iwl4965_rx_mpdu_res_start is not 4695 specific, so rename it to more
general name iwl_rx_mpdu_res_start.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Rename rxq->dma_addr to rxq->bd_dma to better emphasize that the
physical address stands for the receive buffer descriptor's address.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Fairly complex code in iwlagn_tx_status_reply_tx handle the status reports for
aggregated packet batches sent by the NIC. This code aims to handle the case
where the NIC retransmits failed packets from a previous batch; the status
information for these packets can sometimes be inserted in the middle of a
batch and are actually not in order by sequence number! (I verified this can
happen with printk's in the function.)

The code in question adaptively identifies the "first" frame of the batch,
taking into account that it may not be the one corresponding to the first agg
status report, and also handles the case when the set of sent packets wraps the
256-character entry buffer. It generates the agg->bitmap field of sent packets
which is later compared to the BlockAck response from the receiver to see which
frames of those sent in this batch were ACKed. A small logic error (wrapping by
0xff==255 instead of 0x100==256) was causing the agg->bitmap to be set
incorrectly.

Fix this wrapping code, and add extensive comments to clarify what is going on.
Signed-off-by: NDaniel Halperin <dhalperi@cs.washington.edu>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

In "iwlwifi: make scan antenna forcing more generic"
I introduced generic scan RX antenna forcing, which
here I rename to make it more evident. Also add scan
TX antenna forcing, since I will need that as well.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Currently, the driver allocates up to 19 skb pointers
for each TFD, of which we have 256 per queue. This
means that for each TX queue, we allocate 19k/38k
(an order 4 or 5 allocation on 32/64 bit respectively)
just for each queue's "txb" array, which contains only
the SKB pointers.

However, due to the way we use these pointers only the
first one can ever be assigned. When the driver was
initially written, the idea was that it could be
passed multiple SKBs for each TFD and attach all
those to implement gather DMA. However, due to
constraints in the userspace API and lack of TCP/IP
level checksumming in the device, this is in fact not
possible. And even if it were, the SKBs would be
chained, and we wouldn't need to keep pointers to
each anyway.

Change this to only keep track of one SKB per TFD,
and thereby reduce memory consumption to just one
pointer per TFD, which is an order 0 allocation per
transmit queue.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

This can now be much better achieved using
tracing and post-processing of the trace,
rather than doing the processing in place
in the driver, so remove a lot of code.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

For probe request frames sent during scan, we
should use the virtual interface's mac address
that the scan was initiated on to avoid issues
when the wrong address is used.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Port of internal scan to iwl3945 missed introduction
of iwl3945_get_single_channel_for_scan.

Fix the following bug by introducing the iwl3945_get_single_channel_for_scan
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2208Signed-off-by: NAbhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

This reverts commit a2064b7a.

when CONFIG_IWLAGN=n:

drivers/net/wireless/iwlwifi/iwl-rx.c:254: error: 'struct iwl_priv' has no member named '_agn'
drivers/net/wireless/iwlwifi/iwl-rx.c:303: error: 'struct iwl_priv' has no member named '_agn'
drivers/net/wireless/iwlwifi/iwl-rx.c:304: error: 'struct iwl_priv' has no member named '_agn'
drivers/net/wireless/iwlwifi/iwl-rx.c:305: error: 'struct iwl_priv' has no member named '_agn'
drivers/net/wireless/iwlwifi/iwl-rx.c:306: error: 'struct iwl_priv' has no member named '_agn'

and many more.

Conflicts:

	drivers/net/wireless/iwlwifi/iwl-agn-debugfs.c
	drivers/net/wireless/iwlwifi/iwl-debugfs.c
	drivers/net/wireless/iwlwifi/iwl-dev.h
	drivers/net/wireless/iwlwifi/iwl-rx.c
Reported-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

switch and while statements don't need semicolons at end of statement

[ Fixup minor conflicts with recent wimax merge... -DaveM ]
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are a few places where sta_lock is used, but the
station information protected by it is accessed outside
of the lock. Address this in two ways, if the access
won't sleep then just move the access into the lock, if
the access can sleep then copy the needed station
information to the stack to be accessed without risk of
it changing while access in progress.

