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iwlwifi: refactor ieee80211_get_qos_ctrl

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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@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Tomas Winkler 2008-05-15 13:54:06 +08:00 committed by John W. Linville
parent 83d527d9e8
commit 54dbb525e7
5 changed files with 63 additions and 60 deletions
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17
drivers/net/wireless/iwlwifi/iwl-4965-rs.c
View File

@ -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

1
drivers/net/wireless/iwlwifi/iwl-dev.h
View File

@ -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);

19
drivers/net/wireless/iwlwifi/iwl-helpers.h
View File

@ -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;

35
drivers/net/wireless/iwlwifi/iwl3945-base.c
View File

@ -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 {

51
drivers/net/wireless/iwlwifi/iwl4965-base.c
View File

@ -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)) {