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path: root/net/mac80211/wpa.c
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2015-01-27mac80111: Add BIP-GMAC-128 and BIP-GMAC-256 ciphersJouni Malinen
This allows mac80211 to configure BIP-GMAC-128 and BIP-GMAC-256 to the driver and also use software-implementation within mac80211 when the driver does not support this with hardware accelaration. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-27mac80111: Add BIP-CMAC-256 cipherJouni Malinen
This allows mac80211 to configure BIP-CMAC-256 to the driver and also use software-implementation within mac80211 when the driver does not support this with hardware accelaration. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-27mac80111: Add CCMP-256 cipherJouni Malinen
This allows mac80211 to configure CCMP-256 to the driver and also use software-implementation within mac80211 when the driver does not support this with hardware accelaration. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> [squash ccmp256 -> mic_len argument change] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-27mac80111: Add GCMP and GCMP-256 ciphersJouni Malinen
This allows mac80211 to configure GCMP and GCMP-256 to the driver and also use software-implementation within mac80211 when the driver does not support this with hardware accelaration. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> [remove a spurious newline] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-23mac80211: fix network header breakage during encryptionArik Nemtsov
When an IV is generated, only the MAC header is moved back. The network header location remains the same relative to the skb head, as the new IV is using headroom space that was reserved in advance. Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-09-08mac80211: annotate MMIC head/tailroom warningJohannes Berg
This message occasionally triggers for some people as in https://bugzilla.redhat.com/show_bug.cgi?id=1111740 but it's not clear which (headroom or tailroom) is at fault. Annotate the message a bit to get more information. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-07-21mac80211: fix a potential NULL access in ieee80211_crypto_hw_decryptMax Stepanov
The NULL pointer access could happen when ieee80211_crypto_hw_decrypt is called from ieee80211_rx_h_decrypt with the following condition: 1. rx->key->conf.cipher is not WEP, CCMP, TKIP or AES_CMAC 2. rx->sta is NULL When ieee80211_crypto_hw_decrypt is called, it verifies rx->sta->cipher_scheme and it will cause Oops if rx->sta is NULL. This path adds an addirional rx->sta == NULL verification in ieee80211_crypto_hw_decrypt for this case. Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25mac80211: add option to generate CCMP IVs only for mgmt framesMarek Kwaczynski
Some chips can encrypt managment frames in HW, but require generated IV in the frame. Add a key flag that allows us to achieve this. Signed-off-by: Marek Kwaczynski <marek.kwaczynski@tieto.com> [use BIT(0) to fill that spot, fix indentation] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04mac80211: add length check in ieee80211_is_robust_mgmt_frame()Johannes Berg
A few places weren't checking that the frame passed to the function actually has enough data even though the function clearly documents it must have a payload byte. Make this safer by changing the function to take an skb and checking the length inside. The old version is preserved for now as the rtl* drivers use it and don't have a correct skb. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04mac80211: drop unused param 'encrypted' from ccmp_special_blocks()Ard Biesheuvel
Commit 7ec7c4a9a686 ("mac80211: port CCMP to cryptoapi's CCM driver") resulted in the 'encrypted' param of ccmp_special_blocks() to be no longer used so it can be dropped from the prototype. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-01-07mac80211: clean up garbage in commentEmmanuel Grumbach
Not clear how this landed here. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25mac80211: add generic cipher scheme supportMax Stepanov
This adds generic cipher scheme support to mac80211, such schemes are fully under control by the driver. On hw registration drivers may specify additional HW ciphers with a scheme how these ciphers have to be handled by mac80211 TX/RR. A cipher scheme specifies a cipher suite value, a size of the security header to be added to or stripped from frames and how the PN is to be verified on RX. Signed-off-by: Max Stepanov <Max.Stepanov@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-11mac80211: port CCMP to cryptoapi's CCM driverArd Biesheuvel
