diff options
| -rw-r--r-- | sys/dev/ath/if_ath.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/dev/ath/if_ath.c b/sys/dev/ath/if_ath.c index 1369f93..e5c6fb0 100644 --- a/sys/dev/ath/if_ath.c +++ b/sys/dev/ath/if_ath.c @@ -1735,7 +1735,14 @@ ath_tx_start(struct ath_softc *sc, struct ieee80211_node *ni, struct ath_buf *bf * So we use pseudo random IV for now, though it is not the * right way. */ - iv = arc4random(); + iv = ic->ic_iv; + /* + * Skip 'bad' IVs from Fluhrer/Mantin/Shamir: + * (B, 255, N) with 3 <= B < 8 + */ + if (iv >= 0x03ff00 && (iv & 0xf8ff00) == 0x00ff00) + iv += 0x000100; + ic->ic_iv = iv + 1; for (i = 0; i < IEEE80211_WEP_IVLEN; i++) { ivp[i] = iv; iv >>= 8; |
