linux-toradex.git/net/mac80211/aes_ccm.c, branch v4.2.4

mac80211: Switch to new AEAD interface

2015-05-28T03:23:20+00:00

This patch makes use of the new AEAD interface which uses a single
SG list instead of separate lists for the AD and plain text.

Tested-by: Johannes Berg 
Signed-off-by: Herbert Xu

mac80211: Include crypto/aead.h

2015-04-23T06:18:11+00:00

All users of AEAD should include crypto/aead.h instead of
include/linux/crypto.h.

Signed-off-by: Herbert Xu 
Acked-by: David S. Miller

mac80111: aes_ccm: cleanup ieee80211_aes_key_setup_encrypt()

2015-03-30T08:40:03+00:00

This code is written using an anti-pattern called "success handling"
which makes it hard to read, especially if you are used to normal kernel
style.  It should instead be written as a list of directives in a row
with branches for error handling.

Signed-off-by: Dan Carpenter 
Acked-by: Ard Biesheuvel 
Signed-off-by: Johannes Berg

mac80111: Add CCMP-256 cipher

2015-01-27T10:07:35+00:00

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 
[squash ccmp256 -> mic_len argument change]
Signed-off-by: Johannes Berg

mac80211: Fix regression that triggers a kernel BUG with CCMP

2014-11-06T11:42:22+00:00

Commit 7ec7c4a9a686c608315739ab6a2b0527a240883c (mac80211: port CCMP to
cryptoapi's CCM driver) introduced a regression when decrypting empty
packets (data_len == 0). This will lead to backtraces like:

(scatterwalk_start) from [] (scatterwalk_map_and_copy+0x2c/0xa8)
(scatterwalk_map_and_copy) from [] (crypto_ccm_decrypt+0x7c/0x25c)
(crypto_ccm_decrypt) from [] (ieee80211_aes_ccm_decrypt+0x160/0x170)
(ieee80211_aes_ccm_decrypt) from [] (ieee80211_crypto_ccmp_decrypt+0x1ac/0x238)
(ieee80211_crypto_ccmp_decrypt) from [] (ieee80211_rx_handlers+0x870/0x1d24)
(ieee80211_rx_handlers) from [] (ieee80211_prepare_and_rx_handle+0x8a0/0x91c)
(ieee80211_prepare_and_rx_handle) from [] (ieee80211_rx+0x568/0x730)
(ieee80211_rx) from [] (__carl9170_rx+0x94c/0xa20)
(__carl9170_rx) from [] (carl9170_rx_stream+0x1fc/0x320)
(carl9170_rx_stream) from [] (carl9170_usb_tasklet+0x80/0xc8)
(carl9170_usb_tasklet) from [] (tasklet_hi_action+0x88/0xcc)
(tasklet_hi_action) from [] (__do_softirq+0xcc/0x200)
(__do_softirq) from [] (irq_exit+0x80/0xe0)
(irq_exit) from [] (handle_IRQ+0x64/0x80)
(handle_IRQ) from [] (__irq_svc+0x40/0x4c)
(__irq_svc) from [] (arch_cpu_idle+0x2c/0x34)

Such packets can appear for example when using the carl9170 wireless driver
because hardware sometimes generates garbage when the internal FIFO overruns.

This patch adds an additional length check.

Cc: stable@vger.kernel.org
Fixes: 7ec7c4a9a686 ("mac80211: port CCMP to cryptoapi's CCM driver")
Acked-by: Ard Biesheuvel 
Signed-off-by: Ronald Wahl 
Signed-off-by: Johannes Berg

mac80211: remove VLAIS usage from mac80211

2014-04-09T08:55:27+00:00

Replaced the use of a Variable Length Array In Struct (VLAIS) with a
C99 compliant equivalent. This is the original VLAIS struct.

struct {
	struct aead_request     req;
	u8                      priv[crypto_aead_reqsize(tfm)];
} aead_req;

This patch instead allocates the appropriate amount of memory using a
char array.

The new code can be compiled with both gcc and clang.

Signed-off-by: Jan-Simon Möller 
Signed-off-by: Behan Webster 
[small style cleanups]
Signed-off-by: Johannes Berg

mac80211: port CCMP to cryptoapi's CCM driver

2013-10-11T13:38:20+00:00

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 
Signed-off-by: Johannes Berg

wireless: move crypto constants to ieee80211.h

2013-05-16T20:39:41+00:00

mac80211 and the Intel drivers all define crypto
constants, move them to ieee80211.h instead.

Reviewed-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

mac80211: use AES_BLOCK_SIZE

2011-07-08T15:11:24+00:00

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 
Signed-off-by: John W. Linville

mac80211: Fix warnings due to -Wunused-but-set-variable

2011-04-26T19:50:31+00:00

These warnings are exposed by gcc 4.6.
net/mac80211/sta_info.c: In function 'sta_info_cleanup_expire_buffered':
net/mac80211/sta_info.c:590:32: warning: variable 'sdata' set but not used
net/mac80211/ibss.c: In function 'ieee80211_rx_mgmt_auth_ibss':
net/mac80211/ibss.c:43:34: warning: variable 'status_code' set but not used
net/mac80211/work.c: In function 'ieee80211_send_assoc':
net/mac80211/work.c:203:9: warning: variable 'len' set but not used
net/mac80211/tx.c: In function '__ieee80211_parse_tx_radiotap':
net/mac80211/tx.c:1039:35: warning: variable 'sband' set but not used
net/mac80211/mesh.c: In function 'ieee80211_mesh_rx_queued_mgmt':
net/mac80211/mesh.c:616:28: warning: variable 'ifmsh' set but not used
 ...

Signed-off-by: Rajkumar Manoharan 
Signed-off-by: John W. Linville