path: root/net/sched/cls_flower.c

/*
 * net/sched/cls_flower.c		Flower classifier
 *
 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/rhashtable.h>
#include <linux/workqueue.h>

#include <linux/if_ether.h>
#include <linux/in6.h>
#include <linux/ip.h>
#include <linux/mpls.h>

#include <net/sch_generic.h>
#include <net/pkt_cls.h>
#include <net/ip.h>
#include <net/flow_dissector.h>

#include <net/dst.h>
#include <net/dst_metadata.h>

struct fl_flow_key {
	int	indev_ifindex;
	struct flow_dissector_key_control control;
	struct flow_dissector_key_control enc_control;
	struct flow_dissector_key_basic basic;
	struct flow_dissector_key_eth_addrs eth;
	struct flow_dissector_key_vlan vlan;
	union {
		struct flow_dissector_key_ipv4_addrs ipv4;
		struct flow_dissector_key_ipv6_addrs ipv6;
	};
	struct flow_dissector_key_ports tp;
	struct flow_dissector_key_icmp icmp;
	struct flow_dissector_key_arp arp;
	struct flow_dissector_key_keyid enc_key_id;
	union {
		struct flow_dissector_key_ipv4_addrs enc_ipv4;
		struct flow_dissector_key_ipv6_addrs enc_ipv6;
	};
	struct flow_dissector_key_ports enc_tp;
	struct flow_dissector_key_mpls mpls;
	struct flow_dissector_key_tcp tcp;
	struct flow_dissector_key_ip ip;
} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */

struct fl_flow_mask_range {
	unsigned short int start;
	unsigned short int end;
};

struct fl_flow_mask {
	struct fl_flow_key key;
	struct fl_flow_mask_range range;
	struct rcu_head	rcu;
};

struct cls_fl_head {
	struct rhashtable ht;
	struct fl_flow_mask mask;
	struct flow_dissector dissector;
	bool mask_assigned;
	struct list_head filters;
	struct rhashtable_params ht_params;
	union {
		struct work_struct work;
		struct rcu_head	rcu;
	};
	struct idr handle_idr;
};

struct cls_fl_filter {
	struct rhash_h