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mac80211: IBSS join rework

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I hold back this patch for around a week to avoid
confusion. This is the second step of
"mac80211: Fixed BSSID handling revisited".

With it, in the situation of a strange merge to the
same BSSID (e.g. caused by a TSF overflow) only
reset_tsf() is called.

And sta_info_flush_delayed() is only called if you
change the network manually, not on an automatic
BSSID merge.

Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Alina Friedrichsen 2009-01-29 13:56:20 +01:00 committed by John W. Linville
parent f2bffa7ea0
commit c4e3a58448
1 changed files with 14 additions and 7 deletions
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21
net/mac80211/mlme.c
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@ -1503,13 +1503,22 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss *bss)
{
struct ieee80211_local *local = sdata->local;
int res, rates, i, j;
int res = 0, rates, i, j;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
u8 *pos;
struct ieee80211_supported_band *sband;
union iwreq_data wrqu;
if (local->ops->reset_tsf) {
/* Reset own TSF to allow time synchronization work. */
local->ops->reset_tsf(local_to_hw(local));
}
if ((ifsta->flags & IEEE80211_STA_PREV_BSSID_SET) &&
memcmp(ifsta->bssid, bss->bssid, ETH_ALEN) == 0)
return res;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 +
sdata->u.sta.ie_proberesp_len);
if (!skb) {
@ -1520,13 +1529,11 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
/* Remove possible STA entries from other IBSS networks. */
sta_info_flush_delayed(sdata);
if (local->ops->reset_tsf) {
/* Reset own TSF to allow time synchronization work. */
local->ops->reset_tsf(local_to_hw(local));
if (!(ifsta->flags & IEEE80211_STA_PREV_BSSID_SET)) {
/* Remove possible STA entries from other IBSS networks. */
sta_info_flush_delayed(sdata);
}
memcpy(ifsta->bssid, bss->bssid, ETH_ALEN);
res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
if (res)