From: Roland Vossen <rvossen@xxxxxxxxxxxx>
Global variables are undesirable unless they are read only. Removed by
instead using an already defined Station Control Block variable in a
per-device structure.
Reported-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@xxxxxxxxxxxx>
Reviewed-by: Arend van Spriel <arend@xxxxxxxxxxxx>
Signed-off-by: Franky Lin <frankyl@xxxxxxxxxxxx>
---
drivers/staging/brcm80211/brcmsmac/ampdu.c | 6 +++---
drivers/staging/brcm80211/brcmsmac/mac80211_if.c | 19 ++++---------------
drivers/staging/brcm80211/brcmsmac/main.c | 21 +++++++++++++--------
drivers/staging/brcm80211/brcmsmac/main.h | 4 ++++
drivers/staging/brcm80211/brcmsmac/pub.h | 1 -
5 files changed, 24 insertions(+), 27 deletions(-)
diff --git a/drivers/staging/brcm80211/brcmsmac/ampdu.c b/drivers/staging/brcm80211/brcmsmac/ampdu.c
index b94d60c..e29c62e 100644
--- a/drivers/staging/brcm80211/brcmsmac/ampdu.c
+++ b/drivers/staging/brcm80211/brcmsmac/ampdu.c
@@ -314,7 +314,7 @@ static void brcms_c_scb_ampdu_update_config(struct ampdu_info *ampdu,
static void brcms_c_scb_ampdu_update_config_all(struct ampdu_info *ampdu)
{
- brcms_c_scb_ampdu_update_config(ampdu, ampdu->wlc->pub->global_scb);
+ brcms_c_scb_ampdu_update_config(ampdu, &du->wlc->pri_scb);
}
static void brcms_c_ffpld_calc_mcs2ampdu_table(struct ampdu_info *ampdu, int f)
@@ -482,7 +482,7 @@ brcms_c_ampdu_tx_operational(struct brcms_c_info *wlc, u8 tid,
struct scb_ampdu *scb_ampdu;
struct scb_ampdu_tid_ini *ini;
struct ampdu_info *ampdu = wlc->ampdu;
- struct scb *scb = wlc->pub->global_scb;
+ struct scb *scb = &wlc->pri_scb;
scb_ampdu = &scb->scb_ampdu;
if (!ampdu->ini_enable[tid]) {
@@ -542,7 +542,7 @@ brcms_c_sendampdu(struct ampdu_info *ampdu, struct brcms_txq_info *qi,
f = ampdu->fifo_tb + prio2fifo[tid];
- scb = wlc->pub->global_scb;
+ scb = &wlc->pri_scb;
scb_ampdu = &scb->scb_ampdu;
ini = &scb_ampdu->ini[tid];
diff --git a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c
index 938bbe6..d22903e 100644
--- a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c
@@ -616,25 +616,14 @@ static int
brcms_ops_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
- struct scb *scb;
-
- int i;
struct brcms_info *wl = hw->priv;
+ struct scb *scb = &wl->wlc->pri_scb;
- /* Init the scb */
- scb = (struct scb *)sta->drv_priv;
- memset(scb, 0, sizeof(struct scb));
- for (i = 0; i < NUMPRIO; i++)
- scb->seqctl[i] = 0xFFFF;
- scb->seqctl_nonqos = 0xFFFF;
- scb->magic = SCB_MAGIC;
+ brcms_c_init_scb(scb);
- wl->pub->global_scb = scb;
wl->pub->global_ampdu = &(scb->scb_ampdu);
wl->pub->global_ampdu->scb = scb;
wl->pub->global_ampdu->max_pdu = 16;
- brcmu_pktq_init(&scb->scb_ampdu.txq, AMPDU_MAX_SCB_TID,
- AMPDU_MAX_SCB_TID * PKTQ_LEN_DEFAULT);
sta->ht_cap.ht_supported = true;
sta->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
@@ -657,8 +646,8 @@ brcms_ops_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_sta *sta, u16 tid, u16 *ssn,
u8 buf_size)
{
- struct scb *scb = (struct scb *)sta->drv_priv;
struct brcms_info *wl = hw->priv;
+ struct scb *scb = &wl->wlc->pri_scb;
int status;
if (WARN_ON(scb->magic != SCB_MAGIC))
@@ -1038,7 +1027,7 @@ static int ieee_hw_init(struct ieee80211_hw *hw)
hw->rate_control_algorithm = "minstrel_ht";
- hw->sta_data_size = sizeof(struct scb);
+ hw->sta_data_size = 0;
