The TX/RX path all use the local->wep_tfm to encrypt and decrypt
packets. Each {en|de}crypt operation need set a new RC4key,
this may corrupt the previous set key that is still being used.
Thus cause a lot of decrypton error or encryption with the wrong key.
Use two tfm (tx_tfm and rx_tfm) to avoid
The TX/RX path all use the local->wep_tfm to encrypt and decrypt
packets. Each {en|de}crypt operation need set a new RC4key,
this may corrupt the previous set key that is still being used.
Thus cause a lot of decrypton error or encryption with the wrong key.
Use two tfm (tx_tfm and rx_tfm) to avoid
