--- /dev/null
+/*
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/compiler.h>
+#include <net/mac80211.h>
+
+#include "ieee80211_i.h"
+#include "michael.h"
+#include "tkip.h"
+#include "aes_ccm.h"
+#include "wpa.h"
+
+static int ieee80211_get_hdr_info(const struct sk_buff *skb, u8 **sa, u8 **da,
+ u8 *qos_tid, u8 **data, size_t *data_len)
+{
+ struct ieee80211_hdr *hdr;
+ size_t hdrlen;
+ u16 fc;
+ int a4_included;
+ u8 *pos;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = le16_to_cpu(hdr->frame_control);
+
+ hdrlen = 24;
+ if ((fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) ==
+ (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
+ hdrlen += ETH_ALEN;
+ *sa = hdr->addr4;
+ *da = hdr->addr3;
+ } else if (fc & IEEE80211_FCTL_FROMDS) {
+ *sa = hdr->addr3;
+ *da = hdr->addr1;
+ } else if (fc & IEEE80211_FCTL_TODS) {
+ *sa = hdr->addr2;
+ *da = hdr->addr3;
+ } else {
+ *sa = hdr->addr2;
+ *da = hdr->addr1;
+ }
+
+ if (fc & 0x80)
+ hdrlen += 2;
+
+ *data = skb->data + hdrlen;
+ *data_len = skb->len - hdrlen;
+
+ a4_included = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+ (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
+ if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+ fc & IEEE80211_STYPE_QOS_DATA) {
+ pos = (u8 *) &hdr->addr4;
+ if (a4_included)
+ pos += 6;
+ *qos_tid = pos[0] & 0x0f;
+ *qos_tid |= 0x80; /* qos_included flag */
+ } else
+ *qos_tid = 0;
+
+ return skb->len < hdrlen ? -1 : 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_tx_h_michael_mic_add(struct ieee80211_txrx_data *tx)
+{
+ u8 *data, *sa, *da, *key, *mic, qos_tid;
+ size_t data_len;
+ u16 fc;
+ struct sk_buff *skb = tx->skb;
+ int authenticator;
+ int wpa_test = 0;
+
+ fc = tx->fc;
+
+ if (!tx->key || tx->key->conf.alg != ALG_TKIP || skb->len < 24 ||
+ !WLAN_FC_DATA_PRESENT(fc))
+ return TXRX_CONTINUE;
+
+ if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len))
+ return TXRX_DROP;
+
+ if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
+ !(tx->flags & IEEE80211_TXRXD_FRAGMENTED) &&
+ !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC) &&
+ !wpa_test) {
+ /* hwaccel - with no need for preallocated room for Michael MIC
+ */
+ return TXRX_CONTINUE;
+ }
+
+ if (skb_tailroom(skb) < MICHAEL_MIC_LEN) {
+ I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+ if (unlikely(pskb_expand_head(skb, TKIP_IV_LEN,
+ MICHAEL_MIC_LEN + TKIP_ICV_LEN,
+ GFP_ATOMIC))) {
+ printk(KERN_DEBUG "%s: failed to allocate more memory "
+ "for Michael MIC\n", tx->dev->name);
+ return TXRX_DROP;
+ }
+ }
+
+#if 0
+ authenticator = fc & IEEE80211_FCTL_FROMDS; /* FIX */
+#else
+ authenticator = 1;
+#endif
+ key = &tx->key->conf.key[authenticator ? ALG_TKIP_TEMP_AUTH_TX_MIC_KEY :
+ ALG_TKIP_TEMP_AUTH_RX_MIC_KEY];
+ mic = skb_put(skb, MICHAEL_MIC_LEN);
+ michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
+
+ return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_rx_h_michael_mic_verify(struct ieee80211_txrx_data *rx)
+{
+ u8 *data, *sa, *da, *key = NULL, qos_tid;
+ size_t data_len;
+ u16 fc;
+ u8 mic[MICHAEL_MIC_LEN];
+ struct sk_buff *skb = rx->skb;
+ int authenticator = 1, wpa_test = 0;
+
+ fc = rx->fc;
+
+ /*
+ * No way to verify the MIC if the hardware stripped it
+ */
+ if (rx->u.rx.status->flag & RX_FLAG_MMIC_STRIPPED)
+ return TXRX_CONTINUE;
+
+ if (!rx->key || rx->key->conf.alg != ALG_TKIP ||
+ !(rx->fc & IEEE80211_FCTL_PROTECTED) || !WLAN_FC_DATA_PRESENT(fc))
+ return TXRX_CONTINUE;
+
+ if (ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len)
+ || data_len < MICHAEL_MIC_LEN)
+ return TXRX_DROP;
+
+ data_len -= MICHAEL_MIC_LEN;
+
+#if 0
+ authenticator = fc & IEEE80211_FCTL_TODS; /* FIX */
+#else
+ authenticator = 1;
+#endif
+ key = &rx->key->conf.key[authenticator ? ALG_TKIP_TEMP_AUTH_RX_MIC_KEY :
+ ALG_TKIP_TEMP_AUTH_TX_MIC_KEY];
+ michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
+ if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0 || wpa_test) {
+ if (!(rx->flags & IEEE80211_TXRXD_RXRA_MATCH))
+ return TXRX_DROP;
+
+ printk(KERN_DEBUG "%s: invalid Michael MIC in data frame from "
+ MAC_FMT "\n", rx->dev->name, MAC_ARG(sa));
+
+ mac80211_ev_michael_mic_failure(rx->dev, rx->key->conf.keyidx,
+ (void *) skb->data);
+ return TXRX_DROP;
+ }
+
+ /* remove Michael MIC from payload */
+ skb_trim(skb, skb->len - MICHAEL_MIC_LEN);
+
+ /* update IV in key information to be able to detect replays */
+ rx->key->u.tkip.iv32_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv32;
+ rx->key->u.tkip.iv16_rx[rx->u.rx.queue] = rx->u.rx.tkip_iv16;
+
+ return TXRX_CONTINUE;
+}
+
+
+static int tkip_encrypt_skb(struct ieee80211_txrx_data *tx,
+ struct sk_buff *skb, int test)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_key *key = tx->key;
+ int hdrlen, len, tailneed;
+ u16 fc;
+ u8 *pos;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+ len = skb->len - hdrlen;
+
+ if (tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
+ tailneed = 0;
+ else
+ tailneed = TKIP_ICV_LEN;
+
+ if ((skb_headroom(skb) < TKIP_IV_LEN ||
+ skb_tailroom(skb) < tailneed)) {
+ I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+ if (unlikely(pskb_expand_head(skb, TKIP_IV_LEN, tailneed,
+ GFP_ATOMIC)))
+ return -1;
+ }
+
+ pos = skb_push(skb, TKIP_IV_LEN);
+ memmove(pos, pos + TKIP_IV_LEN, hdrlen);
+ pos += hdrlen;
+
+ /* Increase IV for the frame */
+ key->u.tkip.iv16++;
+ if (key->u.tkip.iv16 == 0)
+ key->u.tkip.iv32++;
+
+ if (tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) {
+ hdr = (struct ieee80211_hdr *)skb->data;
+
+ /* hwaccel - with preallocated room for IV */
+ ieee80211_tkip_add_iv(pos, key,
+ (u8) (key->u.tkip.iv16 >> 8),
+ (u8) (((key->u.tkip.iv16 >> 8) | 0x20) &
+ 0x7f),
+ (u8) key->u.tkip.iv16);
+
+ tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
+ return 0;
+ }
+
+ /* Add room for ICV */
+ skb_put(skb, TKIP_ICV_LEN);
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ ieee80211_tkip_encrypt_data(tx->local->wep_tx_tfm,
+ key, pos, len, hdr->addr2);
+ return 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_crypto_tkip_encrypt(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ u16 fc;
+ struct sk_buff *skb = tx->skb;
+ int wpa_test = 0, test = 0;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+ if (!WLAN_FC_DATA_PRESENT(fc))
+ return TXRX_CONTINUE;
+
+ tx->u.tx.control->icv_len = TKIP_ICV_LEN;
+ tx->u.tx.control->iv_len = TKIP_IV_LEN;
+ ieee80211_tx_set_iswep(tx);
+
+ if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
+ !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
+ !wpa_test) {
+ /* hwaccel - with no need for preallocated room for IV/ICV */
+ tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
+ return TXRX_CONTINUE;
+ }
+
+ if (tkip_encrypt_skb(tx, skb, test) < 0)
+ return TXRX_DROP;
+
+ if (tx->u.tx.extra_frag) {
+ int i;
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ if (tkip_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
+ < 0)
+ return TXRX_DROP;
+ }
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_crypto_tkip_decrypt(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+ u16 fc;
+ int hdrlen, res, hwaccel = 0, wpa_test = 0;
+ struct ieee80211_key *key = rx->key;
+ struct sk_buff *skb = rx->skb;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+ return TXRX_CONTINUE;
+
+ if (!rx->sta || skb->len - hdrlen < 12)
+ return TXRX_DROP;
+
+ if (rx->u.rx.status->flag & RX_FLAG_DECRYPTED) {
+ if (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED) {
+ /*
+ * Hardware took care of all processing, including
+ * replay protection, and stripped the ICV/IV so
+ * we cannot do any checks here.
