};
/**
- * enum ieee80211_tx_sync_type - TX sync type
- * @IEEE80211_TX_SYNC_AUTH: sync TX for authentication
- * (and possibly also before direct probe)
- * @IEEE80211_TX_SYNC_ASSOC: sync TX for association
- * @IEEE80211_TX_SYNC_ACTION: sync TX for action frame
- * (not implemented yet)
- */
-enum ieee80211_tx_sync_type {
- IEEE80211_TX_SYNC_AUTH,
- IEEE80211_TX_SYNC_ASSOC,
- IEEE80211_TX_SYNC_ACTION,
-};
-
-/**
* enum ieee80211_frame_release_type - frame release reason
* @IEEE80211_FRAME_RELEASE_PSPOLL: frame released for PS-Poll
* @IEEE80211_FRAME_RELEASE_UAPSD: frame(s) released due to
* of the bss parameters has changed when a call is made. The callback
* can sleep.
*
- * @tx_sync: Called before a frame is sent to an AP/GO. In the GO case, the
- * driver should sync with the GO's powersaving so the device doesn't
- * transmit the frame while the GO is asleep. In the regular AP case
- * it may be used by drivers for devices implementing other restrictions
- * on talking to APs, e.g. due to regulatory enforcement or just HW
- * restrictions.
- * This function is called for every authentication, association and
- * action frame separately since applications might attempt to auth
- * with multiple APs before chosing one to associate to. If it returns
- * an error, the corresponding authentication, association or frame
- * transmission is aborted and reported as having failed. It is always
- * called after tuning to the correct channel.
- * The callback might be called multiple times before @finish_tx_sync
- * (but @finish_tx_sync will be called once for each) but in practice
- * this is unlikely to happen. It can also refuse in that case if the
- * driver cannot handle that situation.
- * This callback can sleep.
- * @finish_tx_sync: Called as a counterpart to @tx_sync, unless that returned
- * an error. This callback can sleep.
- *
* @prepare_multicast: Prepare for multicast filter configuration.
* This callback is optional, and its return value is passed
* to configure_filter(). This callback must be atomic.
struct ieee80211_bss_conf *info,
u32 changed);
- int (*tx_sync)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
- const u8 *bssid, enum ieee80211_tx_sync_type type);
- void (*finish_tx_sync)(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- const u8 *bssid,
- enum ieee80211_tx_sync_type type);
-
u64 (*prepare_multicast)(struct ieee80211_hw *hw,
struct netdev_hw_addr_list *mc_list);
void (*configure_filter)(struct ieee80211_hw *hw,
trace_drv_return_void(local);
}
-static inline int drv_tx_sync(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata,
- const u8 *bssid,
- enum ieee80211_tx_sync_type type)
-{
- int ret = 0;
-
- might_sleep();
-
- check_sdata_in_driver(sdata);
-
- trace_drv_tx_sync(local, sdata, bssid, type);
- if (local->ops->tx_sync)
- ret = local->ops->tx_sync(&local->hw, &sdata->vif,
- bssid, type);
- trace_drv_return_int(local, ret);
- return ret;
-}
-
-static inline void drv_finish_tx_sync(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata,
- const u8 *bssid,
- enum ieee80211_tx_sync_type type)
-{
- might_sleep();
-
- check_sdata_in_driver(sdata);
-
- trace_drv_finish_tx_sync(local, sdata, bssid, type);
- if (local->ops->finish_tx_sync)
- local->ops->finish_tx_sync(&local->hw, &sdata->vif,
- bssid, type);
- trace_drv_return_void(local);
-}
-
static inline u64 drv_prepare_multicast(struct ieee80211_local *local,
