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

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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>
This commit is contained in:
James Ketrenos
2005-09-21 11:58:49 -05:00
committed by Jeff Garzik
parent 31696160c7
commit 31b59eaee8
6 changed files with 99 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
net/ieee80211/ieee80211_crypt_tkip.c
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@@ -260,35 +260,27 @@ static void tkip_mixing_phase2(u8 * WEPSeed, const u8 * TK, const u16 * TTAK,
#endif
}
static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
static u8 *ieee80211_tkip_hdr(struct sk_buff *skb, int hdr_len, void *priv)
{
struct ieee80211_tkip_data *tkey = priv;
int len;
u8 rc4key[16], *pos, *icv;
u8 *rc4key, *pos, *icv;
struct ieee80211_hdr_4addr *hdr;
u32 crc;
struct scatterlist sg;
hdr = (struct ieee80211_hdr_4addr *)skb->data;
if (tkey->ieee->tkip_countermeasures) {
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
"TX packet to " MAC_FMT "\n",
tkey->ieee->dev->name, MAC_ARG(hdr->addr1));
}
return -1;
}
if (skb_headroom(skb) < 8 || skb_tailroom(skb) < 4 ||
skb->len < hdr_len)
return -1;
if (skb_headroom(skb) < 8 || skb->len < hdr_len)
return NULL;
if (!tkey->tx_phase1_done) {
tkip_mixing_phase1(tkey->tx_ttak, tkey->key, hdr->addr2,
tkey->tx_iv32);
tkey->tx_phase1_done = 1;
}
rc4key = kmalloc(16, GFP_ATOMIC);
if (!rc4key)
return NULL;
tkip_mixing_phase2(rc4key, tkey->key, tkey->tx_ttak, tkey->tx_iv16);
len = skb->len - hdr_len;
@@ -297,9 +289,9 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
pos += hdr_len;
icv = skb_put(skb, 4);
*pos++ = rc4key[0];
*pos++ = rc4key[1];
*pos++ = rc4key[2];
*pos++ = *rc4key;
*pos++ = *(rc4key + 1);
*pos++ = *(rc4key + 2);
*pos++ = (tkey->key_idx << 6) | (1 << 5) /* Ext IV included */ ;
*pos++ = tkey->tx_iv32 & 0xff;
*pos++ = (tkey->tx_iv32 >> 8) & 0xff;
@@ -312,6 +304,38 @@ static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
icv[2] = crc >> 16;
icv[3] = crc >> 24;
return rc4key;
}
static int ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct ieee80211_tkip_data *tkey = priv;
int len;
const u8 *rc4key;
u8 *pos;
struct scatterlist sg;
if (tkey->ieee->tkip_countermeasures) {
if (net_ratelimit()) {
struct ieee80211_hdr_4addr *hdr =
(struct ieee80211_hdr_4addr *)skb->data;
printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
"TX packet to " MAC_FMT "\n",
tkey->ieee->dev->name, MAC_ARG(hdr->addr1));
}
return -1;
}
if (skb_tailroom(skb) < 4 || skb->len < hdr_len)
return -1;
len = skb->len - hdr_len;
pos = skb->data + hdr_len;
rc4key = ieee80211_tkip_hdr(skb, hdr_len, priv);
if (!rc4key)
return -1;
crypto_cipher_setkey(tkey->tfm_arc4, rc4key, 16);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);