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2014-07-076lowpan: mac802154: fix coding style issuesVarka Bhadram
This patch fixed the coding style issues reported by checkpatch.pl following issues fixed: CHECK: Alignment should match open parenthesis WARNING: line over 80 characters CHECK: Blank lines aren't necessary before a close brace '}' WARNING: networking block comments don't use an empty /* line, use /* Comment... WARNING: Missing a blank line after declarations WARNING: networking block comments start with * on subsequent lines CHECK: braces {} should be used on all arms of this statement Signed-off-by: Varka Bhadram <varkab@cdac.in> Tested-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-06mac802154: llsec: add forgotten list_del_rcu in key removalPhoebe Buckheister
During key removal, the key object is freed, but not taken out of the llsec key list properly. Fix that. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-22mac802154: llsec: correctly lookup implicit-indexed keysPhoebe Buckheister
Key id comparison for type 1 keys (implicit source, with index) should return true if mode and id are equal, not false. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-22mac802154: llsec: fold useless return value checkPhoebe Buckheister
llsec_do_encrypt will never return a positive value, so the restriction to 0-or-negative on return is useless. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-22mac802154: llsec: fix incorrect lock pairingPhoebe Buckheister
In encrypt, sec->lock is taken with read_lock_bh, so in the error path, we must read_unlock_bh. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-16ieee802154, mac802154: implement devkey record optionPhoebe Buckheister
The 802.15.4-2011 standard states that for each key, a list of devices that use this key shall be kept. Previous patches have only considered two options: * a device "uses" (or may use) all keys, rendering the list useless * a device is restricted to a certain set of keys Another option would be that a device *may* use all keys, but need not do so, and we are interested in the actual set of keys the device uses. Recording keys used by any given device may have a noticable performance impact and might not be needed as often. The common case, in which a device will not switch keys too often, should still perform well. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-16mac802154: add llsec decryption methodPhoebe Buckheister
Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-16mac802154: add llsec encryption methodPhoebe Buckheister
Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-16mac802154: add llsec structures and mutatorsPhoebe Buckheister
This patch adds containers and mutators for the major ieee802154_llsec structures to mac802154. Most of the (rather simple) ieee802154_llsec structs are wrapped only to provide an rcu_head for orderly disposal, but some structs - llsec keys notably - require more complex bookkeeping. Since each llsec key may be referenced by a number of llsec key table entries (with differing key ids, but the same actual key), we want to save memory and not allocate crypto transforms for each entry in the table. Thus, the mac802154 llsec key is reference-counted instead. Further, each key will have four associated crypto transforms - three CCM transforms for the authsizes 4/8/16 and one CTR transform for unauthenticated encryption. If we had a CCM* transform that allowed authsize 0, and authsize as part of requests instead of transforms, this would not be necessary. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>