27 static inline bool mpath_expired(struct mesh_path *mpath)  in mpath_expired()  argument
29 	return (mpath->flags & MESH_PATH_ACTIVE) &&  in mpath_expired()
30 	       time_after(jiffies, mpath->exp_time) &&  in mpath_expired()
31 	       !(mpath->flags & MESH_PATH_FIXED);  in mpath_expired()
40 	struct mesh_path *mpath;  member
206 void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta)  in mesh_path_assign_nexthop()  argument
212 	rcu_assign_pointer(mpath->next_hop, sta);  in mesh_path_assign_nexthop()
214 	spin_lock_irqsave(&mpath->frame_queue.lock, flags);  in mesh_path_assign_nexthop()
215 	skb_queue_walk(&mpath->frame_queue, skb) {  in mesh_path_assign_nexthop()
218 		memcpy(hdr->addr2, mpath->sdata->vif.addr, ETH_ALEN);  in mesh_path_assign_nexthop()
222 	spin_unlock_irqrestore(&mpath->frame_queue.lock, flags);  in mesh_path_assign_nexthop()
338 	struct mesh_path *mpath;  in mpath_lookup()  local
344 		mpath = node->mpath;  in mpath_lookup()
345 		if (mpath->sdata == sdata &&  in mpath_lookup()
346 		    ether_addr_equal(dst, mpath->dst)) {  in mpath_lookup()
347 			if (mpath_expired(mpath)) {  in mpath_lookup()
348 				spin_lock_bh(&mpath->state_lock);  in mpath_lookup()
349 				mpath->flags &= ~MESH_PATH_ACTIVE;  in mpath_lookup()
350 				spin_unlock_bh(&mpath->state_lock);  in mpath_lookup()
352 			return mpath;  in mpath_lookup()
398 		if (sdata && node->mpath->sdata != sdata)  in mesh_path_lookup_by_idx()
401 			if (mpath_expired(node->mpath)) {  in mesh_path_lookup_by_idx()
402 				spin_lock_bh(&node->mpath->state_lock);  in mesh_path_lookup_by_idx()
403 				node->mpath->flags &= ~MESH_PATH_ACTIVE;  in mesh_path_lookup_by_idx()
404 				spin_unlock_bh(&node->mpath->state_lock);  in mesh_path_lookup_by_idx()
406 			return node->mpath;  in mesh_path_lookup_by_idx()
431 		if (sdata && node->mpath->sdata != sdata)  in mpp_path_lookup_by_idx()
434 			return node->mpath;  in mpp_path_lookup_by_idx()
444 int mesh_path_add_gate(struct mesh_path *mpath)  in mesh_path_add_gate()  argument
454 		if (gate->mpath == mpath) {  in mesh_path_add_gate()
465 	mpath->is_gate = true;  in mesh_path_add_gate()
466 	mpath->sdata->u.mesh.num_gates++;  in mesh_path_add_gate()
467 	new_gate->mpath = mpath;  in mesh_path_add_gate()
471 	mpath_dbg(mpath->sdata,  in mesh_path_add_gate()
473 		  mpath->dst, mpath->sdata->u.mesh.num_gates);  in mesh_path_add_gate()
487 static void mesh_gate_del(struct mesh_table *tbl, struct mesh_path *mpath)  in mesh_gate_del()  argument
493 		if (gate->mpath != mpath)  in mesh_gate_del()
499 		mpath->sdata->u.mesh.num_gates--;  in mesh_gate_del()
500 		mpath->is_gate = false;  in mesh_gate_del()
501 		mpath_dbg(mpath->sdata,  in mesh_gate_del()
503 			  mpath->dst, mpath->sdata->u.mesh.num_gates);  in mesh_gate_del()
532 	struct mesh_path *mpath, *new_mpath;  in mesh_path_add()  local
558 		mpath = node->mpath;  in mesh_path_add()
559 		if (mpath->sdata == sdata &&  in mesh_path_add()
560 		    ether_addr_equal(dst, mpath->dst))  in mesh_path_add()
579 	new_node->mpath = new_mpath;  in mesh_path_add()
597 	mpath = new_mpath;  in mesh_path_add()
601 	return mpath;  in mesh_path_add()
666 	struct mesh_path *mpath, *new_mpath;  in mpp_path_add()  local
695 	new_node->mpath = new_mpath;  in mpp_path_add()
709 		mpath = node->mpath;  in mpp_path_add()
710 		if (mpath->sdata == sdata &&  in mpp_path_add()
711 		    ether_addr_equal(dst, mpath->dst))  in mpp_path_add()
754 	struct mesh_path *mpath;  in mesh_plink_broken()  local
762 		mpath = node->mpath;  in mesh_plink_broken()
763 		if (rcu_access_pointer(mpath->next_hop) == sta &&  in mesh_plink_broken()
764 		    mpath->flags & MESH_PATH_ACTIVE &&  in mesh_plink_broken()
765 		    !(mpath->flags & MESH_PATH_FIXED)) {  in mesh_plink_broken()
766 			spin_lock_bh(&mpath->state_lock);  in mesh_plink_broken()
767 			mpath->flags &= ~MESH_PATH_ACTIVE;  in mesh_plink_broken()
768 			++mpath->sn;  in mesh_plink_broken()
769 			spin_unlock_bh(&mpath->state_lock);  in mesh_plink_broken()
772 				mpath->dst, mpath->sn,  in mesh_plink_broken()
782 	struct ieee80211_sub_if_data *sdata = node->mpath->sdata;  in mesh_path_node_reclaim()
784 	del_timer_sync(&node->mpath->timer);  in mesh_path_node_reclaim()
786 	kfree(node->mpath);  in mesh_path_node_reclaim()
