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/*
* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Nicira, Inc.
* Copyright (c) 2016 Mellanox Technologies, Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef TC_H
#define TC_H 1
#include <sys/types.h>
#include <netinet/in.h> /* Must happen before linux/pkt_cls.h - Glibc #20215 */
#include <linux/pkt_cls.h>
#include <linux/pkt_sched.h>
#include "netlink-socket.h"
#include "odp-netlink.h"
#include "openvswitch/ofpbuf.h"
#include "openvswitch/flow.h"
#include "openvswitch/tun-metadata.h"
/* For backwards compatability with older kernels */
#ifndef TC_H_CLSACT
#define TC_H_CLSACT TC_H_INGRESS
#endif
#ifndef TC_H_MIN_INGRESS
#define TC_H_MIN_INGRESS 0xFFF2U
#endif
#define TC_INGRESS_PARENT TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS)
#define TC_POLICY_DEFAULT "none"
/* Returns tc handle 'major':'minor'. */
static inline unsigned int
tc_make_handle(unsigned int major, unsigned int minor)
{
return TC_H_MAKE(major << 16, minor);
}
/* Returns the major number from 'handle'. */
static inline unsigned int
tc_get_major(unsigned int handle)
{
return TC_H_MAJ(handle) >> 16;
}
/* Returns the minor number from 'handle'. */
static inline unsigned int
tc_get_minor(unsigned int handle)
{
return TC_H_MIN(handle);
}
struct tcmsg *tc_make_request(int ifindex, int type,
unsigned int flags, struct ofpbuf *);
int tc_transact(struct ofpbuf *request, struct ofpbuf **replyp);
int tc_add_del_ingress_qdisc(int ifindex, bool add, uint32_t block_id);
struct tc_cookie {
const void *data;
size_t len;
};
struct tc_flower_key {
ovs_be16 eth_type;
uint8_t ip_proto;
struct eth_addr dst_mac;
struct eth_addr src_mac;
ovs_be32 mpls_lse;
ovs_be16 tcp_src;
ovs_be16 tcp_dst;
ovs_be16 tcp_flags;
ovs_be16 udp_src;
ovs_be16 udp_dst;
ovs_be16 sctp_src;
ovs_be16 sctp_dst;
uint16_t vlan_id[FLOW_MAX_VLAN_HEADERS];
uint8_t vlan_prio[FLOW_MAX_VLAN_HEADERS];
ovs_be16 encap_eth_type[FLOW_MAX_VLAN_HEADERS];
uint8_t flags;
uint8_t ip_ttl;
uint8_t ip_tos;
struct {
ovs_be32 ipv4_src;
ovs_be32 ipv4_dst;
uint8_t rewrite_ttl;
} ipv4;
struct {
struct in6_addr ipv6_src;
struct in6_addr ipv6_dst;
uint8_t rewrite_hlimit;
} ipv6;
struct {
struct {
ovs_be32 ipv4_src;
ovs_be32 ipv4_dst;
} ipv4;
struct {
struct in6_addr ipv6_src;
struct in6_addr ipv6_dst;
} ipv6;
uint8_t tos;
uint8_t ttl;
ovs_be16 tp_src;
ovs_be16 tp_dst;
ovs_be64 id;
struct tun_metadata metadata;
} tunnel;
};
enum tc_action_type {
TC_ACT_OUTPUT,
TC_ACT_ENCAP,
TC_ACT_PEDIT,
TC_ACT_VLAN_POP,
TC_ACT_VLAN_PUSH,
};
struct tc_action {
union {
int ifindex_out;
struct {
ovs_be16 vlan_push_tpid;
uint16_t vlan_push_id;
uint8_t vlan_push_prio;
} vlan;
struct {
ovs_be64 id;
ovs_be16 tp_src;
ovs_be16 tp_dst;
uint8_t tos;
uint8_t ttl;
uint8_t no_csum;
struct {
ovs_be32 ipv4_src;
ovs_be32 ipv4_dst;
} ipv4;
struct {
struct in6_addr ipv6_src;
struct in6_addr ipv6_dst;
} ipv6;
struct tun_metadata data;
} encap;
};
enum tc_action_type type;
};
enum tc_offloaded_state {
TC_OFFLOADED_STATE_UNDEFINED,
TC_OFFLOADED_STATE_IN_HW,
TC_OFFLOADED_STATE_NOT_IN_HW,
};
struct tc_flower {
uint32_t handle;
uint32_t prio;
struct tc_flower_key key;
struct tc_flower_key mask;
int action_count;
struct tc_action actions[TCA_ACT_MAX_PRIO];
struct ovs_flow_stats stats;
uint64_t lastused;
struct {
bool rewrite;
struct tc_flower_key key;
struct tc_flower_key mask;
} rewrite;
uint32_t csum_update_flags;
bool tunnel;
struct tc_cookie act_cookie;
bool needs_full_ip_proto_mask;
enum tc_offloaded_state offloaded_state;
};
/* assert that if we overflow with a masked write of uint32_t to the last byte
* of flower.rewrite we overflow inside struct flower.
* shouldn't happen unless someone moves rewrite to the end of flower */
BUILD_ASSERT_DECL(offsetof(struct tc_flower, rewrite)
+ MEMBER_SIZEOF(struct tc_flower, rewrite)
+ sizeof(uint32_t) - 2 < sizeof(struct tc_flower));
int tc_replace_flower(int ifindex, uint16_t prio, uint32_t handle,
struct tc_flower *flower, uint32_t block_id);
int tc_del_filter(int ifindex, int prio, int handle, uint32_t block_id);
int tc_get_flower(int ifindex, int prio, int handle,
struct tc_flower *flower, uint32_t block_id);
int tc_flush(int ifindex, uint32_t block_id);
int tc_dump_flower_start(int ifindex, struct nl_dump *dump, uint32_t block_id);
int parse_netlink_to_tc_flower(struct ofpbuf *reply,
struct tc_flower *flower);
void tc_set_policy(const char *policy);
#endif /* tc.h */
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