[PATCH] ieee80211: Added handle_deauth() callback, enhanced tkip/ccmp support of varying hw/sw offload

tree de81b55e78e85997642c651ea677078d0554a14f
parent c8030da8c159f8b82712172a6748a42523aea83a
author James Ketrenos <jketreno@linux.intel.com> 1127104380 -0500
committer James Ketrenos <jketreno@linux.intel.com> 1127315225 -0500

Added handle_deauth() callback.
Enhanced crypt_{tkip,ccmp} to support varying splits of HW/SW offload.
Changed channel freq to u32 from u16.
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 29 insertions, 12 deletions

diff --git a/net/ieee80211/ieee80211_crypt_ccmp.c b/net/ieee80211/ieee80211_crypt_ccmp.c
index a3dc5712b98b..081d8575dbb1 100644
--- a/net/ieee80211/ieee80211_crypt_ccmp.c
+++ b/net/ieee80211/ieee80211_crypt_ccmp.c
@@ -191,26 +191,18 @@ static void ccmp_init_blocks(struct crypto_tfm *tfm,
         ieee80211_ccmp_aes_encrypt(tfm, b0, s0);
 }
 
-static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
+static int ieee80211_ccmp_hdr(struct sk_buff *skb, int hdr_len, void *priv)
 {
         struct ieee80211_ccmp_data *key = priv;
-        int data_len, i, blocks, last, len;
-        u8 *pos, *mic;
-        struct ieee80211_hdr_4addr *hdr;
-        u8 *b0 = key->tx_b0;
-        u8 *b = key->tx_b;
-        u8 *e = key->tx_e;
-        u8 *s0 = key->tx_s0;
+        int i;
+        u8 *pos;
 
-        if (skb_headroom(skb) < CCMP_HDR_LEN ||
-            skb_tailroom(skb) < CCMP_MIC_LEN || skb->len < hdr_len)
+        if (skb_headroom(skb) < CCMP_HDR_LEN || skb->len < hdr_len)
                 return -1;
 
-        data_len = skb->len - hdr_len;
         pos = skb_push(skb, CCMP_HDR_LEN);
         memmove(pos, pos + CCMP_HDR_LEN, hdr_len);
         pos += hdr_len;
-        mic = skb_put(skb, CCMP_MIC_LEN);
 
         i = CCMP_PN_LEN - 1;
         while (i >= 0) {
@@ -229,6 +221,30 @@ static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
         *pos++ = key->tx_pn[1];
         *pos++ = key->tx_pn[0];
 
+        return CCMP_HDR_LEN;
+}
+
+static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+        struct ieee80211_ccmp_data *key = priv;
+        int data_len, i, blocks, last, len;
+        u8 *pos, *mic;
+        struct ieee80211_hdr_4addr *hdr;
+        u8 *b0 = key->tx_b0;
+        u8 *b = key->tx_b;
+        u8 *e = key->tx_e;
+        u8 *s0 = key->tx_s0;
+
+        if (skb_tailroom(skb) < CCMP_MIC_LEN || skb->len < hdr_len)
+                return -1;
+
+        data_len = skb->len - hdr_len;
+        len = ieee80211_ccmp_hdr(skb, hdr_len, priv);
+        if (len < 0)
+                return -1;
+
+        pos = skb->data + hdr_len + CCMP_HDR_LEN;
+        mic = skb_put(skb, CCMP_MIC_LEN);
         hdr = (struct ieee80211_hdr_4addr *)skb->data;
         ccmp_init_blocks(key->tfm, hdr, key->tx_pn, data_len, b0, b, s0);
 
@@ -429,6 +445,7 @@ static struct ieee80211_crypto_ops ieee80211_crypt_ccmp = {
         .name = "CCMP",
         .init = ieee80211_ccmp_init,
         .deinit = ieee80211_ccmp_deinit,
+        .build_iv = ieee80211_ccmp_hdr,
         .encrypt_mpdu = ieee80211_ccmp_encrypt,
         .decrypt_mpdu = ieee80211_ccmp_decrypt,
         .encrypt_msdu = NULL,