Use the generic CCM aead chaining mode driver rather than a local implementation that sits right on top of the core AES cipher. This allows the use of accelerated implementations of either CCM as a whole or the CTR mode which it encapsulates. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-05-16wireless: move crypto constants to ieee80211.hJohannes Berg
mac80211 and the Intel drivers all define crypto constants, move them to ieee80211.h instead. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-15mac80211: use spin_lock_bh() for TKIP lockJohannes Berg
Since no driver calls the TKIP functions from interrupt context, there's no need to use spin_lock_irqsave(). Just use spin_lock_bh() (and spin_lock() in the TX path where we're in a BH or they're already disabled.) Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-12-05mac80211: add debug file for mic failureSaravana
The mic failure count provides the number of mic failures that have happened on a given key (without a countermeasure being started, since that would remove the key). Signed-off-by: Saravana <saravanad@posedge.com> [fix NULL pointer issues] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-10-17Merge branch 'for-john' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
2012-10-15mac80211: check if key has TKIP type before updating IVStanislaw Gruszka
This patch fix corruption which can manifest itself by following crash when switching on rfkill switch with rt2x00 driver: https://bugzilla.redhat.com/attachment.cgi?id=615362 Pointer key->u.ccmp.tfm of group key get corrupted in: ieee80211_rx_h_michael_mic_verify(): /* update IV in key information to be able to detect replays */ rx->key->u.tkip.rx[rx->security_idx].iv32 = rx->tkip_iv32; rx->key->u.tkip.rx[rx->security_idx].iv16 = rx->tkip_iv16; because rt2x00 always set RX_FLAG_MMIC_STRIPPED, even if key is not TKIP. We already check type of the key in different path in ieee80211_rx_h_michael_mic_verify() function, so adding additional check here is reasonable. Cc: stable@vger.kernel.org # 3.0+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-10-01mac80211: Fix FC masking in BIP AAD generationJouni Malinen
The bits used in the mask were off-by-one and ended up masking PwrMgt, MoreData, Protected fields instead of Retry, PwrMgt, MoreData. Fix this and to mask the correct fields. While doing so, convert the code to mask the full FC using IEEE80211_FCTL_* defines similarly to how CCMP AAD is built. Since BIP is used only with broadcast/multicast management frames, the Retry field is always 0 in these frames. The Protected field is also zero to maintain backwards compatibility. As such, the incorrect mask here does not really cause any problems for valid frames. In theory, an invalid BIP frame with Retry or Protected field set to 1 could be rejected because of BIP validation. However, no such frame should show up with standard compliant implementations, so this does not cause problems in normal BIP use. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-05-16mac80211: fix network header location when adding encryption headersArik Nemtsov
Update the location of the network header when adding encryption specific headers to a skb. This allows low-level drivers to use the (now correct) location of the network header. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-16mac80211: Add IV-room in the skb for TKIP and WEPJanusz.Dziedzic@tieto.com
Add IV-room in skb also for TKIP and WEP. Extend patch: "mac80211: support adding IV-room in the skb for CCMP keys" Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-13mac80211: linearize SKBs as needed for cryptoJohannes Berg
Not linearizing every SKB will help actually pass non-linear SKBs all the way up when on an encrypted connection. For now, linearize TKIP completely as it is lower performance and I don't quite grok all the details. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-16mac80211: fix tx->skb NULL pointer dereferenceYoni Divinsky
In function ieee80211_tx_h_encrypt the var info was initialized from tx->skb, since the fucntion is called after the function ieee80211_tx_h_fragment tx->skb is not valid anymore. Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-11mac80211: fix rx->key NULL pointer dereference in promiscuous modeStanislaw Gruszka
Since: commit 816c04fe7ef01dd9649f5ccfe796474db8708be5 Author: Christian Lamparter <chunkeey@googlemail.com> Date: Sat Apr 30 15:24:30 2011 +0200 mac80211: consolidate MIC failure report handling is possible to that we dereference rx->key == NULL when driver set RX_FLAG_MMIC_STRIPPED and not RX_FLAG_IV_STRIPPED and we are in promiscuous mode. This happen with rt73usb and rt61pci at least. Before the commit we always check rx->key against NULL, so I assume fix should be done in mac80211 (also mic_fail path has similar check). References: https://bugzilla.redhat.com/show_bug.cgi?id=769766 http://rt2x00.serialmonkey.com/pipermail/users_rt2x00.serialmonkey.com/2012-January/004395.html Cc: stable@vger.kernel.org # 3.0+ Reported-by: Stuart D Gathman <stuart@gathman.org> Reported-by: Kai Wohlfahrt <kai.scorpio@gmail.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-21mac80211: use skb list for fragmentsJohannes Berg