793 	struct mesh_path *mpath;  in __mesh_path_del()  local
794 	mpath = node->mpath;  in __mesh_path_del()
795 	spin_lock(&mpath->state_lock);  in __mesh_path_del()
796 	mpath->flags |= MESH_PATH_RESOLVING;  in __mesh_path_del()
797 	if (mpath->is_gate)  in __mesh_path_del()
798 		mesh_gate_del(tbl, mpath);  in __mesh_path_del()
801 	spin_unlock(&mpath->state_lock);  in __mesh_path_del()
819 	struct mesh_path *mpath;  in mesh_path_flush_by_nexthop()  local
827 		mpath = node->mpath;  in mesh_path_flush_by_nexthop()
828 		if (rcu_access_pointer(mpath->next_hop) == sta) {  in mesh_path_flush_by_nexthop()
841 	struct mesh_path *mpath;  in table_flush_by_iface()  local
847 		mpath = node->mpath;  in table_flush_by_iface()
848 		if (mpath->sdata != sdata)  in table_flush_by_iface()
889 	struct mesh_path *mpath;  in mesh_path_del()  local
902 		mpath = node->mpath;  in mesh_path_del()
903 		if (mpath->sdata == sdata &&  in mesh_path_del()
904 		    ether_addr_equal(addr, mpath->dst)) {  in mesh_path_del()
926 void mesh_path_tx_pending(struct mesh_path *mpath)  in mesh_path_tx_pending()  argument
928 	if (mpath->flags & MESH_PATH_ACTIVE)  in mesh_path_tx_pending()
929 		ieee80211_add_pending_skbs(mpath->sdata->local,  in mesh_path_tx_pending()
930 				&mpath->frame_queue);  in mesh_path_tx_pending()
943 int mesh_path_send_to_gates(struct mesh_path *mpath)  in mesh_path_send_to_gates()  argument
945 	struct ieee80211_sub_if_data *sdata = mpath->sdata;  in mesh_path_send_to_gates()
947 	struct mesh_path *from_mpath = mpath;  in mesh_path_send_to_gates()
961 		if (gate->mpath->sdata != sdata)  in mesh_path_send_to_gates()
964 		if (gate->mpath->flags & MESH_PATH_ACTIVE) {  in mesh_path_send_to_gates()
965 			mpath_dbg(sdata, "Forwarding to %pM\n", gate->mpath->dst);  in mesh_path_send_to_gates()
966 			mesh_path_move_to_queue(gate->mpath, from_mpath, copy);  in mesh_path_send_to_gates()
967 			from_mpath = gate->mpath;  in mesh_path_send_to_gates()
972 				  gate->mpath, gate->mpath->flags);  in mesh_path_send_to_gates()
977 		if (gate->mpath->sdata == sdata) {  in mesh_path_send_to_gates()
978 			mpath_dbg(sdata, "Sending to %pM\n", gate->mpath->dst);  in mesh_path_send_to_gates()
979 			mesh_path_tx_pending(gate->mpath);  in mesh_path_send_to_gates()
982 	return (from_mpath == mpath) ? -EHOSTUNREACH : 0;  in mesh_path_send_to_gates()
1007 void mesh_path_flush_pending(struct mesh_path *mpath)  in mesh_path_flush_pending()  argument
1011 	while ((skb = skb_dequeue(&mpath->frame_queue)) != NULL)  in mesh_path_flush_pending()
1012 		mesh_path_discard_frame(mpath->sdata, skb);  in mesh_path_flush_pending()
1023 void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop)  in mesh_path_fix_nexthop()  argument
1025 	spin_lock_bh(&mpath->state_lock);  in mesh_path_fix_nexthop()
1026 	mesh_path_assign_nexthop(mpath, next_hop);  in mesh_path_fix_nexthop()
1027 	mpath->sn = 0xffff;  in mesh_path_fix_nexthop()
1028 	mpath->metric = 0;  in mesh_path_fix_nexthop()
1029 	mpath->hop_count = 0;  in mesh_path_fix_nexthop()
1030 	mpath->exp_time = 0;  in mesh_path_fix_nexthop()
1031 	mpath->flags |= MESH_PATH_FIXED;  in mesh_path_fix_nexthop()
1032 	mesh_path_activate(mpath);  in mesh_path_fix_nexthop()
1033 	spin_unlock_bh(&mpath->state_lock);  in mesh_path_fix_nexthop()
1034 	mesh_path_tx_pending(mpath);  in mesh_path_fix_nexthop()
1039 	struct mesh_path *mpath;  in mesh_path_node_free()  local
1041 	mpath = node->mpath;  in mesh_path_node_free()
1044 		del_timer_sync(&mpath->timer);  in mesh_path_node_free()
1045 		kfree(mpath);  in mesh_path_node_free()
1052 	struct mesh_path *mpath;  in mesh_path_node_copy()  local
1061 	mpath = node->mpath;  in mesh_path_node_copy()
1062 	new_node->mpath = mpath;  in mesh_path_node_copy()
1063 	hash_idx = mesh_table_hash(mpath->dst, mpath->sdata, newtbl);  in mesh_path_node_copy()
1119 	struct mesh_path *mpath;  in mesh_path_expire()  local
1126 		if (node->mpath->sdata != sdata)  in mesh_path_expire()
1128 		mpath = node->mpath;  in mesh_path_expire()
1129 		if ((!(mpath->flags & MESH_PATH_RESOLVING)) &&  in mesh_path_expire()
1130 		    (!(mpath->flags & MESH_PATH_FIXED)) &&  in mesh_path_expire()
1131 		     time_after(jiffies, mpath->exp_time + MESH_PATH_EXPIRE))  in mesh_path_expire()
1132 			mesh_path_del(mpath->sdata, mpath->dst);  in mesh_path_expire()