+ */
+ return TXRX_CONTINUE;
+ }
+
+ /* let TKIP code verify IV, but skip decryption */
+ hwaccel = 1;
+ }
+
+ res = ieee80211_tkip_decrypt_data(rx->local->wep_rx_tfm,
+ key, skb->data + hdrlen,
+ skb->len - hdrlen, rx->sta->addr,
+ hwaccel, rx->u.rx.queue,
+ &rx->u.rx.tkip_iv32,
+ &rx->u.rx.tkip_iv16);
+ if (res != TKIP_DECRYPT_OK || wpa_test) {
+ printk(KERN_DEBUG "%s: TKIP decrypt failed for RX frame from "
+ MAC_FMT " (res=%d)\n",
+ rx->dev->name, MAC_ARG(rx->sta->addr), res);
+ return TXRX_DROP;
+ }
+
+ /* Trim ICV */
+ skb_trim(skb, skb->len - TKIP_ICV_LEN);
+
+ /* Remove IV */
+ memmove(skb->data + TKIP_IV_LEN, skb->data, hdrlen);
+ skb_pull(skb, TKIP_IV_LEN);
+
+ return TXRX_CONTINUE;
+}
+
+
+static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *b_0, u8 *aad,
+ int encrypted)
+{
+ u16 fc;
+ int a4_included, qos_included;
+ u8 qos_tid, *fc_pos, *data, *sa, *da;
+ int len_a;
+ size_t data_len;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+
+ fc_pos = (u8 *) &hdr->frame_control;
+ fc = fc_pos[0] ^ (fc_pos[1] << 8);
+ a4_included = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+ (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
+
+ ieee80211_get_hdr_info(skb, &sa, &da, &qos_tid, &data, &data_len);
+ data_len -= CCMP_HDR_LEN + (encrypted ? CCMP_MIC_LEN : 0);
+ if (qos_tid & 0x80) {
+ qos_included = 1;
+ qos_tid &= 0x0f;
+ } else
+ qos_included = 0;
+ /* First block, b_0 */
+
+ b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
+ /* Nonce: QoS Priority | A2 | PN */
+ b_0[1] = qos_tid;
+ memcpy(&b_0[2], hdr->addr2, 6);
+ memcpy(&b_0[8], pn, CCMP_PN_LEN);
+ /* l(m) */
+ b_0[14] = (data_len >> 8) & 0xff;
+ b_0[15] = data_len & 0xff;
+
+
+ /* AAD (extra authenticate-only data) / masked 802.11 header
+ * FC | A1 | A2 | A3 | SC | [A4] | [QC] */
+
+ len_a = a4_included ? 28 : 22;
+ if (qos_included)
+ len_a += 2;
+
+ aad[0] = 0; /* (len_a >> 8) & 0xff; */
+ aad[1] = len_a & 0xff;
+ /* Mask FC: zero subtype b4 b5 b6 */
+ aad[2] = fc_pos[0] & ~(BIT(4) | BIT(5) | BIT(6));
+ /* Retry, PwrMgt, MoreData; set Protected */
+ aad[3] = (fc_pos[1] & ~(BIT(3) | BIT(4) | BIT(5))) | BIT(6);
+ memcpy(&aad[4], &hdr->addr1, 18);
+
+ /* Mask Seq#, leave Frag# */
+ aad[22] = *((u8 *) &hdr->seq_ctrl) & 0x0f;
+ aad[23] = 0;
+ if (a4_included) {
+ memcpy(&aad[24], hdr->addr4, 6);
+ aad[30] = 0;
+ aad[31] = 0;
+ } else
+ memset(&aad[24], 0, 8);
+ if (qos_included) {
+ u8 *dpos = &aad[a4_included ? 30 : 24];
+
+ /* Mask QoS Control field */
+ dpos[0] = qos_tid;
+ dpos[1] = 0;
+ }
+}
+
+