We are currently linking the skbs by using skb->next directly. This works, but the preferred way is to use a struct sk_buff_head instead. That also prepares for passing that to drivers directly. While at it I noticed we calculate the duration for fragments twice -- remove one of them. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-11mac80211: make sure hw_key exists before checking its flagsArik Nemtsov
Fixes a bug introduced in: commit 077a9154898b374f20555adc3f620cccd02581d6 Author: Arik Nemtsov <arik@wizery.com> Date: Sun Oct 23 08:21:41 2011 +0200 Reported-by: Arend van Spriel <arend@broadcom.com> Reported-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-08mac80211: support adding IV-room in the skb for CCMP keysArik Nemtsov
Some cards can generate CCMP IVs in HW, but require the space for the IV to be pre-allocated in the frame at the correct offset. Add a key flag that allows us to achieve this. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-10-11mac80211: move fragment flag to info flag as dont-fragmentJohannes Berg
The purpose of this is two-fold: 1) by moving it out of tx_data.flags, we can in another patch move the radiotap parsing so it no longer is in the hotpath 2) if a device implements fragmentation but can optionally skip it, the radiotap request for not doing fragmentation may be honoured Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-08mac80211: simplify RX PN/IV handlingJohannes Berg
The current rx->queue value is slightly confusing. It is set to 16 on non-QoS frames, including data, and then used for sequence number and PN/IV checks. Until recently, we had a TKIP IV checking bug that had been introduced in 2008 to fix a seqno issue. Before that, we always used TID 0 for checking the PN or IV on non-QoS packets. Go back to the old status for PN/IV checks using the TID 0 counter for non-QoS by splitting up the rx->queue value into "seqno_idx" and "security_idx" in order to avoid confusion in the future. They each have special rules on the value used for non- QoS data frames. Since the handling is now unified, also revert the special TKIP handling from my patch "mac80211: fix TKIP replay vulnerability". Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-08mac80211: use AES_BLOCK_SIZEJohannes Berg
mac80211 has a defnition of AES_BLOCK_SIZE and multiple definitions of AES_BLOCK_LEN. Remove them all and use crypto/aes.h. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-08mac80211: fix CMAC racesJohannes Berg
Just like TKIP and CCMP, CMAC has the PN race. It might not actually be possible to hit it now since there aren't multiple ACs for management frames, but fix it anyway. Also move scratch buffers onto the stack. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-08mac80211: fix CCMP racesJohannes Berg
Since we can process multiple packets at the same time for different ACs, but the PN is allocated from a single counter, we need to use an atomic value there. Use atomic64_t to make this cheaper on 64-bit platforms, other platforms will support this through software emulation, see lib/atomic64.c. We also need to use an on-stack scratch buf so that multiple packets won't corrupt each others scratch buffers. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-07-08mac80211: fix TKIP races, make API easier to useJohannes Berg
Our current TKIP code races against itself on TX since we can process multiple packets at the same time on different ACs, but they all share the TX context for TKIP. This can lead to bad IVs etc. Also, the crypto offload helper code just obtains the P1K/P2K from the cache, and can update it as well, but there's no guarantee that packets are really processed in order. To fix these issues, first introduce a spinlock that will protect the IV16/IV32 values in the TX context. This first step makes sure that we don't assign the same IV multiple times or get confused in other ways. Secondly, change the way the P1K cache works. I add a field "p1k_iv32" that stores the value of the IV32 when the P1K was last recomputed, and if different from the last time, then a new P1K is recomputed. This can cause the P1K computation to flip back and forth if packets are processed out of order. All this also happens under the new spinlock. Finally, because there are argument differences, split up the ieee80211_get_tkip_key() API into ieee80211_get_tkip_p1k() and ieee80211_get_tkip_p2k() and give them the correct arguments. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-27mac80211: fix rx->key NULL dereference during mic failureArik Nemtsov
