X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fnet%2Fwireless%2Frt2x00%2Frt2x00queue.c;h=eaec6bd93ed5e0adc3f5a0911a8d9dac72356db1;hb=4e9b1c184cadbece3694603de5f880b6e35bd7a7;hp=e9f4261054bc905daf474357519cb0be5ea78361;hpb=7e452baf6b96b5aeba097afd91501d33d390cc97;p=linux-2.6-omap-h63xx.git diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c index e9f4261054b..eaec6bd93ed 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, /* * For IV/EIV/ICV assembly we must make sure there is * at least 8 bytes bytes available in headroom for IV/EIV - * and 4 bytes for ICV data as tailroon. + * and 8 bytes for ICV data as tailroon. */ -#ifdef CONFIG_RT2X00_LIB_CRYPTO if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) { head_size += 8; - tail_size += 4; + tail_size += 8; } -#endif /* CONFIG_RT2X00_LIB_CRYPTO */ /* * Allocate skbuffer. @@ -174,7 +172,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, txdesc->cw_max = entry->queue->cw_max; txdesc->aifs = entry->queue->aifs; - /* Data length + CRC + IV/EIV/ICV/MMIC (when using encryption) */ + /* Data length + CRC */ data_length = entry->skb->len + 4; /* @@ -183,34 +181,17 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) __set_bit(ENTRY_TXD_ACK, &txdesc->flags); -#ifdef CONFIG_RT2X00_LIB_CRYPTO if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags) && !entry->skb->do_not_encrypt) { - struct ieee80211_key_conf *hw_key = tx_info->control.hw_key; - - __set_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags); - - txdesc->cipher = rt2x00crypto_key_to_cipher(hw_key); - - if (hw_key->flags & IEEE80211_KEY_FLAG_PAIRWISE) - __set_bit(ENTRY_TXD_ENCRYPT_PAIRWISE, &txdesc->flags); - - txdesc->key_idx = hw_key->hw_key_idx; - txdesc->iv_offset = ieee80211_get_hdrlen_from_skb(entry->skb); + /* Apply crypto specific descriptor information */ + rt2x00crypto_create_tx_descriptor(entry, txdesc); /* * Extend frame length to include all encryption overhead * that will be added by the hardware. */ data_length += rt2x00crypto_tx_overhead(tx_info); - - if (!(hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV)) - __set_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc->flags); - - if (!(hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_MMIC)) - __set_bit(ENTRY_TXD_ENCRYPT_MMIC, &txdesc->flags); } -#endif /* CONFIG_RT2X00_LIB_CRYPTO */ /* * Check if this is a RTS/CTS frame @@ -231,14 +212,7 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, * Determine retry information. */ txdesc->retry_limit = tx_info->control.rates[0].count - 1; - /* - * XXX: If at this point we knew whether the HW is going to use - * the RETRY_MODE bit or the retry_limit (currently all - * use the RETRY_MODE bit) we could do something like b43 - * does, set the RETRY_MODE bit when the RC algorithm is - * requesting more than the long retry limit. - */ - if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) + if (txdesc->retry_limit >= rt2x00dev->long_retry) __set_bit(ENTRY_TXD_RETRY_MODE, &txdesc->flags); /* @@ -319,8 +293,8 @@ static void rt2x00queue_create_tx_descriptor(struct queue_entry *entry, /* * Convert length to microseconds. */ - residual = get_duration_res(data_length, hwrate->bitrate); - duration = get_duration(data_length, hwrate->bitrate); + residual = GET_DURATION_RES(data_length, hwrate->bitrate); + duration = GET_DURATION(data_length, hwrate->bitrate); if (residual != 0) { duration++; @@ -386,7 +360,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb) u8 rate_idx, rate_flags; if (unlikely(rt2x00queue_full(queue))) - return -EINVAL; + return -ENOBUFS; if (test_and_set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) { ERROR(queue->rt2x00dev, @@ -415,7 +389,7 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb) tx_info = IEEE80211_SKB_CB(skb); rate_idx = tx_info->control.rates[0].idx; rate_flags = tx_info->control.rates[0].flags; - skbdesc = get_skb_frame_desc(entry->skb); + skbdesc = get_skb_frame_desc(skb); memset(skbdesc, 0, sizeof(*skbdesc)); skbdesc->entry = entry; skbdesc->tx_rate_idx = rate_idx; @@ -428,19 +402,21 @@ int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb) */ if (test_bit(ENTRY_TXD_ENCRYPT, &txdesc.flags) && !test_bit(ENTRY_TXD_ENCRYPT_IV, &txdesc.flags)) { - rt2x00crypto_tx_remove_iv(skb, iv_len); + if (test_bit(CONFIG_CRYPTO_COPY_IV, &queue->rt2x00dev->flags)) + rt2x00crypto_tx_copy_iv(skb, iv_len); + else + rt2x00crypto_tx_remove_iv(skb, iv_len); } /* * It could be possible that the queue was corrupted and this - * call failed. Just drop the frame, we cannot rollback and pass - * the frame to mac80211 because the skb->cb has now been tainted. + * call failed. Since we always return NETDEV_TX_OK to mac80211, + * this frame will simply be dropped. */ if (unlikely(queue->rt2x00dev->ops->lib->write_tx_data(entry))) { clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags); - dev_kfree_skb_any(entry->skb); entry->skb = NULL; - return 0; + return -EIO; } if (test_bit(DRIVER_REQUIRE_DMA, &queue->rt2x00dev->flags)) @@ -589,40 +565,18 @@ static void rt2x00queue_reset(struct data_queue *queue) spin_unlock_irqrestore(&queue->lock, irqflags); } -void rt2x00queue_init_rx(struct rt2x00_dev *rt2x00dev) -{ - struct data_queue *queue = rt2x00dev->rx; - unsigned int i; - - rt2x00queue_reset(queue); - - if (!rt2x00dev->ops->lib->init_rxentry) - return; - - for (i = 0; i < queue->limit; i++) { - queue->entries[i].flags = 0; - - rt2x00dev->ops->lib->init_rxentry(rt2x00dev, - &queue->entries[i]); - } -} - -void rt2x00queue_init_tx(struct rt2x00_dev *rt2x00dev) +void rt2x00queue_init_queues(struct rt2x00_dev *rt2x00dev) { struct data_queue *queue; unsigned int i; - txall_queue_for_each(rt2x00dev, queue) { + queue_for_each(rt2x00dev, queue) { rt2x00queue_reset(queue); - if (!rt2x00dev->ops->lib->init_txentry) - continue; - for (i = 0; i < queue->limit; i++) { queue->entries[i].flags = 0; - rt2x00dev->ops->lib->init_txentry(rt2x00dev, - &queue->entries[i]); + rt2x00dev->ops->lib->clear_entry(&queue->entries[i]); } } }