mac80211: use CMAC_PN_LEN

Instead of hardcoding its value (6), use the constant.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index d27e61aaa71b..0f18ef59392d 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -372,8 +372,9 @@ struct ieee80211_key *ieee80211_key_alloc(u32 cipher, int idx, size_t key_len,
                 key->conf.iv_len = 0;
                 key->conf.icv_len = sizeof(struct ieee80211_mmie);
                 if (seq)
-                        for (j = 0; j < 6; j++)
-                                key->u.aes_cmac.rx_pn[j] = seq[6 - j - 1];
+                        for (j = 0; j < CMAC_PN_LEN; j++)
+                                key->u.aes_cmac.rx_pn[j] =
+                                        seq[CMAC_PN_LEN - j - 1];
                 /*
                  * Initialize AES key state here as an optimization so that
                  * it does not need to be initialized for every packet.