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2008-03-27mac80211: fix wrong Rx A-MPDU control via debugfsRon Rindjunsky1-0/+1
This patch eliminate the use of buf_size as a trigger in favor of a new flag to control Rx A-MPDU sessions through debugfs Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: add PLINK_ prefix and kernel doc to enum plink_stateLuis Carlos Cobo1-9/+22
Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: remove STA entries when taking down interfaceJohannes Berg1-1/+1
When we take down an interface, we need to remove the STA info items that belong to it because otherwise we might invoke a sta_notify() callback in the driver when we later delete the STA entries, but in that case the driver will already have removed its knowledge of the interface they belonged to leading to confusion. Also, we could invoke the set_tim() callback after the driver removed its knowledge of the interface, which can lead to a crash if it requests a beacon with a then-invalid vif pointer! A side effect of this patch is that, because it was easier, it disallows changing the WDS peer while an interface is up. Should that actually be necessary, it can be added back, but the WDS peer STA entry may not be added while the interface is UP so for now I've simplified the WDS peer's STA entry lifetime management. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: clean up sta_info and document lockingJohannes Berg1-53/+82
This patch cleans up the sta_info struct and documents how each set of variables is locked. Notably, flags locking is completely missing. It also adds kernel-doc for some (but not all yet) members of the struct. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: split sta_info_addJohannes Berg1-5/+12
sta_info_add() has two functions: allocating a station info structure and inserting it into the hash table/list. Splitting these two functions allows allocating with GFP_KERNEL in many places instead of GFP_ATOMIC which is now required by the RCU protection. Additionally, in many places RCU protection is now no longer needed at all because between sta_info_alloc() and sta_info_insert() the caller owns the structure. This fixes a few race conditions with setting initial flags and similar, but not all (see comments in ieee80211_sta.c and cfg.c). More documentation on the existing races will be in a follow-up patch. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: RCU-ify STA info structure accessJohannes Berg1-19/+42
This makes access to the STA hash table/list use RCU to protect against freeing of items. However, it's not a true RCU, the copy step is missing: whenever somebody changes a STA item it is simply updated. This is an existing race condition that is now somewhat understandable. This patch also fixes the race key freeing vs. STA destruction by making sure that sta_info_destroy() is always called under RTNL and frees the key. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: reorder a few fields in sta_infoJohannes Berg1-2/+2
Three __le16s followed by an enum (int) leave a two-byte hole of padding which we can use for two of the other fields. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: clean up mesh RX path a bit moreJohannes Berg1-0/+8
Moves another ifdef into the sta_info header file in favour of compiling more code even w/o CONFIG_MAC80211_MESH. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Luis Carlos Cobo <luisca@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: clean up mesh codeJohannes Berg1-2/+0
Various cleanups, reducing the #ifdef mess and other things. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-06mac80211: mesh data structures and first mesh changesLuis Carlos Cobo1-0/+30
Includes integration in struct sta_info of mesh peer link elements, previously on their own mesh peer link table. Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: remove STA infos last_ack stuffJohannes Berg1-4/+0
These things aren't used and the only possible use is within rate control algorithms, however those can, if they need it, keep track of it in their private data. last_ack_ms isn't even updated so completely useless. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: atomically check whether STA exists alreadyJohannes Berg1-2/+2
When a STA structure is added, it is often checked whether it already exists before adding it. This, however, isn't done atomically so there is a race condition that could lead to two STA structures being added with the same MAC address. This patch changes sta_info_add() to return an ERR_PTR in case of failure and adds the failure mode -EEXIST when the STA already exists. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: Luis Carlos Cobo <luisca@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: rework TX filtered frame codeJohannes Berg1-2/+4
This reworks the code for TX filtered frames, splitting it out to a new function to handle those cases, making the clear instruction a flag and renaming a few things to be easier to understand and less Atheros hardware specific. Finally, it also makes the comments explain more. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: consolidate TIM handling codeJohannes Berg1-1/+3
This consolidates all TIM handling code to avoid re-introducing errors with the bitmap/set_tim order and to reduce code. While reading the code I noticed a possible problem so I also added a comment about that. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: remove sta TIM flag, fix expiry TIM handlingJohannes Berg1-8/+6
