diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-26 15:54:36 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-26 15:54:36 -0700 |
commit | 13220a94d35708d5378114e96ffcc88d0a74fe99 (patch) | |
tree | be6530677d5f9536c7211e05ba012923e4c0b307 /drivers/net/wireless/orinoco/mic.c | |
parent | 8690d8a9f6c2d5728a9c9f68231f1bb4de109e3a (diff) | |
parent | 08abe18af1f78ee80c3c3a5ac47c3e0ae0beadf6 (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.c | 79 |
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); +} |