From: Tomas Winkler <tomas.winkler@xxxxxxxxx>
This patch refactors ieee80211_get_qos_ctrl function and its usage
in iwlwifi drivers. Function is moved as inline into iwl-helpers.h.
Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-4965-rs.c | 17 +++++----
drivers/net/wireless/iwlwifi/iwl-dev.h | 1 -
drivers/net/wireless/iwlwifi/iwl-helpers.h | 19 ++++++++++
drivers/net/wireless/iwlwifi/iwl3945-base.c | 35 +++++++-----------
drivers/net/wireless/iwlwifi/iwl4965-base.c | 51 +++++++++++---------------
5 files changed, 63 insertions(+), 60 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
index ce70f2b..071c7b6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-rs.c
@@ -282,14 +282,20 @@ static void rs_tl_rm_old_stats(struct iwl4965_traffic_load *tl, u32 curr_time)
* increment traffic load value for tid and also remove
* any old values if passed the certain time period
*/
-static void rs_tl_add_packet(struct iwl4965_lq_sta *lq_data, u8 tid)
+static void rs_tl_add_packet(struct iwl4965_lq_sta *lq_data,
+ struct ieee80211_hdr *hdr)
{
u32 curr_time = jiffies_to_msecs(jiffies);
u32 time_diff;
s32 index;
struct iwl4965_traffic_load *tl = NULL;
+ u16 fc = le16_to_cpu(hdr->frame_control);
+ u8 tid;
- if (tid >= TID_MAX_LOAD_COUNT)
+ if (ieee80211_is_qos_data(fc)) {
+ u8 *qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
+ tid = qc[0] & 0xf;
+ } else
return;
tl = &lq_data->load[tid];
@@ -1670,7 +1676,6 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
u16 high_low;
#ifdef CONFIG_IWL4965_HT
u8 tid = MAX_TID_COUNT;
- __le16 *qc;
#endif
IWL_DEBUG_RATE("rate scale calculate new rate for skb\n");
@@ -1693,11 +1698,7 @@ static void rs_rate_scale_perform(struct iwl_priv *priv,
lq_sta = (struct iwl4965_lq_sta *)sta->rate_ctrl_priv;
#ifdef CONFIG_IWL4965_HT
- qc = ieee80211_get_qos_ctrl(hdr);
- if (qc) {
- tid = (u8)(le16_to_cpu(*qc) & 0xf);
- rs_tl_add_packet(lq_sta, tid);
- }
+ rs_tl_add_packet(lq_sta, hdr);
#endif
/*
* Select rate-scale / modulation-mode table to work with in
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index ddb950e..7bd99f9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -650,7 +650,6 @@ extern int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm);
extern unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,
const u8 *dest, int left);
-extern __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr);
extern void iwl4965_update_chain_flags(struct iwl_priv *priv);
int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src);
diff --git a/drivers/net/wireless/iwlwifi/iwl-helpers.h b/drivers/net/wireless/iwlwifi/iwl-helpers.h
index a443472..e4c3f84 100644
--- a/drivers/net/wireless/iwlwifi/iwl-helpers.h
+++ b/drivers/net/wireless/iwlwifi/iwl-helpers.h
@@ -235,6 +235,25 @@ static inline int ieee80211_is_reassoc_response(u16 fc)
((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_RESP);
}
+static inline int ieee80211_is_qos_data(u16 fc)
+{
+ return ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) &&
+ ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_QOS_DATA);
+}
+/**
+ * ieee80211_get_qos_ctrl - get pointer to the QoS control field
+ *
+ * This function returns the pointer to 802.11 header QoS field (2 bytes)
+ * This function doesn't check whether hdr is a QoS hdr, use with care
+ * @hdr: struct ieee80211_hdr *hdr
+ * @hdr_len: header length
+ */
+
+static inline u8 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr, int hdr_len)
+{
+ return ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
+}
+
static inline int iwl_check_bits(unsigned long field, unsigned long mask)
{
return ((field & mask) == mask) ? 1 : 0;
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index c1234ff..b8fb8d8 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -102,16 +102,6 @@ MODULE_VERSION(DRV_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT);
MODULE_LICENSE("GPL");
-static __le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
-{
- u16 fc = le16_to_cpu(hdr->frame_control);
- int hdr_len = ieee80211_get_hdrlen(fc);
-
- if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
- return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
- return NULL;
-}
-
static const struct ieee80211_supported_band *iwl3945_get_band(
struct iwl3945_priv *priv, enum ieee80211_band band)
{
@@ -2441,7 +2431,6 @@ static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
struct ieee80211_hdr *hdr,
int is_unicast, u8 std_id)
{
- __le16 *qc;
u16 fc = le16_to_cpu(hdr->frame_control);
__le32 tx_flags = cmd->cmd.tx.tx_flags;
@@ -2462,12 +2451,13 @@ static void iwl3945_build_tx_cmd_basic(struct iwl3945_priv *priv,
if (ieee80211_get_morefrag(hdr))
tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
- qc = ieee80211_get_qos_ctrl(hdr);
- if (qc) {
- cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
+ if (ieee80211_is_qos_data(fc)) {
+ u8 *qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
+ cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
- } else
+ } else {
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
+ }
if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
tx_flags |= TX_CMD_FLG_RTS_MSK;
@@ -2568,13 +2558,15 @@ static int iwl3945_tx_skb(struct iwl3945_priv *priv,
dma_addr_t phys_addr;
dma_addr_t txcmd_phys;
struct iwl3945_cmd *out_cmd = NULL;
- u16 len, idx, len_org;
- u8 id, hdr_len, unicast;
+ u16 len, idx, len_org, hdr_len;
+ u8 id;
+ u8 unicast;
u8 sta_id;
+ u8 tid = 0;
u16 seq_number = 0;
u16 fc;
- __le16 *qc;
u8 wait_write_ptr = 0;
+ u8 *qc = NULL;
unsigned long flags;
int rc;
@@ -2632,9 +2624,9 @@ static int iwl3945_tx_skb(struct iwl3945_priv *priv,
IWL_DEBUG_RATE("station Id %d\n", sta_id);
- qc = ieee80211_get_qos_ctrl(hdr);
- if (qc) {
- u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
+ if (ieee80211_is_qos_data(fc)) {
+ qc = ieee80211_get_qos_ctrl(hdr, hdr_len);
+ tid = qc[0] & 0xf;
seq_number = priv->stations[sta_id].tid[tid].seq_number &
IEEE80211_SCTL_SEQ;
hdr->seq_ctrl = cpu_to_le16(seq_number) |
@@ -2745,7 +2737,6 @@ static int iwl3945_tx_skb(struct iwl3945_priv *priv,
if (!ieee80211_get_morefrag(hdr)) {
txq->need_update = 1;
if (qc) {
- u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
priv->stations[sta_id].tid[tid].seq_number = seq_number;
}
} else {
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 6d5b58f..e3f872e 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -89,16 +89,6 @@ MODULE_VERSION(DRV_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT);
MODULE_LICENSE("GPL");
-__le16 *ieee80211_get_qos_ctrl(struct ieee80211_hdr *hdr)
-{
- u16 fc = le16_to_cpu(hdr->frame_control);
- int hdr_len = ieee80211_get_hdrlen(fc);
-
- if ((fc & 0x00cc) == (IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA))
- return (__le16 *) ((u8 *) hdr + hdr_len - QOS_CONTROL_LEN);
- return NULL;
-}
-
static const struct ieee80211_supported_band *iwl_get_hw_mode(
struct iwl_priv *priv, enum ieee80211_band band)
{
@@ -1532,7 +1522,6 @@ static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,
int is_unicast, u8 std_id)
{
- __le16 *qc;
u16 fc = le16_to_cpu(hdr->frame_control);
__le32 tx_flags = cmd->cmd.tx.tx_flags;
@@ -1557,12 +1546,13 @@ static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv,
if (ieee80211_get_morefrag(hdr))
tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
- qc = ieee80211_get_qos_ctrl(hdr);
- if (qc) {
- cmd->cmd.tx.tid_tspec = (u8) (le16_to_cpu(*qc) & 0xf);
+ if (ieee80211_is_qos_data(fc)) {
+ u8 *qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
+ cmd->cmd.tx.tid_tspec = qc[0] & 0xf;
tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
- } else
+ } else {
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
+ }
if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
tx_flags |= TX_CMD_FLG_RTS_MSK;
@@ -1614,12 +1604,15 @@ static int iwl4965_tx_skb(struct iwl_priv *priv,
dma_addr_t scratch_phys;
struct iwl_cmd *out_cmd = NULL;
u16 len, idx, len_org;
- u8 id, hdr_len, unicast;
+ u8 hdr_len;
+ u8 id;
+ u8 unicast;
u8 sta_id;
+ u8 tid = 0;
+ u8 wait_write_ptr = 0;
u16 seq_number = 0;
u16 fc;
- __le16 *qc;
- u8 wait_write_ptr = 0;
+ u8 *qc = NULL;
unsigned long flags;
int rc;
@@ -1678,9 +1671,9 @@ static int iwl4965_tx_skb(struct iwl_priv *priv,
IWL_DEBUG_TX("station Id %d\n", sta_id);
- qc = ieee80211_get_qos_ctrl(hdr);
- if (qc) {
- u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
+ if (ieee80211_is_qos_data(fc)) {
+ qc = ieee80211_get_qos_ctrl(hdr, hdr_len);
+ tid = qc[0] & 0xf;
seq_number = priv->stations[sta_id].tid[tid].seq_number &
IEEE80211_SCTL_SEQ;
hdr->seq_ctrl = cpu_to_le16(seq_number) |
@@ -1795,10 +1788,8 @@ static int iwl4965_tx_skb(struct iwl_priv *priv,
if (!ieee80211_get_morefrag(hdr)) {
txq->need_update = 1;
- if (qc) {
- u8 tid = (u8)(le16_to_cpu(*qc) & 0xf);
+ if (qc)
priv->stations[sta_id].tid[tid].seq_number = seq_number;
- }
} else {
wait_write_ptr = 1;
txq->need_update = 0;
@@ -2377,8 +2368,9 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
u32 status = le32_to_cpu(tx_resp->status);
#ifdef CONFIG_IWL4965_HT
int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
+ u16 fc;
struct ieee80211_hdr *hdr;
- __le16 *qc;
+ u8 *qc = NULL;
#endif
if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
@@ -2391,10 +2383,11 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
#ifdef CONFIG_IWL4965_HT
hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
- qc = ieee80211_get_qos_ctrl(hdr);
-
- if (qc)
- tid = le16_to_cpu(*qc) & 0xf;
+ fc = le16_to_cpu(hdr->frame_control);
+ if (ieee80211_is_qos_data(fc)) {
+ qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
+ tid = qc[0] & 0xf;
+ }
sta_id = iwl4965_get_ra_sta_id(priv, hdr);
if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
--
1.5.3.6
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