave+0x68/0x120 [] cfg80211_leave+0x28/0x40 [] cfg80211_netdev_notifier_call+0x373/0x6b0 [] notifier_call_chain+0x55/0x110 [] raw_notifier_call_chain+0x11/0x20 [] call_netdevice_notifiers_info+0x30/0x60 [] __dev_close_many+0x59/0xf0 [] dev_close_many+0x81/0x120 [] rollback_registered_many+0x115/0x2a0 [] unregister_netdevice_many+0x16/0xa0 [] ieee80211_remove_interfaces+0x121/0x1b0 [] ieee80211_unregister_hw+0x56/0x110 [] ath10k_mac_unregister+0x14/0x60 [ath10k_core] [] ath10k_core_unregister+0x27/0x40 [ath10k_core] [] ath10k_pci_remove+0x44/0xa0 [ath10k_pci] [] pci_device_remove+0x28/0x60 [] __device_release_driver+0x64/0xd0 [] driver_detach+0xb8/0xc0 [] bus_remove_driver+0x4a/0xb0 [] driver_unregister+0x27/0x50 Signed-off-by: Michal Kazior Signed-off-by: Johannes Berg

mac80211: make ieee80211_vif_use_reserved_switch static

2014-08-26T09:15:35Z

Reorder some code to make ieee80211_vif_use_reserved_switch() static, no other changes. Signed-off-by: Johannes Berg

mac80211: ignore AP_VLAN in ieee80211_recalc_chanctx_chantype

2014-08-26T09:12:37Z

When bringing down the AP, a WARN_ON is hit because the bss config chandef is empty here. Since AP_VLAN channel settings do not matter for anything chanctx related (always inherits the settings from the AP interface), let's just ignore it here. Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg

mac80211: fix channel switch for chanctx-based drivers

2014-08-22T21:45:49Z

The new_ctx pointer is set only for non-chanctx drivers. This yielded a crash for chanctx-based drivers during channel switch finalization: BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 IP: ieee80211_vif_use_reserved_switch+0x71c/0xb00 [mac80211] Use an adequate chanctx pointer to fix this. Reported-by: Linus Torvalds Signed-off-by: Michal Kazior Signed-off-by: Linus Torvalds

mac80211: suppress unused variable warning without lockdep

2014-07-18T07:47:26Z

When lockdep isn't compiled, a local variable isn't used (it's only in a macro argument), annotate it to suppress the compiler warning. Signed-off-by: Johannes Berg

mac80211: use chanctx reservation for STA CSA

2014-06-25T16:06:20Z

Channel switch finalization is now 2-step. First step is when driver calls chswitch_done(), the other is when reservation is actually finalized (which be defered for in-place reservation). It is now safe to call ieee80211_chswitch_done() more than once. Also remove the ieee80211_vif_change_channel() because it is no longer used. Signed-off-by: Michal Kazior Signed-off-by: Johannes Berg