diff options
Diffstat (limited to 'drivers/net/wireless/b43/xmit.c')
| -rw-r--r-- | drivers/net/wireless/b43/xmit.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c index 3fc53e8b441..7de2814d527 100644 --- a/drivers/net/wireless/b43/xmit.c +++ b/drivers/net/wireless/b43/xmit.c @@ -237,20 +237,23 @@ void b43_generate_txhdr(struct b43_wldev *dev, B43_WARN_ON(key_idx >= dev->max_nr_keys); key = &(dev->key[key_idx]); - B43_WARN_ON(!key->keyconf); - - /* Hardware appends ICV. */ - plcp_fragment_len += txctl->icv_len; - - key_idx = b43_kidx_to_fw(dev, key_idx); - mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) & - B43_TXH_MAC_KEYIDX; - mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) & - B43_TXH_MAC_KEYALG; - wlhdr_len = ieee80211_get_hdrlen(fctl); - iv_len = min((size_t) txctl->iv_len, - ARRAY_SIZE(txhdr->iv)); - memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len); + + if (likely(key->keyconf)) { + /* This key is valid. Use it for encryption. */ + + /* Hardware appends ICV. */ + plcp_fragment_len += txctl->icv_len; + + key_idx = b43_kidx_to_fw(dev, key_idx); + mac_ctl |= (key_idx << B43_TXH_MAC_KEYIDX_SHIFT) & + B43_TXH_MAC_KEYIDX; + mac_ctl |= (key->algorithm << B43_TXH_MAC_KEYALG_SHIFT) & + B43_TXH_MAC_KEYALG; + wlhdr_len = ieee80211_get_hdrlen(fctl); + iv_len = min((size_t) txctl->iv_len, + ARRAY_SIZE(txhdr->iv)); + memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len); + } } if (b43_is_old_txhdr_format(dev)) { b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->old_format.plcp), |