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authorLinus Torvalds <torvalds@linux-foundation.org>2009-03-26 15:54:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-03-26 15:54:36 -0700
commit13220a94d35708d5378114e96ffcc88d0a74fe99 (patch)
treebe6530677d5f9536c7211e05ba012923e4c0b307 /drivers/net/wireless/orinoco/mic.c
parent8690d8a9f6c2d5728a9c9f68231f1bb4de109e3a (diff)
parent08abe18af1f78ee80c3c3a5ac47c3e0ae0beadf6 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1750 commits) ixgbe: Allow Priority Flow Control settings to survive a device reset net: core: remove unneeded include in net/core/utils.c. e1000e: update version number e1000e: fix close interrupt race e1000e: fix loss of multicast packets e1000e: commonize tx cleanup routine to match e1000 & igb netfilter: fix nf_logger name in ebt_ulog. netfilter: fix warning in ebt_ulog init function. netfilter: fix warning about invalid const usage e1000: fix close race with interrupt e1000: cleanup clean_tx_irq routine so that it completely cleans ring e1000: fix tx hang detect logic and address dma mapping issues bridge: bad error handling when adding invalid ether address bonding: select current active slave when enslaving device for mode tlb and alb gianfar: reallocate skb when headroom is not enough for fcb Bump release date to 25Mar2009 and version to 0.22 r6040: Fix second PHY address qeth: fix wait_event_timeout handling qeth: check for completion of a running recovery qeth: unregister MAC addresses during recovery. ... Manually fixed up conflicts in: drivers/infiniband/hw/cxgb3/cxio_hal.h drivers/infiniband/hw/nes/nes_nic.c
Diffstat (limited to 'drivers/net/wireless/orinoco/mic.c')
-rw-r--r--drivers/net/wireless/orinoco/mic.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/net/wireless/orinoco/mic.c b/drivers/net/wireless/orinoco/mic.c
new file mode 100644
index 00000000000..c03e7f54d1b
--- /dev/null
+++ b/drivers/net/wireless/orinoco/mic.c
@@ -0,0 +1,79 @@
+/* Orinoco MIC helpers
+ *
+ * See copyright notice in main.c
+ */
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/if_ether.h>
+#include <linux/scatterlist.h>
+#include <linux/crypto.h>
+
+#include "orinoco.h"
+#include "mic.h"
+
+/********************************************************************/
+/* Michael MIC crypto setup */
+/********************************************************************/
+int orinoco_mic_init(struct orinoco_private *priv)
+{
+ priv->tx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
+ if (IS_ERR(priv->tx_tfm_mic)) {
+ printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
+ "crypto API michael_mic\n");
+ priv->tx_tfm_mic = NULL;
+ return -ENOMEM;
+ }
+
+ priv->rx_tfm_mic = crypto_alloc_hash("michael_mic", 0, 0);
+ if (IS_ERR(priv->rx_tfm_mic)) {
+ printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
+ "crypto API michael_mic\n");
+ priv->rx_tfm_mic = NULL;
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+void orinoco_mic_free(struct orinoco_private *priv)
+{
+ if (priv->tx_tfm_mic)
+ crypto_free_hash(priv->tx_tfm_mic);
+ if (priv->rx_tfm_mic)
+ crypto_free_hash(priv->rx_tfm_mic);
+}
+
+int orinoco_mic(struct crypto_hash *tfm_michael, u8 *key,
+ u8 *da, u8 *sa, u8 priority,
+ u8 *data, size_t data_len, u8 *mic)
+{
+ struct hash_desc desc;
+ struct scatterlist sg[2];
+ u8 hdr[ETH_HLEN + 2]; /* size of header + padding */
+
+ if (tfm_michael == NULL) {
+ printk(KERN_WARNING "orinoco_mic: tfm_michael == NULL\n");
+ return -1;
+ }
+
+ /* Copy header into buffer. We need the padding on the end zeroed */
+ memcpy(&hdr[0], da, ETH_ALEN);
+ memcpy(&hdr[ETH_ALEN], sa, ETH_ALEN);
+ hdr[ETH_ALEN*2] = priority;
+ hdr[ETH_ALEN*2+1] = 0;
+ hdr[ETH_ALEN*2+2] = 0;
+ hdr[ETH_ALEN*2+3] = 0;
+
+ /* Use scatter gather to MIC header and data in one go */
+ sg_init_table(sg, 2);
+ sg_set_buf(&sg[0], hdr, sizeof(hdr));
+ sg_set_buf(&sg[1], data, data_len);
+
+ if (crypto_hash_setkey(tfm_michael, key, MIC_KEYLEN))
+ return -1;
+
+ desc.tfm = tfm_michael;
+ desc.flags = 0;
+ return crypto_hash_digest(&desc, sg, data_len + sizeof(hdr),
+ mic);
+}