From a69cc44fe9ebb806c5f3f8bd83fb4a50ca63647b Mon Sep 17 00:00:00 2001 From: Chun-Yeow Yeoh Date: Thu, 14 Jun 2012 02:06:07 +0800 Subject: mac80211: implement the proactive PREQ generation Generate the proactive PREQ element as defined in Sec. 13.10.9.3 (Case C) of IEEE Std. 802.11-2012 based on the selection of dot11MeshHWMPRootMode as follow: dot11MeshHWMPRootMode (2) is proactivePREQnoPREP dot11MeshHWMPRootMode (3) is proactivePREQwithPREP The proactive PREQ is generated based on the interval defined by dot11MeshHWMProotInterval. With this change, proactive RANN element is now generated if the dot11MeshHWMPRootMode is set to (4) instead of (1). Signed-off-by: Chun-Yeow Yeoh [line-break commit log] Signed-off-by: Johannes Berg --- net/mac80211/mesh_hwmp.c | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) (limited to 'net/mac80211/mesh_hwmp.c') diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c index 9b6da2de660d..a6b08f5c4612 100644 --- a/net/mac80211/mesh_hwmp.c +++ b/net/mac80211/mesh_hwmp.c @@ -1154,13 +1154,34 @@ mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; u32 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval; - u8 flags; + u8 flags, target_flags = 0; flags = (ifmsh->mshcfg.dot11MeshGateAnnouncementProtocol) ? RANN_FLAG_IS_GATE : 0; - mesh_path_sel_frame_tx(MPATH_RANN, flags, sdata->vif.addr, + + switch (ifmsh->mshcfg.dot11MeshHWMPRootMode) { + case IEEE80211_PROACTIVE_RANN: + mesh_path_sel_frame_tx(MPATH_RANN, flags, sdata->vif.addr, cpu_to_le32(++ifmsh->sn), 0, NULL, 0, broadcast_addr, - 0, sdata->u.mesh.mshcfg.element_ttl, + 0, ifmsh->mshcfg.element_ttl, cpu_to_le32(interval), 0, 0, sdata); + break; + case IEEE80211_PROACTIVE_PREQ_WITH_PREP: + flags |= IEEE80211_PREQ_PROACTIVE_PREP_FLAG; + case IEEE80211_PROACTIVE_PREQ_NO_PREP: + interval = ifmsh->mshcfg.dot11MeshHWMPactivePathToRootTimeout; + target_flags |= IEEE80211_PREQ_TO_FLAG | + IEEE80211_PREQ_USN_FLAG; + mesh_path_sel_frame_tx(MPATH_PREQ, flags, sdata->vif.addr, + cpu_to_le32(++ifmsh->sn), target_flags, + (u8 *) broadcast_addr, 0, broadcast_addr, + 0, ifmsh->mshcfg.element_ttl, + cpu_to_le32(interval), + 0, cpu_to_le32(ifmsh->preq_id++), sdata); + break; + default: + mhwmp_dbg("Proactive mechanism not supported"); + return; + } } -- cgit v1.2.3