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mac80211: add offset_tsf driver op and use it for mesh

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This allows the mesh sync (and debugfs) code to make incremental
TSF adjustments, avoiding any uncertainty introduced by delay in
programming absolute TSF.

Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Pedersen, Thomas 2016-09-28 16:56:28 -07:00 • committed by Johannes Berg
parent 3ff23cd565
commit 354d381baf
6 changed files with 68 additions and 6 deletions
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10
net/mac80211/mesh_sync.c
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@ -70,9 +70,13 @@ void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata)
}
spin_unlock_bh(&ifmsh->sync_offset_lock);
tsf = drv_get_tsf(local, sdata);
if (tsf != -1ULL)
drv_set_tsf(local, sdata, tsf + tsfdelta);
if (local->ops->offset_tsf) {
drv_offset_tsf(local, sdata, tsfdelta);
} else {
tsf = drv_get_tsf(local, sdata);
if (tsf != -1ULL)
drv_set_tsf(local, sdata, tsf + tsfdelta);
}
}
static void mesh_sync_offset_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,