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path: root/drivers/net/wireless/rt2x00/rt2x00queue.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00queue.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00queue.c46
1 files changed, 12 insertions, 34 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index b8de9d2750e4..eaec6bd93ed5 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -55,14 +55,12 @@ struct sk_buff *rt2x00queue_alloc_rxskb(struct rt2x00_dev *rt2x00dev,
55 /* 55 /*
56 * For IV/EIV/ICV assembly we must make sure there is 56 * For IV/EIV/ICV assembly we must make sure there is
57 * at least 8 bytes bytes available in headroom for IV/EIV 57 * at least 8 bytes bytes available in headroom for IV/EIV
58 * and 4 bytes for ICV data as tailroon. 58 * and 8 bytes for ICV data as tailroon.
59 */ 59 */
60#ifdef CONFIG_RT2X00_LIB_CRYPTO
61 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) { 60 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) {
62 head_size += 8; 61 head_size += 8;
63 tail_size += 4; 62 tail_size += 8;
64 } 63 }
65#endif /* CONFIG_RT2X00_LIB_CRYPTO */
66 64
67 /* 65 /*
68 * Allocate skbuffer. 66 * Allocate skbuffer.
@@ -174,7 +172,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
174 txdesc->cw_max = entry->queue->cw_max; 172 txdesc->cw_max = entry->queue->cw_max;
175 txdesc->aifs = entry->queue->aifs; 173 txdesc->aifs = entry->queue->aifs;
176 174
177 /* Data length + CRC + IV/EIV/ICV/MMIC (when using encryption) */ 175 /* Data length + CRC */
178 data_length = entry->skb->len + 4; 176 data_length = entry->skb->len + 4;
179 177
180 /* 178 /*
@@ -183,34 +181,17 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
183 if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) 181 if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK))
184 __set_bit(ENTRY_TXD_ACK, &txdesc->flags); 182 __set_bit(ENTRY_TXD_ACK, &txdesc->flags);
185 183
186#ifdef CONFIG_RT2X00_LIB_CRYPTO
187 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags) && 184 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags) &&
188 !entry->skb->do_not_encrypt) { 185 !entry->skb->do_not_encrypt) {
189 struct ieee80211_key_conf *hw_key = tx_info->control.hw_key; 186 /* Apply crypto specific descriptor information */
190 187 rt2x00crypto_create_tx_descriptor(entry, txdesc);
191 __set_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags);
192
193 txdesc->cipher = rt2x00crypto_key_to_cipher(hw_key);
194
195 if (hw_key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
196 __set_bit(ENTRY_TXD_ENCRYPT_PAIRWISE, &txdesc->flags);
197
198 txdesc->key_idx = hw_key->hw_key_idx;
199 txdesc->iv_offset = ieee80211_get_hdrlen_from_skb(entry->skb);
200 188
201 /* 189 /*
202 * Extend frame length to include all encryption overhead 190 * Extend frame length to include all encryption overhead
203 * that will be added by the hardware. 191 * that will be added by the hardware.
204 */ 192 */
205 data_length += rt2x00crypto_tx_overhead(tx_info); 193 data_length += rt2x00crypto_tx_overhead(tx_info);
206
207 if (!(hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV))
208 __set_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags);
209
210 if (!(hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_MMIC))
211 __set_bit(ENTRY_TXD_ENCRYPT_MMIC, &txdesc->flags);
212 } 194 }
213#endif /* CONFIG_RT2X00_LIB_CRYPTO */
214 195
215 /* 196 /*
216 * Check if this is a RTS/CTS frame 197 * Check if this is a RTS/CTS frame
@@ -231,14 +212,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry,
231 * Determine retry information. 212 * Determine retry information.
232 */ 213 */
233 txdesc->retry_limit = tx_info->control.rates[0].count - 1; 214 txdesc->retry_limit = tx_info->control.rates[0].count - 1;
234 /* 215 if (txdesc->retry_limit >= rt2x00dev->long_retry)
235 * XXX: If at this point we knew whether the HW is going to use
236 * the RETRY_MODE bit or the retry_limit (currently all
237 * use the RETRY_MODE bit) we could do something like b43
238 * does, set the RETRY_MODE bit when the RC algorithm is
239 * requesting more than the long retry limit.
240 */
241 if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
242 __set_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags); 216 __set_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags);
243 217
244 /* 218 /*
@@ -427,8 +401,12 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb)
427 * the frame so we can provide it to the driver seperately. 401 * the frame so we can provide it to the driver seperately.
428 */ 402 */
429 if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc.flags) && 403 if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc.flags) &&
430 !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags)) 404 !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags)) {
431 rt2x00crypto_tx_remove_iv(skb, iv_len); 405 if (test_bit(CONFIG_CRYPTO_COPY_IV, &queue->rt2x00dev->flags))
406 rt2x00crypto_tx_copy_iv(skb, iv_len);
407 else
408 rt2x00crypto_tx_remove_iv(skb, iv_len);
409 }
432 410
433 /* 411 /*
434 * It could be possible that the queue was corrupted and this 412 * It could be possible that the queue was corrupted and this