diff options
Diffstat (limited to 'drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c')
| -rw-r--r-- | drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c | 42 |
1 files changed, 13 insertions, 29 deletions
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c index 2dc25cc2c726..e6648f7723ce 100644 --- a/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c +++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c @@ -67,7 +67,7 @@ static void *ieee80211_ccmp_init(int key_idx) struct ieee80211_ccmp_data *priv; priv = kzalloc(sizeof(*priv), GFP_ATOMIC); - if (priv == NULL) + if (!priv) goto fail; priv->key_idx = key_idx; @@ -90,7 +90,6 @@ fail: return NULL; } - static void ieee80211_ccmp_deinit(void *priv) { struct ieee80211_ccmp_data *_priv = priv; @@ -100,7 +99,6 @@ static void ieee80211_ccmp_deinit(void *priv) kfree(priv); } - static inline void xor_block(u8 *b, u8 *a, size_t len) { int i; @@ -109,8 +107,6 @@ static inline void xor_block(u8 *b, u8 *a, size_t len) b[i] ^= a[i]; } - - static void ccmp_init_blocks(struct crypto_tfm *tfm, struct rtl_80211_hdr_4addr *hdr, u8 *pn, size_t dlen, u8 *b0, u8 *auth, @@ -135,7 +131,7 @@ static void ccmp_init_blocks(struct crypto_tfm *tfm, if (a4_included) aad_len += 6; if (qc_included) { - pos = (u8 *) &hdr->addr4; + pos = (u8 *)&hdr->addr4; if (a4_included) pos += 6; qc = *pos & 0x0f; @@ -161,13 +157,13 @@ static void ccmp_init_blocks(struct crypto_tfm *tfm, * A4 (if present) * QC (if present) */ - pos = (u8 *) hdr; + pos = (u8 *)hdr; aad[0] = 0; /* aad_len >> 8 */ aad[1] = aad_len & 0xff; aad[2] = pos[0] & 0x8f; aad[3] = pos[1] & 0xc7; memcpy(aad + 4, hdr->addr1, 3 * ETH_ALEN); - pos = (u8 *) &hdr->seq_ctl; + pos = (u8 *)&hdr->seq_ctl; aad[22] = pos[0] & 0x0f; aad[23] = 0; /* all bits masked */ memset(aad + 24, 0, 8); @@ -185,19 +181,18 @@ static void ccmp_init_blocks(struct crypto_tfm *tfm, xor_block(auth, &aad[AES_BLOCK_LEN], AES_BLOCK_LEN); ieee80211_ccmp_aes_encrypt(tfm, auth, auth); b0[0] &= 0x07; - b0[14] = b0[15] = 0; + b0[14] = 0; + b0[15] = 0; ieee80211_ccmp_aes_encrypt(tfm, b0, s0); } - - static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv) { struct ieee80211_ccmp_data *key = priv; int data_len, i; u8 *pos; struct rtl_80211_hdr_4addr *hdr; - cb_desc *tcb_desc = (cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); + struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); if (skb_headroom(skb) < CCMP_HDR_LEN || skb_tailroom(skb) < CCMP_MIC_LEN || @@ -227,8 +222,7 @@ static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv) *pos++ = key->tx_pn[1]; *pos++ = key->tx_pn[0]; - - hdr = (struct rtl_80211_hdr_4addr *) skb->data; + hdr = (struct rtl_80211_hdr_4addr *)skb->data; if (!tcb_desc->bHwSec) { int blocks, last, len; u8 *mic; @@ -264,13 +258,12 @@ static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv) return 0; } - static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv) { struct ieee80211_ccmp_data *key = priv; u8 keyidx, *pos; struct rtl_80211_hdr_4addr *hdr; - cb_desc *tcb_desc = (cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); + struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE); u8 pn[6]; if (skb->len < hdr_len + CCMP_HDR_LEN + CCMP_MIC_LEN) { @@ -278,7 +271,7 @@ static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv) return -1; } - hdr = (struct rtl_80211_hdr_4addr *) skb->data; + hdr = (struct rtl_80211_hdr_4addr *)skb->data; pos = skb->data + hdr_len; keyidx = pos[3]; if (!(keyidx & (1 << 5))) { @@ -327,7 +320,6 @@ static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv) u8 *a = key->rx_a; int i, blocks, last, len; - ccmp_init_blocks(key->tfm, hdr, pn, data_len, b0, a, b); xor_block(mic, b, CCMP_MIC_LEN); @@ -366,7 +358,6 @@ static int ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv) return keyidx; } - static int ieee80211_ccmp_set_key(void *key, int len, u8 *seq, void *priv) { struct ieee80211_ccmp_data *data = priv; @@ -389,15 +380,15 @@ static int ieee80211_ccmp_set_key(void *key, int len, u8 *seq, void *priv) data->rx_pn[5] = seq[0]; } crypto_cipher_setkey((void *)data->tfm, data->key, CCMP_TK_LEN); - } else if (len == 0) + } else if (len == 0) { data->key_set = 0; - else + } else { return -1; + } return 0; } - static int ieee80211_ccmp_get_key(void *key, int len, u8 *seq, void *priv) { struct ieee80211_ccmp_data *data = priv; @@ -421,7 +412,6 @@ static int ieee80211_ccmp_get_key(void *key, int len, u8 *seq, void *priv) return CCMP_TK_LEN; } - static char *ieee80211_ccmp_print_stats(char *p, void *priv) { struct ieee80211_ccmp_data *ccmp = priv; @@ -436,12 +426,6 @@ static char *ieee80211_ccmp_print_stats(char *p, void *priv) return p; } -void ieee80211_ccmp_null(void) -{ - /* printk("============>%s()\n", __func__); */ - return; -} - static struct ieee80211_crypto_ops ieee80211_crypt_ccmp = { .name = "CCMP", .init = ieee80211_ccmp_init, |