static bool mesh_peer_tbtt_adjusting(struct ieee802_11_elems *ie)
{
return (ie->mesh_config->meshconf_cap &
- MESHCONF_CAPAB_TBTT_ADJUSTING) != 0;
+ IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING) != 0;
}
void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata)
goto no_sync;
}
- if (rx_status->flag & RX_FLAG_MACTIME_MPDU && rx_status->mactime) {
- /*
- * The mactime is defined as the time the first data symbol
- * of the frame hits the PHY, and the timestamp of the beacon
- * is defined as "the time that the data symbol containing the
- * first bit of the timestamp is transmitted to the PHY plus
- * the transmitting STA's delays through its local PHY from the
- * MAC-PHY interface to its interface with the WM" (802.11
- * 11.1.2)
- *
- * T_r, in 13.13.2.2.2, is just defined as "the frame reception
- * time" but we unless we interpret that time to be the same
- * time of the beacon timestamp, the offset calculation will be
- * off. Below we adjust t_r to be "the time at which the first
- * symbol of the timestamp element in the beacon is received".
- * This correction depends on the rate.
- *
- * Based on similar code in ibss.c
- */
- int rate;
-
- if (rx_status->flag & RX_FLAG_HT) {
- /* TODO:
- * In principle there could be HT-beacons (Dual Beacon
- * HT Operation options), but for now ignore them and
- * just use the primary (i.e. non-HT) beacons for
- * synchronization.
- * */
- goto no_sync;
- } else
- rate = local->hw.wiphy->bands[rx_status->band]->
- bitrates[rx_status->rate_idx].bitrate;
-
- /* 24 bytes of header * 8 bits/byte *
- * 10*(100 Kbps)/Mbps / rate (100 Kbps)*/
- t_r = rx_status->mactime + (24 * 8 * 10 / rate);
- }
+ if (ieee80211_have_rx_timestamp(rx_status))
+ /* time when timestamp field was received */
+ t_r = ieee80211_calculate_rx_timestamp(local, rx_status,
+ 24 + 12 +
+ elems->total_len +
+ FCS_LEN,
+ 24);
/* Timing offset calculation (see 13.13.2.2.2) */
t_t = le64_to_cpu(mgmt->u.beacon.timestamp);
ifmsh->sync_offset_clockdrift_max);
set_bit(MESH_WORK_DRIFT_ADJUST,
&ifmsh->wrkq_flags);
+
+ ifmsh->adjusting_tbtt = true;
} else {
msync_dbg(sdata,
"TBTT : max clockdrift=%lld; too small to adjust\n",
(long long)ifmsh->sync_offset_clockdrift_max);
ifmsh->sync_offset_clockdrift_max = 0;
+
+ ifmsh->adjusting_tbtt = false;
}
spin_unlock_bh(&ifmsh->sync_offset_lock);
}
-static const u8 *mesh_get_vendor_oui(struct ieee80211_sub_if_data *sdata)
-{
- struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
- u8 offset;
-
- if (!ifmsh->ie || !ifmsh->ie_len)
- return NULL;
-
- offset = ieee80211_ie_split_vendor(ifmsh->ie,
- ifmsh->ie_len, 0);
-
- if (!offset)
- return NULL;
-
- return ifmsh->ie + offset + 2;
-}
-
-static void mesh_sync_vendor_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
- u16 stype,
- struct ieee80211_mgmt *mgmt,
- struct ieee802_11_elems *elems,
- struct ieee80211_rx_status *rx_status)
-{
- const u8 *oui;
-
- WARN_ON(sdata->u.mesh.mesh_sp_id != IEEE80211_SYNC_METHOD_VENDOR);
- msync_dbg(sdata, "called mesh_sync_vendor_rx_bcn_presp\n");
- oui = mesh_get_vendor_oui(sdata);
- /* here you would implement the vendor offset tracking for this oui */
-}
-
-static void mesh_sync_vendor_adjust_tbtt(struct ieee80211_sub_if_data *sdata)
-{
- const u8 *oui;
-
- WARN_ON(sdata->u.mesh.mesh_sp_id != IEEE80211_SYNC_METHOD_VENDOR);
- msync_dbg(sdata, "called mesh_sync_vendor_adjust_tbtt\n");
- oui = mesh_get_vendor_oui(sdata);
- /* here you would implement the vendor tsf adjustment for this oui */
-}
-
-/* global variable */
-static struct sync_method sync_methods[] = {
+static const struct sync_method sync_methods[] = {
{
.method = IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET,
.ops = {
.adjust_tbtt = &mesh_sync_offset_adjust_tbtt,
}
},
- {
- .method = IEEE80211_SYNC_METHOD_VENDOR,
- .ops = {
- .rx_bcn_presp = &mesh_sync_vendor_rx_bcn_presp,
- .adjust_tbtt = &mesh_sync_vendor_adjust_tbtt,
- }
- },
};
-struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method)
+const struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method)
{
- struct ieee80211_mesh_sync_ops *ops = NULL;
+ const struct ieee80211_mesh_sync_ops *ops = NULL;
u8 i;
for (i = 0 ; i < ARRAY_SIZE(sync_methods); ++i) {
projects / platform / kernel / linux-rpi.git / blobdiff