From 0e866cfb0dd973e6d3d7f472d05a6e5f386510b0 Mon Sep 17 00:00:00 2001 From: Ajay Singh Date: Tue, 4 Sep 2018 12:09:21 +0530 Subject: [PATCH] staging: wilc1000: moved last_scanned_shadow & last_scanned_cnt to wilc_priv struct Avoid use of static variables and moved the varibles as part of private data. last_scanned_shadow & last_scanned_cnt variable is moved to 'wilc_priv' to maintain for each interface. After moving static variable, clear_shadow_scan() doesn't require check 'op_ifcs' count as now for each interface the againg timer is initiated. Signed-off-by: Ajay Singh Signed-off-by: Greg Kroah-Hartman --- .../staging/wilc1000/wilc_wfi_cfgoperations.c | 105 +++++++++--------- drivers/staging/wilc1000/wilc_wfi_netdevice.h | 2 + 2 files changed, 52 insertions(+), 55 deletions(-) diff --git a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c index 00a167bd7308..1eac244cc7b4 100644 --- a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c +++ b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c @@ -82,8 +82,6 @@ static const struct wiphy_wowlan_support wowlan_support = { .flags = WIPHY_WOWLAN_ANY }; -static struct network_info last_scanned_shadow[MAX_NUM_SCANNED_NETWORKS_SHADOW]; -static u32 last_scanned_cnt; struct timer_list wilc_during_ip_timer; static u8 op_ifcs; @@ -157,21 +155,18 @@ static struct ieee80211_supported_band wilc_band_2ghz = { #define AGING_TIME (9 * 1000) #define DURING_IP_TIME_OUT 15000 -static void clear_shadow_scan(void) +static void clear_shadow_scan(struct wilc_priv *priv) { int i; - if (op_ifcs != 0) - return; - - for (i = 0; i < last_scanned_cnt; i++) { - kfree(last_scanned_shadow[i].ies); - last_scanned_shadow[i].ies = NULL; + for (i = 0; i < priv->scanned_cnt; i++) { + kfree(priv->scanned_shadow[i].ies); + priv->scanned_shadow[i].ies = NULL; - kfree(last_scanned_shadow[i].join_params); - last_scanned_shadow[i].join_params = NULL; + kfree(priv->scanned_shadow[i].join_params); + priv->scanned_shadow[i].join_params = NULL; } - last_scanned_cnt = 0; + priv->scanned_cnt = 0; } static u32 get_rssi_avg(struct network_info *network_info) @@ -193,14 +188,14 @@ static void refresh_scan(struct wilc_priv *priv, bool direct_scan) struct wiphy *wiphy = priv->dev->ieee80211_ptr->wiphy; int i; - for (i = 0; i < last_scanned_cnt; i++) { + for (i = 0; i < priv->scanned_cnt; i++) { struct network_info *network_info; s32 freq; struct ieee80211_channel *channel; int rssi; struct cfg80211_bss *bss; - network_info = &last_scanned_shadow[i]; + network_info = &priv->scanned_shadow[i]; if (!memcmp("DIRECT-", network_info->ssid, 7) && !direct_scan) continue; @@ -224,20 +219,20 @@ static void refresh_scan(struct wilc_priv *priv, bool direct_scan) } } -static void reset_shadow_found(void) +static void reset_shadow_found(struct wilc_priv *priv) { int i; - for (i = 0; i < last_scanned_cnt; i++) - last_scanned_shadow[i].found = 0; + for (i = 0; i < priv->scanned_cnt; i++) + priv->scanned_shadow[i].found = 0; } -static void update_scan_time(void) +static void update_scan_time(struct wilc_priv *priv) { int i; - for (i = 0; i < last_scanned_cnt; i++) - last_scanned_shadow[i].time_scan = jiffies; + for (i = 0; i < priv->scanned_cnt; i++) + priv->scanned_shadow[i].time_scan = jiffies; } static void remove_network_from_shadow(struct timer_list *t) @@ -246,22 +241,22 @@ static void remove_network_from_shadow(struct timer_list *t) unsigned long now = jiffies; int i, j; - for (i = 0; i < last_scanned_cnt; i++) { - if (!time_after(now, last_scanned_shadow[i].time_scan + + for (i = 0; i < priv->scanned_cnt; i++) { + if (!time_after(now, priv->scanned_shadow[i].time_scan + (unsigned long)(SCAN_RESULT_EXPIRE))) continue; - kfree(last_scanned_shadow[i].ies); - last_scanned_shadow[i].ies = NULL; + kfree(priv->scanned_shadow[i].ies); + priv->scanned_shadow[i].ies = NULL; - kfree(last_scanned_shadow[i].join_params); + kfree(priv->scanned_shadow[i].join_params); - for (j = i; (j < last_scanned_cnt - 1); j++) - last_scanned_shadow[j] = last_scanned_shadow[j + 1]; + for (j = i; (j < priv->scanned_cnt - 1); j++) + priv->scanned_shadow[j] = priv->scanned_shadow[j + 1]; - last_scanned_cnt--; + priv->scanned_cnt--; } - if (last_scanned_cnt != 0) + if (priv->scanned_cnt != 0) mod_timer(&priv->aging_timer, jiffies + msecs_to_jiffies(AGING_TIME)); } @@ -277,13 +272,13 @@ static int is_network_in_shadow(struct network_info *nw_info, int state = -1; int i; - if (last_scanned_cnt == 0) { + if (priv->scanned_cnt == 0) { mod_timer(&priv->aging_timer, jiffies + msecs_to_jiffies(AGING_TIME)); state = -1; } else { - for (i = 0; i < last_scanned_cnt; i++) { - if (memcmp(last_scanned_shadow[i].bssid, + for (i = 0; i < priv->scanned_cnt; i++) { + if (memcmp(priv->scanned_shadow[i].bssid, nw_info->bssid, 6) == 0) { state = i; break; @@ -301,16 +296,16 @@ static void add_network_to_shadow(struct network_info *nw_info, u8 rssi_index = 0; struct network_info *shadow_nw_info; - if (last_scanned_cnt >= MAX_NUM_SCANNED_NETWORKS_SHADOW) + if (priv->scanned_cnt >= MAX_NUM_SCANNED_NETWORKS_SHADOW) return; if (ap_found == -1) { - ap_index = last_scanned_cnt; - last_scanned_cnt++; + ap_index = priv->scanned_cnt; + priv->scanned_cnt++; } else { ap_index = ap_found; } - shadow_nw_info = &last_scanned_shadow[ap_index]; + shadow_nw_info = &priv->scanned_shadow[ap_index]; rssi_index = shadow_nw_info->rssi_history.index; shadow_nw_info->rssi_history.samples[rssi_index++] = nw_info->rssi; if (rssi_index == NUM_RSSI) { @@ -402,7 +397,7 @@ static void cfg_scan_result(enum scan_event scan_event, u32 i; for (i = 0; i < priv->rcvd_ch_cnt; i++) { - if (memcmp(last_scanned_shadow[i].bssid, + if (memcmp(priv->scanned_shadow[i].bssid, network_info->bssid, 6) == 0) break; } @@ -410,8 +405,8 @@ static void cfg_scan_result(enum scan_event scan_event, if (i >= priv->rcvd_ch_cnt) return; - last_scanned_shadow[i].rssi = network_info->rssi; - last_scanned_shadow[i].time_scan = jiffies; + priv->scanned_shadow[i].rssi = network_info->rssi; + priv->scanned_shadow[i].time_scan = jiffies; } } else if (scan_event == SCAN_EVENT_DONE) { refresh_scan(priv, false); @@ -437,7 +432,7 @@ static void cfg_scan_result(enum scan_event scan_event, .aborted = false, }; - update_scan_time(); + update_scan_time(priv); refresh_scan(priv, false); cfg80211_scan_done(priv->scan_req, &info); @@ -448,11 +443,11 @@ static void cfg_scan_result(enum scan_event scan_event, } } -static inline bool wilc_wfi_cfg_scan_time_expired(int i) +static inline bool wilc_cfg_scan_time_expired(struct wilc_priv *priv, int i) { unsigned long now = jiffies; - if (time_after(now, last_scanned_shadow[i].time_scan_cached + + if (time_after(now, priv->scanned_shadow[i].time_scan_cached + (unsigned long)(nl80211_SCAN_RESULT_EXPIRE - (1 * HZ)))) return true; else @@ -501,11 +496,11 @@ static void cfg_connect_result(enum conn_event conn_disconn_evt, memcpy(priv->associated_bss, conn_info->bssid, ETH_ALEN); - for (i = 0; i < last_scanned_cnt; i++) { - if (memcmp(last_scanned_shadow[i].bssid, + for (i = 0; i < priv->scanned_cnt; i++) { + if (memcmp(priv->scanned_shadow[i].bssid, conn_info->bssid, ETH_ALEN) == 0) { - if (wilc_wfi_cfg_scan_time_expired(i)) + if (wilc_cfg_scan_time_expired(priv, i)) scan_refresh = true; break; @@ -619,7 +614,7 @@ static int scan(struct wiphy *wiphy, struct cfg80211_scan_request *request) priv->rcvd_ch_cnt = 0; - reset_shadow_found(); + reset_shadow_found(priv); priv->cfg_scanning = true; if (request->n_channels <= MAX_NUM_SCANNED_NETWORKS) { @@ -679,18 +674,18 @@ static int connect(struct wiphy *wiphy, struct net_device *dev, else wfi_drv->p2p_connect = 0; - for (i = 0; i < last_scanned_cnt; i++) { - if (sme->ssid_len == last_scanned_shadow[i].ssid_len && - memcmp(last_scanned_shadow[i].ssid, + for (i = 0; i < priv->scanned_cnt; i++) { + if (sme->ssid_len == priv->scanned_shadow[i].ssid_len && + memcmp(priv->scanned_shadow[i].ssid, sme->ssid, sme->ssid_len) == 0) { if (!sme->bssid) { if (sel_bssi_idx == UINT_MAX || - last_scanned_shadow[i].rssi > - last_scanned_shadow[sel_bssi_idx].rssi) + priv->scanned_shadow[i].rssi > + priv->scanned_shadow[sel_bssi_idx].rssi) sel_bssi_idx = i; } else { - if (memcmp(last_scanned_shadow[i].bssid, + if (memcmp(priv->scanned_shadow[i].bssid, sme->bssid, ETH_ALEN) == 0) { sel_bssi_idx = i; @@ -700,8 +695,8 @@ static int connect(struct wiphy *wiphy, struct net_device *dev, } } - if (sel_bssi_idx < last_scanned_cnt) { - nw_info = &last_scanned_shadow[sel_bssi_idx]; + if (sel_bssi_idx < priv->scanned_cnt) { + nw_info = &priv->scanned_shadow[sel_bssi_idx]; } else { ret = -ENOENT; wilc_connecting = 0; @@ -2194,7 +2189,7 @@ int wilc_deinit_host_int(struct net_device *net) ret = wilc_deinit(vif); del_timer_sync(&priv->aging_timer); - clear_shadow_scan(); + clear_shadow_scan(priv); if (op_ifcs == 0) del_timer_sync(&wilc_during_ip_timer); diff --git a/drivers/staging/wilc1000/wilc_wfi_netdevice.h b/drivers/staging/wilc1000/wilc_wfi_netdevice.h index a76b68cf8680..3767e3181cbf 100644 --- a/drivers/staging/wilc1000/wilc_wfi_netdevice.h +++ b/drivers/staging/wilc1000/wilc_wfi_netdevice.h @@ -95,6 +95,8 @@ struct wilc_priv { struct mutex scan_req_lock; bool p2p_listen_state; struct timer_list aging_timer; + struct network_info scanned_shadow[MAX_NUM_SCANNED_NETWORKS_SHADOW]; + int scanned_cnt; }; struct frame_reg { -- 2.30.2