diff options
| -rw-r--r-- | net/mac80211/mesh_plink.c | 298 |
1 files changed, 155 insertions, 143 deletions
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index fa86d354f622..4311d4571ec8 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -691,21 +691,172 @@ static u32 mesh_plink_establish(struct ieee80211_sub_if_data *sdata, return changed; } +/** + * mesh_plink_fsm - step @sta MPM based on @event + * + * @sdata: interface + * @sta: mesh neighbor + * @event: peering event + * + * Return: changed MBSS flags + */ +static u32 mesh_plink_fsm(struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, enum plink_event event) +{ + struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg; + enum ieee80211_self_protected_actioncode action = 0; + u32 changed = 0; + + mpl_dbg(sdata, "peer %pM in state %s got event %s\n", sta->sta.addr, + mplstates[sta->plink_state], mplevents[event]); + + spin_lock_bh(&sta->lock); + switch (sta->plink_state) { + case NL80211_PLINK_LISTEN: + switch (event) { + case CLS_ACPT: + mesh_plink_fsm_restart(sta); + break; + case OPN_ACPT: + sta->plink_state = NL80211_PLINK_OPN_RCVD; + get_random_bytes(&sta->llid, 2); + mesh_plink_timer_set(sta, + mshcfg->dot11MeshRetryTimeout); + + /* set the non-peer mode to active during peering */ + changed |= ieee80211_mps_local_status_update(sdata); + action = WLAN_SP_MESH_PEERING_OPEN; + break; + default: + break; + } + break; + case NL80211_PLINK_OPN_SNT: + switch (event) { + case OPN_RJCT: + case CNF_RJCT: + case CLS_ACPT: + mesh_plink_close(sdata, sta, event); + action = WLAN_SP_MESH_PEERING_CLOSE; + break; + case OPN_ACPT: + /* retry timer is left untouched */ + sta->plink_state = NL80211_PLINK_OPN_RCVD; + action = WLAN_SP_MESH_PEERING_CONFIRM; + break; + case CNF_ACPT: + sta->plink_state = NL80211_PLINK_CNF_RCVD; + if (!mod_plink_timer(sta, + mshcfg->dot11MeshConfirmTimeout)) + sta->ignore_plink_timer = true; + break; + default: + break; + } + break; + case NL80211_PLINK_OPN_RCVD: + switch (event) { + case OPN_RJCT: + case CNF_RJCT: + case CLS_ACPT: + mesh_plink_close(sdata, sta, event); + action = WLAN_SP_MESH_PEERING_CLOSE; + break; + case OPN_ACPT: + action = WLAN_SP_MESH_PEERING_CONFIRM; + break; + case CNF_ACPT: + changed |= mesh_plink_establish(sdata, sta); + break; + default: + break; + } + break; + case NL80211_PLINK_CNF_RCVD: + switch (event) { + case OPN_RJCT: + case CNF_RJCT: + case CLS_ACPT: + mesh_plink_close(sdata, sta, event); + action = WLAN_SP_MESH_PEERING_CLOSE; + break; + case OPN_ACPT: + changed |= mesh_plink_establish(sdata, sta); + action = WLAN_SP_MESH_PEERING_CONFIRM; + break; + default: + break; + } + break; + case NL80211_PLINK_ESTAB: + switch (event) { + case CLS_ACPT: + changed |= __mesh_plink_deactivate(sta); + changed |= mesh_set_ht_prot_mode(sdata); + changed |= mesh_set_short_slot_time(sdata); + mesh_plink_close(sdata, sta, event); + action = WLAN_SP_MESH_PEERING_CLOSE; + break; + case OPN_ACPT: + action = WLAN_SP_MESH_PEERING_CONFIRM; + break; + default: + break; + } + break; + case NL80211_PLINK_HOLDING: + switch (event) { + case CLS_ACPT: + if (del_timer(&sta->plink_timer)) + sta->ignore_plink_timer = 1; + mesh_plink_fsm_restart(sta); + break; + case OPN_ACPT: + case CNF_ACPT: + case OPN_RJCT: + case CNF_RJCT: + action = WLAN_SP_MESH_PEERING_CLOSE; + break; + default: + break; + } + break; + default: + /* should not get here, PLINK_BLOCKED is dealt with at the + * beginning of the function + */ + break; + } + spin_unlock_bh(&sta->lock); + if (action) { + mesh_plink_frame_tx(sdata, action, sta->sta.addr, + sta->llid, sta->plid, sta->reason); + + /* also send confirm in open case */ + if (action == WLAN_SP_MESH_PEERING_OPEN) { + mesh_plink_frame_tx(sdata, + WLAN_SP_MESH_PEERING_CONFIRM, + sta->sta.addr, sta->llid, + sta->plid, 