Add host_open_frag to indicate if fragmentation is need to be done by host.

Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
--
diff -urp ieee80211-1.0.3/ieee80211_module.c ieee80211-1.0.3-open-frag/ieee80211_module.c
--- ieee80211-1.0.3/ieee80211_module.c	2005-07-15 07:53:35.000000000 +0800
+++ ieee80211-1.0.3-open-frag/ieee80211_module.c	2005-08-03 16:12:25.000000000 +0800
@@ -137,6 +137,11 @@ struct net_device *alloc_ieee80211(int s
 	/* Default to enabling full open WEP with host based encrypt/decrypt */
 	ieee->host_encrypt = 1;
 	ieee->host_decrypt = 1;
+	/* Host fragementation in Open mode. Default is enabled. Note host
+	 * fragmentation is always enabled if host encryption is enabled.
+	 * For cards can do hardware encryption, they can do hardware
+	 * fragmentation as well. So we don't need a variable host_enc_frag. */
+	ieee->host_open_frag = 1;
 	ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
 
 	INIT_LIST_HEAD(&ieee->crypt_deinit_list);
@@ -151,7 +156,6 @@ struct net_device *alloc_ieee80211(int s
  	ieee->tkip_countermeasures = 0;
  	ieee->drop_unencrypted = 0;
  	ieee->privacy_invoked = 0;
- 	ieee->ieee802_1x = 1;
 
 	return dev;
 
diff -urp ieee80211-1.0.3/ieee80211_tx.c ieee80211-1.0.3-open-frag/ieee80211_tx.c
--- ieee80211-1.0.3/ieee80211_tx.c	2005-07-15 07:53:35.000000000 +0800
+++ ieee80211-1.0.3-open-frag/ieee80211_tx.c	2005-08-03 16:12:25.000000000 +0800
@@ -363,7 +363,7 @@ int ieee80211_xmit(struct sk_buff *skb,
 		skb_pull(skb, hdr_len);
 	}
 
-	if (host_encrypt) {
+	if (host_encrypt || ieee->host_open_frag) {
 		/* Determine fragmentation size based on destination (multicast
 		 * and broadcast are not fragmented) */
 		if (is_multicast_ether_addr(dest))
@@ -382,8 +382,9 @@ int ieee80211_xmit(struct sk_buff *skb,
 
 		/* Each fragment may need to have room for encryptiong
 		 * pre/postfix */
-		bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len +
-			crypt->ops->extra_mpdu_postfix_len;
+		if (host_encrypt)
+			bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len +
+					  crypt->ops->extra_mpdu_postfix_len;
 
 		/* Number of fragments is the total
 		 * bytes_per_frag / payload_per_fragment */
diff -urp ieee80211-1.0.3/net/ieee80211.h ieee80211-1.0.3-open-frag/net/ieee80211.h
--- ieee80211-1.0.3/net/ieee80211.h	2005-07-15 07:53:35.000000000 +0800
+++ ieee80211-1.0.3-open-frag/net/ieee80211.h	2005-08-03 16:12:25.000000000 +0800
@@ -798,6 +798,7 @@ struct ieee80211_device {
 	int host_encrypt;
 	int host_encrypt_msdu;
 	int host_decrypt;
+	int host_open_frag;
 	int ieee802_1x; /* is IEEE 802.1X used */
 
 	/* WPA data */