Additionally, a number of other places access station
station information without holding the sta_lock, fix
those as well.
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

This function is only used by the agn drivers,
so doesn't have to be in core and exported.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

agn and 3945 has different statistics_notif data structure; since 3945
has it statistics_notif data structure inside the _3945 portion of
iwl_priv, it make sense to move the agn statistics_notif into _agn portion.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

This function is now only used for the special
IBSS BSSID station, so rename it to indicate
this. The new name is iwl_add_bssid_station.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

mac80211 allows us to store private data per
station, so put the station ID there. This
allows us to avoid the station ID lookup when
removing regular stations. To also be able to
avoid the lookup to remove the special IBSS
BSSID station, track its ID in the per-vif
private data.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Rather than keeping every bit of information
around in priv and the virtual interface, add
a virtual interface to many functions and use
the information directly from it.

This removes beacon_int, assoc_capability and
assoc_id from struct iwl_priv.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Currently iwlwifi will eventually exhaust the station
table when adding the BSSID station for IBSS mode,
unless the interface is set down.

The new mac80211 ibss joined/left notification allows
us to fix that easily by moving the code to add the
IBSS station to the notification, and also adding
code to remove it again when we leave the IBSS.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Some future hardware will also require some antenna
overrides so make the current logic more generic;
right now it is semantically based on a workaround
for off-channel reception but the reasons for the
new antenna overrides will be different.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Monitor mode operation need not (and probably should
not) affect scanning this way since real monitoring
can not properly happen while scanning anyway.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Some definition for eeprom apply to more than 5000 series device, change
the name to reflect it for easy reading.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Scan requesting doesn't need to be asynchronous
since all code paths leading up to it can sleep.
Make the scan request a new util operation that
is hw-specific (to account for 3945 vs. agn)
and call it right in place.

This patch moves a lot of code into iwlagn as
it need not be in iwlcore.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

We used to free all the Tx queues memory when interface is brought
down and reallocate them again in interface up. This requires
order-4 allocation for txq->cmd[]. In situations like s2ram, this
usually leads to allocation failure in the memory subsystem. The
patch fixed this problem by allocating the Tx queues memory only at
the first time. Later iwl_down/iwl_up only initialize but don't
free and reallocate them. The memory is freed at the device removal
time. BTW, we have already done this for the Rx queue.

This fixed bug https://bugzilla.kernel.org/show_bug.cgi?id=15551Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Acked-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Update to include additional tx command response status for "_agn"
devices.

The following status indicate the transmission was postponed:
  TX_STATUS_POSTPONE_DELAY
  TX_STATUS_POSTPONE_FEW_BYTES
  TX_STATUS_POSTPONE_BT_PRIO
  TX_STATUS_POSTPONE_QUIET_PERIOD
  TX_STATUS_POSTPONE_CALC_TTAK
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

The last_phy_res[100] variable is used in an odd
way. The first byte of it is used as a flag, and
the rest as the data. Thus, the array need only
be 61 bytes, since it is just the flag and a
struct iwl_rx_phy_res (which is 60 bytes).

Clean this up by splitting the variable into two:
last_phy_res and last_phy_res_valid, using correct
types for both (struct and bool). While doing all
this also move the variables to the _agn part of
the hw-specific union since they only apply to
A-MPDUs.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Includes minor improvements in debugging messages in iwl-4965.c,
function iwl4965_is_temp_calib_needed().
Signed-off-by: NFrans Pop <elendil@planet.nl>
Cc: Zhu Yi <yi.zhu@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Intel Linux Wireless <ilw@linux.intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

In iwl_rx_queue_reset(), we didn't clear the rxq->queue[]. This might
cause the same rxb appears on multiple places in rxq->queue. Although
this won't cause any problem because of the read and write pointers
protection in rxq, we'd better clear it to avoid misleading.
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Remove skb_linearize() in the iwlwifi drivers since
mac80211 supports paged rx SKBs now.
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

We go to great lengths to calculate this value
that is never used by mac80211. Additionally,
it is now deprecated by mac80211 and is causing
driver compilation to give warnings.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Move more functions only used by agn driver from iwlcore to iwlagn.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Identify the rx functions only used by agn driver and move those from
iwlcore to iwlagn.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Identify the tx functions only used by agn driver and move those from
iwlcore to iwlagn.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

agn module parameter data structure shared by all agn devices, move it
iwl-agn-lib.c file.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>

Multiple iwlagn based devices share the same common functions.
Move those functions from iwl-5000.c to iwl-agn-lib.c file.
Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: NReinette Chatre <reinette.chatre@intel.com>