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mac80211: 802.11p OCB mode support

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This patch adds 802.11p OCB (Outside the Context of a BSS) mode
support.

When communicating in OCB mode a mandatory wildcard BSSID
(48 '1' bits) is used.

The EDCA parameters handling function was changed to support
802.11p specific values.

The insertion of a newly discovered STAs is done in the similar way
as in the IBSS mode -- through the deferred insertion.

The OCB mode uses a periodic 'housekeeping task' for expiration of
disconnected STAs (in the similar manner as in the MESH mode).

New Kconfig option for verbose OCB debugging outputs is added.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Rostislav Lisovy
2014-11-03 10:33:19 +01:00
committed by Johannes Berg
parent 6e0bd6c35b
commit 239281f803
14 changed files with 417 additions and 9 deletions
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30
net/mac80211/util.c
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@@ -1101,6 +1101,7 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
struct ieee80211_chanctx_conf *chanctx_conf;
int ac;
bool use_11b, enable_qos;
bool is_ocb; /* Use another EDCA parameters if dot11OCBActivated=true */
int aCWmin, aCWmax;
if (!local->ops->conf_tx)
@@ -1125,6 +1126,8 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
*/
enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION);
is_ocb = (sdata->vif.type == NL80211_IFTYPE_OCB);
/* Set defaults according to 802.11-2007 Table 7-37 */
aCWmax = 1023;
if (use_11b)
@@ -1146,7 +1149,10 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
qparam.cw_max = aCWmax;
qparam.cw_min = aCWmin;
qparam.txop = 0;
qparam.aifs = 7;
if (is_ocb)
qparam.aifs = 9;
else
qparam.aifs = 7;
break;
/* never happens but let's not leave undefined */
default:
@@ -1154,21 +1160,32 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
qparam.cw_max = aCWmax;
qparam.cw_min = aCWmin;
qparam.txop = 0;
qparam.aifs = 3;
if (is_ocb)
qparam.aifs = 6;
else
qparam.aifs = 3;
break;
case IEEE80211_AC_VI:
qparam.cw_max = aCWmin;
qparam.cw_min = (aCWmin + 1) / 2 - 1;
if (use_11b)
if (is_ocb)
qparam.txop = 0;
else if (use_11b)
qparam.txop = 6016/32;
else
qparam.txop = 3008/32;
qparam.aifs = 2;
if (is_ocb)
qparam.aifs = 3;
else
qparam.aifs = 2;
break;
case IEEE80211_AC_VO:
qparam.cw_max = (aCWmin + 1) / 2 - 1;
qparam.cw_min = (aCWmin + 1) / 4 - 1;
if (use_11b)
if (is_ocb)
qparam.txop = 0;
else if (use_11b)
qparam.txop = 3264/32;
else
qparam.txop = 1504/32;
@@ -1842,7 +1859,8 @@ int ieee80211_reconfig(struct ieee80211_local *local)
sdata_unlock(sdata);
break;
case NL80211_IFTYPE_OCB:
/* to be implemented in the future */
changed |= BSS_CHANGED_OCB;
ieee80211_bss_info_change_notify(sdata, changed);
break;
case NL80211_IFTYPE_ADHOC:
changed |= BSS_CHANGED_IBSS;