Sometimes when reporting a MIC failure rx->key may be unset. This code path is hit when receiving a packet meant for a multicast address, and decryption is performed in HW. Fortunately, the failing key_idx is not used for anything up to (and including) usermode, so we allow ourselves to drop it on the way up when a key cannot be retrieved. Signed-off-by: Arik Nemtsov <arik@wizery.com> Cc: stable@kernel.org Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-05-02mac80211: consolidate MIC failure report handlingChristian Lamparter
Currently, mac80211 handles MIC failures differently depending on whenever they are detected by the stack's own software crypto or when are handed down from the driver. This patch tries to unify both by moving the special branch out of mac80211 rx hotpath and into into the software crypto part. This has the advantage that we can run a few more sanity checks on the data and verify if the key type was TKIP. This is very handy because several devices generate false postive MIC failure reports. Like carl9170, ath9k and wl12xx: <http://www.spinics.net/lists/linux-wireless/msg68494.html> "mac80211: report MIC failure for truncated packets in AP mode" Cc: Luciano Coelho <coelho@ti.com> Cc: Arik Nemtsov <arik@wizery.com> Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-03mac80211: Add testing functionality for TKIPJouni Malinen
TKIP countermeasures depend on devices being able to detect Michael MIC failures on received frames and for stations to report errors to the AP. In order to test that behavior, it is useful to be able to send out TKIP frames with incorrect Michael MIC. This testing behavior has minimal effect on the TX path, so it can be added to mac80211 for convenient use. The interface for using this functionality is a file in mac80211 netdev debugfs (tkip_mic_test). Writing a MAC address to the file makes mac80211 generate a dummy data frame that will be sent out using invalid Michael MIC value. In AP mode, the address needs to be for one of the associated stations or ff:ff:ff:ff:ff:ff to use a broadcast frame. In station mode, the address can be anything, e.g., the current BSSID. It should be noted that this functionality works correctly only when associated and using TKIP. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-02-03mac80211: Remove obsolete TKIP flexibilityJouni Malinen
The TKIP implementation was originally prepared to be a bit more flexible in the way Michael MIC TX/RX keys are configured. However, we are now taking care of the TX/RX MIC key swapping in user space, so this code will not be needed. Similarly, there were some remaining WPA testing code that won't be used in their current form. Remove the unneeded extra complexity. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-09-27mac80211: move packet flags into packetJohannes Berg
commit 8c0c709eea5cbab97fb464cd68b06f24acc58ee1 Author: Johannes Berg <johannes@sipsolutions.net> Date: Wed Nov 25 17:46:15 2009 +0100 mac80211: move cmntr flag out of rx flags moved the CMNTR flag into the skb RX flags for some aggregation cleanups, but this was wrong since the optimisation this flag tried to make requires that it is kept across the processing of multiple interfaces -- which isn't true for flags in the skb. The patch not only broke the optimisation, it also introduced a bug: under some (common!) circumstances the flag will be set on an already freed skb! However, investigating this in more detail, I found that most of the flags that we set should be per packet, _except_ for this one, due to a-MPDU processing. Additionally, the flags used for processing (currently just this one) need to be reset before processing a new packet. Since we haven't actually seen bugs reported as a result of the wrong flags handling (which is not too surprising -- the only real bug case I can come up with is an a-MSDU contained in an a-MPDU), I'll make a different fix for rc. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-16mac80211: remove unused status flag checksJohannes Berg
The decryption code verifies whether or not a given frame was decrypted and verified by hardware. This is unnecessary, as the crypto RX handler already does it long before the decryption code is even invoked, so remove that code to avoid confusion. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-08-16mac80211: use cipher suite selectorsJohannes Berg
Currently, mac80211 translates the cfg80211 cipher suite selectors into ALG_* values. That isn't all too useful, and some drivers benefit from the distinction between WEP40 and WEP104 as well. Therefore, convert it all to use the cipher suite selectors. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: Gertjan van Wingerde <gwingerde@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-07-08mac80211: remove wep dependencyJohn W. Linville