0); + } + } + + return changed; +} + static void mesh_process_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, struct ieee802_11_elems *elems) { - struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg; - enum ieee80211_self_protected_actioncode action = 0; struct sta_info *sta; enum plink_event event; enum ieee80211_self_protected_actioncode ftype; bool matches_local; u32 changed = 0; u8 ie_len; - __le16 plid, llid; + __le16 plid, llid = 0; if (!elems->peering) { mpl_dbg(sdata, @@ -847,146 +998,7 @@ mesh_process_plink_frame(struct ieee80211_sub_if_data *sdata, sta->plid = plid; } - mpl_dbg(sdata, "peer %pM in state %s got event %s\n", mgmt->sa, - mplstates[sta->plink_state], mplevents[event]); - spin_lock_bh(&sta->lock); - switch (sta->plink_state) { - case NL80211_PLINK_LISTEN: - switch (event) { - case CLS_ACPT: - mesh_plink_fsm_restart(sta); - break; - case OPN_ACPT: - sta->plink_state = NL80211_PLINK_OPN_RCVD; - get_random_bytes(&llid, 2); - sta->llid = llid; - mesh_plink_timer_set(sta, - mshcfg->dot11MeshRetryTimeout); - - /* set the non-peer mode to active during peering */ - changed |= ieee80211_mps_local_status_update(sdata); - - action = WLAN_SP_MESH_PEERING_OPEN; - break; - default: - break; - } - break; - - case NL80211_PLINK_OPN_SNT: - switch (event) { - case OPN_RJCT: - case CNF_RJCT: - case CLS_ACPT: - mesh_plink_close(sdata, sta, event); - action = WLAN_SP_MESH_PEERING_CLOSE; - break; - - case OPN_ACPT: - /* retry timer is left untouched */ - sta->plink_state = NL80211_PLINK_OPN_RCVD; - action = WLAN_SP_MESH_PEERING_CONFIRM; - break; - case CNF_ACPT: - sta->plink_state = NL80211_PLINK_CNF_RCVD; - if (!mod_plink_timer(sta, - mshcfg->dot11MeshConfirmTimeout)) - sta->ignore_plink_timer = true; - - break; - default: - break; - } - break; - - case NL80211_PLINK_OPN_RCVD: - switch (event) { - case OPN_RJCT: - case CNF_RJCT: - case CLS_ACPT: - mesh_plink_close(sdata, sta, event); - action = WLAN_SP_MESH_PEERING_CLOSE; - break; - case OPN_ACPT: - action = WLAN_SP_MESH_PEERING_CONFIRM; - break; - case CNF_ACPT: - changed |= mesh_plink_establish(sdata, sta); - break; - default: - break; - } - break; - - case NL80211_PLINK_CNF_RCVD: - switch (event) { - case OPN_RJCT: - case CNF_RJCT: - case CLS_ACPT: - mesh_plink_close(sdata, sta, event); - action = WLAN_SP_MESH_PEERING_CLOSE; - break; - case OPN_ACPT: - changed |= mesh_plink_establish(sdata, sta); - action = WLAN_SP_MESH_PEERING_CONFIRM; - break; - default: - break; - } - break; - - case NL80211_PLINK_ESTAB: - switch (event) { - case CLS_ACPT: - changed |= __mesh_plink_deactivate(sta); - changed |= mesh_set_ht_prot_mode(sdata); - changed |= mesh_set_short_slot_time(sdata); - mesh_plink_close(sdata, sta, event); - action = WLAN_SP_MESH_PEERING_CLOSE; - break; - case OPN_ACPT: - action = WLAN_SP_MESH_PEERING_CONFIRM; - break; - default: - break; - } - break; - case NL80211_PLINK_HOLDING: - switch (event) { - case CLS_ACPT: - if (del_timer(&sta->plink_timer)) - sta->ignore_plink_timer = 1; - mesh_plink_fsm_restart(sta); - break; - case OPN_ACPT: - case CNF_ACPT: - case OPN_RJCT: - case CNF_RJCT: - action = WLAN_SP_MESH_PEERING_CLOSE; - break; - default: - break; - } - break; - default: - /* should not get here, PLINK_BLOCKED is dealt with at the - * beginning of the function - */ - break; - } - spin_unlock_bh(&sta->lock); - if (action) { - mesh_plink_frame_tx(sdata, action, sta->sta.addr, - sta->llid, sta->plid, sta->reason); - - /* also send confirm in open case */ - if (action == WLAN_SP_MESH_PEERING_OPEN) { - mesh_plink_frame_tx(sdata, - WLAN_SP_MESH_PEERING_CONFIRM, - sta->sta.addr, sta->llid, - sta->plid, 0); - } - } + changed |= mesh_plink_fsm(sdata, sta, event); unlock_rcu: rcu_read_unlock(); |
