Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * lib80211 crypt: host-based CCMP encryption implementation for lib80211
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2003-2004, Jouni Malinen <j@w1.fi>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Copyright (c) 2008, John W. Linville <linville@tuxdriver.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/if_arp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <asm/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/wireless.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/ieee80211.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/crypto.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <crypto/aead.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <net/lib80211.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) MODULE_AUTHOR("Jouni Malinen");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) MODULE_DESCRIPTION("Host AP crypt: CCMP");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define AES_BLOCK_LEN 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define CCMP_HDR_LEN 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define CCMP_MIC_LEN 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define CCMP_TK_LEN 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define CCMP_PN_LEN 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) struct lib80211_ccmp_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	u8 key[CCMP_TK_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	int key_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	u8 tx_pn[CCMP_PN_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	u8 rx_pn[CCMP_PN_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	u32 dot11RSNAStatsCCMPFormatErrors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	u32 dot11RSNAStatsCCMPReplays;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	u32 dot11RSNAStatsCCMPDecryptErrors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	int key_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	struct crypto_aead *tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	/* scratch buffers for virt_to_page() (crypto API) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	u8 tx_aad[2 * AES_BLOCK_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	u8 rx_aad[2 * AES_BLOCK_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) static void *lib80211_ccmp_init(int key_idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	struct lib80211_ccmp_data *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	if (priv == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	priv->key_idx = key_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	priv->tfm = crypto_alloc_aead("ccm(aes)", 0, CRYPTO_ALG_ASYNC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	if (IS_ERR(priv->tfm)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		priv->tfm = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	return priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76)       fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	if (priv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		if (priv->tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 			crypto_free_aead(priv->tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		kfree(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) static void lib80211_ccmp_deinit(void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	struct lib80211_ccmp_data *_priv = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	if (_priv && _priv->tfm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		crypto_free_aead(_priv->tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	kfree(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) static int ccmp_init_iv_and_aad(const struct ieee80211_hdr *hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 				const u8 *pn, u8 *iv, u8 *aad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	u8 *pos, qc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	size_t aad_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	int a4_included, qc_included;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	a4_included = ieee80211_has_a4(hdr->frame_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	qc_included = ieee80211_is_data_qos(hdr->frame_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	aad_len = 22;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (a4_included)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		aad_len += 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	if (qc_included) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		pos = (u8 *) & hdr->addr4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		if (a4_included)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 			pos += 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		qc = *pos & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		aad_len += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	/* In CCM, the initial vectors (IV) used for CTR mode encryption and CBC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	 * mode authentication are not allowed to collide, yet both are derived
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	 * from the same vector. We only set L := 1 here to indicate that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	 * data size can be represented in (L+1) bytes. The CCM layer will take
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	 * care of storing the data length in the top (L+1) bytes and setting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	 * and clearing the other bits as is required to derive the two IVs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	iv[0] = 0x1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	/* Nonce: QC | A2 | PN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	iv[1] = qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	memcpy(iv + 2, hdr->addr2, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	memcpy(iv + 8, pn, CCMP_PN_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	/* AAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	 * FC with bits 4..6 and 11..13 masked to zero; 14 is always one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	 * A1 | A2 | A3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	 * SC with bits 4..15 (seq#) masked to zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	 * A4 (if present)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	 * QC (if present)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	pos = (u8 *) hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	aad[0] = pos[0] & 0x8f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	aad[1] = pos[1] & 0xc7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	memcpy(aad + 2, hdr->addr1, 3 * ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	pos = (u8 *) & hdr->seq_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	aad[20] = pos[0] & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	aad[21] = 0;		/* all bits masked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	memset(aad + 22, 0, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	if (a4_included)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		memcpy(aad + 22, hdr->addr4, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	if (qc_included) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		aad[a4_included ? 28 : 22] = qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		/* rest of QC masked */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	return aad_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static int lib80211_ccmp_hdr(struct sk_buff *skb, int hdr_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 			      u8 *aeskey, int keylen, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	struct lib80211_ccmp_data *key = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	u8 *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (skb_headroom(skb) < CCMP_HDR_LEN || skb->len < hdr_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	if (aeskey != NULL && keylen >= CCMP_TK_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		memcpy(aeskey, key->key, CCMP_TK_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	pos = skb_push(skb, CCMP_HDR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	memmove(pos, pos + CCMP_HDR_LEN, hdr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	pos += hdr_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	i = CCMP_PN_LEN - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	while (i >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		key->tx_pn[i]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		if (key->tx_pn[i] != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		i--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	*pos++ = key->tx_pn[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	*pos++ = key->tx_pn[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	*pos++ = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	*pos++ = (key->key_idx << 6) | (1 << 5) /* Ext IV included */ ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	*pos++ = key->tx_pn[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	*pos++ = key->tx_pn[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	*pos++ = key->tx_pn[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	*pos++ = key->tx_pn[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	return CCMP_HDR_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static int lib80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	struct lib80211_ccmp_data *key = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	struct ieee80211_hdr *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	struct aead_request *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	struct scatterlist sg[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	u8 *aad = key->tx_aad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	u8 iv[AES_BLOCK_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	int len, data_len, aad_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	if (skb_tailroom(skb) < CCMP_MIC_LEN || skb->len < hdr_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	data_len = skb->len - hdr_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	len = lib80211_ccmp_hdr(skb, hdr_len, NULL, 0, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	if (len < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	req = aead_request_alloc(key->tfm, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	if (!req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	hdr = (struct ieee80211_hdr *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	aad_len = ccmp_init_iv_and_aad(hdr, key->tx_pn, iv, aad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	skb_put(skb, CCMP_MIC_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	sg_init_table(sg, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	sg_set_buf(&sg[0], aad, aad_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	sg_set_buf(&sg[1], skb->data + hdr_len + CCMP_HDR_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		   data_len + CCMP_MIC_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	aead_request_set_callback(req, 0, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	aead_request_set_ad(req, aad_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	aead_request_set_crypt(req, sg, sg, data_len, iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	ret = crypto_aead_encrypt(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	aead_request_free(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)  * deal with seq counter wrapping correctly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)  * refer to timer_after() for jiffies wrapping handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) static inline int ccmp_replay_check(u8 *pn_n, u8 *pn_o)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	u32 iv32_n, iv16_n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	u32 iv32_o, iv16_o;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	iv32_n = (pn_n[0] << 24) | (pn_n[1] << 16) | (pn_n[2] << 8) | pn_n[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	iv16_n = (pn_n[4] << 8) | pn_n[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	iv32_o = (pn_o[0] << 24) | (pn_o[1] << 16) | (pn_o[2] << 8) | pn_o[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	iv16_o = (pn_o[4] << 8) | pn_o[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	if ((s32)iv32_n - (s32)iv32_o < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	    (iv32_n == iv32_o && iv16_n <= iv16_o))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static int lib80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	struct lib80211_ccmp_data *key = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	u8 keyidx, *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	struct ieee80211_hdr *hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	struct aead_request *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	struct scatterlist sg[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	u8 *aad = key->rx_aad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	u8 iv[AES_BLOCK_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	u8 pn[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	int aad_len, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	size_t data_len = skb->len - hdr_len - CCMP_HDR_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	if (skb->len < hdr_len + CCMP_HDR_LEN + CCMP_MIC_LEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		key->dot11RSNAStatsCCMPFormatErrors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	hdr = (struct ieee80211_hdr *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	pos = skb->data + hdr_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	keyidx = pos[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	if (!(keyidx & (1 << 5))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		net_dbg_ratelimited("CCMP: received packet without ExtIV flag from %pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 				    hdr->addr2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		key->dot11RSNAStatsCCMPFormatErrors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		return -2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	keyidx >>= 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	if (key->key_idx != keyidx) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		net_dbg_ratelimited("CCMP: RX tkey->key_idx=%d frame keyidx=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 				    key->key_idx, keyidx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		return -6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	if (!key->key_set) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 		net_dbg_ratelimited("CCMP: received packet from %pM with keyid=%d that does not have a configured key\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 				    hdr->addr2, keyidx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		return -3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	pn[0] = pos[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	pn[1] = pos[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	pn[2] = pos[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	pn[3] = pos[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	pn[4] = pos[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	pn[5] = pos[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	pos += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	if (ccmp_replay_check(pn, key->rx_pn)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) #ifdef CONFIG_LIB80211_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		net_dbg_ratelimited("CCMP: replay detected: STA=%pM previous PN %02x%02x%02x%02x%02x%02x received PN %02x%02x%02x%02x%02x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 				    hdr->addr2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 				    key->rx_pn[0], key->rx_pn[1], key->rx_pn[2],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 				    