struct netdev_hw_addr_list *mc_list)
{
)
);
-DECLARE_EVENT_CLASS(tx_sync_evt,
- TP_PROTO(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata,
- const u8 *bssid,
- enum ieee80211_tx_sync_type type),
- TP_ARGS(local, sdata, bssid, type),
-
- TP_STRUCT__entry(
- LOCAL_ENTRY
- VIF_ENTRY
- __array(char, bssid, ETH_ALEN)
- __field(u32, sync_type)
- ),
-
- TP_fast_assign(
- LOCAL_ASSIGN;
- VIF_ASSIGN;
- memcpy(__entry->bssid, bssid, ETH_ALEN);
- __entry->sync_type = type;
- ),
-
- TP_printk(
- LOCAL_PR_FMT VIF_PR_FMT " bssid:%pM type:%d",
- LOCAL_PR_ARG, VIF_PR_ARG, __entry->bssid, __entry->sync_type
- )
-);
-
-DEFINE_EVENT(tx_sync_evt, drv_tx_sync,
- TP_PROTO(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata,
- const u8 *bssid,
- enum ieee80211_tx_sync_type type),
- TP_ARGS(local, sdata, bssid, type)
-);
-
-DEFINE_EVENT(tx_sync_evt, drv_finish_tx_sync,
- TP_PROTO(struct ieee80211_local *local,
- struct ieee80211_sub_if_data *sdata,
- const u8 *bssid,
- enum ieee80211_tx_sync_type type),
- TP_ARGS(local, sdata, bssid, type)
-);
-
TRACE_EVENT(drv_prepare_multicast,
TP_PROTO(struct ieee80211_local *local, int mc_count),
u8 key[WLAN_KEY_LEN_WEP104];
u8 key_len, key_idx;
- bool synced;
bool done;
size_t ie_len;
lockdep_assert_held(&sdata->u.mgd.mtx);
- if (auth_data->synced)
- drv_finish_tx_sync(sdata->local, sdata,
- auth_data->bss->bssid,
- IEEE80211_TX_SYNC_AUTH);
-
if (!assoc) {
sta_info_destroy_addr(sdata, auth_data->bss->bssid);
printk(KERN_DEBUG "%s: authenticated\n", sdata->name);
out:
- if (ifmgd->auth_data->synced)
- drv_finish_tx_sync(sdata->local, sdata, bssid,
- IEEE80211_TX_SYNC_AUTH);
- ifmgd->auth_data->synced = false;
ifmgd->auth_data->done = true;
ifmgd->auth_data->timeout = jiffies + IEEE80211_AUTH_WAIT_ASSOC;
run_again(ifmgd, ifmgd->auth_data->timeout);
lockdep_assert_held(&sdata->u.mgd.mtx);
- if (assoc_data->synced)
- drv_finish_tx_sync(sdata->local, sdata,
- assoc_data->bss->bssid,
- IEEE80211_TX_SYNC_ASSOC);
-
if (!assoc) {
sta_info_destroy_addr(sdata, assoc_data->bss->bssid);
} else {
printk(KERN_DEBUG "%s: associated\n", sdata->name);
- /* tell driver about sync done first */
- if (assoc_data->synced) {
- drv_finish_tx_sync(sdata->local, sdata,
- assoc_data->bss->bssid,
- IEEE80211_TX_SYNC_ASSOC);
- assoc_data->synced = false;
- }
-
if (!ieee80211_assoc_success(sdata, *bss, mgmt, len)) {
/* oops -- internal error -- send timeout for now */
ieee80211_destroy_assoc_data(sdata, true);
if (WARN_ON_ONCE(!auth_data))
return -EINVAL;
- if (!auth_data->synced) {
- int ret = drv_tx_sync(local, sdata, auth_data->bss->bssid,
- IEEE80211_TX_SYNC_AUTH);
- if (ret)
- return ret;
- }
- auth_data->synced = true;
-
auth_data->tries++;
if (auth_data->tries > IEEE80211_AUTH_MAX_TRIES) {
lockdep_assert_held(&sdata->u.mgd.mtx);
- if (!assoc_data->synced) {
- int ret = drv_tx_sync(local, sdata, assoc_data->bss->bssid,
- IEEE80211_TX_SYNC_ASSOC);
- if (ret)
- return ret;
- }
- assoc_data->synced = true;
-
assoc_data->tries++;
if (assoc_data->tries > IEEE80211_ASSOC_MAX_TRIES) {
printk(KERN_DEBUG "%s: association with %pM timed out\n",
err = ieee80211_probe_auth(sdata);
if (err) {
- if (auth_data->synced)
- drv_finish_tx_sync(local, sdata, req->bss->bssid,
- IEEE80211_TX_SYNC_AUTH);
sta_info_destroy_addr(sdata, req->bss->bssid);
goto err_clear;
}
projects / platform / kernel / linux-exynos.git / commitdiff