gitops/mt76
1
0
Fork 0
mirror of https://github.com/outbackdingo/mt76.git synced 2026-10-24 13:26:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

mt7603: generate crypto PN/IV in software

Browse Source 
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2016-02-27 21:04:16 +01:00
parent a20d8360d6
commit bec2ab5d8d
1 changed files with 13 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mt7603_mac.c
+13 -21
View File
@@ -551,34 +551,19 @@ int mt7603_wtbl_set_key(struct mt7603_dev *dev, int wcid,
enum mt7603_cipher_type cipher;
u32 addr = mt7603_wtbl3_addr(wcid);
u8 key_data[32];
u8 iv_data[8];
int key_len = sizeof(key_data);
cipher = mt7603_mac_get_key_info(key, key_data);
if (cipher == MT_CIPHER_NONE && key)
return -EINVAL;
memset(iv_data, 0, sizeof(iv_data));
if (key) {
if (cipher == MT_CIPHER_WEP40 || cipher == MT_CIPHER_WEP104) {
addr += key->keyidx * 16;
key_len = 16;
}
iv_data[3] = key->keyidx << 6;
if (cipher >= MT_CIPHER_TKIP)
iv_data[3] |= 0x20;
if (key && (cipher == MT_CIPHER_WEP40 || cipher == MT_CIPHER_WEP104)) {
addr += key->keyidx * 16;
key_len = 16;
}
mt76_wr_copy(dev, addr, key_data, key_len);
addr = mt7603_wtbl2_addr(wcid);
if (cipher != MT_CIPHER_WEP40 && cipher != MT_CIPHER_WEP104) {
mt76_wr(dev, addr, get_unaligned_le32(&iv_data[0]));
mt76_rmw_field(dev, addr + 4, MT_WTBL2_W1_PN_HI,
get_unaligned_le16(&iv_data[4]));
}
addr = mt7603_wtbl1_addr(wcid);
mt76_rmw_field(dev, addr + 2 * 4, MT_WTBL1_W2_KEY_TYPE, cipher);
if (key)
@@ -592,7 +577,7 @@ static int
mt7603_mac_write_txwi(struct mt7603_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_queue *q,
struct mt76_wcid *wcid, struct ieee80211_sta *sta,
int pid, bool key)
int pid, struct ieee80211_key_conf *key)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rate = &info->control.rates[0];
@@ -630,7 +615,7 @@ mt7603_mac_write_txwi(struct mt7603_dev *dev, __le32 *txwi,
MT76_SET(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) |
MT76_SET(MT_TXD1_HDR_INFO, hdr_len / 2) |
MT76_SET(MT_TXD1_WLAN_IDX, wlan_idx) |
MT76_SET(MT_TXD1_PROTECTED, key)
MT76_SET(MT_TXD1_PROTECTED, !!key)
);
if (info->flags & IEEE80211_TX_CTL_NO_ACK) {
@@ -680,6 +665,13 @@ mt7603_mac_write_txwi(struct mt7603_dev *dev, __le32 *txwi,
MT76_SET(MT_TXD3_SEQ, le16_to_cpu(hdr->seq_ctrl))
);
if (key) {
u64 pn = atomic64_inc_return(&key->tx_pn);
txwi[3] |= cpu_to_le32(MT_TXD3_PN_VALID);
txwi[4] = pn & GENMASK(31, 0);
txwi[5] |= MT76_SET(MT_TXD5_PN_HIGH, pn >> 32);
}
if (info->flags & IEEE80211_TX_CTL_LDPC)
txwi[6] |= cpu_to_le32(MT_TXD6_LDPC);
@@ -697,7 +689,7 @@ int mt7603_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct mt7603_sta *msta = container_of(wcid, struct mt7603_sta, wcid);
struct mt7603_cb *cb = mt7603_skb_cb(skb);
bool key = info->control.hw_key;
struct ieee80211_key_conf *key = info->control.hw_key;
int pid = 0;
if (!wcid)