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authorSujith Manoharan <c_manoha@qca.qualcomm.com>2014-10-08 07:13:19 +0400
committerJohn W. Linville <linville@tuxdriver.com>2014-10-08 23:24:15 +0400
commitca14405e3b25b38221d027d8970c1d74ed0b6532 (patch)
treee4ea8b1a4e189c9d9d7e7a3fc4b6b018a08b3a3d /drivers/net/wireless/ath
parent2f29fed3f814f652a24b10c975b9d415a154fc9c (diff)
downloadlinux-ca14405e3b25b38221d027d8970c1d74ed0b6532.tar.xz
ath9k: Fix sequence number assignment
Currently, ath9k uses a global counter for all frames that need to be assigned a sequence number. QoS-data frames are handled properly since they have a per-tid counter. But, beacons and other management frames use the same counter even if multiple interfaces or contexts are present. Fix this issue by making the counter per-interface and using it when mac80211 sets IEEE80211_TX_CTL_ASSIGN_SEQ. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath')
-rw-r--r--drivers/net/wireless/ath/ath9k/ath9k.h4
-rw-r--r--drivers/net/wireless/ath/ath9k/beacon.c12
-rw-r--r--drivers/net/wireless/ath/ath9k/tx99.c8
-rw-r--r--drivers/net/wireless/ath/ath9k/xmit.c34
4 files changed, 35 insertions, 23 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index bfa0b1518da1..01a7db061c6a 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -294,7 +294,6 @@ struct ath_tx_control {
* (axq_qnum).
*/
struct ath_tx {
- u16 seq_no;
u32 txqsetup;
spinlock_t txbuflock;
struct list_head txbuf;
@@ -563,6 +562,7 @@ int ath_tx_init(struct ath_softc *sc, int nbufs);
int ath_txq_update(struct ath_softc *sc, int qnum,
struct ath9k_tx_queue_info *q);
void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop);
+void ath_assign_seq(struct ath_common *common, struct sk_buff *skb);
int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ath_tx_control *txctl);
void ath_tx_cabq(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
@@ -592,6 +592,8 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
struct ath_vif {
struct list_head list;
+ u16 seq_no;
+
/* BSS info */
u8 bssid[ETH_ALEN];
u16 aid;
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index a6af855ef6ed..ecb783beeec2 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -144,16 +144,8 @@ static struct ath_buf *ath9k_beacon_generate(struct ieee80211_hw *hw,
mgmt_hdr->u.beacon.timestamp = avp->tsf_adjust;
info = IEEE80211_SKB_CB(skb);
- if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
- /*
- * TODO: make sure the seq# gets assigned properly (vs. other
- * TX frames)
- */
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- sc->tx.seq_no += 0x10;
- hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
- hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
- }
+
+ ath_assign_seq(common, skb);
if (vif->p2p)
ath9k_beacon_add_noa(sc, avp, skb);
diff --git a/drivers/net/wireless/ath/ath9k/tx99.c b/drivers/net/wireless/ath/ath9k/tx99.c
index 8a69d08ec55c..40ab65e6882f 100644
--- a/drivers/net/wireless/ath/ath9k/tx99.c
+++ b/drivers/net/wireless/ath/ath9k/tx99.c
@@ -54,6 +54,12 @@ static struct sk_buff *ath9k_build_tx99_skb(struct ath_softc *sc)
struct ieee80211_hdr *hdr;
struct ieee80211_tx_info *tx_info;
struct sk_buff *skb;
+ struct ath_vif *avp;
+
+ if (!sc->tx99_vif)
+ return NULL;
+
+ avp = (struct ath_vif *)sc->tx99_vif->drv_priv;
skb = alloc_skb(len, GFP_KERNEL);
if (!skb)
@@ -71,7 +77,7 @@ static struct sk_buff *ath9k_build_tx99_skb(struct ath_softc *sc)
memcpy(hdr->addr2, hw->wiphy->perm_addr, ETH_ALEN);
memcpy(hdr->addr3, hw->wiphy->perm_addr, ETH_ALEN);
- hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
+ hdr->seq_ctrl |= cpu_to_le16(avp->seq_no);
tx_info = IEEE80211_SKB_CB(skb);
memset(tx_info, 0, sizeof(*tx_info));
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 151ae49fa57e..493a183d0aaf 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -2139,6 +2139,28 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc,
return bf;
}
+void ath_assign_seq(struct ath_common *common, struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_vif *vif = info->control.vif;
+ struct ath_vif *avp;
+
+ if (!(info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ))
+ return;
+
+ if (!vif)
+ return;
+
+ avp = (struct ath_vif *)vif->drv_priv;
+
+ if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
+ avp->seq_no += 0x10;
+
+ hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+ hdr->seq_ctrl |= cpu_to_le16(avp->seq_no);
+}
+
static int ath_tx_prepare(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ath_tx_control *txctl)
{
@@ -2162,17 +2184,7 @@ static int ath_tx_prepare(struct ieee80211_hw *hw, struct sk_buff *skb,
if (info->control.hw_key)
frmlen += info->control.hw_key->icv_len;
- /*
- * As a temporary workaround, assign seq# here; this will likely need
- * to be cleaned up to work better with Beacon transmission and virtual
- * BSSes.
- */
- if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
- if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
- sc->tx.seq_no += 0x10;
- hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
- hdr->seq_ctrl |= cpu_to_le16(sc->tx.seq_no);
- }
+ ath_assign_seq(ath9k_hw_common(sc->sc_ah), skb);
if ((vif && vif->type != NL80211_IFTYPE_AP &&
vif->type != NL80211_IFTYPE_AP_VLAN) ||