mac80211: remove the ccmp rx pn workaround, it should no longer be necessary and...

git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@27765 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/mac80211/patches/420-mac80211_ignore_invalid_ccmp_rx_pn.patch b/package/mac80211/patches/420-mac80211_ignore_invalid_ccmp_rx_pn.patch
deleted file mode 100644 (file)
index 0222f54..0000000
--- a/package/mac80211/patches/420-mac80211_ignore_invalid_ccmp_rx_pn.patch
+++ /dev/null
@@ -1,46 +0,0 @@
---- a/net/mac80211/key.h
-+++ b/net/mac80211/key.h
-@@ -90,6 +90,7 @@ struct ieee80211_key {
-                        * Management frames.
-                        */
-                       u8 rx_pn[NUM_RX_DATA_QUEUES + 1][6];
-+                      u8 rx_invalid_pn[NUM_RX_DATA_QUEUES + 1];
-                       struct crypto_cipher *tfm;
-                       u32 replays; /* dot11RSNAStatsCCMPReplays */
- #ifndef AES_BLOCK_LEN
---- a/net/mac80211/wpa.c
-+++ b/net/mac80211/wpa.c
-@@ -457,6 +457,13 @@ ieee80211_crypto_ccmp_encrypt(struct iee
-       return TX_CONTINUE;
- }
- 
-+static inline u64 pn_to_u64(u8 *data)
-+{
-+      u64 pn = get_unaligned_be32(data + 2);
-+      pn |= ((u64) get_unaligned_be16(data)) << 32;
-+      return pn;
-+}
-+
- 
- ieee80211_rx_result
- ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
-@@ -469,6 +476,7 @@ ieee80211_crypto_ccmp_decrypt(struct iee
-       u8 pn[CCMP_PN_LEN];
-       int data_len;
-       int queue;
-+      u64 diff;
- 
-       hdrlen = ieee80211_hdrlen(hdr->frame_control);
- 
-@@ -503,6 +511,11 @@ ieee80211_crypto_ccmp_decrypt(struct iee
-                       return RX_DROP_UNUSABLE;
-       }
- 
-+      diff = pn_to_u64(pn) - pn_to_u64(key->u.ccmp.rx_pn[queue]);
-+      if (diff > 1000 && key->u.ccmp.rx_invalid_pn[queue]++ < 10)
-+              return RX_DROP_UNUSABLE;
-+
-+      key->u.ccmp.rx_invalid_pn[queue] = 0;
-       memcpy(key->u.ccmp.rx_pn[queue], pn, CCMP_PN_LEN);
- 
-       /* Remove CCMP header and MIC */