key->rx_pn[3], key->rx_pn[4], key->rx_pn[5],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 				    pn[0], pn[1], pn[2], pn[3], pn[4], pn[5]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		key->dot11RSNAStatsCCMPReplays++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		return -4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	req = aead_request_alloc(key->tfm, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	if (!req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	aad_len = ccmp_init_iv_and_aad(hdr, pn, iv, aad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	sg_init_table(sg, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	sg_set_buf(&sg[0], aad, aad_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	sg_set_buf(&sg[1], pos, data_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	aead_request_set_callback(req, 0, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	aead_request_set_ad(req, aad_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	aead_request_set_crypt(req, sg, sg, data_len, iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	ret = crypto_aead_decrypt(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	aead_request_free(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		net_dbg_ratelimited("CCMP: decrypt failed: STA=%pM (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 				    hdr->addr2, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		key->dot11RSNAStatsCCMPDecryptErrors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		return -5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	memcpy(key->rx_pn, pn, CCMP_PN_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	/* Remove hdr and MIC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	memmove(skb->data + CCMP_HDR_LEN, skb->data, hdr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	skb_pull(skb, CCMP_HDR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	skb_trim(skb, skb->len - CCMP_MIC_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	return keyidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static int lib80211_ccmp_set_key(void *key, int len, u8 * seq, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	struct lib80211_ccmp_data *data = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	int keyidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	struct crypto_aead *tfm = data->tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	keyidx = data->key_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	memset(data, 0, sizeof(*data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	data->key_idx = keyidx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	data->tfm = tfm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	if (len == CCMP_TK_LEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 		memcpy(data->key, key, CCMP_TK_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 		data->key_set = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		if (seq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 			data->rx_pn[0] = seq[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 			data->rx_pn[1] = seq[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 			data->rx_pn[2] = seq[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 			data->rx_pn[3] = seq[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 			data->rx_pn[4] = seq[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 			data->rx_pn[5] = seq[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 		if (crypto_aead_setauthsize(data->tfm, CCMP_MIC_LEN) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		    crypto_aead_setkey(data->tfm, data->key, CCMP_TK_LEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 			return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	} else if (len == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		data->key_set = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static int lib80211_ccmp_get_key(void *key, int len, u8 * seq, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	struct lib80211_ccmp_data *data = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	if (len < CCMP_TK_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	if (!data->key_set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	memcpy(key, data->key, CCMP_TK_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	if (seq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 		seq[0] = data->tx_pn[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 		seq[1] = data->tx_pn[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 		seq[2] = data->tx_pn[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 		seq[3] = data->tx_pn[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 		seq[4] = data->tx_pn[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 		seq[5] = data->tx_pn[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	return CCMP_TK_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) static void lib80211_ccmp_print_stats(struct seq_file *m, void *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	struct lib80211_ccmp_data *ccmp = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	seq_printf(m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		   "key[%d] alg=CCMP key_set=%d "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 		   "tx_pn=%02x%02x%02x%02x%02x%02x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 		   "rx_pn=%02x%02x%02x%02x%02x%02x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 		   "format_errors=%d replays=%d decrypt_errors=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		   ccmp->key_idx, ccmp->key_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 		   ccmp->tx_pn[0], ccmp->tx_pn[1], ccmp->tx_pn[2],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 		   ccmp->tx_pn[3], ccmp->tx_pn[4], ccmp->tx_pn[5],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 		   ccmp->rx_pn[0], ccmp->rx_pn[1], ccmp->rx_pn[2],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 		   ccmp->rx_pn[3], ccmp->rx_pn[4], ccmp->rx_pn[5],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 		   ccmp->dot11RSNAStatsCCMPFormatErrors,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 		   ccmp->dot11RSNAStatsCCMPReplays,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 		   ccmp->dot11RSNAStatsCCMPDecryptErrors);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static struct lib80211_crypto_ops lib80211_crypt_ccmp = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	.name = "CCMP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	.init = lib80211_ccmp_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	.deinit = lib80211_ccmp_deinit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	.encrypt_mpdu = lib80211_ccmp_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	.decrypt_mpdu = lib80211_ccmp_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	.encrypt_msdu = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 	.decrypt_msdu = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 	.set_key = lib80211_ccmp_set_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	.get_key = lib80211_ccmp_get_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 	.print_stats = lib80211_ccmp_print_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	.extra_mpdu_prefix_len = CCMP_HDR_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	.extra_mpdu_postfix_len = CCMP_MIC_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 	.owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static int __init lib80211_crypto_ccmp_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 	return lib80211_register_crypto_ops(&lib80211_crypt_ccmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) static void __exit lib80211_crypto_ccmp_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 	lib80211_unregister_crypto_ops(&lib80211_crypt_ccmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) module_init(lib80211_crypto_ccmp_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) module_exit(lib80211_crypto_ccmp_exit);