The current mac80211 code assumes that WEP is always available. If WEP fails to initialize, ieee80211_register_hw will always fail. In some cases (e.g. FIPS certification), the cryptography used by WEP is unavailable. However, in such cases there is no good reason why CCMP encryption (or even no link level encryption) cannot be used. So, this patch removes mac80211's assumption that WEP (and TKIP) will always be available for use. Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-06-15mac80211: Use a separate CCMP PN receive counter for management framesJouni Malinen
When management frame protection (IEEE 802.11w) is used, we must use a separate counter for tracking received CCMP packet number for the management frames. The previously used NUM_RX_DATA_QUEUESth queue was shared with data frames when QoS was not used and that can cause problems in detecting replays incorrectly for robust management frames. Add a new counter just for robust management frames to avoid this issue. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-01-19mac80211: move control.hw_key assignmentJohannes Berg
When mac80211 asks a driver to encrypt a frame, it must assign the control.hw_key pointer for it to know which key to use etc. Currently, mac80211 does this whenever it would software-encrypt a frame. Change the logic of this code to assign the hw_key pointer when selecting the key, and later check it when deciding whether to encrypt the frame or let it be encrypted by the hardware. This allows us to later simply skip the encryption function since it no longer modifies the TX control. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-11-18mac80211: trim RX dataJohannes Berg
The RX data contains the netdev, which is duplicated since we have the sdata, and the RX status pointer, which is duplicate since we have the skb. Remove those two fields to have fewer fields that depend on each other and simply load them as necessary. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-07-10cfg80211: use proper allocation flagsJohannes Berg
Instead of hardcoding GFP_ATOMIC everywhere, add a new function parameter that gets the flags from the caller. Obviously then I need to update all callers (all of them in mac80211), and it turns out that now it's ok to use GFP_KERNEL in almost all places. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-04-22nl80211: Add Michael MIC failure eventJouni Malinen
Define a new nl80211 event, NL80211_CMD_MICHAEL_MIC_FAILURE, to be used to notify user space about locally detected Michael MIC failures. This matches with the MLME-MICHAELMICFAILURE.indication() primitive. Since we do not actually have TSC in the skb anymore when mac80211_ev_michael_mic_failure() is called, that function is changed to take in the TSC as an optional parameter instead of as a requirement to include the TSC after the hdr field (which we did not really follow). For now, TSC is not included in the events from mac80211, but it could be added at some point. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-03-27mac80211: rewrite fragmentationJohannes Berg
Fragmentation currently uses an allocated array to store the fragment skbs, and then keeps track of which have been sent and which are still pending etc. This is rather complicated; make it simpler by just chaining the fragments into skb->next and removing from that list when sent. Also simplifies all code that needs to touch fragments, since it now only needs to walk the skb->next list. This is a prerequisite for fixing the stored packet code, which I need to do for proper aggregation packet storing. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: 802.11w - Optional software CCMP for management framesJouni Malinen
If driver/firmware/hardware does not support CCMP for management frames, it can now request mac80211 to take care of encrypting and decrypting management frames (when MFP is enabled) in software. The will need to add this new IEEE80211_KEY_FLAG_SW_MGMT flag when a CCMP key is being configured for TX side and return the undecrypted frames on RX side without RX_FLAG_DECRYPTED flag to use software CCMP for management frames (but hardware for data frames). Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-01-29mac80211: 802.11w - Add BIP (AES-128-CMAC)Jouni Malinen
Implement Broadcast/Multicast Integrity Protocol for management frame protection. This patch adds the needed definitions for the new information element (MMIE) and implementation for the new "encryption" type (though, BIP is actually not encrypting data, it provides only integrity protection). These routines will be used by a follow-on patch that enables BIP for multicast/broadcast robust management frames. Signed-off-by: Jouni Malinen <j@w1.fi> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>