The TIM flag that is kept in each station's info is completely useless, there's no code (aside from the debugfs display code) checking it, hence it can be removed. While doing that, I noticed that the TIM handling is broken when buffered frames expire, so fix that. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: convert sta_info.pspoll to a flagJohannes Berg1-1/+2
This doesn't really need to be a full int variable since it's just a flag to indicate a PS-poll is in progress. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: remove port control enable switch, clean up sta flagsJohannes Berg1-15/+29
This patch removes the 802.1X port acess control enable flag since it is not required. Instead, set the authorized flag for each station that we normally communicate with (WDS peers, IBSS peers and APs we're associated to) and require hostapd to set the authorized flag for all stations when port control is not enabled. Also, since I was working in that area, this documents station flags and removes the unused "permanent" one. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29cfg80211 API for channels/bitrates, mac80211 and driver conversionJohannes Berg1-5/+5
This patch creates new cfg80211 wiphy API for channel and bitrate registration and converts mac80211 and drivers to the new API. The old mac80211 API is completely ripped out. All drivers (except ath5k) are updated to the new API, in many cases I expect that optimisations can be done. Along with the regulatory code I've also ripped out the IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag, I believe it to be unnecessary if the hardware simply gives us whatever channels it wants to support and we then enable/disable them as required, which is pretty much required for travelling. Additionally, the patch adds proper "basic" rate handling for STA mode interface, AP mode interface will have to have new API added to allow userspace to set the basic rate set, currently it'll be empty... However, the basic rate handling will need to be moved to the BSS conf stuff. I do expect there to be bugs in this, especially wrt. transmit power handling where I'm basically clueless about how it should work. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: A-MPDU add debugfs supportRon Rindjunsky1-0/+1
This patch adds A-MPDU status report per STA to the debugfs. The option to de/activate A-MPDU through debugfs is also present. Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-02-29mac80211: A-MPDU Tx add MLME structuresRon Rindjunsky1-3/+33
This patch adds the needed structures to describe the Tx aggregation MLME per STA new: - struct tid_ampdu_tx: TID aggregation information (Tx) changed: - struct sta_ampdu_mlme: Tx aggregation information per TID and dialog token creator were added - struct sta_info: tid_to_tx_q added for tid<->tx queue mapping Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-01-28mac80211: A-MPDU Rx add MLME structuresRon Rindjunsky1-0/+47
This patch adds the needed structures to describe the Rx aggregation MLME per STA new: - struct tid_ampdu_rx: TID aggregation information (Rx) - struct sta_ampdu_mlme: MLME aggregation information for STA changed: - struct sta_info: ampdu_mlme added to describe A-MPDU MLME per STA, and timer_to_tid added to map timer id into TID Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28mac80211: adding 802.11n HT framework definitionsRon Rindjunsky1-0/+3
New structures: - ieee80211_ht_info: describing STA's HT capabilities - ieee80211_ht_bss_info: describing BSS's HT characteristics Changed structures: - ieee80211_hw_mode: now also holds PHY HT capabilities for each HW mode - ieee80211_conf: ht_conf holds current self HT configuration ht_bss_conf holds current BSS HT configuration - flag IEEE80211_CONF_SUPPORT_HT_MODE added to indicate if HT use is desired - sta_info: now also holds Peer's HT capabilities Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[MAC80211]: kill vlan_idJohannes Berg1-2/+0
Each station has a vlan_id that is useless. Remove it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[MAC80211]: make assoc_ap a flagJohannes Berg1-3/+2
The sta_info.assoc_ap value is used as a flag, move it into flags. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[MAC80211]: remove fake set_key() callJohannes Berg1-4/+0
Remove adding a fake key with a NONE key algorithm for each associated STA. If we have hardware with such TX filtering we should probably extend the sta_table_notification() callback with the sta information instead; the fact that it's treated as a key for some atheros hardware shouldn't bother the stack. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[MAC80211]: remove unused ioctls (2)Johannes Berg1-4/+0
The ioctls * PRISM2_PARAM_STA_ANTENNA_SEL * PRISM2_PARAM_TX_POWER_REDUCTION * PRISM2_PARAM_DEFAULT_WEP_ONLY are not used by hostapd or wpa_supplicant. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[MAC80211]: improve locking of sta_info related structuresMichael Wu1-4/+7
The sta_info code has some awkward locking which prevents some driver callbacks from being allowed to sleep. This patch makes the locking more focused so code that calls driver callbacks are allowed to sleep. It also converts sta_lock to a rwlock. Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-05-05[MAC80211]: Add debugfs attributes.Jiri Benc1-0/+19
Export various mac80211 internal variables through debugfs. Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-05-05[MAC80211]: Add mac80211 wireless stack.Jiri Benc1-0/+145
Add mac80211, the IEEE 802.11 software MAC layer. Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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