return ieee_hw_rate_init(hw);
}
diff --git a/drivers/staging/brcm80211/brcmsmac/main.c b/drivers/staging/brcm80211/brcmsmac/main.c
index 407e99e..5edf8b8 100644
--- a/drivers/staging/brcm80211/brcmsmac/main.c
+++ b/drivers/staging/brcm80211/brcmsmac/main.c
@@ -882,7 +882,7 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
if (tx_info->control.sta)
- scb = (struct scb *)tx_info->control.sta->drv_priv;
+ scb = &wlc->pri_scb;
if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
brcms_c_ampdu_dotxstatus(wlc->ampdu, scb, p, txs);
@@ -3337,14 +3337,21 @@ static u16 brcms_c_init_chanspec(struct brcms_c_info *wlc)
return chanspec;
}
-static struct scb global_scb;
-
-static void brcms_c_init_scb(struct brcms_c_info *wlc, struct scb *scb)
+void brcms_c_init_scb(struct scb *scb)
{
int i;
+
+ memset(scb, 0, sizeof(struct scb));
scb->flags = SCB_WMECAP | SCB_HTCAP;
- for (i = 0; i < NUMPRIO; i++)
+ for (i = 0; i < NUMPRIO; i++) {
scb->seqnum[i] = 0;
+ scb->seqctl[i] = 0xFFFF;
+ }
+
+ scb->seqctl_nonqos = 0xFFFF;
+ scb->magic = SCB_MAGIC;
+ brcmu_pktq_init(&scb->scb_ampdu.txq, AMPDU_MAX_SCB_TID,
+ AMPDU_MAX_SCB_TID * PKTQ_LEN_DEFAULT);
}
/* d11 core init
@@ -3805,8 +3812,6 @@ void brcms_c_init(struct brcms_c_info *wlc)
brcms_c_bandinit_ordered(wlc, chanspec);
- brcms_c_init_scb(wlc, &global_scb);
-
/* init probe response timeout */
brcms_c_write_shm(wlc, M_PRS_MAXTIME, wlc->prb_resp_timeout);
@@ -7685,7 +7690,7 @@ void brcms_c_sendpkt_mac80211(struct brcms_c_info *wlc, struct sk_buff *sdu,
{
u8 prio;
uint fifo;
- struct scb *scb = &global_scb;
+ struct scb *scb = &wlc->pri_scb;
struct ieee80211_hdr *d11_header = (struct ieee80211_hdr *)(sdu->data);
/*
diff --git a/drivers/staging/brcm80211/brcmsmac/main.h b/drivers/staging/brcm80211/brcmsmac/main.h
index 9e12a14..47665da 100644
--- a/drivers/staging/brcm80211/brcmsmac/main.h
+++ b/drivers/staging/brcm80211/brcmsmac/main.h
@@ -22,6 +22,7 @@
#include <brcmu_utils.h>
#include "types.h"
#include "d11.h"
+#include "scb.h"
#define INVCHANNEL 255 /* invalid channel */
@@ -483,6 +484,7 @@ struct brcms_txq_info {
* tx_duty_cycle_cck: maximum allowed duty cycle for CCK.
* pkt_queue: txq for transmit packets.
* wiphy:
+ * pri_scb: primary Station Control Block
*/
struct brcms_c_info {
struct brcms_pub *pub;
@@ -610,6 +612,7 @@ struct brcms_c_info {
struct brcms_txq_info *pkt_queue;
struct wiphy *wiphy;
+ struct scb pri_scb;
};
/* antsel module specific state */
@@ -864,5 +867,6 @@ extern void brcms_b_core_phypll_ctl(struct brcms_hardware *wlc_hw, bool on);
extern void brcms_b_txant_set(struct brcms_hardware *wlc_hw, u16 phytxant);
extern void brcms_b_band_stf_ss_set(struct brcms_hardware *wlc_hw,
u8 stf_mode);
+extern void brcms_c_init_scb(struct scb *scb);
#endif /* _BRCM_MAIN_H_ */
diff --git a/drivers/staging/brcm80211/brcmsmac/pub.h b/drivers/staging/brcm80211/brcmsmac/pub.h
index 9670309..b69833e 100644
--- a/drivers/staging/brcm80211/brcmsmac/pub.h
+++ b/drivers/staging/brcm80211/brcmsmac/pub.h
@@ -144,7 +144,6 @@ struct brcms_bss_info {
struct brcms_pub {
struct brcms_c_info *wlc;
struct ieee80211_hw *ieee_hw;
- struct scb *global_scb;
struct scb_ampdu *global_ampdu;
uint mac80211_state;
uint unit; /* device instance number */
--
1.7.1
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