+static inline void ccmp_pn2hdr(u8 *hdr, u8 *pn, int key_id)
+{
+ hdr[0] = pn[5];
+ hdr[1] = pn[4];
+ hdr[2] = 0;
+ hdr[3] = 0x20 | (key_id << 6);
+ hdr[4] = pn[3];
+ hdr[5] = pn[2];
+ hdr[6] = pn[1];
+ hdr[7] = pn[0];
+}
+
+
+static inline int ccmp_hdr2pn(u8 *pn, u8 *hdr)
+{
+ pn[0] = hdr[7];
+ pn[1] = hdr[6];
+ pn[2] = hdr[5];
+ pn[3] = hdr[4];
+ pn[4] = hdr[1];
+ pn[5] = hdr[0];
+ return (hdr[3] >> 6) & 0x03;
+}
+
+
+static int ccmp_encrypt_skb(struct ieee80211_txrx_data *tx,
+ struct sk_buff *skb, int test)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_key *key = tx->key;
+ int hdrlen, len, tailneed;
+ u16 fc;
+ u8 *pos, *pn, *b_0, *aad, *scratch;
+ int i;
+
+ scratch = key->u.ccmp.tx_crypto_buf;
+ b_0 = scratch + 3 * AES_BLOCK_LEN;
+ aad = scratch + 4 * AES_BLOCK_LEN;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+ len = skb->len - hdrlen;
+
+ if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
+ tailneed = 0;
+ else
+ tailneed = CCMP_MIC_LEN;
+
+ if ((skb_headroom(skb) < CCMP_HDR_LEN ||
+ skb_tailroom(skb) < tailneed)) {
+ I802_DEBUG_INC(tx->local->tx_expand_skb_head);
+ if (unlikely(pskb_expand_head(skb, CCMP_HDR_LEN, tailneed,
+ GFP_ATOMIC)))
+ return -1;
+ }
+
+ pos = skb_push(skb, CCMP_HDR_LEN);
+ memmove(pos, pos + CCMP_HDR_LEN, hdrlen);
+ hdr = (struct ieee80211_hdr *) pos;
+ pos += hdrlen;
+
+ /* PN = PN + 1 */
+ pn = key->u.ccmp.tx_pn;
+
+ for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
+ pn[i]++;
+ if (pn[i])
+ break;
+ }
+
+ ccmp_pn2hdr(pos, pn, key->conf.keyidx);
+
+ if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) {
+ /* hwaccel - with preallocated room for CCMP header */
+ tx->u.tx.control->key_idx = key->conf.hw_key_idx;
+ return 0;
+ }
+
+ pos += CCMP_HDR_LEN;
+ ccmp_special_blocks(skb, pn, b_0, aad, 0);
+ ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, scratch, b_0, aad, pos, len,
+ pos, skb_put(skb, CCMP_MIC_LEN));
+
+ return 0;
+}
+
+
+ieee80211_txrx_result
+ieee80211_crypto_ccmp_encrypt(struct ieee80211_txrx_data *tx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+ u16 fc;
+ struct sk_buff *skb = tx->skb;
+ int test = 0;
+
+ fc = le16_to_cpu(hdr->frame_control);
+
+ if (!WLAN_FC_DATA_PRESENT(fc))
+ return TXRX_CONTINUE;
+
+ tx->u.tx.control->icv_len = CCMP_MIC_LEN;
+ tx->u.tx.control->iv_len = CCMP_HDR_LEN;
+ ieee80211_tx_set_iswep(tx);
+
+ if ((tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) &&
+ !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
+ /* hwaccel - with no need for preallocated room for CCMP "
+ * header or MIC fields */
