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Correctly name Data type Null subtype frame. 

Do not try to process Null and QoS Null frames as data.


git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@3749 0192ed92-7a03-0410-a25b-9323aeb14dbd
This commit is contained in:
mentor 2008-07-05 01:00:32 +00:00
parent 3f948507e7
commit 9a2f6efd63
4 changed files with 11 additions and 15 deletions
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2
ath/if_ath.c
View File

@ -7849,7 +7849,7 @@ ath_tx_start(struct net_device *dev, struct ieee80211_node *ni,
if (ATH_NODE(ni)->an_decomp_index != INVALID_DECOMP_INDEX &&
!ismcast &&
((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_DATA) &&
((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) != IEEE80211_FC0_SUBTYPE_NODATA)) {
((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) != IEEE80211_FC0_SUBTYPE_NULL)) {
if (pktlen > ATH_COMP_THRESHOLD)
comp = ATH_COMP_PROC_COMP_OPTIMAL;
else

2
net80211/ieee80211.h
View File

@ -149,7 +149,7 @@ struct ieee80211_ctlframe_addr2 {
#define IEEE80211_FC0_SUBTYPE_CF_ACK 0x10
#define IEEE80211_FC0_SUBTYPE_CF_POLL 0x20
#define IEEE80211_FC0_SUBTYPE_CF_ACPL 0x30
#define IEEE80211_FC0_SUBTYPE_NODATA 0x40
#define IEEE80211_FC0_SUBTYPE_NULL 0x40
#define IEEE80211_FC0_SUBTYPE_CFACK 0x50
#define IEEE80211_FC0_SUBTYPE_CFPOLL 0x60
#define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK 0x70

20
net80211/ieee80211_input.c
View File

@ -605,6 +605,11 @@ ieee80211_input(struct ieee80211vap *vap, struct ieee80211_node *ni_or_null,
goto out;
}
/* These frames have no further meaning. */
if ((subtype == IEEE80211_FC0_SUBTYPE_NULL) ||
(subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL))
goto out;
/*
* Handle privacy requirements. Note that we
* must not be preempted from here until after
@ -635,9 +640,7 @@ ieee80211_input(struct ieee80211vap *vap, struct ieee80211_node *ni_or_null,
} else
key = NULL;
/*
* Next up, any fragmentation.
*/
/* Next up, any fragmentation. */
if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
skb = ieee80211_defrag(ni, skb, hdrlen);
if (skb == NULL) {
@ -647,9 +650,7 @@ ieee80211_input(struct ieee80211vap *vap, struct ieee80211_node *ni_or_null,
}
wh = NULL; /* no longer valid, catch any uses */
/*
* Next strip any MSDU crypto bits.
*/
/* Next strip any MSDU crypto. bits. */
if (key != NULL &&
!ieee80211_crypto_demic(vap, key, skb, hdrlen, 0)) {
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
@ -658,14 +659,9 @@ ieee80211_input(struct ieee80211vap *vap, struct ieee80211_node *ni_or_null,
goto out;
}
/*
* Finally, strip the 802.11 header.
*/
/* Finally, strip the 802.11 header. */
skb = ieee80211_decap(vap, skb, hdrlen);
if (skb == NULL) {
/* don't count Null data frames as errors */
if (subtype == IEEE80211_FC0_SUBTYPE_NODATA)
goto out;
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
ni->ni_macaddr, "data", "%s", "decap error");
vap->iv_stats.is_rx_decap++;

2
net80211/ieee80211_output.c
View File

@ -463,7 +463,7 @@ ieee80211_send_nulldata(struct ieee80211_node *ni)
wh = (struct ieee80211_frame *)
skb_push(skb, sizeof(struct ieee80211_frame));
ieee80211_send_setup(vap, ni, wh,
IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_NODATA,
IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_NULL,
vap->iv_myaddr, ni->ni_macaddr, vap->iv_bssid);
/* NB: power management bit is never sent by an AP */
if ((IEEE80211_VAP_IS_SLEEPING(ni->ni_vap)) &&