+ tx->u.tx.control->key_idx = tx->key->conf.hw_key_idx;
+ return TXRX_CONTINUE;
+ }
+
+ if (ccmp_encrypt_skb(tx, skb, test) < 0)
+ return TXRX_DROP;
+
+ if (tx->u.tx.extra_frag) {
+ int i;
+ for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+ if (ccmp_encrypt_skb(tx, tx->u.tx.extra_frag[i], test)
+ < 0)
+ return TXRX_DROP;
+ }
+ }
+
+ return TXRX_CONTINUE;
+}
+
+
+ieee80211_txrx_result
+ieee80211_crypto_ccmp_decrypt(struct ieee80211_txrx_data *rx)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+ u16 fc;
+ int hdrlen;
+ struct ieee80211_key *key = rx->key;
+ struct sk_buff *skb = rx->skb;
+ u8 pn[CCMP_PN_LEN];
+ int data_len;
+
+ fc = le16_to_cpu(hdr->frame_control);
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+ if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+ return TXRX_CONTINUE;
+
+ data_len = skb->len - hdrlen - CCMP_HDR_LEN - CCMP_MIC_LEN;
+ if (!rx->sta || data_len < 0)
+ return TXRX_DROP;
+
+ if ((rx->u.rx.status->flag & RX_FLAG_DECRYPTED) &&
+ (rx->u.rx.status->flag & RX_FLAG_IV_STRIPPED))
+ return TXRX_CONTINUE;
+
+ (void) ccmp_hdr2pn(pn, skb->data + hdrlen);
+
+ if (memcmp(pn, key->u.ccmp.rx_pn[rx->u.rx.queue], CCMP_PN_LEN) <= 0) {
+#ifdef CONFIG_MAC80211_DEBUG
+ u8 *ppn = key->u.ccmp.rx_pn[rx->u.rx.queue];
+ printk(KERN_DEBUG "%s: CCMP replay detected for RX frame from "
+ MAC_FMT " (RX PN %02x%02x%02x%02x%02x%02x <= prev. PN "
+ "%02x%02x%02x%02x%02x%02x)\n", rx->dev->name,
+ MAC_ARG(rx->sta->addr),
+ pn[0], pn[1], pn[2], pn[3], pn[4], pn[5],
+ ppn[0], ppn[1], ppn[2], ppn[3], ppn[4], ppn[5]);
+#endif /* CONFIG_MAC80211_DEBUG */
+ key->u.ccmp.replays++;
+ return TXRX_DROP;
+ }
+
+ if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED)) {
+ /* hardware didn't decrypt/verify MIC */
+ u8 *scratch, *b_0, *aad;
+
+ scratch = key->u.ccmp.rx_crypto_buf;
+ b_0 = scratch + 3 * AES_BLOCK_LEN;
+ aad = scratch + 4 * AES_BLOCK_LEN;
+
+ ccmp_special_blocks(skb, pn, b_0, aad, 1);
+
+ if (ieee80211_aes_ccm_decrypt(
+ key->u.ccmp.tfm, scratch, b_0, aad,
+ skb->data + hdrlen + CCMP_HDR_LEN, data_len,
+ skb->data + skb->len - CCMP_MIC_LEN,
+ skb->data + hdrlen + CCMP_HDR_LEN)) {
+ printk(KERN_DEBUG "%s: CCMP decrypt failed for RX "
+ "frame from " MAC_FMT "\n", rx->dev->name,
+ MAC_ARG(rx->sta->addr));
+ return TXRX_DROP;
+ }
+ }
+
+ memcpy(key->u.ccmp.rx_pn[rx->u.rx.queue], pn, CCMP_PN_LEN);
+
+ /* Remove CCMP header and MIC */
+ skb_trim(skb, skb->len - CCMP_MIC_LEN);
+ memmove(skb->data + CCMP_HDR_LEN, skb->data, hdrlen);
+ skb_pull(skb, CCMP_HDR_LEN);
+
+ return TXRX_CONTINUE;
+}
+
projects / openwrt.git / blobdiff